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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 7387. Отображено 100.

02-02-2012 дата публикации

Multistage cyclonic fluid separator

Номер: US20120024690A1

Автор: Cornelis Antonie Tjeenk Willink, Marco Betting, Robert Petrus Van Bakel

Принадлежит: Twister BV

The invention relates to a cyclonic fluid separator comprising a throat portion ( 4 ) which is arranged between a converging fluid inlet section and a diverging fluid outlet section. The cyclonic fluid separator is arranged to facilitate a cyclonic flow through the converging fluid inlet section and the throat portion towards the diverging fluid outlet section in a downstream direction. The diverging fluid outlet section comprises an inner primary outlet conduit ( 7 ) for condensable depleted fluid components and an outer secondary outlet conduit ( 6 ) for condensable enriched fluid components. The cyclonic fluid separator comprises a further outer secondary outlet conduit ( 16 ). The outer secondary outlet conduit ( 6 ) is positioned on a first position along a central axis (I) of the cyclonic fluid separator and the further outer secondary outlet conduit ( 16 ) is positioned on a second position along the central axis (I) of the cyclonic fluid separator.

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Номер записи: 1

23-02-2012 дата публикации

Lng facility with integrated ngl recovery for enhanced liquid recovery and product flexibility

Номер: US20120042690A1

Автор: Doug Elliot, Jame Yao, Jong Juh Chen, Rong-Jwyn Lee, Shawn S. Huang, Weldon L. Ransbarger, Wesley Qualls

Принадлежит: ConocoPhillips Co

Process for efficiently operating a natural gas liquefaction system with integrated heavies removal/natural gas liquids recovery to produce liquefied natural gas (LNG) and/or natural gas liquids (NGL) products with varying characteristics, such as, for example higher heating value (HHV) and/or propane content. Resulting LNG and/or NGL products are capable of meeting the significantly different specifications of two or more markets.

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Номер записи: 2

15-03-2012 дата публикации

Method for separating off nitrogen and hydrogen from natural gas

Номер: US20120060554A1

Автор: Hans Schmidt

Принадлежит: Linde GmbH

The invention relates to a method for separating off nitrogen and lighter components, in particular hydrogen, carbon monoxide, neon and argon, from a feed fraction (e.g., natural gas) that is to be liquefied containing at least methane, nitrogen and hydrogen. The cooling and liquefaction of the feed fraction proceeds against the refrigerant or mixed refrigerant of at least one refrigeration cycle. In the inventive method, the feed fraction ( 1 ) is partially condensed (E 1 ), and separated in at least one rectification column (T) into a methane-rich fraction ( 6 ) and a fraction ( 4 ) containing nitrogen and lighter components. The methane-rich fraction ( 6 ) is subcooled. Additionally, cooling of the top condenser (E 2 ) of the rectification column (T) proceeds via a refrigerant or mixed refrigerant or a substream of the refrigerant or mixed refrigerant of at least one, refrigeration cycle ( 20 - 24 ).

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Номер записи: 3

19-04-2012 дата публикации

Configurations and Methods of Heating Value Control in LNG Liquefaction Plant

Номер: US20120090350A1

Автор: John Mak

Принадлежит: Fluor Technologies Corp

NGL recovery from natural gas is achieved by processing the natural gas in a scrub column that operates at high pressure. A C3+ depleted vapor stream is generated from the vapor portion of partially condensed scrub column overhead and expanded to provide refrigeration for the vapor portion to so form a second reflux stream and the C3+ depleted vapor stream. The C3+ depleted vapor stream is then combined with another vapor portion of partially condensed column overhead to produce a lean liquefaction feed stream.

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Номер записи: 4

26-04-2012 дата публикации

Process for separating and recovering NGLs from hydrocarbon streams

Номер: US20120096895A1

Автор: Kirtikumar Natubhai Patel, Rohit N. Patel

Принадлежит: Individual

This process comprises using unconventional processing of hydrocarbons, e.g. natural gas, for recovering C2+ and NGL hydrocarbons that meet pipeline specifications, without the core high capital cost requirement of a demethanizer column, which is central to and required by almost 100% of the world's current NGL recovery technologies. It can operate in Ethane Extraction or Ethane Rejection modes. The process uses only heat exchangers, compression and simple separation vessels to achieve specification ready NGL. The process utilizes cooling the natural gas, expansion cooling, separating the gas and liquid streams, recycling the cooled streams to exchange heat and recycling selective composition bearing streams to achieve selective extraction of hydrocarbons, in this instance being NGLs. The compactness and utility of this process makes it feasible in offshore applications as well as to implementation to retrofit/revamp or unload existing NGL facilities. Many disparate processes and derivatives are anticipated for its use.

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Номер записи: 5

17-05-2012 дата публикации

Process For The Production Of Hydrogen And Carbon Dioxide

Номер: US20120118011A1

Автор: Arthur Darde, Bhadra S. Grover, Dennis A. Vauk, Paul TERRIEN, Purushottam V. Shanbhag, Trapti Chaubey

Принадлежит: Air Liquide Large Industries US LP, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

The present invention provides a method to more efficiently recover hydrogen and carbon dioxide as well as a design for carbon dioxide capture from syngas that allows for the simultaneous production of medium to high amounts of hydrogen and the capture of at least 90% of the carbon dioxide in the syngas as a part of the production of hydrogen in a hydrogen generation plant. Through the use of a combination of hydrogen selective membranes and carbon dioxide selective membranes together with a carbon dioxide separation unit it is possible to increase recovery of hydrogen and carbon dioxide and improved process efficiency of the hydrogen generation plant.

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Номер записи: 6

17-05-2012 дата публикации

Separation of gases

Номер: US20120118012A1

Автор: Jonathan Alec Forsyth, Kazumasa Ogura, Michael Edward Bailey, Yasushi Mori

Принадлежит: Individual

A process for separating a mixture of gases into a relatively condensable first component and a relatively non-condensable second component is provided. The first component comprises one or more gases selected from the group consisting of carbon dioxide, carbonyl sulphide and hydrogen sulphide and the second component one or more gases selected from the group consisting of hydrogen, methane, ethane, carbon monoxide, nitrogen, oxygen and synthesis gas. The process itself comprises the following steps: (a) compressing and cooling a mixture of said first and second components in at least one compressor and at least one heat exchanger to a temperature and elevated pressure at which the first components condense and a two-phase gas-liquid mixture is formed; (b) separating the two phase mixture so formed into separate liquid first and gaseous second component fractions in a fractionation unit; (c) extracting residual first component from the separated gaseous second component fraction by scrubbing the second component at elevated pressure with a solvent (e.g. methanol) in a scrubber. In examples, the method further includes one or more steps of warming and expanding the gaseous second component fraction using at least one heat exchanger to exchange heat with a process stream and at least one turbo-expander capable of recovering mechanical work. The process described is highly energy efficient and is especially useful in hydrogen power plants, Integrated Gasification Combined Cycles (IGCC) and for sweetening sour natural gas.

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Номер записи: 7

16-08-2012 дата публикации

Cryogenic system for removing acid gases from a hydrocarbon gas stream, with removal of hydrogen sulfide

Номер: US20120204599A1

Автор: Bruce T. Kelley, Charles J. Mart, Paul Scott Northrop

Принадлежит: Individual

A system for removing acid gases from a raw gas stream includes an acid gas removal system (AGRS) and a sulfurous components removal system (SCRS). The acid gas removal system receives a sour gas stream and separates it into an overhead gas stream comprised primarily of methane, and a bottom acid gas stream comprised primarily of carbon dioxide. The sulfurous components removal system is placed either upstream or downstream of the acid gas removal system. The SCRS receives a gas stream and generally separates the gas stream into a first fluid stream comprising hydrogen sulfide, and a second fluid stream comprising carbon dioxide. Where the SCRS is upstream of the AGRS, the second fluid stream also includes primarily methane. Where the SCRS is downstream of the AGRS, the second fluid stream is principally carbon dioxide. Various types of sulfurous components removal systems may be utilized.

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Номер записи: 8

27-09-2012 дата публикации

Methanol to olefins process

Номер: US20120240615A1

Автор: Stephen De Haan

Принадлежит: Lummus Technology Inc

A process for chilling ethylene to required storage temperatures is disclosed, the process including: cooling an ethylene product from at least one of an ethylene production process and an ethylene recovery process via indirect heat exchange with a coolant at a temperature less than about −100° C. to decrease the temperature of the ethylene product; mixing a portion of the cooled ethylene product with methane to form the coolant; expanding at least one of the coolant, the methane, and the portion of the cooled ethylene to reduce a temperature of the coolant to less than −100° C. prior to the cooling; and feeding the heat exchanged coolant to at least one of the ethylene production process, the ethylene recovery process, and an open-loop refrigeration system.

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Номер записи: 9

27-09-2012 дата публикации

Method and device for treating a carbon-dioxide-containing gas flow, wherein the energy of the vent gas (work and cold due to expansion) is used

Номер: US20120240619A1

Автор: Annett Kutzschbach, Roland Ritter

Принадлежит: Linde KCA Dresden GmbH

The invention relates to a method and a device for treating a carbon-dioxide-containing gas stream, in particular from a large-scale fired plant, e.g. from a power plant. The precompressed gas stream is separated in a carbon dioxide purification stage into a gas substream having an elevated carbon dioxide content (carbon dioxide product stream) and a gas substream having a decreased carbon dioxide content (vent gas stream). The carbon dioxide product stream is fed to further utilization and/or storage. In particular, by injecting the carbon dioxide underground, the emission of gases harmful to the climate can be reduced. For improving the energy efficiency, it is proposed that the vent gas stream is expanded in at least one expansion turbine and both the resultant kinetic energy and the resultant refrigeration are utilized for energy recovery. For utilizing the kinetic energy, the expansion turbine can be coupled to a compressor (booster) which compresses the crude gas stream and/or the carbon dioxide product stream. For utilizing the refrigeration generated in the expansion, the at least partially expanded vent gas stream can be brought into heat exchange with process streams which are to be cooled, e.g. the crude gas stream and/or the carbon dioxide product stream.

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Номер записи: 10

11-10-2012 дата публикации

Single-Unit Gas Separation Process Having Expanded, Post-Separation Vent Stream

Номер: US20120255325A1

Автор: Eric Prim

Принадлежит: Pilot Energy Solutions LLC

A process comprising separating a hydrocarbon feed stream into a natural gas-rich stream and a liquefied petroleum gas (LPG)-rich stream using process equipment comprising only one multi-stage separation column, wherein the natural gas-rich stream has an energy content of less than or equal to about 1,300 British thermal units per cubic foot (Btu/ft 3 ), and wherein the LPG-rich stream has a vapor pressure less than or equal to about 350 pounds per square inch gauge (psig). A process comprising separating a hydrocarbon feed stream into a top effluent stream and a LPG-rich stream, and subsequently expanding the top effluent stream to produce a natural gas-rich stream. An apparatus comprising a multi-stage separation column configured to separate a hydrocarbon feed stream into a top effluent stream and a LPG-rich stream, and an expander configured to expand the top effluent stream and produce a natural gas-rich stream.

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Номер записи: 11

25-10-2012 дата публикации

Method for fractionating a stream of cracked gas to obtain an ethylene-rich cut and a stream of fuel, and related installation

Номер: US20120266630A1

Автор: Jean-Paul Laugier, Yvon Simon

Принадлежит: Technip France SAS

This method includes introducing a downstream stream ( 140 ) of cracked gas from a downstream heat exchanger ( 58 ) in a downstream separator ( 60 ) and recovering, at the head of the downstream separator ( 60 ), a high-pressure fuel gas stream ( 144 ). The method includes the passage of the stream ( 144 ) of fuel through the downstream exchanger ( 58 ) and an intermediate exchanger ( 50, 54 ) to form a reheated high-pressure fuel stream ( 146 ), the expansion of the reheated high-pressure fuel stream ( 146 ) in at least a first dynamic expander ( 68 ) and the passage of the partially expanded fuel stream ( 148 ) from the intermediate exchanger ( 50, 54 ) in a second dynamic expander ( 70 ) to form an expanded fuel stream ( 152 ). The expanded fuel stream ( 152 ) from the second dynamic expander ( 70 ) is reheated in the downstream heat exchanger ( 58 ) and in the intermediate heat exchanger ( 50, 54 ).

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Номер записи: 12

10-01-2013 дата публикации

Refrigeration process

Номер: US20130008204A1

Автор: Jin-Kuk Kim, Xuesong Zheng

Принадлежит: University of Manchester

The present invention relates to a single cycle mixed refrigerant process for industrial cooling applications, for example, the liquefaction of natural gas. The present invention also relates to a refrigeration assembly configured to implement the processes defined herein and a mixed refrigerant composition usable in such processes.

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Номер записи: 13

28-02-2013 дата публикации

Gas liquefaction system and method

Номер: US20130047632A1

Автор: Conrado Rillo MILLÁN, Leticia Tocado MARTÍNEZ, Richard C. Reineman, Richard J. Warburton

Принадлежит: Consejo Superior de Investigaciones Cientificas CSIC, GWR Instruments Inc, UNIVERSIDAD DE ZARAGOZA

A system and a method for liquefaction of gases which are utilized in their liquid state as refrigerants in applications that require low temperatures, throughout various pressure ranges, from slightly above atmospheric pressures to pressures near the critical point. The system and method are based on closed-cycle cryocoolers and utilize the thermodynamic properties of the gas to achieve optimal liquefaction rates.

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Номер записи: 14

14-03-2013 дата публикации

Cooling system

Номер: US20130061607A1

Автор: Andres Kundig

Принадлежит: Linde GmbH

The invention relates to a cooling system for cooling a refrigeration consumer (K) that has a single-stage or multi-stage compressor to compress refrigerant circulating in the cooling system, at least one heat exchanger to cool the refrigerant, and at least one expansion turbine to expand the refrigerant in a way that gives off cold. A storage device that serves to store liquid refrigerant is assigned to the cooling system, or a storage device is integrated into the cooling system, in such a way that at least temporarily, liquid refrigerant can be fed into the cooling circuit from the storage device.

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Номер записи: 15

09-05-2013 дата публикации

Carbon Dioxide Purification

Номер: US20130111949A1

Автор: David R. Koch, Loren E. Gearhart, Sanjiv N. Patel

Принадлежит: Lummus Technology Inc

A process for the recovery of carbon dioxide from a gas mixture that includes pretreating a gas mixture comprising carbon dioxide, water vapor, and one or more light gases in a pretreating system to form a cooled gas mixture, fractionating the cooled gas mixture to recover a bottoms fraction comprising carbon dioxide and an overheads fraction comprising carbon dioxide and the light gases, passing the overheads fraction over a membrane selective to carbon dioxide to separate a carbon dioxide permeate from a residue gas comprising the light gases, recycling the carbon dioxide permeate to the pretreating system, and recovering at least a portion of the bottoms fraction as a purified carbon dioxide product stream is described.

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Номер записи: 16

06-06-2013 дата публикации

Air separation method and apparatus

Номер: US20130139547A1

Автор: Henry Edward Howard, Matthew R. WATT, Thomas J. Bergman, Jr.

Принадлежит: Praxair Technology Inc

A method and apparatus to produce oxygen and nitrogen co-products in which a compressed a compressed and purified air stream is cooled, fully or partially condensed and then rectified in a main distillation column to form a nitrogen-rich vapor column overhead and crude liquid oxygen. A crude liquid oxygen stream is depressurized and then stripped in an auxiliary distillation column with a stripping gas to produce an oxygen-rich liquid. The nitrogen-rich vapor column overhead from the main distillation column is used to form a nitrogen product and the crude liquid oxygen is partially vaporized to produce the stripping gas, a residual oxygen-rich liquid and liquid nitrogen reflux to the main distillation column. The oxygen product is formed from the residual oxygen-rich liquid by either providing the heat exchange duty in condensing the compressed and purified air stream or by condensing nitrogen-rich vapor used in refluxing the main distillation column.

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Номер записи: 17

20-06-2013 дата публикации

Method To Produce Liquefied Natural Gas (LNG) At Midstream Natural Gas Liquids (NGLs) Recovery Plants

Номер: US20130152627A1

Автор: Jose Lourenco, Mackenzie Millar

Принадлежит: Jose Lourenco, Mackenzie Millar

A method to recover natural gas liquids (NGLs) from natural gas streams at NGL recovery plants. The present disclosure relates to methods using liquid natural gas (LNG) as an external source of stored cold energy to reduce the energy and improve the operation of NGL distillation columns. More particularly, the present disclosure provides methods to efficiently and economically achieve higher recoveries of natural gas liquids at NGL recovery plants.

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Номер записи: 18

22-08-2013 дата публикации

Methods and apparatuses for processing natural gas

Номер: US20130213086A1

Автор: Gregory F. Maher

Принадлежит: UOP LLC

Methods and apparatuses for processing natural gas are provided. In a method for processing a natural gas stream, the natural gas stream is fractionated to form an overhead stream and a bottoms stream. The overhead stream is separated with a membrane to form a methane rich residual stream and a permeate stream.

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Номер записи: 19

14-11-2013 дата публикации

Method and device for condensing a first fluid rich in carbon dioxide using a second fluid

Номер: US20130298598A1

Автор: Fabrice Rivoal, Michel Lestrade

Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

The present invention relates to a process and device for condensing a first fluid rich in carbon dioxide using a second fluid.

