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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 15598. Отображено 100.
16-02-2012 дата публикации

Method for feeding a burden to a blast furnace

Номер: US20120039700A1
Автор: Jean-Paul Simoes, Jeannot Loutsch, Lionel Hausemer
Принадлежит: Paul Wurth SA

The present invention proposes a method for feeding a burden to a blast furnace ( 32 ), wherein the method comprises providing a charging device ( 38 ) having at least one material hopper ( 40 ), the material hopper ( 40 ) comprising a hopper chamber ( 42 ), a material inlet aperture for feeding a burden into the hopper chamber ( 40 ), and a material discharge aperture for feeding a burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ); the material inlet aperture having an associated inlet seal valve 44 ) for opening and closing the material inlet aperture and the material discharge aperture having an associated material discharge valve ( 46 ) for opening and closing the material discharge aperture. The method further comprises opening the material inlet aperture and closing the material discharge aperture; feeding a burden into the hopper chamber ( 40 ) through the material inlet aperture; closing the inlet seal valve ( 44 ); pressurizing the hopper chamber ( 40 ) by feeding pressurizing gas into the hopper chamber ( 40 ); and opening the material discharge valve ( 46 ) and feeding the burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ). According to an important aspect of the invention, the method comprises feeding a predetermined amount of pressurized flushing gas through the hopper chamber ( 42 ) before pressurizing the hopper chamber ( 42 ), wherein the flushing gas comprises at least 75% carbon dioxide.

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Номер записи: 1
16-02-2012 дата публикации

Method and Apparatus for Controlling Acid Gas Emissions from Cement Plants

Номер: US20120039778A1
Автор: James J. Schwab
Принадлежит: Envirocare International Inc

A method and apparatus for controlling emissions of acid forming gases such as sulfur dioxide from cement plants is disclosed. Gaseous effluent from the cement plant pyroprocessing chamber is routed to the plant's raw mill to heat and dry the feed meal used in cement production. When the raw mill is in operation microfine lime particles are sprayed into the raw mill using a nozzle system. The spraying of hydrated lime into the raw mill scrubs acid forming gases in the process gaseous effluent. When the raw mill is not operational, microfine lime is sprayed into a gas conditioning tower that is also used to reduce the temperature of the effluent gases to facilitate efficient collection of dust particles prior to emission of the cleansed effluent flow into the atmosphere.

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Номер записи: 2
23-02-2012 дата публикации

Method for feeding a burden to a blast furnace

Номер: US20120043705A1
Автор: Jean-Paul Simoes, Jeannot Loutsch, Lionel Hausemer
Принадлежит: Paul Wurth SA

The present invention proposes a method for feeding a burden to a blast furnace ( 32 ), wherein the method comprises providing a charging device ( 38 ) having at least one material hopper ( 40 ), the material hopper ( 40 ) comprising a hopper chamber ( 42 ), a material inlet aperture for feeding a burden into the hopper chamber ( 40 ), and a material discharge aperture for feeding a burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ); the material inlet aperture having an associated inlet seal valve 44 ) for opening and closing the material inlet aperture and the material discharge aperture having an associated material discharge valve ( 46 ) for opening and closing the material discharge aperture. The method further comprises opening the material inlet aperture and closing the material discharge aperture; feeding a burden into the hopper chamber ( 40 ) through the material inlet aperture; closing the inlet seal valve ( 44 ); pressurizing the hopper chamber ( 40 ) by feeding pressurizing gas into the hopper chamber ( 40 ); and opening the material discharge valve ( 46 ) and feeding the burden from the hopper chamber ( 40 ) to the blast furnace ( 32 ). According to an important aspect of the invention, the method further comprises subjecting at least a portion of a top gas recovered from the blast furnace ( 32 ) to a recycling process wherein carbon dioxide is removed from the recovered top gas; and feeding at least a portion of the recovered carbon dioxide as pressurizing gas into the hopper chamber ( 40 ) for pressurizing the hopper chamber ( 40 ).

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Номер записи: 3
03-05-2012 дата публикации

Direct spray cooling for limestone preheaters

Номер: US20120107758A1
Автор: Charles R. Euston, II Gene Basara, Ronald K. Riddle
Принадлежит: FLSmidth AS

A preheating apparatus for particulate material using hot kiln gases to preheat the particular material. The apparatus has a means to cool the hot kiln gases prior to the gases being exhausted from the preheating apparatus.

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Номер записи: 4
17-05-2012 дата публикации

Method and system for separating mercury from waste gases of a cement production process

Номер: US20120118151A1
Автор: Detlev Kupper, Dietmar Schulz, Karl Menzel, Ludger Brentrup, Mark Terry, Reinhard Beilmann
Принадлежит: THYSSENKRUPP POLYSIUS AG

In the method according to the invention for separating mercury from waste gases of a cement production process, the mercury is sorbed on a sorbent, the sorbent is subsequently discharged from the process and supplied to a discharge reactor which is operated with a carrier gas. The sorbent is heated there to temperatures of more than 250° C. so that the mercury is discharged from the sorbent and changed into the gas phase, the gas of the discharge reactor that has accumulated mercury subsequently having the dust removed from it in a preliminary dust removal device, and only a part-flow of the gas which has been enriched and had the dust removed from it in this manner being drawn off at high temperatures and cleaned in a subsequent sorption stage, whilst the remaining part-flow is brought to the temperature required for the discharge of the mercury in the discharge reactor in a heat transfer system and is again supplied as a carrier gas to the discharge reactor.

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Номер записи: 5
24-05-2012 дата публикации

Method for heating lightweight metal ingots

Номер: US20120125569A1
Автор: Eduard Morbitzer, Robert Ebner
Принадлежит: EBNER INDUSTRIEOFENBAU GMBH

A method is described for heating lightweight metal ingots ( 1 ), with the lightweight metal ingots ( 1 ) being heated in a furnace ( 2 ) by hot burner exhaust gases. In order to provide advantageous heating conditions it is proposed that the lightweight metal ingots ( 1 ), prior to their heating in the furnace ( 2 ), are preheated via at least one preheating apparatus ( 9 ) which rests in a planar manner thereon and is supplied by a fluid heat carrier which is heated in heat exchange by the hot exhaust gases from the furnace ( 2 ) and is guided in a circuit ( 7 ).

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Номер записи: 6
28-06-2012 дата публикации

Reformer gas-based reducing method with reduced nox emission

Номер: US20120160062A1
Автор: Guenter Peer, Robert Millner
Принадлежит: Siemens VAI Metals Technologies GmbH

In a process and apparatus for the reduction of metal oxides (3) to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of a gas containing carbon dioxide (CO 2 ) and/or steam (H 2 O) with gaseous hydrocarbons, the heat for the endothermal reformation processes which take place during the reformation is provided at least partially by the combustion of a fuel gas.

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Номер записи: 7
09-08-2012 дата публикации

System and method for making metallic iron with reduced co2 emissions

Номер: US20120198966A1
Автор: David J. Englund, Jeremiah Crouch, John Meehan, Logan Wilson, Mark Schlichting, Richard F. Kiesel
Принадлежит: Nu Iron Technology LLC

A method and system for making metallic iron nodules with reduced CO2 emissions is disclosed. The method includes: assembling a linear hearth furnace having entry and exit portions, at least a conversion zone and a fusion zone, and a moving hearth adapted to move reducible iron bearing material through the furnace on contiguous hearth sections; assembling a shrouded return substantially free of air ingress extending adjacent at least the conversion and fusion zones of the furnace through which hearth sections can move from adjacent the exit portion to adjacent the entry portion of the furnace; transferring the hearth sections from the furnace to the shrouded return adjacent the exit portion; reducing reducible material in the linear hearth furnace to metallic iron nodules; and transporting porting gases from at least the fusion zone to the shrouded return to heat the hearth sections while in the shrouded return.

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Номер записи: 8
27-09-2012 дата публикации

Reflow furnace

Номер: US20120240424A1
Автор: Daisuke Kasahara, Hiroshi Taguchi, Koichiro Hosokawa, Takashi Sugihara, Yuta Saito
Принадлежит: Senju Metal Industry Co Ltd

To prevent evaporated flux from being attached to rotation axes of motors which rotate fans positioned in a preheating zone, a main heating zone and a cooling zone and being solidified, the evaporated flux is efficiently and surely collected with the flux liquefying before the flux is solidified and having fluidity. A drain portion 20 constituting a flux collection apparatus 10 A is formed at a side of a motor base 16 opposed to the fan and at a circumferential portion of the rotation axis 14. A surface of the drain portion 20 opposed to the fan is formed as an inclined surface 20 A which is inclined from a level position of the motor base 16 to a discharge port 46 provided at a back side of the motor base 16. The flux collected to a center portion of the motor base 16 by the rotation drive of the fan is flown to the drain portion 20 formed in the center portion of the motor base 16, is flown along the inclined surface 20 A and contained into a collection container 34 from the drain portion 20 through the discharge port 46, a drain pipe and a pipe 48.

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Номер записи: 9
13-12-2012 дата публикации

Method and device for purifying exhaust gases

Номер: US20120315205A1
Автор: Gerhard Philipp, Heimo Thalhammer, Johannes Schedler
Принадлежит: CHEMISCH THERMISCHE PROZESSTECHNIK GMBH

The invention relates to a regenerative thermal postcombustion plant ( 24 ) used for purifying exhaust gas comprising hydrocarbons and nitrogen oxides, particularly for exhaust gas occurring during cement clinker production, by means of which the carbon compound is oxidized and the nitrogen oxides are thermally reduced while feeding in a nitrogen-hydrogen compound at a temperature of greater than 800° C. in the multistage combustion chamber ( 35 ).

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Номер записи: 10
16-05-2013 дата публикации

PROCESS AND PLANT FOR PRODUCING HOT METAL

Номер: US20130118306A1
Автор: Nepper Jean-Paul, Stefan Tobias
Принадлежит: OUTOTEC OYJ

A process for producing hot metal includes partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture. The reduced mixture is cooled to between 600° C. and 800° C. in a heat exchanger apparatus using a preheated process gas as a cooling medium that is preheated to between 300° C. and 500° C. before being introduced into the heat exchanger apparatus. The reduced mixture is then supplied to a smelting reduction unit via a discharge system. 117-. (canceled)18. A process for producing hot metal , comprising:partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture;cooling the reduced mixture to between 600° C. and 800° C. in a heat exchanger apparatus using a preheated process gas as a cooling medium, the process gas being preheated to between 300° C. and 500° C. before being introduced into the heat exchanger apparatus; and thensupplying the reduced mixture to a smelting reduction unit via a discharge system.19. The process according to claim 18 , wherein the preheated process gas is a recirculation gas withdrawn from the fluidized bed reactor.20. The process according to claim 18 , wherein the preheated process gas contains at least one of carbon monoxide (CO) and elementary hydrogen (H).21. The process according to claim 18 , wherein the preheated process gas is heated to between 600° C. and 800° C. by the reduced mixture in the heat exchanger apparatus.22. The process according to claim 18 , further comprising separating the reduced mixture from the preheated process gas subsequent to the preheated process gas being heated in the heat exchanger apparatus and then supplying the preheated process gas that has been heated in the heat exchanger apparatus to the fluidized bed reactor as a fluidizing ...

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Номер записи: 11
06-06-2013 дата публикации

PARTIALLY-REDUCED IRON PRODUCING METHOD AND PARTIALLY-REDUCED IRON PRODUCING APPARATUS

Номер: US20130139647A1
Автор: Kamikawa Susumu, Nakajima Hiroshi, Pham Khanhson, Sato Keiichi
Принадлежит: MITSUBISHI-HITACHI METALS MACHINERY, INC.

A reduction furnace includes a pellet material supplying device forming on a grate an ignition carbon material layer having a predetermined height; an ignition device; and an exhaust gas circulation device supplying an oxygen-containing gas comprising circulated exhaust gas mixed with air, to a packed bed of the pellets heated by a combustion heat of the ignition carbon material layer. A partially-reduced iron is produced by thermally reducing the pellets through a combustion region for the ignition carbon material layer and a heating region, the combustion region formed upstream in a travelling direction of the grate by supplying a gas having a high oxygen concentration, the heating region formed downstream of the combustion region by supplying a gas having a low oxygen concentration. 1. A partially-reduced iron producing method comprising the steps of:laying an ignition carbon material to a predetermined height on an endless grate;igniting the ignition carbon material, and then packing raw-material pellets on the ignited ignition carbon material, the raw-material pellets formed by mixing and pelletizing a reduction carbon material and a raw material containing iron oxides;causing a flammable volatile component to be generated from the reduction carbon material in the raw-material pellets and combust, by use of a combustion heat of the ignited ignition carbon material;causing a temperature of the raw-material pellets to further rise by use of a combustion heat of the flammable volatile component, so that a reduction reaction proceeds and a carbon monoxide gas is generated, while causing the raw-material pellets adjacent thereto to be heated by use of the combustion heat, so that a flammable volatile component is generated from the reduction carbon material in the adjacent portions of the raw-material pellets;increasing a concentration of the carbon monoxide gas near the raw-material pellets having the temperature further raised, to a combustion range of the carbon ...

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Номер записи: 12
20-06-2013 дата публикации

ROTARY HEARTH FURNACE EXHAUST GAS DUCT APPARATUS AND METHOD FOR OPERATING SAME

Номер: US20130154167A1
Автор: Mizutani Noriaki, Tokuda Koji, Tsuge Osamu
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

An exhaust gas duct apparatus for use in a rotary-hearth furnace for heating a starting material including a carbonaceous reducing material and an iron-oxide containing material to produce reduced iron or granular metallic iron. In an exhaust gas duct for use in the rotary-hearth furnace, a cooling part for cooling an exhaust gas discharged from the rotary-hearth furnace to solidify a metal salt in the exhaust gas, a collision part for allowing the exhaust gas just after being cooled to collide therewith to drop down the metal salt solidified, and a direction change duct for guiding the exhaust gas after being collided, in a direction other than a direction of dropping the metal salt, are arranged in this order in two stages. 1. An exhaust gas duct apparatus for use in a rotary-hearth furnace for heating a starting material including a carbonaceous reducing material and an iron-oxide containing material to produce reduced iron or granular metallic iron , wherein ,in an exhaust gas duct for use in the rotary-hearth furnace,a cooling part for cooling an exhaust gas discharged from the rotary-hearth furnace to solidify a metal salt in the exhaust gas,a collision part for allowing the exhaust gas just after being cooled, to collide therewith to drop down the metal salt solidified, anda direction change duct for guiding the exhaust gas after being collided, in a direction other than a direction of dropping the metal salt, are arranged in this order in two stages.2. The exhaust gas duct apparatus for use in a rotary-hearth furnace according to claim 1 ,wherein the cooling part includes a first cooling part for cooling the exhaust gas discharged from the rotary-hearth furnace to a temperature of from 1000 to 1200° C., and a second cooling part for further cooling the exhaust gas after being collided, to a temperature of from 450 to 900° C.3. The exhaust gas duct apparatus for use in a rotary-hearth furnace according to claim 2 ,wherein the collision part includes a first ...

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Номер записи: 13
18-07-2013 дата публикации

PARTIALLY-REDUCED IRON PRODUCING APPARATUS AND PARTIALLY-REDUCED IRON PRODUCING METHOD

Номер: US20130180362A1
Автор: Kamikawa Susumu, Nakajima Hiroshi, Pham Khanhson, Sato Keiichi
Принадлежит: MITSUBISHI-HITACHI METALS MACHINERY, INC.

A partially-reduced iron producing apparatus includes: a supplying device laying ignition raw- material pellets on an endless-grate; a heating furnace heating the ignition raw-material pellets; another supplying device laying the raw material pellets on the ignition raw-material pellets; and an exhaust gas circulation device supplying an oxygen-containing gas to the raw-material pellets. The oxygen containing gas is made by circulating part of an exhaust gas discharged from the raw-material pellets and mixing it with air. A partially-reduced iron is produced by thermally reducing the raw-material pellets in a bed height direction thereof through separate combustion and heating regions. The combustion region formed on an upstream side in a travelling direction of the endless grate by supplying the oxygen-containing gas having a high oxygen concentration. The heating region formed downstream of the combustion region in the travelling direction of 1. A partially-reduced iron producing apparatus comprising:ignition raw-material pellet supply means for laying ignition raw-material pellets to a predetermined height on an endless grate, the ignition raw-material pellets made of a material that is the same as a material of raw-material pellets formed by mixing and pelletizing a reduction carbon material and a raw material containing iron oxides;heating means for heating the ignition raw-material pellets laid on the endless grate to a reduction temperature range;raw-material pellet supply means for laying the raw-material pellets on the ignition raw-material pellets heated by the heating means; andexhaust gas circulation means for supplying an oxygen-containing gas to the raw-material pellets heated by a heat of the ignition raw-material pellets, the oxygen-containing gas made by circulating part of an exhaust gas discharged from the raw-material pellets by use of a heat of the ignition raw-material pellets and mixing it with air, whereina partially-reduced iron is produced ...

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Номер записи: 14
18-07-2013 дата публикации

MELT METALLURGICAL INSTALLATION COMPRISING A CHARGING ELEMENT

Номер: US20130181383A1
Автор: Dorndorf Markus, Huber Hansjörg
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A melt metallurgical installation has a melting furnace for melting scrap metal and a charging region for the melting furnace which is located above the melting furnace. The installation further has a charging element, which has been filled with scrap metal intended for the melting furnace and can be moved in a movement direction into the charging region where it can be emptied and then moved again, in the empty state, against the movement direction out of the charging region. The charging region is enclosed by a hood such that the charging region, including the charging element which has been placed in the charging region, is closed at the top and on the sides. The hood has at least one upper extraction opening through which the waste gases and dust developing in the hood can be extracted out of the hood. 115-. (canceled)16. A melt metallurgical installation , comprising:a melting furnace for melting scrap metal, the melting furnace being charged from a charging region above the melting furnace;a charging element, to move the scrap metal in a movement direction toward the charging region where the scrap metal is emptied into the melting furnace before the charging element is moved in a direction opposite to the movement direction, away from the charging region;a hood at least partially enclosing the charging region, such that when charging element is in the charging region, the hood encloses a top end of the charging element opposite the melting furnace and encloses sides of the charging element, the hood having at least one extraction opening through which waste gases and dust are extracted out of the hood; anda chute located between the melting furnace and the charging region to receive and preheat the scrap metal, the melting furnace being charged from the charging region via the chute, whereinthe scrap metal is conveyed to the chute when the charging element is emptied, the chute has an upper closure element at an upper end, away from the melting furnace, the ...

