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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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Применить Всего найдено 3559. Отображено 100.

27-09-2012 дата публикации

Combustion System Using Recycled Flue Gas to Boost Overfire Air

Номер: US20120244479A1

Автор: David Moyeda, Wei Zhou

Принадлежит: General Electric Co

The present application and the resultant patent provide a combustion system. The combustion system may include a combustion chamber for combusting a flow of fuel and a flow of air to a flow of flue gases, an overfire air system in communication with the combustion chamber, and a flue gas return line in communication with the overfire air system such that a recycled flue gas flow mixes with an overtire air flow before entry into the combustion chamber.

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Номер записи: 1

11-10-2012 дата публикации

Metering system, dense phase conveying system and method for supplying bulk material in powder form

Номер: US20120257934A1

Автор: Christian Eichhorn, Dietmar Rüger, Horst Kretschmer, Jörg Kleeberg, Olaf Schulze

Принадлежит: Linde GmbH

The present invention relates to a metering system for the steady, continuous, dosed supply of a bulk material in powder form made of light, polydisperse particles from a supply device (B, SG) into a plurality of conveying tubes (FR 1 , FR 2 , FR 3 ) to a consumer arranged downstream. The metering system comprises at least two metering containers (DB 1 , DB 2 , DB 3 ) each having a delivery device (AE 2/1 , AE 2/2 , AE 2/3 ), the delivery device (AE 2/1 , AE 2/2 , AE 2/3 ) for each of the conveying tubes (FR 1 , FR 2 , FR 3 ) comprising a dust flow regulation device (FI 1/1 , FI 2/1 , FI 3/2 ), which is assigned thereto and opens therein, and a mass flow measuring probe (FIC 1 , FIC 2 , FIC 3 ) being arranged on each of the conveying tubes (FR 1 , FR 2 , FR 3 ), which is coupled to the dust flow regulation device (FI 1/1 to FI 3/2 ) which opens into the corresponding conveying tube (FR 1 , FR 2 , FR 3 ). Furthermore, the metering system has a pressure regulation device, which is coupled to the pressure measuring devices (PI 1/1 , PI 1/2 , PI 1/3 ) arranged on the delivery devices (AE 2/1 , AE 2/2 , AE 2/3 ), and which controls a metering container pressure (PIS 2/1 , PIS 2/2 , PIS 2/3 ) at least as a function of a metering container fill level (LIS 1 , LIS 2 , LIS 3 ). A pump device (V) can be coupled to each of the metering containers (DB 1 , DB 2 , DB 3 ), which provides a pressure (PIS 2/1 , PIS 2/2 , PIS 2/3 ) in the metering container (DB 1 , DB 2 , DB 3 ), which is less than a pressure in the supply device (B, SG). Furthermore, the invention discloses a dense phase conveying system, which comprises the metering system and a method for the steady, continuous, dosed supply of a bulk material in powder form made of light, polydisperse particles.

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Номер записи: 2

01-11-2012 дата публикации

Reducing Mercury Emissions From The Burning Of Coal

Номер: US20120272877A1

Автор: Douglas C. Comrie

Принадлежит: Nox II Ltd

Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.

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Номер записи: 3

13-12-2012 дата публикации

Method for reducing slag in biomass combustion

Номер: US20120312206A1

Автор: Hung-Ting Chen, Jitendra Shah, Nandakumar Srinivasan, Robert W. Dorner

Принадлежит: Nalco Co LLC

Biomass is quickly becoming an important feedstock for energy generation in power plants. Due to their composition and nature, certain biomass fuels contribute to slagging, fouling, and corrosion. This invention provides a novel method of reducing or suppressing slag deposition and/or cleaning deposited slag in energy production processes in which potassium-containing solid fuels are combusted. Besides acting as a slag suppressant, further advantages of this invention are that the additive has no detrimental side-effects on capital equipment, increases slag friability, decreases slag fouling rate, reduces heat transfer corrosion as well as increasing the lifetime of the selective catalytic reduction catalyst.

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Номер записи: 4

20-12-2012 дата публикации

Burner system for waste plastic fuel

Номер: US20120318180A1

Автор: Thomas Anthony Patti PATERNOSTRO, William Hunkyun Bang

Принадлежит: Individual

The present invention provides a burner system which uses waste fuels, especially waste plastic fuels. Burner size is minimized by having multiple combustion chambers concentrically located around a rotating screw conveyor. Heat efficiency is improved by having air passages disposed around the combustion chambers, thus preheating air for the combustion prior to its delivery to the combustion chambers, while simultaneously thermally insulating the combustion chambers against the environment. Waste fuel is transported from a fuel hopper to the combustion chambers by a rotating screw conveyor having the spiraling auger blades. Speed of screw conveyor rotation controls the consumption of waste fuel and, thus, the amount of thermal energy generated in the burner. The burner system includes an intelligent control system for controlling operation of the burner system, so that the burner system performs at optimum efficiency, safely and with minimum operator intervention.

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Номер записи: 5

07-03-2013 дата публикации

Biomass pulverizing apparatus and biomass/coal mixed-combustion system

Номер: US20130055935A1

Автор: Kazuhiro Takeuchi, Masaaki Kinoshita, Norichika Kai, Takuichiro Daimaru, Yoshiki Yamaguchi

Принадлежит: Mitsubishi Heavy Industries Ltd

A biomass pulverizing apparatus includes a pulverizing apparatus body including a feedstock supply pipe for supplying biomass feedstock from above in a vertical axial direction, a pulverizing table for placing the biomass feedstock, a drive section for rotationally driving the pulverizing table, a pulverizing roller for pulverizing the biomass feedstock by a pressing force, the pulverizing roller being operated in conjunction with the rotation of the pulverizing table, a blower means for forming an upward flow upward from below on the outer peripheral side of the pulverizing table so as to jet conveying gas for conveying the biomass powder in an air stream, and a classifier for classifying the biomass powder accompanied with the conveying gas.

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Номер записи: 6

01-08-2013 дата публикации

Device for Introducing Biomaterial into a Combustion or Carburetor Chamber

Номер: US20130192543A1

Автор: Claus Hinterecker

Принадлежит: RAW HOLDING GmbH

The invention relates to a device for introducing biomaterial into a pressure-loaded combustion or carburetor chamber ( 1 ), comprising a feed apparatus ( 2 ) for feeding biomaterial to a pressure pipe ( 3 ), in which a plunger ( 4 ) is guided in such a way that the plunger can be moved back and forth against a pressure lock ( 5 ) to the combustion or carburetor chamber ( 1 ) in order to form a compressed plug ( 6 ) comprised of biomaterial, which is sealed against the combustion chamber ( 1 ) and which is periodically advanced toward the combustion chamber ( 1 ).

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Номер записи: 7

29-08-2013 дата публикации

Solid fuel skewer suspension burning system

Номер: US20130224673A1

Автор: Allen G. Bowman, John J. Tiernan

Принадлежит: AFS Tech LLC

A skewer system comprises a skewer rod that holds tires in suspension during an incineration process where the tires are burned for fuel in a kiln such as a cement kiln or a lime kiln. In certain implementations, the skewer system also comprises a fuel advancing system to advance tires loaded onto the skewer rod into the heated gas in a stationary heat transfer station of the kiln. In further exemplary implementations, the skewer system comprises a mechanism to recover wire remnants from incinerated tires, the wire can be cut off the skewer and dropped into the kiln, or the wire itself can be burned off.

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Номер записи: 8

24-10-2013 дата публикации

System and method for purifying solid carboniferous fuels, using a rotary chamber, prior to chemical looping combustion

Номер: US20130277198A1

Автор: Peter Rugg

Принадлежит: Individual

Solid carboniferous fuels contain varying quantities of moisture, mercury, chlorine, nitrogen, sulfur, heavy metals and other materials that attain vapor pressure at elevated temperatures. The cost effective removal of these degrading and sometimes hazardous materials is important to the further use of the fuel for combustion as a solid, liquid, or gas. The solid fuel is cut, shredded, ground or sieved to appropriate size, and heated in a chamber that can exclude oxygen and air thus preventing ignition. The unwanted materials are driven in the gaseous state and extracted for disposal. The solid fuel cleaned of pollutants exits the chamber and is cooled below ignition temperature prior to contact with oxygen. The solid fuel thus purified is more appropriate for combustion, liquefaction or gasification due to the reduced costs in use as a fuel or in the post combustion clean up.

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Номер записи: 9

05-12-2013 дата публикации

Method and system for milling a fuel for an oxy-fuel combustion burner

Номер: US20130319303A1

Автор: Friedemann Kendel, Gerhard Heinz, Gisbert Wolfgang Kaefer, Hardy Rauchfuss, Hellmuth Brueggemann, Michal Tadeusz Bialkowski, Patrick MOENCKERT, Staffan Jonsson, Thomas Wild, Turgay PEKDEMIR

Принадлежит: Alstom Technology AG

The present disclosure relates to a method of milling a fuel for an oxy-fuel combustion burner, the method includes: separating air into a hot nitrogen gas stream, having a temperature of at least 150° C. and a purity of at least 98 mol-% nitrogen, and an oxygen gas stream; leading at least a part of the nitrogen gas stream to a fuel mill; milling the fuel by means of the fuel mill in a nitrogen rich atmosphere formed by means of the nitrogen gas stream; leading the at least a part of the nitrogen gas stream away from the milled fuel; leading the oxygen gas stream to the oxy-fuel combustion burner; conveying the milled fuel to the oxy-fuel combustion burner; and burning the fuel, by means of the oxy-fuel combustion burner, in an oxygen rich atmosphere formed by means of the oxygen gas stream. The present disclosure further relates to a system for milling a fuel for an oxy-fuel combustion burner as well as to a power plant comprising such a system.

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Номер записи: 10

27-02-2014 дата публикации

Reducing sulfur gas emissions resulting from the burning of carbonaceous fuels

Номер: US20140053760A1

Автор: Douglas C. Comrie, Vincent A. Vellella

Принадлежит: Nox II Ltd

A method of reducing sulfur emissions by applying remediation materials in a powder sorbent onto coal and combusting the coal with the materials applied. The powder sorbent contain sources of silicon, aluminum, calcium, iron, and magnesium, and ash from combustion contains the captured sulfur.

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Номер записи: 11

06-03-2014 дата публикации

Single-fireball tangentially-firing boiler for the burning of anthracite

Номер: US20140065561A1

Автор: Fei Chen, Gongquan Liu, Jianwen Zhang, Xiang Zhang

Принадлежит: Shanghai Boiler Works Co Ltd

A tangentially-fired furnace for the burning of anthracite is disclosed. The furnace may contain a boiler with a chamber having four corners. Four burner groups located at the four corners may be configured to eject pulverized coal flow into the chamber for combustion, in order to form a single fireball substantially at the center of the chamber during combustion. Each burner group may contain a first burner which includes primary-air/rich-portion nozzles for ejecting rich-portion coal flow into a lower section of the chamber, and a second burner which includes primary-air/thin-portion nozzles for ejecting thin-portion coal flow into a higher section of the chamber.

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Номер записи: 12

11-01-2018 дата публикации

Control system for controlling feed of solid fuel in a combustion process

Номер: US20180010794A1

Автор: Janne Kovanen, Mika Muinonen

Принадлежит: Inray Oy

Disclosed is a control system for controlling the feed of a solid fuel in a combustion process. The system includes a control unit which is adapted to communicate by way of a communications link in the system, to receive from online measuring instruments online measurement data regarding a fuel coming from a fuel reception unit, and to control a feeding unit for delivering the measured fuel into a fuel silo on the basis of its content model and measurement data.

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Номер записи: 13

09-01-2020 дата публикации

POWER PLANT METHODS AND APPARATUS

Номер: US20200011242A1

Автор: Fukuizumi Yasushi, Kukoski Allan, Wu Song

Принадлежит:

A hybrid power plant system including a gas turbine system and a coal fired boiler system inputs high oxygen content gas turbine flue gas into the coal fired boiler system, said gas turbine flue gas also including carbon dioxide that is desired to be captured rather than released to the atmosphere. Oxygen in the gas turbine flue gas is consumed in the coal fired boiler, resulting in relatively low oxygen content boiler flue gas stream to be processed. Carbon dioxide, originally included in the gas turbine flue gas, is subsequently captured by the post combustion capture apparatus of the coal fired boiler system, along with carbon diode generated by the burning of coal. The supply of gas turbine flue gas which is input into the boiler system is controlled using dampers and/or fans by a controller based on an oxygen sensor measurement and one or more flow rate measurements. 1. A power system comprising: a boiler;', 'an oxygen sensor; and', i) a gas turbine flue gas boiler hopper input of said boiler or', 'ii) a gas turbine flue gas mill air supply duct input which is included as part of a mill air supply duct which supplies air to a mill which provides fuel to said boiler;, 'one or more gas turbine flue gas inputs including at least one of], 'a boiler system includinga gas turbine system; anda controller for controlling the supply of gas turbine flue gas to said one or more gas turbine flue gas inputs of said boiler system based on an oxygen level measured by said oxygen sensor.2. The power system of claim 1 , wherein the boiler system includes:a burner; andat least said gas turbine flue gas boiler hopper input for receiving gas turbine flue gas and supplying said received gas turbine flue gas into said boiler at a location beneath the burner.3. The power system of claim 2 , wherein said boiler system further includes:a burner air supply duct which supplies air to a burner of said boiler, said burner air supply duct including a gas turbine flue gas burner air supply ...

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Номер записи: 14

03-02-2022 дата публикации

PROCESS FOR PRODUCING SOLID BIOMASS FUEL

Номер: US20220033727A1

Автор: Bai Hong Mei

Принадлежит:

The present invention relates to a process for producing a solid biomass fuel from agricultural waste such as grass, rice husk, yam, straw, corn cob or any combination thereof, as well as a solid biomass fuel produced by said process. Additionally, the present invention relates to a combustion process comprising combusting said solid biomass fuel so as to produce energy and a pre-treatment process for pre-treating one or more sources of biomass for use in the production of a solid biomass fuel. 1. A process for producing a solid biomass fuel , wherein the process comprises the following steps:(i) providing one or more sources of biomass with an average particle diameter (D50) of from 30,000 μm to 60,000 μm and a moisture content of less than 50% by weight;(ii) pulverising the one or more sources of biomass to provide a pulverised biomass powder with an average particle diameter (D50) of from 1000 μm to 20,000 μm;(iii) compressing the pulverised biomass powder so as to provide a compressed biomass powder with a moisture content of less than 30% by weight;(iv) drying the compressed biomass powder so as to provide a dried compressed biomass powder;(v) molding the dried compressed biomass powder so as to provide a molded biomass product;(vi) heating the molded biomass product to a temperature of from 160° C. to 420° C. for a time period of from 0.25 to 5 hours so as to provide a solid biomass fuel; and(vii) removing dust particles from the solid biomass fuel.2PennisetumPennisetum sinesePennisetumPennisetum sinese. A process according to claim 1 , wherein (i) the one or more sources of biomass comprise agricultural waste; (ii) the one or more sources of biomass comprise grass claim 1 , rice husk claim 1 , yam claim 1 , straw claim 1 , corn cob claim 1 , or any combination thereof; (iii) the one or more sources of biomass comprise grass in an amount of from 20% to 80% by weight claim 1 , and one or more of rice husk claim 1 , yam claim 1 , straw claim 1 , corn cob claim 1 ...

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Номер записи: 15

03-02-2022 дата публикации

PELLET HOPPER LINER

Номер: US20220034512A1

Автор: Colston Michael V., Hoang Phuong K., Sluder Daniel W.

Принадлежит:

A pellet hopper for use in a pellet grill includes a first bottom panel, a second bottom panel, and a third bottom panel. Each bottom panel has an inner edge that partially defines a pellet evacuation opening. The first, second, and third bottom panels form respective first, second, and third nonzero angles relative to a horizontal plane. In this way, each bottom panel tilts downward toward the pellet evacuation opening. 1. A pellet hopper assembly comprising a pellet evacuation insert , the pellet evacuation insert comprising:a first insert panel connected to a second insert panel at a first interface; anda third insert panel connected to the second insert panel at a second interface; the first, second, and third insert panels have first, second, and third inner edges that at least partially define a pellet evacuation insert opening;', 'the first, second, and third insert panels are angled at respective first, second, and third nonzero angles with respect to the horizontal plane such that the first, second, and third insert panels of the pellet evacuation insert tilt downward toward the pellet evacuation insert opening; and', 'each of the first, second, and third insert panels include an outer edge that contacts a top surface of each of the first, second, and third panels of the hopper bottom, respectively., 'wherein2. The pellet hopper assembly of claim 1 , wherein the pellet evacuation insert further comprises a fourth insert panel having a fourth inner edge that at least partially defines the pellet evacuation insert opening claim 1 , the fourth insert panel being angled at a nonzero angle with respect to the horizontal plane so that the fourth insert panel of the pellet evacuation insert tilts downward toward the pellet evacuation insert opening.3. The pellet hopper assembly of claim 2 , wherein the first claim 2 , second claim 2 , third claim 2 , and fourth insert panels are planar trapezoid so as to form a rectangular pellet evacuation insert opening.4. The ...