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Номер записи: 20

21-11-2013 дата публикации

Method and arrangement for expanding a gas stream comprising carbon dioxide

Номер: US20130305750A1

Автор: Olaf Stallmann

Принадлежит: Alstom Technology AG

The present disclosure relates to a method and an arrangement for expanding a gas stream comprising carbon dioxide, CO 2 . The method includes: removing CO 2 from a process gas to produce a CO 2 lean gas stream comprising residual CO 2 ; monitoring a temperature of the gas stream downstream of an expander; controlling a pressure of the gas stream downstream of the expander by means of a pressure controller; and overriding the pressure controller when the temperature downstream of the expander is below a predefined minimum temperature; whereby deposition of solid CO 2 from the residual CO 2 in the gas stream is avoided. The disclosure also relates to a gas cleaning system and a power plant, such as an oxy-combustion power plant, associated with the arrangement.

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Номер записи: 21

02-01-2014 дата публикации

Apparatus for storing hydrogen and magnetic energy and a method for the operation of said apparatus

Номер: US20140000288A1

Автор: Holger Neumann, Michael Sander

Принадлежит: Karlsruher Institut fuer Technologie KIT

An apparatus for storing hydrogen and magnetic energy includes a storage tank for liquefied hydrogen with an inlet line for compressed hydrogen and an outlet line for hydrogen at a relatively low pressure. The apparatus includes a superconducting magnetic energy store, which comprises a magnetic coil relative to which electrical energy can be supplied or withdrawn via power supply lines to the magnet coil, the energy being located in a cryogenic tank provided with a cooling device and being held at operating temperature. The storage tank for liquefied hydrogen includes cooling device, at least one regenerator, with a heat-absorbing and heat-emitting storage medium, a warm side and a cold side. From the warm side, the compressed hydrogen and, from the cold side, liquefied hydrogen can be supplied from the storage tank for liquefied hydrogen. A relief valve is located in the field region of the at least one magnet coil. The relief valve is connected to the cold side of the regenerator so the compressed hydrogen, having passed through the regenerator, can be fed into the relief valve and, owing to the pressure relief, can be supplied, at least partially as liquefied hydrogen to the storage tank for liquefied hydrogen.

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Номер записи: 22

16-01-2014 дата публикации

Methods for separating hydrocarbon gases

Номер: US20140013796A1

Автор: Ronald D. Key, Zaheer I. Malik

Принадлежит: Linde Process Plants Inc

A process for separating a hydrocarbon gas into a fraction containing a predominant portion of the methane or ethane and lighter components and a fraction containing a predominant portion of the C2 or C3 and heavier components in which the feed gas is treated in one or more heat exchange and expansion steps; partly condensed feed gas is directed into a separator wherein a first residue vapor is separated from a C2 or C3-containing liquid; and C2 or C3-containing liquids at substantially the pressure of separation are directed into a distillation column wherein the liquid is separated into a second residue to recover a C2 or C3-containing product. A portion of the vapor and/or a portion of the liquid from the first hydrocarbon vapor/liquid separation is further cooled and introduced into a fractionation column to increase the C2 or C3 and heavier hydrocarbons recovery from the natural gas stream.

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Номер записи: 23

16-01-2014 дата публикации

System and Method for Removing Excess Nitrogen from Gas Subcooled Expander Operations

Номер: US20140013797A1

Автор: Rayburn C. Butts

Принадлежит: Individual

A system and method for removing nitrogen from an intermediate stream in a gas subcooled process operation that processes natural gas into a sales gas stream and a natural gas liquids stream. The system and method of the invention are particularly suitable for use with gas subcooled process operations where the sales gas stream exceeds pipeline nitrogen specifications by up to about 3%, such as for reducing the nitrogen content of sales gas streams to levels permissible for pipeline transport.

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Номер записи: 24

03-04-2014 дата публикации

Cryocooler-based gas scrubber

Номер: US20140090404A1

Автор: Jost Diederichs, Michael Bancroft Simmonds, Ronald Sager

Принадлежит: Quantum Design Inc

A cryocooler-based gas scrubber, or cryocooler-based gas purifier, utilizes the cooling power of a cryocooler to cool and condense cryogen gas forming coalesced impurities which are then filtered through a filter matrix, such as for example a fiberglass filter matrix. The scrubber may further comprise a counter-flow heat exchanger for warming the purified gas prior to dispensing at an outlet for storage or consumption.

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Номер записи: 25

05-01-2017 дата публикации

Systems And Methods For Using Multiple Cryogenic Hydraulic Turbines

Номер: US20170003072A1

Автор: Griffith Todd S., Holt Christopher G.

Принадлежит:

There is provided a system and method for producing liquefied natural gas (LNG). An exemplary method includes flowing a high-pressure stream of LNG through a first series of liquid turbines. The exemplary method also includes generating electricity by reducing the pressure of the high-pressure stream of LNG to form a low-pressure stream of LNG. The exemplary method additionally includes bypassing any one the liquid turbines that has a failure while continuing to produce electricity from the first series. 1. A method for generating electricity from liquid turbines , comprising:{'sup': 'st', 'flowing a high-pressure liquid stream through a first plurality of n liquid turbines coupled in a first series, wherein, after a first turbine in the series, an inlet of each of the second through the n-1liquid turbines is coupled to an outlet of a proceeding liquid turbine;'}generating electricity from the first series by removing energy from the high-pressure liquid stream to form a low-pressure liquid stream;bypassing any one of the first plurality of liquid turbines that has a failure while continuing to produce electricity with the remaining turbines of the first series; andoperating the first plurality of liquid turbines in the first series that are not bypassed to maintain a pressure and flow rate of the low-pressure liquid stream.2. The method of claim 1 , further comprising:maintaining the total electrical output from the first series as a constant value when a liquid turbine is bypassed.3. The method of claim 1 , further comprising:maintaining the temperature of the low-pressure liquid stream from the first series when a liquid turbine is bypassed.4. The method of claim 1 , further comprising:removing a portion of the high-pressure liquid stream prior to the first series;{'sup': 'st', 'flowing the portion through a second plurality of n liquid turbines coupled in a second series, wherein, after a first turbine in the series, an inlet of each of the second through the n- ...

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Номер записи: 26

05-01-2017 дата публикации

METHOD AND APPARATUS FOR SEPARATION AT SUBAMBIENT TEMPERATURE

Номер: US20170003073A1

Автор: Davidian Benoit

Принадлежит: L'Air Liquide, Societe Anonyme opu l'Etude et Exploitation des Procedes Georges Claude

A method for separating a gas mixture at subambient temperature, in which a gas mixture is sent to a heat-insulated chamber, cooled and separated in a column, and placed inside the chamber so as to produce at least two fluids, each of which is enriched with a component from the gas mixture. At least one fluid from the method can be heated inside the chamber or vaporized via heat exchange with at least one heating member including at least one element having magnetocaloric properties and built into a circuit configured to conduct a magnetic flux. The element is alternatingly in thermal contact with a cold source, made up of the fluid to be heated, and a hot source, made up of a source hotter than the fluid to be heated, and variation in the magnetic flux via the magnetocaloric effect generates electrical and/or mechanical energy. 115-. (canceled)16. A process for separating a gas mixture at subambient temperature , wherein the process comprises the steps of:sending a gas mixture to a thermally insulated chamber under conditions effective for cooling and separating the gas mixture within a column that is placed inside the thermally insulated chamber, so as to produce at least two fluids, each of which is enriched with a component of the gas mixture;heating at least one of the two fluids inside the thermally insulated chamber by heat exchange with at least one heating member, wherein the at least one heating member comprises at least one element having magnetocaloric properties and integrated into a circuit configured to conduct a magnetic flux, said at least one element being alternatingly in thermal contact with a cold source made up of the fluid to be heated and a hot source made up of the surrounding environment or another source that is hotter than the fluid to be heated; andgenerating electrical and/or mechanical energy from the variation in the magnetic flux via the magnetocaloric effect,wherein at least one of the two fluids to be heated being at least one part ...

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Номер записи: 27

02-01-2020 дата публикации

RAW MATERIAL GAS LIQUEFYING DEVICE AND METHOD OF CONTROLLING THIS RAW MATERIAL GAS LIQUEFYING DEVICE

Номер: US20200003070A1

Автор: Kariya Daisuke, Kimura Yosuke, MIWA Yasuo, MIYAZAKI Hidetaka, Saito Yuichi, SAKAMOTO Tomohiro, YAMAZOE Naotaka

Принадлежит: KAWASAKI JUKOGYO KABUSHIKI KAISHA

A raw material gas liquefying device includes a feed line which feeds a raw material gas, a refrigerant circulation line which circulates a refrigerant, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit, a heat exchanger which exchanges heat between the raw material gas and the refrigerant, a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen, and a controller which manipulates the opening rate of the expansion unit entrance value and performs a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, at start-up and stop of the expansion unit. 1. raw material gas liquefying device comprising:a feed line which feeds a raw material gas whose boiling temperature is lower than a boiling temperature of nitrogen;a refrigerant circulation line which circulates a refrigerant for cooling the raw material gas, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit;a heat exchanger which exchanges heat between the raw material gas and the refrigerant;a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen;an expansion unit rotation speed sensor which detects a rotation speed of the expansion unit; anda controller which generates an opening rate command for the expansion unit entrance valve by performing a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, ...

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Номер записи: 28

04-01-2018 дата публикации

CONFIGURATIONS AND METHODS FOR SMALL SCALE LNG PRODUCTION

Номер: US20180003429A1

Автор: Mak John

Принадлежит:

An LNG plant comprises a cold box and a refrigeration unit fluidly coupled with a plurality of heat exchanger passes in the cold box. The refrigeration unit is configured to provide a first refrigerant stream to a first heat exchanger pass of the plurality of heat exchanger passes at a first pressure, a second refrigerant stream to a second heat exchanger pass at a second pressure, and a third refrigerant stream to a third heat exchanger pass at a third pressure. The second refrigerant stream comprises a first portion of the first refrigerant stream, and the third refrigerant stream comprises a second portion of the first refrigerant stream. The second pressure and the third pressure are both below the first pressure. The cold box is configured to produce LNG from a natural gas feed stream to the cold box using a refrigeration content from the refrigeration unit. 1. An LNG plant comprising:a cold box comprising a plurality of heat exchanger passes; and a first compressor unit configured to compress a refrigerant to produce a compressed refrigerant at a first pressure;', 'a first heat exchanger pass of the plurality of heat exchanger passes, wherein the first heat exchanger pass is configured to pass the compressed refrigerant through the cold box to cool the compressed refrigerant;', 'a splitter configured to separate the cooled, compressed refrigerant into a first portion and a second portion;', 'a first expander configured to receive the first portion from the splitter and expand the first portion to a second pressure, wherein the second pressure is less than the first pressure;', 'a second expander configured to receive the second portion from the splitter and expand the second portion to a third pressure, wherein the third pressure is less than the second pressure;', 'a second heat exchanger pass of the plurality of heat exchanger passes configured to pass the first portion at the second pressure through the cold box;', 'a third heat exchanger pass of the ...

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Номер записи: 29

04-01-2018 дата публикации

METHOD FOR THE PRODUCTION OF AIR GASES BY THE CRYOGENIC SEPARATION OF AIR

Номер: US20180003433A1

Автор: KONG Paul, PHAM-HUY Minh, YIP Wendy

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the production of air gases by the cryogenic separation of air can include the steps of sending a purified and compressed air stream to a cold box under conditions effective for cryogenically separating the air stream into an oxygen product and nitrogen using a system of columns, wherein the purified and compressed air stream is at a feed pressure when entering the system of columns; withdrawing the oxygen product at a product pressure; delivering the oxygen product at a delivery pressure to an oxygen pipeline, wherein the oxygen pipeline has a pipeline pressure; wherein during the second mode of operation, the method can include monitoring the pipeline pressure; and reducing the difference between the pipeline pressure and the delivery pressure. By operating the method in a dynamic fashion, a power savings can be realized in instances in which the pipeline pressure deviates from its highest value. 1. A method for the production of air gases by the cryogenic separation of air , the method comprising the steps of:{'sub': 'o', 'a) compressing air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) purifying the compressed humid air stream of water and carbon dioxide within a front end purification system to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) compressing a first portion of the dry air stream in a booster compressor to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) introducing a second portion of the dry air stream and the boosted air stream to a cold box under conditions effective to separate air to form an air gas product, wherein the air gas product is selected from the group consisting of oxygen, nitrogen, and combinations thereof;{'sub': 'P1', 'e) withdrawing the air gas product from the cold ...

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Номер записи: 30

04-01-2018 дата публикации

APPARATUS FOR THE PRODUCTION OF AIR GASES BY THE CRYOGENIC SEPARATION OF AIR

Номер: US20180003434A1

Автор: KONG Paul, PHAM-HUY Minh, YIP Wendy

Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

An apparatus for the production of air gases by the cryogenic separation of air can include a cold box having a heat exchanger, and a system of columns; a pressure monitoring device; and a controller. The cold box can be configured to receive a purified and compressed air stream under conditions effective for cryogenically separating the air stream to form an air gas product. The apparatus may also include means for transferring the air gas product from the cold box to an air gas pipeline. The pressure monitoring device is configured to monitor the pipeline pressure, and the controller is configured to adjust the product pressure of the air gas product coming out of the cold box based upon the pipeline pressure. 1. An apparatus for the production of air gases by the cryogenic separation of air , the apparatus comprising:{'sub': 'o', 'a) a main air compressor configured to compress air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) a front end purification system configured to purify the compressed humid air stream of water and carbon dioxide to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) a booster compressor in fluid communication with the front end purification system, wherein the booster compressor is configured to compress a first portion of the dry air stream to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) a cold box comprising a main heat exchanger, a system of columns having a double column composed of a lower pressure column and a higher pressure column, a condenser disposed at a bottom portion of the lower pressure column, and a liquid oxygen pump, wherein the cold box is configured to receive the boosted air stream and a second portion of the dry air stream under conditions effective to separate air ...

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Номер записи: 31

04-01-2018 дата публикации

APPARATUS FOR OPERATING AN AIR SEPARATION PLANT

Номер: US20180003435A1

Автор: KONG Paul, PHAM-HUY Minh, YIP Wendy

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

An apparatus for the production of air gases with variable liquid production by the cryogenic separation of air can include a cold box having a heat exchanger, and a system of columns; a pressure monitoring device; and a controller. The cold box can be configured to receive a purified and compressed air stream under conditions effective for cryogenically separating the air stream to form an air gas product. The apparatus may also include means for transferring the air gas product from the cold box to an air gas pipeline. The pressure monitoring device is configured to monitor the pipeline pressure, and the controller is configured to adjust the product pressure of the air gas product coming out of the cold box based upon the pipeline pressure and to further adjust liquid production from the cold box based on the adjusted product pressure. 1. An apparatus for the production of air gases by the cryogenic separation of air , the apparatus comprising:{'sub': 'o', 'a) a main air compressor configured to compress air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) a front end purification system configured to purify the compressed humid air stream of water and carbon dioxide to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) a booster compressor in fluid communication with the front end purification system, wherein the booster compressor is configured to compress a first portion of the dry air stream to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) a cold box comprising a main heat exchanger, a system of columns having a double column composed of a lower pressure column and a higher pressure column, a condenser disposed at a bottom portion of the lower pressure column, and a liquid oxygen pump, wherein the cold box is ...

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Номер записи: 32

04-01-2018 дата публикации

METHOD FOR OPERATING AN AIR SEPARATION PLANT

Номер: US20180003437A1

Автор: KONG Paul, PHAM-HUY Minh, YIP Wendy

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the production of air gases with variable liquid production by the cryogenic separation of air can include the steps of sending a purified and compressed air stream to a cold box under conditions effective for cryogenically separating the air stream into an oxygen product and nitrogen using a system of columns, wherein the purified and compressed air stream is at a feed pressure when entering the system of columns; withdrawing the oxygen product at a product pressure; delivering the oxygen product at a delivery pressure to an oxygen pipeline, wherein the oxygen pipeline has a pipeline pressure; wherein during the second mode of operation, the method can include monitoring the pipeline pressure; reducing the difference between the pipeline pressure and the delivery pressure; and adjusting liquid production from the cold box. By operating the method in a dynamic fashion, additional liquid production can be realized in instances in which the pipeline pressure deviates from its highest value. 1. A method for the production of air gases with variable liquid production by the cryogenic separation of air , the method comprising the steps of:{'sub': 'o', 'a) compressing air to a pressure suitable for the cryogenic rectification of air to produce a compressed humid air stream, the compressed humid air stream having a first pressure P;'}b) purifying the compressed humid air stream of water and carbon dioxide within a front end purification system to produce a dry air stream having reduced amounts of water and carbon dioxide as compared to the compressed humid air stream;{'sub': 'B1', 'c) compressing a first portion of the dry air stream in a booster compressor to form a boosted air stream, the boosted air stream having a first boosted pressure P;'}d) introducing a second portion of the dry air stream and the boosted air stream to a cold box under conditions effective to separate air to form an air gas product, wherein the air gas product is selected from the ...

