Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 1811. Отображено 100.
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.

Подробнее
Номер записи: 1
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.

Подробнее
Номер записи: 2
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.

Подробнее
Номер записи: 3
22-11-2012 дата публикации

Process For The Production Of Hydrogen And Carbon Dioxide

Номер: US20120291485A1
Автор: Arthur Darde, Bhadra S. Grover, Dennis A. Vauk, Pascal Marty, 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

This present invention provides a method to more efficiently recover hydrogen and carbon dioxide, preferably at least 50%, even more preferably at least 75%, and most preferably at least 90% of the carbon dioxide. The present invention further provides the design for capture of at least 80%, carbon dioxide from syngas that allows for the simultaneous production of medium to high amounts of hydrogen in the syngas as a part of the production of hydrogen in a hydrogen generation plant. By using the process of the present invention, especially in terms of a hydrogen generation plant, it is possible to increase recovery of hydrogen and capture of the carbon dioxide in the syngas stream by balancing the recycle of the hydrogen rich permeate from the hydrogen membrane separation units to the process unit and/or the water gas shift as capacity allows when a carbon dioxide separation unit, a carbon dioxide membrane separation unit and two hydrogen membrane separation units are utilized.

Подробнее
Номер записи: 4
25-04-2013 дата публикации

Cryogenic Systems For Removing Acid Gases From A Hydrocarbon Gas Stream Using Co-Current Separation Devices

Номер: US20130098105A1
Автор: Northrop Paul Scott
Принадлежит:

A system for removing acid gases from a raw gas stream is provided. The system includes a cryogenic distillation column. The cryogenic distillation column receives a dehydrated and chilled sour gas stream, and separates the sour gas stream into an overhead gas stream comprised primarily of methane, and a bottom acid gas stream comprised primarily of carbon dioxide. The system also includes a series of co-current contactors. The co-current contactors may be placed in series to receive the bottom acid gas stream and recapture any entrained methane gas. Alternatively or in addition, the co-current contactors may be placed in series to receive the overhead gas stream, and sweeten it using a reflux liquid such as methane. In this instance, the sweetened gas is optionally liquefied and delivered for commercial sale, or is used as fuel gas on-site. 1. A system for removing acid gases from a raw gas stream , comprising:a dehydration vessel for receiving the raw gas stream, and separating the raw gas stream into a dehydrated raw gas stream and a stream comprised substantially of an aqueous fluid;a heat exchanger for cooling the dehydrated gas stream, and releasing a cooled sour gas stream;a cryogenic distillation tower that receives the cooled sour gas stream, and separates the cooled sour gas stream into (i) an overhead gas stream comprised primarily of methane, and (ii) a bottom liquefied acid gas stream comprised primarily of carbon dioxide;a final co-current contactor configured to (i) receive the bottom liquefied acid gas stream, (ii) receive a partially-methane-enriched gas stream from a previous co-current contactor, (iii) release a final methane-enriched gas stream to the cryogenic distillation tower, and (iv) release a first partially-stripped acid gas liquid to the previous co-current contactor; anda first co-current contactor configured to (i) receive a stripping gas, (ii) receive a second partially-stripped acid gas liquid from a second co-current contactor, (iii ...

Подробнее
Номер записи: 5
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.

Подробнее
Номер записи: 6
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.

Подробнее
Номер записи: 7
31-10-2013 дата публикации

Purification of Carbon Dioxide

Номер: US20130283851A1
Автор: Higginbotham Paul, Palamara John Eugene
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

Impurities that are less volatile than carbon dioxide, e.g. hydrogen sulphide, are removed from crude carbon dioxide by processes involving sub-ambient distillation of said crude carbon dioxide in a distillation column system operating at super-atmospheric pressure(s) to produce carbon dioxide-enriched overhead vapour and bottoms liquid enriched with said impurities. Where such processes involve at least one heat pump cycle, significant savings in power consumption are realised when the process uses more than one recycle pressure in the heat pump cycle(s). 2. The process of comprising a single heat pump cycle comprising a least a first recycle fluid and a second recycle fluid claim 1 , said second recycle fluid having a pressure that is greater than that of said first recycle fluid.3. The process of claim 2 , wherein the pressure of said second recycle fluid is at least 10% greater than the pressure of said first recycle fluid.4. The process of claim 2 , wherein the pressure of said first recycle fluid is from about 15 bar to about 30 bar.5. The process of claim 2 , wherein the pressure of said second recycle fluid is from about 20 bar to about 70 bar.6. The process of claim 2 , wherein said working fluid comprises carbon dioxide-enriched gas generated by warming said carbon dioxide-enriched overhead vapour by indirect heat exchange.7. The process of claim 6 , wherein at least a portion of the duty required to warm said carbon dioxide-enriched overhead vapour is provided by indirect heat exchange against at least one of said recycle streams.8. The process of claim 2 , wherein said recycle fluids are recycled to an appropriate location in said distillation column system after suitable pressure reduction.9. The process of claim 2 , wherein ratio of molar flow of said first recycle fluid to said second recycle fluid is from about 0.1 (i.e. 1:10) to about 10 (i.e. 10:1).10. The process of claim 9 , wherein said ratio is from about 3 (i.e. 3:1) to about 10 (i.e. 10:1).11 ...

Подробнее
Номер записи: 8
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.

Подробнее
Номер записи: 9
14-11-2013 дата публикации

METHOD AND EQUIPMENT FOR PURIFYING A GAS STREAM

Номер: US20130299337A1
Автор: Briglia Alain, Darde Arthur, Szamlewski Christophe, Traversac Xavier
Принадлежит: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude

The invention relates to a method for compressing at least two gas streams by means of a single compressor that does not support a fluctuation in flow rate and/or pressure above a critical percentage, said method being characterized in that at least one of the gas streams is fed into a buffer space before being fed into the single compressor. 19-. (canceled)11. The process of claim 10 , wherein during a reduction of the flow rate of one of the first stream or the second stream claim 10 , at least one portion of the stream leaving the final equipment is reintroduced into the buffer tank.12. The process of claim 10 , further comprising separating the liquefied product stream into a first stream claim 10 , a second stream and a third stream claim 10 , vaporizing the three streams at three pressure levels; recovering the three gas streams at three pressure claim 10 , wherein the first steam and the second stream are recovered at the lowest pressures and are compressed in two intermediate compression means to the pressure of the third stream recovered before being mixed therewith.13. The process of claim 12 , wherein the pressure of the first stream is between 5 and 6.5 bar a; the pressure of the second stream is between 7 and 10 bar a;and the pressure of the third stream is between 8 and 25 bar a.14. The process of claim 10 , wherein the main compound is CO.15. The process of claim 10 , wherein the final equipment is a compressor.16. An apparatus for purifying a gas stream comprising at least 50 mol % of CO claim 10 , comprising:i) a first compressor for compressing the gas stream;ii) a heat exchanger for cooling the compressed gas stream;iii) a phase separator or a distillation column for separating the carbon dioxide from the compressed and cooled stream;{'sub': '2', 'iv) a divider for separating, at least into two streams, the liquid COresulting from the distillation column;'}v) at least 2 expansion valves for expanding the two divided streams;vi) at least one ...

Подробнее
Номер записи: 10
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.

Подробнее
Номер записи: 11
21-11-2013 дата публикации

Heavy Hydrocarbon Processing in NGL Recovery System

Номер: US20130305777A1
Автор: Baker Naomi, Garikipati Jhansi, Prim Eric
Принадлежит: Pilot Energy Solutions, LLC

A method for processing heavy hydrocarbons in an NGL recovery system is provided. In one embodiment, a feed stream is separated into a carbon dioxide recycle stream and a heavy hydrocarbon stream. The heavy hydrocarbon stream comprises carbon dioxide and natural gas liquids, and the heavy hydrocarbon stream comprises heavy hydrocarbons. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a set of process equipment comprises a first separator and a second separator. The first separator is configured to separate a feed stream into a recycle stream and a heavy hydrocarbons stream, and the second separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. 1. A method comprising:separating a feed stream into a carbon dioxide recycle stream and a heavy hydrocarbon stream, wherein the carbon dioxide recycle stream comprises carbon dioxide and natural gas liquids, and wherein the heavy hydrocarbon stream comprises heavy hydrocarbons; andseparating the carbon dioxide recycle stream into a purified carbon dioxide recycle stream and a natural gas liquids stream, wherein the purified carbon dioxide recycle stream comprises the carbon dioxide, and wherein the natural gas liquids stream comprises the natural gas liquids.2. The method according to claim 1 , wherein the natural gas liquids comprise Cto Chydrocarbons claim 1 , and wherein separating the carbon dioxide recycle stream into the purified carbon dioxide recycle stream and the natural gas liquids stream comprises separating the Cto Cinto the natural gas liquids stream.3. The method according to claim 1 , wherein the heavy hydrocarbons comprise C hydrocarbons claim 1 , and wherein separating the feed stream into the carbon ...

Подробнее
Номер записи: 12
07-01-2021 дата публикации

ALKALI-BASED REMOVAL OF CHEMICAL MOIETIES FROM GAS STREAMS WITH CHEMICAL CO-GENERATION

Номер: US20210001270A1
Автор: Forrest Brock Alan, LU XIJIA, Palmer Miles R.
Принадлежит:

The present disclosure provides systems and methods useful in capture of one more moieties (e.g., carbon dioxide) from a gas stream (i.e., direct air capture). In various embodiments, the systems and methods can utilize at least a scrubbing unit, a regeneration unit, and an electrolysis unit whereby an alkali solution can be used to strip the moiety (e.g., carbon dioxide) from the gas stream, the removed moiety can be regenerated and optionally purified for capture or other use, and a formed salt can be subjected to electrolysis to recycle the alkali solution back to the scrubber for re-use with simultaneous production of one or more further chemicals. 1. A system for capture of carbon dioxide with co-generation or one or more chemicals , the system comprising:a compression unit configured to provide a compressed carbon dioxide containing gas discharge stream;a scrubbing unit configured for contacting the compressed carbon dioxide containing gas discharge stream with an alkali solution to form a carbonate solution and output a carbon dioxide lean gas stream;a regeneration unit configured for reacting the carbonate solution with a halogenated compound to form one or more metal salts and output a stream comprising carbon dioxide; andan electrolysis unit configured to react the one or more metal salts with water to regenerate the alkali solution and form one or more further chemicals.2. The system of claim 1 , wherein the compression unit is an air capture plant.3. The system of claim 1 , wherein the alkali solution comprises a solution of one or more metal salts claim 1 , the metal being chosen from alkali metals claim 1 , alkaline earth metals claim 1 , and combinations thereof.4. The system of claim 3 , wherein the alkali solution comprises a solution of sodium hydroxide.5. The system of claim 1 , further comprising a crystallization unit configured to receive at least a portion of the carbonate solution and output at least one or more solids.6. The system of claim ...