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Номер записи: 15
01-08-2013 дата публикации

TREATMENT DEVICE AND TREATMENT METHOD FOR CHLORINE BYPASS DUST

Номер: US20130192497A1
Автор: Kondou Kenzaburou, Terasaki Junichi
Принадлежит: TAIHEIYO CEMENT CORPORATION

In accordance with the present invention, there is provided a treat chlorine bypass dust while preventing increases in chemical cost and concentrations of heavy metals in clinker, and ensuring stability in quality of cement. In a chlorine bypass facility extracting a part G of combustion gas, while cooling it, from a kiln exhaust gas passage, which runs from an inlet end of a cement kiln to a bottom cyclone, and recovering a high chlorine concentration chlorine bypass dust D from the extracted gas G, a slurry S containing chlorine bypass dust and SO2 gas or/and CO2 gas are contacted with each other to obtain solid content. The slurry containing chlorine bypass dust and an exhaust gas from the chlorine bypass facility or/and the exhaust gas from the cement kiln can be contacted with each other, and the solid content can be fed to a cement finishing process, which allows cement with low CaO and Ca(OH)2 contents and with stable property such as setting time to be produced. 1. A method of treating chlorine bypass dust characterized by , in a chlorine bypass facility extracting a part of combustion gas , while cooling it , from a kiln exhaust gas passage , which runs from an inlet end of a cement kite to a bottom cyclone , and recovering a high chlorine concentration chlorine bypass dust from the extracted gas , obtaining solid content by contacting a slurry containing the chlorine bypass dust and SOgas or/and COgas with each other , and determining time for reacting the slurry containing the chlorine bypass dust to the SOgas or/and the COgas by at least one selected from the group consisting of: rate of decrease in the SOgas or/and the COgas when obtaining the solid content; pH of the slurry after being reacted with the SOgas or/and the COgas , and chemical analysis value of the chlorine bypass dust.2. The method of treating chlorine bypass dust as claimed in claim 1 , wherein said slurry containing chlorine bypass dust and an exhaust gas irons the chlorine bypass ...

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Номер записи: 16
01-08-2013 дата публикации

Regenerative Air Heater And Method of Operation

Номер: US20130196277A1
Автор: Cain Bruce E., Miller Todd A., Newby John N., Robertson Thomas F.
Принадлежит:

A flow of air is provided from a hot air main into a combustion chamber at a time when a burner is firing into the combustion chamber to heat a bed of regenerative media. The flow of air into the combustion chamber helps to keep products of combustion from flowing into the hot air main. In preferred embodiments, sensors sense pressure in the combustion chamber and the hot air main. A controller shifts a valve back and forth within a range of open conditions to regulate the flow of air in response to the sensed pressures. 1. An apparatus for use with a combustion chamber having an outlet to a hot air main , and a burner configured to fire into the combustion chamber to heat a bed of regenerative media , the apparatus comprising:means for providing a flow of air from the hot air main into the combustion chamber through the outlet at a time when the burner is firing into the combustion chamber to heat the bed of regenerative media.2. An apparatus as defined in further comprising means for monitoring the flow of air claim 1 , and means for responding to a decrease in the flow of air by increasing a flow of exhaust gas from the combustion chamber outward through the bed of regenerative media.3. An apparatus for use with a combustion chamber having an outlet to a hot air main claim 1 , and an exhaust valve that controls a flow of gas from the combustion chamber outward through a bed of regenerative media claim 1 , the apparatus comprising:a sensor that senses pressure in the combustion chamber;a sensor that senses pressure in the hot air main; anda controller configured to shift the exhaust valve back and forth within a range of open conditions in response to the sensed pressures.4. An apparatus as defined in wherein the controller is configured to monitor an amount by which the sensed pressure in the hot air main exceeds the sensed pressure in the combustion chamber claim 3 , and to shift the exhaust valve from an open condition toward a more fully open condition in ...

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Номер записи: 17
08-08-2013 дата публикации

METAL RECOVERY FROM CONTAMINATED METAL SCRAP

Номер: US20130199338A1
Автор: Chalabi Rifat Al, Perry Ophneil Henry
Принадлежит: Chinook Sciences, Limited

A metal reclaiming system and method for reclaiming metal from scrap material is provided. The system has a furnace () and a controller () for controlling operation of the system. The controller () operates the metal reclaiming system in a first operating mode in which the furnace () is operated at a first temperature in the range of 350° C. to 550° C. to incinerate pollutants and drive off volatile organic compounds (VOCs) from the scrap material without melting the metal. The controller () is operates the metal reclaiming system in a subsequent operating mode in which the furnace () is operated at a further, higher temperature to melt metal in the said scrap for reclaiming. 1. A metal reclaiming system for reclaiming metal from scrap material and the like , the system comprising:{'b': '12', 'a furnace ();'}{'b': '106', 'and a controller () for controlling operation of the system;'}wherein the controller is configured to operate the metal reclaiming system in:a first operating mode in which the furnace is operated at a first temperature in the range of 350° C. to 550° C. to incinerate pollutants and drive off volatile organic compounds (VOCs) from the scrap material without melting the metal;and a subsequent operating mode in which the furnace is operated at a further, higher temperature to melt metal in the said scrap for reclaiming.210612. A metal reclaiming system as claimed in wherein said controller () is configured to operate the metal reclaiming system in an intermediate (second) mode for removing particulate material from said furnace ().310612. A metal reclaiming system as claimed in or wherein said controller () is configured to operate the metal reclaiming system in a further (fourth) mode to thermally condition metal remaining in the furnace ().4281232. A metal reclaiming system as claimed in any preceding claim further comprising a thermal oxidiser () coupled to said furnace () to process raw VOC's and a return path () from said thermal oxidiser to ...

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Номер записи: 18
08-08-2013 дата публикации

CLINKER KILN WITH SLIDER FOR TERTIARY AIR DUCT

Номер: US20130203005A1
Автор: von Wedel Karl
Принадлежит: IKN GMBH

A slider unit for a tertiary air duct between a clinker cooler and a calciner of a clinker kiln line. The slider unit has at least one shutoff device, which is insertable into a tertiary air duct to seal it without further reducing the cross section of the tertiary air duct, and provides reliable sealing of the tertiary air duct and control of the tertiary air flow, if the slider unit has at least one control device which is insertable into a section of the tertiary air duct to reduce its cross section. 1. A slider unit for a tertiary air duct having a cross section between a clinker cooler and a calciner or a clinker kiln line , the slider unit havingat least one shutoff device configured to be insertable into the tertiary air duct to shut said tertiary air duct off such that a cross section of the tertiary air duct is not further reduced, andat least one control device configured to be insertable into said tertiary air duct to reduce the cross section of the tertiary air duct.2. The slider unit of claim 1 , whereinthe shutoff device has a side facing the clinker cooler and wherein the at least one control device is arranged on said side facing the clinker cooler.3. The slider unit of claim 2 , whereinthe at least one control device is supported by the shutoff device on a side facing the calciner.4. The slider unit of claim 1 , whereinthe at least one shutoff device has at least two shutoff segments, the at least two shutoff segments being guided in parallel to each other.5. The slider unit of claim 4 , whereinat least a first of the at least two shutoff segments is movable in a guide of at least another of the at least two shutoff segments.6. The slider unit of claim 4 , whereinat least one of the at least two shutoff segments has at least one catch element for at least one other of the at least two shutoff segments of the shutoff device.7. The slider unit of claim 1 , whereinthe control device has at least one carrier with heat resistant cladding.8. The slider ...

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Номер записи: 19
05-09-2013 дата публикации

Thermal efficiency improvement method for heating furnace and thermal efficiency improvement device for heating furnace

Номер: US20130228105A1
Автор: Narihito Nakagawa, Takemi Yamamura, Terumi Hisayuki, Yoshikazu Matsumura
Принадлежит: UBE Industries Ltd

A thermal efficiency improvement device 10 for a heating furnace is installed in an exhaust port 12 of the heating furnace to reduce effluent heat from the exhaust port 12 to the outside. The device 10 disposed along a flow of exhaust gas passing inside the exhaust port 12 includes at least one heat-resistant fabric members 15, 16 heated by exhaust gas and supporting members 13, 14, 17, 18, 19 fixing the fabric members 15, 16 to the exhaust port 12 , and puts radiant heat from the heated fabric members 15, 16 back into the heating furnace to reduce effluent heat to the outside. By installing the device in an exhaust port of an existing or newly-built heating furnace, radiant heat from the fabric members heated by exhaust gas is put back into the heating furnace, and effluent heat from the exhaust port is reduced.

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Номер записи: 20
05-09-2013 дата публикации

SYSTEM FOR SUBSTANCE SEPARATION AND ENERGY RECOVERY BY THERMAL TREATMENT

Номер: US20130230815A1
Автор: Ger Jia-Shyan
Принадлежит: TAIWAN CLEAN ENERGY TECHNOLOGY CO., LTD.

A system for substance separation and energy recovery by thermal treatment is disclosed. The system includes a thermal treatment reactor, a circulation piping, a heat exchanger, a discharge pipeline, a latent heat recovering device, a gasifier, and a combustion furnace. The substance is fed into the thermal treatment reactor for heating the treated substance so as to produces a gaseous substance by evaporation or pyrolysis. The treated substance is separated into the gaseous substance circulating between the heat exchanger and the thermal treatment reactor and a residual substance being fed into the thermal treatment reactor. The increased gaseous substance, during the circulation process, is fed into a latent heat recovery device, wherein the gaseous substance exchanges heat with a cold fluid and condenses to release latent heat, forming a liquid condensed substance and a non-condensed substance. 1. A system for substance separation and energy recovery by thermal treatment , comprising:a thermal treatment reactor for receiving a substance and conducting thermal treatment of the substance;a circulation piping;a heat exchanger, wherein the thermally treated substance produces a gaseous substance being transmitted to the heat exchanger through the circulation piping for the gaseous substance to undergo heat exchange with a high-temperature heat source to increase the temperature, the gaseous substance is then fed into the thermal treatment reactor after the temperature is increased, and then is circulated between the heat exchanger and the thermal treatment reactor through the circulation piping, and the thermally treated substance further forms a residual substance;a discharge piping disposed with a vacuum pump and/or a throttle valve at one end thereon;a latent heat recovering device, wherein the gaseous substance produced by the thermally treated substance is transmitted to the latent heat recovering device through the discharge piping, and the latent heat ...

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Номер записи: 21
17-10-2013 дата публикации

Process for operating a blast furnace installation with top gas recycling

Номер: US20130270752A1
Автор: Michel Devaux, Philippe Blostein, Richard Dubettier-Grenier
Принадлежит: Individual

Blast furnace installation having top gas recycling and process for operating same, in which the oxygen concentration of the oxidizing gas injected into the blast furnace is regulated as a function of the flow rate of the recycled top gas

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Номер записи: 22
14-11-2013 дата публикации

INTEGRATED GAS COOLING SYSTEM FOR ELECTRIC ARC FURNACE

Номер: US20130300038A1
Автор: Antonini Roberto, Ose Sivert
Принадлежит: ALSTOM Technology Ltd

A flue gas cooler for cooling raw, hot flue gas from an electric arc furnace of an iron and steel production plant is provided. Each flue gas cooler has a gas inlet chamber a gas outlet chamber and a matrix of gas cooling tubes extending between and into the inlet chamber and the outlet chamber. Each gas cooling tube has a bell-shaped inlet end comprising an aerodynamically curved gas-accelerating profile effective to facilitate streamlined flow of flue gas into the gas cooling tube. The flue gas cooler makes it possible to receive flue gas directly from an electric arc furnace without getting clogged by dust and sublimates present in the flue gas. 1. A gas cooler for cooling flue gas from an electric arc furnace used in a steel production plant , comprising:a gas inlet chamber fluidly connected to an electric arc furnace;a gas outlet chamber; anda plurality of gas cooling tubes, each gas cooling tube having an inlet end in the inlet chamber and an outlet end in the outlet chamber, and each gas cooling tube having a bell-shaped inlet end comprising an aerodynamically curved gas-accelerating profile effective to facilitate streamlined flow of flue gas into the gas cooling tube.2. A gas cooler according to claim 1 , wherein the gas cooling tube inlets accelerate the flue gas to a flow velocity in the range of 20 to 30 m/s.3. A gas cooler according to claim 1 , wherein the inlet and outlet ends of the gas cooling tubes project into the inlet and outlet plenum chambers claim 1 , respectively.4. A gas cooler according to claim 1 , wherein the gas cooling tubes form a matrix of mutually parallel tubes evenly spaced apart in the inlet and outlet plenum chambers.5. A gas cooler according to claim 1 , further comprising a coolant enclosure around the gas cooling tubes claim 1 , the enclosure having coolant entry and exit means.6. A gas cooler according to claim 5 , wherein the coolant enclosure forms part of an external shell of the gas cooler.7. A gas cooler according to ...

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Номер записи: 23
12-12-2013 дата публикации

APPARATUS FOR PRE-HEATING A METAL CHARGE FOR A MELTING PLANT AND CONNECTED METHOD

Номер: US20130328251A1
Автор: Narholz Thomas, Villemin Bernard
Принадлежит: DANIELI & C. OFFICINE MECCANICHE SPA

Apparatus for pre-heating and conveying a metal charge to a container of a melting plant, comprising at least a conveyor channel along which said metal charge is able to advance so as to be delivered to the container, and in which above said conveyor channel at least a hood is disposed which defines a tunnel inside which at least part of the fumes exiting from said container are able to advance. At least a zone of the hood comprises an expansion chamber located above at least a portion of said metal charge, and able to expand and keep said fumes inside it for a minimum desired time of at least 1.5 seconds before they go into contact with the metal charge. 117.-. (canceled)18. Apparatus for pre-heating and conveying a metal charge to a melting furnace of a melting plant , comprising:a container capable of advancing a metal charge,a conveyor channel having lateral walls and a bottom wall that define a substantially U-shaped cross section and in fluid communication with said container,a hood at least partially disposed above said conveyor channel and having a tunnel wherein at least part of the fumes exiting from the metal charge in said container advance into said hood,an expansion chamber within said hood and at least partially located above said container;a connection pipe disposed between said container and said expansion chamber;at least one suction pipe disposed within said lateral walls of said conveyor channel; anda longitudinal portion of said conveyor channel having at least one fume discharge apertures disposed within said lateral walls and in fluid communication with one said at least one suction pipe.19. The apparatus as in wherein the internal volume of said expansion chamber is a function of the quantity of fumes generated in said container claim 18 , wherein the fumes remain inside said expansion chamber for at least a contact time of about 1.5 seconds.20. The apparatus of wherein said contact time is between about 1.5 seconds and about 6 seconds.21. ...

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Номер записи: 24
19-12-2013 дата публикации

Vertical/Horizontal Convertible Suspending Reduction Furnace

Номер: US20130334743A1
Автор: Li Hengjie
Принадлежит: ZHI LI DEVELOPMENT LIMITED

A vertical/horizontal convertible suspending reduction furnace, comprises: a metal furnace body () of the reduction furnace, a reduction tank (), a burner () and a suspension device. The metal furnace body () of the reduction furnace, which is connected with a sealing head () at one end, and connected with a fixed flange () of the reduction tank at the other end, is distributed with reduction tanks () inside uniformly. Burners () are provided symmetrically at the circumference of the metal furnace body (), and a universal hoisting ring () is provided at its central point or off-central point. A steel rope (), both ends of which are obliquely pulled on the suspension device, is hanged on the universal hoisting ring (). Close to the sealing head (), a turnover hoisting ring () is provided at the metal furnace body () of the reduction furnace, and is connected with an electric hoister () through a turnover steel rope (). By pulling and releasing the turnover steel rope (), the metal furnace body () of the reduction furnace overturns around the universal hoisting ring () of the furnace body. The metal furnace body () of the reduction furnace, the electric hoister (), a walking mechanism () and feeding mechanism () are suspended on a portal frame (). 1. A suspension-type automatic blanking vertical/horizontal convertible heat-storage energy-saving reduction furnace , wherein the reduction furnace also comprises a metal furnace body of the reduction furnace , a reduction tank , a heat-storage type burner and a suspension device , whereinthe metal furnace body of the reduction furnace, which is connected with a sealing head at one end, and connected with a fixed flange of the reduction tank at the other end, is distributed with reduction tanks inside uniformly; a supporting flange of the reduction tank is also provided in the mental furnace body of the reduction furnace at one side of the sealing head; a fixed hole installed with the reduction tank is uniformly distributed ...

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Номер записи: 25
19-12-2013 дата публикации

CARBON BAKING HEAT RECOVERY RING FURNACE

Номер: US20130337391A1
Автор: Haines Tom, Hilock Steve, McGee Mike, Meyer Kenneth
Принадлежит:

Contemplated devices and methods reduce heat loss and energy demand of a carbon baking ring furnace by employing a preferably internal bypass conduit that feeds a portion of a heated cooling air stream from the cooling zone directly to the flue ducts of the firing and/or pre-heat zones. 1. A carbon baking heat recovery ring furnace , comprising:a plurality of wall elements, each having an internal flue channel, wherein the plurality of wall elements are fluidly coupled to each other such that the internal flue channels form a continuous flow path having, in sequence, a pre-heat zone, a firing zone, and a cooling zone;a bypass conduit fluidly coupled to the flue channel of the coating zone and the flue channel of at least one of the firing zone and the pre-heat zone such that a portion of a heated cooling air stream in the flue channel of the cooling zone is directly delivered to the at least one of the firing zone and the pre-heat zone; anda plurality of gates coupled to the bypass conduit, wherein the plurality of gates and the bypass conduit are configured to allow flow of the portion of the heated cooling air stream without substantially moving a zero point in the ring furnace.2. The carbon baking heat recovery ring furnace of wherein the bypass conduit is formed within a wall section of the plurality of wall elements.3. The carbon baking heat recovery ring furnace of wherein a portion of the bypass conduit is external to the plurality of wall elements.4. The carbon baking heat recovery ring furnace of wherein the plurality of gates are configured to allow delivery of the heated cooling air stream into multiple and distinct wall elements of the at least one of the firing zone and the pre-heat zone.5. The carbon baking heat recovery ring furnace of further comprising a control system that is configured to automatically operate the plurality of gates such that a position of the bypass conduit changes as a firing frame is moved in firing direction.6. The carbon ...

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Номер записи: 26
19-12-2013 дата публикации

CARBON BAKING OXYGEN PREHEAT AND HEAT RECOVERY FIRING SYSTEM

Номер: US20130337392A1
Автор: Haines Tom, Hilock Steve, McGee Mike, Meyer Kenneth
Принадлежит:

Contemplated devices and methods reduce heat loss and energy demand in a ring furnace by heating an additional oxygen containing stream in a supplemental oxygen conduit that is thermally coupled to a flue duct of a cooling zone. The so heated additional oxygen containing stream is then fed to the firing and/or pre-heat zones to increases combustion of volatiles and to reduce fuel demand by recycling waste heat to the firing and/or pre-heat zones. 1. An oxygen preheat and heat recovery system for use in a carbon baking furnace , comprising:a plurality of wall elements, each having an internal flue channel, wherein the plurality of wall elements are fluidly coupled to each other such that the internal flue channels form a continuous flow path having, in sequence, a pre-heat zone, a firing zone, and a cooling, zone;a supplemental oxygen conduit thermally coupled to at least a portion of the flue channel of the cooling zone such that a supplemental oxygen stream flowing in the supplemental oxygen conduit is isolated from and heated by a cooling air stream flowing through the cooling zone; andwherein the supplemental oxygen conduit further comprises a delivery opening that is configured to deliver the supplemental oxygen stream directly to the internal flue channel of at least one of the firing zone and the pre-heat zone.2. The oxygen preheat and heat recovery system of wherein the supplemental oxygen conduit is formed within a wall section of the plurality of wall elements.3. The oxygen preheat and heat recovery system of wherein the supplemental oxygen conduit is at least partially disposed within the flue channels of the cooling zone.4. The oxygen preheat and heat recovery system of further comprising a plurality of gates coupled to the supplemental oxygen conduit and configured to direct flow of the supplemental oxygen stream into a desired wall element of the at least one of the firing zone and the pre-heat zone.5. The oxygen preheat and heat recovery system of ...