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Номер записи: 33

02-01-2020 дата публикации

DEVICE AND METHOD FOR LIQUEFYING A NATURAL GAS AND SHIP COMPRISING SUCH A DEVICE

Номер: US20200003488A1

Автор: GUEDACHA Hicham

Принадлежит:

The device () for liquefying a natural gas comprises: —a first centrifugal compressor (), —a fractionating means (), —a second centrifugal compressor (), —a first heat exchange body (), —a second heat exchange body () and —a return conduit () leading to the first compressor, —upstream of an inlet () in the first exchange body, a third heat exchange body (), —a third centrifugal compressor (), the first and third centrifugal compressors being actuated by a single common turbine (), —a casing () common to the first compressor and the third compressor, —a cooling means () and —a transfer conduit () leading to the third exchange body. 2. A device according to claim 1 , wherein the turbine actuating the first and third compressors are coupled mechanically.3. A device according to claim 2 , wherein the turbines are combined.4. A device according to claim 1 , which comprises:a separator of a gas fraction and a liquid fraction of the compressed light phase, the fourth compressor compressing the separated gas fraction,a regulator for the liquid fraction of the light phase heated in the second exchange body,the turbine of the fourth compressor being actuated by the expansion energy.5. A device according to claim 1 , wherein the second chemical compound comprises a pure substance comprising nitrogen claim 1 , propane and/or ammonia.6. A device according to claim 1 , wherein the first cooling mixture comprises nitrogen and methane and at least one compound amongst:ethylene;ethane;propane; and/orbutane.7. A device according to claim 1 , which comprises:a regulator for the liquefied natural gas,a collector for the evaporation gas produced during the expansion of the gas in the regulator, anda conduit for injecting the evaporation gas at the inlet of the second exchange body.8. A device according to claim 1 , wherein the means for cooling the second compound comprises an outlet for the second compound claim 1 , the device comprising claim 1 , between said outlet and the third ...

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Номер записи: 34

12-01-2017 дата публикации

Membrane-Based Gas Separation Processes to Separate Dehydrogenation Reaction Products

Номер: US20170008822A1

Автор: Gottschlich Douglas, Ng Alvin, Su Paul, Thomas-Droz Sylvie, Wynn Nicholas P., Zhou Meijuan

Принадлежит: MEMBRANE TECHNOLOGY AND RESEARCH, INC.

Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions. 1. A process for treating a raw product stream from dehydrogenation of a light paraffin , said raw product stream comprising at least one paraffin component , one olefin component and hydrogen , comprising the steps of:(a) compressing the raw product stream to create a compressed stream having a first hydrocarbon dewpoint;(b) partially condensing the compressed stream, including cooling and separating the compressed stream into a hydrocarbon condensate stream and an uncondensed gas stream;(c) withdrawing a first portion of the uncondensed gas stream as a purge stream;(d) heating a second portion of the uncondensed gas stream;(e) separating the second portion of the uncondensed gas stream from step (d) using a first membrane to remove a hydrogen-rich permeate gas stream and create a hydrocarbon-enriched residue gas stream having a first residue hydrocarbon dewpoint; and(f) recirculating the hydrocarbon-enriched residue gas stream back to a point in the process upstream of step (b).2. The process of claim 1 , wherein the olefin component is propylene.3. The process of claim 1 , wherein the olefin component is iso-butene.4. The process of claim 1 , wherein step (b) uses a water coolant.5. The process of claim 1 , wherein step (b) uses a refrigerant coolant.6. The process of claim 1 , wherein the compressed stream in step (b) is cooled to a temperature no lower than −30° C.7. The process of claim 1 , wherein step (b) reduces the dewpoint of the compressed stream between 20° C. and 50° C.8. The process of claim 1 , wherein ...

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Номер записи: 35

14-01-2016 дата публикации

Methanol to olefins process

Номер: US20160009609A1

Автор: Stephen De Haan

Принадлежит: Lummus Technology Inc

A process for chilling ethylene to required storage temperatures is disclosed, the process including: cooling an ethylene product from at least one of an ethylene production process and an ethylene recovery process via indirect heat exchange with a coolant at a temperature less than about −100° C. to decrease the temperature of the ethylene product; mixing a portion of the cooled ethylene product with methane to form the coolant; expanding at least one of the coolant, the methane, and the portion of the cooled ethylene to reduce a temperature of the coolant to less than −100° C. prior to the cooling; and feeding the heat exchanged coolant to at least one of the ethylene production process, the ethylene recovery process, and an open-loop refrigeration system.

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Номер записи: 36

12-01-2017 дата публикации

Systems and Methods for the Production of Liquefied Natural Gas Using Liquefied Natural Gas

Номер: US20170010041A1

Автор: Gupte Parag A., Huntington Richard A., JR. Fritz, Pierre

Принадлежит:

Described herein are systems and processes to produce liquefied nitrogen (LIN) using liquefied natural gas (LNG) as the refrigerant. The LIN may be produced by indirect heat exchange of at least one nitrogen gas stream with at least two LNG streams within at least one heat exchanger where the LNG streams are at different pressures. 1. A method for producing a liquefied first gas stream at a gas processing facility comprising:(a) providing a first gas stream;(b) providing a liquefied second gas stream, where the second gas is different than the first gas and where the liquefied second gas stream is produced from the liquefaction of a second gas stream at a location that is different from the gas processing facility;(c) splitting the liquefied second gas stream into at least a first liquefied second gas stream and a second liquefied second gas stream;(d) reducing the pressure of the first liquefied second gas stream such that the pressure of the first liquefied second gas stream is less than that of the second liquefied second gas stream;(e) liquefying the first gas stream to form a liquefied first gas stream by indirect heat exchange of the first gas stream with the first liquefied second gas stream and the second liquefied second gas stream;(f) vaporizing at least a portion of the first liquefied second gas stream to form a first second gas stream;(g) vaporizing at least a portion of the second liquefied second gas stream to form a second second gas stream;(h) compressing at least one of the first second gas stream and the second second gas stream to form a compressed second gas stream.2. A method for producing a liquefied nitrogen gas (LIN) stream at a liquid natural gas (LNG) regasification facility comprising:(a) providing a nitrogen gas stream;(b) providing at least two LNG streams where the pressures of each LNG stream are independent and different from each other;(c) liquefying the nitrogen gas stream by indirect heat exchange of the nitrogen gas stream with ...

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Номер записи: 37

12-01-2017 дата публикации

Mixed Refrigerant System and Method

Номер: US20170010043A1

Автор: Ducote, JR. DOUGLAS A., Podolski James

Принадлежит:

A system and method for cooling a gas using a mixed refrigerant includes a compressor system and a heat exchange system, where the compressor system may include an interstage separation device or drum with no liquid outlet, a liquid outlet in fluid communication with a pump that pumps liquid forward to a high pressure separation device or a liquid outlet through which liquid flows to the heat exchanger to be subcooled. In the last situation, the subcooled liquid is expanded and combined with an expanded cold temperature stream, which is a cooled and expanded stream from the vapor side of a cold vapor separation device, and subcooled and expanded streams from liquid sides of the high pressure separation device and the cold vapor separation device, or combined with a stream formed from the subcooled streams from the liquid sides of the high pressure separation device and the cold vapor separation device after mixing and expansion, to form a primary refrigeration stream. 1. A system for cooling a gas with a mixed refrigerant comprising:a. a main heat exchanger including a warm end and a cold end with a feed stream cooling passage extending therebetween, the feed stream cooling passage being adapted to receive a feed stream at the warm end and to convey a cooled product stream out of the cold end, said main heat exchanger also including a low pressure liquid cooling passage, a high pressure vapor cooling passage, a high pressure liquid cooling passage, a cold separator vapor cooling passage, a cold separator liquid cooling passage and a refrigeration passage;b. a mixed refrigerant compressor system including a compressor first section having an inlet in fluid communication with an outlet of the refrigeration passage and an outlet, a first section cooler having an inlet in fluid communication with the outlet of the compressor first section and an outlet, an interstage separation device having an inlet in fluid communication with the outlet of the first section cooler and ...

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Номер записи: 38

10-01-2019 дата публикации

MODIFIED GOSWAMI CYCLE BASED CONVERSION OF GAS PROCESSING PLANT WASTE HEAT INTO POWER AND COOLING WITH FLEXIBILITY

Номер: US20190010832A1

Автор: Kamel Akram Hamed Mohamed, Noureldin Mahmoud Bahy Mahmoud

Принадлежит: Saudi Arabian Oil Company

A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and a modified Goswami energy conversion system. The modified Goswami energy conversion system includes a first group of heat exchangers configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream; and a second group of heat exchangers configured to heat a second portion of the working fluid. The modified Goswami energy conversion system includes a rectifier configured to receive the heated first and second portions of the working fluid and a third portion of the working fluid and to output an overhead discharge stream and a liquid stream, the third portion of the working fluid being at a lower temperature than the heated first and second portions of the working fluid. The modified Goswami energy conversion system includes a cooling subsystem including one or more cooling elements configured to cool a chilling fluid stream by exchange with the overhead discharge stream; and a turbine configured to generate power from the liquid stream of the working fluid. 1. (canceled)2. A method comprising:heating a first portion of a working fluid using heat recovered from a heat source in a crude oil associated gas processing plant;heating a second portion of the working fluid by exchange with a liquid stream of the working fluid;receiving the heated first and second portions of the working fluid in a rectifier;outputting, from the rectifier, a vapor stream of the working fluid and the liquid stream of the working fluid;cooling a chilling fluid stream in a cooling element by exchange with at least a portion of the vapor stream of the working fluid output from the rectifier; andgenerating power from the liquid stream of the working fluid by a turbine.3. The method of claim 2 , wherein the turbine is a first turbine claim 2 , and wherein the method comprises ...

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Номер записи: 39

03-02-2022 дата публикации

LARGE LIQUID OXYGEN AND LIQUEFIED NATURAL GAS PRODUCTION PROCESS

Номер: US20220034584A1

Автор: Guillard Alain, TURNEY Michael A.

Принадлежит:

A process for co-producing a liquid oxygen and a liquefied hydrocarbon stream, including introducing a gaseous hydrocarbon stream and a gaseous nitrogen stream into a liquefier, thereby producing a liquefied hydrocarbon stream and a liquid nitrogen stream, liquefying a gaseous oxygen stream, wherein at least a portion of the required refrigeration is obtained from the liquid nitrogen stream. Wherein the liquefied hydrocarbon stream and the liquefied gaseous oxygen stream have mass flow rates. The liquid oxygen stream may be produced in an aft separation unit, wherein at least a portion of the required refrigeration is obtained from the liquid nitrogen stream. 1. A process for co-producing a liquid oxygen and a liquefied hydrocarbon stream , comprising:introducing a gaseous hydrocarbon stream and a gaseous nitrogen stream into a liquefier, thereby producing a liquefied hydrocarbon stream and a liquid nitrogen stream,liquefying a gaseous oxygen stream, wherein at least a portion of he required refrigeration is obtained from the liquid nitrogen stream, wherein the liquefied hydrocarbon stream and the liquefied gaseous oxygen stream have mass flow rates.2. The process of claim 1 , wherein the ratio of mass flow rates of the liquefied gaseous oxygen stream and the liquefied hydrocarbon stream is between 2 to 5.3. The process of claim 1 , wherein the ratio of mass flow rates of the liquefied gaseous oxygen stream and the liquefied hydrocarbon stream is between 3 to 4.4. The process of claim 1 , wherein the liquefier uses a dual refrigerant liquefaction process claim 1 , comprising a first refrigerant and a secondary refrigerant.5. The process of claim 4 , wherein the first refrigerant is nitrogen or neon or a mixture of neon and nitrogen.6. The process of claim 4 , wherein the secondary refrigerant is a hydrocarbon mixed refrigerant.7. A process for co-producing a liquid oxygen and a liquefied hydrocarbon stream claim 4 , comprising:introducing a gaseous hydrocarbon ...

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Номер записи: 40

19-01-2017 дата публикации

Liquefied Natural Gas Production System and Method With Greenhouse Gas Removal

Номер: US20170016667A1

Автор: Fritz Pierre, Jr., Parag A. GUPTE, Richard A. Huntington, Robert D. Denton

Принадлежит: Individual

Described herein are systems and processes to produce liquefied natural gas (LNG) using liquefied nitrogen (LIN) as the refrigerant. Greenhouse gas contaminants are removed from the LIN using a greenhouse gas removal unit.

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Номер записи: 41

19-01-2017 дата публикации

Increasing Efficiency In An LNG Production System By Pre-Cooling A Natural Gas Feed Stream

Номер: US20170016668A1

Автор: Denton Robert D., Gupte Parag A., Huntington Richard A., JR. Fritz, Pierre

Принадлежит:

Described herein are systems and processes to produce liquefied natural gas (LNG) using liquefied nitrogen (LIN) as the refrigerant. Greenhouse gas contaminants are removed from the LIN using a greenhouse gas removal unit. The LNG is compressed prior to being cooled by the LIN. 1. A liquefied natural gas production system , the system comprising:a natural gas stream from a supply of natural gas;a refrigerant stream from a refrigerant supply;at least one heat exchanger that exchanges heat between the refrigerant stream and the natural gas stream to at least partially vaporize the refrigerant stream and at least partially condense the natural gas stream;a natural gas compressor that compresses the natural gas stream to a pressure of at least to 135 bara to form a compressed natural gas stream;a natural gas cooler that cools the compressed natural gas stream after being compressed by the natural gas compressor; anda natural gas expander that expands the compressed natural gas to a pressure less than 200 bara, but no greater than the pressure to which the natural gas compressor compresses the natural gas stream, after being cooled by the natural gas cooler;wherein the natural gas expander is connected to the at least one heat exchanger to supply natural gas thereto.2. The liquefied natural gas production system of claim 1 , wherein the natural gas compressor compresses the natural gas stream to a pressure greater than 200 bara.3. The liquefied natural gas production system of claim 1 , wherein the natural gas expander expands the compressed natural gas stream to a pressure less than 135 bara.4. The liquefied natural gas production system of claim 1 , wherein the at least one heat exchanger comprises a first heat exchanger claim 1 , and further comprising a second heat exchanger that cools the natural gas stream prior to the natural gas stream being compressed in the natural gas compressor.5. The liquefied natural gas production system of claim 4 , wherein the ...

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Номер записи: 42

17-01-2019 дата публикации

Organic Rankine Cycle Based Conversion of Gas Processing Plant Waste Heat into Power and Cooling

Номер: US20190017418A1

Автор: Kamel Akram Hamed Mohamed, Noureldin Mahmoud Bahy Mahmoud

Принадлежит: Saudi Arabian Oil Company

A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and an Organic Rankine cycle energy conversion system. The Organic Rankine cycle energy conversion system includes a heat exchanger configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream; and a cooling subsystem including one or more cooling elements each configured to cool one or more of a process stream from the crude oil associated gas processing plant and a cooling water stream for ambient air cooling by exchange with a second portion of the working fluid. The Organic Rankine cycle energy conversion system includes an ejector configured to receive the second portion of the working fluid from the cooling subsystem and a third portion of the working fluid; a turbine and a generator configured to generate power by expansion of a fourth portion of the working fluid; and a cooling element configured to cool a stream of working fluid including an output stream of working fluid from the ejector and the expanded fourth portion of the working fluid from the turbine and generator. 129-. (canceled)30. A method comprising:heating a heating fluid stream via a waste heat recovery exchanger by exchange with a heat source in a crude oil associated gas processing plant; heating a first portion of a working fluid by exchange with the heated heating fluid stream via an energy conversion heat exchanger, the working fluid comprising iso-butane;', 'cooling one or more of a process stream from the crude oil associated gas processing plant and a cooling water stream for ambient air cooling by exchange with a second portion of the working fluid in a cooling subsystem;', 'in an ejector, combining the second portion of the working fluid from the cooling subsystem and a third portion of the working fluid, the third portion of the working fluid being a portion of the ...

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Номер записи: 43

26-01-2017 дата публикации

METHOD AND INSTALLATION FOR STORING AND RECOVERING ENERGY

Номер: US20170022897A1

Автор: Alekseev Alexander, Bergins Christian, Stiller Christoph, Stöver Brian

Принадлежит:

A method and installation for storing and recovering energy, according to which a condensed air product is formed in an energy storage period, and in an energy recovery period, a pressure flow is formed and is expanded to produce energy using at least part of the condensed air product. For the formation of the condensed air product: the compression of air in an air conditioning unit, at least by means of at least one isothermally operated compressor device and the adsorptive cleaning of the air by means of at least one adsorptive cleaning device at a hyperbaric pressure level. 1. A method for storing and recovering energy in which , in an energy storage period , an air liquefaction product is formed and , in an energy recovery period , a pressurized stream is formed and expanded to perform work by using at least part of the air liquefaction product , the method comprising , compressing air in an air conditioning unit, at least by means of at least one isothermally operated compressor device, and adsorptively purifying the air by means of at least one adsorptive purification device at a superatmospheric pressure level,', 'liquefying the compressed and adsorptively purified air, starting from a temperature level in a range of 0 to 50° C., in a first fraction in a fixed-bed cold storage unit and in a second fraction in a counterflow heat exchanger unit at a liquefaction pressure level in a range of 40 to 100 bara, and', 'subsequently expanding the liquefied air in at least one cold production unit,, 'for the formation of the air liquefaction product,'} producing a vaporization product from at least part of the liquefaction product at a vaporization pressure level, which deviates by no more than 5 bar from the liquefaction pressure level, in the fixed-bed cold storage unit, and', 'forming a fluid stream from at least part of the vaporization product and conducting it through at least one combustion device, in which a fuel is burned., 'and, for the formation of the ...