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Номер записи: 16

26-01-2017 дата публикации

PULVERIZER MONITORING

Номер: US20170021361A1

Автор: Chase Gerald, SAUNDERS DAVID C, Sutton James P., Tobiasz Rebecca Lynn

Принадлежит:

A system for detecting a combustion-related condition in a pulverizer includes a pulverizer configured to receive coal chunks via an inlet, to grind the coal chunks into coal powder and to output the coal powder via an outlet. The system includes sensors configured to detect heat input characteristics supplied to the pulverizer and heat output characteristics emitted from the pulverizer. The system also includes a controller configured to determine, based on signals from the sensors, whether a combustion-related condition exists in the pulverizer based on a heat balance function including the heat input characteristics and the heat output characteristics. 1. A system for detecting a combustion-related condition in a pulverizer , the system comprising:a pulverizer configured to receive coal chunks via an inlet, to grind the coal chunks into coal powder and to output the coal powder via an outlet;sensors configured to detect heat input characteristics supplied to the pulverizer and heat output characteristics emitted from the pulverizer; anda controller configured to determine, based on signals from the sensors, whether a combustion-related condition exists in the pulverizer based on a heat balance function including the heat input characteristics and the heat output characteristics.2. The system of claim 1 , further comprising:a grinding bowl in which the coal chunks are ground into the coal powder; anda drying and transport air inlet located beneath the grinding bowl and configured to supply drying and transport air around the edges of the grinding bowl,wherein the heat input characteristics measured by the sensors include a temperature and a humidity level of the drying and transport air at the drying and transport air inlet.3. The system of claim 1 , wherein the heat input characteristics include a temperature and humidity of air input to the inlet and heat generated by grinding the coal chunks into coal powder claim 1 , andthe output heat characteristics include ...

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Номер записи: 17

25-01-2018 дата публикации

Device and method for conveying bulk material into a pressure chamber

Номер: US20180022554A1

Автор: Harald Faber

Принадлежит: Schenck Process Europe GmbH

A device for continually conveying dust-like or granular bulk materials into a pressure Chamber, having an inlet opening through which the bulk material is supplied or discharged from a bulk material storage, a housing which is arranged along a rotational axis, a conveying region which adjoins the inlet opening, and a shaft which rotates in the housing and which has a conveyor arranged on the circumference. The rotational axis, the housing and the shaft are arranged vertically, and a seal in the form of a regeneratable material seal stopper. The seal sealing the pressure chamber, is arranged in the conveyor region between the pressure chamber and the inlet opening. The housing has a polygon, a cannelure, or at least one helically running groove on the housing inner wall, and the orientation of the polygon, the cannelure, or the groove runs substantially perpendicularly to the two-dimensional orientation of the conveyor.

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Номер записи: 18

26-01-2017 дата публикации

Coal rope distributor with replaceable wear components

Номер: US20170023243A9

Автор: Christopher D. Curl, Dai Q. Dau, Daniel J. Adam, Oliver G. Briggs, Paul M. Colson, Thomas J. Campanelli, Wendell H. Mills

Принадлежит: Alstom Technology AG

A head assembly for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes. The vanes may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port toward the outlet port. The curved vanes curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover that allows for easy access. The vanes are attached to a wear-resistant replaceable liner thus allowing them to be easily removed and replaced. The wear-resistant liner may be made from several parts for ease of removal and replacement.

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Номер записи: 19

26-01-2017 дата публикации

BOOSTER AIR HEATER FOR HIGH MOISTURE FUELS

Номер: US20170023244A1

Автор: DARLING Scott L., SALDON Edward S.

Принадлежит:

A system for drying pulverized high moisture fuel for use in a selective catalytic reduction system equipped combustion system is provided. The combustion system includes a mill for pulverizing fuel, an air heater, two fuel gas streams at different temperatures, a booster air heater and a fuel duct for feeding dried pulverized fuel to a combustion furnace. 1. A selective catalytic reduction system equipped combustion system fueled by high moisture fuel comprising:a mill for pulverizing high moisture fuel to obtain pulverized fuel;an interior chamber;an air heater operable to heat primary air to an increased temperature using a first flue gas stream and a second flue gas stream, the second flue gas stream being a portion of the flue gas exiting the interior chamber of the combustion system prior to passing through a heat exchanger and being a higher temperature than the first flue gas stream;a booster air heater operable to heat primary air of an increased temperature to a higher temperature using the second flue gas stream; anda fuel duct for passage of higher temperature primary air through the mill to dry the pulverized fuel and to carry the dry pulverized fuel from a mill outlet to a combustion furnace.2. The system according to wherein said high moisture fuel is one or more fuels selected from the group consisting of sub-bituminous coal and lignite.3. The system according to wherein said air heater uses flue gas from a selective catalytic reduction system as a heat source.4. The system according to wherein said flue gas has a temperature in the range of 700° F. to about 750° F. upon entering said selective catalytic reduction system.5. The system according to wherein said flue gas has a temperature in the range of 550° F. to about 650° F. upon entering said catalytic reduction system.6. The system according to wherein said increased temperature is a temperature in the range of 400° F. to about 500° F.7. The system according to wherein said higher temperature is ...

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Номер записи: 20

25-01-2018 дата публикации

PRESSURE VESSEL AND METHOD

Номер: US20180023809A1

Автор: Saunders Timothy

Принадлежит: GAS TECHNOLOGY INSTITUTE

A pressure vessel includes a pump having a passage that extends between an inlet and an outlet. A duct at the pump outlet includes at least on dimension that is adjustable to facilitate forming a dynamic seal that limits backflow of gas through the passage. 1. A pressure vessel comprising:a pump including a passage having a generally constant cross-sectional area between an inlet and an outlet and defined on two sides by respective belts that are moveable along the passage; anda duct at the outlet and having a predetermined cross-sectional area that is approximately equal to the cross-sectional area of the passage, wherein the duct and the passage of the pump both include non-circular cross-sections.2. The pressure vessel as recited in claim 1 , wherein the uniform width and the uniform depth are substantially perpendicular to a centerline of the passage of the pump.3. The pressure vessel as recited in claim 1 , wherein the length is substantially parallel to a centerline of the passage of the pump.4. The pressure vessel as recited in claim 1 , wherein the duct includes at least one wall that is movable to influence pressure that the wall exerts on a dynamic seal responsive to a detected gas pressure in the pump.5. The pressure vessel as recited in claim 1 , further comprising an actuator operatively connected with at least one wall of the duct to adjust at least one of the length claim 1 , the uniform width along the length and the uniform depth along the length.6. The pressure vessel as recited in claim 1 , wherein the duct includes at least one wall having a first wall section and an adjacent second wall section that is movable relative to the first wall section.7. The pressure vessel as recited in claim 1 , wherein the duct adjoins the outlet and is defined by fixed walls.8. The pressure vessel as recited in claim 1 , wherein the predetermined cross-sectional area of the duct is within +/−10% of the cross-sectional area of the passage.9. The pressure vessel as ...

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Номер записи: 21

23-01-2020 дата публикации

SYSTEMS AND METHODS FOR COLLECTING, TRANSPORTING AND REPURPOSING OR DESTROYING UNUSED PHARMACEUTICALS

Номер: US20200024535A1

Автор: Aladwani Khairan, Davis Greg C., Harris Jan, Tusa David P.

Принадлежит:

Systems and methods implementing the systems including a facility including a plurality of collection apparatuses distributed in the facility for ease of collection and transportation. The system also includes transportation subsystems for shipping filled inner containers to a processing subsystem and for transporting a fuel material or a land fillable material to incineration or landfill subsystems. The systems may also include a monitoring subsystem for monitoring the deployed collection apparatuses, inner containers, the fuel material and the land fillable material. 123.- (canceled)24. A collection apparatus comprising i. an exterior, wherein the exterior is not adjacent to the exterior of a second outer container,', 'ii. an interior,', 'iii. a first opening; and', 'iv. a second opening;, 'a. a first outer container, the first outer container havingb. a door, the door mounted to the first outer container, the door positioned so as to allow access to the interior of the first outer container through the second opening; i. a scoop unidirectional depositing member, the scoop unidirectional depositing member including a scoop mounted within the first opening, the scoop sized so as to accept waste pharmaceutical containing materials to be deposited into the interior, the scoop rotatable about an axis; or', 'ii. the unidirectional depositing member consists of a slit through the exterior; and, 'c. a unidirectional depositing member, the unidirectional depositing member communicating between the exterior and the interior of the first outer container through the first opening in the first outer container, wherein the unidirectional depositing member comprisesd. an inner container, the inner container positioned within the interior of the first outer container.25. The collection apparatus of further claim 24 , wherein the unidirectional depositing member is the scoop unidirectional depositing member and wherein the scoop includes a handle on an outer surface of the scoop. ...

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Номер записи: 22

02-02-2017 дата публикации

Method for controlling nox concentration in exhaust gas in combustion facility using pulverized coal

Номер: US20170029328A1

Автор: Hirokazu Shima, Yoshinori Takayama

Принадлежит: Mitsubishi Materials Corp

A method for controlling an NOx concentration in an exhaust gas in a combustion facility by: measuring a reaction velocity k i of each of a plurality of chars, each corresponding to a plurality of types of pulverized coals; determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity k i for each of the chars; (iii) blending the plurality of the types of the pulverized coal, wherein a blending ratio of the plurality of the types of the pulverized coal is determined by using, as an index, a reaction velocity k blend of the char of the blended pulverized coal, which corresponds to a target NOx concentration or below, on the basis of the relationship; and supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility.

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Номер записи: 23

01-02-2018 дата публикации

COMBUSTION BURNER AND BOILER

Номер: US20180031232A1

Автор: Domoto Kazuhiro, Matsumoto Keigo, TAKAYAMA Akimasa, TOMINAGA Yukihiro, TSUKAHARA Keita, YUASA Atsushi

Принадлежит: Mitsubishi Hitachi Power Systems, Ltd.

In this combustion burner and boiler, interference of ignition in a flame stabilizer is suppressed and flame stabilizing performance is improved by providing: a fuel nozzle which ejects a fuel gas that is a mixture of pulverized coal and air; a combustion air nozzle which ejects a fuel gas combustion air from outside of the fuel nozzle; a secondary air nozzle which ejects secondary air from the outside of the combustion air nozzle; and a flame stabilizer which comprises a first flame stabilizer main body which is arranged at the leading end of the fuel nozzle and separated by a prescribed space from the inner wall surface of the fuel nozzle and which forms a ring shape having as the center an axial line along the ejection direction of the fuel gas. 112-. (canceled)13. A combustion burner comprising:a fuel nozzle configured to eject fuel gas obtained by mixing fuel and air;a secondary air nozzle configured to eject air from outside the fuel nozzle;a flame stabilizer including a plurality of flame stabilizer main bodies disposed on a leading end of the fuel nozzle, the plurality of flame stabilizer main bodies being separated from each other by a predetermined space, and separated from an inner wall surface of the fuel nozzle by a predetermined space; anda plurality of support members supporting the plurality of flame stabilizer main bodies on the inner wall surface of the fuel nozzle.14. The combustion burner according to claim 13 , wherein:the plurality of flame stabilizer main bodies are disposed in a lattice form or a staggered form on a surface that is orthogonal to a flow direction of the fuel gas.15. The combustion burner according to claim 13 , wherein:portions of the plurality of flame stabilizer main bodies that face each other are provided with a flat surface portion.16. The combustion burner according to claim 13 , wherein:the flame stabilizer main body forms a triangular cross-sectional shape that widens facing downstream in an ejection direction of the ...

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Номер записи: 24

17-02-2022 дата публикации

System and Method for Combusting High-Moisture Fuel to Generate Steam

Номер: US20220049848A1

Автор: DAgostini Mark Daniel

Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

A process for combusting a high-moisture fuel to generate steam in which the high-moisture solid fuel is first dried by contacting with an oxygen-depleted gas stream while being heated by indirect heat exchange with a recirculating thermal fluid. The dried fuel is then combusted with a combustion air stream to produce a combustion products stream whose heat first is used to generate steam, and then to preheat the combustion air stream by indirect heat exchange in which a portion of the combustion air stream and/or a portion of the combustion products stream bypasses the heat exchanger. The combustion products stream also provides heat to dry the solid fuel via the recirculating thermal fluid. 1. A process for combusting a high-moisture fuel to generate steam , the process comprising:contacting a high-moisture solid fuel with an oxygen-depleted gas stream while heating the high-moisture solid fuel by indirect heat exchange with a recirculating thermal fluid to produce a dried solid fuel and a moist oxygen-depleted gas stream;combusting the dried solid fuel with a combustion air stream to produce a combustion products stream having an amount of heat;transferring a first portion of the amount of heat to generate steam by indirect heat exchange with the combustion products stream;transferring a second portion of the amount of heat to preheat the combustion air by indirect heat exchange with the combustion products stream;transferring a third portion of the amount of heat to the recirculating thermal fluid by indirect heat exchange with the combustion products stream; andbypassing one or both of a portion of the combustion air stream to avoid the indirect heat exchange with the combustion products stream and a portion of the combustion products stream to avoid the indirect heat exchange with the combustion air stream.2. The process of claim 1 , wherein the high-moisture solid fuel flows counter-current to the recirculating thermal fluid and co-current to the oxygen- ...

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Номер записи: 25

11-02-2016 дата публикации

Biomass combustion

Номер: US20160040873A1

Автор: Adam NICHOLSON, Jason SHIPSTONE, Paul STRAKER

Принадлежит: Drax Power Ltd

The present invention relates to a means and method for at least injecting mitigant particles into the combustion region (fireball) of a biomass boiler. The mitigant particles mitigate the slagging, fouling and corrosion problems caused by biomass ash by at least capturing the biomass ash. The mitigant particles capture the biomass ash by forming a physical bond with the biomass ash such that it adheres to the surface of mitigant particles. By injecting the mitigant particles into the combustion region, the opportunity to capture biomass ash is optimised.

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Номер записи: 26

07-02-2019 дата публикации

A SELF-POWERED TIME SHARING REACTION SYSTEM AND METHOD FOR ORGANIC MATERIALS PYROLYSIS AND COMBUSTION

Номер: US20190039010A1

Автор: LI Aimin, WANG Xin, ZHANG LEI

Принадлежит: Dalian University of Technology

The present invention relates to a self-powered time sharing reaction system and method for organic materials pyrolysis and combustion. The system comprises a time sharing reactor for pyrolysis and combustion, a feeder, a recovery apparatus for pyrolysis volatility products and a flue gas purifier. The whole process mainly consists of two time sharing stages of pyrolysis and combustion: organic materials are sent into the time sharing reactor for pyrolysis and combustion, and solid thermal carrier rapidly heats the organic materials and the pyrolysis reaction takes place. The produced pyrolysis volatility products enter the recovery apparatus for the recycling of the pyrolysis gas and pyrolysis oil; when the pyrolysis reaction is over, fill air into the time sharing reactor for pyrolysis and combustion to combust with the rest of the pyrolysis volatility products and the pyrolysis residue in the reactor. The heat produced during the combustion heats the solid thermal carrier, the flue gas is released after being purified, the heated solid thermal carrier is left in the time sharing reactor for pyrolysis and combustion to provide energy for the next organic materials pyrolysis. The process is thus repeated. The system has the advantages of cascade utilization of energy, short time of pyrolysis reaction and high efficiency of heat transfer. 1. A self-powered time sharing reaction system for organic materials pyrolysis and combustion comprises a feeder , a time sharing reactor for pyrolysis and combustion , a recovery apparatus for pyrolysis volatility products and a flue gas purifier;The feeder comprises a low viscosity organic materials feeder and a high viscosity organic materials feeder;There are two time sharing reaction stages of pyrolysis and combustion in the time sharing reactor for pyrolysis and combustion; The time sharing reactor for pyrolysis and combustion comprises a solid thermal carrier, the solid thermal carrier comprises an inner air duct inside and ...

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Номер записи: 27

24-02-2022 дата публикации

Energy And Environmental Optimisation Of A Facility Comprising At Least One Combustion Apparatus With Burner

Номер: US20220057084A1

Автор: Champseix Henri, Jerez Nicolas

Принадлежит: Bulane

The invention concerns a system for energy and environmental optimisation of a facility comprising at least one combustion apparatus () with a burner (). The system comprises an electrolyser () and an injection system () connected to at least one fuel () and/or oxidant () inlet of the burner (). The injection system is capable of injecting, at such an inlet, gases from the electrolyser () and/or a mixture of these gases and a combustible fluid and/or an oxidising fluid. The electrolyser () and/or the injection system () are controlled on the basis of at least one piece of information originating from the combustion apparatus () and/or sensors () of the installation. The electrolyser can comprise a heat exchanger () for cooling the device and/or preheating the water (EP) that is intended to then be heated (EC) by the combustion apparatus (). 1. A system for energy and environmental optimization of a facility , the facility comprising at least one combustion apparatus comprising at least one burner , the system comprising:at least one production device for producing hydrogen and/or oxygen by water electrolysis, and 'the system configured for:', 'at least one injection system connected to at least one fuel and/or oxidant inlet of the burner,'} 'injecting into the oxidant inlet gases coming from the production device, and/or a mixture of these gases, as well as an oxidant fluid,', 'injecting into the fuel inlet gases coming from the production device, and/or a mixture of these gases, as well as a fuel fluid, and/or'}the system comprising at least one electronic module connected to the production device, to the combustion apparatus and/or to sensors equipping the facility,the module configured for controlling the production device and/or the injection system as a function of at least one piece of information coming from the combustion apparatus and/or the sensors.2. The system as claimed in claim 1 , wherein the production device comprises a heat exchanger configured for ...

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Номер записи: 28

15-02-2018 дата публикации

REDUCING MERCURY EMISSIONS FROM THE BURNING OF COAL

Номер: US20180045408A1

Автор: Comrie Douglas C.