Подробнее
Номер записи: 13
07-01-2016 дата публикации

SYSTEMS AND METHODS FOR RECOVERING CARBON DIOXIDE FROM INDUSTRIALLY RELEVANT WASTE STREAMS, ESPECIALLY ETHANOL FERMENTATION PROCESSES, FOR APPLICATION IN FOOD AND BEVERAGE PRODUCTION

Номер: US20160003532A1
Автор: Hotton Kevin D, Lewis Matthew J, Young Andrew C
Принадлежит: PIONEER ENERGY INC

A system for recovering CO2 via liquefaction and purification from a vented CO2 gas stream comprising a compressor; a dehydrator; a scrubber; a refrigerator having one or more stages; and a separation subsystem adapted to ensure non-condensable gas content in the final product meets industry standards. The liquid CO2 product is of sufficient purity to be used in applications requiring beverage-grade CO2. The system can be utilized as a single-brewery installation to reduce venting from ethanol fermenters to an absolute minimum, produce a high purity liquid CO2 product for use in-process or external sales, and offset the purchasing of expensive, industrial CO2 of inferior purity. 1. An apparatus for recovering via purification and liquefaction of carbon dioxide gas from a vented CO2 waste gas stream , comprising:a chassis adapted for installation inside a space-limited production facility;one or more compressors for compressing the raw CO2 gas stream;one or more dehydrators for removing water from the compressed CO2 gas stream;one or more scrubbers containing solid-state adsorbent for deodorizing and purifying the inlet CO2 gas stream;a refrigerator having one or more stages for lowering a temperature of the dehydrated, deodorized, compressed CO2 stream; anda separation subsystem system adapted to separate the liquefied CO2 product from any remaining contamination by non-condensable gases, especially oxygen.2. The apparatus of claim 1 , wherein the final oxygen content is less than 30 parts per million.3. The apparatus of claim 1 , wherein the final water content is less than 20 parts per million.4. The apparatus of claim 1 , wherein the liquid CO2 product has no foreign color claim 1 , taste claim 1 , or odor.5. The apparatus of claim 1 , wherein the liquid CO2 product meets a beverage-grade standard.6. The apparatus of claim 1 , wherein the one or more compressors compress the raw natural gas stream to a pressure range of 75 psia to 300 psia.7. The apparatus of ...

Подробнее
Номер записи: 14
07-01-2016 дата публикации

SEPARATION AT SUB-AMBIENT TEMPERATURE OF A GASEOUS MIXTURE CONTAINING CARBON DIOXIDE AND A LIGHTER CONTAMINANT

Номер: US20160003533A1
Автор: Briglia Alain, LECLERC Mathieu
Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

A device for separating a gas mixture containing at least 35 mol % carbon dioxide and also at least one gas lighter than carbon dioxide, comprising a first phase separator configured to receive a first partially condensed flow from an exchange line; a first phase separator configured to separate the gas phase from the liquid phase; a cooling means configured to receive the gas phase from the first phase separator and cool said gas phase to form a second partially condensed flow. The resulting liquid phase is then sent to a first valve and is expanded to a lower pressure that is at most 300 mbar lower in order to form a first expanded liquid, which is then mixed with a second liquid originating from the second phase separator in a mixing means that is located upstream of a third valve. 115-. (canceled)16. A process for separating a gas mixture containing at least 35 mol % carbon dioxide and also at least one gas lighter than carbon dioxide , the process comprising the steps of:i) cooling the mixture in order to form a first partially condensed flow;ii) sending the first partially condensed flow to a first phase separator;iii) cooling a gas from the first phase separator, containing less carbon dioxide than the gas mixture, in order to form a second partially condensed flow, wherein step iii) is done without the gas from the first phase separator having been compressed;iv) sending the second partially condensed flow to a second phase separator;v) withdrawing a liquid from the first phase separator, wherein the liquid from the first phase separator contains more carbon dioxide than the gas mixture;vi) expanding, in the absence of externally provided heat, the liquid from the first phase separator in a first valve to reduce the pressure of the liquid from the first phase separator by at most 300 mbar in order to form a first expanded liquid;vii) mixing the first expanded liquid with a second liquid originating from the second phase separator in order to form a third ...

Подробнее
Номер записи: 15
02-01-2020 дата публикации

Mixing and Heat Integration of Melt Tray Liquids in a Cryogenic Distillation Tower

Номер: US20200003490A1
Автор: Maher David W., Mart Charles J., Smith Ransdall K., Valencia Jaime A.
Принадлежит:

A cryogenic distillation tower for separating a feed stream. The tower includes a distillation section. A controlled freeze zone section is situated above the distillation section and forms a solid from the feed stream. The controlled freeze zone section includes a spray assembly in an upper section and a melt tray assembly in a lower section. The melt tray assembly includes at least one vapor stream riser that directs the vapor from the distillation section into liquid retained by the melt tray assembly, and one or more draw-off openings positioned to permit a portion of the liquid to exit the controlled freeze zone section. The portion of the liquid indirectly exchanges heat with a heating fluid. One or more return inlets return the portion of the liquid to the melt tray assembly after it has been heated in the heat exchanger. 1. A cryogenic distillation tower for separating a feed stream , the distillation tower comprising:a distillation section permitting vapor to rise upwardly therefrom;one or more lines for directing the feed stream into the distillation tower; a spray assembly in an upper section of the controlled freeze zone, and', at least one vapor stream riser that directs the vapor from the distillation section into liquid retained by the melt tray assembly, and', 'one or more draw-off openings positioned to permit a portion of the liquid retained by the melt tray assembly to exit the controlled freeze zone section;, 'a melt tray assembly in a lower section of the controlled freeze zone, wherein the melt tray assembly includes'}], 'a controlled freeze zone section situated above the distillation section, the controlled freeze zone constructed and arranged to form a solid from the feed stream, the controlled freeze zone section including'}a heat exchanger arranged to heat the portion of the liquid through indirect heat exchange with a heating fluid; andone or more return inlets that return the portion of the liquid to the melt tray assembly after the ...

Подробнее
Номер записи: 16
12-01-2017 дата публикации

Methods and systems for increasing the carbon content of sponge iron in a reduction furnace

Номер: US20170009309A1
Автор: Mirmohammadyousef MOTAMEDHASHEMI
Принадлежит: Midrex Technologies Inc

A method for producing direct reduced iron having increased carbon content, comprising: providing a carbon monoxide-rich gas stream; and delivering the carbon-monoxide-rich gas stream to a direct reduction furnace and exposing partially or completely reduced iron oxide to the carbon monoxide-rich gas stream to increase the carbon content of resulting direct reduced iron. The carbon monoxide-rich gas stream is delivered to one or more of a transition zone and a cooling zone of the direct reduction furnace. Optionally, providing the carbon monoxide-rich gas stream comprises initially providing one of a reformed gas stream from a reformer and a syngas stream from a syngas source. Optionally, the carbon monoxide-rich gas stream is derived, at least in part, from a carbon monoxide recovery unit that forms the carbon monoxide-rich gas stream and an effluent gas stream. Optionally, the method still further includes providing a hydrocarbon-rich gas stream to one or more of a transition zone and a cooling zone of the direct reduction furnace, with and/or separate from the carbon monoxide-rich gas stream.

Подробнее
Номер записи: 17
15-01-2015 дата публикации

METHOD FOR SEPARATING OFF ACID GASES FROM NATURAL GAS

Номер: US20150013380A1
Автор: BAUER Heinz, GOLLWITZER Claudia
Принадлежит: LINDE AKTIENGESELLSCHAFT

A method is provided for separating off acid gases, in particular COand HS, from a hydrocarbon-rich fraction, in particular natural gas. The hydrocarbon-rich fraction is cooled and partially condensed. The resultant CO-enriched liquid fraction is separated by rectification into a CO-rich liquid fraction and a CO-depleted gas fraction. The hydrocarbon-rich fraction is cooled close to the temperature of the COtriple point by means of a closed multistage refrigeration circuit. The refrigerant is a COfraction of greater than 99.5% by volume. The rectification column is operated at a pressure between 40 and 65 bar. The reboiler of the rectification column is heated by means of a condensing refrigerant substream of the refrigeration circuit that is at a suitable pressure level. 114. A method for separating off acid gases from a hydrocarbon-rich fraction , wherein (a) the hydrocarbon-rich fraction is cooled and partially condensed (E-E) , and (b) the resultant CO-enriched liquid fraction is separated by rectification into a CO-rich liquid fraction and a CO-depleted gas fraction , said method comprising:{'sub': 2', '2, 'cooling the hydrocarbon-rich fraction to close to the temperature of the COtriple point (−56.6° C.) by means of a closed multistage refrigeration circuit, the refrigerant of which has a COfraction of greater than 99.5% by volume,'}operating the rectification column at a pressure between 40 and 65 bar, andheating a reboiler of the rectification column by means of a condensing refrigerant substream of the refrigeration circuit that is at a suitable pressure level.2. The method according to claim 1 , wherein said acid gases are COand HS claim 1 , and said hydrocarbon-rich fraction is natural gas.3. The method according to claim 1 , wherein said hydrocarbon-rich fraction is not cooled below a temperature of −55° C.4. The method according to claim 3 , wherein said hydrocarbon-rich fraction is not cooled below a temperature of −52° C.5. The method according to ...

Подробнее
Номер записи: 18
16-01-2020 дата публикации

High-pressure density-driven separation

Номер: US20200018544A1
Автор: Reza Espanani, William Jacoby
Принадлежит: University of Missouri System

In general, the present invention is directed to processes for separating a vapor comprising a first component and a second component using high-pressure density-driven separation. The present invention further relates to various processes for the capture of carbon dioxide. In particular, various processes of the present invention relate to the separation of carbon dioxide from flue gas of combustion processes. The invention also applies to upgrading fuel gases containing carbon dioxide. The invention also applies to separation of hydrogen from fuel gas vapor solutions.

Подробнее
Номер записи: 19
26-01-2017 дата публикации

METHOD AND DEVICE FOR GENERATING A GAS PRODUCT

Номер: US20170023295A1
Автор: Albert Florian, Brandl Alexander, Klein Bernd
Принадлежит:

The invention relates to a method and also a device for producing a gas product, wherein a first gas stream is combined with a second gas stream and the first gas stream that is present at a lower output pressure than the second gas stream is fed to a mechanical compressor in order to be compressed to the preset pressure of the gas product. It is characteristic in this case that the pressure of the first gas stream is elevated using a gas jet compressor arranged upstream of the mechanical compressor, to which gas jet compressor at least a part of the second gas stream is fed as pumping medium. 1. A method for producing a gas product , wherein a first gas stream is combined with a second gas stream and the first gas stream that is present at a lower output pressure than the second gas stream is fed to a mechanical compressor in order to be compressed to the preset pressure of the gas product , characterized in that the pressure of the first gas stream is elevated using a gas jet compressor arranged upstream of the mechanical compressor , to which gas jet compressor at least a part of the second gas stream is fed as pumping medium.2. The method according to claim 1 , characterized in that the part of the second gas stream that is used as pumping medium is fed directly to the gas jet compressor with substantially the output pressure of the second gas stream or subsequently to a pressure elevation carried out using the mechanical compressor.3. The method according to claim 1 , characterized in that the pressure of the first gas stream is elevated using the gas jet compressor on the output pressure thereof to a value which is greater than or equal to the suction pressure of the mechanical compressor.4. The method according to claim 1 , characterized in that the method is used in the production of a carbon monoxide product in which a synthesis gas predominantly consisting of hydrogen and carbon monoxide is fractionated in a cryogenic separation process claim 1 , wherein a ...