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Номер записи: 27
16-01-2014 дата публикации

FURNACE DAMPER CONTROL SYSTEM

Номер: US20140016663A1
Автор: Carlson Christopher, Cole David, Drew Kegan, Manning Christopher
Принадлежит: NUCOR CORPORATION

A furnace damper control system including a furnace having at least one opening through which electromagnetic radiation from within the furnace may be sensed, an exhaust duct capable of receiving an exhaust gas stream emerging from the furnace, and a controllable damper capable of adjusting the pressure in the exhaust duct. A sensor is capable of sensing electromagnetic radiation through one or more of the openings of the furnace and generating a sensor signal corresponding to the electromagnetic radiation, and a processor is capable of processing the sensor signal and generating a monitoring signal responsive to a parameter of the electromagnetic radiation indicative of furnace emissions. A controller is capable of controlling the damper responsive to the monitoring signal indicative of the furnace emissions. 1. A furnace damper control system comprising:a furnace having at least one opening through which electromagnetic radiation from within the furnace may be sensed, an exhaust duct adapted to receive an exhaust gas stream emerging from the furnace, and a controllable damper adapted to adjust the pressure in the exhaust duct;a sensor adapted to sense electromagnetic radiation emitted through one or more of the openings of the furnace and generate a sensor signal corresponding to the emitted electromagnetic radiation indicative of furnace emissions; anda controller adapted to control the damper responsive to the sensor signal indicative of the furnace emissions.2. The furnace damper control system of claim 1 , where the sensor signal corresponds to a parameter of the electromagnetic radiation selected from the group consisting of intensity claim 1 , wavelength claim 1 , amplitude claim 1 , frequency claim 1 , and combinations thereof.3. The furnace damper control system of claim 1 , where the electromagnetic radiation is at least a part of the visible spectrum.4. The furnace damper control system of claim 1 , the controller comprising one selected from a group ...

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Номер записи: 28
30-01-2014 дата публикации

ROOF FOR LADLE FURNACE

Номер: US20140029642A1
Автор: LEE Sang-hoon
Принадлежит: HYUNDAI STEEL COMPANY

The present invention relates to a roof for a ladle furnace which can be compatible with a dust collection elbow or with a dust collection hood. The roof according to the present invention includes a side part () which has a vertical cylindrical shape, and a cover part () which covers an upper end of the side part. A first seating hole () is formed in a central portion of the cover part, and a second seating hole () is formed in the cover part at a position adjacent to the first seating hole. A small ceiling () or a dust collection hood () is selectively seated into the first seating hole. A dust collection elbow () or a water cooling panel () is selectively seated into the second seating hole. 1. A roof for a ladle furnace , comprising:a side part having a vertical cylindrical shape; anda cover part that covers an upper end of the side part,wherein a first seating aperture is formed in a central portion of the cover part and a second seating aperture is formed in the cover part at a position adjacent to the first seating aperture,wherein a ceiling or a dust collection hood is selectively seated into the first seating aperture, anda dust collection elbow or a water cooling panel is selectively seated into the second seating aperture.2. The roof for a ladle furnace of claim 1 , further comprising:a plurality of first cotter bodies that vertically protrude from the cover part at positions adjacent to the first seating aperture to selectively fasten the ceiling or the dust collection hood to the first cotter bodies; anda plurality of second cotter bodies that vertically protrude from the cover part at positions adjacent to the second seating aperture to selectively fasten the dust collection elbow or the water cooling panel to the second cotter bodies.3. The roof for a ladle furnace of claim 1 , wherein the dust collection hood includes:a third seating aperture formed in an upper portion of the dust collection hood to seat the ceiling into the third seating aperture; ...

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Номер записи: 29
20-03-2014 дата публикации

HEAT EXCHANGERS IN SAPPHIRE PROCESSING

Номер: US20140080081A1
Автор: Memering Dale N., Prest Christopher D.
Принадлежит: Apple Inc.

Systems and methods are presented for efficient heating during production of corundum. One embodiment takes the form of a system for processing corundum including a first furnace and a second furnace. The first and second furnaces are sequentially arranged and heat from the first furnace is subsequently used to heat the second furnace. 1. A system for processing corundum comprising:a first furnace; anda second furnace wherein the first and second furnaces are sequentially arranged and heat from the first furnace is subsequently used to heat the second furnace.2. The system of further comprising at least one chiller claim 1 , wherein energy extracted from the chiller is used in at least one of the first or second furnaces.3. The system of further comprising at least one heat exchanger for transfer of energy between at least two of the first furnace claim 1 , the second furnace and the chiller.4. The system of claim 1 , further comprising a heat battery claim 1 , wherein heat from the first furnace is routed to the heat battery; andheat from the heat battery is routed to the second furnace.5. The system of claim 1 , further comprising a heat battery claim 1 , wherein heat from the second furnace is routed to the heat battery; andheat from the heat battery is routed to the first furnace.6. The system of claim 1 , wherein heat from at least one of the first and second furnaces is provided to a heat exchanger to heat water or air for heating and ventilation systems.7. The system of claim 1 , wherein heat from the first furnace is provided directly to the second furnace.8. The system of claim 1 , wherein heat from the second furnace is provided directly to the first furnace.9. The system of claim 1 , further comprising a central heater configured to provide heat to at least one of the first furnace or second furnace to supplement the heat provided by the first and second furnace.10. A method of operating multiple furnaces in sapphire processing claim 1 , the method ...

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Номер записи: 30
27-03-2014 дата публикации

PARTIALLY-REDUCED IRON PRODUCING APPARATUS

Номер: US20140084524A1
Автор: ITO Hideki, Kamikawa Susumu, MIZUKI Hideaki, Pham Khanhson, Sato Keiichi
Принадлежит: MITSUBISHI HITACHI METALS MACHINERY, INC.

A partially-reduced iron producing apparatus includes: an exhaust gas circulating device supplying an oxygen-containing gas to raw-material pellets to be heated by ignition of raw-material pellets, the oxygen-containing gas made by circulating part of an exhaust gas by use of the heat of the ignition raw-material pellets and mixing the discharged exhaust gas with air; and a liquid-tar separating device which is provided in the exhaust gas circulating device. A partially-reduced iron is produced by heating and reducing the whole of the raw-material pellets in a bed height direction thereof through a combustion region for the raw-material pellets and a heating region for the raw-material pellets, the combustion region formed on an upstream side of an endless grate by supplying the gas having a high oxygen concentration; and the heating region formed downstream of the combustion region of the endless grate by supplying the gas having a low oxygen concentration. 1. A partially-reduced iron producing apparatus comprising:ignition raw-material pellet supplying means for laying ignition raw-material pellets to a predetermined height on an endless grate, the ignition raw-material pellets made of the same material as that of raw-material pellets formed by mixing and pelletizing a reduction carbon material and a raw material containing iron oxide;heating means for heating the ignition raw-material pellets laid on the endless grate to a reduction temperature range;raw-material pellet supplying means for laying the raw-material pellets on the ignition raw-material pellets heated by the heating means;exhaust gas circulating means for supplying an oxygen-containing gas Lo the raw-material pellets to be heated by a heat of the ignition raw-material pellets, the oxygen-containing gas made by circulating part of an exhaust gas discharged from the raw-material pellets by use of the heat of the ignition raw-material pellets and mixing the discharged exhaust gas with air; andliquid-tar ...

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Номер записи: 31
27-03-2014 дата публикации

Method and System for Heat Recovery from Products of Combustion and Charge Heating Installation Including the Same

Номер: US20140087322A1
Автор: Joumani Youssef, Kang Taekyu, McAndrew James J.F., TSIAVA Remi Pierre
Принадлежит:

A plurality of independently flow rate-controlled flows of oxidant may be preheated at a heat exchanger (or both oxidant and fuel at separate heat exchangers) by heat exchange with a hot shell-side (heat transfer) fluid. The separate flows of hot oxidant are directed to associated separate burners where they combust with flows of fuel to produce hot combustion gases. The hot combustion gases are used to preheat the hot shell-side fluid at a recuperator or regenerator. 1. A system for recovering heat from a furnace , comprising:a source of oxidant having an oxygen concentration greater than that of air;a recuperator or regenerator, said recuperator or regenerator adapted and configured to exchange heat between a flow of cool shell-side fluid and a flow of hot combustion gases from a furnace to produce a flow of hot shell-side fluid; a shell,', 'a hot shell-side fluid inlet and a cool shell-side fluid outlet formed in the shell thereof,', 'first and second oxidant inlets receiving first and second main flows of the oxidant, respectively,', 'first and second sets of one or more oxidant tubes each, the first and second sets receiving the first and second main flows of oxidant, respectively, from the first and second oxidant inlets, each of the oxidant tubes extending through an interior of the shell, and', 'first and second oxidant outlets receiving the first and second main flows of oxidant, respectively, from the first and second sets of oxidant tubes, respectively, the first shell and tube heat exchanger being adapted and configured to transfer heat from the flow of hot shell-side fluid to the main flows of oxidant flowing through the oxidant tubes;, 'a first shell and tube heat exchanger comprisinga first cool oxidant feed conduit fluidly communicating between the source of oxidant and the first oxidant inlet;a second cool oxidant feed conduit fluidly communicating between the source of oxidant and the second oxidant inlet;first and second oxidant flow control ...

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Номер записи: 32
05-01-2017 дата публикации

COAL SLURRY PREHEATER AND COAL GASIFICATION SYSTEM AND METHOD USING THE SAME

Номер: US20170002280A1
Автор: Bi Xijing, Lv Jing, Xue Junli, Yu Liang
Принадлежит:

This invention involves with a gasification system, which includes a gasifier, which gasifier comprises a gasification chamber for producing syngas from coal slurry and a quench chamber for cooling the syngas from the gasification chamber. The mentioned gasification system also comprises preheater located in the quench chamber for utilizing heat in the quench chamber to preheat the coal slurry before the coal slurry enters the gasification chamber. Wherein, the preheater comprises a pipe device defining a passage for the coal slurry to pass through, the passage in communication with the gasification chamber and upstream of the gasification chamber in a flow direction of the coal slurry. This invention also involves with a preheater used in the mentioned gasification system and the gasification method of the mentioned gasification device. 1. A gasification system , comprising:A gasifier comprising a gasification chamber for producing syngas from coal slurry and a quench chamber for cooling the syngas from the gasification chamber; andA preheater located in the quench chamber for utilizing heat in the quench chamber to preheat the coal slurry before the coal slurry enters the gasification chamber,Wherein the preheater comprises a pipe device defining a passage for the coal slurry to pass through, the passage in communication with the gasification chamber and upstream of the gasification chamber in a flow direction of the coal slurry.2. The gasification system according to claim 1 , further comprising a downcomer pipe for passing the syngas from the gasification chamber into the quench chamber claim 1 , and wherein the pipe device is disposed between an outer face of the downcomer pipe and an inner face of the quench chamber.3. The gasification system according to claim 2 , wherein the pipe device comprises a pipe substantially wound as a cylinder claim 2 , the cylinder having an outer diameter smaller than an inner diameter of the quench chamber and an inner diameter ...

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Номер записи: 33
05-01-2017 дата публикации

Pure oxygen direct combustion system using liquid metal

Номер: US20170003022A1
Автор: Ji Hong Moon, Uen Do Lee, Won Yang
Принадлежит: Korea Institute of Industrial Technology KITECH

A pure oxygen direct combustion system using a liquid metal according to the present invention comprises: a reactor for receiving a liquid metal; a heat exchanger, connected to the bottom of the reactor, for exchanging heat for the liquid metal; a circulation pump, connected to the heat exchanger, for circulating the incoming liquid metal; a nozzle, connected to the circulation pump and disposed on the reactor; a reduction unit, connected to the circulation pump, for performing a reduction for the oxidized liquid metal; and a separation unit, connected to the reactor and the reduction unit, wherein the particles of the liquid metal injected from the nozzle are subjected to sensible heat from the gas generated from the reactor, heat-exchanged by the heat exchanger and regenerated by the reduction unit, and then supplied back to the reactor.

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Номер записи: 34
03-01-2019 дата публикации

FURNACE WITH INTEGRATED HEAT RECOVERY UTILIZING RADIATIVE RECUPERATOR FOR PREHEATING COMBUSTION REACTANTS USING HEAT FROM FLUE GAS

Номер: US20190003706A1
Автор: ADELMAN Ryan, CHEVREL Henri, Kang Taekyu, Ma Jiefu, McAndrew James J.F., Tsiava Remi
Принадлежит:

A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m·K), preferably greater than 3 W/(m·K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall. 1. A furnace utilizing recuperative heat exchange for preheating a combustion reactant with waste heat energy from flue gas , comprising:a combustion chamber including a combustion space enclosed by a furnace wall in which a fuel and an oxidant are combusted to heat solid and/or molten glass or glass-making materials or solid and/or molten metal and thereby producing flue gas;one or more burners mounted in the furnace wall adapted and configured to inject preheated fuel and/or preheated oxidant into the combustion chamber interior for combustion therein;a duct extending along an axis and having a first end receiving at least a portion of the flue gas produced in the combustion chamber and a second opposed end discharging the received flue gas;one or more insulating walls extending parallel to the duct axis and adjacently to an outer surface of the duct, the insulating wall being comprised of an insulating material, an non-reactive gas space being defined between an outer surface of the duct and an inner surface of the insulating wall; andone or more metallic pipes extending through the non-reactive gas space, the pipes receiving the combustion oxidant or the combustion fuel and discharging the combustion oxidant or the combustion fuel after being preheated, wherein one or more portions of the duct is comprised of a material having a thermal conductivity of greater than 1 W/(m·K).2. The furnace of claim 1 , wherein the non-reactive gas space freely communicates with ambient air ...

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Номер записи: 35
03-01-2019 дата публикации

MULTI-STAGE CEMENT CALCINING PLANT SUSPENSION PREHEATER

Номер: US20190003770A1
Автор: Petersen Per Ingemann, Pommer Gilla, Tokman Alexander Flavio
Принадлежит:

The invention relates to multi-stage cement calcining plant suspension preheater of the kind mentioned in the introduction, wherein the preheater comprises a top separator comprising a central tube entering the top separator in a lowermost part of the separator housing whereas the central tubes of the bottom separators enters the separator housing in an upper part of the separator housing. 1. A multi-stage cement calcining plant suspension preheater comprising:a plurality of stages each of which has a separator for separating raw cement meal from a gas in which the meal is suspended and wherein the separators of the plurality of stages are serially connected and in series with a calcining combustor,the plurality of stages comprising a top separator arranged at the uppermost stage of the preheater and a plurality of bottom separators arranged at the lowermost stages of the preheater, a top separator housing comprising a substantially cylindrical top separator upper part and a substantially conical top separator lower part,', 'a top separator tangential inlet in the top separator upper part of the top separator housing for introducing an un-separated stream of gas and raw cement meal in suspension,', 'a top separator outlet in a lowermost end of the conical top separator lower part for discharging a first fraction of coarse cement raw meal material,', 'a top separator central tube extending with a free end axially into the top separator housing for diverting a second fraction of fine cement raw meal material and gas,, 'the top separator comprising a bottom separator housing comprising a substantially cylindrical bottom separator upper part and a substantially conical bottom separator lower part,', 'a bottom separator tangential inlet in the bottom separator upper part of the bottom separator housing for introducing an unseparated stream of gas and raw cement meal in suspension,', 'a bottom separator outlet in a lowermost end of the conical bottom separator lower part ...

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Номер записи: 36
27-01-2022 дата публикации

INDURATION MACHINE

Номер: US20220026149A1
Автор: SCHULAKOW-KLASS Andrej
Принадлежит:

An induration machine includes a travelling grate for transporting bulk material along a transport direction from a heating zone for heating and/or drying the material to a cooling zone for cooling the material by cooling gas. The machine includes a hood disposed over the travelling grate having a first hood section in the heating zone and a second hood section in the cooling zone; and two recuperation ducts for guiding used cooling gas from the second hood section to the first hood section. 2. The induration machine according to claim 1 , comprising means for collecting dust purged from the recuperation duct.3. The induration machine according to claim 1 , wherein a purge duct is connected to each purge opening4. The induration machine according to claim 1 , comprising a plurality of burners for heating the material in the heating zone claim 1 , which wherein the burners are directed downwards.5. The induration machine according to claim 4 , wherein at least some of the burners are directed vertically downwards and/or at least some of the burners are directed obliquely to the vertical direction6. The induration machine according to claim 4 , wherein at least some of the burners are disposed in the second hood section claim 4 , at least some of the burners are disposed in at least one gas supply duct and/or at least one of the burners is disposed in at least one gas collector duct.7. The induration machine according to claim 1 , wherein at least one gas supply duct is aligned obliquely to the transport direction.8. The induration machine according to claim 1 , wherein at least one gas supply duct is a T-connection between the recuperation ducts and the first hood section.9. The induration machine according to claim 1 , wherein a cross-section of at least one recuperation duct increases towards the at least one gas collector duct.10. The induration machine according to claim 1 , wherein at least one recuperation duct comprises a plurality of successive duct segments ...

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Номер записи: 37
11-01-2018 дата публикации

Method for Manufacturing Reduced Iron

Номер: US20180010202A1
Автор: Dong-won Kim, Jun-Hyuk Lee, Myoung-Kyun Shin, Sang-Hyun Kim
Принадлежит: Posco Co Ltd

Provided is a method for manufacturing reduced iron which includes the steps of: i) drying ores in an ore drier; ii) supplying the dried ores to at least one reduction reactor; iii) reducing the ores in the at least one reduction reactor and manufacturing reduced iron; iv) discharging exhaust gas by which the ores are reduced in the reduction reactor; v) branching the exhaust gas and providing the branched exhaust gas as ore feeding gas; and vi) exchanging heat between the exhaust gas and the ore feeding gas and transferring the sensible heat of the exhaust gas to the ore feeding gas. In the supplying the dried ores to the at least one reduction reactor, the dried ores are supplied to the at least one reduction reactor by using the ore feeding gas.

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Номер записи: 38
11-01-2018 дата публикации

Continuous furnace system having heat recycling device

Номер: US20180010856A1
Автор: Chang Lung Tseng
Принадлежит: King Yuan Dar Metal Enterprise Co Ltd

A furnace system includes a pre-heating zone disposed on a conveyer device, a furnace facility located behind the pre-heating zone and having a gas heating zone and an electrical heating zone for heating the work piece to the required or predetermined temperature, and a cooling zone for lowering the work piece to a room temperature, the furnace facility includes a heat recycling device connected to the cooling zone and the heating zone, and connected to the pre-heating zone, for collecting a heat energy in the cooling zone and in the heating zone and for supplying the collected heat energy to the pre-heating zone for pre-heating the work piece and for saving the energy.