Принадлежит:

Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components 1. A method of combusting coal to reduce the amount of mercury released into the environment from a coal burning facility , comprisingcombusting the coal to produce heat energy, fly ash, and flue gas;injecting a mercury sorbent comprising halogen into the flue gas where the temperature is higher than 500° C.; andadding a powder sorbent to the coal before combustion or injecting a powder sorbent into the furnace while the coal is combusting,wherein the powder sorbent comprises a source of calcium, alumina, and silica.2. The method according to claim 1 , comprising injecting the mercury sorbent where the temperature is higher than 1000° C.3. The method according to claim 1 , comprising injecting the mercury sorbent where the temperature is 1500-2200° F.4. The method according to claim 1 , comprising injecting the mercury sorbent where the temperature is 2400-2600° F.5. The method according to claim 1 , comprising injecting the mercury sorbent where the temperature is 3000-3300° F.6. The method according to claim 1 , wherein the mercury sorbent comprises a bromine compound.7. The method according to claim 1 , wherein the mercury sorbent comprises an iodine compound.8. The method according to claim 1 , wherein the powder sorbent comprises an aluminosilicate material.9. The method according to claim 1 , wherein the powder sorbent comprises cement kiln dust.10. The method according to claim 1 , comprising adding the powder sorbent to the coal before combustion.11. The method according to claim 1 , ...

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Номер записи: 29

15-02-2018 дата публикации

QUICK-DISCONNECT GAS PIPELINE

Номер: US20180045409A1

Автор: Jenkins Cameron

Принадлежит:

A quick-disconnect gas pipeline comprises a quick-disconnect device (QDD) which comprises a QDD male end and a QDD female end, and a gas hose. The QDD male end is connected to the gas pipeline inside the heating system and the QDD female end is connected to the gas hose outside the heating system. When the heating system is not used, it is easy to disconnect the QDD to prevent people from tripping over the long gas pipeline. 1. A quick-disconnect gas pipeline for a gas heating table comprising: a table top;', 'a plurality of legs supporting the table top, at least one leg of the plurality of legs being hollow and comprising an internal gas pipeline extending therethrough; and', 'a heating part disposed on the table top and connected to the internal gas pipeline, and, 'a quick disconnect device (“QDD”) which comprises a QDD male end and a QDD female end, and a gas hose, wherein the gas heating table comprises'}wherein said QDD male end is mounted to the at least one leg of the plurality of legs and is connected to the internal gas pipeline and the QDD female end is connected to the gas hose outside the heating system.2. (canceled)3. (canceled)4. The quick-disconnect pipeline according to claim 1 , wherein when said heating part is not used claim 1 , said gas hose outside said gas heating table is configured to be disconnected at said QDD.5. The quick-disconnect pipeline according to claim 1 , wherein said gas hose outside said gas heating table is configured to be connected at said QDD so that said gas heating table is configured to be connected to an external gas tank.6. The quick-disconnect gas pipeline according to claim 5 , wherein the connection of said QDD is realized by pulling a safety device outside said QDD female end to put said QDD female end on said QDD male end and then releasing said safety device.7. The quick-disconnect gas pipeline according to claim 4 , wherein the disconnection of said QDD is realized by pulling a safety device outside said QDD ...

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Номер записи: 30

26-02-2015 дата публикации

ADJUSTABLE DIVISION PLATE FOR CLASSIFIER COAL FLOW CONTROL

Номер: US20150056024A1

Автор: Rath John, Yaldizli Murat

Принадлежит: Babcock Power Services, Inc.

A solid particle distribution controller includes a plurality of division plates proximate a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes. The solid particle distribution controller also includes a plurality of extension plates. Each of the extension plates is movably mounted proximate to a respective division plate for movement in an upstream and downstream direction with respect to the division plate. The plurality of extension plates are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the division plates as needed to improve solid particle distribution among the downstream pipes. 1. A solid particle flow distribution controller comprising:a plurality of division plates proximate a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes; anda plurality of extension plates, each of the extension plates movably mounted proximate to a respective division plate for movement in an upstream and downstream direction with respect to the division plate, wherein the plurality of extension plates are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the division plates as needed to improve solid particle distribution among the downstream pipes.2. A solid particle flow distribution controller as recited in claim 1 , wherein the extension plates are mounted to their respective division plates by way of tracks configured to guide movement of the extension plates.3. A solid particle flow distribution controller as recited in claim 1 , wherein each extension plate is operatively connected to an actuator for moving the extension plate claim 1 , wherein the actuator is selected from the group consisting of a manual actuator claim 1 , an electrical actuator claim 1 , a pneumatic actuator claim 1 , and a hydraulic actuator.4. A solid particle flow ...

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Номер записи: 31

15-05-2014 дата публикации

Device and Method for Controlling The Fuel-Air Ratio in the Combustion of Ground Coal in a Firing System of a Coal-Fired Power Station

Номер: US20140130723A1

Автор: Alexander Halm, Hans Georg Conrads, Martin Böhm

Принадлежит: PROMECON Prozess und Messtechnik Conrads GmbH

Coal-fired power station with controller for air-fuel ratio in combustion of ground coal, with pneumatic conveying of ground coal to burners of power station. An electrode ( 10 ) with average radius r m with 0.1 mm≦r m ≦1.2 mm arranged in channel carrying air in flow direction of air upstream of sensors ( 11 ) of correlation measurement device ( 12 ) at distance l with 1× unobstructed width of flow cross-section of the channel carrying the air<l<10× unobstructed width of the flow cross-section of the channel carrying the air in the region of the sensors ( 11 ). A counter electrode ( 13, 25 ) electrically operative relative to electrode ( 10 ) is arranged in upstream of sensors ( 11 ), and electrode ( 10 ) and counter electrode ( 13, 25 ) are connected with different poles of a high-voltage source ( 9 ) configured for providing a voltage U of 12 kV≦U≦20 kV.

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Номер записи: 32

05-03-2015 дата публикации

COAL FLOW DISTRIBUTION CONTROLLERS FOR COAL PULVERIZERS

Номер: US20150059140A1

Автор: Bianca Joseph, Freeman William, III JOHN W., Lin Qingsheng, Rath, Zhang Jilin

Принадлежит:

A solid particle flow distribution controller includes an extension skirt configured to be mounted to a discharge skirt at a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes. The extension skirt includes a plurality of circumferential segments. Each segment is movably mounted to the discharge skirt for movement in an upstream and downstream direction with respect to the discharge skirt. The segments of the extension skirt are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the discharge skirt as needed to improve solid particle distribution among the downstream pipes. 1. A method of retrofitting a solid particle classifier comprising installing a plurality of circumferential skirt segments proximate a discharge skirt in a solid particle classifier , wherein the skirt segments are configured and adapted for motion in an upstream and downstream direction independent of one another relative to the discharge skirt to extend upstream as needed to improve solid particle distribution between outlets of the discharge skirt.2. A method of retrofitting as recited in claim 1 , wherein installing a plurality of circumferential skirt segments includes replacing a portion of the classifier.3. A method of retrofitting as recited in claim 2 , wherein replacing a portion of the classifier includes replacing a discharge turret of the classifier.4. A method of retrofitting as recited in claim 1 , wherein installing a plurality of circumferential skirt segments includes installing components in the classifier through one or more openings selected from the group consisting of a door claim 1 , a slot claim 1 , and a pipe opening. This application is a divisional application of U.S. patent application Ser. No. 13/428,113 filed Mar. 23, 2012, which claims priority to U.S. Provisional Patent Application No. 61/467,239 filed Mar. 24, 2011, each of which is incorporated ...

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Номер записи: 33

20-02-2020 дата публикации

APPARATUS FOR REMOVING MOISTURE FROM PARTICULATE MATERIAL

Номер: US20200056842A1

Автор: ANDERSON Peter, Foss-Smith Patrick

Принадлежит:

Moisture is removed from particulate material using an apparatus comprising a dryer having a drying chamber for directing a flow of gas-entrained particulate material between first and second ends of the drying chamber. The dryer is configured for directing gas under pressure into the drying chamber, for interacting with a flow of gas-entrained particulate material within the drying chamber. The dryer comprises a body of modular construction, which defines a plurality of guide passages arranged for fluid communication between the drying chamber and a source of gas under pressure. The body of modular construction comprises a plurality of discrete annular elements, arranged in series, one adjacent another, each having a body defining a central aperture, and wherein the annular elements are arranged together with the central apertures aligned. 1. Apparatus for removing moisture from particulate material , comprising:a dryer having a drying chamber for directing a flow of gas-entrained particulate material between first and second ends of the drying chamber; and wherein the dryer is configured for directing gas under pressure into the drying chamber and for interacting with a flow of gas-entrained particulate material within the drying chamber;wherein the dryer comprises a body of modular construction, which defines a plurality of guide passages arranged for fluid communication between the drying chamber and a source of gas under pressure;and further wherein the body of modular construction comprises a plurality of discrete annular elements, each having a body defining a central aperture, and wherein the annular elements are arranged together with the central apertures aligned.2. The apparatus of claim 1 , wherein the annular elements are configured to cooperate in one or more pairs claim 1 , one annular element adjacent another claim 1 , so that the central apertures from each pair of the one or more pairs define at least part of a bore of the drying chamber.3. The ...

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Номер записи: 34

27-02-2020 дата публикации

SYSTEM, METHOD AND APPARATUS FOR CONTROLLING THE FLOW DISTRIBUTION OF SOLID PARTICLES

Номер: US20200061628A1

Автор: BIANCA JOSEPH DAVID, CHAPMAN PAUL JOHN

Принадлежит: General Electric Technology GmbH

A turret includes a generally frusto-conical shaped body and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes. 1. A method for controlling the output of coal in a plurality of coal outlet pipes in a coal pulverizer , the method comprising the steps of: a generally frusto-conical shaped body; and', 'a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of sections., 'modifying, or retrofitting, a portion of a coal pulverizer with a turret, the turret comprising2. The method according to claim 1 , wherein:the turret is positioned in an upper portion of the pulverizer above a classifier of the pulverizer and is in fluid communication with the classifier.3. The method according to claim 2 , further comprising the steps of:within the classifier of the pulverizer, generating a swirling flow of coal;within the turret, dividing the swirling flow of coal into a plurality of flows equal in number to the number of sections within the turret; andwithin each of the sections of the turret, straightening the flows of coal.4. The method according to claim 3 , further comprising the step of:transporting the plurality of flows of coal into the plurality of coal outlet pipes associated with each of the section;wherein the plurality of flows of coal are generally vertical through the turret.5. The method according to claim 1 , wherein:the number of straightening vanes is equal to the number of coal outlet pipes in the pulverizer.6. The method according to claim 1 , further comprising the step of:adjusting a height of at least one of the straightening vanes in dependence upon a detected coal flow ...

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Номер записи: 35

24-03-2022 дата публикации

Multi-functional fecal waste and garbage processor and associated methods

Номер: US20220090520A1

Автор: Peter Janicki

Принадлежит: Bill and Melinda Gates Foundation

At least one aspect of the technology provides a self-contained processing facility configured to convert organic, high water-content waste, such as fecal sludge and garbage, into electricity while also generating and collecting potable water.

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Номер записи: 36

24-03-2022 дата публикации

Grateless, Back Drafted and Back Fed Pellet Stove

Номер: US20220090780A1

Автор: Leavitt Frederick Arlen, Spevak Stephen Thomas

Принадлежит:

A system for combusting fuel comprising an apparatus that receives fuel that is characterized as comprising interstitial spacing and wherein oxidants pass through the interstitial spacing of the fuel to sustain a combustion reaction at the interface of a reaction chamber while the byproducts of combustion pass into the reaction chamber. 1. A system for combusting fuel comprising:one or more combustion zones characterized by an interface and a reaction chamber;one or more reserves of fuel, characterized by interstitial spacing that enables the flow of oxidants through the fuel;one or more oxidants; and{'claim-text': ['One or more inlets configured to receive one or more of the fuel or oxidants; and', 'One or more outlets configured to release the fuel and oxidants;'], '#text': 'one or more dispensers comprising:'}wherein one or more of the outlets of the one or more dispensers are in communication with the one or more combustion surfaces;wherein the one or more of the oxidants pass through the interstitial spacing of the one or more reserves of fuel;wherein the one or more reserves of fuel and the one or more oxidants interact at the combustion zone interface to enable combustion; andwherein the byproducts of combustion are carried into a reaction chamber.2. The system of claim 1 , the one or more reserves of fuel claim 1 , wherein the fuel comprises a plurality of substantially uniform units of organic matter or biomass.3. The system of claim 2 , wherein the substantially uniform units of organic matter or biomass are less than or equal to 4 cm in all dimensions.4. The system of claim 2 , wherein the substantially uniform units of organic matter or biomass have been pyrolyzed.5. The system of claim 2 , wherein the organic matter or biomass has been torrefied.6. The system of claim 2 , wherein the substantially uniform units of organic matter or biomass have been thermally exploded.7. The system of further comprising a draft inducer configured to circulate the one or ...

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Номер записи: 37

05-03-2020 дата публикации

PROCESS TO REDUCE EMISSIONS OF NITROGEN OXIDES AND MERCURY FROM COAL-FIRED BOILERS

Номер: US20200071629A1

Автор: Bustard Cynthia Jean, Durham Michael D., Filippelli Gregory M., Morris William J., Senior Constance, Sjostrom Sharon M.

Принадлежит:

A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury. 1) A method of forming a treated combustion feed material comprising:providing a combustion feed material comprising coal; andcontacting the feed material with an additive to form a treated combustion feed material, wherein the additive comprises a nitrogenous material that forms ammonia when combusted and a halogen containing material that forms a gas-phase halogen when combusted.2) The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and an amide and wherein the additive is a free flowing particulate composition having a Psize ranging from about 6 to about 20 mesh (Tyler).3) The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and an amide and wherein the nitrogenous material is supported by a particulate substrate claim 1 , the particulate substrate being one or more of the combustion feed material claim 1 , a zeolite claim 1 , a porous metal silicate material claim 1 , a clay claim 1 , an activated carbon claim 1 , char claim 1 , graphite claim 1 , flyash claim 1 , a metal claim 1 , and a metal oxide.4) The method of claim 1 , wherein the nitrogenous material comprises urea.5) The method of claim 1 , wherein a halogen in the halogen-containing material is one or more of iodine and bromine.6) The method of claim 1 , wherein the nitrogenous material is encapsulated with a coating comprising one or more of a silane claim 1 , siloxane claim 1 , organosilanes claim 1 , amorphous silia to impede thermal degradation and/or decomposition of the nitrogenous material.7) The method of claim 1 , wherein the treated combustion feed material comprises from about 0.05 to about 1 wt. % of the additive with the remainder being the coal and wherein the treated combustion feed material comprises a mass ratio of nitrogen: ...

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Номер записи: 38

05-03-2020 дата публикации

Redesigned Burner

Номер: US20200072458A1

Автор: Partheepan Joshua

Принадлежит:

A steam generator system configured to burn hydrogen and oxygen at stoichiometry along with a high-pressure water and steam. Said steam generator system comprise a hydrogen source, an oxygen source, a nitrogen source, a water source, a steam source, a hydrogen-oxygen handling unit, a cooling unit, a one or more H2-O2 steam generators and a control unit. Said steam generator system is configured to provide said hydrogen source to said hydrogen-oxygen handling unit through an oxygen passage, said oxygen source to said hydrogen-oxygen handling unit through a hydrogen passage, and said nitrogen source to selectively purge said oxygen passage and said hydrogen passage. Said water source provide water to said cooling unit. Said cooling unit is configured to receive said water source and said steam source. 1. A steam generator system configured to burn hydrogen and oxygen at stoichiometry along with a high-pressure water and steam , wherein:said steam generator system comprise a hydrogen source, an oxygen source, a nitrogen source, a water source, a steam source, a hydrogen-oxygen handling unit, a cooling unit, a one or more H2-O2 steam generators and a control unit;said steam generator system is configured to provide said hydrogen source to said hydrogen-oxygen handling unit through an oxygen passage, said oxygen source to said hydrogen-oxygen handling unit through a hydrogen passage, and said nitrogen source to selectively purge said oxygen passage and said hydrogen passage;said water source provide water to said cooling unit;said cooling unit is configured to receive said water source and said steam source; 'to blend portions of said hydrogen source and said oxygen source into a premixed H2-O2, and', 'said hydrogen-oxygen handling unit is configured'}to selectively send portions of said premixed H2-O2 to said one or more H2-O2 steam generators;said cooling unit is configuredto receive and process said water source and said steam source into a cooling steam and said high ...

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Номер записи: 39

05-03-2020 дата публикации

SOLID FUEL BURNER AND COMBUSTION DEVICE

Номер: US20200072461A1

Автор: BABA Akira, Kikuchi Hitoshi, Kitakaze Kosuke, Kuramashi Koji, Mito Shohei, Ochi Kenichi, Taniguchi Hitoshi

Принадлежит: Mitsubishi Hitachi Power Systems, Ltd.

This solid fuel burner is provided with: a venturi tube in which a channel for mixed fluid in a fuel nozzle narrows toward the center in the channel cross section; a fuel concentrator that imparts, to the mixed fluid, a velocity component away from the center of the fuel nozzle; and a channel separation member that separates the channel of the fuel nozzle into an internal side and an external side; wherein the channel separation member is shaped in such a way that the cross sectional area of an external channel is larger at the downstream end than at the upstream end, and the upstream end of the fuel concentrator is located between the upstream end and the downstream end of an expanded portion of the venturi tube. This solid fuel burner prevents solid fuel particles, which is ground biomass fuel, from adhering and depositing inside the nozzle. 1. A solid fuel burner comprising:a fuel nozzle through which a mixed fluid of solid fuel and a carrier gas thereof flows, and is opened toward a furnace;a combustion gas nozzle which is disposed on an outer peripheral side of the fuel nozzle to spray a combustion gas;a venturi provided in the fuel nozzle, in which a flow passage of the mixed fluid in the fuel nozzle is narrowed toward a center in a flow passage cross section;a fuel concentrator which is provided on the center side of the fuel nozzle to impart a velocity component to the mixed fluid in a direction away from the center of the fuel nozzle; anda flow passage partition member configured to partition the flow passage of the fuel nozzle into an inner side and an outer side in the flow passage cross section,wherein the flow passage partition member has a shape in which a cross-sectional area of an outer flow passage is enlarged toward a downstream end rather than an upstream end,the venturi at least has a contraction part in which a cross-sectional area of the flow passage of the mixed fluid is decreased toward the downstream side, and an expansion part disposed on ...