Подробнее
Номер записи: 20
02-02-2017 дата публикации

USING METHANE REJECTION TO PROCESS A NATURAL GAS STREAM

Номер: US20170030634A1
Автор: Yount Christopher Scott, Zigtema John Raymond
Принадлежит:

A process that is configured for treating natural gas mixed with carbon dioxide (CO) in high concentrations of 30% mole by volume or more. In one embodiment, the process comprises contacting a first feedstream comprising liquid natural gas (LNG) with a feedstock comprising methane to form an overhead product comprising methane vapor and a bottom product comprising carbon dioxide (CO). The embodiment can also comprise liquefying the methane vapor to form a LNG product and using the LNG product as the liquid natural gas (LNG) in the first feedstream. 1. A process for treating natural gas , said process comprising contacting a first feedstream comprising liquid natural gas (LNG) with a feedstock comprising methane to form an overhead product comprising methane and a bottom product comprising carbon dioxide (CO).2. The process of claim 1 , further comprising liquefying the overhead product to form a liquefied product.3. The process of claim 2 , further comprising directing a portion of the liquefied product as the first feedstream comprising liquid natural gas (LNG).4. The process of claim 1 , wherein the feedstock further comprises carbon dioxide (CO) in a concentration of 30% mole by volume or more.5. The process of claim 4 , wherein the methane in the overhead product has a concentration of 97% mole by volume or more.6. The process of claim 4 , wherein the carbon dioxide (CO) in the bottom product has a concentration of 80% mole by volume or more.7. The process of claim 1 , further comprising:{'sub': '2', 'distilling the bottom product to generate a vapor comprising methane and a liquid comprising carbon dioxide (CO).'}8. The process of claim 7 , further comprising:increasing the pressure of the vapor from a first pressure to a second pressure that is different from the first pressure.9. The process of claim 8 , further comprising:mixing the vapor at the second pressure into the feedstock.10. The process of claim 7 , further comprising:{'sub': '2', 'boiling the ...

Подробнее
Номер записи: 21
30-01-2020 дата публикации

PROCESS AND APPARATUS FOR THE CRYOGENIC SEPARATION OF A MIXTURE OF CARBON MONOXIDE, HYDROGEN AND METHANE FOR THE PRODUCTION OF CH4

Номер: US20200033055A1
Автор: CORTALE Manon, Demolliens Bertrand, Hernandez Antoine, TEIXEIRA Guillaume
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

In a process of the separation of a mixture of carbon monoxide, hydrogen and methane, the mixture is sent to a scrubbing column, a bottom liquid withdrawn at the bottom of the scrubbing column is depleted in hydrogen with respect to the mixture and is sent to a stripping column, a bottom liquid from the stripping column is sent to a separation column and a liquid enriched in methane withdrawn from the bottom of the separation column is vaporized in order to form a final product. 1. A process for the separation of a mixture of carbon monoxide , hydrogen and methane , the process comprising the steps of:i) sending the mixture or a fluid derived from this mixture, after cooling to a cryogenic temperature in a heat exchanger, to a scrubbing column fed at the top with a liquid containing at least 80 mol % of carbon monoxide or to at least one phase separator;ii) withdrawing a bottom liquid at the bottom of the scrubbing column or of the phase separator or of one of the phase separators is depleted in hydrogen with respect to the mixture and is sent to a stripping column;iii) withdrawing a gas at the top of the stripping column;iv) sending a bottom liquid from the stripping column to a separation column; andv) withdrawing a liquid enriched in methane from the bottom of the separation column and vaporized in the heat exchanger in order to form a final product,wherein the vaporized liquid enriched in methane is compressed in a compressor and a part of the compressed gas is returned at the bottom of the separation column for separation therein.2. The process according to claim 1 , in which the part of the compressed gas is at a lower pressure than that of the compressed final product.3. The process according to claim 1 , in which the scrubbing column is fed at the top with a liquid originating from a condenser where at least a part of the gas from the top of the scrubbing column or originating from the top of the separation column or originating from a cycle for ...

Подробнее
Номер записи: 22
06-02-2020 дата публикации

Heat-Resistant Carbonic Anhydrase Mutants and Composition for Capturing Carbon Dioxide Containing the Same

Номер: US20200040324A1
Автор: Jae Yang Song, Tae Wan Kim, Yeon Hwa La
Принадлежит: SK Innovation Co Ltd

Disclosed are a carbonic anhydrase mutant having heat resistance at a high temperature of 80° C. as well as excellent activity to capture carbon dioxide and a composition for capturing carbon dioxide containing the same. The heat-resistant carbonic anhydrase mutant can be applied to a high-temperature carbon dioxide capture process due to high stability at high temperatures and a high carbon dioxide hydration rate.

Подробнее
Номер записи: 23
18-02-2021 дата публикации

NATURAL GAS LIQUIDS RECOVERY APPARATUS FOR CARBON DIOXIDE REINJECTION ENHANCED OIL RECOVERY, AND METHOD

Номер: US20210048244A1
Автор: Mealey Brent, Temple Ken
Принадлежит:

A method includes: providing a carbon dioxide recycle stream comprising natural gas liquids; separating, using a first distillation tower, the carbon dioxide recycle stream into a first vapor fraction and a first liquid fraction; cooling and partially condensing the first vapor fraction in a heat exchanger to yield a first carbon dioxide stream and a reflux stream; and separating, using a second distillation tower, the first liquid fraction into a second carbon dioxide stream and a natural gas liquids rich stream.

Подробнее
Номер записи: 24
08-05-2014 дата публикации

HEAT INTEGRATION FOR CRYOGENIC CO2 SEPARATION

Номер: US20140123700A1
Автор: STALLMANN Olaf
Принадлежит: ALSTOM Technology Ltd

The present invention relates to a flue gas treatment system for removing COfrom a flue gas stream wherein the system includes a flue gas compressor, at least one flue gas adsorption drier, a refrigeration system and a stripper column allowing distillation. Also a method for condensation of carbon dioxide (CO) in a flue gas stream including a step of separation by distillation of the condensed COis provided by the invention. 1. A flue gas treatment system for removing COfrom a flue gas stream , comprisinga flue gas compressor,at least one flue gas adsorption drier,{'sub': '2', 'claim-text': a multistage refrigerant compressor,', 'a refrigerant condenser,', 'a refrigerant chiller,', 'a flue gas chiller,', 'at least one condenser,, 'a refrigeration system for condensation of carbon dioxide (CO), in a flue gas stream, said system comprising a refrigeration circuit containing a refrigerant, said refrigeration circuit comprising;'}anda stripper column allowing distillation;wherein the flue gas chiller is arranged between the flue gas compressor and the flue gas adsorption drier and the the flue gas adsorption drier and the at least one condenser are arranged in series upstream of the stripper column.2. A flue gas treatment system according to claim 1 , said system comprises a another condenser being arranged in series upstream of the condenser.3. A flue gas treatment system according to claim 1 , said system further comprising{'sub': 2', '2, 'a heat exchanger configured to cool at least a portion of the condensed refrigerant using the COdepleted flue gas from the second COcondenser.'}4. A flue gas treatment system according to claim 1 , said system further comprisinga first heat exchanger configured to cool at least a portion of the condensed refrigerant using the CO2 depleted flue gas from the stripper column,{'sub': '2', 'a second heat exchanger configured to reheat the COdepleted flue gas from the first refrigerant chiller using warm flue gas from the flue gas ...

Подробнее
Номер записи: 25
03-03-2022 дата публикации

DEVICES, SYSTEMS, FACILITIES, AND PROCESSES FOR LIQUEFIED NATURAL GAS PRODUCTION

Номер: US20220065529A1
Автор: Abegg Michael, Fernandes Victor, Heichelbech Ben, Subra Vikrum, Thompson Alex, Van der Walt Ivan
Принадлежит:

Devices, systems, and methods for liquefied natural gas production facilities are disclosed herein. A liquefied natural gas (LNG) production facility includes a liquefaction unit and a gas turbine. The liquefaction unit condenses natural gas vapor into liquefied natural gas. Fuel to the gas turbine contains at least about 90% hydrogen by volume.

Подробнее
Номер записи: 26
25-02-2021 дата публикации

METHOD AND APPLIANCE FOR SEPARATING A SYNTHESIS GAS BY CRYOGENIC DISTILLATION

Номер: US20210055047A1
Автор: Demolliens Bertrand
Принадлежит:

The invention relates to a method for separating a synthesis gas comprising hydrogen and carbon monoxide by cryogenic distillation, according to which the synthesis gas () is cleaned and cooled to a cryogenic temperature, the cooled synthesis gas is separated by a first means () in order to produce a hydrogen-depleted liquid (), the hydrogen-depleted liquid is introduced into the upper part of a stripping column () and a hydrogen-enriched gas () is drawn off at the head of the stripping column, at least partially condensed and sent back to the upper part of the stripping column. 1. A process for the separation of a synthesis gas comprising hydrogen , carbon monoxide and methane , and possibly nitrogen , by cryogenic distillation , in which:{'b': 1', '5, 'i) the synthesis gas (, ) is purified and cooled down to a cryogenic temperature,'}{'b': 9', '15', '91', '15, 'ii) the cooled synthesis gas is separated by a first means (, ) in order to produce a liquid depleted in hydrogen (), the separation carried out by the first means consists of a stage of scrubbing in a scrubbing column () with at least a part of the liquid enriched in methane withdrawn from a column for the separation of carbon monoxide and methane having an overhead condenser, the condenser being cooled by a carbon monoxide cycle, and'}{'b': '25', 'iii) the liquid depleted in hydrogen is introduced into the upper part of a stripping column () which also comprises a lower part,'}{'b': 27', '29, 'iv) a gas enriched in hydrogen (, ) is withdrawn at the top of the stripping column,'}{'b': 33', '45', '43', '77', '29, 'v) a liquid () is withdrawn at the bottom of the stripping column and sent to the separation column (), a gas () enriched in carbon monoxide and depleted in methane is withdrawn at the top of the separation column, a liquid () depleted in carbon monoxide and enriched in methane is withdrawn at the bottom of the separation column and the gas enriched in carbon monoxide is heated by heat exchange ...

Подробнее
Номер записи: 27
25-02-2021 дата публикации

PROCESS AND APPARATUS FOR PRODUCTION OF CARBON MONOXIDE BY PARTIAL CONDENSATION

Номер: US20210055048A1
Автор: Hernandez Antoine
Принадлежит:

A process for separating a mixture of hydrogen, methane and carbon monoxide by cryogenic distillation. The mixture is cooled in a first heat exchanger and is partially condensed in at least one second heat exchanger which is a bottom reboiler of a first or second column of the column system and at least one portion of the liquid produced by the partial condensation is sent to an intermediate level of the first column. 1. A process for separating a mixture of hydrogen , methane and carbon monoxide by cryogenic distillation in a column system comprising a first column and a second column , comprising:i. cooling the mixture in a first heat exchanger and partially condensing at least one portion thereof in at least one second heat exchanger which is a bottom reboiler of the second column of the column system and at least one portion of the liquid produced by the partial condensation, or a liquid derived therefrom, by at least one step of partial condensation is sent to an intermediate level of the first column, only the at least one portion of the mixture and bottom liquid from the second column exchanging heat in the second heat exchanger, the vaporized bottom liquid being sent back to the column from which it originates,ii. withdrawing a hydrogen-enriched overhead gas from the first column and reheating the hydrogen-enriched overhead gas in the first heat exchanger,iii. withdrawing a liquid enriched in carbon monoxide and in methane from the bottom of the first column and sending it to at least one intermediate level of the second column,iv. withdrawing a methane-rich liquid from the bottom of the second column and withdrawing a fluid rich in carbon monoxide from the top of the second column, andv. producing refrigeration to keep the process cold by means of a refrigeration cycle.2. The process according to claim 1 , in which a portion of the cooled mixture is sent to the second heat exchanger which is a reboiler of the first column.3. The process according to claim 1 ...