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Номер записи: 44

26-01-2017 дата публикации

CONFIGURATIONS AND METHODS FOR NITROGEN REJECTION, LNG AND NGL PRODUCTION FROM HIGH NITROGEN FEED GASES

Номер: US20170023293A1

Автор: Mak John

Принадлежит:

Variable N2 content in feed gas ranging from 3 mol % to 50 mol % can be rejected from the process using a feed exchanger that is fluidly coupled with a cold separator and a single fractionation column to produce a nitrogen vent stream and streams that are suitable to be further processed for NGL recovery and LNG production. 1. A plant with a nitrogen removal unit and a natural gas liquids recovery unit , comprising:a feed gas source configured to provide a hydrocarbonaceous feed gas having a CO2 content of equal or less than 50 ppmv, a water content of equal or less than 0.1 ppmv, and a nitrogen content of at least 3 mol %;a heat exchanger configured to receive and cool the hydrocarbonaceous feed gas to a temperature that condenses C3+ components in the hydrocarbonaceous feed gas;a phase separator configured to receive the cooled hydrocarbonaceous feed gas and to separate the condensed C3+ components as a liquid stream from a vapor stream comprising C1, C2, and nitrogen;a conduit fluidly coupled to the phase separator and configured to transport the liquid stream to a natural gas liquids recovery unit;a refluxed fractionation column configured to receive the vapor stream and to produce a nitrogen-enriched overhead product and a nitrogen-depleted bottom product;a reflux condenser configured to partially condense the nitrogen-enriched overhead product using refrigeration of a pressure-reduced first portion of the nitrogen-depleted bottom product to thereby produce a liquid reflux to the fractionation column and a gaseous nitrogen vent stream; anda natural gas liquefaction unit fluidly coupled to the refluxed fractionation column and configured to receive the first portion of the nitrogen-depleted bottom product and a second portion of the nitrogen-depleted bottom product.2. The plant of claim 1 , wherein the heat exchanger is further configured to receive and cool the vapor stream to at least partially condense the vapor stream.3. The plant of claim 1 , wherein the ...

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Номер записи: 45

25-01-2018 дата публикации

METHOD FOR RECOVERING HELIUM

Номер: US20180023888A1

Автор: BAUER Heinz, BUB Andreas, Gwinner Martin, HERTEL Christoph

Принадлежит:

A method for recovering a helium product fraction () from a nitrogen- and helium-containing feed fraction () is described, wherein the nitrogen- and helium-containing feed fraction () is partially condensed (E), separated into a first helium-enriched fraction () and a first nitrogen-enriched fraction () and the former is cleaned again in an adsorptive manner. 2. The method according to claim 1 , characterized in that the third nitrogen-enriched fraction is at least partially work-performing expanded.3. The method according to claim 1 , characterized in that the separation column is operated under a pressure of 7 to 20 bar.4. The method according to claim 1 , characterized in that the third nitrogen-enriched fraction contains at least 50% of the nitrogen contained in the first nitrogen-enriched fraction.5. The method according to claim 1 , characterized in that at least a sub-flow of the second nitrogen-enriched fraction is evaporated against the nitrogen- and helium-containing feed fraction to be partially condensed under a pressure of less than 3 bar.6. The method according to claim 1 , characterized in that the adsorptive cleaning process is a (V)PSA and/or TSA process.7. The method according to claim 3 , characterized in that the separation column is operated under a pressure of 10 to 15 bar. The invention relates to a method for recovering a helium product fraction from a nitrogen- and helium-containing feed fraction, whereinThe term “helium product fraction” be comprised of highly purified helium, the concentration and contamination of which do not exceed a value of 100 vppm, preferably of 10 vppm.The term “nitrogen- and helium-containing feed fraction” be understood as a fraction, which contains 1 to 20 mol-% helium and 80 to 99 mol-% nitrogen. Further, this feed fraction can contain 0.1 to 2 mol-% methane and traces of hydrogen, argon and/or other noble gases.Currently, helium is obtained almost exclusively from a mixture of volatile natural gas components, ...

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Номер записи: 46

25-01-2018 дата публикации

Heavy Hydrocarbon Removal System for Lean Natural Gas Liquefaction

Номер: US20180023889A1

Автор: Annemarie Ott Weist, Christopher Michael Ott, Fei Chen, Mark Julian Roberts

Принадлежит: Air Products and Chemicals Inc

A system and method for integrated heavy hydrocarbon removal in a liquefaction system having a lean natural gas source. An economizer located between a main cryogenic heat exchanger and a reflux drum is provided to cool an overhead vapor stream against a partially condensed stream. In addition, pressure of the natural gas feed stream is maintained into a scrub column. A pressure drop is provided by a valve located between the economizer and the reflux drum on a partially condensed stream withdrawn from the cold end of the warm section of the main cryogenic heat exchanger.

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Номер записи: 47

01-02-2018 дата публикации

PROCESS AND PLANT FOR THE PURIFICATION OF RAW GASES BY MEANS OF PHYSICAL GAS SCRUBBING

Номер: US20180028961A1

Автор: CHAUBET Lucie, WAGNER Marc

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Exploitation des Proceds Georges Claude

A process for separating undesired, in particular acidic gas constituents from a raw gas, in particular raw synthesis gas, by absorption with cold methanol as physical detergent, wherein the methanol is cooled in a compression refrigeration machine by using a multi-component coolant. The use of the coolant according to the invention provides significant advantages with regard to the compressor capacity required in the compression refrigeration machine for the provision of a defined cooling capacity. 110-. (canceled)11. A process for the separation of undesired gas constituents , in particular carbon dioxide and hydrogen sulfide , from a raw gas , in particular raw synthesis gas , with methanol as detergent , the process comprising the following steps:a) supplying the raw gas to the absorption apparatus;b) cooling a methanol partial stream withdrawn from the absorption apparatus by indirect heat exchange with a coolant in a heat exchanger arranged outside the absorption apparatus and recirculating the cooled methanol partial stream into the absorption apparatus, wherein the coolant is cooled in a compression refrigeration machine which includes at least one compression stage;c) contacting the raw gas with the cooled methanol partial stream and with at least one further methanol partial stream recirculated from downstream process stages in the absorption apparatus, wherein a process gas stream depleted of undesired gas constituents and a loaded methanol partial stream enriched in undesired gas constituents is obtained;d) multistage regeneration of the loaded methanol partial stream by pressure decrease and/or temperature increase, between or downstream of which optionally further absorption steps can be carried out for separating further undesired gas constituents from the process gas stream, wherein at least one regenerated methanol partial stream is obtained, which is recirculated to step c) and wherein gas streams containing carbon dioxide and hydrogen sulfide are ...

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Номер записи: 48

02-02-2017 дата публикации

SYSTEM AND METHOD FOR LIQUEFACATION OF NATURAL GAS

Номер: US20170030633A1

Автор: Kikkawa Yoshitsugi, Liu Yu Nan, Sakai Koichiro, Truong Timothy

Принадлежит:

By using the power generated by an expander by an expansion of material gas, the outlet pressure of a compressor is increased, and a requirement on the cooling capacity of a cooler is reduced. The liquefaction system () for natural gas comprises a first expander () for generating power by expanding natural gas under pressure as material gas; a first cooling unit () for cooling the material gas depressurized by expansion in the first expander; a distillation unit () for reducing or eliminating a heavy component in the material gas by distilling the material gas cooled by the first cooling unit; a first compressor () for compressing the material gas from which the heavy component was reduced or eliminated by the distillation unit by using the power generated in the first expander; a second heat exchanger for exchanging heat between the material gas introduced into the first compressor and the material gas compressed by the first compressor; and a liquefaction unit () for liquefying the material gas compressed by the first compressor by exchanging heat with a refrigerant. 1. A method for cooling a natural gas feed comprising:a) reducing the pressure of the natural gas feed to produce a reduced pressure material gas;b) removing heavy components from the reduced pressure material gas to produce a top fraction and a bottom fraction;c) cooling the top fraction to produce a cooled top fraction;d) separating the cooled top fraction into a gas phase component and a liquid phase component;e) increasing the pressure of the gas phase component to produce a compressed material gas; andf) exchanging heat between the gas phase component and the compressed material gas to produce at least a cooled compressed material gas.2. The method of further comprising cooling the reduced pressure material gas of step (a) prior to removing heavy components in step (b).3. The method of further comprising at least partially liquefying the cooled compressed material gas of step (f).4. The method of ...

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Номер записи: 49

02-02-2017 дата публикации

AIR FRACTIONATION PLANT, OPERATING METHOD AND CONTROL FACILITY

Номер: US20170030635A1

Автор: Dowy Stefan, Pullnig Bernhard

Принадлежит:

An air fractionation plant in which a cooling water circuit having a recooling apparatus is provided for cooling compressed air, where the recooling apparatus is configured for cooling cooling water using cooling air. The recooling apparatus is configured so as to cool the cooling water, at least at a wet bulb temperature of the cooling air of more than 289 K, to a temperature which is not more than 3 K above the wet bulb temperature. A corresponding operating method and a control facility are likewise provided. 1. An air fractionation plant in which a cooling water circuit having a recooling apparatus is provided for cooling compressed air , where the recooling apparatus is configured for cooling cooling water using cooling air , characterized in that the recooling apparatus is configured so as to cool the cooling water , at least at a wet bulb temperature of the cooling air of more than 289 K , to a temperature which is not more than 3 K above the wet bulb temperature.2. The air fractionation plant according to claim 1 , wherein the recooling apparatus is configured so as to cool the cooling water to a temperature which is at least 0.5 K above the wet bulb temperature.3. The air fractionation plant according to claim 1 , wherein the recooling apparatus comprises a cooling tower.4. The air fractionation plant according to claim 3 , wherein the recooling apparatus has forced ventilation.5. The air fractionation plant according to claim 1 , wherein the cooling water circuit comprises a heat exchanger which is arranged downstream of a compressor.6. The air fractionation plant according to claim 1 , wherein a cooling zone range of from 5 to 25 K is provided.7. A method of operating an air fractionation plant in which a cooling water circuit having a recooling apparatus is provided for cooling compressed air claim 1 , where the recooling apparatus is configured for cooling cooling water using cooling air claim 1 , characterized in that the recooling apparatus is ...

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Номер записи: 50

02-02-2017 дата публикации

Method and apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption system

Номер: US20170030641A1

Автор: Neil M. Prosser, Yang Luo

Принадлежит: Praxair Technology Inc

A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having an argon rejection column and a reflux type argon condenser disposed internally within the lower pressure column. An impure argon stream is subsequently recovered from the argon rejection column and purified within an integrated adsorbent based argon refining and purification subsystem to produce product grade argon. The waste stream from the adsorbent based argon refining and purification subsystem is recycled back to the argon rejection column so as to improve the argon recovery.

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Номер записи: 51

01-02-2018 дата публикации

Carbon Dioxide Capture from Flu Gas

Номер: US20180031315A1

Автор: Baxter Larry

Принадлежит:

A method for capturing carbon dioxide from a flue gas includes (i) removing moisture from a flue gas to yield a dried flue gas; (ii) compressing the dried flue gas to yield a compressed gas stream; (iii) reducing the temperature of the compressed gas stream to a temperature Tusing a first heat exchanger; (iv) reducing the temperature of the compressed gas stream to a second temperarature Tusing a second heat exchanger stream, where T Подробнее

Номер записи: 52

05-02-2015 дата публикации

Process for liquefaction of natural gas

Номер: US20150033793A1

Автор: John L. Griffiths

Принадлежит: UOP LLC

A process and system for production of liquefied natural gas (LNG) from natural gas. The natural gas is first partially purified by removal of water and other contaminants, followed by partial chilling to freeze some contaminants and to allow for production of a purge stream to remove other contaminants. These contaminants may be removed from the stream. The process has advantages of low cost and improved removal of contaminants.

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Номер записи: 53

17-02-2022 дата публикации

SYSTEM AND METHOD FOR TREATING ASSOCIATED GAS

Номер: US20220049896A1

Автор: Boelter Tim, Cebull Brian R., Doll Stephen, Haider James L., Hope Joey, Peterson Mark, Vandelinder Austin, Wolf Wade

Принадлежит:

A system and method for treating associated gas in which a stream of raw gas is passed through safety valving, an inlet pressure control mechanism, and an inlet scrubber. Pressure/temperature data is transmitted to a control system via pressure and temperature transducers. The raw gas is sent to a gas compressor to generate pressurized gas, which is sent to an aerial cooler and a chiller heat exchanger, in which a chilling media contacts the pressurized gas. The chilled pressurized gas is sent to a vapor liquid separator to generate processed gas, which is routed through either a system backpressure valve or a pressure reducing recycle valve that directs the processed gas to the inlet scrubber. The processed gas that has passed through the system backpressure valve is delivered as fuel or routed through a backpressure regulating recycle valve that directs the processed gas to a system inlet pressure reducing valve. 1. A method for treating associated gas comprising:(a) providing a stream of raw gas;(b) passing the stream of raw gas through safety valving;(c) passing the raw gas through an inlet pressure control mechanism to control a flow rate of the raw gas;(d) passing the raw gas through an inlet scrubber;(e) transmitting pressure and temperature data for the raw gas to a control system via a pressure transducer and a temperature transducer that are located on the inlet scrubber;(f) sending the raw gas to a gas compressor to generate pressurized gas;(g) sending the pressurized gas to an aerial cooler that uses ambient air to reduce a temperature of the pressurized gas to a desired setpoint;(h) sending the pressurized gas to a chiller heat exchanger, wherein a chilling media cooled by a refrigeration system to a desired setpoint contacts the pressurized gas through the chiller heat exchanger to further reduce the temperature of the pressurized gas, thereby generating chilled pressurized gas;(i) sending the chilled pressurized gas to a vapor liquid separator to ...

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Номер записи: 54

30-01-2020 дата публикации

NATURAL GAS LIQUID FRACTIONATION PLANT WASTE HEAT CONVERSION TO POTABLE WATER USING MODIFIED MULTI-EFFECT DISTILLATION SYSTEM

Номер: US20200032677A1

Автор: Kamel Akram Hamed Mohamed, Noureldin Mahmoud Bahy Mahmoud

Принадлежит: Saudi Arabian Oil Company

A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant for production of potable water. The method includes heating a buffer fluid via a heat exchanger in to transfer heat from the NGL fractionation plant to the buffer fluid. The method includes heating water with the buffer fluid discharged from the heat exchanger to produce potable water via train distillation effects. 1. A method of recovering heat , via a waste heat recovery heat exchanger network having heat exchangers , from a Natural Gas Liquid (NGL) fractionation plant for producing potable water , the method comprising:heating a buffer fluid via a heat exchanger in the waste heat recovery network with a stream in the NGL fractionation plant, the NGL fractionation plant comprising a dehydrator, a distillation column, and a compressor; andproducing potable water via train distillation effects with heat from the buffer fluid.2. The method of claim 1 , wherein producing potable water with heat from the buffer fluid comprises heating brackish water with heat carried by the buffer fluid claim 1 , wherein a multi-effect-distillation (MED) system comprises the train distillation effects.3. The method of claim 2 , wherein the buffer fluid comprises water or oil claim 2 , and wherein the MED system comprises a modified MED system.4. The method of claim 1 , wherein the distillation column comprises a de-propanizer distillation column the stream comprises an overhead outlet stream from the de-propanizer distillation column claim 1 , or wherein the distillation column comprises a de-butanizer distillation column and the stream comprises an overhead outlet stream from the de-butanizer distillation column.5. The method of claim 1 , wherein the distillation column comprises a de-butanizer distillation column claim 1 , and wherein the stream comprises an overhead outlet stream from the de-butanizer distillation column or a bottoms outlet stream from the de-butanizer distillation column.6. The method ...

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Номер записи: 55

09-02-2017 дата публикации

Methods and systems for integration of industrial site efficiency losses to produce lng and/or lin

Номер: US20170038132A1

Автор: Alain Guillard, Michael A. Turney

Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

A method includes receiving input corresponding to a proposed configuration of a liquefaction facility and identifying a plurality of components utilized to produce LNG and/or LIN at the facility. The method includes determining an alternative configuration that is different from the proposed configuration. Determining the alternative configuration may include identifying resources accessible to a proposed location for the liquefaction facility and whether at least one of the resources accessible to the proposed location corresponds to a resource generated by a component identified by the proposed configuration, and determining whether to omit at least one component of the plurality of components identified by the proposed configuration. The method includes omitting the at least one component from the alternative configuration, and generating a report based on the proposed configuration and the alternative configuration. The report includes information indicating a difference between the proposed configuration and the alternative configuration.

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Номер записи: 56

09-02-2017 дата публикации

METHOD FOR THE INTEGRATION OF A NITROGEN LIQUEFIER AND LETDOWN OF NATURAL GAS FOR THE PRODUCTION OF LIQUID NITROGEN AND LOWER PRESSURE NATURAL GAS

Номер: US20170038133A1

Автор: FARGES Oriane, Guillard Alain, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method describing the integration of a nitrogen liquefier and letdown of natural gas for the production of liquid nitrogen and lower pressure natural gas is provided. The method may include: providing a nitrogen liquefier having a nitrogen refrigeration cycle, wherein the nitrogen liquefier comprises a nitrogen compressor, a nitrogen recycle compressor, a heat exchanger, and at least a first turbine booster and introducing a nitrogen gas stream to the nitrogen liquefier under conditions effective for liquefying the nitrogen to produce a liquid nitrogen product. The refrigeration needed to liquefy the nitrogen is provided for by the nitrogen refrigeration cycle and letdown of a high pressure natural gas stream. 1. A method for the integration of a nitrogen liquefier and letdown of natural gas for the production liquid nitrogen (“LIN”) , the method comprising the steps of:a) providing a nitrogen liquefier having a nitrogen refrigeration cycle, wherein the nitrogen liquefier comprises a nitrogen recycle compressor, a heat exchanger, and a first turbine booster;b) introducing a nitrogen gas stream to the nitrogen liquefier under conditions effective for liquefying the nitrogen to produce a liquid nitrogen product;{'sub': 'H', 'c) withdrawing a natural gas stream from a source operating at a first pressure P;'}d) purifying the natural gas stream in a purification unit to produce a purified natural gas;e) partially cooling the purified natural gas in the heat exchanger;withdrawing the partially cooled natural gas from an intermediate section of the heat exchanger;{'sub': M', 'M', 'H, 'g) expanding the partially cooled natural gas to a medium pressure Pin a natural gas expansion turbine to form a cold natural gas stream, wherein the medium pressure Pis at a pressure lower than the first pressure P; and'}h) warming the cold natural gas stream in the heat exchanger by heat exchange against nitrogen from the nitrogen refrigeration cycle to produce a warm natural gas stream ...