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Номер записи: 39
03-02-2022 дата публикации

DEVICE FOR PREHEATING ROD-LIKE WORKPIECES

Номер: US20220034587A1
Автор: Günter Uwe, Sokoll Joachim
Принадлежит: extrutec GmbH

A device for preheating rod-like, metal workpieces, in particular aluminium rods, by means of a fluid flow heated by residual heat or waste heat of a combustion process occurring in a heating device for heating the workpieces. The device has a preheating chamber for receiving at least one workpiece, wherein, in order to transfer the heat from the fluid flow to a heat transfer medium flow in a fluid flow line between a fluid flow connection and the preheating chamber, a heat-exchanger unit is provided in such a way that the workpiece is preheated indirectly via the heat transfer medium flow heated in the heat-exchanger unit by the fluid flow. 124241224. A device for preheating rod-shaped , metallic workpieces () by means of a fluid flow heated by residual or waste heat of a combustion process taking place in a heating device for heating the workpieces () , the device having a preheating chamber () for receiving at least one workpiece () , wherein ,{'b': 11', '14', '12', '15', '24', '11', '25', '24', '23', '12, 'in order to transfer the heat from the fluid flow to a heat transfer medium flow, a heat exchanger device () beings provided between a fluid flow connection () and the preheating chamber () in a fluid flow line () in such a manner that the workpiece () is preheated indirectly via the heat transfer medium flow heated by the fluid flow in the heat exchanger device () and the liquid discharge device () extending parallel to the longitudinal axis (L) of the workpiece () disposed in the reception area () of the preheating chamber ()'}characterized in that{'b': 25', '28', '26', '24', '28', '12, 'the liquid discharge device () has a row of discharge openings () for realizing a substantially continuous wetting on the upper side () of the workpiece (), the row of discharge openings () extending in the longitudinal direction of the preheating chamber ().'}21225252624252324. The device according to claim 1 , wherein the preheating chamber () has the shape of a tube and a ...

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Номер записи: 40
17-01-2019 дата публикации

CEMENT KILN EXHAUST GAS POLLUTION REDUCTION

Номер: US20190015779A1
Автор: "DAmico Peter", Lesniak Thomas, Poling Christopher
Принадлежит:

A method for reducing pollution in a cement kiln environment and a system for treating cement kiln exhaust gas are provided. The method includes the steps of: treating a cement kiln exhaust gas stream with a treating fluid, such as a water soluble alkaline-earth metal sulfide. In one application, the treating fluid is injected by spraying droplets into the cement kiln exhaust gas stream. A system for treating cement kiln exhaust gas includes a reagent containing a water soluble alkaline-earth metal sulfide in water, and a nozzle to spray the reagent into the cement kiln exhaust gas stream. 1. A system for reducing pollution in a material processing environment comprising:a treating fluid comprising a reagent containing a water soluble alkaline-earth metal sulfide;at least one nozzle configured to communicate with a cement kiln exhaust gas stream;a first particulate collection system; andwherein the at least one nozzle is configured to inject the treating fluid into the cement kiln exhaust gas stream to form a combined stream before entering the particulate collection system and wherein the particulate collection system is configured to separate particulates comprising at least a portion of one heavy metal from the combined stream by forming modified cement kiln dust containing the heavy metal in non-leachable form.2. The system of claim 1 , wherein said treating fluid further comprises at least one of a surfactant claim 1 , a dispersant claim 1 , and a hyperdispersant.3. The system of claim 1 , wherein said at least one nozzle is configured to spray droplets having a size configured to allow said droplets to have a minimum residence time of about 1 second to about 4 seconds.4. The system of claim 3 , wherein said at least one nozzle is configured to spray droplets having an average size of at least about 20 microns.5. The system of claim 3 , wherein said at least one nozzle is configured to spray droplets having an average size of about 30 microns to about 40 ...

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Номер записи: 41
21-01-2016 дата публикации

COKELESS REVERBERATORY FURNACE FOR MELTING IRON WITH SEPARATE HEARTH AND MELTING CHAMBER

Номер: US20160017446A1
Автор: Abulnaga Baha Elsayed
Принадлежит:

The invention relates to a process of melting metal using a gaseous fuel, a liquid fuel or a pulverized solid fuel in a reverberatory furnace (FIG. ) consisting of a hearth (), an sloped melting chamber () a vertical refractory grid (), a burner (), a recuperator () to transfer heat from waste gas and products of combustion to fresh oxygen bearing gases, whereas a burner system is installed on the hearth for combustion of the fuel and oxygen bearing gas, the hearth under the burner acts as a superheater to achieve the temperature necessary for alloying and to receive the molten metal cascading from the sloped melting chamber, the sloped melting chamber being fed from one end by the rising gas products of combustion and in which the waste gases are subject to post-combustion of carbon monoxide and volatiles before passing through a recuperator or a regenerator to pre-heat the oxygen bearing gases necessary for combustion.

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Номер записи: 42
18-01-2018 дата публикации

HEAT TREATING DEVICE

Номер: US20180016651A1
Автор: Katsumata Kazuhiko
Принадлежит:

The present disclosure is characterized by inexpensively treating an ammonia gas contained in an exhaust gas after nitriding without performing combustion, adsorption using an adsorption agent, or the like. A vacuum carburizing device of the present disclosure includes a heating furnace which heats a workpiece, an ammonia gas supply device which supplies an ammonia gas and nitrides the workpiece to the heating furnace, and a thermal decomposition furnace which thermally decomposes the ammonia gas discharged from the heating furnace after nitriding. 1. A heat treating device , comprising:a heating furnace which heats a workpiece;an ammonia gas supply device which supplies an ammonia gas which nitrides the workpiece to the heating furnace; anda thermal decomposition furnace which thermally decomposes the ammonia gas discharged from the heating furnace after the nitriding.2. The heat treating device according to claim 1 ,wherein the thermal decomposition furnace includesa reactant which promotes a thermal decomposition reaction of the ammonia gas,a heating chamber which accommodates and heats the reactant,an introduction pipe through which the ammonia gas is introduced to the heating chamber,a vacuum container which surrounds the heating chamber, anda vacuum pump which evacuates the inside of the vacuum container.3. The heat treating device according to claim 2 ,wherein the reactant is formed in a recessed shape which surrounds a tip of the introduction pipe.4. The heat treating device according to claim 2 ,wherein the reactant includes a flow passage inside the reactant, andwherein a tip of the introduction pipe is connected to the flow passage.5. The heat treating device according to claim 4 ,wherein the flow passage is formed in a spiral shape.6. The heat treating device according to claim 4 ,wherein the flow passage is formed in a zigzag shape.7. The heat treating device according to claim 2 , further comprising:an exhaust pipe which is provided on the downstream ...

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Номер записи: 43
18-01-2018 дата публикации

METHOD AND DEVICE FOR PROCESSING FLUE DUST

Номер: US20180016659A1
Автор: Hoppe Michael, Kadereit Harald, Schmidl Jürgen, Specht Andreas
Принадлежит:

The method and the device serve to treat the flue dust formed during the production of nonferrous metals. After the addition of sulfur and/or a sulfur compound, the flue dust is heated, and volatile compounds are separated in a downstream offgas treatment unit. The flue dust is heated in an inert atmosphere. 1. A method for processing flue dust formed during production of copper based on a smelting process of copper ores , the method comprising the steps of: adding sulfur and/or a sulfur compound to the flue dust; heating the flue dust in an inert atmosphere after the addition of the sulfur and/or sulfur compound; and separating volatile components , the flue dust being subjected to a pyrometallurgical treatment in a fluidized bed reactor in which the flue dust is heated in an inert atmosphere , the pyrometallurgical treatment producing an offgas that is subjected to an offgas treatment for removing arsenic-sulfur compounds as volatile elements , wherein treatment of the flue gas is carried out as a continuous process.2. The method according to claim 1 , including volatilizing arsenic in elementary form or in form of arsenic-sulfur compounds and then separating the arsenic or arsenic-sulfur compound from the flue dust.3. The method according to claim 1 , including processing the flue dust at ambient pressure.4. The method according to claim 1 , including carrying out the treatment of the flue dust at a negative pressure.5. The method according to claim 1 , including carrying out the treatment of the flue at a positive pressure.6. The method according to claim 1 , wherein an average amount of sulfur dioxide in the offgas is no greater than 5 vol. %.7. The method according to claim 1 , wherein the heating of the flue dust includes heating the flue dust at least temporarily to a temperature in the range of 500-1 claim 1 ,000° C. The present application is a Divisional application of U.S. patent application Ser. No. 13/583,832, filed Oct. 23, 2012, which is a 371 of ...

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Номер записи: 44
18-01-2018 дата публикации

PLANT AND METHOD FOR RECOVERING METALS AND/OR METAL OXIDES FROM INDUSTRIAL PROCESS WASTE, IN PARTICULAR REFINERY WASTE

Номер: US20180017327A1
Автор: Bruno Lorenzo, Carlessi Lino, Galati Rosario
Принадлежит:

A plant for recovering metals and/or metal oxides from industrial process waste, in particular oil product refining waste, comprises a furnace; a feed line connected to a main inlet of the furnace and configured to feed the furnace with a solid waste containing metals, in particular in oxide form; an outlet line, connected to a solid phase outlet of the furnace and configured to draw a metal-enriched solid phase out of the furnace; the furnace is a belt conveyor furnace having a belt conveyor closed in a loop with a substantially horizontal configuration and having a top face, which receives the waste to treat and conveys it between two longitudinal opposite ends of the belt conveyor furnace respectively provided with the main inlet and the solid phase outlet. 128-. (canceled)29. A plant configured to recover at least one of a metal and a metal oxide from industrial process waste , said plant comprising: an inner chamber extending along a substantially horizontal longitudinal axis, and', 'a belt conveyor housed in the inner chamber and closed in a loop with a substantially horizontal configuration along the axis, said belt conveyor including a top face configured to receives a solid waste containing a metal to treat and configured to convey the solid waste along the axis in the inner chamber between a first longitudinal end of the belt conveyor furnace where a main inlet is located and a second, opposite longitudinal end of the belt conveyor furnace where a solid phase outlet is located,, 'a belt conveyor furnace includingan inlet line connected to the main inlet of the belt conveyor furnace and configured to feed the belt conveyor furnace with the solid waste, andan outlet line connected to the solid phase outlet of the belt conveyor furnace and configured to draw a metal-enriched solid phase out from the belt conveyor furnace.30. The plant of claim 29 , wherein:the first end of the belt conveyor furnace is associated with a flue gas outlet connected to a flue gas ...

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Номер записи: 45
28-01-2016 дата публикации

PIPE BUNDLE RECUPERATOR ON A SINTERING FURNACE AND THERMAL TRANSFER METHOD HAVING A SINTERING FURNACE AND HAVING A PIPE BUNDLE RECUPERATOR

Номер: US20160025413A1
Автор: Albert Rene, ERNST Eberhard, Schupp Thomas
Принадлежит:

The invention relates to a pipe bundle recuperator on a sintering furnace for thermal transfer between at least one first fluid, a second fluid and a third fluid. The pipe bundle recuperator comprises the following: at least one first pipe bundle having a first pipe bundle entrance, a first pipe and a first pipe bundle exit for guiding the first fluid and at least one second pipe bundle having a second pipe bundle entrance, a second pipe and a second pipe bundle exit for guiding the second fluid, an outside pipe for guiding the third fluid, wherein the first pipe bundle and the second pipe bundle are arranged at least partially within the outside pipe, and, additionally, a fluid conducting system arranged in an interior region of the outside pipe for forced guidance of the third fluid along a course which is helical at least in regions, wherein the fluid conducting system has at least one first fluid conducting component. The invention further relates to a thermal transfer method having a sintering furnace and having a pipe bundle recuperator. 1. A pipe bundle recuperator for thermal transfer between at least a first fluid , a second fluid and a third fluid , preferably for heating at least the first fluid and the second fluid by transfer of thermal energy from the third fluid to the first fluid and the second fluid , wherein the pipe bundle recuperator is arranged on a sintering furnace , said pipe bundle recuperator comprising:at least one first pipe bundle having a first pipe bundle entrance a first pipe and a first pipe bundle exit for guiding the first fluid, and at least one second pipe bundle having a second pipe bundle entrance, a second pipe and a second pipe bundle exit for guiding the second fluid,an outer pipe for guiding the third fluid, wherein the first pipe bundle and the second pipe bundle are arranged at least partially within the outer pipe, and,additionally, a fluid conducting system arranged in an interior region of the outer pipe for forced ...

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Номер записи: 46
25-01-2018 дата публикации

METHOD FOR OPERATING BLAST FURNACE

Номер: US20180023152A1
Автор: KAWASHIMA Tomoyuki, MURAO Akinori, OOYAMA Nobuyuki, Yamamoto Naoki
Принадлежит: JFE STEEL CORPORATION

To provide a method for operating a blast furnace with which the combustion efficiency of a solid fuel, such as pulverized coal, is improved, thereby making it possible to improve productivity and reduce COemissions. Pulverized coal and oxygen are blown from an upstream lance configured by a double tube, and LNG is blown from a downstream lance on the downstream side in a hot air blast direction, so that oxygen to be used for combustion of the LNG is supplied from the upstream lance , and the pulverized coal whose temperature has been increased by the combustion of the LNG is combusted along with the supplied oxygen or oxygen in an air blast. When a direction perpendicular to the hot air blast direction is designated as 0°, and a downstream direction and an upstream direction therefrom in the hot air blast direction are designated as positive and negative, respectively, a blowing direction of the LNG from the downstream lance with respect to the blast direction ranges from −30° to +45°, and a blowing position of the LNG from the downstream lance with reference to a position at which the upstream lance is inserted into a blast pipe ranges from 160° to 200° in terms of a blast pipe circumferential direction angle. 1. A method for operating a blast furnace , in which hot air is blown into a blast furnace from a blast pipe through a tuyere , the method comprising:using a double tube as an upstream lance for blowing a solid fuel into the blast pipe;blowing one of the solid fuel and combustion-supporting gas from one of an inner tube of the upstream lance and a gap between the inner tube and an outer tube, and blowing the other of the solid fuel and the combustion-supporting gas from the other of the inner tube and the gap between the inner tube and the outer tube;disposing a downstream lance on a downstream side in a blast direction of the hot air from a blowing end part of the upstream lance; andblowing flammable gas from the downstream lance.2. The method for operating ...

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Номер записи: 47
24-01-2019 дата публикации

THERMOELECTRIC GENERATION APPARATUS, HEAT GENERATION APPARATUS FOR FUEL STORAGE TANKS, AND WASTE HEAT RECOVERY SYSTEM

Номер: US20190024561A1
Автор: KIM Jae-Gwan, KIM Yong-Kyu, LEE Dong-Kil, LEE Ho-Ki
Принадлежит:

Disclosed are a thermoelectric generation apparatus, a heat generation apparatus for fuel storage tanks, and a waste heat recovery system. The thermoelectric generation apparatus according to an embodiment of this disclosure includes a first piping through which a fluid flows, a second piping through which a cooling medium of a lower temperature than the fluid flows so as to radiate the heat of the fluid, a plurality of first radiating fins having one side in contact with air of a lower temperature than the fluid so as to radiate the heat of the fluid and the other side in contact with the second piping, and a thermoelectric generation module provided between the first piping and the second piping to produce electricity through a temperature difference between the first piping and the second piping. 1. A thermoelectric generation apparatus comprising:a first piping through which a fluid flows;a second piping through which a cooling medium of a lower temperature than the fluid flows so as to radiate the heat of the fluid;a plurality of first radiating fins having one side in contact with air of a lower temperature than the fluid so as to radiate the heat of the fluid and the other side in contact with the second piping; anda thermoelectric generation module provided between the first piping and the second piping to produce electricity through a temperature difference between the first piping and the second piping.2. The thermoelectric generation apparatus according to claim 1 , further comprising one or more heat conducting plates to partition the second piping along a direction in which the cooling medium flows.3. The thermoelectric generation apparatus according to claim 2 , further comprising second radiating fins which are in contact with the heat conducting plates and protrude in the same direction as the protruding direction of the first radiating fins.4. The thermoelectric generation apparatus according to claim 1 , wherein the second piping has one of a ...

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Номер записи: 48
24-04-2014 дата публикации

Process and plant for producing cement clinker and for purifying the offgases formed

Номер: US20140109800A1
Автор: Franz-Josef Zurhove
Принадлежит: ELEX CEMCAT AG

The invention relates to a process and a plant for producing cement clinker and for purifying the off-gases formed thereby, wherein cement raw meal is preheated in a preheater by means of hot off-gases and then optionally precalcined, the preheated and optionally precalcined cement raw meal is burnt in a rotary kiln to form cement clinker, the cement clinker is cooled in a cooler, the hot off-gases used in the preheater are used in a raw mill for treating the cement raw meal, the dust content of a dust-containing mill off-gas thereby formed is reduced in a separating device to less than 5 g/Nm 3 , preferably less than 1 g/Nm 3 , alkali hydrogen carbonate and/or alkali carbonate is added to and mixed with the mill off-gas whose dust content has been reduced to less than 5 g/Nm 3 , and the mixed gas thereby formed is subsequently fed to a process filter for separation of dust laden with pollutants.

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Номер записи: 49
24-01-2019 дата публикации

Duct system with integrated working platforms

Номер: US20190024980A1
Автор: Gabriele Carinci, Richard Manasek
Принадлежит: Amerifab Inc

A duct system of an electric arc furnace includes a plurality of walls each including sinuously winding piping having an inlet and an outlet, and a portion of a first wall of the plurality of walls forming a working platform. The platform is movable between a raised position and a lowered position. In the raised position, the portion of the first wall is disposed in proximate vertical alignment with the remainder of the first wall. In the lowered position, the portion of the first wall is disposed substantially perpendicularly to the remainder of the first wall. The portion of the first wall is sized to occupy a cross-sectional area formed by the plurality of walls such that the portion of the first wall is disposed in close proximity to the other of the plurality of walls.

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Номер записи: 50
23-01-2020 дата публикации

METALLURGICAL FURNACE HAVING AN INTEGRATED OFF-GAS HOOD

Номер: US20200025448A1
Автор: FERGUSON Scott A., WARD Troy D.
Принадлежит:

An apparatus is disclosed for a metallurgical furnace having a roof with an integrated off-gas hood. The roof has a hollow metal roof section. The hollow metal roof section has a top and a bottom surface. The hollow metal roof section has a center opening configured for one or more electrodes to pass therethrough. An enclosed space is disposed between the top and the bottom surface. A spray-cooled system is disposed in the enclosed space and configured to spray-coolant on the bottom surface of the roof. The integrated off-gas hood has an inlet open to the center opening. The spray-cooled system is also configured to cool the integrated off-gas hood. 1. A spray-cooled roof for a ladle metallurgical furnace , the spray-cooled roof comprising: a top surface and a bottom surface;', 'an opening configured for one or more electrodes to pass therethrough;', 'an enclosed space disposed between the top and the bottom surface; and', 'a spray-cooled system disposed in the enclosed space and configured to spray-coolant on the bottom surface of the roof;, 'a hollow metal roof section, the hollow metal roof section comprisingan integrated off-gas hood has an inlet open to the opening in the hollow metal roof section2. The spray-cooled roof of wherein the spray-cooled system is also configured to cool the integrated off-gas hood.3. The spray-cooled roof of wherein the opening further comprises:a sidewall, wherein the inlet is disposed on the sidewall of the opening.4. The spray-cooled roof of further comprising:a channel fluidly coupled to the inletan outlet fluidly coupled to the channel opposite the inlet.5. The spray-cooled roof of wherein the channel has a step therein such that the inlet is vertically further from a plane of the top surface than the outlet.6. The spray-cooled roof of wherein the top surface is flat at or near the opening.7. The spray-cooled roof of further comprising:a door operable between an open position and a closed position wherein the door in the closed ...