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Номер записи: 40

25-03-2021 дата публикации

Pipe member, gasification combined power generation device, and pipe member assembly method

Номер: US20210087482A1

Автор: Fumihiro Chuman, Masashi Kitada

Принадлежит: Mitsubishi Power Ltd

In order to allow for thermal elongation of a liner, a pipe member, in the interior of which flows a fluid containing solids, is provided with: a tubular outer pipe; a single tubular liner provided inside the outer pipe with a gap therebetween in the radial direction, or a plurality thereof arranged serially in the direction of the pipe axis C; a refractory material filled in between the outer pipe and the liner; a first liner holding member that is provided on an end portion side of the outer pipe, and that holds the liner arranged on the end portion side in a restrained state in the pipe axis C direction and the circumferential direction around the pipe axis C; and a second liner holding member that is provided on an end portion side of the outer pipe, and that holds the liner arranged on the end portion side.

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Номер записи: 41

29-03-2018 дата публикации

Sorbent containing engineered fuel feed stock

Номер: US20180086995A1

Автор: Dingrong Bai, James W. Bohlig, Paula A. Calabrese

Принадлежит: Accordant Energy LLC, Casella Waste Systems Inc

Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, methods of making the fuel feed stocks, methods of producing energy from the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles and contain a sorbent. These feed stocks are useful for a variety of purposes including as gasification and combustion fuels. In addition, one or more sorbents can be added to the feed stocks in order to reduce the amount of a variety of pollutants present in traditional fuel and feed stocks, including, but not limited, sulfur and chlorine. Further, these feed stocks with added sorbent can mitigate corrosion, improve fuel conversion, extend power generating plant lifetime, reduce ash slagging, and reduced operating temperature.

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Номер записи: 42

21-03-2019 дата публикации

Desulfurization system using catalyst for desulfurization

Номер: US20190085255A1

Автор: Cheol Lee

Принадлежит: Individual

Disclosed is a desulfurization system using a catalyst for desulfurization, including a coal feed unit for conveying a combustible substance, a spray unit for spraying a catalyst for desulfurization, a coal pulverization unit for pulverizing the combustible substance conveyed from the coal feed unit, and a combustion unit for combusting the pulverized combustible substance, wherein during transfer of the combustible substance from the coal feed unit to the coal pulverization unit, the catalyst for desulfurization is sprayed using the spray unit and is mixed with the combustible substance. The desulfurization system of the invention can be simply and easily applied to various combustion facilities because, during the transfer of the combustible substance from the coal feed unit to the coal pulverization unit, the catalyst for desulfurization is sprayed and is mixed with the combustible substance, thereby efficiently reducing sulfur oxide (SOx) emission due to combustion of fossil fuel.

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Номер записи: 43

12-05-2022 дата публикации

ONLINE PULVERIZED COAL CONCENTRATION REGULATOR AND REGULATING METHOD

Номер: US20220146097A1

Автор: LI Cenwenda, Li Wei, ZHANG Qi

Принадлежит:

An online pulverized coal concentration regulator is mounted at a front end of a pulverized coal pipe, and a pulverized coal concentration detector is arranged in the pipe. The regulator includes a control system, and an output of the concentration detector is connected with a signal input end of the control system. The regulator includes a top plate, a regulating rod, and a powder baffle plate. A mounting hole for fixedly mounting the front end of the pipe and a through hole for the powder baffle plate to penetrate through are arranged in the top plate, and a connector is arranged between the regulating rod and the powder baffle plate. The regulator includes a guider slidably connected with the powder baffle plate and fixedly connected with the top plate, and a diversion plate arranged on the top plate and slidably connected with the powder baffle plate. 1. An online pulverized coal concentration regulator mounted at a front end of a pulverized coal pipe , a pulverized coal concentration detector and a control system being arranged in the pulverized coal pipe and an output of the pulverized coal concentration detector being electrically connected with a signal input end of the control system , wherein the online pulverized coal concentration regulator further comprises a top plate , a regulating rod , a guider , and a powder baffle plate , wherein:a mounting hole for fixedly mounting the front end of the pulverized coal pipe and a through hole for the powder baffle plate to penetrate through are arranged in the top plate; a connector is arranged between the regulating rod and the powder baffle plate, and two ends of the connector are movably connected with the regulating rod and the powder baffle plate respectively; the guider is slidably connected with the powder baffle plate, and the guider is fixedly connected with the top plate; and a diversion plate is arranged on the top plate, and the diversion plate is slidably connected with the powder baffle plate.2. The ...

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Номер записи: 44

28-03-2019 дата публикации

Sorbents For Coal Combustion

Номер: US20190093883A1

Автор: Comrie Douglas C.

Принадлежит:

Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury. 1. A method for reducing the amount of sulfur gases released into the atmosphere from a coal burning plant , comprising adding a sorbent to the coal prior to combustion; delivering the coal into a furnace; burning the coal in the furnace to produce ash and flue gases; and measuring the level of sulfur gases in the flue gas; wherein the sorbent comprises calcium iodide.2. A method according to claim 1 , wherein the coal is lignite coal.3. A method according to claim 1 , wherein the coal is bituminous coal.4. A method according to claim 1 , wherein the coal is anthracite coal.5. A method according to claim 1 , further comprising controlling the rate of the sorbent addition based on the level of sulfur gases determined in the flue gas.6. A method according to claim 1 , wherein the sorbent comprises at least one of cement kiln dust claim 1 , lime kiln dust claim 1 , and Portland cement.7. A method according to claim 6 , wherein the sorbent further comprises aluminosilicate clay.8. A method for reducing emissions of sulfur and/or other harmful elements arising from combustion of coal in a coal burning facility claim 6 , the method comprising: applying a sorbent composition comprising calcium and iodine onto coal; burning the coal containing the calcium and iodine sorbent composition to produce ash and combustion gases; measuring a level of sulfur in the combustion gases; and adjusting the amount of calcium added onto the coal based on the measured level of sulfur.9. A method according to claim 8 , wherein 90% of the mercury in the coal is captured in the ash to prevent its release into the environment.10. A method according to claim 8 , further comprising measuring a level of mercury in the combustion gases and adjusting the amount of iodine added to the ...

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Номер записи: 45

06-04-2017 дата публикации

IMPROVED FUEL INJECTION ARCHITECTURE

Номер: US20170096946A1

Автор: BENEZECH Philippe Jean René Marie, RIZZO Pascal

Принадлежит:

The invention relates to a turbine engine fuel injection architecture including: two fuel injection manifolds (A, B), each manifold being suitable for dispensing a fuel flow to at least one associated injector; a main fuel-proportioning device () suitable for proportioning a total fuel flow (Q) to be supplied to at least both injection manifolds (A, B); and a distribution proportioning device (), located between the main fuel-proportioning device () and the injection manifolds (A, B) and suitable for distributing at least part of the total fuel flow between both manifolds. The architecture is characterized in that it also includes a bypass valve () suitable for discharging a flow from a first manifold (A, B) to a second manifold (B, A), in the event of excess fuel pressure in the first manifold. The invention also relates to a turbine engine combustion assembly including said architecture. 2. The fuel injection architecture according to claim 1 , wherein the distribution meter is adapted for distributing the portion of the total fuel flow between both manifolds according to a distribution law in which claim 1 , for a flow rate of less than a predetermined threshold flow rate claim 1 , the totality of said flow is issued to the first injection manifold.3. The fuel injection architecture according to claim 2 , wherein the first bypass valve discharges a fuel flow from the first to the second manifold when the pressure in the first manifold is greater than or equal to a pressure attained during the flow in the manifold of the threshold flow rate.4. The fuel injection architecture according to claim 1 , wherein a bypass valve is a hydromechanical overpressure valve.5. The fuel injection architecture according to claim 1 , wherein a bypass valve is of the electromechanical type.6. The fuel injection architecture according to claim 5 , further comprising a processing unit adapted for controlling the valve according to at least one parameter from among the group comprising ...

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Номер записи: 46

04-04-2019 дата публикации

Reducing Mercury Emissions From The Burning Of Coal

Номер: US20190101286A1

Автор: Comrie Douglas C.

Принадлежит:

Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components 1. A method of operating a coal burning facility to reduce emissions of sulfur or other harmful components arising from combustion of coal in a furnace of the facility , comprising:adding a sorbent composition comprising a halogen to the coal;burning coal with the applied sorbent composition to make energy, combustion gas, and ash; andmeasuring a concentration of sulfur in the combustion gas, wherein no sorbent components are added into the combustion gas or in any section of the facility downstream of the furnace during the coal burning.2. The method according to claim 1 , wherein the halogen is bromine.3. The method according to claim 1 , wherein the halogen is iodine.4. The method according to claim 3 , wherein the sorbent composition comprises sodium iodide.5. The method according to claim 3 , wherein the sorbent composition comprises potassium iodide.6. The method according to claim 2 , wherein the sorbent composition comprises calcium bromide.7. The method according to claim 3 , wherein the sorbent composition comprises calcium iodide.8. The method according to claim 1 , wherein the sorbent composition comprises alumina and silica.9. The method according to claim 8 , wherein the sorbent composition comprises an aluminosilicate clay.10. The method according to claim 1 , wherein the sorbent composition comprises cement kiln dust.11. The method according to claim 1 , wherein the sorbent composition comprises a source of calcium and a source of halogen.12. The method according to claim 11 , ...

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Номер записи: 47

04-05-2017 дата публикации

ADJUSTABLE DIVISION PLATE FOR CLASSIFIER COAL FLOW CONTROL

Номер: US20170122558A1

Автор: Rath John, Yaldizli Murat

Принадлежит:

A solid particle distribution controller includes a plurality of division plates proximate a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes. The solid particle distribution controller also includes a plurality of extension plates. Each of the extension plates is movably mounted proximate to a respective division plate for movement in an upstream and downstream direction with respect to the division plate. The plurality of extension plates are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the division plates as needed to improve solid particle distribution among the downstream pipes. 17-. (canceled)8. A method of controlling solid particle flow in each pipe of a solid particle piping system , the method comprising adjusting one or more positions of extension plates of a solid particle flow distribution controller to change solid particle flow and mass flow distribution among a plurality of downstream pipes wherein the solid particle flow distribution controller includes:a plurality of division plates proximate to a division between an upstream solid particle conveyance pipe and a plurality of downstream pipes; anda plurality of extension plates, each of the extension plates movably mounted proximate to a respective division plate for movement in an upstream and downstream direction with respect to the division plate, wherein the plurality of extension plates are configured and adapted for motion in the upstream and downstream direction independent of one another to extend upstream of the division plates as needed to improve solid particle distribution among downstream pipes.9. A method of controlling solid particle flow as recited in claim 8 , wherein the solid particle piping system is a coal piping system claim 8 , wherein the downstream pipes are burner pipes operatively associated with a plurality of coal burners.10. A method of ...

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Номер записи: 48

16-04-2020 дата публикации

VARIABLE ORIFICE FOR PULVERIZED COAL PIPE OF PULVERIZER

Номер: US20200116357A1

Автор: KIM Do Gyun

Принадлежит:

A variable orifice for a pulverized coal pipe of a pulverizer includes a pipe body connected to and installed on a pipeline of the pulverized coal pipe for supplying a pulverized coal from the pulverizer to a boiler and including a diameter expansion portion having a diameter expanded more than a diameter of the pulverized coal pipe; an opening and closing portion installed inside the diameter expansion portion of the pipe body; a rotation actuating portion configured to rotate the inner opening and closing plate and the outer opening and closing plate in mutually different directions; and an opening and closing plate protection member coupled to an inner circumferential surface of each of the inner opening and closing plate and the outer opening and closing plate. 1. A variable orifice for a pulverized coal pipe of a pulverizer comprising:a pipe body connected to and installed on a pipeline of the pulverized coal pipe for supplying a pulverized coal from the pulverizer to a boiler and comprising a diameter expansion portion having a diameter expanded more than a diameter of the pulverized coal pipe;an opening and closing portion installed inside the diameter expansion portion of the pipe body such that a pair of an inner opening and closing plate and an outer opening and closing plate having curved shapes are arranged to face each other and mutually overlapped to be a hemispherical shape as a whole, and the inner opening and closing plate and the outer opening and closing plate are opened together to extend a cross-sectional area of the pipe body or the inner opening and closing plate and the outer opening and closing plate are closed together to reduce the cross-sectional area of the pipe body;a rotation actuating portion configured to rotate the inner opening and closing plate and the outer opening and closing plate in mutually different directions such that the inner opening and closing plate and the outer opening and closing plate are opened or closed together ...

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Номер записи: 49

10-05-2018 дата публикации

PROCESS TO REDUCE EMISSIONS OF NITROGEN OXIDES AND MERCURY FROM COAL-FIRED BOILERS

Номер: US20180127673A1

Автор: Bustard Cynthia Jean, Durham Michael D., Filippelli Gregory M., Morris William J., Senior Constance, Sjostrom Sharon M.

Принадлежит:

A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury. 1. A method , comprising:contacting a combustion feed material with an additive to form a combined combustion feed material, the additive comprising a nitrogenous material; andcombusting the combined combustion feed material to form an off-gas comprising a nitrogen oxide and a derivative of the nitrogenous material, the derivative of the nitrogenous material causing removal of at least a portion of the nitrogen oxide.2. The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and amide claim 1 , wherein the derivative of the nitrogenous material comprises ammonia claim 1 , and wherein the additive is a free flowing particulate composition having a Psize ranging from about 6 to about 20 mesh (Tyler).3. The method of claim 1 , wherein the combustion feed material comprises mercury claim 1 , wherein combustion of the combined combustion feed material volatilizes elemental mercury claim 1 , and wherein the additive comprises a halogen-containing material to oxidize the elemental mercury.4. The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and amide claim 1 , wherein the derivative of the nitrogenous material comprises ammonia claim 1 , and wherein the nitrogenous material is supported by a particulate substrate claim 1 , the particulate substrate being one or more of the combustion feed material claim 1 , a zeolite claim 1 , other porous metal silicate material claim 1 , clay claim 1 , activated carbon claim 1 , char claim 1 , graphite claim 1 , (fly) ash claim 1 , metal claim 1 , and metal oxide.5. The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and amide claim 1 , wherein the derivative of the nitrogenous material comprises ammonia claim 1 , and wherein the ...

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Номер записи: 50

30-04-2020 дата публикации

QUICK-DISCONNECT GAS PIPELINE

Номер: US20200132301A1

Автор: Jenkins Cameron

Принадлежит:

A quick-disconnect gas pipeline comprises a quick-disconnect device (QDD) which comprises a QDD male end and a QDD female end, and a gas hose. The QDD male end is connected to the gas pipeline inside the heating system and the QDD female end is connected to the gas hose outside the heating system. When the heating system is not used, it is easy to disconnect the QDD to prevent people from tripping over the long gas pipeline. 1. A quick-disconnect gas pipeline for a heating system comprising:a quick disconnect device (“QDD”) which comprises a QDD male end and a QDD female end, and a gas hose, whereinsaid QDD male end is connected to the gas pipeline inside the heating system and the QDD female end is connected to the gas hose outside the heating system.2. The quick-disconnect gas pipeline according to claim 1 , wherein said heating system comprises a gas heating stove or gas heating table which comprises a table top claim 1 , a plurality of legs claim 1 , and a heating part claim 1 , wherein one leg of said plurality of legs has a hole through which said gas hose connects to said gas pipeline.3. The quick-disconnect gas pipeline according to claim 1 , wherein said heating system comprises a combustion chamber which comprises a base claim 1 , a table top claim 1 , and a heating part claim 1 , said base comprises four solid plates claim 1 , said four solid plates are connected to a support at each corner claim 1 , and said QDD male end of said quick-disconnect gas pipeline is fixed onto one solid plate of said four solid plates.4. The quick-disconnect pipeline according to claim 2 , wherein when said heating system is not used claim 2 , said gas hose outside said heating system is configured to be disconnected at said QDD.5. The quick-disconnect pipeline according to claim 2 , wherein said gas hose outside said heating system is configured to be connected at said QDD so that said heating system is configured to be connected to an external gas tank.6. The quick- ...

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Номер записи: 51

01-06-2017 дата публикации

METHOD FOR DRYING HIGH MOISTURE, LOW CALORIFIC VALUE LIGNITE FOR A GENERATING SET AND RECOVERING WATER CONTAINED THEREIN AND APPARATUS THEREOF

Номер: US20170153025A1

Автор: DOU Yan, LING Yonggong, SHEN Tao, SHI Jinwen, TAN Yongpeng, Yang Wei, ZHAN Zhongfu, Zhang Yan, ZHAO Xu

Принадлежит:

The present invention relates to a method for drying high moisture, low calorific value lignite for a generating set and recovering water contained therein and an apparatus thereof, which mainly consisting of a rotary steam tube dryer, a washing cooling tower, a coal mill, a st bag filter I, a condenser, a weighing surge bunker, a water ring vacuum pump and so on. In the present invention, a drying system is integrated with a milling system, every dryer and the corresponding coal mill are disposed and are directly connected via a surge bunker, thereby not only saving the heat lost during the transportation of pulverized coal, but also omitting a long-distance transportation from a conventional drying system to a conventional milling system, effectively avoiding such phenomena as dust pollution, waste and spontaneous combustion during transportation and transshipment, simplifying the coal preparation system employed in the front-end process of drying. 1. An apparatus for drying high moisture , low calorific value lignite for a generating set and recovering water contained therein , comprising a rotary steam tube dryer , a washing cooling tower , a coal mill , a 1st bag filter , a 2nd bag filter , a steam condenser , a weighing surge bunker , a water ring vacuum pump , a Venturi jet pump , a wet coal bunker , a nitrogen gas heater and a pulverized coal collecting tank;wherein the input end of the rotary steam tube dryer is connected with the wet coal bunker, the upper portion and the lower portion of the other end thereof is connected with the 1st bag filter and the weighing surge bunker respectively, the upper portion of the 1st bag filter 1st bag filter is connected to the washing cooling tower, the weighing surge bunker is connected to the coal mill, one side of the coal mill is connected to the nitrogen gas heater, the top of the coal mill is connected to the 2nd bag filter, the upper portion of the 2nd bag filter is connected to the washing cooling tower and the ...