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Номер записи: 57

09-02-2017 дата публикации

METHOD FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS

Номер: US20170038134A1

Автор: FARGES Oriane, Guillard Alain, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the production of liquefied natural gas is provided. The method may include providing a high pressure natural gas stream, splitting the high pressure natural gas stream into a first portion and a second portion, and liquefying the first portion of the high pressure natural gas stream to produce an LNG stream. The refrigeration needed for cooling and liquefaction of the natural gas can be provided by a closed nitrogen refrigeration cycle and letdown of the second portion of the high pressure natural gas stream. 1. A method for the production of liquefied natural gas (“LNG”) , the method comprising the steps of:a) providing a nitrogen refrigeration cycle, wherein the nitrogen refrigeration cycle is configured to provide refrigeration within a heat exchanger;b) purifying a first natural gas stream in a first purification unit to remove a first set of impurities to produce a purified first natural gas stream;{'sub': 'H', 'c) cooling and liquefying the first natural gas stream in the heat exchanger using the refrigeration from the nitrogen refrigeration cycle to produce an LNG stream, wherein the first natural gas stream has an LNG refrigeration requirement, wherein the LNG stream is liquefied at a first pressure P;'}d) purifying a second natural gas stream in a second purification unit to remove a second set of impurities to produce a purified second natural gas stream;e) partially cooling the second natural gas stream in the heat exchanger;f) withdrawing the partially cooled second natural gas stream from an intermediate section of the heat exchanger;{'sub': M', 'M', 'H, 'g) expanding the partially cooled second natural gas stream to a medium pressure Pin a natural gas expansion turbine to form a cold natural gas stream, wherein the medium pressure Pis at a pressure lower than the first pressure P; and'}h) warming the cold natural gas stream in the heat exchanger by heat exchange against the first natural gas stream to produce a warm natural gas stream at ...

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Номер записи: 58

09-02-2017 дата публикации

METHOD FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS AND LIQUID NITROGEN

Номер: US20170038135A1

Автор: FARGES Oriane, Guillard Alain, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the production of liquefied natural gas and liquid nitrogen is provided. The method may include providing a high pressure natural gas stream, splitting the high pressure natural gas stream into a first portion and a second portion, and liquefying the first portion of the high pressure natural gas stream to produce an LNG stream. The refrigeration needed for cooling and liquefaction of the natural gas and liquefaction of the nitrogen can be provided by a nitrogen refrigeration cycle and letdown of the second portion of the high pressure natural gas stream. 1. A method for the production of liquefied natural gas (“LNG”) and liquid nitrogen (“LIN”) , the method comprising the steps of:a) providing a nitrogen refrigeration cycle, wherein the nitrogen refrigeration cycle is configured to provide refrigeration within a heat exchanger, wherein a portion of the nitrogen within the nitrogen refrigeration cycle is withdrawn and liquefied yielding a liquid nitrogen product, wherein at least an equal portion of gaseous nitrogen is introduced to the nitrogen refrigeration cycle as is withdrawn;b) purifying a first natural gas stream in a first purification unit to remove a first set of impurities to produce a purified first natural gas stream;{'sub': 'H', 'c) cooling and liquefying the first natural gas stream in the heat exchanger using the refrigeration from the nitrogen refrigeration cycle to produce an LNG stream, wherein the first natural gas stream has an LNG refrigeration requirement, wherein the LNG stream is liquefied at a first pressure P;'}d) purifying a second natural gas stream in a second purification unit to remove a second set of impurities to produce a purified second natural gas stream;e) partially cooling the second natural gas stream in the heat exchanger;f) withdrawing the partially cooled second natural gas stream from an intermediate section of the heat exchanger;{'sub': M', 'M', 'H, 'g) expanding the partially cooled second natural gas stream ...

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Номер записи: 59

09-02-2017 дата публикации

METHOD FOR THE INTEGRATION OF A NITROGEN LIQUEFIER AND LIQUEFACTION OF NATURAL GAS FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS AND LIQUID NITROGEN

Номер: US20170038136A1

Автор: FARGES Oriane, Guillard Alain, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the integration of a nitrogen liquefier and liquefaction of natural gas for the production of liquefied natural gas and liquid nitrogen is provided. The method may include providing a nitrogen liquefaction unit and providing a natural gas liquefaction unit. Liquefaction of the nitrogen can be achieved via a nitrogen refrigeration cycle within the nitrogen liquefaction unit. Liquefaction of the natural gas can be achieved through the use of natural gas letdown and a second nitrogen refrigeration cycle. The two liquefaction units can be integrated via a common nitrogen recycle compressor, thereby providing significant capital savings. 1. A method for the integration of a nitrogen liquefier and natural gas liquefier for the production of liquefied natural gas (“LNG”) and liquid nitrogen (“LIN”) , the method comprising the steps of:a) providing a nitrogen liquefier having a first nitrogen refrigeration cycle, wherein the nitrogen liquefier comprises a turbine, a booster and a plurality of coolers, wherein the first nitrogen refrigeration cycle is configured to provide refrigeration within a first heat exchanger;b) providing a second nitrogen refrigeration cycle, wherein the second nitrogen refrigeration cycle comprises a second turbine, a second booster and a plurality of second coolers, wherein the second nitrogen refrigeration cycle is configured to provide refrigeration within a second heat exchanger;c) purifying a first natural gas stream in a first purification unit to remove a first set of impurities to produce a purified first natural gas stream;{'sub': 'H', 'd) cooling and liquefying the first natural gas stream in the second heat exchanger using the refrigeration from the nitrogen refrigeration cycle to produce an LNG stream, wherein the first natural gas stream has an LNG refrigeration requirement, wherein the LNG stream is liquefied at a first pressure P;'}e) purifying a second natural gas stream in a second purification unit to remove a second ...

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Номер записи: 60

09-02-2017 дата публикации

METHOD FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS AND NITROGEN

Номер: US20170038137A1

Автор: TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et I'Exploitation des Procedes Georges Claude

A method for the production of liquefied natural gas (“LNG”) and nitrogen is provided. The method may include the steps of: a) providing a nitrogen production facility, wherein nitrogen production facility comprises: a main heat exchanger, an air separation unit, a nitrogen recycle compressor, a first nitrogen refrigeration supply configured to provide refrigeration to the main heat exchanger for cooling a main air feed, b) providing a secondary refrigeration supply; c) liquefying a natural gas stream using refrigeration from the secondary refrigeration supply to form an LNG product stream; wherein the secondary refrigeration supply is configured to compress and expand a refrigerant to produce refrigeration, wherein the refrigerant of the secondary refrigeration supply is shared with refrigerant of the first nitrogen refrigeration supply 1. A method for the production of liquefied natural gas (“LNG”) and nitrogen , the method comprising the steps of:a) providing a nitrogen production facility, wherein nitrogen production facility comprises: a main heat exchanger, an air separation unit, a nitrogen recycle compressor, a first nitrogen refrigeration supply configured to provide refrigeration to the main heat exchanger for cooling a main air feed;b) providing a secondary refrigeration supply;c) liquefying a natural gas stream using refrigeration from the secondary refrigeration supply to form an LNG product stream;wherein the secondary refrigeration supply is configured to compress and expand a refrigerant to produce refrigeration, wherein the refrigerant of the secondary refrigeration supply is shared with refrigerant of the first nitrogen refrigeration supply.2. The method as claimed in claim 1 , wherein the secondary refrigeration supply comprises a third turbine-booster claim 1 , wherein the third turbine-booster has a third booster and a third turbine.3. The method as claimed in claim 2 , wherein the natural gas stream is liquefied in a secondary heat exchanger.4. ...

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Номер записи: 61

09-02-2017 дата публикации

APPARATUS FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS

Номер: US20170038138A1

Автор: Guillard Alain, TURNEY Michael A.

Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

A transportable apparatus for production of liquefied natural gas (LNG) having include a housing, a natural gas feed inlet, a heat exchanger, a phase separator, a liquid outlet disposed on the cold end of the heat exchanger, an LNG product outlet disposed on the cold end of the heat exchanger, a first refrigeration supply, a second refrigeration supply, and wherein the heat exchanger, the phase separator, the first expansion valve, the first refrigeration supply, and the second refrigeration supply are all disposed within the housing. The first refrigeration supply includes expansion of a portion of the LNG product, and the second refrigeration supply can include expansion of another portion of the LNG product or expansion and heat exchange with a supply of liquid nitrogen. The production of LNG is achieved without the external supply of electricity. 1. A transportable apparatus for the production of liquefied natural gas (“LNG”) , the apparatus comprising:a) a housing;b) a natural gas feed inlet configured to accept a stream of pressurized natural gas originating from outside the housing;c) a heat exchanger in fluid communication with the natural gas feed inlet, such that the heat exchanger is configured to receive the stream of pressurized natural gas from the natural gas feed inlet, wherein the heat exchanger has a warm end, a cold end, and an intermediate section;d) a phase separator having a fluid inlet, a gaseous outlet, and a liquid outlet, wherein the fluid inlet is in fluid communication with a first intermediate fluid outlet located in the intermediate section of the heat exchanger, such that the phase separator is configured to receive a partially cooled fluid from the heat exchanger, wherein the gaseous outlet of the phase separator is in fluid communication with a second intermediate fluid inlet of the intermediate section of the heat exchanger, such that the second intermediate fluid inlet of the intermediate section of the heat exchanger is configured ...

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Номер записи: 62

09-02-2017 дата публикации

METHOD FOR THE PRODUCTION OF LIQUEFIED NATURAL GAS

Номер: US20170038139A1

Автор: Guillard Alain, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the production of liquefied natural gas (LNG) without the use of externally provided electricity is provided The method may include the steps of: providing a transportable apparatus, wherein the transportable apparatus comprises a housing, a heat exchanger, a phase separator, a first refrigeration supply, and a second refrigeration supply, wherein the first refrigeration supply and the second refrigeration supply are configured to provide refrigeration within the heat exchanger; introducing a natural gas stream into the transportable apparatus at a first pressure under conditions effective for producing an LNG stream; withdrawing the LNG stream from the transportable apparatus; and withdrawing a warm natural gas stream from the transportable apparatus, wherein the warm natural gas stream is at a second pressure, wherein the second pressure is lower than the first pressure. 1. A method for the production of liquefied natural gas (“LNG”) using a transportable apparatus , the method comprising the steps of:providing a transportable apparatus, wherein the transportable apparatus comprises a housing, a heat exchanger, a phase separator, a first refrigeration supply, and a second refrigeration supply, wherein the first refrigeration supply and the second refrigeration supply are configured to provide refrigeration within the heat exchanger;introducing a natural gas stream into the transportable apparatus at a first pressure under conditions effective for producing an LNG stream;withdrawing the LNG stream from the transportable apparatus; andwithdrawing a warm natural gas stream from the transportable apparatus, wherein the warm natural gas stream is at a second pressure, wherein the second pressure is lower than the first pressure.2. The method as claimed in claim 1 , wherein the first refrigeration supply comprises a first expansion valve claim 1 , a first LNG inlet disposed on a cold end of the heat exchanger claim 1 , and a first natural gas outlet ...

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Номер записи: 63

08-02-2018 дата публикации

INTEGRATION OF INDUSTRIAL GAS SITE WITH LIQUID HYDROGEN PRODUCTION

Номер: US20180038638A1

Автор: ANDREEV Kirill, FRANC Pierre-Etienne, Guillard Alain, Roesch Alexander, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

The method for producing liquid hydrogen can include the steps of: introducing pressurized natural gas from a high pressure natural gas pipeline to a gas processing unit under conditions effective for producing a purified hydrogen stream; and introducing the purified hydrogen stream to a hydrogen liquefaction unit under conditions effective to produce a liquid hydrogen stream, wherein the hydrogen liquefaction unit provides a warm temperature cooling and a cold temperature cooling to the purified hydrogen stream, wherein the warm temperature cooling is provided by utilizing letdown energy of a pressurized stream selected from the group consisting of a nitrogen stream sourced from a nitrogen pipeline, a natural gas stream sourced from the high pressure natural gas pipeline, an air gas sourced from an air separation unit, and combinations thereof, wherein the cold temperature is provided by utilizing letdown energy of the purified hydrogen stream. 1. A method for liquefying a pressurized hydrogen gas originating from a pressure swing adsorber unit , the method comprising the steps of:withdrawing a hydrogen containing gas from a methanol production unit;introducing the hydrogen containing gas to a pressure swing adsorber (PSA) unit under conditions effective for purifying the hydrogen containing gas to produce a purified hydrogen stream;sending the purified hydrogen gas to a hydrogen liquefaction unit under conditions effective for the liquefaction of hydrogen thereby producing a liquefied hydrogen stream,wherein the hydrogen liquefaction unit is configured to provide a first refrigeration source and a second refrigeration source, wherein the first refrigeration source provides refrigeration using expansion of a high pressure nitrogen stream, wherein the second refrigeration source provides refrigeration using expansion of a high pressure hydrogen gas stream to produce a warm hydrogen gas stream,wherein the high pressure hydrogen gas stream is derived from a hydrogen ...

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Номер записи: 64

08-02-2018 дата публикации

METHOD FOR LIQUEFACTION OF INDUSTRIAL GAS BY INTEGRATION OF METHANOL PLANT AND AIR SEPARATION UNIT

Номер: US20180038641A1

Автор: Guillard Alain, Roesch Alexander, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the liquefaction of an industrial gas by integration of a methanol plant and an air separation unit (ASU) is provided. The method can include the steps of: (a) providing a pressurized natural gas stream, a pressurized purge gas stream originating from a methanol plant, and a pressurized air gas stream comprising an air gas originating from the ASU; (b) expanding three different pressurized gases to produce three cooled streams, wherein the three different pressurized gases are the pressurized natural gas stream, the pressurized purge gas stream, and the pressurized air gas stream; and (c) liquefying the industrial gas in a liquefaction unit against the three cooled streams to produce a liquefied industrial gas stream. The industrial gas to be liquefied is selected from the group consisting of a first portion of the pressurized natural gas stream, a nitrogen gas stream, hydrogen and combinations thereof. 1. A method for the liquefaction of an industrial gas selected from the group consisting of natural gas , nitrogen , hydrogen and combinations thereof , the method comprising the steps of:a) withdrawing a pressurized natural gas stream from a natural gas pipeline;b) removing carbon dioxide and water from the pressurized natural gas stream;c) expanding the pressurized natural gas stream to form an expanded natural gas stream and warming the expanded natural gas stream in a first portion of a heat exchanger against the industrial gas to form a warmed natural gas stream;d) sending the warmed natural gas stream to a methanol production facility under conditions effective for producing a methanol stream, a purified hydrogen stream, and a purge gas rich in hydrogen;e) expanding the purge gas rich in hydrogen to form an expanded purge gas and warming the expanded purge gas in a second portion of the heat exchanger against the industrial gas to form a warmed purge gas stream;f) sending the warmed purge gas stream to the methanol production facility for use as ...

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Номер записи: 65

08-02-2018 дата публикации

PROCESS INTEGRATION OF A GAS PROCESSING UNIT WITH LIQUEFACTION UNIT

Номер: US20180038642A1

Автор: Guillard Alain, Roesch Alexander, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

It is proposed to integrate a gas processing unit with a liquefaction unit. The industrial gas stream may be but is not limited to air gases of oxygen, nitrogen argon, hydrocarbon, LNG, syngas or its components, CO, or any other molecule or combination of molecules. It is proposed to integrate the underutilized process inefficiencies of a gas processing unit into the liquefaction unit to produce a liquid at a reduced operating cost. The gas processing unit may be any system or apparatus which alters the composition of a feed gas. Examples could be, but are not limited to, a methanol plant, steam methane reformer, cogeneration plant, and partial oxidation unit. 1. A process for the production of a liquid by integration of a gas processing unit and a liquefaction unit , the process comprising the steps of:a) providing a gas processing unit;b) providing a liquefaction unit, wherein the liquefaction unit is in fluid communication with the gas processing unit, such that the liquefaction unit and the gas processing unit are configured to send and receive fluids from each other;c) extracting a letdown energy from a high pressure gas to produce refrigeration to be used within the liquefaction unit, thereby producing a low pressure gas, wherein the low pressure gas is then used by the gas processing unit as a low pressure feedstream;d) liquefying an industrial gas within the liquefaction unit using refrigeration produced in step c).2. The process as claimed in claim 1 , wherein the gas processing unit is selected from the group consisting of a methanol plant claim 1 , a steam methane reformer claim 1 , a cogeneration plant claim 1 , a partial oxidation unit claim 1 , an autothermal reforming unit claim 1 , and combinations thereof.3. The process as claimed in claim 1 , wherein the industrial gas is selected from the group consisting of an air gas claim 1 , a hydrocarbon claim 1 , syngas claim 1 , carbon dioxide claim 1 , hydrogen claim 1 , carbon monoxide claim 1 , and ...