Подробнее
Номер записи: 28
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.

Подробнее
Номер записи: 29
10-03-2022 дата публикации

Method of natural gas pretreatment

Номер: US20220074655A1
Автор: Alexander Roesch, Elise Renou, Jasmin JUNGER, Yufeng Qian
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

A method of natural gas treatment including introducing a natural gas containing stream into a dryer unit, thereby producing a treated natural gas containing stream. Introducing the treated natural gas containing stream into a nitrogen rejection unit, thereby producing a further treated natural gas stream as a nitrogen rejection unit product. Splitting the nitrogen rejection unit product into at least two portions, introducing the first portion of the further treated natural gas stream into a reformer unit as first part of feed, and introducing a second portion of the further treated natural gas stream into the dryer unit as a regeneration stream, thereby producing a regeneration waste stream. Introducing at least a portion of the regeneration waste stream into the reformer unit as second part of feed.

Подробнее
Номер записи: 30
04-03-2021 дата публикации

Facility For Producing Gaseous Biomethane By Purifying Biogas From Landfill Combining Membranes, Cryodistillation And Deoxo

Номер: US20210060486A1
Автор: Guenael Prince
Принадлежит: Waga Energy SA

A process and facility for producing gaseous methane by purifying biogas from landfill can include a VOC purification unit, at least one membrane, a CO2 purification unit, a cryodistillation unit comprising a heat exchanger and a distillation column, a deoxo, and a dryer.

Подробнее
Номер записи: 31
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 , ...

Подробнее
Номер записи: 32
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 ...

Подробнее
Номер записи: 33
11-03-2021 дата публикации

SYSTEM AND METHOD OF RECOVERING CARBON DIOXIDE FROM AN EXHAUST GAS STREAM

Номер: US20210069632A1
Автор: DiPietro Joseph Philip, Hofer Douglas Carl
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

A carbon dioxide capture system includes a first heat exchanger configured to exchange heat between an exhaust stream and a lean carbon dioxide effluent stream. The carbon dioxide capture system also includes a first turboexpander including a first compressor driven by a first turbine. The first compressor is coupled in flow communication with the first heat exchanger. The first turbine is coupled in flow communication with the first heat exchanger and configured to expand the lean carbon dioxide effluent stream. The carbon dioxide capture system further includes a carbon dioxide membrane unit coupled in flow communication with the first compressor. The carbon dioxide membrane unit is configured to separate the exhaust stream into the lean carbon dioxide effluent stream and a rich carbon dioxide effluent stream. The carbon dioxide membrane unit is further configured to channel the lean carbon dioxide effluent stream to the first heat exchanger. 1. A carbon dioxide capture system comprising:a first heat exchanger configured to exchange heat between an exhaust stream and a lean carbon dioxide effluent stream; a compressor coupled in flow communication with said first heat exchanger and configured to compress the exhaust stream; and', 'a turbine coupled in flow communication with said first heat exchanger, said compressor driven by said turbine, said turbine configured to expand the lean carbon dioxide effluent stream; and, 'at least one turboexpander comprisinga carbon dioxide membrane unit coupled in flow communication with said compressor, said carbon dioxide membrane unit configured to separate the exhaust stream into the lean carbon dioxide effluent stream and a rich carbon dioxide effluent stream, said carbon dioxide membrane unit further configured to channel the lean carbon dioxide effluent stream to said first heat exchanger.2. The carbon dioxide capture system in accordance with claim 1 , further comprising a cryogenic separation unit coupled in flow ...

Подробнее
Номер записи: 34
27-02-2020 дата публикации

System and Method for Natural Gas Liquid Production with Flexible Ethane Recovery or Rejection

Номер: US20200064063A1
Автор: Butts Rayburn C.
Принадлежит:

A system and method for producing an NGL product stream in either an ethane retention or rejection mode. Rejection modes include (a) two heat exchange stages between a feed stream and first separator bottoms stream and cooling a side stream withdrawn from a fractionation tower through heat exchange with both the fractionation tower and second separator overhead streams; or (b) warming the first separator bottoms stream and fractionation overhead stream through heat exchange with the side stream prior to heat exchange with the feed stream, to achieve 4-15% ethane recovery and 97%+ propane recovery. In ethane retention mode, a portion of the feed stream and portions of a first separator overhead and bottoms streams are separately cooled through heat exchange with other process streams, including the entireties of a recycled residue gas and fractionation column overhead streams, resulting in around 99% ethane and around 100% propane recovery. 1. A system for processing a feed stream comprising methane , ethane , propane , and other components in an ethane rejection mode to produce an NGL product stream and a residue gas stream , system comprising:a first separator wherein the feed stream is separated into a first overhead stream and a first bottoms stream;a fractionation column wherein one or more fractionating column feed streams are separated into a second overhead stream and a second bottoms stream;a first heat exchanger and a second heat exchanger, wherein (1) at least a first portion of the feed stream is cooled in the first heat exchanger upstream of the first separator through heat exchange with (a) the first bottoms stream downstream from the second heat exchanger, (b) the second overhead stream downstream from the second heat exchanger, (c) a third overhead stream downstream from the second heat exchanger, and (d) a first side stream withdrawn from a mid-portion of the fractionation column and (2) the second overhead stream is warmed in the second heat ...

Подробнее
Номер записи: 35
18-03-2021 дата публикации

METHOD AND APPARATUS FOR THE CRYOGENIC SEPARATION OF A SYNTHESIS GAS CONTAINING A NITROGEN SEPARATION STEP

Номер: US20210080175A1
Автор: Hernandez Antoine
Принадлежит:

A method for separating a gas mixture comprising carbon monoxide, nitrogen and hydrogen involves sending a hydrogen-depleted fluid to a denitrification column (K) having a top condenser (C) and a bottom reboiler (R) in order to produce a nitrogen-enriched gas at the top of the column and a nitrogen-depleted liquid at the bottom of the column, cooling the condenser of the denitrification column by means of a nitrogen cycle using a nitrogen compressor (V, V, V), vaporising, in the heat exchanger of the condenser, the liquid nitrogen () from the nitrogen cycle, and returning the nitrogen () vaporised in the heat exchanger to the nitrogen compressor. 113.-. (canceled)14. A process for separating a gas mixture comprising carbon monoxide , nitrogen , hydrogen , and methane , the method comprising:i) cooling the gas mixture in a heat exchanger,ii) separating the gas mixture cooled in the heat exchanger by at least one scrubbing and/or distillation and/or partial condensation step, to form a hydrogen-depleted fluid containing carbon monoxide and nitrogen,iii) introducing the hydrogen-depleted fluid into a denitrification column comprising a column top, a top condenser, a column bottom, and a bottom reboiler, thereby producing a nitrogen-enriched gas at the column top and a nitrogen-depleted liquid at the column bottom,iv) cooling the top condenser by means of a nitrogen cycle using a nitrogen compressor comprising at least a first stage and a second stage, the first stage comprising a first entry pressure and the second stage comprising a second entry pressure, the first entry pressure being lower than that of the second entry pressure,v) expanding the nitrogen-depleted liquid and sending the expanded nitrogen-depleted liquid to the top condenser wherein it is at least partially vaporized by heat exchange in the condenser with the nitrogen-enriched gas, thereby condensing the expanded nitrogen-depleted liquid, a) sending the bottom liquid from the denitrification column to ...

Подробнее
Номер записи: 36
23-03-2017 дата публикации

TREATMENT METHOD FOR SEPARATING CARBON DIOXIDE AND HYDROGEN FROM A MIXTURE

Номер: US20170081186A1
Автор: CHAMBRON Nicolas, Dubettier-Grenier Richard, LECLERC Mathieu, MARTY Pascal
Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

The invention relates to a method fro treating a mixture in order to separate carbon dioxide and hydrogen from said mixture, in which: i) the mixture is cooled and partially condensed and a first liquid is separated from the rest of the mixture in a first phase separator; ii) a gas from or derived from a gas from the first phase separator is treated in a hydrogen pressure swing adsorption module in order to produce a hydrogen-rich gas and a hydrogen-depleted residual gas; and iii) said hydrogen-depleted residual gas or a gas derived from said depleted gas is cooled and partially condensed and a second liquid is separated from the remaining gas in a second phase separator, separate from the first phase separator, wherein the first and/or second liquid being rich in carbon dioxide. The invention also relates to an installation for implementing such a method. 115-. (canceled)16. A process for treating a mixture for the purpose of separating carbon dioxide and hydrogen from this mixture , the process comprising the steps of:i) cooling and partially condensing the mixture is cooled and then separating a first liquid from the mixture in a first phase separator;ii) treating a gas originating or derived from a top gas from the first phase separator in a pressure swing adsorption module for hydrogen to produce a hydrogen-rich gas and a hydrogen- depleted residual gas; andiii) cooling and partially condensing said hydrogen-depleted residual gas or a gas derived from said hydrogen-depleted gas and then separating a second liquid the remaining gas in a second phase separator that is different from the first phase separator,wherein the first liquid and/or second liquid or a liquid derived from the first liquid and/or second liquid originating from the first phase separator and/or from the second phase separator are rich in carbon dioxide as compared to the mixture,wherein the partial condensations in steps i) and iii) are performed in the same cryogenic unit.17. The process as ...

Подробнее
Номер записи: 37
23-03-2017 дата публикации

Heating Component to Reduce Solidification in a Cryogenic Distillation System

Номер: US20170082357A1
Автор: KELMAN Scott D., KIMBLE E. Lawrence, Smith Ransdall K., Valencia Jaime A.
Принадлежит:

A method and a system for feeding a feed gas including methane (CH) and carbon dioxide (CO) to a cryogenic distillation column are provided herein. The method includes flowing a freeze zone COvapor stream into a freezing section of the column to produce an overhead stream that exits the column. The method includes heating the overhead stream via a heating component to reduce or prevent solidification of the COin the overhead stream. 1. A method comprising:{'sub': 4', '2, 'feeding a feed gas comprising methane (CH) and carbon dioxide (CO) to a cryogenic distillation column during start-up of the cryogenic distillation column;'}producing an acid gas rich bottom stream and a freeze zone vapor stream;flowing the freeze zone vapor stream into a freezing section of the cryogenic distillation column, wherein the freeze zone vapor stream exits the cryogenic distillation column as an overhead stream;{'sub': '2', 'heating the overhead stream via a heating component to form a heated overhead stream to reduce or prevent solidification of the COin the overhead stream;'}flowing the heated overhead stream into a heat exchanger to substantially reduce or prevent solidification in the heat exchanger;compressing the heated overhead stream via an overhead compressor to produce a high-pressure vapor; andreducing pressure of the high-pressure vapor to produce a liquid-vapor stream at an inlet of the cryogenic distillation column, wherein the liquid-vapor stream is introduced into the cryogenic distillation column as a refluxing spray.2. The method of claim 1 , wherein the heating of the overhead stream comprises raising a temperature of the overhead stream by about 0.5° F. to about 10° F.3. The method of claim 1 , comprising measuring a temperature of the heated overhead stream at an inlet of the heat exchanger.4. The method of claim 1 , comprising regulating an amount of heat emitted by the heating component via a control system claim 1 , wherein the control system maintains a ...