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Номер записи: 52

07-06-2018 дата публикации

CLASSIFIER AND METHOD FOR SEPARATING PARTICLES

Номер: US20180154395A1

Автор: COLSON PAUL, CRAFTS Douglas

Принадлежит: General Electric Technology GmbH

A classifier for separating particles is provided. The classifier includes a rotor having a direction of rotation defined by a rotational axis of the rotor, and a plurality of blades disposed on the rotor around the rotational axis. At least one blade of the plurality has a swept orientation in the direction of rotation. The at least one blade is arranged to contact and direct the particles away from the classifier and thereby restrict the particles from concentrating in areas adjacent to the classifier. 1. A classifier for separating particles comprising:a rotor having a direction of rotation defined by a rotational axis of the rotor;a plurality of blades disposed on the rotor around the rotational axis; andwherein at least one blade of the plurality has a swept orientation in the direction of rotation, the at least one blade arranged to contact and direct the particles away from the classifier and thereby restrict the particles from concentrating in areas adjacent to the classifier.2. The classifier of claim 1 , wherein a leading surface of the at least one blade is angled down such that a top edge of the at least one blade leads a bottom edge of the at least one blade along the direction of rotation claim 1 , the top edge and the bottom edge being adjacent to a downstream side of the classifier and an upstream side of the classifier claim 1 , respectively.3. The classifier of claim 1 , wherein the at least one blade has a shaped leading surface.4. The classifier of claim 3 , wherein the shaped leading surface is angled.5. The classifier of claim 3 , wherein the shaped leading surface is curved.6. The classifier of claim 1 , wherein the at least one blade has an adjustable pitch.7. The classifier of claim 1 , wherein the at least one blade has a shaped outer profile having a shape that is at least one of conical claim 1 , semi-cylindrical claim 1 , concaved claim 1 , bell claim 1 , and cup.8. The classifier of claim 1 , wherein the classifier is disposed in a ...

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Номер записи: 53

07-06-2018 дата публикации

SYSTEM AND METHOD FOR PREHEATING A BEATER MILL

Номер: US20180156455A1

Автор: DANIEL RAJKUMAR, KLUGER Frank Michael, RISTIC DRAGISA

Принадлежит: General Electric Technology GmbH

A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill. 1. A method for preheating a beater mill comprising:rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit;generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; andadjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill.2. The method of claim 1 , wherein the controller adjusts at least one of the air supply and the fuel supply of the burner such that the burner generates the burner gas at stoichiometric conditions.3. The method of claim 1 , wherein adjusting at least one of an air supply and a fuel supply to the burner via a controller comprises:adjusting at least one of the air supply and the fuel supply such that ...

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Номер записи: 54

24-06-2021 дата публикации

COMBUSTION SYSTEM COMPRISING AN ANNULAR SHROUD BURNER

Номер: US20210190315A1

Автор: Chiodo Andrew Paul, Davis Kevin, Krimsky Steven Harold, Van Otten Brydger

Принадлежит:

The present disclosure is directed to systems and methods for high flame temperature oxy-combustion that enables the capture of COcost effectively. One part of the presently disclosed subject matter comprises an annular shroud burner which utilizes a supply of undiluted oxygen and minimal flue gas recycle to generate a high flame temperature to maximize efficiency. The annular shroud burner may deliver oxygen into a combustion zone where mixing of the oxygen and a stream of fuel occurs. Flue gas recycled from the exit of the combustion system serves the dual purpose of conveying the coal into the reaction zone, as well as providing local cooling and protection from high incident heat fluxes through the novel shroud cooling design. The annular shroud burner may be configured to produce an axial jet flame that controls the rate of mixing of oxygen and fuel, thereby extending the heat release. Oxygen and coal may be mixed in a ratio such that peak flame temperatures exceed 4,500° F. (2,482° C.) while the flow of recycled flue gas is regulated to control flame temperature and protect burner components and near-burner surfaces. 221-. (canceled) The present disclosure relates to methods and systems for combustion and carbon capture, more particularly, methods and systems involving high flame temperature oxy-combustion of fuel and the efficient capture of carbon dioxide.Fossil fuels are the main source of energy in the world today, particularly in the electrical power generation, industrial and transportation industries. However, due to the large COproduction associated with fossil fuel use, it is also considered by many as a major contributor to global warming. One of these fossil fuels is coal, where the future use of coal as a fuel for power generation and industrial applications depends on new economical technologies being made available to capture and store the COemitted as a product of the combustion process. These carbon capture technologies are commonly referred to ...

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Номер записи: 55

16-06-2016 дата публикации

Coal for boiler fuel

Номер: US20160168496A1

Автор: Keiichi Nakagawa, Masakazu Sakaguchi, Setsuo Omoto, Tsutomu Hamada

Принадлежит: Mitsubishi Heavy Industries Ltd

To provide a coal for a boiler fuel ( 10 ) used as a fuel for a coal-fired boiler, the coal for a boiler fuel comprising a reformed coal ( 10 ) comprising a raw coal ( 2 ) and calcium ion-exchanged on a raw coal ( 2 ). The raw coal ( 2 ) comprises a lignite or a subbituminous coal, and the amount of calcium is an equimolar amount relative to the molar amount of sulfur contained in the raw coal ( 2 ).

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Номер записи: 56

14-06-2018 дата публикации

Fuel supply system

Номер: US20180163966A1

Автор: Daniel J. BICKLEY, David I. Jones, Michael Whiteman

Принадлежит: Rolls Royce PLC

A fuel supply system for fuel injectors of a multi-stage combustor of a gas turbine engine. The fuel supply system includes a metering and splitting arrangement which receives a total fuel flow and controllably meters and splits the received total fuel flow into metered pilot and mains flows. The fuel supply system further includes a de-priming sub-system, one or more fuel lines of a mains fuel distribution pipework being fluidly connected to the mains fuel discharge orifices and extending to the de-priming sub-system, and the de-priming sub-system being configured to remove the mains fuel from the injectors. A re-priming sub-system, the one or more fuel lines of the mains fuel distribution pipework also extending to the re-priming sub-system, and the re-priming sub-system being configured to refill the injectors with mains fuel through the one or more fuel lines when the mains distribution pipework is selected for pilot and mains operation.

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Номер записи: 57

23-06-2016 дата публикации

ADDITION OF CLAY AND SLAG TO COAL-FIRED COMBUSTORS

Номер: US20160177209A1

Автор: Fried Wayne

Принадлежит:

Clay and slag additions are made during coal combustion processes to reduce unwanted emissions such as SO, NOand mercury. The clay additives may include kaolin. The slag additives may include stainless steel slag. The resultant combustion products may be used as cement additives. 1. A method of reducing emissions during coal combustion processes comprising combusting the coal in the presence of a clay additive and a slag additive , wherein the combined weight of the clay additive and the slag additive is at least 8 weight percent of the weight of the coal.2. The method of claim 1 , wherein the clay additive comprises kaolin.3. The method of claim 2 , wherein the kaolin comprises from 2 to 30 weight percent of the coal.4. The method of claim 1 , wherein the slag additive comprises stainless steel slag.5. The method of claim 4 , wherein the stainless steel slag comprises from 2 to 30 weight percent of the coal.6. The method of claim 1 , wherein the clay additive comprises kaolin claim 1 , the slag additive comprises stainless steel slag claim 1 , and the combined total weight of the kaolin and the stainless steel slag comprises from 8 to 50 weight percent of the coal.7. The method of claim 1 , comprising combusting the coal in the presence of limestone in addition to the clay additive and the slag additive.8. The method of claim 7 , wherein the limestone comprises from 0.5 to 3 weight percent of the coal.9. The method of claim 1 , further comprising combusting the coal in the presence of water in addition to the clay additive and the slag additive.10. The method of claim 9 , wherein the water is combined with at least one of the clay additive and the slag additive to form a slurry prior to introduction to a combustion zone of the coal.11. The method of claim 1 , wherein the reduced emissions include at least one gas selected from NOand SO.12. The method of claim 11 , wherein NOemissions are reduced by at least 10 percent.13. The method of claim 11 , wherein ...

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Номер записи: 58

06-06-2019 дата публикации

Coal pulverizing apparatus, control device and control method for same, and coal-fired power plant

Номер: US20190168234A1

Автор: Rikio Inoue

Принадлежит: Mitsubishi Hitachi Power Systems Ltd

A control device for the coal pulverizing apparatus includes a first command value generation part for generating a command value of a first parameter including at least one of rotational speed of the table, pressing force of the roller to the table, or air supply amount in the air supply part, and a second command value generation part for generating a command value of a second parameter including a rotational speed of the rotary classifier. The first command value generation part is configured to determine the command value of the first parameter, based on a first preceding signal determined in accordance with at least load information of a combustion device which burns the pulverized coal from the coal pulverizing apparatus. The second command value generation part determines the command value of the second parameter, based on a second preceding signal determined in accordance with at least the load information.

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Номер записи: 59

09-07-2015 дата публикации

Mineral Additive Blend Compositions and Methods for Operating Waste to Energy Combustors for Improving their Operational Performance and Availability, Protecting Combustor Materials and Equipment, Improving Ash Quality and Avoiding Combustion Problems

Номер: US20150192295A1

Автор: Alexandre Sevagen, Christian Ravagnani, Murielle PERRONNET

Принадлежит: IMERYS CERAMICS FRANCE

Mineral additives and a method for operating a waste-to-energy furnace are provided in order to improve its operational performance and availability, increase the lifetime of the combustor building materials (refractory walls and heat-exchanger metallic tubes) and flue gas treatment equipment, improve ash quality, reduce emissions and avoid combustion problems such as agglomeration, slagging, deposition, and corrosion. A method for operating a waste-to-energy furnace, such as a fluidized bed reactor, pulverized-fuel combustor, grate combustor includes introducing mineral additive into the furnace. The method further includes heating at least a portion of the mineral additive either intimately in contact with the fuel, such that the ability of mineral additive to induce crystallization of the surface of forming ashes is enhanced, or minimizing the contact of the mineral additive with the fuel and the forming ashes, such that the solid-gas reactions between the mineral additive and the volatile compounds in the flue gas are favored and the mineral additive power to capture at least a portion of the inorganic volatile compounds present in the furnace is enhanced.

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Номер записи: 60

26-07-2018 дата публикации

LOW SULFUR COAL ADDITIVE FOR IMPROVED FURNACE OPERATION

Номер: US20180208865A1

Автор: Comer John Philip, Johnson Stephen Allen, Wurster John

Принадлежит:

The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The iron and mineralizers can lower the melting temperature of ash in low-iron, high alkali coals, leading to improved furnace performance. 1. A method of operating a solid fuel fired boiler , comprising:introducing a solid fuel into the boiler, wherein the solid fuel is a low sulfur Western coal;introducing an iron-containing material into the boiler, wherein the iron-containing material is at least one of mill scale from steel production and dust from blast furnace gas cleaning equipment; andat least partially combusting the solid fuel to produce an ash slag, wherein, in the at least partially combusting step, at least one of the following is true:(i) the ash slag has a fluid temperature less than a fluid temperature characteristic of the ash slag produced from combustion of the solid fuel alone; and(ii) the ash slag has a melting point less than the melting point of a second ash slag produced from the combustion of the solid fuel alone.2. The method of claim 1 , wherein the low sulfur Western coal is a Powder River Basin coal and wherein the ash slag has a viscosity during the at least partially combusting step that is less than the viscosity of the second ash slag produced from combustion of the solid fuel alone.3. The method of claim 1 , wherein the low sulfur Western coal has a sulfur content of less than about 1.5 wt. % (dry basis of the coal) and wherein the ash slag has a melting point during the at least partially combusting step that is less than the melting point of the second ash slag produced from combustion of the solid fuel alone.4. The method of claim 1 , wherein at least a portion of the iron-containing material fluxes the ash slag to produce a second ash slag having at least one ...

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Номер записи: 61

26-07-2018 дата публикации

QUICK-DISCONNECT GAS PIPELINE

Номер: US20180209646A1

Автор: Jenkins Cameron

Принадлежит:

A quick-disconnect gas pipeline comprises a quick-disconnect device (QDD) which comprises a QDD male end and a QDD female end, and a gas hose. The QDD male end is connected to the gas pipeline inside the heating system and the QDD female end is connected to the gas hose outside the heating system. When the heating system is not used, it is easy to disconnect the QDD to prevent people from tripping over the long gas pipeline. 1. A quick-disconnect gas pipeline for a heating system comprising:a quick disconnect device (“QDD”) which comprises a QDD male end and a QDD female end, and a gas hose, whereinsaid QDD male end is connected to the gas pipeline inside the heating system and the QDD female end is connected to the gas hose outside the heating system.2. The quick-disconnect gas pipeline according to claim 1 , wherein said heating system comprises a gas heating stove or gas heating table which comprises a table top claim 1 , a plurality of legs claim 1 , and a heating part claim 1 , wherein one leg of said plurality of legs has a hole through which said gas hose connects to said gas pipeline.3. The quick-disconnect gas pipeline according to claim 1 , wherein said heating system comprises a combustion chamber which comprises a base claim 1 , a table top claim 1 , and a heating part claim 1 , said base comprises four solid plates claim 1 , said four solid plates are connected to a support at each corner claim 1 , and said QDD male end of said quick-disconnect gas pipeline is fixed onto one solid plate of said four solid plates.4. The quick-disconnect pipeline according to claim 2 , wherein when said heating system is not used claim 2 , said gas hose outside said heating system is configured to be disconnected at said QDD.5. The quick-disconnect pipeline according to claim 2 , wherein said gas hose outside said heating system is configured to be connected at said QDD so that said heating system is configured to be connected to an external gas tank.6. The quick- ...

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Номер записи: 62

05-08-2021 дата публикации

Sorbents for coal combustion

Номер: US20210239318A1

Автор: Douglas C. Comrie

Принадлежит: Nox II Ltd

Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.

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Номер записи: 63

13-08-2015 дата публикации

Fuel preparation apparatus and method

Номер: US20150226426A1

Автор: Agnieszka Magdalena Kuczynska, Konrad Jerzy Kuczynski

Принадлежит: Doosan Babcock Ltd

An apparatus and method for fuel preparation for example by milling and drying to produce a pulverous fuel supply are described. The apparatus includes a fuel preparation unit adapted to receive a mixture of fuel and a gas and to prepare the fuel for combustion in a pulverous state; an output conduit defining an output flow path for a mixture of pulverous fuel and gas from the fuel preparation unit; a phase separator disposed to receive the mixture from the output conduit and to separate the mixture into a gas phase comprising at least a major part of the gas from the mixture and a fuel phase comprising the pulverous fuel; a gas phase conduit defining a flow path for the gas phase from the separator; a heat exchanger preferably being a process fluid heat exchanger such as a feed water heat recovery heat exchanger fluidly connected to the gas phase conduit and adapted to receive and dry the gas phase. The method applies the principles embodied in the apparatus.

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Номер записи: 64

09-08-2018 дата публикации

METHOD AND ADDITIVE FOR CONTROLLING NITROGEN OXIDE EMISSIONS

Номер: US20180223206A1

Автор: Baldrey Kenneth E., Bisque Ramon, Morris William J., Senior Constance

Принадлежит:

The present disclosure is directed to an additive mixture and method for controlling nitrogen oxide(s) by adding the additive mixture to a feed material prior to combustion. 1. A method for reducing NOemissions in a pulverized coal boiler system , comprising:contacting a feed material with an additive mixture comprising an additive and a thermal stability agent to form an additive-containing feed material, wherein the additive, in the absence of the thermal stability agent, is unstable when the feed material is combusted; andcombusting the additive-containing feed material to produce a contaminated gas stream comprising a contaminant produced by combustion of the feed material and the additive or a derivative thereof, wherein the additive or a derivative thereof removes or causes removal of the contaminant.2. The method of claim 1 , wherein the contaminant is one or more of an acid gas claim 1 , mercury claim 1 , and carbon oxide claim 1 , wherein the additive comprises one or more of a halogen claim 1 , halide claim 1 , nitrogenous material claim 1 , and activated carbon claim 1 , and wherein the thermal stability agent comprises one or more of a metal hydroxide claim 1 , metal carbonate claim 1 , metal bicarbonate claim 1 , and ash.3. The method of claim 2 , wherein the additive comprises a nitrogenous material and wherein the nitrogenous material is one or more of ammonia claim 2 , an amine claim 2 , an amide claim 2 , cyanuric acid claim 2 , and urea.4. The method of claim 3 , wherein the additive further comprises one or more of a stabilizing agent claim 3 , dispersant claim 3 , and binder.5. The method of claim 1 , wherein the thermal stability agent comprises one or more of a metal hydroxide claim 1 , metal carbonate claim 1 , metal bicarbonate claim 1 , metal hydrate claim 1 , and metal nitride.6. The method of claim 1 , wherein the thermal stability agent comprises a porous substrate for supporting the additive and wherein the substrate is one or more of a ...

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Номер записи: 65

09-08-2018 дата публикации

SORBENTS FOR COAL COMBUSTION

Номер: US20180224121A1

Автор: Comrie Douglas C.