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Номер записи: 51
01-05-2014 дата публикации

Heat Exchange Elements for Use in Pyrometallurgical Process Vessels

Номер: US20140116875A1
Автор: Bayer Ingo, Olmstead Bruce Ringsby
Принадлежит:

A pyrometallurgical vessel for the production of metal by the electrolytic reduction of a metal bearing material dissolved in a molten salt bath, the cell including a shell and a lining on the interior of the shell, the lining including a bottom cathode lining and a side wall lining at least one of the bottom cathode lining and a side wall lining including a plurality of fluid ducts positioned within the lining for conducting a fluid therethrough, the flow of fluid through the ducts within the linings having 3-dimensional directional flow provided by 3-dimensional shapes inserted into the ducts or the ducts comprising a number of straight sections joined by curved sections arranged in a 3-dimensional shape, the 3-dimensional shapes of the ducts or the 3-dimensional shapes inserted into the ducts. The 3-D shapes in the ducts or the 3-D shape of the ducts are in such a way that secondary flows in the fluid are formed, broken and reformed imparting greater advection in the flow. 1. A pyrometallurgical vessel for the production of metal by the electrolytic reduction of a metal bearing material dissolved in a molten salt bath , the vessel , includinga shell anda lining on the interior of the shell, the lining including:a bottom cathode lining and a side wall lining, at least one of the bottom cathode lining and the side wall lining including a plurality of fluid duets positioned within the lining for conducting a fluid therethrough, the flow of fluid through the ducts within the linings having 3-dimensional chaotic flow provided bya. 3-dimensional ridges located on the inner surface of the ducts within the ducts: the height and length of the 3-dimensional ridges varying along the length of the ducts such that 5 to 50% of the main cross-sectional dimension of the duct is interrupted by the presence of the ridges; orb. the ducts arranged in a 3-dimensional geometry comprising a number of straight sections joined by curved sections; the direction of the ducts in the lining ...

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Номер записи: 52
17-02-2022 дата публикации

Metallurgical furnace having an integrated off-gas hood

Номер: US20220049900A1
Автор: Scott A. Ferguson, Troy D. Ward
Принадлежит: Systems Spray Cooled Inc

An apparatus is disclosed for a metallurgical furnace having a roof with an integrated off-gas hood. The roof has a hollow metal roof. The hollow metal roof has a top, a bottom, an outer sidewall and an inner sidewall. An opening extends from the top to the bottom and is defined by the inner sidewall. The opening is configured for one or more electrodes to pass therethrough. An enclosed space is defined between the top, the bottom, the inner sidewall and the outer sidewall. A spray-cooled system is disposed in the enclosed space and configured to spray coolant in the enclosed space on the bottom surface of the hollow metal roof. A channel having walls is disposed through the enclosed space, wherein the spray-cooled system extends between the top of the hollow metal roof and the wall of the channel.

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Номер записи: 53
31-01-2019 дата публикации

INDUSTRIAL FURNACE AND METHOD OF UTILIZING HEAT THEREFROM

Номер: US20190032999A1
Автор: HANZAWA Shigeru, YASUE Takashi
Принадлежит: NGK Insulators, Ltd.

A continuous industrial furnace comprising: an inlet; a heating zone; a cooling zone; and an outlet in this order, the continuous industrial furnace being configured to heat-treat a workpiece while conveying the workpiece from the inlet to the outlet, wherein at least a part of the heating zone comprises a furnace wall heat insulation structure, the furnace wall heat insulation structure comprising: an outer wall having one or more gas introducing ports; and a porous thermal insulation layer arranged with a gap on an inner side of the outer wall; and wherein the heating zone further comprises one or more exhaust ports for sucking and discharging the gas after the gas flows into the heating zone of the furnace from the gas introducing ports through the gap and the porous thermal insulation layer In this order and then flows toward the inlet side. 1. A continuous industrial furnace comprising: an inlet; a heating zone; a cooling zone; and an outlet in this order , the continuous industrial furnace being configured to heat-treat a workpiece while conveying the workpiece from the inlet to the outlet ,wherein at least a part of the heating zone comprises a furnace wall heat insulation structure, the furnace wall heat insulation structure comprising: an outer wall having one or more gas introducing ports; and a porous thermal insulation layer arranged with a gap on an inner side of the outer wall; andwherein the heating zone further comprises one or more exhaust ports for sucking and discharging the gas after the gas flows into the heating zone of the furnace from the gas introducing ports through the gap and the porous thermal insulation layer In this order and then flows toward the inlet side.2. The continuous industrial furnace according to claim 1 , wherein the gas discharged from the exhaust ports has a temperature of from 100 to 600° C.3. The continuous industrial furnace according to claim 1 , wherein the furnace comprises a portion where an internal temperature of ...

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Номер записи: 54
31-01-2019 дата публикации

Thermal chamber exhaust structure and method

Номер: US20190035653A1
Автор: Chun-Chih Lin, Chune-Te YANG, Hsien-Chang Hsieh, Tah-Te Shih, Wen-Hsong Wu, Yu-Jen Su
Принадлежит: Taiwan Semiconductor Manufacturing Co TSMC Ltd

An exhaust structure includes an intake section including a first high thermal conductivity material, the intake section having an inlet, an output section including a second high thermal conductivity material, the output section having an outlet, and a piping section including a third high thermal conductivity material, the piping section being configured to communicatively couple the intake section with the output section. The exhaust structure provides a high thermal conductivity path from the inlet to the outlet, the high thermal conductivity path including the first high thermal conductivity material, the second high thermal conductivity material, and the third high thermal conductivity material.

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Номер записи: 55
09-02-2017 дата публикации

IMMERSION HEATER FOR MOLTEN METAL

Номер: US20170038146A1
Автор: Cooper Paul V.
Принадлежит:

The invention relates to a device for heating molten metal by the use of a heater that can be immersed into the molten metal. This immersion heater includes an outer cover formed of one or more materials resistant to the molten metal in which the immersion heater is to be used, and a heating element inside of the outer cover, where the heating element is protected from contacting the molten metal. 1. A device comprising:a vessel for containing molten metal, the vessel having a length, a width, a top surface, a first chamber and a second chamber;a plurality of immersion heaters positioned in line across the width of the vessel, each of the plurality of immersion heaters comprising an outer cover of material resistant to molten metal and a heating element inside of the outer cover, the heating element connectable to an energy source, the outer cover comprised of a material formulated to be resistant to the molten metal, wherein the outer cover protects the heating element from contacting the molten metal when the immersion heater is positioned in the molten metal; andwherein the plurality of immersion heaters divides the vessel into the first chamber and the second chamber.2. The device of claim 1 , wherein the energy source of each heating element is a source of electricity.3. The device of claim 1 , wherein each heating element is one or more wire coils.4. The device of claim 1 , wherein each immersion heater is rectangular.5. The device of claim 1 , wherein each outer cover is comprised of one or more of graphite and ceramic.61. The device of claim 1 , wherein each outer cover is molded over each heating element.7. The device of claim 1 , wherein each outer cover has a cavity and the heating element corresponding to each outer cover is positioned in the cavity.8. The device of claim 1 , wherein the vessel has a top surface and further comprises one or more insulated covers to cover a portion of the top surface of the vessel.9. The device of claim 8 , wherein at ...

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Номер записи: 56
09-02-2017 дата публикации

METHOD AND SYSTEM FOR THE DENITRIFICATION OF FLUE GASES BY MEANS OF SNCR (SELECTIVE NON-CATALYTIC REDUCTION) AND DOWNSTREAM CATALYST FOR AMMONIA DECOMPOSITION

Номер: US20170038147A1
Автор: SCHÜRMANN Heiko
Принадлежит:

A method for denitrification of flue gases and a system, wherein flue gases generated in a rotary kiln are conveyed to a calcining zone for the deacidification of raw cement meal. Aqueous ammonia solution, ammonia, or ammonia-releasing substances for denitrifying the flue gases injected into the calcining zone according to the method of selective non-catalytic reduction (SNCR), and the flue gas stream, together with an ammonia slip generated during the denitrification, is passed through a heat exchanger and through at least one dedusting device. The flue gas is guided through a exhaust gas line via a catalyst for the decomposition of excess ammonia with residues of nitrogen oxide in accordance with a method of selective catalytic reduction (SCR), wherein the catalyst is arranged in a reactor provided in the exhaust line, and is no larger than is required for a sufficient decomposition of the ammonia. 1. A method of denoxing flue gases comprising:guiding flue gases which arise in a rotary kiln for sintering of cement clinker into a calcination zone for deacidification of raw meal,injecting aqueous ammonia solution, ammonia or substances that release ammonia for denoxing of the flue gases by the method of selective noncatalytic reduction (SNCR) into the calcination zone, and{'b': '10', 'guiding the flue gas stream together with any ammonia slip that arises in the denoxing through a heat exchanger and at least one device for dedusting (),'}whereinthe flue gas stream is conducted from the heat exchanger through a heat exchanger offgas conduit via a catalyst for degradation of excess ammonia with residues of nitrogen oxide present in the flue gas over the catalyst in accordance with a method of selective catalytic reduction (SCR), and,wherein the catalyst is disposed in a reactor provided within the heat exchanger offgas conduit and dimensions of the catalyst are only as great as required for the given degree of ammonia degradation in the particular case.2. The method as ...

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Номер записи: 57
08-02-2018 дата публикации

Method and plant for denitrifying bypass gases in a multi-stage system of mixing chambers in a plant for producing cement clinker

Номер: US20180038648A1
Автор: Gussmann Rolf, Hand Andreas, Nassenstein Florian, Schuermann Heiko
Принадлежит:

A method and a corresponding plant for denitrifying bypass exhaust gases in a cement clinker production plant. Raw meal is sintered in a rotary kiln and deacidified in a calciner. A rotary kiln inlet chamber is connected to the calciner directly or by a riser duct. Bypass exhaust gas is drawn off near the inlet chamber. This exhaust gas is guided into a first mixing chamber, in which the exhaust gas is cooled to between 800 and 950 degrees C., then the exhaust gas is guided through a reaction pipeline segment, wherein the dwell time is between 0.5 and 3 seconds and ammonia, aqueous ammonia solution, or ammonia-releasing substances are injected for denitrification. Then the exhaust gas is guided into a second mixing chamber, in which the exhaust gas is cooled to between 150 250 degrees C. Then the exhaust gas is guided to a filter for dust removal. 19-. (canceled)10. A method for the denitrification of bypass exhaust gases in a plant for producing cement clinker , whereinthe plant has a rotary kiln for the sintering of raw meal to cement clinker, and has a calciner for the deacidification of the raw meal, downstream of the rotary kiln in the kiln exhaust gas flow direction,the rotary kiln has a rotary kiln inlet chamber which is connected directly or via a kiln riser duct to the calciner, andthe bypass exhaust gas is drawn off in the region of the rotary kiln inlet chamber, comprising the steps: 'the bypass exhaust gas is cooled in the first mixing chamber to a temperature of between 800° C. and 950° C.,', 'passing of the bypass exhaust gas into a first mixing chamber, where'} the residence time of the bypass exhaust gas in the reaction section is between 0.5 s and 3 s, and where', 'ammonia, aqueous ammonia solution or ammonia-releasing substances are injected into the reaction section for the denitrification of the bypass exhaust gas by the process of selective non-catalytic reduction (SNCR),, 'passing of the bypass exhaust gas from the first mixing chamber through ...

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Номер записи: 58
08-02-2018 дата публикации

ADJUSTABLE HEAT EXCHANGE APPARATUS AND METHOD OF USE

Номер: US20180038655A1
Автор: Manasek Richard J.
Принадлежит:

A pipe-within-a-pipe and method of use are provided. The pipe-within-a-pipe comprises a first tube overlaying a second tube. The first tube and the second tube have different structures in some respect. 1. A heat exchange apparatus configured to cool exhaust gases emanating from a furnace , comprising:a mounting member adapted to be coupled to a furnace; anda pipe comprising an inner tube and an outer tube overlaying and contacting the inner tube, the pipe adapted to be located inside the furnace where the outer tube is positioned and adapted to contact and withstand a corrosive gas from the furnace having a temperature exceeding 4000° F.;wherein, the inner tube and the outer tube are coaxial and coextensive with one another;wherein, the mounting member and the pipe are coupled together; andwherein, the inner tube is manufactured from a first selected material and the outer tube is manufactured from a second selected material;further wherein, the heat exchange apparatus is configured to cool the corrosive gas from a temperature exceeding 4000° F. to a temperature between 200-350° F.2. The heat exchange apparatus of claim 1 , wherein the first selected material is selected from the list consisting of a ferrous metal claim 1 , steel claim 1 , copper claim 1 , aluminum claim 1 , a steel ferrous alloy claim 1 , a copper alloy claim 1 , nickel claim 1 , titanium claim 1 , a bronze alloy claim 1 , an aluminum-bronze alloy claim 1 , and a nickel-bronze alloy and the second selected material is selected from the list consisting of a ferrous metal claim 1 , steel claim 1 , copper claim 1 , aluminum claim 1 , a steel ferrous alloy claim 1 , a copper alloy claim 1 , nickel claim 1 , titanium claim 1 , a bronze alloy claim 1 , an aluminum-bronze alloy claim 1 , and a nickel-bronze alloy.3. The heat exchange apparatus of wherein the mounting member comprises a plate.4. The heat exchange apparatus of wherein the plate is configured to mount together the pipe and a piece of ...

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Номер записи: 59
12-02-2015 дата публикации

Metal melting furnace

Номер: US20150042024A1
Автор: Mitsukane Nakashima
Принадлежит: Meichu Kk

A metal melting furnace which can more effectively melt the melting material and hold the temperature of the molten material so as reduce the fuel economy compared with the past, that is, a metal melting furnace which has a material charging port and a flue at its top and is provided with a melting chamber which is provided with a heating plate which melts a melting material which is charged from the material charging port at its bottom, wherein a heating burner is disposed at a bottom side of the heating plate of the melting chamber, the heating burner is used to melt the melting material on the heating plate, and exhaust gas of the heating burner which circulates through the exhaust gas channel is used to preheat the melting material of the flue and in that at a bottom side of the heating burner of the melting chamber, a molten material holding section to which molten material which was melted on the heating plate flows down into to be stored is formed, and the heating burner is used to hold the temperature of the molten material.

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Номер записи: 60
12-02-2015 дата публикации

Deacidification process and apparatus thereof

Номер: US20150044128A1
Автор: Chengkun LONG, Chunlei Wu, Xianjian DUAN, Yuelin Wang
Принадлежит: Guangzhou Gbs High-Tech & Industry Co Ltd

A deacidification apparatus and a deacidification process using the apparatus are disclosed. The deacidification apparatus includes a deacidification furnace, of which a furnace upper section, a furnace middle section and a furnace lower section are provided in upper, middle and lower portions respectively, wherein a gas-solid mixture inlet ( 1 ), a exhaust outlet ( 3 ) and a filtered air port ( 2 ) are provided on the furnace upper section, a product outlet ( 13 ) is provided on the furnace lower section, the upper portion of the deacidification is mounted with a filter ( 5 ) to which the gas-solid mixture inlet ( 1 ), the exhaust outlet ( 2 ) and the filtered air port ( 3 ) are connected, the filtered air port ( 2 ) is connected with a gas pulse device and a vacuum device by a three-way connecting device, and the exhaust outlet ( 3 ) is connected with atmosphere or connected with the vacuum device.

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Номер записи: 61
12-02-2015 дата публикации

Method for processing coke oven gas

Номер: US20150044129A1
Автор: Ernst Haidegger, Harald SCHMADERER, Holger Schmigalle, Nicole Schodel, Volker Göke
Принадлежит: Linde GmbH

The invention relates to a method for processing coke oven gas, said coke oven gas containing hydrogen, wherein the coke oven gas is at least partially integrated into a method for producing dimethyl ether in conjunction with a gas containing carbon monoxide and/or carbon dioxide, whereby a DME-containing product gas is formed. At the outset of the method for the formation of dimethyl ether, a ratio of hydrogen to carbon monoxide, weighted with the carbon dioxide concentration (formula (I)), of 0.9 to 1.1 is set, wherein the DME-containing product gas is integrated into a method for converting dimethyl ether to olefins, whereby an olefin-containing product gas is formed, and wherein olefins, in particular ethylene and/or propylene, is/are separated from the olefin-containing product gas by means of separating methods. c  [ H   2 ] - c  [ CO   2 ] c  [ CO ] + c  [ CO   2 ] ( I )

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Номер записи: 62
06-02-2020 дата публикации

Feeder Device Utilized In Electric Arc Furnace, And Flue Gas And Temperature Control Method

Номер: US20200041206A1
Автор: Cunzhen TAN, Qiming Huang, Weizhi SHI, Yuchuan Zhang, Zhan Gao
Принадлежит: CISDI Engineering Co Ltd

A sealed feeder device utilized in an electric arc furnace (1), and a flue gas and temperature control method. The sealed feeder device comprises a sealed feeding chute (5) having an outlet sealedly communicating with a side wall of the electric arc furnace (1), and a material blocking sealed arc-shaped door (3) disposed in the sealed feeding chute (5). The material blocking sealed arc-shaped door (3) separates the sealed feeding chute (5) into a cold steel scrap storage chamber (18) and a material feeding and dedusting chamber (2), and is operated by a driving mechanism (34) to separate or connect the cold steel scrap storage chamber (18) and the material feeding and dedusting chamber (2). The method comprises: adopting the feeder device to divide the flue gas of the electric arc furnace (1) into two paths, and controlling, by a flue gas adjustment device (16), a ratio of a flue gas flow from a flow-splitting dust removal pipe (11) to that from a dust removal pipe (4) to obtain a required flue gas mixture temperature.