Подробнее
Номер записи: 38
23-03-2017 дата публикации

PROCESS AND PLANT FOR SEPARATING A GAS MIXTURE

Номер: US20170082358A1
Автор: Klein Bernd
Принадлежит:

A process and plant are proposed for separating a feed mixture predominantly or exclusively containing carbon monoxide and hydrogen, in which the feed mixture is subjected to a cryogenic separation process in which a carbon monoxide-rich liquid and at least one residual gas mixture which is depleted in carbon monoxide and enriched in hydrogen, in comparison with the feed mixture, are formed. It is intended that the at least one residual gas mixture is subjected to a membrane separation process in which at least one hydrogen-rich permeate and at least one carbon monoxide-rich retentate are formed, wherein the or at least one of the carbon monoxide-rich retentates is recirculated to the cryogenic separation process. 1. A process for separating a feed mixture predominantly or exclusively containing carbon monoxide and hydrogen , in which the feed mixture is subjected to a cryogenic separation process in which a carbon monoxide-rich liquid and at least one residual gas mixture which is depleted in carbon monoxide and enriched in hydrogen , in comparison with the feed mixture , are formed , characterized in that the at least one residual gas mixture is subjected to a membrane separation process in which at least one hydrogen-rich permeate and at least one carbon monoxide-rich retentate are formed , wherein the or at least one of the carbon monoxide-rich retentates is recirculated to the cryogenic separation process.2. The process according to claim 1 , in which the membrane separation process comprises a first membrane separation step and a second membrane separation step claim 1 , wherein claim 1 , in the first membrane separation step claim 1 , a first hydrogen-rich permeate and a first carbon monoxide-rich retentate are formed claim 1 , and in the second membrane separation step claim 1 , a second hydrogen-rich permeate and a second carbon monoxide-rich retentate are formed.3. The process according to claim 2 , in which the first hydrogen-rich permeate is transferred ...

Подробнее
Номер записи: 39
26-03-2020 дата публикации

PROCESS FOR PRODUCING BIOMETHANE FROM A BIOGAS STREAM, COMPRISING SOLIDIFICATION OF THE IMPURITIES

Номер: US20200096254A1
Автор: CARDON Guillaume, TRUEBA Antonio, Valentin Solène
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Process for producing biomethane from a biogas stream including methane, carbon dioxide and at least one impurity chosen from ammonia, volatile organic compounds, water, sulfur-based impurities (HS) and siloxanes. A biogas stream is dried, the at least one impurity is at least partially removed by solidification and removal of the impurity. The methane and the carbon dioxide contained in the biogas obtained from the second step are separated so as to produce a biomethane stream and a COstream. 1. A process for producing biomethane from a biogas stream comprising methane , carbon dioxide and at least one impurity chosen from ammonia , volatile organic compounds , water , sulfur-based impurities (HS) and siloxanes , said process comprising the steps of:drying the biogas stream;at least partially removing said at least one impurity contained in the dried biogas stream by solidification and removal of the solidified at least one impurity to yield at least partially purified biogas; and{'sub': '2', 'separating the methane and the carbon dioxide contained in the at least partially purified biogas so as to produce a biomethane stream and a COstream.'}2. The process of claim 1 , wherein the second step of at least partially removing said at least one of the at least one impurity comprises:compressing the dried biogas stream to a pressure of greater than 5 bar, preferably 10 bar;cooling the compressed biogas stream to a temperature below −70° C., thereby solidifying said at least one impurity resulting in deposition of the solidified at least one impurity; andremoval of said solidified at least one impurity from the cooled compressed biogas stream.3. The process of claim 2 , wherein the compressed biogas stream is cooled with a cooling stream of COproduced during said step of separating.4. The process of claim 2 , wherein in said step of cooling claim 2 , said at least one impurity is removed by sublimation of said at least one impurity and by flushing with a gaseous ...

Подробнее
Номер записи: 40
19-04-2018 дата публикации

HEAT EXCHANGERS FOR LOW TEMPERATURE CARBON DIOXIDE SEPARATION FROM NATURAL GAS

Номер: US20180106535A1
Автор: Godry Thomas J., Xu Zhanping, Zhou Lubo
Принадлежит:

A reboiler in fluid communication with a fractionator column in an offshore low temperature process removing carbon dioxide from natural gas has a vessel volume. A carbon steel tubing bundle is disposed within the vessel volume. Each tube in the bundle has an outer surface with a porous granular metal layer deposited thereon. The granular metal layer comprises a pore size distribution which promotes bubble nucleation during vaporization of a nearly pure liquid carbon dioxide stream. 1. A reboiler in fluid communication with a fractionator column in an offshore low temperature system removing carbon dioxide from natural gas , the bottom reboiler comprising:a rigid vessel having an outer shell defining a vessel volume, the rigid vessel having an inlet in fluid communication with a fractionator for receiving a liquid stream therefrom and an outlet for returning a vapor to the fractionator; anda carbon steel tubing bundle disposed within the vessel volume each tube in the carbon steel tubing bundle having an outer surface and an inner surface, the outer surface having a granular metal layer deposited thereon, and the inner surface being generally smooth relative thereto, wherein the granular metal layer comprises a pore size distribution adapted to promote and increase bubble nucleation during vaporization of a nearly pure liquid carbon dioxide stream on the outer surfaces of the tubes.2. The reboiler of wherein the granular metal layer is metallurgically bonded to each tube in the carbon steel tubing bundle.3. The reboiler of wherein the shell is produced from a carbon steel.4. The reboiler of wherein a weight of the reboiler is less than 27 claim 1 ,000 kg.5. The reboiler of wherein a weight of the reboiler is less than 22 claim 1 ,000 kg.6. The reboiler of wherein the outer surface having the granular metal layer deposited thereon increases an overall heat transfer coefficient of each tube in the carbon steel tubing bundle by at least 1.3 times that of a bare outer ...

Подробнее
Номер записи: 41
30-04-2015 дата публикации

Process And Apparatus For The Separation By Cryogenic Distillation Of A Mixture Of Methane, Carbon Dioxide And Hydrogen

Номер: US20150114035A1
Автор: Alain Briglia, Bhadri Prasad, Emmanuelle BROCHERIOU, Pascal Marty
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

In a process for the cryogenic separation of a feed mixture of at least carbon monoxide, hydrogen and methane, the feed mixture is separated in a methane wash column fed by a liquid methane stream at the top of the methane wash column to produce a gas enriched in hydrogen, a liquid stream from the bottom of the methane wash column is treated to produce a mixture of carbon monoxide and methane, the mixture of carbon monoxide and methane is separated in a separation column to produce a gas enriched in carbon monoxide and a liquid methane flow at least part of which forms a purge stream, the purge stream being varied to take account of load variations.

Подробнее
Номер записи: 42
25-04-2019 дата публикации

Apparatus and method for separating co2 at low temperature comprising a step of separation by permeation

Номер: US20190118134A1
Автор: Frederick Lockwood, Ludovic Granados, Mathieu LECLERC, Paul TERRIEN
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

In a method for separating a mixture containing carbon dioxide, the mixture is cooled in a heat exchanger and partially condensed and a first liquid is separated from the mixture in a first system operating at low temperature comprising at least one first phase separator and a gas from the first system is treated in a membrane system to produce a permeate and a non-permeate, the gas from the first system being divided into two portions, a first portion being sent to the membrane system without being heated and a second portion being heated to at least an intermediate temperature of the heat exchanger and then sent to the membrane system without being cooled.

Подробнее
Номер записи: 43
04-05-2017 дата публикации

PROCESS AND APPARATUS FOR SWEETENING AND LIQUEFYING A GAS STREAM

Номер: US20170122659A1
Автор: GNANENDRAN Nimalan, WILKES Martin
Принадлежит:

A process and apparatus for liquefying a gas stream comprising hydrocarbons and sour species is provided in which the sour species are removed in liquefied form as the sweetened gas stream is progressively cooled to liquefaction temperatures. The process involves cooling the gas stream in a manner to produce a cooled gas stream comprising gaseous hydrocarbons and residual sour species. The cooled gas stream is then treated with a cold solvent to deplete the cooled gas stream of residual sour species. The resulting cooled sweetened gas stream is then further cooled to produce liquid hydrocarbons. 1. A process for liquefying a gas stream comprising hydrocarbons and sour species , the process comprising the steps of:a) cooling the gas stream by heat exchange with a first refrigerant stream to a temperature marginally greater than at which solidification of the sour species occurs;b) further cooling the gas stream to a first temperature between about −80° C. to −95° C. at a pressure between about 15 to 25 bar by expanding the gas stream as it is introduced into a vessel to produce a mixture of solid and/or liquid sour species and a cooled gas stream comprising gaseous hydrocarbons and residual sour species;c) separating the solid and/or liquid sour species from the cooled gas stream in the vessel;d) contacting the cooled gas stream with a solvent under temperature conditions close to or at the first temperature to deplete the cooled gas stream of residual sour species, thereby producing a cooled sweetened gas stream; ande) cooling the cooled sweetened gas stream to a second temperature below the methane boiling point by heat exchange with a second refrigerant stream to produce liquid hydrocarbons.2. The process according to claim 1 , wherein the first temperature is at or just below the temperature at which the sour species solidifies and/or condenses.3. The process according to claim 1 , wherein the first temperature is a temperature at which freezable hydrocarbon ...

Подробнее
Номер записи: 44
12-05-2016 дата публикации

METHOD AND APPARATUS FOR PRODUCING CARBON DIOXIDE AND HYDROGEN

Номер: US20160131423A1
Автор: CHAMBRON Nicolas, Dubettier-Grenier Richard, Gerard Sylvain
Принадлежит:

In a process for the production of carbon dioxide and hydrogen from a gas flow comprising at least hydrogen, at least one sulfur-comprising component and carbon dioxide originating from a Claus unit fed with a gas comprising at least 50 mol % of oxygen, the gas flow is compressed and dried in order to produce a compressed and dried gas flow and the compressed and dried gas flow is separated at a subambient temperature in order to produce at least a fluid enriched in carbon dioxide with respect to the compressed and dried gas flow and at least a fluid enriched in hydrogen with respect to the compressed and dried gas flow. 115-. (canceled)16. A process for the production of carbon dioxide and hydrogen from a gas flow comprising at least hydrogen , at least one sulfur-comprising component and carbon dioxide originating from a Claus unit (C) in which hydrogen sulfide (HS) is partially converted into sulfur , the Claus unit being fed with a gas comprising at least 50 mol % of oxygen and produces a gas flow , in which the process further comprises the steps of:a) compressing and drying the gas flow is compressed and dried in order to produce a compressed and dried gas flow; andb) separating the compressed and dried gas flow by distillation and/or by at least one stage of partial condensation at a subambient temperature, in order to produce at least a fluid enriched in carbon dioxide with respect to the compressed and dried gas flow and at least a fluid enriched in hydrogen with respect to the compressed and dried gas flow.17. The process as claimed in claim 16 , wherein the fluid enriched in hydrogen is a gas and this gas or a gas derived from this gas is separated by adsorption in order to produce a flow rich in hydrogen comprising at least 60 mol % of hydrogen and a flow depleted in hydrogen.18. The process as claimed in claim 17 , wherein the flow depleted in hydrogen comprises carbon dioxide and is treated by separation at subambient temperature in order to produce a ...