Принадлежит:

Sorbent compositions containing halogen and either nitrates or nitrites are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury. 1. A method for reducing emissions of mercury that arise from combustion of mercury-containing fuels , comprising applying a mercury sorbent directly onto the fuel before combustion or directly into a gaseous stream after combustion where the temperature is 1500° F. to 2700° F. , wherein the mercury sorbent comprises a halogen compound and at least one of a nitrate compound and a nitrite compound.2. The method of claim 1 , wherein the mercury sorbent comprises a nitrite compound and a nitrate compound.3. The method of claim 1 , wherein the halogen compound comprises a bromine compound.4. The method of claim 1 , wherein the halogen compound comprises an iodine compound.5. The method of claim 1 , wherein the mercury sorbent comprises a source of calcium.6. The method of claim 1 , wherein the mercury sorbent comprises calcium bromide claim 1 , calcium iodide claim 1 , calcium nitrate claim 1 , or calcium nitrite.7. The method of claim 1 , further comprising applying a calcium containing sulfur sorbent directly onto the fuel before combustion or directly into a gaseous stream after combustion where the temperature is 1500° F. to 2700° F.8. The method of claim 7 , wherein the sulfur sorbent comprises calcium oxide claim 7 , calcium hydroxide claim 7 , calcium carbonate claim 7 , calcium bicarbonate claim 7 , calcium nitrate claim 7 , calcium nitrite claim 7 , calcium acetate claim 7 , calcium citrate claim 7 , calcium phosphate claim 7 , calcium hydrogen phosphate claim 7 , apatite claim 7 , calcium alkoxylates claim 7 , or organocalcium compounds.9. The method of claim 7 , wherein the sulfur sorbent comprises cement kiln dust claim 7 , lime kiln dust claim 7 , or portland cement.10. The method of claim 7 , wherein the sulfur sorbent ...

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Номер записи: 66

16-08-2018 дата публикации

HOPPER SYSTEM

Номер: US20180231247A1

Автор: Miller Blaine

Принадлежит:

A fuel material processing system includes a hopper assembly configured to receive a fuel material. A drying system is configured to remove moisture from the fuel material to generate a dried fuel material. A material delivery system is configured to provide the dried fuel material to a combustion system. 1. A fuel material processing system comprising:a hopper assembly configured to receive a fuel material;a drying system configured to remove moisture from the fuel material to generate a dried fuel material; anda material delivery system configured to provide the dried fuel material to a combustion system.2. The fuel material processing system of wherein the combustion system includes a boiler system.3. The fuel material processing system of wherein the hopper system is configured to direct the dried fuel material toward the material delivery system.4. The fuel material processing system of wherein the material delivery system includes an auger system.5. The fuel material processing system of wherein the material delivery system includes a conveyer system.6. The fuel material processing system of wherein the drying system includes:an air supply system configured to move drying air through the fuel material.7. The fuel material processing system of wherein the air supply system includes:a fan assembly configured to provide the drying air.8. The fuel material processing system of wherein the drying system further includes:a drying air heating system configured to heat the drying air.9. The fuel material processing system of wherein the drying air heating system includes:a heat exchanger system configured to recover at least a portion of the waste heat generated by the combustion system.10. The fuel material processing system of wherein the hopper system includes:a perforated portion that is configured to allow for the passage of the drying air.11. The fuel material processing system of wherein the perforated portion of the hopper system is positioned proximate a ...

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Номер записи: 67

31-08-2017 дата публикации

SYSTEM, METHOD AND APPARATUS FOR CONTROLLING THE FLOW DISTRIBUTION OF SOLID PARTICLES

Номер: US20170246642A1

Автор: BIANCA JOSEPH DAVID, CHAPMAN PAUL JOHN

Принадлежит: General Electric Technology GmbH

A deflector ring includes a generally annular body, and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the annular body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a turret positionable above the deflector ring. 1. A deflector ring for a pulverizer , comprising:a generally annular body; anda plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of sections;wherein the vanes are configured to straighten a swirling flow of solid particles as they enter the annular body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a turret positionable above the deflector ring.2. The deflector ring of claim 1 , wherein:the number of straightening vanes is equal to the number of coal outlet pipes in the pulverizer.3. The deflector ring of claim 2 , wherein:each of the straightening vanes is selectively extendable and retractable in a vertical direction for adjusting a height of each of the vanes.4. The deflector ring of claim 3 , wherein:the height of each straightening vane is designed to be individually adjusted.5. The deflector ring of claim 4 , wherein:each of the straightening vanes includes three segments;wherein in an extended position the height of a respective vane is substantially equal to a combined height of the three segments; andwherein in a retracted position the height of a respective vane is substantially equal to a height of a single segment.6. The deflector ring of claim 1 , wherein:a feed pipe extends through the annular body, the feed pipe and the annular body being substantially concentric;wherein each of the straightening vanes extends radially from the feed pipe to an inner peripheral wall of the annular body.7 ...

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Номер записи: 68

31-08-2017 дата публикации

SYSTEM, METHOD AND APPARATUS FOR CONTROLLING THE FLOW DISTRIBUTION OF SOLID PARTICLES

Номер: US20170246643A1

Автор: BIANCA JOSEPH DAVID, CHAPMAN PAUL JOHN

Принадлежит:

A turret includes a generally frusto-conical shaped body and a plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of substantially equal sections. The vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes. 1. A turret for a pulverizer , comprising:a generally frusto-conical shaped body; anda plurality of static straightening vanes arranged interior to the body, the vanes dividing the body into a plurality of sections;wherein the vanes are configured to straighten a swirling flow of solid particles as they enter the body, and to divide the swirling flow into a plurality of straightened flows that are communicated to a plurality of coal outlet pipes.2. The turret of claim 1 , wherein:the number of straightening vanes is equal to the number of coal outlet pipes in the pulverizer.3. The turret of claim 2 , wherein:each of the straightening vanes is selectively extendable and retractable in a vertical direction for adjusting a height of each of the vanes.4. The turret of claim 3 , wherein:the height of each straightening vane is designed to be individually adjusted.5. The turret of claim 4 , wherein:each of the straightening vanes includes four segments;wherein in an extended position the height of a respective vane is substantially equal to a combined height of the four segments; andwherein in a retracted position the height of a respective vane is substantially equal to a height of a single segment.6. The turret of claim 1 , wherein:a feed pipe extends through the body, the feed pipe and the body being substantially concentric;wherein each of the straightening vanes extends radially from the feed pipe to an inner peripheral wall of the body.7. The turret of claim 2 , wherein:the plurality of straightening vanes is seven straightening vanes ...

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Номер записи: 69

30-07-2020 дата публикации

SORBENTS FOR COAL COMBUSTION

Номер: US20200240632A1

Автор: Comrie Douglas C.

Принадлежит: NOx II, Ltd.

Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury. 1. A method for reducing mercury and sulfur released into the atmosphere from burning coal , comprising:adding a mercury sorbent comprising a halogen and a sulfur sorbent comprising calcium to coal prior to combustion;delivering the coal into a furnace;combusting the coal in the furnace to produce ash and flue gas;removing ash from the flue gas by capturing the ash in a particulate removal system disposed in a convective pathway downstream of the furnace, wherein the captured ash comprises oxidized mercury formed in the furnace or in the convective pathway downstream of the furnace; andmeasuring at least one of a level of sulfur gases in the flue gas or a level of mercury gases in the flue gas.2. The method of claim 1 , wherein the captured ash contains about 90% or more by weight of the mercury present in the coal prior to the combusting to prevent its release into the environment.3. The method of claim 1 , wherein the mercury sorbent is applied onto the coal at a coal producer.4. The method of claim 1 , wherein the adding of the mercury sorbent is at about 0.01 to about 10% by weight of mercury sorbent based on an amount of coal being consumed.5. The method of claim 1 , wherein the adding of the mercury sorbent is at about 0.01 to about 5% by weight of mercury sorbent based on an amount of coal being consumed.6. The method of claim 1 , wherein the adding of the sulfur sorbent is at about 1 to 9% by weight of sulfur sorbent based on an amount of coal being consumed.7. The method of claim 1 , wherein the mercury sorbent is an aqueous solution of calcium bromide.8. The method of claim 1 , wherein the mercury sorbent comprises a bromine compound or an iodine compound.9. The method of claim 1 , wherein the mercury sorbent comprises an organic bromine ...

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Номер записи: 70

30-07-2020 дата публикации

SYSTEM AND METHOD FOR PREHEATING A BEATER MILL

Номер: US20200240633A1

Автор: DANIEL RAJKUMAR, KLUGER Frank Michael, RISTIC DRAGISA

Принадлежит: General Electric Technology GmbH

A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill. 1. A method for preheating a beater mill comprising:rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit;generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace, wherein the gas stream circulating through the beater mill and the furnace is powered by the beater wheel; andadjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill.2. The method of claim 1 , wherein the controller adjusts at least one of the air supply and the fuel supply of the burner such that the burner generates the burner gas at stoichiometric conditions.3. The method of claim 1 , wherein adjusting at least one of an air supply and a fuel supply to ...

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Номер записи: 71

27-11-2014 дата публикации

Back mixing device for pneumatic conveying systems

Номер: US20140348598A1

Автор: Thomas Frederick Leininger

Принадлежит: General Electric Co

The present application provides a back mixing device for use with a pneumatically conveyed flow of solids having a varying flow rate. The back mixing device may include a nozzle, a chamber in communication with the nozzle, and an exit. The chamber may include an expanded area leading to a restriction such that the chamber creates a recirculation pattern in the flow of solids so as to smooth the varying flow rate though the back mixing device.

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Номер записи: 72

06-08-2020 дата публикации

REDUCING MERCURY EMISSIONS FROM THE BURNING OF COAL BY REMOTE SORBENT ADDITION

Номер: US20200248902A1

Автор: Comrie Douglas C.

Принадлежит: NOx II, Ltd.

Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components 1. A method of preparing coal for a coal burning facility to reduce emissions of mercury or other harmful components arising from combustion of coal in a furnace of the facility , comprising:transporting a treated coal having an applied sorbent composition comprising a halogen to the coal burning facility, wherein the treated coal is delivered to and combusted in the furnace to make energy, combustion gas, and ash, wherein the treated coal reduces an amount of mercury in the combustion gas as compared to mercury present in a combustion gas when coal is combusted without the applied sorbent composition.2. The method according to claim 1 , wherein the transporting is via a rail car.3. The method according to claim 1 , wherein prior to the transporting claim 1 , the applied sorbent composition is applied to the coal on a belt or conveyor.4. The method according to claim 1 , wherein prior to the transporting claim 1 , the applied sorbent composition is applied to the coal prior to or during processing in a crusher.5. The method according to claim 1 , wherein prior to the transporting claim 1 , processing the coal in a pug mill claim 1 , wherein the applied sorbent composition is applied to the coal prior to or during the processing the coal in the pug mill.6. The method according to claim 1 , wherein the applied sorbent composition is applied to the coal as a liquid comprising calcium bromide.7. The method according to claim 1 , further comprising measuring a concentration of mercury in the combustion ...

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Номер записи: 73

22-08-2019 дата публикации

Combustion chamber comprising two types of injectors in which the sealing members have a different opening threshold

Номер: US20190257251A1

Автор: Christophe Chabaille, Guillaume Aurelien Godel, Thomas Olivier Marie Noel

Принадлежит: Safran Aircraft Engines SAS

The invention relates to a combustion chamber for a turbomachine. The combustion chamber comprises at least one spark plug, at least one fuel injector of a first type of injector that is located facing the spark plug, and at least one fuel injector of a second type. Each fuel injector comprises a mobile sealing member that is configured to open when the fuel pressure exceeds an opening threshold. The opening threshold of the mobile sealing member of the injector of the first type is strictly less than the opening threshold of the mobile sealing member of the injector of the second type.

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Номер записи: 74

22-08-2019 дата публикации

SYSTEM AND METHOD FOR OPERATING A COMBUSTION CHAMBER

Номер: US20190257519A1

Автор: HUANG Dayu, MURPHY ROBERT FREDERICK, SHI XIAOLEINMN, Tu Jilin, Yang Shizhong

Принадлежит: General Electric Technology GmbH

A method for operating a combustion chamber is provided. The method includes obtaining a carbon monoxide reading at an exit of the combustion chamber via a carbon monoxide sensor, and deriving an oxygen set point trim based at least in part on the carbon monoxide reading and a carbon monoxide set point via a controller. The method further includes determining a stability status of the combustion chamber via a combustion stability sensor, and adjusting an oxygen set point of the combustion chamber with the oxygen set point trim based at least in part on the stability status via the controller. The oxygen set point defines a desired oxygen level at the exit of the combustion chamber. 1. A method for operating a combustion chamber comprising:obtaining a carbon monoxide reading at an exit of the combustion chamber via a carbon monoxide sensor;deriving an oxygen set point trim based at least in part on the carbon monoxide reading and a carbon monoxide set point via a controller;determining a stability status of the combustion chamber via a combustion stability sensor; andadjusting an oxygen set point of the combustion chamber with the oxygen set point trim based at least in part on the stability status via the controller, the oxygen set point defining a desired oxygen level at the exit of the combustion chamber.2. The method of claim 1 , wherein the combustion stability sensor is a flame stability sensor and the stability status is a flame status.3. The method of claim 2 , wherein the flame status indicates that a flame is present within the combustion chamber.4. The method of further comprising:obtaining a nitrogen oxide reading at the exit of the combustion chamber via a nitrogen oxide sensor;deriving a stoichiometry set point trim based at least in part on the nitrogen oxide reading and a nitrogen oxide set point via the controller; andadjusting a stoichiometry set point with the stoichiometry set point trim based at least in part on the carbon monoxide reading via ...

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Номер записи: 75

04-11-2021 дата публикации

PELLET-FIRED COOKING APPARATUS

Номер: US20210338009A1

Автор: Kirvan Colin, Witzel Terry

Принадлежит:

A cooking apparatus, having a body defining an interior cooking chamber for cooking food, a pellet supply portion coupled to the body and including a hopper for storing fuel, a combustion chamber for burning the fuel and heating the cooking chamber, a feeding mechanism for supplying fuel from the hopper to the combustion chamber, and a removable collection receptacle located below the combustion chamber. The apparatus also includes an ash-shaker located between the collection receptacle and the combustion chamber, the ash-shaker including an external actuator that controls one or more moving elements located in the combustion chamber, wherein movement of the moving elements encourages unburned debris in the combustion chamber to fall into the receptacle, after which the collection receptacle can be removed and the unburned debris discarded. 1. A cooking apparatus , comprising:a body defining an interior cooking chamber for cooking food;a pellet supply portion coupled to the body and including a hopper for storing fuel;a combustion chamber for burning the fuel and heating the cooking chamber;a feeding mechanism for supplying fuel from the hopper to the combustion chamber;a removable collection receptacle located below the combustion chamber; andan ash-shaker located between the collection receptacle and the combustion chamber, the ash-shaker including an external actuator that controls one or more moving elements located in the combustion chamber, wherein movement of the moving elements encourages unburned debris in the combustion chamber to fall into the receptacle, after which the collection receptacle can be removed and the unburned debris discarded.2. The cooking apparatus of claim 1 , wherein the actuator is sized and shaped to be moved by hand.3. The cooking apparatus of claim 1 , wherein the actuator is sized and shaped to be moved using a tool.4. The cooking apparatus of claim 1 , wherein the moving element include a circular plate with one or more holes.5. ...

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Номер записи: 76

04-11-2021 дата публикации

Combustion apparatus

Номер: US20210341143A1

Автор: Glenn Harris, Michael Harris, Michael Harris, Jr.

Принадлежит: Harris Multi Jet Burner Ltd

Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proximate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.

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Номер записи: 77

04-11-2021 дата публикации

HOPPER CLEANOUT AND PELLET HANDLING MECHANISM

Номер: US20210341144A1

Автор: ABDALLAH SLEIMAN, Corso Dan, Gillespie Brad, HAMILTON ANTHONY, PARSONS MICHAEL, RAHMANI RAMIN KHOSRAVI

Принадлежит:

A system having a hopper that receives fuel pellets and direct the pellets under gravity feed to an auger that moves the pellets into a firepot inside a cooking chamber of a grill. The system includes a door below the auger that has a closed position that retains fuel pellets in the auger such that the fuel pellets feed to the auger, and has an opened position to allows the pellets to empty from the hopper and away from the auger. A closing mechanism allows a user to selectively open or close the door. 1. A system comprising:a hopper that receives fuel pellets and direct the pellets under gravity feed to an auger that moves the pellets into a firepot inside a cooking chamber of a grill;a door below the auger that has a closed position that retains fuel pellets in the auger such that the fuel pellets feed to the auger, and that has an opened position to allows the pellets to empty from the hopper and away from the auger;a closing mechanism that allows a user to selectively open or close the door.2. The system of claim 1 , wherein the door is affixed in place via a hinge in parallel with the auger claim 1 , and the door spans a distance from the hinge to the auger when the door is in the closed position.3. The system of claim 2 , wherein the door is held in the closed position by an arm in contact with the door claim 2 , the arm being affixed to a handle that can be pulled by a user to release the door from the closed position.4. The system of claim 3 , wherein the hinge is spring loaded to biased the door toward the open position.5. The system of claim 4 , wherein the arm is biased to a retracted position such that the door is moved to the closed position when the arm is released.6. The system of claim 1 , further comprising a chute below the door that directs fuel pellets from coming through the door in the open position into a receptacle.7. The system of claim 6 , wherein the door is directly above the receptacle and at least a portion of the chute allows the fuel ...

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Номер записи: 78

12-09-2019 дата публикации

Solenoid Operated Valve for Reducing Excessive Piping Pressure in a Fluid Distribution System

Номер: US20190277496A1

Автор: Hawkins James C.