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Номер записи: 63
18-02-2021 дата публикации

Drying Apparatus and Method of Drying

Номер: US20210048245A1
Автор: Player Tyler
Принадлежит:

A process and apparatus for drying materials inside a kiln that sends heat produced from a wood burning furnace through an air-to-air heat exchanger to separate the dirty particles from the wood burning process, after which the clean hot air enters the kiln to dry the materials. 1: A process for drying materials in a kiln , the process comprising the steps of:Using a wood burning furnace to generate hot air;Sending the hot air into an air-to-air heat exchanger that separates the hot air into dirty air and clean air; andSending the clean air into the kiln.2: The process of claim 1 , further comprising the steps of:Using a first fan to pull hot air out of the wood burning furnace and into the air-to-air heat exchanger.3: The process of claim 2 , further comprising the step of using a second fan to pull the clean air out of the air-to-air heat exchanger and into the kiln.4: The process of claim 3 , wherein the second fan is connected to the kiln and extracts extracted air from the kiln.5: The process of further comprising the step of:sending the extracted air into the air-to-air heat exchanger.6: The process of claim 5 , further comprising the step of:exhausting the dirty air out of the air-to-air heat exchanger.7: The process of claim 1 , wherein the wood burning furnace generates a consistent level of heat that is between approximately 700 degrees Fahrenheit and 1000 degrees Fahrenheit.8: The process of claim 1 , wherein the clean air is approximately between 300 degrees Fahrenheit and 500 degrees Fahrenheit as it enters the kiln.9: The process of claim 4 , wherein the air is between approximately 100 degrees and 250 degrees when it is extracted from the kiln.10: The process of wherein the first fan and second fan are each hot air induced draft fans.11: A drying apparatus adapted to dry materials in a kiln claim 3 , the drying apparatus comprising:A wood burning furnace that is connected to an air-to-air heat exchanger, the air-to-air heat exchanger connected to the ...

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Номер записи: 64
15-02-2018 дата публикации

Device for heating iron and steel products, and method for heating iron and steel products

Номер: US20180044758A1
Автор: Kimio Iino, Shinichi Koga, Yasuyuki Yamamoto
Принадлежит: Nisshin Steel Co Ltd, Taiyo Nippon Sanso Corp

A device for heating an iron and steel product (steel product), the device including: a preheating chamber for preheating the steel product; a heating chamber for heating the steel product to a desired temperature which is connected to the preheating chamber; a plurality of burners arranged so as to sandwich the steel product from above and below in the heating chamber; and a means for causing an exhaust gas containing combustion gas in the burners to flow into the preheating chamber, wherein the burners form flames with a fuel and an oxidizing agent having an oxygen concentration of 80 vol % or more and have a function of blowing away fats and oils adhered onto the surface of the steel product by the flames, and the preheating chamber has a structure for preheating the steel product by an exhaust gas which has been made to flow thereinto by the means.

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Номер записи: 65
15-02-2018 дата публикации

GAS EXHAUSTING SYSTEM AND METHOD FOR EXHAUSTING GAS

Номер: US20180045466A1
Автор: CHEN A-TZU, CHEN CHANG-FA, LIANG WANG-TSUNG, YU MING-HUI
Принадлежит:

A gas exhausting system includes at least two gas exhausting modules. The at least two gas exhausting modules are disposed on a heating furnace, and arranged at a front position and a rear position separately along a transporting direction of the heating furnace. Each gas exhausting module has a casing and an exhausting channel. The exhausting channel is arranged in the casing, and has an opening end. The opening end of the exhausting channel is lower than the second end of the casing. The exhausting channel is connected to a blowing machine. When the blowing machine is driven, gas is propelled into the exhausting channel, and hyperbaric gas can be exhausted upward from the opening end of the exhausting channel. The gas with higher flow velocity can provide a siphonic action, so as to accelerate gas to be exhausted from the heating furnace. 1. A gas exhausting system , disposed in a heating furnace , the heating furnace having a furnace body to process a workpiece , the workpiece being movable in the furnace body along a transporting direction , the gas exhausting system comprising:at least two gas exhausting modules, disposed on the heating furnace at a front and a rear positions respectively along a transporting direction of the heating furnace, wherein each of the gas exhausting modules has a casing and an exhausting channel, and two ends of the casing are respectively defined as a first end and a second end, the first end and the second end being opened, the first end being connected to an exhaust pending region in the furnace body of the heating furnace, the exhausting channel having an opening end formed on an upper end thereof, the opening end of the exhausting channel being lower than the second end of the casing, one side of the exhausting channel being formed with a lateral opening, the lateral opening connected with a blowing machine, wherein the blowing machine is capable of propelling air into the exhausting channel, and a hyperbaric gas is upward ...

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Номер записи: 66
08-05-2014 дата публикации

OFF-GAS CHANNEL

Номер: US20140124993A1
Автор: Pekkala Olli
Принадлежит: OUTOTEC OYJ

An off-gas channel () of a closed-type smelting furnace (), the off-gas channel () comprising a first end () opening to the upper part of the smelting furnace () and a second end () opening to a gas cleaning apparatus () for leading the furnace off-gases to the gas cleaning apparatus. The off-gas channel comprises at least one cleaning nozzle () adapted to spray pressurized fluid to the inner surface of the off-gas channel. 1. An off-gas channel of a closed-type smelting furnace , the off-gas channel comprising a first end opening to the upper part of the smelting furnace and a second end opening to a gas cleaning apparatus for leading the furnace off-gases to the gas cleaning apparatus , characterized in that the off-gas channel comprises at least one cleaning nozzle adapted to spray pressurized fluid to the inner surface of the off-gas channel.2. The off-gas channel according to claim 1 , characterized in that the gas cleaning apparatus is a venturi scrubber comprising an upright ejector venturi tube having an upper end claim 1 , and that the second end of the off-gas channel is connected to the upper end of the venturi tube.3. The off-gas channel according to claim 1 , characterized in that the off-gas channel is a gooseneck channel comprising claim 1 , in the direction of the off-gas flow claim 1 , a substantially upright first end portion the lower first end of which is connected to the smelting furnace claim 1 , a bend portion claim 1 , an inclined portion and a second end portion having a roof.4. The off-gas channel according to claim 3 , characterized in that the off-gas channel comprises a first cleaning nozzle claim 3 , which is connected at the wall of the bend portion and adapted to spray pressurized liquid onto the inner surface of the inclined portion.5. The off-gas channel according to claim 3 , characterized in that the off-gas channel comprises a second cleaning nozzle which is connected at the roof of the second end portion and adapted to spray ...

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Номер записи: 67
03-03-2022 дата публикации

Systems, devices, and methods for purifying atmosphere in a vacuum furnace

Номер: US20220065533A1
Автор: Michael Andrew Gibson, Nathan Woodard, Shashank Holenarasipura Raghu
Принадлежит: Desktop Metal Inc

The present disclosure includes a furnace for heating and/or sintering one or more three-dimensional printed metal parts. The furnace includes a furnace chamber, insulation within the furnace chamber, a retort within the furnace chamber, and one or more getters containing getter material. The retort is configured to receive the one or more three-dimensional printed metal parts.

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Номер записи: 68
03-03-2022 дата публикации

FURNACE FOR PRODUCING SECONDARY BATTERY CATHODE MATERIAL AND METHOD FOR FIRING SECONDARY BATTERY CATHODE MATERIAL

Номер: US20220065534A1
Автор: Hwang Soon Cheol, Jung Keeyoung, Kim Yeong Woo, PARK Yoon Cheol, Park Young Min, Yang Choongmo
Принадлежит:

A furnace for producing a secondary battery cathode material according to an exemplary embodiment of the present invention includes; a chamber of which the internal space is heated by a heater; a conveyer installed in the chamber and conveying a sagger containing raw material power of a cathode material of a secondary battery in one direction; and a gas supply nozzle and an exhaust port installed in the chamber.

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Номер записи: 69
25-02-2016 дата публикации

Furnace Assembly

Номер: US20160052048A1
Автор: Selmi Donald Joseph
Принадлежит:

A furnace assembly for dewaxing investment casting molds includes a housing having a top and a bottom and sides and extends along an axis to define a cavity. A plurality of tiles are supported in a spaced relationship with the bottom of the housing and define a pair of lower chambers for directing the wax vapors out of the cavity. A plurality of trays having apertures are supported by the tiles for moving molds through the housing. Chimneys connect to the lower chambers and a passageway is defined by the tiles for evacuating the wax and wax vapors from the cavity to the lower chambers and out through the chimneys. A pair of lower burners extends into the lower chambers for igniting wax vapors in said lower chambers. The heat from the lower chambers radiantly heats up portions of the furnace assembly that are disposed above the lower chambers. 1. A furnace comprising:an outer housing defining an inner cavity and wherein said cavity is divided into an upper chamber and a lower chamber, and wherein said outer housing includes a door at a first end;a chimney having an opening substantially aligned with said lower chamber;at least one burner extending into said lower chamber;at least one burner extending into said upper chamber; anda passageway located proximate to said first end extends between said lower chamber and said upper chamber.2. The furnace of further including a second end with an opening opposite said first end claim 1 , and where said chimney is located between said first and second ends.3. The furnace of wherein said lower chamber includes a divider extending along the majority of the length of said lower chamber between said first end and said chimney claim 2 , and wherein said divider divides said lower chamber into two longitudinally extending chambers.4. The furnace of wherein said at least one burner extending into said lower chamber includes a first lower burner aligned with one of said two longitudinally extending chambers and a second lower burner ...

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Номер записи: 70
14-02-2019 дата публикации

Plant for production of cement with reduced emission of pollutant gasses

Номер: US20190047911A1
Автор: Schuermann Heiko
Принадлежит:

A plant for production of cement clinker from raw meal, having a calciner for deacidification of the raw meal and a rotary furnace for sintering the deacidified raw meal to give cement clinker. The deacidified raw meal flows through a cyclone preheating stage into the rotary furnace. A reactor is provided upstream of the calciner on the flow path of the rotary furnace offgas to the calciner, to which an inlet for the rotary furnace offgas leads. A corresponding method of operating such a plant wherein fuel is added to the reactor in a superstoichiometric amount in relation to the residence time of the offgases in the reactor, such that carbon dioxide present in the offgases is reduced to carbon monoxide. At least one input air conduit for supplying input air, preferably coming from a tertiary air conduit, is provided at at least one point in the reactor. 111-. (canceled)12. A plant for the production of cement clinker from raw meal comprising , seen in the direction of material flow:at least one calciner for deacidification of the raw meal, andat least one rotary furnace for sintering of the deacidified raw meal into cement clinker,wherein the deacidified raw meal, after passing through the calciner, flows through a cyclone preheating stage into the rotary furnace,wherein a reactor installed upstream of the calciner on the flow path of the offgas of the rotary furnace to the calciner is provided, to which an inlet for the offgas of the rotary furnace leads, andwherein at least one inlet air line for the supply of fresh air is provided at at least one site in the reactor.13. The plant as claimed in claim 12 , wherein the fresh air comes from a tertiary air line that feeds recuperation air from a clinker cooler installed downstream of the rotary furnace in the direction of material flow back into the plant.14. The plant as claimed in claim 12 , wherein a control device is provided that regulates the fresh air supplied to the reactor based on at least one of the ...

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Номер записи: 71
08-05-2014 дата публикации

Energy Efficient Furnace with Coaxial Segmented Center Hearth and Multiple Combustion Stages with Regenerative Heat Return

Номер: US20140127636A1
Автор: Li Hengjie
Принадлежит: HENG KAI DEVELOPMENT LIMITED

Disclosed in the present invention are a combustion furnace with coaxial staged hearth and heating method thereof, in which the combustion furnace comprises a metal furnace body () whose internal part is provided with a furnace chamber. The furnace chamber is divided into two sections at the middle by fire resistant material to form a left and a right independent combustion chambers (). Two independent combustion chambers () are respectively connected with the ends of flue gas chambers (), while the other ends of the flue gas chambers () are respectively connected with a burner (). The peripherals of two independent combustion chambers () are respectively provided with a flue gas heat radiation pipe (). A middle flue gas chamber () is set in the middle position of the furnace chamber. Two ends of the flue gas heat radiation pipe () are respectively connected with the flue gas chamber () and the middle flue gas chamber (). Two independent combustion chambers () are communicated with each other through the flue gas chamber (), the flue gas heat radiation pipe () and the middle flue gas chamber (), and combust alternately. A suspension device including a portal frame () is provided for suspending the metal furnace body () horizontally or obliquely. The metal furnace body () is suspended on the portal frame () at a suspending point (). A walking mechanism () and a feeding mechanism () are also set on the portal frame (). 1. An energy efficient furnace with coaxial segmented center hearth and multiple combustion stages with regenerative heat return wherein comprising:a metal furnace body whose inside is provided with a furnace chamber; the furnace chamber is divided into two sections at the middle by fire resistant material to form a left and a right independent combustion chambers; two independent combustion chambers are respectively connected with the ends of flue gas chambers, while the other ends of the flue gas chambers are respectively connected with a burner; the ...

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Номер записи: 72
25-02-2016 дата публикации

COUPLING AND ROTOR SHAFT FOR MOLTEN METAL DEVICES

Номер: US20160053814A1
Автор: Cooper Paul V.
Принадлежит:

A coupling has an opening and a protrusion extending downward from the opening. The protrusion has threads that are preferably positioned outside of the opening. A rotor shaft that connects to the coupling has an internal bore with threads that receives and retains the protrusion, such as by a threaded connection between the two, so the protrusion applies driving force to the shaft. 1. A coupling for use in processing molten metal , the coupling comprising:a) a collar including an opening for receiving an end of a rotor shaft, the collar having an opening with a top and a bottom; andb) an extension protruding through the opening, the extension being threaded and configured to be retained in a bore of the rotor shaft.2. The coupling of wherein the collar and the extension are comprised of steel.3. The coupling of wherein the opening in the collar is chamfered so that it has a smaller diameter at the top than at the bottom.4. The coupling of wherein there are no threads in the opening.5. The coupling of wherein the extension protrudes through the center of the opening.6. The coupling of wherein the extension protrudes 2″ or more from the bottom of the opening.7. The coupling of wherein the extension protrudes 3″ or more from the bottom of the opening.8. The coupling of wherein the extension has a first portion inside of the cavity and a second portion outside of the cavity claim 1 , the first portion not having any threads.9. The coupling of wherein the threads are square claim 1 , 1″ ACME threads.10. The coupling of wherein the extension has an exterior end and the exterior end is chamfered.11. The coupling of wherein the exterior end is ¼″ long and has a 45° chamfered.12. The coupling of wherein the second portion of the extension has a length claim 1 , an upper portion and a lower portion claim 1 , the lower portion comprising at least ⅓ of the length and having no threads.13. The coupling of wherein the distance from the top of the opening to the bottom of the ...

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Номер записи: 73
13-02-2020 дата публикации

STRAIGHT FIN FOR DEVICE FOR RECOVERING WASTE HEAT OF RAW COKE OVEN GAS IN ASCENSION PIPE OF COKE OVEN, AND HEAT RECOVERING DEVICE

Номер: US20200048557A1
Автор: DONG Renhe, LI Juxiang, Liu Xiaoping, LU Jianning, YANG Guilan, Zheng Xuan
Принадлежит: NANJING HUADIAN ENERGY-SAVING & ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD

A straight fin for a device for recovering the waste heat of raw coke oven gas in the ascension pipe of the coke oven includes the straight fin body and a group of V-shaped notches disposed on the straight fin body. The depth h of the V-shaped notches is less than the width H of the straight fin body. The distances between the adjacent V-shaped notches increase from bottom to top in the longitudinal direction of the straight fin body. The present invention further provides a heat recovering device and a power generation device both including the straight fins. Moreover, the width, the angle, and the distances in the longitudinal direction of the V-shaped notches at the top of the straight fin are determined according to the temperature field distribution during use of the device. 1. A straight fin for a device for recovering waste heat of raw coke oven gas in an ascension pipe of a coke oven , comprising: a straight fin body and a plurality of V-shaped notches disposed on the straight fin body; a depth of the plurality of V-shaped notches is less than a width of the straight fin body; and distances between the V-shaped notches adjacent to each other increase from bottom to top in a longitudinal direction of the straight fin body.2. The straight fin for the device for recovering the waste heat of the raw coke oven gas in the ascension pipe of the coke oven according to claim 1 , wherein the plurality of V-shaped notches are sequentially numbered Q1 to Qn−1 from bottom to top in the longitudinal direction of the straight fin body; a distance from Q1 to a bottom of the straight fin body is L1 claim 1 , the distances between the V-shaped notches adjacent to each other from bottom to top are L2 to Ln−1 claim 1 , and a distance from Qn−1 to a top of the straight fin body is Ln; and values of L1 to Ln increase.3. The straight fin for the device for recovering the waste heat of the raw coke oven gas in the ascension pipe of the coke oven according to claim 2 , wherein L1 to ...

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Номер записи: 74
25-02-2021 дата публикации

METHOD OF RECYCLING HEAT

Номер: US20210055053A1
Автор: Conrad Wayne Ernest
Принадлежит:

This disclosure provides a method of recycling heat during operation of a plant in which equipment for processing at least two different materials is co-located. The method comprises a first process for processing a first material and a second process for processing a second material. The second material has a melting point that is less than a melting point of the first material. During the first process, the first material is subjected to a first melting process and then subjected to a first cooling process that includes solidification of the first material. During the second process, the second material is subjected to a second melting process and then subjected to a second cooling process that includes solidification of the second material. The method comprises recovering heat from the first cooling process and using at least some of the heat as a heat source for the second melting process. 1. A method of recycling heat during operation of a plant in which equipment for processing at least two different materials is co-located , the method comprising:(a) a first process which processes a first material having a first melting point, wherein, during the first process, the first material is subjected to a first melting process and then subjected to a first cooling process that includes solidification of the first material;(b) a second process which processes a second material having a second melting point, wherein the second melting point is less than the first melting point and, during the second process, the second material is subjected to a second melting process and then subjected to a second cooling process that includes solidification of the second material; and,(c) recovering heat from the first cooling process and using at least some of the heat as a heat source for the second melting process.2. The method of wherein the heat recovered from the first cooling process comprises heat recovered during the solidification of the first material.3. The method of ...

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Номер записи: 75
25-02-2021 дата публикации

System and method for waste heat recovery in steel production facilities

Номер: US20210055054A1
Автор: Daniel Eriksson, Rakshith SACHITANAND
Принадлежит: CLIMEON AB

A system for recovery of thermal energy from a first closed cooling loop for cooling skid pipes is provided. The first closed cooling loop comprising a circulation fluid receiving thermal energy from said skid pipes, and a cooling source. The system being capable of measuring the temperature in said first closed cooling loop converting thermal energy into electricity. The system further including a flow control system arranged to control input of thermal energy into a power conversion module, wherein said flow control system is arranged to cut off said cooling source from said first closed cooling loop when the measured temperature is below a first predetermined threshold temperature (TsTART), such that said circulation fluid is directed to a hot side of said power conversion module only, to provide a thermal energy input into said power conversion module. No new matter is added.