Подробнее
Номер записи: 45
02-05-2019 дата публикации

PROCESS AND PLANT FOR THE COMBINATION PRODUCTION OF A MIXTURE OF HYDROGEN AND NITROGEN AND ALSO OF CARBON MONOXIDE BY CRYOGENIC DISTILLATION AND CRYOGENIC SCRUBBING

Номер: US20190128601A1
Автор: Demolliens Bertrand
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Process for the combined production of a mixture of hydrogen and nitrogen, and of carbon monoxide by cryogenic distillation and cryogenic scrubbing, wherein a methane-rich liquid is introduced at a first intermediate level of a scrubbing column as first scrubbing liquid and at least one nitrogen-rich liquid is introduced at a level higher than the first level of the scrubbing column as second scrubbing liquid and a mixture of hydrogen and nitrogen is drawn off as overhead gas from the scrubbing column. 110-. (canceled)11. A process for the combined production of a mixture of hydrogen and nitrogen , of carbon monoxide by cryogenic distillation and cryogenic scrubbing , wherein the process comprises the steps of:i) cooling, in a heat exchanger, a gas mixture containing at least hydrogen, carbon monoxide and methane;ii) sending the cooled mixture to a scrubbing column;iii) introducing a methane-rich liquid at a first intermediate level of the scrubbing column as a first scrubbing liquid;iv) introducing at least one nitrogen-rich liquid at a level higher than the first level of the scrubbing column as a second scrubbing liquid;v) withdrawing a mixture of hydrogen and nitrogen as an overhead gas from the scrubbing column;vi) withdrawing a first bottoms liquid from the scrubbing column and then sending said first bottoms liquid to a stripping column;vii) withdrawing a liquid that is level with an intermediate section of the scrubbing column and sending said liquid either to the heat exchanger, or to a stripping column overhead gas line, or to a second stripping column;viii) withdrawing a second bottoms liquid from the stripping column and then sending to a column configured to separate carbon monoxide and methane; andix) withdrawing a fluid rich in carbon monoxide from the separating column;x) withdrawing a third bottoms liquid from the separating column, wherein at least one portion of the third bottoms liquid from the separating column constitutes the methane-rich ...

Подробнее
Номер записи: 46
19-05-2016 дата публикации

Liquid Collection System

Номер: US20160138864A1
Автор: Edward J. Grave, Nicholas F. Urbanski
Принадлежит: Individual

An apparatus is disclosed for maintaining constant fluid pressure and equalized fluid flow among a plurality of downcomer lines through which liquid from a tower is directed. A substantially annular fluid distribution belt is disposed at the circumference of the tower. The fluid distribution belt collects liquid from the tower. At least two outlets direct liquid from the fluid distribution belt out of the tower and into a corresponding number of downcomer lines disposed external to the tower.

Подробнее
Номер записи: 47
09-05-2019 дата публикации

SYSTEMS AND METHODS FOR PRODUCTION AND SEPARATION OF HYDROGEN AND CARBON DIOXIDE

Номер: US20190135626A1
Автор: Allam Rodney John, Rafati Mohammad
Принадлежит:

The present disclosure relates to systems and methods useful for providing one or more chemical compounds in a substantially pure form. In particular, the systems and methods can be configured for separation of carbon dioxide from a process stream, such as a process stream in a hydrogen production system. As such, the present disclosure can provide systems and method for production of hydrogen and/or carbon dioxide. 1. A process for separating carbon dioxide (CO) from a process stream comprising COand one or more further components , the process comprising:{'sub': '2', 'providing the process stream at a pressure such that a partial pressure of the COin the process stream is at least 15 bar;'}{'sub': '2', 'drying the process stream sufficiently so that a dew point of the process stream comprising the COis reduced to a temperature of about −20° C. or less;'}{'sub': '2', 'cooling the process stream in at least one heat exchanger to provide the process stream comprising the COas a two phase stream;'}expanding the two phase stream so as to reduce the temperature of the two phase stream to a temperature that is within about 15° C. of a freezing point of the two phase stream; and{'sub': '2', 'separating the two phase stream to provide a vapor stream enriched with at least one of the one or more further components and to provide a liquid stream that is enriched with the CO.'}2. The process of claim 1 , wherein the drying comprises passage of the process stream comprising the COthrough a desiccant-packed bed.3. The process of claim 1 , wherein the cooling comprises cooling the process stream against at least a portion of the liquid stream that is enriched with the CO.4. The process of claim 3 , wherein the cooling comprises cooling the process stream in a first heat exchanger and in a second heat exchanger.5. The process of claim 4 , wherein the cooling comprises cooling the process stream in the first heat exchanger against a first portion of the liquid stream that is ...

Подробнее
Номер записи: 48
10-06-2021 дата публикации

CRYOGENIC PROCESS FOR REMOVING NITROGEN FROM A DISCHARGE GAS

Номер: US20210172677A1
Автор: ANDRICH Marine, CHANTANT Nicolas, Terrien Paul
Принадлежит:

A process for producing biomethane by scrubbing a biogas feed stream including introducing a feed gas stream into a pretreatment unit wherein the gas stream is partially separated from a COstream and an oxygen stream, thereby producing a CO-depleted gas stream, which is compressed, thereby producing a pressurized CO-depleted gas stream; separating the pressurized CO-depleted gas stream by cryogenic separation by introducing the pressurized CO-depleted gas stream into a distillation column thereby producing a nitrogen stream and a CH-enriched stream, recovering a pressurized CH-enriched stream by pumping the CH-enriched stream; wherein the separation of the COstream and the oxygen stream from the feed gas stream is performed by a unit comprising at least two separating membrane stages in order that the CO-depleted gas stream comprises between 0.3 mol % and 2 mol % of CO. 18.-. (canceled)10. The process of claim 9 , further comprising scrubbing water from the pressurized CO-depleted gas stream.11. The process of claim 9 , wherein P1 is greater than 50 bar absolute.12. The process of claim 9 , wherein the pressure P2 is greater than 40 bar abs.13. The process of claim 9 , wherein the CO-depleted gas stream undergoes an expansion to a pressure P3 of between 15 bar abs and 40 bar abs prior to being introduced into said distillation column.14. The process of claim 13 , wherein prior to the expansion claim 13 , the CO-depleted gas stream is at least partially condensed in a heat exchanger.15. The process of claim 14 , wherein the CO-depleted gas stream is at least partially condensed in a heat exchanger counter-currentwise relative to the CH-enriched stream and to at least part of the nitrogen stream. This application is a 371 of International Application No. PCT/FR2018/053338, filed Dec. 17, 2018, which claims priority to French Patent Application No. 1762858, filed Dec. 21, 2017, the entire contents of which are incorporated herein by reference.The invention relates to a ...

Подробнее
Номер записи: 49
10-06-2021 дата публикации

METHOD FOR GENERATING REFRIGERATION FOR A CARBON MONOXIDE COLD BOX

Номер: US20210172678A1
Автор: Warta Andrew M.
Принадлежит:

The present invention is directed to a method of separating carbon monoxide from syngas mixtures by cryogenic means where a partial condensation cycle is generally employed, and more specifically varying refrigeration generation based on income feed composition of the hydrocarbon feedstock being processed. 1. A method for the separation of carbon monoxide from a syngas feedstock in a carbon monoxide cold box where the cold box is provided refrigeration based on the composition of the incoming feedstock , comprising:cooling and partially condensing the syngas cold box feed stream 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 into a first hydrogen rich vapor stream and a first carbon monoxide rich liquid stream in a first separator;feeding the first carbon monoxide rich liquid stream to a second hydrogen removal separator operating at a pressure lower than the first separator, wherein a second hydrogen rich vapor stream is separated from a second crude carbon monoxide rich liquid stream;splitting said second crude carbon monoxide rich liquid stream into two portions wherein a first portion of the second crude carbon monoxide liquid rich stream is at least partially vaporized in the primary heat exchanger and providing a second portion of the second crude carbon monoxide rich liquid stream wherein both portions are introduced into a distillation column for separating purified carbon monoxide product stream from a liquid byproduct stream;providing a turbine feed stream to a turbine disposed within said cold box; andproviding a cryogenic fluid feed to said cold box and varying the flow rate based on the composition of the incoming feedstock.2. The method of claim 1 , further comprising: operating the cold box in a first mode when the methane content of the cold box feed is less than or equal to about 3.6 percent methane ...

Подробнее
Номер записи: 50
02-06-2016 дата публикации

Cryogenic Separation of Synthesis Gas

Номер: US20160153710A1
Автор: McNeil Brian Alfred, Weaver Andrew, Winter David Graham
Принадлежит: AIR PRODUCTS AND CHEMICALS, INC.

A process and apparatus for separating a feed containing hydrogen, carbon monoxide, methane, and optionally nitrogen to form a product gas having a desired H:CO molar ratio and optionally a hydrogen product gas and a carbon monoxide product gas. The feed is partially condensed to form a hydrogen-enriched vapor fraction and a carbon monoxide-enriched liquid fraction. The hydrogen-enriched vapor fraction and carbon monoxide-enriched liquid fraction are combined in a regulated manner to form an admixture, which is cryogenically separated to form the product mixture having the desired H:CO molar ratio. 1. A process for separating a feed comprising hydrogen , carbon monoxide , methane , and optionally nitrogen , comprising:partially condensing the feed to provide a hydrogen-enriched vapor fraction and a carbon monoxide-enriched liquid fraction;combining at least a portion of the carbon monoxide-enriched liquid fraction with a regulated portion of the hydrogen-enriched vapor fraction to form a two-phase admixture having a vapor fraction and a liquid fraction;cryogenically separating at least a portion of the two-phase admixture in a first fractionator to form a methane-depleted vapor fraction and a hydrogen-depleted liquid fraction;{'sub': '2', 'partially condensing the methane-depleted vapor fraction to form a first product gas and a condensate, wherein the first product gas has a H:CO molar ratio between 0.5:1 and 2.5:1; and'}introducing at least a portion of the condensate into the first fractionator as reflux;wherein at least one of the liquid fraction of the two-phase admixture and the at least a portion of the carbon monoxide-enriched liquid fraction are partially vaporized.2. (canceled)3. The process of wherein the first product gas is withdrawn from the first fractionator at a pressure of 15 to 40 bar.4. The process of wherein the first product gas H:CO molar ratio is between 0.9:1 and 1.5:1.5. The process of further comprising:scrubbing a second portion of the ...

Подробнее
Номер записи: 51
17-06-2021 дата публикации

Ready-mix concrete production utilizing carbon capture and related systems

Номер: US20210179491A1
Автор: Rene E. Peinado, Zachary Charles Grasley
Принадлежит: MEEDL68 LP

An illustrative method for CO2 sequestration may include the step of sequestering at least a portion of a CO2 gas emitted during operation of the ready-mix concrete production system in (i) a ready-mix concrete produced by the read-mix concrete production system, and/or (ii) calcium carbonate formed by processing water used during operation of the ready-mix concrete production and delivery system.