Принадлежит:

An assembly for reducing excess piping pressure in a fluid distribution system. The assembly includes a fluid regulator including a body defining an inlet, an outlet, and a fluid passageway between the inlet and the outlet, a first control element movable relative to a valve seat in the fluid passageway to control fluid flow therethrough, a valve stem coupled to the first control element, and an actuator assembly operatively coupled to the valve stem to control a position of the first control element. The assembly also includes a solenoid valve coupled to the fluid regulator at a position upstream of the outlet, the solenoid valve adapted to receive a control signal indicative of zero demand downstream of the fluid regulator, and having a second control element that is movable, responsive to the control signal, from a first position to a second position to reduce fluid flowing through the fluid passageway. 1. An assembly for reducing excess piping pressure in a fluid distribution system , the assembly comprising: a regulator body defining a first inlet, a first outlet, and a first fluid passageway between the first inlet and the outlet;', 'a first valve seat disposed in the first fluid passageway;', 'a first control element movable relative to the first valve seat to control fluid flow through the first fluid passageway;', 'a first valve stem coupled to the first control element; and', 'an actuator assembly operatively coupled to the first valve stem to control a position of the first control element; and, 'a fluid regulator, comprisinga solenoid valve coupled to the fluid regulator at a position upstream of the first outlet of the regulator body, the solenoid valve adapted to receive a control signal indicative of zero demand downstream of the fluid regulator, the solenoid valve having a second control element that is movable, responsive to the control signal, from a first position to a second position to reduce fluid flowing through the first fluid passageway.2. ...

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Номер записи: 79

22-10-2015 дата публикации

Combustion boiler with pre-drying fuel chute

Номер: US20150300636A1

Автор: Daniel R. Higgins, Eugene Sullivan

Принадлежит: Daniel R. Higgins, Eugene Sullivan

A solid fuel boiler with one or more fuel chutes configured to pre-dry wet solid fuel prior to loading into a combustion chamber of the boiler, enabling higher thermal efficiencies and burning less fuel to produce the same steam quantity. The pre-drying fuel chutes pass through the boiler where hot combustion gases radiantly and convectively—heat the chute walls to dry the wet solid fuel by radiant, convective, and/or conductive heating. Agitator mechanisms or structures within the chute mix the fuel for uniform heating, break up clumps of wet fuel, regulate the speed of falling fuel, prevent sticking, dry the fuel by means of steam and/or hot air, transport and deliver a cooling medium while a chute is offline in an operating boiler, and suppress fire using steam injection. Fuel from the chute can flow into a fuel storage bin or directly into the combustion zone of the furnace.

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Номер записи: 80

13-10-2016 дата публикации

POWER GENERATING METHOD OF CARBON-MOLECULE GASIFICATION COMBUSTION BOILER

Номер: US20160298040A1

Автор: Chen Junli, CHEN Kebin, CHEN Kezheng, Chen Tao, Zhang Jian

Принадлежит:

A power generating method of Carbon-molecule gasification combustion, the method comprising the following main processes: taking coal with desulfurizing agent, and first conducting desulfirization and gasification in a molecular gasifier to produce clean coal gas; mixing hot coal gas and low excess air for combustion in the furnace of a boiler; conducting coke refining and dust removal in accordance with coal quality and demand; after heat transfer via the heated surface of the boiler, emitting high temperature flue gas complying with the standard from the chimney; and the vapor generated by the boiler drives a steam turbine to generate power. The gasification method can be applied to a power generating system of a gas engine and a gas turbine to produce desired cooling coal gas, and can also produce chemical feed gas. The method has a simple process, which is energy saving. 1. A power generating method of Carbon-molecule gasification combustion , the method comprising the following main steps:step 1: adding a desulfurizing agent to coal, and conducting desulfiurization and gasification in a molecular gasifier to produce a hot coal gas and a coke dust wherein;the structure of the molecular gasifier is designed so that inside the gasifier the complete oxidization of a thick bed with a large interface designed in the molecular level matches the positive reduction reaction of a thick bed with a small cross section;the molecular gasifier can desulfurize the coal in the absence of the oxygen where the ratio between Ca and S in the desulfurizing agent approaches 1; 'wherein, depending the change of temperature measured on the temperature measurement point, an adjustment can be effected by means of steam to ensure a complete oxidation of the thin bed with a large interface matching the positive reduction of the thick bed with a small cross section steadily operate;', 'the molecular gasifier is provided with a regional adjusting means comprising an annular temperature ...

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Номер записи: 81

12-10-2017 дата публикации

SORBENTS FOR COAL COMBUSTION

Номер: US20170292700A1

Автор: Comrie Douglas C.

Принадлежит:

Sorbent compositions containing iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury. 1. A method for burning coal in a furnace to reduce emissions of mercury from a coal burning facility , the method comprising:adding a mercury sorbent composition onto the coal upstream of the furnace, into the flue gases in a plant section of the facility downstream of the furnace, or in a combination of upstream and downstream additions;adding a sulfur sorbent composition onto the coal upstream of the furnace, into the flue gases in a plant section of the facility downstream of the furnace, or in a combination of upstream and downstream additions;combusting the coal in the furnace;measuring the level of mercury present in the flue downstream from the addition of sorbent compositions; andif the measured mercury level is above a target level, increasing a rate of addition of the mercury sorbent composition; orif the measured mercury level is below a target level, decreasing a rate of addition of at least one of the components or leaving the rate of addition unchanged, wherein the mercury sorbent composition comprises a halogen compound and the sulfur sorbent composition comprises silica and alumina.2. The method of claim 1 , wherein the sulfur sorbent composition comprises more than 2% by weight silica and greater than 2% by weight alumina.3. The method of claim 1 , wherein the sulfur sorbent composition comprises an aluminosilicate clay.4. The method of claim 3 , wherein the aluminosilicate clay is montmorillonite or kaolin.5. The method of comprising adding the sulfur sorbent downstream of the furnace in a region having a temperature of 1500-2700° F.6. The method of comprising adding the mercury sorbent downstream of the furnace in a region having a temperature of 1500-2700° F.7. The method of wherein the mercury sorbent composition comprises an iodine compound ...

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Номер записи: 82

10-09-2020 дата публикации

PELLET-FIRED COOKING APPARATUS

Номер: US20200281402A1

Автор: Kirvan Colin, Witzel Terry

Принадлежит:

A cooking apparatus, having a body defining an interior cooking chamber for cooking food, a pellet supply portion coupled to the body and including a hopper for storing fuel, a combustion chamber for burning the fuel and heating the cooking chamber, a feeding mechanism for supplying fuel from the hopper to the combustion chamber, and a removable collection receptacle located below the combustion chamber. The apparatus also includes an ash-shaker located between the collection receptacle and the combustion chamber, the ash-shaker including an external actuator that controls one or more moving elements located in the combustion chamber, wherein movement of the moving elements encourages unburned debris in the combustion chamber to fall into the receptacle, after which the collection receptacle can be removed and the unburned debris discarded. 1. A cooking apparatus , comprising:a body defining an interior cooking chamber for cooking food;a pellet supply portion coupled to the body and including a hopper for storing fuel;a combustion chamber for burning the fuel and heating the cooking chamber;a feeding mechanism for supplying fuel from the hopper to the combustion chamber;a removable collection receptacle located below the combustion chamber; andan ash-shaker located between the collection receptacle and the combustion chamber, the ash-shaker including an external actuator that controls one or more moving elements located in the combustion chamber, wherein movement of the moving elements encourages unburned debris in the combustion chamber to fall into the receptacle, after which the collection receptacle can be removed and the unburned debris discarded.2. The cooking apparatus of claim 1 , wherein the actuator is sized and shaped to be moved by hand.3. The cooking apparatus of claim 1 , wherein the actuator is sized and shaped to be moved using a tool.4. The cooking apparatus of claim 1 , wherein the moving element include a circular plate with one or more holes.5. ...

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Номер записи: 83

29-10-2015 дата публикации

Method and Apparatus for Controlling and Regulating Flow of Fuel Oil in Heating Systems

Номер: US20150308714A1

Автор: Itzhaky Itzhak M.

Принадлежит:

A fuel oil burner for a heating system includes a nozzle having an inlet and outlet, and an electric solenoid valve having an inlet for receiving pressurized fuel oil from a fuel supply system and an outlet in communication with the inlet of the nozzle. The valve is configured to prevent flow of fuel oil through the valve to the nozzle in a closed state and to permit flow of fuel oil through the valve to the nozzle in an open state. A controller in communication with the valve is configured to intermittently switch the valve between the closed state and the open state at predetermined time periods so that pulses of fuel oil exit the outlet of the nozzle. The valve is intermittently in the closed state a time period so that the pulses of fuel oil exiting the outlet of the nozzle self-sustain a flame. 1. A fuel oil burner for a heating system , said fuel oil burner comprising , in combination:a nozzle having an inlet and outlet and configured to atomize fuel oil;an electric solenoid valve having an inlet for fluid-flow communication with a pressurized source of fuel oil and an outlet in fluid-flow communication with the inlet of the nozzle;wherein said electric solenoid valve is configured so that flow of fuel oil from the inlet of the electric solenoid valve to the inlet of the nozzle is prevented in a closed state of the electric solenoid valve and fuel oil flows from the inlet of the electric solenoid valve to the inlet of the nozzle in an open state of the electric solenoid valve;a controller in electrical communication with the electric solenoid valve and configured to intermittently change the valve between the closed state and the open state at predetermined time periods so that pulses of fuel oil exit the outlet of the nozzle; andwherein the electric solenoid valve is intermittently in the closed state a time period so that the pulses of fuel oil exiting the outlet of the nozzle self-sustain a flame.2. The heating system according to claim 1 , wherein the ...

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Номер записи: 84

17-09-2020 дата публикации

COMBUSTION SYSTEM WITH WIDE TURNDOWN COAL BURNER

Номер: US20200292167A1

Автор: Schindler Ed

Принадлежит:

A combustion system for a coal fired furnace having a windbox includes a source of a mixture of pulverized coal and air, and a splitter that receives the mixture and splits it into first and second mixed streams. A first nozzle receives the first mixed stream and discharges it into the furnace. A separator receives the second mixed stream and separates it into an air stream and a coal rich stream. An air conduit connected between the separator and the source of the mixture causes at least some of the air stream to be fed back into the mixture. A second nozzle receives the coal rich stream and discharges it into the furnace. A third nozzle receives support air from the windbox and discharges it into the furnace in a combustion supporting relationship with respect to the coal rich stream.

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Номер записи: 85

12-11-2015 дата публикации

Vertical Pulverizing Apparatus

Номер: US20150321197A1

Автор: AIZAWA TAKASHI, KANEMOTO Hiroaki, MITSUI Hideo, Takeno Yutaka, TATSUMA Teruaki

Принадлежит:

Provided is a vertical pulverizing apparatus capable of suppressing abrasion of throat vanes () and elongating their abrasion resistant lives to thereby increase working efficiency. The vertical pulverizing apparatus is characterized in that: a throat () is provided between a housing () and a pulverizing table () and has an annular flow channel which is surrounded by a throat inner peripheral wall () and a throat outer peripheral wall () and which is partitioned by a large number of throat vanes (); and a slope part () extending diagonally downward from an inner peripheral wall surface of the housing () toward a top end of the throat outer peripheral wall () and a horizontal part () extending from a bottom end of the slope part () continuously to the top end of the throat outer peripheral wall () are provided so that top end surfaces () of the throat vanes () and a top surface of the horizontal part () can be set at the same height. 1. A vertical pulverizing apparatus comprising: a housing; a pulverizing table which is placed rotatably inside the housing; a pulverizer which is disposed on the pulverizing table; a throat which is disposed between the housing and the pulverizing table; a wind box which is placed under the throat; and a conveying gas feeding unit which feeds pulverized particle conveying gas to the wind box , the throat having an annular flow channel which is surrounded by a throat inner peripheral wall and a throat outer peripheral wall and which is configured to be partitioned by a large number of throat vanes circumferentially at predetermined intervals so that a solid raw material can be pulverized to produce pulverized particles by meshing of the pulverizing table with the pulverizer , and the conveying gas fed from the conveying gas feeding unit to the wind box can be jetted to an outer peripheral part of the pulverizing table through the throat so as to convey the pulverized particles to above the pulverizing table; wherein:a slope part ...

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Номер записи: 86

10-11-2016 дата публикации

REDUCING MERCURY EMISSIONS FROM THE BURNING OF COAL

Номер: US20160327265A1

Автор: Comrie Douglas C.

Принадлежит: NOx II, Ltd.

Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components 1. A method for preventing release of mercury into the atmosphere from combustion of coal , comprising delivering coal into a furnace at a coal feed , combusting the coal in the furnace , and adding sorbent components into the furnace during combustion , wherein the components comprise iodine , silica , and alumina.2. The method according to claim 1 , wherein the sorbent components are added in the furnace at a location above the coal feed.3. The method according to claim 2 , wherein the components comprise an alkali metal iodide.4. The method according to claim 2 , wherein the components comprise an aluminosilicate clay.5. The method according to claim 3 , wherein the components further comprise an aluminosilicate material.6. The method according to claim 5 , wherein the aluminosilicate material is selected from kaolin claim 5 , metakaolin claim 5 , and montmorillonite.7. The method according to claim 5 , wherein the aluminosilicate material comprises kaolin.8. The method according to claim 5 , wherein the aluminosilicate material comprises metakaolin.9. The method according to claim 1 , wherein the furnace has overfire air ports twenty feet or higher above the coal feed claim 1 , and the sorbent components are added above the overfire air ports.10. The method according to claim 9 , wherein the components comprise an alkali metal iodide.11. The method according to claim 9 , wherein the components comprise an aluminosilicate clay.12. The method according to claim 10 , wherein the components further ...

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Номер записи: 87

24-11-2016 дата публикации

Self Torrefied Pellet Stove

Номер: US20160341423A1

Автор: Johnson Geoffrey W.A.

Принадлежит:

A pellet stove, having a pellet hopper, a combustion chamber, a heat exchanger and a pellet movement assembly, adapted to move the pellets from the hopper into the combustion chamber. The pellet movement assembly is located and configured so as to be heated by exhaust gases from the combustion chamber and the pellets spend a sufficient amount of time in the pellet movement assembly, where oxygen is prevented from freely flowing in, so that the pellets are torrefied during transit to the combustion chamber. 1. A pellet stove , comprising:a. a pellet hopper;b. a combustion chamber;c. a pellet movement assembly, adapted to move said pellets from said hopper into said combustion chamber; andd. wherein said pellet movement assembly is located and configured so as to be heated by exhaust gasses from said combustion chamber and wherein said pellets spend a sufficient amount of time in said pellet movement assembly, and wherein oxygen is prevented from freely flowing into said pellet movement assembly, so that said pellets are torrefied during transit to said combustion chamber.2. The pellet stove of claim 1 , wherein said pellets in said pellet movement assembly generate volatile organic compounds and wherein said volatile organic compounds are captured and delivered to and burned in said combustion chamber.3. The pellet stove of claim 1 , wherein said pellet movement assembly is a screw auger in a tube.4. The pellet stove of claim 3 , wherein said tube terminates in a funnel that permits pellets to drop into said combustion chamber.5. The pellet stove of claim 4 , wherein air is permitted to enter said funnel from outside of said stove claim 4 , and said entering air helps to sweep pellets and volatile organic compounds into said combustion chamber.6. The pellet stove of claim 4 , further including a primary heat exchanger claim 4 , through which exhaust gasses flow claim 4 , and wherein said funnel is not joined to the top of the combustion chamber claim 4 , but wherein ...

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Номер записи: 88

15-11-2018 дата публикации

Controlling Slagging and/or Fouling in Furnaces Burning Biomass

Номер: US20180327683A1

Автор: Saratovsky Ian, Smyrniotis Christopher R.

Принадлежит: FUEL TECH, INC.

The description relates to controlling slagging and/or fouling in biomass burning furnaces. Combustion of such a biomass the fuel with air produces combustion gases containing sodium and/or potassium compositions, and the combustion gases are treated by contacting the combustion gases with kaolin and aluminum hydroxide. At least one of the kaolin and aluminum hydroxide can be introduced with the fuel, in a combustion chamber, with reburn fuel or with overfire air. For fuels also high in zinc and/or heavy metals, magnesium hydroxide is introduced into the combustion chamber or following heat exchangers. 1. A process for controlling slagging and/or fouling in biomass burning combustors , comprising:a. combusting the fuel comprising biomass with air to produce combustion gases containing sodium and/or potassium compositions; andb. contacting the combustion gases with kaolin and aluminum hydroxide.2. A process according to claim 1 , wherein the introduction is into the combustor at a temperature within the range of from 1500 to 300° C.3. A process according to claim 1 , wherein at least one of the kaolin and aluminum hydroxide are introduced with the fuel.4. A process according to claim 1 , wherein at least one of the kaolin and aluminum hydroxide are introduced through ports in a combustion chamber where the fuel is combusted.5. A process according to any of - claim 1 , wherein at least one of the kaolin and aluminum hydroxide are introduced into the combustion chamber as an aqueous slurry.6. A process according to claim 1 , wherein biomass fuel is introduced as a reburn fuel and at least one of the kaolin and aluminum hydroxide are introduced with the fuel.7. A process according to claim 1 , wherein at least one of the kaolin and aluminum hydroxide are introduced with overfire air.8. A process according to claim 1 , wherein the fuel is high in zinc and/or heavy metals and magnesium hydroxide is introduced into the combustion chamber or following heat exchangers. The ...