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Номер записи: 76
23-02-2017 дата публикации

DROSS MANAGEMENT SYSTEM AND METHOD

Номер: US20170051381A1
Автор: Herbert James
Принадлежит:

A dross processing assembly includes a stirring station at which dross in a first dross recovery vessel is stirred and a pressing station at which previously stirred dross in a second dross recovery vessel is pressed simultaneously with the stirring of the dross in the first dross recovery vessel. The stirring station and the pressing station may be commonly housed in an enclosure. A conveyor system may advance dross recovery vessels through the dross processing assembly for continuous dross processing. 1. A dross processing assembly , comprising:a stirring station at which dross in a first dross pan is stirred; anda pressing station at which dross in a second dross pan that was previously stirred by the stirring station is pressed simultaneously with the stirring of the dross in the first dross pan.2. The dross processing assembly of claim 1 , further comprising an enclosure in which the stirring station and the pressing station are commonly housed.3. The dross pressing assembly of claim 2 , wherein fumes and dust from the stirring station and the pressing station are exhausted from the enclosure together.4. The dross processing assembly of claim 1 , further comprising a conveyor system configured claim 1 , following a stirring cycle of the dross in the first dross pan and a pressing cycle of the dross in the second dross pan claim 1 , to advance the second dross pan to a retrieval area claim 1 , advance the first dross pan from the stirring station to the pressing station claim 1 , and advance a third dross pan from a staging area to the stirring station.5. The dross processing assembly of claim 4 , further comprising a first door between the staging area and the stirring station and a second door between the pressing station and the retrieval area claim 4 , wherein the doors are operated in coordination with the conveyor system.6. The dross processing assembly of claim 1 , further comprising a conveyor system configured to move dross pans from the stirring ...

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Номер записи: 77
23-02-2017 дата публикации

HIGH ORGANIC CONCURRENT DECOATING KILN

Номер: US20170051914A1
Автор: RAUCH EDWIN L.
Принадлежит: Novelis Inc.

A high organic concurrent decoating kiln includes a low-oxygen zone and a high-oxygen zone. The disclosed kiln allows a gas low in free oxygen to be used in the initial stages of decoating, while a gas higher in free oxygen can be used in the final stages. The total amount of free oxygen used throughout the kiln, in particular at the upstream portion of the kiln, is kept low. Exhaust gas can be recirculated for use in a burner-fired chamber that provides the initial low-oxygen gas to the kiln. 1. A decoating kiln , comprising: an entry side for accepting metal scrap and a low-oxygen hot gas; and', 'an exit side for outputting decoated scrap and accepting a high-oxygen hot gas;, 'a rotating drum comprisingan exhaust tube positioned within the rotating drum for exhausting a mixture of exhaust gas and entrained scrap;a cyclone coupled to the exhaust tube for separating the entrained scrap from the exhaust gas; andan exit port coupled to the cyclone for exhausting the exhaust gas.2. The decoating kiln of claim 1 , further comprising:a multicyclone coupled to the exit port for separating particles from the exhaust gas; anda burner-fired chamber coupled to the multicyclone for accepting the exhaust gas and generating the low-oxygen hot gas.3. The decoating kiln of claim 1 , further comprising:a low-oxygen hot gas entry duct coupled to the decoating kiln proximate the entry side; anda high-oxygen hot gas entry duct coupled to the decoating kiln proximate the exit side.4. The decoating kiln of claim 2 , further comprising:a low-oxygen hot gas entry duct coupled to the decoating kiln proximate the entry side; anda high-oxygen hot gas entry duct coupled to the decoating kiln proximate the exit side.5. The decoating kiln of claim 4 , wherein:the exhaust tube is configured to remove exhaust gas from the decoating kiln; andthe burner-fired chamber uses at least a portion of the exhaust gas to generate a low-oxygen hot gas provided to the low-oxygen hot gas entry duct.6. The ...

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Номер записи: 78
15-05-2014 дата публикации

CARBON DIOXIDE REDUCTION IN STEELWORKS

Номер: US20140130639A1
Автор: Baldauf Manfred, Schmid Gunter
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A method reduces carbon dioxide resulting from a steel production process. The carbon dioxide is reacted with an electropositive metal in combustion to produce carbon monoxide. The resultant carbon monoxide is fed back into the steel production process. In this method, the carbon monoxide can be used in a direct reduction method as a reduction gas or can be fed to a blast furnace process. The reacted metal can also be recovered by electrochemical conversion from its oxides or salts. In particular, a form of regenerative energy can be used to recycle the electropositive metal. 115-. (canceled)16. A method for reducing carbon dioxide , comprising:receiving carbon dioxide which is formed in a steel production process;combusting the carbon dioxide with an electropositive metal to convert the carbon dioxide and produce a first combustion product; andfeeding the first combustion product back into the steel production process.17. The method as claimed in claim 16 , whereincombusting the carbon dioxide produces thermal energy, andthe thermal energy is converted into electric energy and/or is supplied to the steel production process.18. The method as claimed in claim 16 , wherein the electropositive metal is a metal selected from the group consisting of metals the first main group of the periodic table claim 16 , metals of the second main group of the periodic table and metals with a normal potential which is less than zero volts.19. The method as claimed in claim 16 , wherein the electropositive metal is lithium.20. The method as claimed in claim 16 , whereinthe first combustion product comprises carbon monoxide, andthe carbon monoxide is fed back into the steel production process and used for reducing iron oxide.21. The method as claimed in claim 20 , wherein the first combustion product is supplied to a blast furnace of the steel production process and used to replace a portion of a fuel used in the blast furnace.22. The method as claimed in claim 21 , wherein the fuel is ...

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Номер записи: 79
03-03-2016 дата публикации

Method For Removing Sulphur Dioxide From Gas Streams, Using Titanium Dioxide As Catalyst

Номер: US20160059187A1
Автор: Cross Peter Frank
Принадлежит:

The present invention relates to a method for removing sulphur dioxide from gaseous effluent, wherein a mixture of gaseous outlet gasses or gaseous effluent includes sulphur dioxide and carbon monoxide, and wherein, to perform a catalytic reduction, a catalyst is used to catalyse a reaction between carbon monoxide and sulphur dioxide to produce carbon dioxide and sulphur. 1. The use of a Catalyst comprising at least 90% by weight of titanium dioxide to catalyse a reaction between carbon monoxide and sulphur dioxide to produce carbon dioxide and sulphur to remove sulphur dioxide from gaseous effluent.2. The use according to wherein the catalyst simultaneously catalyses a reaction between sulphur dioxide and carbon monoxide to produce carbon dioxide and sulphur and a reaction between hydrogen sulphide and sulphur dioxide to produce sulphur and water.3. The use according to wherein the catalyst comprises at least 95% by weight of titanium dioxide.435-. (canceled)36. The use according to wherein the catalyst consists essentially of titanium dioxide.37. The use according to wherein the catalysis occurs at a temperature from about 350° C. to about 450° C.38. The use according to wherein catalysis is performed before a subsequent catalytic stage wherein said subsequent catalytic stage is a first catalytic stage from the Claus process.39. The use according to wherein the gaseous effluent comprises hydrogen sulphide and the catalyst simultaneously performs the Claus reaction claim 1 , preferably claim 1 , wherein the gaseous effluent further comprises hydrogen and wherein substantially none of the hydrogen is oxidised.40. A method for removing sulphur dioxide from gaseous effluent by performing a catalytic reduction:wherein the gaseous effluent includes sulphur dioxide and carbon monoxide, andwherein the catalytic reduction is performed using titanium dioxide to catalyse a reaction between carbon monoxide and sulphur dioxide to produce carbon dioxide and sulphur such that a ...

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Номер записи: 80
21-02-2019 дата публикации

FURNACE

Номер: US20190056177A1
Автор: KAJITANI Tsuyoshi, YOSHIGUCHI Kazumi
Принадлежит:

A furnace as described in this invention comprises a temperature regulating portion to assist in melting a non-ferrous material, such as an aluminium, and to reserve said material for the subsequent casting or injection molding procedure. The furnace provides a mean to eliminate an oxide, such as iron oxide, which generally floats on the top layer of a molten material inside a melting portion and a heating portion by preventing the flow of said oxide into the temperature regulating portion. A sensor or any detector that can detect the level of the molten material is utilized to measure the surface level of said molten material. A temperature regulating burner, which is a flat flame type, is utilized on the ceiling of the temperature regulating portion in order to prevent any oxidation reaction to occur as well as to reduce the concentration of oxygen inside the portion. 1. A furnace wherein the furnace comprises the following components:{'b': 3', '3', '16', '17, 'a temperature regulating portion () for storing a molten material wherein the temperature regulating portion () comprises a lid () with a material insert channel ();'}{'b': 5', '3, 'a heating portion () below the temperature regulating portion ();'}{'b': 6', '5', '6', '3', '4, 'a melting portion () below the heating portion () wherein a molten material from the melting portion () shall be sent to the temperature regulating portion () and be discharged from an exit channel ();'}{'b': 15', '15', '9, 'an inclined hearth () wherein the upper part of the inclined hearth () comprises a burner ();'}{'b': 2', '3', '1', '6', '5', '7', '15, 'i': 'a', 'a connecting passage () of the temperature regulating portion () which characterizes by an inclined or curved bottom and which receives the molten material () from the melting portion () which is connected to the lower part of the heating portion () and a molten material heating portion () by the inclined hearth (); and'}{'b': 10', '2', '10', '13', '1', '7', '1', '3, 'i ...

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Номер записи: 81
02-03-2017 дата публикации

Thermochemical regeneration with oxidant preheating

Номер: US20170059250A1
Автор: Hisashi Kobayashi
Принадлежит: Praxair Technology Inc

Employing furnace combustion gases for both thermochemical regeneration and heating of regenerators to preheat oxidant for the furnace provides synergistic efficiencies and other advantages.

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Номер записи: 82
22-05-2014 дата публикации

DEVICE FOR THE CLOSED-LOOP CONTROL OF PROCESS GASES IN A PLANT FOR PRODUCING DIRECTLY REDUCED METAL ORES

Номер: US20140138884A1
Автор: Millner Robert, Plaul Jan-Friedemann, REIN Norbert, Rosenfellner Gerald
Принадлежит:

A device for closed-loop control of process gases () in a plant () for producing directly reduced metal ores includes at least one reduction unit (), an appliance upstream of the reduction unit () for separating gas mixtures (), a gas purification appliance () connected downstream of the reduction unit () for rate control of process gases (). Process gases () are obtained by recycling from the production process itself and from a plant for pig iron generation () via a supply conduit (). An open-loop pressure control appliance () upstream of a junction of the supply conduit () into a return conduit () for the process gases () such that a pressure level for the appliance for separating gas mixtures () is kept constant and the process gases () are controlled in a closed-loop manner in a plant for producing directly reduced metal ores (). 1. A device for closed-loop control of process gases in a plant for producing directly reduced metal ores , the device having:at least one reduction unit;an appliance configured for separating gas mixtures and an assigned compressor appliance, both of the gas mixture separating appliance and the compressor appliance being connected upstream of the reduction unit with respect to the flow of gases;a gas purification appliance connected downstream of the reduction unit with respect to the flow of gases; the gas purification appliance is configured for rate control of the process gases;a supply conduit from a plant for pig iron production for supplying at least part of the process gases from the plant; a return conduit for process gases from the reduction unit;a junction of the supply conduit into the return conduit for the process gases from the reduction unit; andan open-loop pressure control appliance mounted ahead of the junction such that a pressure level for the appliance for separating gas mixtures and for the assigned compressor appliance is held constant.2. The device as claimed in claim 1 , wherein the gas purification appliance ...

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Номер записи: 83
12-03-2015 дата публикации

BLAST FURNACE WITH TOP-GAS RECYCLE

Номер: US20150068364A1
Автор: BECERRA-NOVOA Jorge-Octavio, Duarte-Escareno Pablo-Enrique, Garza-Davila José-Carlos
Принадлежит: HYL TECHNOLOGIES, S.A. DE C.V.

A blast furnace where coke is combusted with oxygen, instead of air, and where a top gas comprising CO, CO, H, and without excess nitrogen is withdrawn from the upper part of the blast furnace, cleaned of dust, the H/CO volume ratio adjusted to between 1.5 to 4.0 in a water shift reactor, water and COare removed (increasing its reduction potential), heated to a temperature above 850° C. and fed back to the blast furnace above where iron starts melting (thereby increasing the amount of metallic iron reaching the dead-man zone and decreasing the amount of coke used for reduction). Also carbon deposit problems caused by heating the CO-containing recycled gas are minimized by on-line cleaning of the heater tubes with steam without significantly affecting the reduction potential of the recycled reducing gas. 1. Method of producing molten iron in a blast furnace to which iron ore , metallurgical coke and fluxes are charged at its upper part and molten iron and slag are tapped from its lower part , said blast furnace having a plurality of tuyeres in its lower part for introducing an oxygen-containing gas for generating heat and reducing gases by combustion of the coke within said furnace characterized by:feeding oxygen instead of air through the tuyeres of said blast furnace;{'sub': 2', '2, 'withdrawing a top gas stream comprising CO, COand H;'}cleaning the top gas stream of dust and{'sub': '2', 'adjusting the volume ratio of H/CO to the range between 1.5 to 4 by reaction with water;'}cooling said top gas stream for removing water therefrom;{'sub': 2', '2, 'removing COfrom a portion of said cooled top gas stream forming a CO-lean reducing gas stream,'}heating said reducing gas stream to a temperature above 850° C., andfeeding said hot gas stream to said blast furnace contributing to the reduction of said iron ore to metallic iron.2. Method of producing molten iron according to claim 1 , further characterized by reacting said cleaned top gas in a catalytic reactor with ...

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Номер записи: 84
17-03-2022 дата публикации

PROCESS FOR PRODUCING POTASSIUM SULPHATE

Номер: US20220081308A1
Автор: LANDUYT Peter
Принадлежит:

A process for the production of potassium sulphate by conversion of potassium chloride and sulphuric acid using a muffle furnace, said furnace comprising a reaction chamber and a combustion chamber, wherein in the reaction chamber potassium chloride (KCI) and potassium hydrogen sulfate (KHSO) are reacted to form potassium sulphate while supplying heat to the reaction chamber from the combustion chamber, wherein the combustion chamber has at least a pair of regenerative burners and wherein the process comprises the steps of alternatingly causing one of the regenerative burners to perform a combustion operation in the combustion chamber to heat the reaction chamber and another of the regenerative burners to perform a heat-regenerating operation in a regenerator, wherein the pressure in the combustion chamber is kept at a pressure of between 0.2 and 3 mbarg. 1. A process for the production of potassium sulphate by conversion of potassium chloride and sulphuric acid using a muffle furnace , said furnace comprising a reaction chamber and a combustion chamber , wherein in the reaction chamber potassium chloride (KCl) and potassium hydrogen sulfate (KHSO) are reacted to form potassium sulphate while supplying heat to the reaction chamber from the combustion chamber , wherein the combustion chamber has at least a pair of regenerative burners and wherein the process comprises the steps of alternatingly causing one of the regenerative burners to perform a combustion operation in the combustion chamber to heat the reaction chamber and another one of the regenerative burners to perform a heat-regenerating operation in a regenerator ,wherein heat-regenerating means that heat from the combustion chamber is intermittently stored in a storage medium of a regenerator,wherein the pressure in the combustion chamber is kept at a pressure of between 0.2 and 3 mbarg.2. Process according to claim 1 , wherein the peak temperature in the combustion chamber is between 900° C. and 1300° C.3. ...

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Номер записи: 85
28-02-2019 дата публикации

Thermoplastic kettle auxiliary single-pass oil bath heat exchanger system

Номер: US20190063013A1
Автор: James P. Shea
Принадлежит: James P. Shea

An auxiliary single-pass tube bundle heat exchanger for improving the melting efficiency of melter kettles used to melt thermoplastic pavement marking materials. The auxiliary single-pass tube bundle heat exchanger includes a heat transfer tube bundle having a plurality of heat transfer tubes in which the flow of molten thermoplastic material reverses directions at least once. Hot heat transfer oils flows around the plurality of heat transfer tubes. Vertical material transfer tubes connect between the bottom of the melter kettle and the top of the auxiliary single-pass tube bundle heat exchanger and between the bottom of the auxiliary single-pass tube bundle heat exchanger and the top of the melter kettle. Augers within the vertical material transfer tubes driven by reversible drive motors cause molten thermoplastic material to flow from the bottom of the melter kettle, through the auxiliary single-pass tube bundle heat exchanger, and into the top of the melter kettle.

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Номер записи: 86
09-03-2017 дата публикации

Cement Kiln Exhaust Gas Pollution Reduction

Номер: US20170065933A1
Автор: "DAmico Peter", Lesniak Thomas, Poling Christopher
Принадлежит: MERCUTEK LLC

A method for reducing pollution in a cement kiln environment and a system for treating cement kiln exhaust gas are provided. The method includes the steps of: treating a cement kiln exhaust gas stream with a treating fluid, such as a water soluble alkaline-earth metal sulfide. In one application, the treating fluid is injected by spraying droplets into the cement kiln exhaust gas stream. A system for treating cement kiln exhaust gas includes a reagent containing a water soluble alkaline-earth metal sulfide in water, and a nozzle to spray the reagent into the cement kiln exhaust gas stream. 1. A method for reducing pollution in a cement kiln environment comprising:treating a cement kiln exhaust gas stream with a treating fluid comprising a reagent containing a water soluble alkaline-earth metal sulfide by injecting said treating fluid into said cement kiln exhaust gas stream prior to a particulate collection system.2. The method of claim 1 , wherein said injecting further comprises spraying droplets of said treating fluid into said cement kiln exhaust gas stream.3. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into said cement kiln exhaust gas stream at a point where said cement kiln exhaust gas stream has a temperature of about 350 degrees Fahrenheit.4. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into said cement kiln exhaust gas stream subsequent to a first particulate collection system and prior to a second particulate collection system.5. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into a gas resonance chamber carrying said cement kiln exhaust gas stream.6. The method of claim 1 , wherein said treating further comprises injecting said treating fluid into a duct carrying said cement kiln exhaust gas stream.7. The method of claim 2 , wherein said spraying said droplets further includes spraying said droplets having a ...

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Номер записи: 87
12-03-2015 дата публикации

Method for Heating an Industrial Furnace and a Heating Apparatus for Carrying Out Said Method

Номер: US20150072297A1
Автор: Angenendt Marc, Sarres Rolf
Принадлежит:

The invention relates to a method for heating an industrial furnace, wherein, apart from heating gas, a combustible process gas is also fed to a burner arrangement () of the industrial furnace for heating an interior space in the course of a heat treatment cycle. In order to optimize the use of the combustible process gas for the heating of the industrial furnace, the heat treatment cycle is split up into a plurality of process phases, wherein the supply of the process gas to the burner arrangement () is regulated depending on the process phase. Furthermore, the invention relates to a heating device () for an industrial furnace, as well as an industrial furnace that includes the heating device. 19. A method for heating an industrial heat treating furnace comprising the steps of supplying a combustible process gas to a burner arrangement () of the industrial heat treating furnace and burning the combustible process gas to produce heating of an interior space of the industrial heat treating furnace during a heat treatment cycle , wherein the heat treatment cycle is divided into a plurality of process phases and the step of supplying the combustible process gas is regulated according to conditions in the industrial heat treating furnace during each of the process phases.2910119. The method according to claim 1 , wherein during the step of supplying the process gas to the burner arrangement () claim 1 , at least one burner ( claim 1 , ) of the burner arrangement () is supplied with the process gas.3910119. The method according to claim 2 , wherein during the step of supplying the process gas to the burner arrangement () claim 2 , a plurality of burners ( claim 2 , ) of the burner arrangement () are supplied with the process gas individually one after the other or in groups during a heat treatment cycle.4910119. The method according to claim 3 , wherein during the step of supplying the process gas to the burner arrangement () claim 3 , the plurality of burners ( claim 3 ...