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Номер записи: 66

08-02-2018 дата публикации

METHOD FOR THE INTEGRATION OF LIQUEFIED NATURAL GAS AND SYNGAS PRODUCTION

Номер: US20180038643A1

Автор: Guillard Alain, Roesch Alexander, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

An integrated method for the production of liquefied natural gas (LNG) and syngas is provided. The method can include the steps of: utilizing letdown energy of a high pressure natural gas stream that is withdrawn from a natural gas pipeline to provide a warm temperature cooling; utilizing a refrigeration cycle to provide a cold temperature cooling, wherein the refrigeration cycle comprises a refrigerant recycle compressor that is powered utilizing a steam turbine; and cooling a second high pressure natural gas stream using the warm temperature cooling and the cold temperature cooling to produce an LNG product stream. The second high pressure natural gas stream is withdrawn from the natural gas pipeline, and the steam turbine is powered by high pressure steam that is produced from a syngas production facility. 1. A method for the production of liquefied natural gas (“LNG”) , the method comprising the steps of:a) operating a syngas production facility that is configured to convert a first natural gas stream into a syngas stream, wherein the syngas production facility is further configured to produce a pressurized steam, wherein the pressurized steam is fed to a steam turbine, wherein during said operating step, the syngas production facility uses a second natural gas stream at a lower pressure than the first natural gas stream;b) cooling and liquefying a third natural gas stream using refrigeration provided by at least two different sources to produce an LNG product stream;c) providing a first source for the refrigeration used in step b) by expanding the second natural gas stream in a natural gas expander and then warming the second natural gas stream, prior to being used in the syngas production facility in step a), against the third natural gas stream; andd) providing a second source for the refrigeration used in step b) using a nitrogen refrigeration cycle, wherein the nitrogen refrigeration cycle comprises a nitrogen recycle compressor and at least one turbine, ...

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Номер записи: 67

08-02-2018 дата публикации

METHOD FOR LIQUEFACTION OF INDUSTRIAL GAS BY INTEGRATION OF METHANOL PLANT AND AIR SEPARATION UNIT

Номер: US20180038644A1

Автор: Guillard Alain, Roesch Alexander, TURNEY Michael A.

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A method for the liquefaction of an industrial gas by integration of a methanol plant and an air separation unit (ASU) is provided. The method can include the steps of: (a) providing a pressurized natural gas stream, a pressurized purge gas stream composed predominately of hydrogen and originating from a methanol plant, and a pressurized air gas stream comprising an air gas from the ASU; (b) expanding three different pressurized gases to produce three cooled streams, wherein the three different pressurized gases consist of the pressurized natural gas stream, the pressurized purge gas stream, and the pressurized air gas stream; and (c) liquefying the industrial gas in a liquefaction unit against the three cooled streams to produce a liquefied industrial gas stream, wherein the industrial gas to be liquefied is selected from the group consisting of a first portion of the pressurized natural gas stream, a nitrogen gas stream, hydrogen and combinations thereof 1. A method for the liquefaction of an industrial gas selected from the group consisting of natural gas , nitrogen , hydrogen , and combinations thereof , the method comprising the steps of:a) withdrawing a pressurized natural gas stream from a natural gas pipeline;b) removing carbon dioxide and water from the pressurized natural gas stream;c) expanding the pressurized natural gas stream to form an expanded natural gas stream and warming the expanded natural gas stream in a first portion of a heat exchanger against the industrial gas to form a warmed natural gas stream;d) sending the warmed natural gas stream to a methanol production facility under conditions effective for producing a methanol stream, a purified hydrogen stream, and a purge gas rich in hydrogen;e) expanding the purge gas rich in hydrogen to form an expanded purge gas and warming the expanded purge gas in a second portion of the heat exchanger against the industrial gas to form a warmed purge gas stream;f) sending the warmed purge gas stream to the ...

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Номер записи: 68

24-02-2022 дата публикации

ADVANCED MULTI-LAYER ACTIVE MAGNETIC REGENERATOR SYSTEMS AND PROCESSES FOR MAGNETOCALORIC LIQUEFACTION

Номер: US20220057119A1

Автор: Barclay John, Holladay Jamie D., Meinhardt Kerry D., Polikarpov Evgueni, Thomsen Edwin C.

Принадлежит:

A process for liquefying a process gas that includes introducing a heat transfer fluid into an active magnetic regenerative refrigerator apparatus that comprises a single stage comprising dual multilayer regenerators located axially opposite to each other. 1. A system comprising:a first active magnetic regenerative regenerator comprising 2 to 16 successive layers, wherein each layer comprises an independently compositionally distinct magnetic refrigerant material having an independent Curie temperature and wherein the first layer of the first active magnetic regenerative regenerator has the highest Curie temperature and the last layer of the first active magnetic regenerative regenerator has the lowest Curie temperature;a second active magnetic regenerative regenerator comprising 2 to 16 successive layers, wherein each layer comprises an independently compositionally distinct magnetic refrigerant material having an independent Curie temperature and wherein the first layer of the second active magnetic regenerative regenerator has the lowest Curie temperature and the last layer of the second active magnetic regenerative regenerator has the highest Curie temperature;at least one conduit fluidly coupled between the lowest Curie temperature layer of the first active magnetic regenerative regenerator and the highest Curie temperature layer of the second active magnetic regenerative regenerator;a single bypass flow heat exchanger (a) fluidly coupled to the lowest Curie temperature layer of the first active magnetic regenerative regenerator and (b) fluidly coupled to a process gas source; andfor each layer of the first active magnetic regenerative regenerator and each layer of the second active magnetic regenerative regenerator, an independent fluid conduit between an outlet of each layer of the first active magnetic regenerative regenerator to an inlet of the corresponding Curie temperature layer of the second active magnetic regenerative regenerator, except for lowest ...

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Номер записи: 69

07-02-2019 дата публикации

Recovery Of Helium From Nitrogen-Rich Streams

Номер: US20190041128A1

Автор: Berger Alan, Higginbotham Paul, Palamara John Eugene, White Vincent

Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

Overall power consumption in a cryogenic distillation process for recovering helium from nitrogen-rich gases comprising helium may be reduced if the feed to the distillation column system is at least substantially condensed by indirect heat exchange against a first bottoms liquid at first pressure, and a second bottoms liquid at a second pressure that is different from the first pressure. 1. Apparatus for recovering helium from a nitrogen-rich feed gas comprising helium , said apparatus comprising:a distillation column system for operation at an elevated operating pressure to separate at least partially condensed feed gas into helium-enriched overhead vapor and nitrogen-enriched bottoms liquid(s);an overhead condenser for partially condensing helium-enriched overhead vapor by indirect heat exchange to produce helium-enriched vapor as product and liquid for reflux in the column system;a first heat exchange system for cooling feed gas by indirect heat exchange with a first nitrogen-enriched bottoms liquid to produce cooled feed gas and vapor for the column system;a first pressure reduction device for reducing the pressure of a second nitrogen-enriched bottoms liquid to produce reduced pressure bottoms liquid;a second heat exchange system for cooling said cooled feed gas by indirect heat exchange against said reduced pressure bottoms liquid to produce at least partially condensed feed gas and vaporized bottoms liquid; anda second pressure reduction device for reducing the pressure of said at least partially condensed feed gas to produce at least partially condensed feed gas at reduced pressure for use as said feed to the distillation column system.2. The apparatus of comprising a third pressure reduction device for reducing the pressure of a third nitrogen-enriched bottoms liquid to produce reduced pressure bottoms liquid for vaporization by indirect heat exchange in said overhead condenser to produce nitrogen-enriched vapor.3. The apparatus of comprising an expander ...

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Номер записи: 70

06-02-2020 дата публикации

Natural Gas Liquid Fractionation Plants Low Grade Waste Heat Conversion to Cooling, Power and Water

Номер: US20200040773A1

Автор: Kamel Akram Hamed Mohamed, Noureldin Mahmoud Bahy Mahmoud

Принадлежит:

A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant for production of potable water. The method includes heating a buffer fluid via a heat exchanger in the NGL fractionation plant to transfer heat from the NGL fractionation plant to the buffer fluid. The method includes heating feed water with the buffer fluid discharged from the heat exchanger for production of potable water via a multi-effect-distillation (MED) system. The method may include producing potable water with heat from the buffer fluid in the MED system. 1. A method of recovering heat from a Natural Gas Liquid (NGL) fractionation plant for production of potable water , the method comprising:heating a buffer fluid via a heat exchanger in a NGL fractionation plant to transfer heat from the NGL fractionation plant to the buffer fluid, the NGL fractionation plant comprising a dehydrator column and a distillation column; andproducing potable water with heat from the buffer fluid in a multi-effect distillation (MED) system comprising train distillation effects.2. The method of claim 1 , comprising:storing the buffer fluid in a storage tank;flowing the buffer fluid from the storage tank to the heat exchanger; andflowing the buffer fluid from the MED system to the storage tank.3. The method of claim 1 , wherein producing potable water with heat from the buffer fluid comprises heating brackish water with heat from the buffer fluid claim 1 , wherein the MED system is a modified MED system claim 1 , and wherein the buffer fluid comprises water or oil.4. The method of claim 1 , wherein the NGL fractionation plant comprises a natural gas de-colorizing section comprising the distillation column as a natural gas de-colorizer distillation column claim 1 , and wherein heating the buffer fluid comprises heating the buffer fluid via the heat exchanger with heat from a pre-flash drum overhead outlet stream in the natural gas de-colorizing section.5. The method of claim 1 , wherein the NGL ...

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Номер записи: 71

06-02-2020 дата публикации

REFRIGERATION AND/OR LIQUEFACTION DEVICE, AND ASSOCIATED METHOD

Номер: US20200041201A1

Автор: BARJHOUX Pierre, Bernhardt Jean-Marc, Durand Fabien, FLAVIEN Gilles, HELOIN Vincent

Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A device for refrigerating and/or liquefying a working gas comprising helium, the device comprising a looped working circuit for the working gas includes, in series, a compression station, a cold box, a heat exchange system exchanging heat between the cooled working gas and a user, the device further comprising an additional pre-cooling system comprising at least one tank of auxiliary cryogenic fluid, such as liquid nitrogen, the cold box comprising a first cooling stage of the working gas comprising a first exchanger disposed at the output of the compression station as well as a second heat exchanger and a third heat exchanger, the first heat exchanger being of the aluminum plate-fin type, the second heat exchanger being of the tube or welded plate type, characterized in that the second and third heat exchangers are connected both serially and in parallel on the working circuit downstream of the first heat exchanger. 2. The device of claim 1 , wherein the second heat exchanger is one of the following: stainless steel tubes claim 1 , aluminum tubes claim 1 , or a stainless steel welded plate exchanger claim 1 , wherein the stainless steel tubes or the aluminum tubes are optionally finned.3. The device of claim 1 , wherein the working circuit comprises a bypass leg selectively bypassing the third heat exchanger allowing the working gas from said upstream-most one of the plurality of first heat exchangers being arranged at the exit of the compression station and/or from the second heat exchanger to selectively avoid the third heat exchanger in the working circuit.4. The device of claim 1 , wherein the third exchanger is adapted and configured to effect selective exchange of heat between the working gas and the at least one volume of liquefied auxiliary gas claim 1 , the device comprising a selective feed pipe connecting the at least one volume of liquefied auxiliary gas to the third heat exchanger in order to transfer heat between the at least one volume of liquefied ...

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Номер записи: 72

18-02-2021 дата публикации

NATURAL GAS LIQUEFACTION DEVICE AND NATURAL GAS LIQUEFACTION METHOD

Номер: US20210048243A1

Автор: IRISAWA Makoto

Принадлежит:

One object of the present invention is to provide a natural gas liquefaction device which uses noncombustible gas as a refrigerant, and can reduce the power consumption a range of relatively low refrigerant pressure, and the present invention provides a natural gas liquefaction device including a compressor which is configured to compress a refrigerant containing noncombustible gas by a plurality of compression stages; a heat exchanger which is configured to cool and liquefy a natural gas to be a liquefied natural gas; a natural gas liquefaction line which is configured to introduce the natural gas into the heat exchanger and supply the liquefied natural gas to an outside; a first refrigerant line which is configured to introduce a refrigerant- passed through the compressor into the heat exchanger, and then further introduce the refrigerant- into a decompressor; a second refrigerant line which is configured to introduce the refrigerant- decompressed by the decompressor into the heat exchanger, and further introduce the refrigerant- into any one of a second compression stage and subsequent stages of the compressor; a third refrigerant line which is configured to be branched from the first refrigerant line and introduce at least a part of the refrigerant- into an expansion turbine; and a fourth refrigerant line which is configured to introduce the refrigerant- expanded by the expansion turbine into the heat exchanger, and further introduce the refrigerant- into a first compression stage of the plurality of compression stages provided in the compressor. 1. A natural gas liquefaction device which produces a liquefied natural gas by cooling and liquefying a natural gas ,wherein the natural gas liquefaction device includes:a compressor which is configured to compress a refrigerant containing noncombustible gas by a plurality of compression stages;a heat exchanger which is configured to cool and liquefy a natural gas to be a liquefied natural gas;a natural gas liquefaction ...

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Номер записи: 73

16-02-2017 дата публикации

Method for purifying, cooling and separating a gaseous mixture and associated apparatus

Номер: US20170045291A1

Автор: Antony CORREIA ANACLETO, Benoit Davidian, Bernard Saulnier, Clement Lix, Erwan LE GULUDEC, Guillaume Cardon, Quentin Saniez

Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

The invention relates to a method for cooling, purifying and separating a gaseous mixture containing at least one impurity, in which the gaseous mixture is cooled to a temperature no higher than the temperature at which the at least one impurity solidifies in a heat exchanger having cooling passages, the cooling passages being at least partially covered with a coating and/or physically treated and/or chemically treated, the coating and/or the treatment serving to limit or even prevent the solidified impurity from forming and/or adhering to a surface of the passages; at least one portion of the solidified impurity exiting the cooling passages of the heat exchanger is collected; and the gaseous mixture is withdrawn from the heat exchanger.

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Номер записи: 74

15-02-2018 дата публикации

SYSTEMS AND METHODS FOR CAPTURING NATURAL GAS LIQUIDS FROM OIL TANK VAPORS

Номер: US20180045460A1

Автор: Hotton Kevin, LEWIS Matthew, Sargsyan Gevorg, Young Andrew C., Zubrin Robert M.

Принадлежит:

A hydrocarbon vapor capture and processing system is disclosed to reduce both carbon emissions and conventional pollution, while producing financial returns by turning waste vapors into high quality NGLs. In one embodiment, the hydrocarbon vapor is sent to a compressor for compression. Compressed vapor is then cooled via an air cooler, before being condensed by a refrigerator to form a liquid. The resulting two-phase flow is then separated into a dry gas stream and a liquid stream using a cyclonic separator. The dry gas stream may be transmitted as a light gas to sales line. The resulting liquid stream is passed to a stripping column to produce NGLs. The system offers great benefits to the environment and public health, by providing a technology that drastically cuts carbon emissions and noxious pollution, while incentivizing drillers to implement such measures through its ability to produce revenue. 1. An apparatus to capture natural gas liquids (NGLs) from oil tanks , comprising:a compressor to withdraw hydrocarbon vapors from the oil tanks; anda cooling system to condense liquids from said hydrocarbon vapors resulting in a natural gas liquids (NGLs) stream and a light gas stream.2. The apparatus of claim 1 , wherein the compressor is connected to a refrigerated evaporator to condense liquid components of the hydrocarbon vapors.3. The apparatus of claim 2 , wherein the refrigerated evaporator is connected to a cyclonic separator.4. The apparatus of claim 3 , wherein liquid product from the cyclonic separator connects into a stripping column warmed from below by a reboiler.5. The apparatus of claim 4 , wherein the stripping column and the reboiler remove dissolved air claim 4 , methane claim 4 , and excess ethane from the hydrocarbon vapors.6. The apparatus of claim 5 , wherein the cyclonic separator claim 5 , the stripping column and the reboiler are integrated into a single unit.7. The apparatus of claim 6 , wherein the compressor is powered by the light gas ...

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Номер записи: 75

03-03-2022 дата публикации

Methods and compositions for delivery of carbon dioxide

Номер: US20220065527A1

Автор: Brad VICKERS, Brandon Burns, Dean Paul Forgeron, George Sean Monkman, Josh BROWN, Kevin Cail

Принадлежит: Carboncure Technologies Inc

Provided herein are methods, apparatus, and systems for delivering carbon dioxide as a mixture of solid and gaseous carbon dioxide to a destination.

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Номер записи: 76

14-02-2019 дата публикации

Method and system for liquefying a natural gas feed stream

Номер: US20190049174A1

Автор: Carlos ARNAIZ DEL POZO, Thijs Groenendijk

Принадлежит: SHELL OIL COMPANY

The invention relates to a method of liquefying a natural gas feed stream. A first split-off stream from a compressed process stream is expanded. A remainder of the compressed process stream is cooled against the expanded first split-off stream. A second split-off stream from the precooled process stream is expanded, while a remainder of the precooled compressed process stream is cooled against a vapour stream obtained from the second split-off stream. The further cooled process stream is expanded, thereby obtaining a liquid natural gas stream. The first split-off stream and the vapour stream are passed to a recompression stage to obtain a recycle stream to be combined with a natural gas feed stream to form the process stream.

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Номер записи: 77

14-02-2019 дата публикации

METHODS FOR PROVIDING REFRIGERATION IN NATURAL GAS LIQUIDS RECOVERY PLANTS

Номер: US20190049176A1

Автор: MCCOOL Grant L., PUIGBO Arturo, WALTER Thomas

Принадлежит: Linde Engineering North America Inc.