Подробнее
Номер записи: 52
07-05-2020 дата публикации

Carbon Dioxide Recycle Stream Processing in an Enhanced Oil Recovery Process

Номер: US20200141638A1
Автор: Prim Eric
Принадлежит:

A method for recovering natural gas liquids from a recycle stream having natural gas liquids includes receiving a carbon dioxide recycle stream that comprises carbon dioxide, natural gas, and the natural gas liquids. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide and the natural gas, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a system comprises piping and a separator. The piping is configured to receive a recycle stream, and the separator is coupled to the piping and is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. 1. A set of process equipment for use in an enhanced oil recovery (EOR) process , the set of process equipment comprising:{'sub': 1', '8, 'a heat exchanger configured to receive a carbon dioxide recycle stream and cool the carbon dioxide recycle stream to produce a cooled carbon dioxide recycle stream, wherein the cooled carbon dioxide recycle stream comprises carbon dioxide, C-Chydrocarbons, and is substantially free of water;'}a multi-stage column configured to receive the cooled carbon dioxide recycle stream and produce a top effluent stream and a bottom effluent stream;{'sub': 1', '4, 'a single stage separator configured to receive the top effluent stream and produce a vapor stream and a liquid stream, wherein the vapor stream is transferred to the heat exchanger to produce a heated vapor stream, wherein the heated vapor stream comprises carbon dioxide and C-Chydrocarbons; and'}{'sub': 3', '8, 'an expander configured to receive the bottom effluent stream and produce an expanded bottom effluent stream, wherein the expanded bottom effluent stream comprises C-Chydrocarbons.'}2. The set of process equipment of claim 1 , further comprising a molecular sieve dehydrator configured to receive a feed ...

Подробнее
Номер записи: 53
11-06-2015 дата публикации

Method and system of dehydrating a feed stream processed in a distillation tower

Номер: US20150159940A1
Автор: Jaime A. Valencia, Paul Scott Northrop
Принадлежит: Individual

The present disclosure provides a method of dehydrating a feed stream processed in a distillation tower. The method may include (a) introducing a feed stream comprising a first contaminant stream into a distillation tower; (b) forming a solid from the feed stream in a controlled freeze zone section of the distillation tower; (c) feeding a second contaminant stream into the feed stream outside the distillation tower; and (d) removing water from the feed stream with a second contaminant stream by feeding the second contaminant stream.

Подробнее
Номер записи: 54
11-06-2015 дата публикации

METHOD AND DEVICE FOR SEPARATING HYDROCARBONS AND CONTAMINANTS WITH A SPRAY ASSEMBLY

Номер: US20150159943A1
Автор: Maher David W., Valencia Jaime A.
Принадлежит:

A method for separating a feed stream in a distillation tower comprising maintaining a controlled freeze zone (CFZ) section in the distillation tower, receiving a freezing zone liquid stream in a spray nozzle assembly in the CFZ section, wherein the spray nozzle assembly comprises a plurality of outer spray nozzles on an outer periphery of the spray nozzle assembly and at least one inner spray nozzle interior to the outer spray nozzles, wherein each outer spray nozzle is configured to spray the freezing zone liquid stream along a central spray axis, and wherein the central spray axis of at least one of the outer spray nozzles is not parallel to a CFZ wall, and spraying the freezing zone liquid stream through the spray nozzle assembly into the CFZ section to keep a temperature and pressure at which the solid and the hydrocarbon-enriched vapor stream form. 1. A method for separating a feed stream in a distillation tower comprising:maintaining a controlled freeze zone section in the distillation tower;receiving a freezing zone liquid stream in a spray nozzle assembly in the controlled freeze zone section, wherein the spray nozzle assembly comprises a plurality of outer spray nozzles on an outer periphery of the spray nozzle assembly and at least one inner spray nozzle interior to the plurality of outer spray nozzles, wherein each outer spray nozzle is configured to spray the freezing zone liquid stream along a central spray axis, and wherein the central spray axis of at least one of the plurality of outer spray nozzles is not parallel to a controlled freeze zone wall; andspraying the freezing zone liquid stream through the spray nozzle assembly into the controlled freeze zone section to keep the controlled freeze zone section at a temperature and pressure at which the solid and the hydrocarbon-enriched vapor stream form.2. The method of claim 1 , wherein an angle of the central spray axis of at least one of the plurality of outer spray nozzles is achieved by angling ...

Подробнее
Номер записи: 55
23-05-2019 дата публикации

Carbon dioxide capturing apparatus using cold heat of liquefied natural gas and power generation system using same

Номер: US20190151789A1
Автор: Hwachang SUNG, Songhun CHA
Принадлежит: Doosan Heavy Industries and Construction Co Ltd

A carbon dioxide capturing apparatus using cold heat of liquefied natural gas (LNG) includes a heat exchanger to cool primary coolant using heat exchange between the primary coolant and the LNG; a chiller connected to the heat exchanger and configured to discharge capturing coolant colder than the primary coolant by performing a heat exchange between the capturing coolant and a cooling material; and a capturing cooler configured to capture carbon dioxide contained in flue gas by performing a heat exchange between the capturing coolant discharged from the chiller and the flue gas. A power generation system includes an LNG storage facility; a power generation facility discharging flue gas; a unit for heat exchange between the LNG and a coolant to regasify the LNG and cool the coolant; and a unit for capturing carbon dioxide contained in the flue gas by heat exchange between the discharged flue gas and the coolant.

Подробнее
Номер записи: 56
22-09-2022 дата публикации

Production of Acetic Acid through Cryogenic Separation of Syngas

Номер: US20220298095A1
Автор: Ali Shakir Al Hunaidy, Hasan Imran, Hyungmuk Lim, Jay H. Lee, Kosan Roh
Принадлежит: Korea Advanced Institute of Science and Technology KAIST, Saudi Arabian Oil Co

A system and method for producing acetic acid, including dry reforming methane with carbon dioxide to give syngas, cryogenically separating carbon monoxide from the syngas giving a first stream including primarily carbon monoxide and a second stream including carbon monoxide and hydrogen. The method includes synthesizing methanol from the second stream via hydrogenation of carbon monoxide in the second stream, synthesizing dimethyl ether from the methanol, and generating acetic acid from the dimethyl ether and first-stream carbon monoxide.

Подробнее
Номер записи: 57
23-05-2019 дата публикации

METHOD FOR SEPARATING A SYNTHESIS GAS

Номер: US20190154332A1
Автор: Demolliens Bertrand, Hernandez Antoine, Tsevery Jean-Marc
Принадлежит:

A method for separating a synthesis gas containing carbon monoxide and hydrogen including compressing a flow of synthesis gas received from a source of synthesis gas in a compressor, purifying the compressed synthesis gas in a purification unit to purify it of water and/or carbon dioxide, cooling the compressed and purified flow of synthesis gas, separating the cooled flow of synthesis gas by washing and/or distillation at a cryogenic temperature and optionally by adsorption in a separating unit, and producing at least the following three gases in the separating unit: a carbon monoxide-enriched gas, a hydrogen-enriched gas, a residual gas containing carbon monoxide and hydrogen that is less pure with respect to carbon monoxide than the carbon monoxide-enriched gas and less pure with respect to hydrogen than the hydrogen-enriched gas. 115.-. (canceled)16. A method for separating a synthesis gas containing carbon monoxide and hydrogen comprising:i) compressing a flow of synthesis gas received from a source of synthesis gas in a compressor,ii) purifying the compressed synthesis gas in a purification unit to purify it of water and/or carbon dioxide,iii) cooling the compressed and purified flow of synthesis gas,iv) separating the cooled flow of synthesis gas by washing and/or distillation at a cryogenic temperature and optionally by adsorption in a separating unit, andv) producing at least the following three gases in the separating unit: a carbon monoxide-enriched gas, a hydrogen-enriched gas, a residual gas containing carbon monoxide and hydrogen that is less pure with respect to carbon monoxide than the carbon monoxide-enriched gas and less pure with respect to hydrogen than the hydrogen-enriched gas and optionally also a methane-enriched gas, and/or a nitrogen-enriched gas, andvi) sending at least one part of each of the following gases downstream of the source, only if the flow of synthesis gas received from the source and sent to the compressor is below a threshold ...

Подробнее
Номер записи: 58
21-05-2020 дата публикации

Method for Using a Solid-Tolerant Heat Exchanger in Cryogenic Gas Treatment Processes

Номер: US20200158426A1
Автор: Kaminsky Robert D., Staedter Marcel
Принадлежит:

Methods and systems for removing contaminants, such as water and/or carbon dioxide, from a gas stream, such as a natural gas stream or a flue gas stream. One or more solid-tolerant heat exchangers are employed to chill the gas stream to a temperature at which the contaminants solidify. The solidified contaminants may then be separated and removed from the gas stream. In one or more aspects, the one or more solid-tolerant heat exchangers may include a scraped heat exchanger. 1. A method for removing water and carbon dioxide from a feed gas stream containing water and carbon dioxide , the method comprising: i) below which at least a portion of the water contained in the feed gas stream freezes out of the feed gas stream, and', 'ii) above which at least a portion of the carbon dioxide contained in the feed gas freezes out of the feed gas as a pure phase; and, 'producing a first treated gas stream by feeding the feed gas stream to a first solid-tolerant heat exchanger, the first solid-tolerant heat exchanger chilling the feed gas stream to a first temperature, wherein the first temperature is'}producing a second treated gas stream by feeding the first treated gas stream to a second solid-tolerant heat exchanger, the second solid-tolerant heat exchanger chilling the first treated gas stream to a second temperature, wherein the second temperature is below which at least a portion of the carbon dioxide contained in the feed gas stream freezes out of the first treated gas stream as a pure phase.2. The method of claim 1 , further comprising:further chilling the second treated gas stream to at least partially liquefy the second treated gas stream.3. The method of claim 1 , wherein the second treated gas stream comprises primarily methane on a molar basis.4. The method of claim 1 , wherein the first and second solid-tolerant heat exchangers are constructed using different metallurgies.5. The method of claim 1 , wherein the first solid-tolerant heat exchanger is chilled using a ...

Подробнее
Номер записи: 59
22-06-2017 дата публикации

FLOW MANAGEMENT AND CO2-RECOVERY APPARATUS AND METHOD OF USE

Номер: US20170173520A1
Автор: Acharya Harish Radhakrishna, Shisler Roger Allen
Принадлежит:

An apparatus and method for flow management and CO-recovery from a COcontaining hydrocarbon flow stream, such as a post CO-stimulation flowback stream. The apparatus including a flow control zone, a gas separation zone, a pretreatment zone, and a CO-capture zone. The CO-capture zone is in fluid communication with the pretreatment zone to provide CO-capture from a pretreated flowback gas stream and output a captured CO-flow stream. The CO-capture zone includes a flow splitter to direct a first portion of the pretreated flowback gas stream to a CO-enricher to provide an enriched CO-stream for mixing with a second portion of the pretreated flowback gas to form a mixed stream. The CO-capture zone further includes at least one condenser to output the captured CO-flow stream. 1. An apparatus for flow management and CO-recovery from a COcontaining hydrocarbon flow stream comprising:{'sub': 2', '2', '2, 'a flow control zone in fluid communication with the COcontaining hydrocarbon flow stream to provide control of a flowrate of the COcontaining hydrocarbon flow stream and output a modified COcontaining hydrocarbon flow stream;'}{'sub': 2', '2', '2, 'a gas separation zone in fluid communication with the modified COcontaining hydrocarbon flow stream to provide separation of a gas from the modified COcontaining hydrocarbon flow stream and output a COcontaining hydrocarbon process stream;'}{'sub': '2', 'a pretreatment zone in fluid communication with the gas separation zone to provide removal of one or more of trace solids, aerogels, oil, hydrogen sulfides, water and non-gas liquids from the COcontaining hydrocarbon process stream and output a pretreated gas stream; and'}{'sub': 2', '2', '2', '2', '2', '2', '2', '2, 'a CO-capture zone in fluid communication with the pretreatment zone to provide CO-capture from the pretreated flowback gas stream and output a captured CO-flow stream, the CO-capture zone including a flow splitter to direct a second portion of the pretreated ...