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Номер записи: 88
11-03-2021 дата публикации

Preheating Combustion Air With Gasification Furnace Flue Gas

Номер: US20210071864A1
Автор: Abbasi Yasir H., Al Robai Mohammed S., Al-Otaibi Dhawi A.
Принадлежит:

To preheat combustion air with gasification furnace flue gas, combustion air is flowed towards an inlet of a gasification furnace. The combustion air is heated using flue gas emitted from the gasification furnace. The flue gas is generated within the gasification furnace responsive to a gasification process. The heated combustion air is flowed into the inlet of the gasification furnace. The gasification process is implemented within the gasification furnace using the heated combustion air 1. A method comprising:flowing combustion air towards an inlet of a gasification furnace;heating the combustion air using flue gas emitted from the gasification furnace, the flue gas generated within the gasification furnace responsive to a gasification process;flowing the heated combustion air into the inlet of the gasification furnace; andimplementing the gasification process within the gasification furnace using the heated combustion air.2. The method of claim 1 , wherein heating the combustion air using the flue gas comprises flowing the combustion air and the flue gas through a heat exchanger claim 1 , wherein heat of the flue gas is transferred to the combustion air within the heat exchanger.3. The method of claim 2 , wherein the heat exchanger is a shell and tube heat exchanger claim 2 , wherein the method further comprises:flowing the flue gas through the shell of the shell and tube heat exchanger; andflowing the combustion air through the tube of the shell and tube heat exchanger.4. The method of claim 2 , wherein heating the combustion air using the flue gas comprises flowing the combustion air through the heat exchanger in a counterclockwise direction.5. The method of claim 1 , wherein claim 1 , prior to heating the combustion air using the flue gas claim 1 , a temperature of the combustion air is substantially 20° C. claim 1 , and wherein claim 1 , after heating the combustion air using the flue gas claim 1 , the temperature of the combustion air is substantially 100° C ...

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Номер записи: 89
07-03-2019 дата публикации

SEMICONDUCTOR MANUFACTURING APPARATUS

Номер: US20190074200A1
Автор: FUKUSUMI Takanori, MIYAMOTO Yukinobu
Принадлежит: Toshiba Memory Corporation

According to an embodiment, a semiconductor manufacturing apparatus includes a holder configured to hold a processing object, a heater provided at the holder and configured to heat the processing object, a first exhaust port provided above the holder and facing the holder, and an exhaust duct. The exhaust duct is provided on an outer side surface of the first exhaust port and includes an extension and contraction function. 1. A semiconductor manufacturing apparatus comprising:a holder configured to hold a processing object;a heater provided at the holder and configured to heat the processing object;a first exhaust port provided above the holder and facing the holder; andan exhaust duct provided n an outer side surface of the first exhaust port and including an extension and contraction function.2. The semiconductor manufacturing apparatus according to claim 1 , further comprising a first exhaust unit connected to the first exhaust port claim 1 , whereinunder a state where the processing object is not placed on the holder, the exhaust duct is extended toward the holder, and gas is exhausted from the first exhaust port by the first exhaust unit.3. The semiconductor manufacturing apparatus according to claim 1 , wherein the exhaust duct includes a telescopic structure or bellows structure.4. The semiconductor manufacturing apparatus according to claim 2 , further comprising:a second exhaust port provided near a side surface of the holder; anda second exhaust unit connected to the second exhaust port, whereinunder a state where the processing object is placed on the holder, the exhaust duct is contracted, and gas is exhausted from the first exhaust port and the second exhaust port by the first exhaust unit and the second exhaust unit.5. The semiconductor manufacturing apparatus according claim 2 , further comprising a position sensor provided on a distal end of the exhaust duct on a side closer to the holder claim 2 , and configured to measure height of the distal end ...

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Номер записи: 90
24-03-2016 дата публикации

BLAST FURNACE AND METHOD FOR OPERATING A BLAST FURNACE

Номер: US20160083810A1
Автор: Kuhl Olaf
Принадлежит:

The present invention is directed to a blast furnace and a method for operating a blast furnace which are able to reduce the COproduction and reduce the amount of applied additives and heating material when compared to presently known metallurgical plants. This problem is solved by a process for metal production of metal ores comprising the following steps: reducing a metal ore, particularly a metal oxide; producing furnace gas containing COin a blast furnace shaft; discharging said furnace gas from the blast furnace shaft; directing at least a portion of the furnace gas directly or indirectly into a COconverter and reducing the COcontained in the furnace gas into CO in the COconverter, directing at least a portion of the CO from the COconverter into the blast furnace shaft. Besides solving the above mentioned problem, the method also produces CO as a gaseous reduction agent which may be easily introduced into the blast furnace shaft. 1. A method for processing metal ore comprising the following steps:reducing a metal ore;{'sub': '2', 'b': '2', 'producing furnace gas containing COin a blast furnace shaft ();'}{'b': '2', 'discharging said furnace gas from the blast furnace shaft ();'}{'sub': 2', '2', '2, 'b': 4', '4, 'directing at least a portion of the furnace gas directly or indirectly into a COconverter () and reducing the COcontained in the furnace gas to CO in the COconverter ();'}{'sub': '2', 'b': 4', '2, 'directing a first portion of the CO from the COconverter () into the blast furnace shaft ();'}{'sub': '2', 'b': '4', 'claim-text': an oxidation process in a fuel cell;', 'a combustion process in a gas engine', 'a combustion process in a gas turbine;', [{'br': None, 'sub': 2', '2', '5', '2, '6CO+3HO→CHOH+4CO;\u2003\u2003a)'}, {'br': None, 'sub': 2', '2', '2', '5', '2, '6H+2CO→CHOH+3HO;\u2003\u2003b)'}, {'br': None, 'sub': 2', '2', '5', '2, '2CO+4H→CHOH+HO; and\u2003\u2003c)'}], 'a biological conversion process in a bio converter carried out using microbes or ...

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Номер записи: 91
23-03-2017 дата публикации

INDUSTRIAL FURNACE FOR HEATING PRODUCTS SUCH AS STEEL PRODUCTS

Номер: US20170082364A1
Автор: Dubois Patrick, FERRAND Ludovic, Pinto de Sousa Eduardo
Принадлежит:

An industrial furnace for heating products such as steel products includes a thermally insulated enclosure, a plurality of burners arranged in the enclosure for heating products passing from one end of the enclosure to the other, the burners being distributed over a plurality of temperature-regulated heating areas, and a recovery system designed for recovering heat energy from recovery fumes, The recovery system includes a rotary regenerator associated with each heating area, each of the rotary regenerators being configured to receive a predetermined flow rate of recovery fumes via a first duct, receive a predetermined flow rate of supply air via a second duct, preheat the supply air in order to supply the burners of the associated heating area with a predetermined flow rate of preheated combustion air via a third duct, and discharge exhaust fumes via a fourth duct. 1: An industrial furnace for heating products such as steel products , the furnace comprising:a thermally-insulated enclosure;a plurality of burners arranged in the enclosure for heating products passing from one end of the enclosure to the other, the burners being distributed over a plurality of temperature-regulated heating areas; anda recovery system for recovering heat energy from recovery fumes by a first combustion performed by the burners in such a manner as to improve energy efficiency of the furnace, the recovery system including a rotary regenerator associated with each heating area, each of the rotary regenerators being configured to receive a predetermined flow rate of recovery fumes via a first duct, receive a predetermined flow rate of supply air via a second duct, preheat the supply air in order to supply the burners of the associated heating area with a predetermined flow rate of preheated combustion air via a third duct, and discharge exhaust fumes via a fourth duct.2: The industrial furnace according to claim 1 , wherein the predetermined flow rate of recovery fumes received by each ...

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Номер записи: 92
05-05-2022 дата публикации

MULTI-HALF PIPE HEAT EXCHANGE SYSTEM FOR ELECTRIC ARC, METALLURGICAL OR REFINING FURNACES AND SYSTEM THEREOF

Номер: US20220136770A1
Автор: Manasek Richard J.
Принадлежит:

A cooling assembly for cooling exhaust gases emitted from a steel-making furnace includes a plate configured to be coupled to the furnace. The plate has a first surface and an opposing second surface. The assembly includes a body having a defined length and a cross-sectional shape having a thickness defined between an outer surface and an inner surface thereof. The body includes a first mounting end and a second mounting end, where the first mounting end is mounted to the first surface at a first angle greater than 0°. The second mounting end is also mounted to the first surface at a second angle greater than 0°, and the second mounting end is spaced from the first mounting end. A conduit is defined between the inner surface and first surface for a cooling fluid to flow therethrough.

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Номер записи: 93
26-06-2014 дата публикации

Apparatus and method for the thermal treatment of lump or agglomerated material

Номер: US20140175714A1
Автор: Hartmut Koehler, Timotheus Schmedders
Принадлежит: OUTOTEC OYJ

An apparatus for the thermal treatment of lump or agglomerated material in a firing machine includes a travelling grate configured to convey the material through the firing machine. A firing chamber has a ceiling and side walls and is configured to generate temperatures required for the thermal treatment. The ceiling has a plurality of openings and the side walls have a plurality of burners that are directed obliquely upwards. A cooling zone is configured to pass cooling gases through the thermally treated material so as to heat the cooling gases. A recuperation tube is configured to recirculate the heated cooling gases to the firing chamber through the openings in the ceiling.

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Номер записи: 94
12-05-2022 дата публикации

ENHANCEMENT OF THERMOCHEMICAL REGENERATION OPERATION

Номер: US20220146202A1
Автор: Bell Robert L., Francis Arthur W., Kobayashi Hisashi, Wu Kuang-Tsai
Принадлежит:

A combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas is then passed to undergo endothermic reactions that produce syngas which is fed into a furnace together with a motive gas stream, wherein fuel is combusted with the motive gas stream to provide heat in alternate cycles. 1. A method of carrying out combustion in a furnace , comprising(A) combusting fuel in a furnace to produce gaseous combustion products; and '(1) (i) passing a portion of the gaseous combustion products into and through a cooled first regenerator to heat the first regenerator and cool said portion of the gaseous combustion products,', '(B) carrying out the following sequence of steps (1) through (4)(ii) passing at least part of said cooled portion of gaseous combustion products from said first regenerator, and gaseous fuel, into a heated second regenerator and, in the second regenerator, reacting the gaseous combustion products and the gaseous fuel in an endothermic reaction in the second regenerator to form syngas comprising hydrogen and CO,(iii) passing said syngas formed in the second regenerator at a velocity less than 50 feet per second into a first duct having an outlet that is connected to the interior of the furnace,(iv) injecting at least one stream of motive gas having a velocity of at least 100 feet per second from a first nozzle in the first duct into the syngas in the first duct upstream from the interior of the furnace, thereby entraining the syngas into the motive gas stream in the first duct and forming in the first duct a mixed stream comprising a mixture of the syngas and the motive gas and having a velocity greater than 50 feet per second, and '(2) (i) discontinuing the passage of gaseous fuel into the second regenerator, continuing to pass cooled gaseous combustion products into and through said second regenerator thereby removing fuel and syngas from the second regenerator and lowering the concentration of fuel and ...

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Номер записи: 95
28-03-2019 дата публикации

Waste Heat Recovery Boiler in Producing Glass Beads

Номер: US20190093878A1
Автор: HUANG Shang-yong
Принадлежит:

A waste heat recovery boiler in producing glass beads includes an equipment base arranged at the lower part of the waste heat recovery boiler. The upper part of the equipment base is connected with a cylindrical combustion production chamber, the lower part of the combustion production chamber is provided with a raw material inlet with single-layer or staggered layers. A finished product outlet is arranged at the lower end inside the combustion diffusion chamber, a membrane wall is arranged outside the combustion diffusion chamber, a steam-water lead-out straight tube system is symmetrically arranged at the upper end of the combustion diffusion chamber, a top annular water collecting tank is connected between the steam-water lead-out straight tube system and a steam-water lead-out tube system, and the steam-water lead-out tube system is connected with an upper drum. 1. A waste heat recovery boiler used in the process of producing glass beads comprising:an equipment base arranged at a lower part of the waste heat recovery boiler, whereinan upper part of the equipment base is connected with a cylindrical combustion production chamber;a lower part of the cylindrical combustion production chamber is provided with a raw material inlet with a single-layer or staggered layers;portholes are symmetrically arranged on both sides of a combustion diffusion chamber and the portholes are located above the raw material inlet with the single-layer or staggered layers;an upper end of the cylindrical combustion production chamber is connected with the combustion diffusion chamber;a cylinder wall tube of the cylindrical combustion production chamber is connected with a cylinder wall tube of the combustion diffusion chamber through a steel tube;a finished product outlet is arranged at a lower end inside the combustion diffusion chamber;a membrane wall is arranged outside the combustion diffusion chamber;a steam-water lead-out straight tube system is symmetrically arranged at an upper ...

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Номер записи: 96
28-03-2019 дата публикации

SYSTEM AND METHOD FOR OXYGEN CARRIER ASSISTED OXY-FIRED FLUIDIZED BED COMBUSTION

Номер: US20190093882A1
Автор: Hughes Robin W., Lu Dennis Y., Ridha Firas N., Symonds Robert T.
Принадлежит:

An oxygen fired fluidized bed combustor system (Oxy-FBC) is provided. The system provides means of producing a nearly pure stream of carbon dioxide for storage at high efficiency by controlling the oxygen content within certain regions of the combustor to control the rate of heat release allowing efficient transfer of heat from the combustor to the boiler tubes while avoiding excessively high temperatures that will cause ash melting, and simultaneously remove sulphur from the combustor via sorbents such as limestone and dolomite. The present invention utilizes a coarse oxygen carrier bed material to distribute heat and oxygen throughout an Oxy-FBC, while injecting fine sulphur sorbent that will continuously be removed from the bed. 1. A process for obtaining heat from combustion of a fuel comprising the steps of:i) providing a combustion chamber comprising a fluidized bed material and means for transferring heat out of the combustion chamber;ii) introducing the fuel and a gas into the combustion chamber;iii) introducing a sorbent into the combustion chamber wherein said sorbent is capable of adsorbing sulphur containing compounds;{'sub': 2', '2, 'iv) producing a gas stream comprising primarily of COand HO by combustion of the fuel; and'} wherein the bed material comprises at least a first material comprising particles having a first minimum transport velocity and a second material comprising particles having a second minimum transport velocity, and wherein the minimum transport velocity of the particles of the first material is greater than the minimum transport velocity of the particles of the second material;', 'wherein the first material comprises an oxygen carrier capable of transferring oxygen to and from the gases in the combustion chamber generated by the localized or distributed partial oxidation of the fuel;', 'wherein the second material comprises the sorbent;', 'wherein the gas introduced into the combustion chamber comprises oxygen and a moderating gas; ...

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Номер записи: 97
06-04-2017 дата публикации

METHOD AND ARRANGEMENT FOR PREVENTING GAS FROM LEAVING AN OPENING OF A VESSEL

Номер: US20170097192A1
Автор: GWYNN-JONES Stephen Francis, Nikolic Stanko, WOODALL Nathan Roy
Принадлежит: GLENCORE TECHNOLOGY PTY LIMITED

An arrangement () for preventing egress of a gas from a first opening of a vessel, the vessel including at least one other opening through which the gas can leave the vessel, the arrangement comprising an open passage () extending substantially around the first opening, the open passage () receiving a flow of gas such that the flow of gas leaves the open passage and flows towards and into the vessel to cause a gas from the environment external to the vessel to be drawn into the vessel. The arrangement may comprise a Coanda surface. The arrangement may be in the form of an inert for placement in the opening to the furnace. 1. A method for preventing egress of gas from a first opening of a vessel , the vessel including at least one other opening through which gas can leave the vessel , the method comprising supplying a flow of gas to an open passage extending substantially around the first opening and causing the flow of gas leaving the open passage to flow towards and into the vessel whereby a gas from an environment external to the vessel is caused to be drawn into the vessel , wherein a total flow of gas into the first opening substantially prevents gas from leaving the vessel through the first opening.2. An arrangement for preventing egress of a gas from a first opening of a vessel , the vessel including at least one other opening through which the gas can leave the vessel , the arrangement comprising an open passage extending substantially around the first opening , the open passage receiving a flow of gas such that the flow of gas leaves the open passage and flows towards and into the vessel to cause a gas from the environment external to the vessel to be drawn into the vessel.3. The arrangement as claimed in wherein the open passage extends around the first opening.4. The arrangement as claimed in wherein the first opening comprises a generally circular opening.5. The arrangement as claimed in wherein the open passage comprises an annular open passage extending ...

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Номер записи: 98
14-04-2016 дата публикации

Method and plant for producing iron from roasted pyrites

Номер: US20160102375A1
Автор: Alexander DYACHENKO, Bertram Böhringer, Raik SCHÖNFELD, Valeriy LARIN
Принадлежит: Bluecher GmbH

The invention relates to a method and a recovery system for obtaining/recovering metallic iron and/or iron compounds, in particular iron chloride, from ores and/or ore tailings, especially from pyrite tailings, preferably from roasted pyrites produced during sulphuric acid manufacture.

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Номер записи: 99
20-04-2017 дата публикации

Process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas

Номер: US20170108275A1
Автор: CHEN Yunfa, WAN Bin, Xu Wenqing, ZHU Tingyu
Принадлежит:

The present invention provides a process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas, in which the sintering flue gas is divided into low-temperature, high-oxygen, low-humidity section sintering flue gas; middle-temperature, low-oxygen, high-humidity section sintering flue gas; and high-temperature, high-oxygen, low-humidity section sintering flue gas according to the emission characteristics of temperature, oxygen content and humidity of the flue gas. The low-temperature, high-oxygen, low-humidity section sintering flue gas is led into the sintering machine for hot air ignition and hot air sintering; the middle-temperature, low-oxygen, high-humidity section sintering flue gas is subjected to dust removal and desulfurization treatments; the high-temperature, high-oxygen, low-humidity section sintering flue gas is mixed with exhaust gas of a cooler and then is led into the sintering machine for hot air sintering. The present invention can conduct grading utilization to the flue gas and recycle low-temperature sensible heat in flue gas, making the carbon monoxide left in the sintering flue gas burn again and thus saving energy consumption in the sintering process, on the premise that the quality and yield of the sintered ores are ensured. The present invention can also conduct cyclic utilization to the flue gas and thereby reduce pollutant emissions and the total emissions of sintering flue gas per unit of the sintered ores. Thus, the present invention has a very high value on energy saving and emission reduction. 1. A process for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas comprising:dividing the sintering flue gas into low-temperature, high-oxygen, low-humidity section sintering flue gas, middle-temperature, low-oxygen, high-humidity section sintering flue gas and high-temperature, high-oxygen, low-humidity section sintering flue gas;conducting the low- ...

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Номер записи: 100