A process and plant for natural gas liquids (NGL) recovery includes a main heat exchanger, a cold gas/liquid separator, a separation or distillation column, and an overhead gas heat exchanger. A pressurized residue gas generated from an overhead gas stream removed the top of the separation or distillation column is expanded and used as a cooling medium in the overhead gas heat exchanger and the main heat exchanger. The expanded residue gas, used as a cooling medium, is then compressed up to a pressure to be combined with the overhead stream from the separation or distillation column. 1. A process for natural gas liquids (NGL) recovery comprising:introducing a natural gas feed stream into a main heat exchanger wherein the feed stream is cooled and partially condensed,introducing the partially condensed feed stream into a cold gas/liquid separator wherein the partially condensed feed stream is separated into a liquid fraction and a gaseous fraction,introducing the liquid fraction into a separation or distillation column,separating the gaseous fraction into a first portion and a second portion,cooling the first portion of the gaseous fraction in an overhead heat exchanger by indirect heat exchange with an overhead gaseous stream removed from the top of the separation or distillation column, and introducing the cooled and partially condensed first portion of the gaseous fraction into the separation or distillation column at a point above the introduction point of the liquid fraction into the separation or distillation column,expanding the second portion of the gaseous fraction and introducing the expanded second portion of the gaseous fraction into the separation or distillation column at a point above the introduction point of the liquid fraction into the separation or distillation column,removing a C2+ or C3+ liquid product stream (NGL) from the bottom of the separation or distillation column,removing the overhead gaseous stream from the top of the separation or ...

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Номер записи: 78

23-02-2017 дата публикации

Process for Recovering Olefins from Manufacturing Operations

Номер: US20170050900A1

Автор: Paul Su

Принадлежит: Membrane Technology and Research Inc

A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or an olefin derivative to recover unreacted olefin. The process involves compressing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a first compressed stream, then directing the first compressed stream to a membrane separation pretreatment step. The permeate stream withdrawn from this step is enriched in olefin and is sent to a second compressor, which produces a second compressed stream that is then cooled and condensed. The condensation step produces a liquid condensate and an uncondensed gas stream. The uncondensed gas stream undergoes a second membrane separation step to produce another olefin-enriched permeate stream, which is recirculated within the process prior to the second compression step, and an olefin-depleted residue stream, which may be purged from the process.

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Номер записи: 79

22-02-2018 дата публикации

METHOD FOR REMOVING NITROGEN FROM A HYDROCARBON-RICH FRACTION

Номер: US20180051215A1

Автор: BAUER Heinz, Warter Michael

Принадлежит:

A method of obtaining a liquefied hydrocarbon-rich fraction (product fraction) having a nitrogen content of ≦1 mol %, wherein the hydrocarbon-rich fraction is liquefied and subcooled with a refrigeration circuit and then subjected to a rectificative removal of nitrogen is disclosed. 2. The method as claimed in claim 1 , characterized in that the hydrocarbon-rich fraction to be liquefied has a nitrogen content of at least 2 mol %.3. The method as claimed in claim 1 , characterized in that the liquefied and subcooled hydrocarbon-rich fraction is expanded to a pressure between 1.1 and 2.0 bar.4. The method as claimed in claim 1 , characterized in that the nitrogen-enriched fraction drawn off at the top of the nitrogen stripping column is compressed to a pressure between 25 and 50 bar.5. The method as claimed in claim 1 , characterized in that the high-pressure nitrogen column is operated at a pressure between 20 and 30 bar.6. The method as claimed in claim 1 , characterized in that the amount of the reboil stream is between 10% and 70% of the amount of the compressed nitrogen-enriched fraction.7. The method as claimed in claim 1 , characterized in that the high-purity nitrogen stream drawn off from the reflux collector has a nitrogen content of at least 98 mol %.8. The method as claimed in claim 1 , characterized in that the nitrogen-enriched fraction drawn off at the top of the nitrogen stripping column has a nitrogen content between 10 and 60 mol %.9. The method as claimed in claim 1 , wherein fuel gas is required at at least one point in the method claim 1 , characterized in that the fuel gas used is a substream of the hydrocarbon-rich fraction to be liquefied and/or a substream of the compressed nitrogen-enriched fraction to be liquefied.10. The method as claimed in characterized in that the nitrogen content is at least 3 mol %.11. The method as claimed in characterized in that the pressure is between 1.15 and 1.5 bar.12. The method as claimed in characterized in ...

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Номер записи: 80

22-02-2018 дата публикации

System and Method for Liquefying Natural Gas with Turbine Inlet Cooling

Номер: US20180051928A1

Автор: Huntington Richard A., Matheidas Michael T., Sibal Paul W.

Принадлежит:

A system and method for processing natural gas to produce liquefied natural gas is disclosed. The natural gas is cooled in one or more heat exchangers using a first refrigerant from a first refrigerant circuit in which the first refrigerant is compressed in a first compressor driven by a first gas turbine having a first inlet air stream. The natural gas is liquefied using a second refrigerant, the second refrigerant being compressed in a second compressor driven by a second gas turbine having a second inlet air stream. At least one of the inlet air streams is chilled from about the respective dry bulb temperature to a temperature below the respective wet bulb temperature. Water contained in at least one of the chilled first and second air streams is condensed and separated therefrom. At least a portion of the first refrigerant is condensed or sub-cooled using the separated water. 1. A method for processing natural gas to produce liquefied natural gas , the method comprising:cooling the natural gas in one or more heat exchangers using a first refrigerant from a first refrigerant circuit in which the first refrigerant is compressed in a first compressor driven by a first gas turbine having a first inlet air stream, the first inlet air stream having a dry bulb temperature and a wet bulb temperature;liquefying the natural gas using a second refrigerant, the second refrigerant being compressed in a second compressor driven by a second gas turbine having a second inlet air stream, the second inlet air stream having a dry bulb temperature and a wet bulb temperature;chilling at least one of the first and second inlet air streams from about the respective dry bulb temperature to a temperature below the respective wet bulb temperature, wherein the chilling of at least one of the first and second inlet air streams uses the first refrigerant from the first refrigerant circuit;condensing water contained in at least one of the chilled first and second air streams;separating the ...

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Номер записи: 81

22-02-2018 дата публикации

System and Method to Integrate Condensed Water with Improved Cooler Performance

Номер: US20180051929A1

Автор: Michael T. MATHEIDAS, Paul W. Sibal, Richard A. Huntington

Принадлежит: Individual

A method and system for cooling a process fluid is disclosed. An inlet air stream of a turbine is cooled with an inlet air cooling system. Moisture contained in the cooled inlet air stream is condensed and separated from the cooled inlet air stream to produce a water stream in an open-loop circuit. The water stream is sprayed into an air cooler air stream. The combined air cooler air stream and sprayed water stream is directed through an air cooler. Heat is exchanged between the process fluid and the combined air cooler air stream and sprayed water stream to thereby condense, chill, or sub-cool the process fluid.

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Номер записи: 82

23-02-2017 дата публикации

Integrated Pre-Cooled Mixed Refrigerant System and Method

Номер: US20170051968A1

Автор: Douglas A. DUCOTE, JR., James Podolski, Timothy P. GUSHANAS

Принадлежит: Chart Energy and Chemicals Inc

A system and method for cooling and liquefying a gas in a heat exchanger that includes compressing and cooling a mixed refrigerant using first and last compression and cooling cycles so that high pressure liquid and vapor streams are formed. The high pressure liquid and vapor streams are cooled in the heat exchanger and then expanded so that a primary refrigeration stream is provided in the heat exchanger. The mixed refrigerant is cooled and equilibrated between the first and last compression and cooling cycles so that a pre-cool liquid stream is formed and subcooled in the heat exchanger. The stream is then expanded and passed through the heat exchanger as a pre-cool refrigeration stream. A stream of gas is passed through the heat exchanger in countercurrent heat exchange with the primary refrigeration stream and the pre-cool refrigeration stream so that the gas is cooled. A resulting vapor stream from the primary refrigeration stream passage and a two-phase stream from the pre-cool refrigeration stream passage exit the warm end of the exchanger and are combined and undergo a simultaneous heat and mass transfer operation prior to the first compression and cooling cycle so that a reduced temperature vapor stream is provided to the first stage compressor so as to lower power consumption by the system. Additionally, the warm end of the cooling curve is nearly closed further reducing power consumption. Heavy components of the refrigerant are also kept out of the cold end of the process, reducing the possibility of refrigerant freezing, as well as facilitating a refrigerant management scheme.

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Номер записи: 83

23-02-2017 дата публикации

METHOD AND DEVICE FOR LIQUEFACTION METHANE

Номер: US20170051969A1

Автор: CLODIC Denis, TOUBASSY Joseph

Принадлежит: CRYO PUR

Method of liquefaction of methane and filling a tank () with liquefied methane, 1. A method of liquefaction of methane and filling a transport tank with liquefied methane , said method being implemented by means of a liquefaction device comprising:a system for liquefaction of the initially gaseous methane, a system for filling the transport tank with the liquefied methane, and said method comprising:a step of liquefaction of the methane comprising an operation of cooling the methane to its saturation temperature,a step of filling the transport tank with the liquefied methane,method in which, during the filling step, the fraction of gaseous methane in the transport tank is returned to the liquefaction system,wherein:the liquefaction step is performed when the methane is at a pressure substantially equal to 15 bar,in the filling step, the methane is introduced into the transport tank at the transport pressure, said transport pressure being less than or substantially equal to 8 bar.2. The method according to claim 1 , wherein the liquefaction step comprises an operation of compression of the methane at a pressure substantially equal to 15 bar.3. The method according to claim 1 , wherein the relief of the pressure in the transport tank is done with reinjection of the gaseous fraction of methane into the liquefaction system.4. The method according to any claim 1 , wherein the gaseous methane arrives in the liquefaction system at an initial temperature of about −100° C.5. The method according to claim 1 , wherein the gaseous methane is compressed at a pressure substantially equal to 15 bar by means of a compressor claim 1 , the methane leaving the compressor being at a temperature substantially equal to 80° C.6. The method according to claim 1 , wherein the gaseous methane is cooled a first time to a temperature substantially equal to 20° C. in the liquefaction system claim 1 , then the gaseous methane is cooled a second time to a temperature of −90° C. in the ...

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Номер записи: 84

23-02-2017 дата публикации

Ethane recovery and ethane rejection methods and configurations

Номер: US20170051970A1

Автор: John Mak

Принадлежит: Fluor Technologies Corp

Contemplated plants for flexible ethane recovery and rejection by allowing to switch the top reflux to the demethanizer from residue gas to the deethanizer overhead product and by controlling the flow ratio of feed gas to two different feed gas exchangers. Moreover, the pressure of the demethanizer is adjusted relative to the deethanizer pressure for control of the ethane recovery and rejection.

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Номер записи: 85

23-02-2017 дата публикации

DISTILLATION COLUMN SYSTEM AND PLANT FOR PRODUCTION OF OXYGEN BY CRYOGENIC FRACTIONATION OF AIR

Номер: US20170051971A1

Автор: Goloubev Dimitri

Принадлежит:

A distillation column system and a plant are for production of oxygen by cryogenic fractionation of air. The distillation column system has a high-pressure column and a low-pressure column, a main condenser, and an argon column with an argon column top condenser. The low-pressure column comprises an upper mass transfer region, a lower mass transfer region and a middle mass transfer region. The argon column top condenser is arranged within the low-pressure column between the upper and middle mass transfer regions and is configured as a forced-flow evaporator. 1. A distillation column system for obtaining oxygen by cryogenic fractionation of air , comprisinga high-pressure column and a low-pressure column,a main condenser configured as a condenser-evaporator, the liquefaction space of the main condenser being in flow connection with the top of the high-pressure column,and comprising an argon column whichis in flow connection with an intermediate point in the low-pressure column, andhas means of drawing off an argon-enriched stream andan argon column top condenser which is configured as a condenser-evaporator and is in flow connection with the top of the argon column,the low-pressure column has an upper mass transfer region, a lower mass transfer region and a middle mass transfer region,the middle mass transfer region has at least one first mass transfer space which is open in the upward direction toward the upper mass transfer region and in the downward direction toward the lower mass transfer region,characterized in thatthe upper mass transfer region has a liquid collector at its bottom end,the first mass transfer space has a liquid distributor at its top,the argon column top condenser is arranged within the low-pressure column between the upper and middle mass transfer regions, and in that means of introducing liquid from the liquid collector beneath the upper mass transfer region into the inlet of the evaporation space of the argon column top condenser, and', 'a ...

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Номер записи: 86

15-05-2014 дата публикации

Helium Management Control System

Номер: US20140130527A1

Автор: Allen J. Bartlett, Doreen J. Ball-Difazio, John J. Varone, Joseph Chopy, Jr., Leonard A. Loranger, Maureen C. Buonpane, Oliver J. Dumas, Paul E. Amundsen, Robert P. Sullivan, Ronald N. Morris

Принадлежит: Brooks Automation Inc

A refrigerant management system controls the supply of refrigerant from two or more variable speed and fixed speed compressors to a plurality of cryogenic refrigerators. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators. The amount of refrigerant to supply is based on an aggregate demand for refrigerant from the plurality of cryogenic refrigerators and a refrigerant correction metric. An appropriate supply of refrigerant is distributed to each cryogenic refrigerator by adjusting the speed of the variable speed compressors or, alternatively, selectively turning the compressors on or off. The speed of the variable speed compressors is adjusted by determining an amount of refrigerant to supply to the plurality of cryogenic refrigerators. If the aggregate demand for refrigerant exceeds the capacity of the compressors, then the speed of a refrigerator within the plurality of refrigerators is adjusted.

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Номер записи: 87

05-03-2015 дата публикации

Method And Device For Separating A Mixture Containing Carbon Dioxide By Means Of Distillation

Номер: US20150059402A1

Автор: Alain Briglia, Arthur Darde, Frederick Lockwood, Xavier Traversac

Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

According to certain embodiments of the invention, a gas containing at least 50% of carbon dioxide is cooled in a first exchanger so as to produce a cooled fluid, a liquid derived from the cooled fluid is sent to a distillation column to be separated therein, a head gas is withdrawn from the distillation column and reheated in the first exchanger, a vat liquid, which is richer in carbon dioxide than the gas containing at least 50% of carbon dioxide, is withdrawn and at least a portion thereof is heated in the first exchanger, at least a first portion of the vat liquid is vaporized in the first exchanger in order to produce a vaporized portion, the vaporized portion is sent back to the column and an NOx removal column is supplied with the liquefied cycle gas produced by vaporizing and reliquefying the vat liquid from the column.

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Номер записи: 88

10-03-2022 дата публикации

Natural Gas Liquefaction By A High Pressure Expansion Process

Номер: US20220074652A1

Автор: JR. Fritz, Pierre

Принадлежит:

A method and system for liquefying a methane-rich high-pressure feed gas stream using a first heat exchanger zone and a second heat exchanger zone. The feed gas stream is mixed with a refrigerant stream to form a second gas stream, which is compressed, cooled, and directed to a second heat exchanger zone to be additionally cooled below ambient temperature. It is then expanded to a pressure less than 2,000 psia and no greater than the pressure to which the second gas stream was compressed, and then separated into a first expanded refrigerant stream and a chilled gas stream. The first expanded refrigerant stream is expanded and then passed through the first heat exchanger zone such that it has a temperature that is cooler, by at least 5° F., than the highest fluid temperature within the first heat exchanger zone. 1. A method for liquefying a feed gas stream rich in methane , where the method comprises:(a) providing the feed gas stream at a pressure less than 1,200 psia;(b) compressing the feed gas stream to a pressure of at least 1,500 psia to form a compressed gas stream;(c) cooling the compressed gas stream by indirect heat exchange with an ambient temperature air or water, to form a cooled, compressed gas stream;(d) expanding the cooled, compressed gas stream in at least one work producing expander to a pressure that is less than 2,000 psia and no greater than the pressure to which the gas stream was compressed, to thereby form a chilled gas stream;(e) providing a compressed refrigerant stream with a pressure greater than or equal to 1,500 psia;(f) cooling the compressed refrigerant stream by indirect heat exchange with an ambient temperature air or water, to produce a compressed, cooled refrigerant stream;(g) directing the compressed, cooled refrigerant stream to a second heat exchanger zone, to additionally cool the compressed, cooled refrigerant stream below ambient temperature, to produce a compressed, additionally cooled refrigerant stream;(h) expanding the ...

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Номер записи: 89

10-03-2022 дата публикации

METHOD TO CONTROL THE COOLDOWN OF MAIN HEAT EXCHANGERS IN LIQUEFIED NATURAL GAS PLANT

Номер: US20220074654A1

Автор: Chen Fei, Jin Bo, Okasinski Matthew Joseph

Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

A method to control the cooldown of main heat exchangers in liquefied natural gas plant. The method provides for the automated control of a flow rate of a natural gas feed stream through a heat exchanger based on one or more process variables and set points. The flow rate of refrigerant streams through the heat exchanger is controlled by different process variables and set points, and is controlled independently of the flow rate of the natural gas feed stream. 1. A method for controlling start-up of a heat exchange system having a main heat exchanger comprising a warm end , a cold end , and an intermediate zone , at least one feed stream , and at least one refrigerant stream , the method comprising the steps of:(c) cooling the main heat exchanger from a first temperature profile at a first time to a second temperature profile at a second time, the first temperature profile having a first average temperature that is greater than a second average temperature of the second temperature profile; and{'claim-text': ['(i) measuring a cold end temperature at the cold end of the main heat exchanger;', '(ii) calculating a first value comprising a rate of change of the first cold end temperature;', '(iii) providing a cold end set point representing a preferred rate of change of the cold end temperature;', '(iv) controlling a flow rate of the at least one feed stream through the main heat exchanger based on the first value and the first set point;', '(v) measuring a first intermediate zone temperature at a first location in the intermediate zone of the main heat exchanger;', '(vi) calculating a second value comprising a rate of change of the first intermediate zone temperature;', '(vii) providing a first intermediate zone set point representing a preferred rate of change of the first intermediate zone temperature; and', '(viii) controlling a flow rate of a first stream of the at least one refrigerant stream through the main heat exchanger based on the second value and the second ...