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Номер записи: 89

01-12-2016 дата публикации

Lignite drying with closed loop heat pump

Номер: US20160348023A1

Автор: Didier WANTZ, Frederic Geiger, Thierry Pourchot, Thomas EDEL

Принадлежит: Alstom Technology AG, General Electric Technology GmbH

The invention relates to a dryer system for drying lignite coal used in a power plant. The system comprises a dryer and a closed loop heat pump circuit that is configured and arranged to provide heat energy to the dryer. The closed loop heat pump circuit includes a working fluid, a dryer heat exchanger, an expansion device fluidly connected and downstream of the dryer heat exchanger, arranged to enable heat energy transfer from the vapour of the second outlet line to the first working fluid and a compressor for compressing the working fluid.

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Номер записи: 90

22-10-2020 дата публикации

METHOD AND ADDITIVE FOR CONTROLLING NITROGEN OXIDE EMISSIONS

Номер: US20200332213A1

Автор: Baldrey Kenneth E., Bisque Ramon, Morris William J., Senior Constance

Принадлежит:

The present disclosure is directed to an additive mixture and method for controlling nitrogen oxide(s) by adding the additive mixture to a feed material prior to combustion. 1. A method for reducing NOemissions in a pulverized coal boiler system , comprising:contacting a feed material with an additive mixture comprising an additive and a thermal stability agent to form an additive-containing feed material, wherein the additive, in the absence of the thermal stability agent, is unstable when the feed material is combusted; andcombusting the additive-containing feed material to produce a contaminated gas stream comprising a contaminant produced by combustion of the feed material and the additive or a derivative thereof, wherein the additive or a derivative thereof removes or causes removal of the contaminant.2. The method of claim 1 , wherein the contaminant is one or more of an acid gas claim 1 , mercury claim 1 , and carbon oxide claim 1 , wherein the additive comprises one or more of a halogen claim 1 , halide claim 1 , nitrogenous material claim 1 , and activated carbon claim 1 , and wherein the thermal stability agent comprises one or more of a metal hydroxide claim 1 , metal carbonate claim 1 , metal bicarbonate claim 1 , and ash.3. The method of claim 2 , wherein the additive comprises a nitrogenous material and wherein the nitrogenous material is one or more of ammonia claim 2 , an amine claim 2 , an amide claim 2 , cyanuric acid claim 2 , and urea.4. The method of claim 3 , wherein the additive further comprises one or more of a stabilizing agent claim 3 , dispersant claim 3 , and binder.5. The method of claim 1 , wherein the thermal stability agent comprises one or more of a metal hydroxide claim 1 , metal carbonate claim 1 , metal bicarbonate claim 1 , metal hydrate claim 1 , and metal nitride.6. The method of claim 1 , wherein the thermal stability agent comprises a porous substrate for supporting the additive and wherein the substrate is one or more of a ...

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Номер записи: 91

22-10-2020 дата публикации

PROCESS TO REDUCE EMISSIONS OF NITROGEN OXIDES AND MERCURY FROM COAL-FIRED BOILERS

Номер: US20200332214A1

Автор: Bustard Cynthia Jean, Durham Michael D., Filippelli Gregory M., Morris William J., Senior Constance, Sjostrom Sharon M.

Принадлежит:

A flue gas additive is provided that includes both a nitrogenous component to reduce gas phase nitrogen oxides and a halogen-containing component to oxidize gas phase elemental mercury. 1. A method of forming a treated combustion feed material comprising:providing a combustion feed material comprising coal; andcontacting the feed material with an additive to form a treated combustion feed material, wherein the additive comprises a nitrogenous material that forms ammonia when combusted and a halogen containing material that forms a gas-phase halogen when combusted.2. The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and an amide and wherein the additive is a free flowing particulate composition having a Psize ranging from about 6 to about 20 mesh (Tyler).3. The method of claim 1 , wherein the nitrogenous material comprises at least one of an amine and an amide and wherein the nitrogenous material is supported by a particulate substrate claim 1 , the particulate substrate being one or more of the combustion feed material claim 1 , a zeolite claim 1 , a porous metal silicate material claim 1 , a clay claim 1 , an activated carbon claim 1 , char claim 1 , graphite claim 1 , flyash claim 1 , a metal claim 1 , and a metal oxide.4. The method of claim 1 , wherein the nitrogenous material comprises urea.5. The method of claim 1 , wherein a halogen in the halogen-containing material is one or more of iodine and bromine.6. The method of claim 1 , wherein the nitrogenous material is encapsulated with a coating comprising one or more of a silane claim 1 , siloxane claim 1 , organosilanes claim 1 , amorphous silia to impede thermal degradation and/or decomposition of the nitrogenous material.7. The method of claim 1 , wherein the treated combustion feed material comprises from about 0.05 to about 1 wt. % of the additive with the remainder being the coal and wherein the treated combustion feed material comprises a mass ratio of nitrogen: ...

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Номер записи: 92

08-12-2016 дата публикации

COMBUSTION BURNER, SOLID-FUEL-COMBUSTION BURNER, SOLID-FUEL-COMBUSTION BOILER, BOILER, AND METHOD FOR OPERATING BOILER

Номер: US20160356489A1

Автор: Abe Naofumi, Domoto Kazuhiro, Kasai Jun, Matsumoto Keigo

Принадлежит: MITSUBISHI HEAVY INDUSTRIES, LTD.

Provided is a combustion burner including: a fuel nozzle () that is able to blow a fuel gas obtained by mixing pulverized coal with primary air; a secondary air nozzle () that is able to blow secondary air from the outside of the fuel nozzle (); a flame stabilizer () that is provided at a front end portion of the fuel nozzle () so as to be near the axis center; and a rectification member () that is provided between the inner wall surface of the fuel nozzle () and the flame stabilizer (), wherein an appropriate flow of a fuel gas obtained by mixing solid fuel with air may be realized. 1. A combustion burner comprising:a fuel nozzle that is arranged to blow a fuel gas obtained by mixing solid fuel with air;a secondary air nozzle that is arranged to blow air from the outside of the fuel nozzle;a flame stabilizer that is provided at a front end portion of the fuel nozzle so as to be near an axis center side of the fuel nozzle; anda rectification member that is provided between an inner wall surface of the fuel nozzle and the flame stabilizer.2. The combustion burner according to claim 1 ,wherein the rectification member is disposed so that a front end thereof in the fuel gas flowing direction terminates downstream of a front end of the flame stabilizer in the fuel gas flowing direction.3. The combustion burner according to claim 1 ,wherein the flame stabilizer is disposed so that a front end thereof in the fuel gas flowing direction terminates downstream of a front end of the rectification member in the fuel gas flowing direction.4. The combustion burner according to claim 1 ,wherein the rectification member is disposed so as to have a predetermined gap with respect to the flame stabilizer.5. The combustion burner according to claim 1 ,wherein the rectification member is provided so that a distance between the rectification member and the flame stabilizer is substantially uniform in the fuel gas flowing direction.6. The combustion burner according to claim 1 ,wherein a ...

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Номер записи: 93

08-12-2016 дата публикации

Combustion burner, solid-fuel-combustion burner, solid-fuel-combustion boiler, boiler, and method for operating boiler

Номер: US20160356494A1

Автор: Jun Kasai, Kazuhiro Domoto, Keigo Matsumoto, Naofumi Abe

Принадлежит: Mitsubishi Heavy Industries Ltd

Provided is a combustion burner including: a fuel nozzle ( 51 ) that is able to blow a fuel gas obtained by mixing pulverized coal with primary air; a secondary air nozzle ( 52 ) that is able to blow secondary air from the outside of the fuel nozzle ( 51 ); a flame stabilizer ( 54 ) that is provided at a front end portion of the fuel nozzle ( 51 ) so as to be near the axis center; and a rectification member ( 55 ) that is provided between the inner wall surface of the fuel nozzle ( 51 ) and the flame stabilizer ( 54 ), wherein an appropriate flow of a fuel gas obtained by mixing solid fuel with air may be realized.

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Номер записи: 94

17-12-2015 дата публикации

COAL ROPE DISTRIBUTOR WITH REPLACEABLE WEAR COMPONENTS

Номер: US20150362181A1

Автор: Adam Daniel J., Briggs, Campanelli Thomas J., Colson Paul M., Curl Christopher D., Dau Dai Q., JR. Oliver G., Mills Wendell H.

Принадлежит: ALSTOM Technology Ltd

A head assembly for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes. The vanes may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port toward the outlet port. The curved vanes curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover that allows for easy access. The vanes are attached to a wear-resistant replaceable liner thus allowing them to be easily removed and replaced. The wear-resistant liner may be made from several parts for ease of removal and replacement. 1. A head assembly for a nozzle , the head assembly comprising:a lower casing having an opening;a removable cover adapted to attach to the lower casing to cover the opening and form an elbow defining an internal cavity and having an input port and output port;a wear-resistant casing liner being tubular and disposed within the internal cavity to form a tubular inner extending circumferentially about the internal cavity and wall fluidly coupling the inlet port and the outlet port, the wear-resistant casing liner being insertable into and replaceable through the opening of the lower casing.2. The head assembly of claim 1 , further comprising at least one wear-resistant claim 1 , replaceable curved vane disposed within the wear-resistant casing liner for directing a portion of a stream of fluidized particles from the inlet port to the outlet port to reduce contact with the wear-resistant casing liner.3. The head assembly of claim 1 , wherein a portion of the wear resistant casing liner includes a wear-resistant claim 1 , replaceable cover liner within the removable cover for protecting the removable cover from wear.4. The head assembly of claim 2 , wherein the at least one wear-resistant claim 2 , replaceable curved vane has a radius of curvature approximately equal to a cross-sectional circumference of ...

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Номер записи: 95

14-12-2017 дата публикации

METHODS AND DEVICES FOR EVEN DISTRIBUTION OF SOLID FUEL MATERIALS

Номер: US20170356644A1

Автор: FITZSIMMONS Mark

Принадлежит: GAS TECHNOLOGY INSTITUTE

Methods, devices and systems for processing of solid materials, particularly fuel material solids such as carbonaceous fuel solids such as of granular form, to provide or result in an even distribution of the solid material. Hoppers are provided with plurality of outlet orifices, each of the outlet orifices adapted to flow therethrough a combination of gas and the solid material to pneumatically convey the solid material to a distribution manifold. The distribution manifold includes a plurality of tubes with each tube having a plurality of exit orifices wherein each exit orifice passes an equal portion of the combination of the gas and the solid material. 1. A system for even distribution of a solid fuel material , said system comprising:a hopper provided with plurality of outlet orifices, each of said outlet orifices adapted to flow therethrough a combination of gas and the solid fuel material to pneumatically convey the solid fuel material to a distribution manifold; andthe distribution manifold to distribute an even flow of the solid fuel material over an extended distribution area, the distribution manifold comprising a plurality of tubes with each tube having a plurality of exit orifices wherein each exit orifice passes an equal portion of the combination of the gas and the solid fuel material.2. The system of wherein the flow of the combination of the gas and the solid fuel material through each of said outlet orifices is in an equal amount.3. The system of wherein the flow of the combination of the gas and the solid fuel material through each of said tubes is in an equal amount.4. The system of comprising a plurality of said hoppers claim 1 , wherein each of said hoppers provides the combination of gas and solid fuel material to the distribution manifold at a different selected pressure.5. The system of additionally comprising a mechanical metering means to the solid fuel material at a specific volumetric flow rate.6. The system of wherein the mechanical ...

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Номер записи: 96

31-12-2015 дата публикации

Process for operating a furnace with bituminous coal and method for reducing slag formation therewith

Номер: US20150377483A1

Автор: Mark Pastore

Принадлежит: Environmental Energy Services Inc

There is provided a process for operating a coal-fired furnace to generate heat. The process has the steps of a) providing the coal to the furnace and b) combusting the coal in the presence of a first slag-reducing ingredient and a second slag-reducing ingredient in amounts effective to reduce slag formation in the furnace. In one embodiment, the first slag-reducing ingredient is one or more oxygenated magnesium compounds and the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, one or more oxygenated silicon compounds, and combinations thereof. In another embodiment, the first slag-reducing ingredient is one or more oxygenated silicon compounds, and wherein the second slag-reducing ingredient is one or more oxygenated aluminum compounds. There are also provided methods for reducing slag formation in a coal-fired furnace. There are also provided methods for treating coal. There are also treated coals.

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Номер записи: 97

20-12-2018 дата публикации

ENZYME TREATMENT OF COAL FOR MERCURY REMEDIATION

Номер: US20180362870A1

Автор: Abbott Murray

Принадлежит:

Emissions of mercury, NOx, and/or SOx are reduced by enzyme treating coal before combustion, optionally with further treatment of the coal with certain non-bromine containing powder sorbents. y using the steps together, mercury can be reduced by 40% or more, and NOx by 20% or more. Advantageously, no bromine is introduced with the remediation steps. 1. A method of burning coal to reduce emissions of mercury , comprising:treating coal with an enzyme composition by applying the enzyme composition onto the coal and reacting for a time period to make an enzyme treated coal;combusting the enzyme treated coal in the furnace of a coal burning facility to create heat energy and flue gases;measuring the amount of mercury in the flue gas; andadjusting the treating step if the measured amount of mercury is above or below a target level,wherein the enzyme composition comprises water, the enzyme, and any required cofactor at a pH at which the enzyme is active.2. The method according to claim 1 , wherein adjusting the treating step comprises applying a greater amount of the enzyme composition claim 1 , applying a lesser amount of the enzyme composition claim 1 , reacting for a shorter time claim 1 , or reacting for a longer time.3. The method according to claim 1 , wherein the enzyme composition comprises an oxidoreductase classified as EC 1 in the EC number classification of enzymes.4. The method according to claim 1 , wherein the enzyme composition comprises an oxidase that catalyzes an oxidation reduction reaction involving molecular oxygen as electron acceptor.5. The method according to claim 1 , wherein the enzyme composition comprises one or more components of the pyruvate dehydrogenase complex.6. The method according to claim 1 , wherein the enzyme composition comprises NAD claim 1 , NADP claim 1 , or FADP.7. The method according to claim 1 , wherein the enzyme comprises laccase claim 1 , pyruvate dehydrogenase claim 1 , dihydrolipoyl transacetylase claim 1 , or ...

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Номер записи: 98

20-12-2018 дата публикации

Gas Fixture Safety Cover

Номер: US20180363795A1

Автор: Tamarkin Dawn A.

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A gas fixture safety cover comprising: a first wall; a second wall attached to the first wall, the second wall is generally perpendicular to the first wall; a third wall attached to the second wall and generally perpendicular to the second wall; a fourth wall attached to the third wall and first wall, the fourth wall generally perpendicular to the third wall and first wall; a first nozzle vertical slot in the first wall and extending to the bottom of the first wall; a second nozzle vertical slot in the second wall and extending to the bottom of the second wall and where the height of the first handle vertical slot is higher than the height of the first nozzle vertical slot; where when the gas fixture safety cover can only slide down over a two nozzle and two handle gas fixture when the two handles are both turned off; where when the gas fixture safety cover has slid onto a gas fixture when the gas valve handle is turned off, the gas fixture safety cover abuts a counter top, and where when the gas fixture safety cover has slid onto a gas fixture when the gas valve handle is turned on, the gas fixture safety cover does not abut a counter top. 1. A gas fixture safety cover comprising:at least one wall, wherein the at least one wall is curved such that one portion of the surface of the wall is perpendicular to another portion of the surface of the wall;at least one handle vertical slot located in the at least one wall, and the at least one handle vertical slot extends to the bottom of the at least one wall;at least one nozzle vertical slot located in the at least one wall, and the at least one nozzle vertical slot is substantially perpendicular to the at least one handle vertical slot, and the at least one nozzle vertical slot extending to the bottom of the at least one wall, and wherein the height of the at least one handle vertical slot is higher than the height of the at least one nozzle vertical slot;wherein the bottom of the gas fixture safety cover is opened, and ...

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Номер записи: 99

27-12-2018 дата публикации

PULVERIZING DEVICE, THROAT FOR PULVERIZING DEVICE, AND PULVERIZED-COAL FIRED BOILER

Номер: US20180372313A1

Автор: KANEMOTO Hiroaki, Kashima Jun, Kitakaze Kosuke, Matsumoto Shinji, Onishi Yasuhito

Принадлежит: Mitsubishi Hitachi Power Systems, Ltd.

A pulverizing device includes: a housing; a pulverization table configured to rotate inside the housing; and a throat, disposed inside the housing on a radially outer side of the pulverization table, for forming an upward air flow. The throat includes: an inner ring extending along an outer periphery of the pulverization table; an outer ring, disposed on a radially outer side of the inner ring so as to form an annular flow passage between the inner ring and the outer ring; and a plurality of throat vanes disposed between the inner ring and the outer ring. The following expressions are satisfied: 2.0≤L/d≤4.0; and 0.5≤H/d≤1.5, where H is a gap between the inner ring and the outer ring with respect to a radial direction, L is a length of the throat vanes, and ‘d’ is a distance between adjacent two of the throat vanes, 3. The pulverizing device according to claim 1 ,wherein each throat vane is oblique toward an upstream side, with respect to a rotational direction of the throat, from a lower end toward an upper end of the throat vane, and {'br': None, 'sup': −2.0', '−1.2, '(d) H/d≥0.95×(sin θ)×(L/d)'}, 'wherein following expression (d) is satisfiedwhere θ is an inclination angle of the throat vanes with respect to a rotational center axis of the throat.4. The pulverizing device according to claim 1 ,wherein the inner ring includes a flow guide portion for guiding an air flow which flows from below into the annular flow passage, the flow guide portion being disposed on a lower end side of the inner ring and having a curved shape so as to become closer to an inner side, with respect to the radial direction, toward a lower end of the inner ring.5. The pulverizing device according to claim 1 ,wherein a circumferential speed of the pulverization table is not less than 3 m/s and not more than 5 m/s.7. The pulverizing device according to claim 1 , configured to pulverize coal as a to-be-pulverized material.8. A pulverized-coal fired boiler claim 1 , comprising:{'claim-ref': ...

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Номер записи: 100