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Номер записи: 90

21-02-2019 дата публикации

ORGANIC RANKINE CYCLE BASED CONVERSION OF GAS PROCESSING PLANT WASTE HEAT INTO POWER

Номер: US20190055857A1

Автор: Kamel Akram Hamed Mohamed, Noureldin Mahmoud Bahy Mahmoud

Принадлежит:

A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant. The system includes an Organic Rankine cycle energy conversion system including a pump, an energy conversion heat exchanger configured to heat the working fluid by exchange with the heated heating fluid stream, a turbine and a generator configured to generate power by expansion of the heated working fluid, a cooling element configured to cool the expanded working fluid after power generation, and an accumulation tank. The heating fluid flows from the accumulation tank, through the waste heat recovery heat exchanger, through the Organic Rankine cycle energy conversion system, and back to the accumulation tank. 1. (canceled)2. A system comprising:a waste heat recovery heat exchanger positioned in a crude oil associated gas processing plant, the waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in the crude oil associated gas processing plant; an energy conversion heat exchanger configured to heat a working fluid by exchange with the heated heating fluid stream;', 'a turbine and a generator, wherein the turbine and generator are configured to generate power by expansion of the heated working fluid; and', 'a cooling element configured to cool the expanded working fluid after power generation;, 'an Organic Rankine cycle energy conversion system comprisingwherein the crude oil associated gas processing plant is configured to process a hydrocarbon gas stream from a well to produce a sales gas comprising methane.3. The system of claim 2 , wherein the energy conversion heat exchanger has a thermal duty of between 3000 MM Btu/h and 3500 MM Btu/h.4. The system of claim 2 , wherein the energy conversion heat exchanger comprises an evaporator.5. The system of claim 2 , wherein the energy conversion heat exchanger is configured to heat the working ...

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Номер записи: 91

21-02-2019 дата публикации

PROCESS AND DEVICE FOR THE CRYOGENIC SEPARATION OF SYNTHESIS GAS

Номер: US20190056176A1

Автор: Lang Martin

Принадлежит: LINDE AKTIENGESELLSCHAFT

The invention relates to a process and device for the cryogenic separation of a methane-containing feed gas predominantly consisting of hydrogen and carbon monoxide, that is partially condensed in this case by cooling, in order to obtain a hydrogen-containing first liquid phase predominantly consisting of carbon monoxide and methane, from which first liquid phase, in an Hseparation column that is heated via a circulation heater, a second liquid phase is generated by separating off hydrogen, from which second liquid phase, in a CO/CHseparation column, a carbon monoxide-rich gas phase is obtained having a purity that permits release thereof as carbon monoxide product. It is characteristic in this case that a low-methane material stream is withdrawn from the Hseparation column and is then applied to the CO/CHseparation column as reflux. 1151811922829263412. Process for the cryogenic separation of a methane-containing feed gas () predominantly consisting of hydrogen and carbon monoxide , that is partially condensed in this case by cooling , in order to obtain a hydrogen-containing first liquid phase () predominantly consisting of carbon monoxide and methane , from which first liquid phase , in an Hseparation column (T) that is heated via a circulation heater () , a second liquid phase () is generated by separating off hydrogen () , from which second liquid phase , in a CO/CHseparation column (T) , a carbon monoxide-rich gas phase () is obtained having a purity that permits release thereof as carbon monoxide product () , characterized in that a low-methane material stream ( , ) is withdrawn from the Hseparation column (T) and is then applied to the CO/CHseparation column (T) as reflux.22612. Process according to claim 1 , characterized in that the low-methane material stream () is withdrawn in the gaseous state from the Hseparation column (T) and liquefied by cooling before introduction thereof into CO/CHseparation column (T).3261. Process according to claim 1 , ...

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Номер записи: 92

01-03-2018 дата публикации

Refrigerant Recovery in Natural Gas Liquefaction Processes

Номер: US20180058752A1

Автор: Johnston Brian Keith, Krishnamurthy Gowri, Roberts Mark Julian

Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

Described herein is a method of removing refrigerant from a natural gas liquefaction system in which vaporized mixed refrigerant is withdrawn from the closed-loop refrigeration circuit and introduced into a distillation column so as to be separated into an overhead vapor enriched in methane and a bottoms liquid enriched in heavier components. Overhead vapor is withdrawn from the distillation column to form a methane enriched stream that is removed from the liquefaction system, and bottoms liquid is reintroduced from the distillation column into the closed-loop refrigeration circuit. Also described are methods of altering the rate of production in a natural gas liquefaction system in which refrigerant is removed as described above, and a natural gas liquefaction systems in which such methods can be carried out. 1. A method of removing refrigerant from a natural gas liquefaction system during shutdown , turndown , or other occurrences or upset situations , that uses a mixed refrigerant to liquefy and/or subcool natural gas , the mixed refrigerant comprising a mixture of methane and one or more heavier components , and the liquefaction system comprising a closed-loop refrigeration circuit in which the mixed refrigerant is circulated when the liquefaction system is in use , the closed-loop refrigeration circuit including a main heat exchanger through which natural gas is fed to be liquefied and/or subcooled by indirect heat exchange with the circulating mixed refrigerant , the method comprising:(a) withdrawing vaporized mixed refrigerant from the closed-loop refrigeration circuit; wherein the vaporized mixed refrigerant is withdrawn from a shell side of the main heat exchanger;(b) introducing the vaporized mixed refrigerant into a distillation column and providing reflux to the distillation column so as to separate the vaporized mixed refrigerant into an overhead vapor enriched in methane and a bottoms liquid enriched in heavier components;(c) withdrawing overhead vapor ...

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Номер записи: 93

01-03-2018 дата публикации

PROCESS AND APPARATUS FOR PRODUCING CARBON MONOXIDE

Номер: US20180058757A1

Автор: Fenner Gary W., Kalp Bryan S., PARVATHIKAR Sameer, Shah Minish M.

Принадлежит:

The present invention relates to a cold box cycle which allows for independent control of the heat supplied for reboilers associated with the separation columns. More specifically, the invention relates to the tight control of the hydrogen removal separation, thus avoiding the possibility of excess reboiling in this separation. Optimal reboiling also results in a lower temperature of the hydrogen depleted liquid from this separation. As this stream is used to provide a portion of the cooling at the cold end of the primary heat exchanger, lower temperatures facilitate cooling of the incoming syngas feed, reducing carbon monoxide (CO) losses into the crude hydrogen stream from the high pressure separator. Lower CO in the crude hydrogen allows for smaller hydrogen purification equipment. 1. A method for the separation of carbon monoxide and hydrogen from a syngas feedstock , comprising:cooling and partially condensing the syngas feedstock containing carbon monoxide and hydrogen in a primary heat exchanger to produce a cooled and partially condensed syngas feed stream;separating the cooled and partially condensed syngas feed stream in a first hydrogen rich vapor stream and a first carbon monoxide rich liquid stream in a high pressure separator;feeding the first carbon monoxide rich liquid stream to a hydrogen removal column operating at a pressure lower than the high pressure separator, wherein a second hydrogen rich vapor stream is separated from a second carbon monoxide rich stream;splitting said second carbon monoxide rich stream into two portions wherein a first portion of the second carbon monoxide rich stream is at least partially vaporized in the primary heat exchanger and providing a second portion of the second carbon monoxide rich stream wherein both portions are introduced into a carbon monoxide/methane column for separating purified carbon monoxide vapor stream from a methane rich liquid stream;separating a portion of the cooled syngas feedstock to provide ...

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Номер записи: 94

02-03-2017 дата публикации

MODIFIED GOSWAMI CYCLE BASED CONVERSION OF GAS PROCESSING PLANT WASTE HEAT INTO POWER AND COOLING WITH FLEXIBILITY

Номер: US20170058709A1

Автор: Kamel Akram Hamed Mohamed, Noureldin Mahmoud Bahy Mahmoud

Принадлежит:

A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and a modified Goswami energy conversion system. The modified Goswami energy conversion system includes a first group of heat exchangers configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream; and a second group of heat exchangers configured to heat a second portion of the working fluid. The modified Goswami energy conversion system includes a rectifier configured to receive the heated first and second portions of the working fluid and a third portion of the working fluid and to output an overhead discharge stream and a liquid stream, the third portion of the working fluid being at a lower temperature than the heated first and second portions of the working fluid. The modified Goswami energy conversion system includes a cooling subsystem including one or more cooling elements configured to cool a chilling fluid stream by exchange with the overhead discharge stream; and a turbine configured to generate power from the liquid stream of the working fluid. 1. A system comprising:a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and a first group of energy conversion system heat exchangers configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream, the working fluid comprising ammonia and water;', a first heat exchanger configured to heat the second portion of the working fluid by exchange with a liquid stream of the working fluid; and', 'a second heat exchanger configured to receive the second portion of the working fluid from the first heat exchanger and to heat the second portion of the working fluid by exchange with the heated heating fluid stream;, 'a second group of energy conversion system heat ...

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Номер записи: 95

02-03-2017 дата публикации

REFRIGERATION SYSTEM INCLUDING MICRO COMPRESSOR-EXPANDER THERMAL UNITS

Номер: US20170059213A1

Автор: Barclay John A., Ferguson Lucian G.

Принадлежит:

An active gas regenerative refrigerator includes a plurality of compressor-expander units, each having a hermetic cylinder with a drive piston configured to be driven reciprocally therein, and a quantity of working fluid in each end of the cylinder. A piston seal in a central portion of the cylinder prevents passage of the working fluid between ends of the cylinder. Movement of the piston to a first extreme results in radial compression of one of the quantities of working fluid in a cylindrical gap formed between one end of the piston and an inner surface of the cylinder, while the other quantity is expanded in the opposite end of the cylinder. The piston includes a plurality of magnets arranged in pairs, with magnets of each pair positioned with like-poles facing each other. A piston drive is configured to couple with transverse magnetic flux regions formed by the magnets. 1. An active gas regenerative refrigerator , comprising: a main cylinder having first and second cylinder ends and a central cylinder region between the first and second cylinder ends;', 'a first quantity of working fluid positioned in the first cylinder end;', 'a second quantity of working fluid positioned in the second cylinder end;', 'a drive piston positioned inside the main cylinder and having first and second piston ends and a central piston region, the first piston end having a diameter that is less than an inside diameter of the first cylinder end such that when the drive piston is moved to a first extreme, the first mass of working fluid is compressed into a first radial gap formed between a radial surface of the first piston end and an inner radial face of the first cylinder end, the second piston end having a diameter that is less than an inside diameter of the second cylinder end such that when the drive piston is moved to a second extreme, the second mass of working fluid is compressed into a second radial gap formed between a radial surface of the second piston end and an inner ...

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Номер записи: 96

04-03-2021 дата публикации

Liquefaction of Production Gas

Номер: US20210063083A1

Автор: Kaminsky Robert D., Staedter Marcel

Принадлежит: EXXONMOBIL UPSTREAM RESEARCH COMPANY

A method and apparatus for liquefying a feed gas stream comprising natural gas and carbon dioxide. A method includes compressing an input fluid stream to generate a first intermediary fluid stream; cooling the first intermediary fluid stream with a first heat exchanger to generate a second intermediary fluid stream, wherein a temperature of the second intermediary fluid stream is higher than a carbon dioxide-freezing temperature for the second intermediary fluid stream; expanding the second intermediary fluid stream to generate a third intermediary fluid stream, wherein the third intermediary fluid stream comprises solid carbon dioxide; separating the third intermediary fluid stream into a fourth intermediary fluid stream and an output fluid stream, wherein the output fluid stream comprises a liquefied natural gas (LNG) liquid; and utilizing the fourth intermediary fluid stream as a cooling fluid stream for the first heat exchanger. 1. A method , comprising:compressing an input fluid stream to generate a first intermediary fluid stream;cooling the first intermediary fluid stream with a first heat exchanger to generate a second intermediary fluid stream, wherein a temperature of the second intermediary fluid stream is higher than a carbon-dioxide-freezing temperature for the second intermediary fluid stream;expanding the second intermediary fluid stream to generate a third intermediary fluid stream, wherein the third intermediary fluid stream comprises solid carbon dioxide;separating the third intermediary fluid stream into a fourth intermediary fluid stream and an output fluid stream, wherein the output fluid stream comprises a liquefied natural gas (LNG) liquid; andutilizing the fourth intermediary fluid stream as a first cooling fluid stream for the first heat exchanger.2. The method of claim 1 , further comprising claim 1 , after utilizing the fourth intermediary fluid stream as the cooling fluid stream claim 1 , burning the fourth intermediary fluid stream.3. ...

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Номер записи: 97

17-03-2022 дата публикации

METHOD AND FILLING DEVICE FOR FILLING A TRANSPORT TANK

Номер: US20220082210A1

Автор: DECKER Lutz, KNOCHE Martin, Müller René

Принадлежит:

The present invention pertains to a method for filling a transport tank with a product medium in a liquid state in a gas liquefaction plant, comprising a step of supplying the product medium in the liquid state from a storage tank () of the gas liquefaction plant to the transport tank. The method is characterized in that it further comprises a step of discharging the product medium in a gaseous state from the transport tank into the storage tank (). 1. Method for filling a transport tank with a product medium in a liquid state in a gas liquefaction plant , comprising a step of supplying the product medium in the liquid state from a storage tank of the gas liquefaction plant to the transport tank , whereinthe method further comprises a step of discharging the product medium in a gaseous state from the transport tank to the storage tank.2. Method according to claim 1 , wherein the product medium in the gaseous state stored in the transport tank is fed into the storage tank downstream of a cooling and liquefying unit of the gas liquefaction plant which generates a liquid product medium stream to be supplied to the storage tank.3. Method according to claim 1 , wherein the product medium in the gaseous state stored in the transport tank is fed into the storage tank in its gaseous state.4. Method according to claim 1 , wherein the storage tank stores the product medium in both a liquid and a gaseous phase claim 1 , and the product medium in the gaseous state is discharged from the transport tank into the storage tank such that the product medium in the gaseous state is fed into the liquid phase.5. Method according to claim 1 , wherein the product medium in the gaseous state supplied to the storage tank from the transport tank is fed into a static mixer provided in or upstream of the storage tank.6. Method according to claim 1 , wherein the product medium in its gaseous state discharged from the transport tank is fed into a feed gas stream which claim 1 , upon flowing ...

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Номер записи: 98

10-03-2016 дата публикации

Production of ammonia make-up syngas with cryogenic purification

Номер: US20160068389A1

Автор: Ermanno Filippi, Geoffrey Frederick Skinner

Принадлежит: Casale SA

A process and a related equipment for making ammonia make-up synthesis gas are disclosed, where: a hydrocarbon feedstock is reformed obtaining a raw ammonia make-up syngas stream; said raw syngas is purified in a cryogenic purification section refrigerated by a nitrogen-rich stream produced in an air separation unit; the nitrogen-rich stream at output of said cryogenic section is further used for adjusting the hydrogen/nitrogen ratio of the purified make-up syngas; an oxygen-rich stream is also produced in said air separation unit and is fed to the reforming section.

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Номер записи: 99

28-02-2019 дата публикации

NOVEL PRODUCTION EQUIPMENT AND PRODUCTION METHOD OF LIQUEFIED HYDROGEN AND LIQUEFIED NATURAL GAS

Номер: US20190063824A1

Автор: MATSUHARA Toru, Nakayama Toru, OMORI Hidefumi, WATANABE Shintaro, Watanabe Yoshiyuki

Принадлежит: JGC CORPORATION

Provided is a production facility for liquefied hydrogen and a liquefied natural gas from a natural gas, including: a first heat exchanger configured to cool a hydrogen gas through heat exchange between the hydrogen gas and a mixed refrigerant for liquefying a natural gas containing a plurality of kinds of refrigerants selected from the group consisting of methane, ethane, propane, and nitrogen; a second heat exchanger configured to cool the mixed refrigerant through heat exchange between the mixed refrigerant and propane; and a third heat exchanger configured to cool the hydrogen gas through heat exchange between the hydrogen gas and a refrigerant containing hydrogen or helium, wherein the first heat exchanger has a precooling temperature of from −100° C. to −160° C. 1. A production facility for liquefied hydrogen and a liquefied natural gas from a natural gas , comprising:a first heat exchanger configured to cool a hydrogen gas through heat exchange between the hydrogen gas and a mixed refrigerant for liquefying a natural gas containing a plurality of kinds of refrigerants selected from the group consisting of methane, ethane, propane, and nitrogen;a second heat exchanger configured to cool the mixed refrigerant through heat exchange between the mixed refrigerant and propane; anda third heat exchanger configured to cool the hydrogen gas through heat exchange between the hydrogen gas and a refrigerant containing hydrogen or helium,wherein the first heat exchanger has a precooling temperature of from −100° C. to −160° C.2. The production facility for liquefied hydrogen and a liquefied natural gas according to claim 1 ,wherein the production facility further comprises at least one natural gas pretreatment unit selected from the group consisting of a condensate separation unit, an acid gas removal unit, and a mercury removal unit, andwherein the production facility has a configuration in which a natural gas having been subjected to the pretreatment unit is divided ...

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Номер записи: 100