Подробнее
Номер записи: 60
13-06-2019 дата публикации

CARBON DIOXIDE RECOVERY METHOD AND RECOVERY APPARATUS

Номер: US20190178574A1
Автор: NAITO Toshiyuki
Принадлежит: IHI CORPORATION

The carbon dioxide recovery apparatus has a dryer having a hygroscopic agent for drying a gas, and a separator for separating carbon dioxide from the gas dried by the dryer and discharging a residual gas from which carbon dioxide has been separated. The recovery apparatus further includes an introduction part for introducing a regeneration gas from outside for regenerating the hygroscopic agent, a regeneration system capable of supplying one of the regeneration gas introduced from the introduction part and the residual gas discharged from the separator to the dryer, and a switching mechanism for switching supply by the regeneration system between the regeneration gas and the residual gas in response to regeneration of the hygroscopic agent. 1. A carbon dioxide recovery apparatus , comprising:a dryer having a hygroscopic agent for drying a gas;a separator which separates carbon dioxide from the gas dried by the dryer and discharges a residual gas from which carbon dioxide has been separated;an introduction part which introduces from outside a regeneration gas for regenerating the hygroscopic agent;a regeneration system capable of supplying one of the regeneration gas introduced from the introduction part and the residual gas discharged from the separator, to the dryer; anda switching mechanism which switches supply by the regeneration system between the regeneration gas and the residual gas in response to regeneration of the hygroscopic agent.2. The carbon dioxide recovery apparatus according to claim 1 , further comprising:a recirculating system capable of supplying the residual gas discharged from the separator to the gas to be supplied to the separator,wherein the switching mechanism switches supply by the recirculating system so that the residual gas is supplied to the gas to be supplied to the separator while the regeneration gas is supplied to the dryer by the regeneration system.3. The carbon dioxide recovery apparatus according to claim 1 , wherein the ...

Подробнее
Номер записи: 61
15-07-2021 дата публикации

Method and apparatus for separating a synthesis gas by cryogenic distillation

Номер: US20210214218A1
Автор: Antoine Hernandez, Benoit Davidian, Erwan LE GULUDEC, Guillaume Teixeira, Matthias Linicus
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

In a process for separating a mixture containing carbon monoxide, hydrogen and carbon dioxide, the mixture cooled in a heat exchanger is contacted by a stream of liquid methanol at a temperature below −40° C. to produce carbon dioxide enriched methanol and a carbon dioxide depleted gas relative to the cooled mixture, the carbon dioxide depleted gas is cooled in the heat exchanger and is sent to a separation unit to produce a carbon monoxide enriched stream and a hydrogen enriched stream and the streams enriched in carbon monoxide and hydrogen are heated in the heat exchanger by exchanging heat with the mixture.

Подробнее
Номер записи: 62
13-07-2017 дата публикации

INCREASING CO/CO2 RATIO IN SYNGAS BY REVERSE WATER GAS SHIFT

Номер: US20170197829A1
Автор: Andersen Niels Ulrik
Принадлежит: Haldor Topsoe A/S

The present application relates to a production plant comprising—a synthesis gas generation step () arranged to receive a hydrocarbon or carboneous feedstock () and in a synthesis gas generation process provide a syngas, —a production step () arranged to receive the syngas and produce a product stream (), —a reverse water gas shift step () arranged to receive a H2 rich gas stream () and a C02 feed () and in a RWGS step obtain a reverse shifted gas stream (), and—means () for adding said reverse shifted gas stream () to the synthesis gas stream (). 1. Production plant comprisinga synthesis gas generation step arranged to receive a hydrocarbon or carboneous feed stock and in a synthesis gas generation process provide a syngasa production step arranged to receive the syngas and produce a product stream{'sub': 2', '2, 'a reverse water gas shift step arranged to receive a Hrich gas stream and a COfeed and in a RWGS step obtain a reverse shifted gas stream, and'}means for adding said reverse shifted gas stream to the synthesis gas stream.2. Production plant according to wherein the production step is a methanol synthesis loop arranged to receive the syngas/reverse shifted gas mixture and produce a Methanol-rich product stream.3. Production plant according to wherein the production step is a purification unit producing a product gas rich in Carbonmonoxide.4. Production plant according to claim 1 , wherein the synthesis gas generation step is a reforming step claim 1 , a gasification step claim 1 , or a partial oxidation step.5. Production plant according to claim 1 , wherein the reverse shifted gas stream is provided downstream the synthesis gas generation step.6. Production plant according to claim 1 , wherein the RWGS step comprises a hydrogen recovery unit upstream the RWGS step.712. Production plant according to claim 1 , any of the proceeding claims wherein the Hrich gas stream is a purge gas from the production step.8. Production plant according to claim 1 , wherein ...

Подробнее
Номер записи: 63
30-07-2015 дата публикации

Method and system for treating a flow back fluid exiting a well site

Номер: US20150210936A1
Автор: David R. Thompson, Kenneth L. Burgers, Minish M. SHAH, Raymond F. Drnevich
Принадлежит: Praxair Technology Inc

The present invention relates to a method and system for treating a flow back fluid exiting a well site following stimulation of a subterranean formation. More specifically, the invention relates to processing the flow back fluid, and separating into a carbon dioxide rich stream and a carbon dioxide depleted stream, and continuing the separation until the carbon dioxide concentration in the flow back stream until the carbon dioxide concentration in the flow back gas diminishes to a point selected in a range of about 50-80 mol % in carbon dioxide concentration, after which the lower concentration carbon dioxide flow back stream continues to be separated into a carbon dioxide rich stream which is routed to waste or flare, and a hydrocarbon rich stream is formed.

Подробнее
Номер записи: 64
26-07-2018 дата публикации

METHOD AND SYSTEM FOR SEPARATING CARBON DIOXIDE FROM FLUE GAS

Номер: US20180209726A1
Автор: BRITZ Christian Karl, Caruso Andrea, STALLMANN Olaf, WEITZEL Markus Jorg
Принадлежит:

A method for separating carbon dioxide from flue gas to generate a high purity CO2 stream. 1. A method for separating carbon dioxide from flue gas , the method comprising:compressing the flue gas,cooling the compressed flue gas in at least a heat exchanger;providing the cooled compressed gas to a separator to generate a carbon dioxide rich liquid stream and a carbon dioxide lean gas stream;providing the carbon dioxide rich liquid stream and the carbon dioxide lean gas stream to a distillation column to generate a non-condensable gas stream and a carbon dioxide liquid stream;providing the carbon dioxide liquid at a cold side of a reboiler to generate a purified carbon dioxide liquid stream;expanding the purified carbon dioxide liquid and supplying the expanded carbon dioxide liquid to the at least a heat exchanger for cooling the at least a heat exchanger;providing the expanded carbon dioxide liquid from the at least a heat exchanger to a high-pressure compressor to generate a compressed carbon dioxide vapor;providing at least a part of the compressed carbon dioxide vapor from the high-pressure compressor to a warm side of the reboiler to generate a cooled carbon dioxide liquid;expanding the cooled carbon dioxide liquid and passing the cooled carbon dioxide liquid through the at least a heat exchanger for cooling the at least a heat exchanger; andforwarding the purified carbon dioxide liquid and the cooled carbon dioxide liquid to the at least a heat exchanger.2. The method according to claim 1 , further comprising:cooling the flue gas in at least two heat exchangers connected in series,splitting the purified carbon dioxide liquid in at least two streams,expanding each of the streams to a given pressure to generate at least two expanded carbon dioxide liquids streams having different temperatures,supplying each expanded carbon dioxide liquid stream to one of the at least two heat exchangers.3. The method according to claim 1 , further comprising:expanding the cooled ...

Подробнее
Номер записи: 65
02-07-2020 дата публикации

Method and plant for producing ethylene

Номер: US20200207686A1
Автор: Andreas Obermeier, Andreas Peschel, Desislava TOTA, Helmut Fritz, TUAT PHAM Duc
Принадлежит: Linde GmbH

Proposed is a process for producing ethylene wherein using a dehydrogenation of ethane a process gas containing at least ethane, ethylene and compounds having a lower boiling point than ethane and ethylene is formed, wherein using at least a part of the process gas a separation input is formed and subjected to a low-temperature separation ( 6 ) in which the separation input is cooled and in which one or more condensates are separated from the separation input, wherein the condensate(s) are at least partly subjected to a low-temperature rectification to obtain a gaseous first fraction and a liquid second fraction, wherein the gaseous first fraction contains at least the ethane and the ethylene in a lower proportion than in the separation input and the compounds having a lower boiling point than ethane and ethylene in a higher proportion than in the separation input. It is provided that the first fraction is at least partly subjected to a pressure swing adsorption ( 7 ) by means of which a third fraction containing predominantly or exclusively ethylene and ethane and a fourth fraction containing predominantly or exclusively methane and carbon monoxide are formed. A corresponding plant ( 100 ) likewise forms part of the subject matter of the present invention.

Подробнее
Номер записи: 66
09-08-2018 дата публикации

Separating Carbon Dioxide and Ethane from a Mixed Stream

Номер: US20180224203A1
Автор: Oelfke Russell H.
Принадлежит:

Embodiments described herein provide methods and systems for separating a mixed ethane and CO. A method described includes generating a liquid stream including ethane and CO. The liquid stream is flashed to form an ethane vapor stream and solid CO. The solid COis accumulated in an accumulation vessel and the gas is removed from the top of the accumulation vessel. 110-. (canceled)11. A system for separating a mixed stream of COand ethane , comprising:{'sub': '2', 'a purification system configured to remove contaminants from the mixed stream and generate a liquid stream comprising an azeotropic mixture of ethane and CO;'}{'sub': '2', 'a flash valve configured to isoenthalpically flash the mixed liquid stream forming solid COand a vapor stream enhanced in ethane; and'}{'sub': '2', 'an accumulation vessel configured to capture the solid CO;'}a compressor and a chiller configured to recondense the vapor stream forming a condensed gas;{'sub': '2', 'a fractionator configured to remove a contaminated ethane stream, comprising ethane, methane, and CO, from the condensed gas;'}{'sub': '2', 'a flash vessel configured to separate methane from the contaminated ethane stream, thereby forming a remainder stream that comprises ethane and CO, wherein the remainder stream is combined with the liquid stream;'} [{'sub': '2', 'warm the solid COin the accumulation vessel and drive off trapped hydrocarbon therein when the outlet valve is open, and'}, {'sub': 2', '2, 'melt the solid COin the accumulation vessel when the outlet valve is closed, thereby forming a liquid COproduct stream.'}], 'wherein the accumulation vessel has an outlet valve and a heater, the heater configured to'}12. The system of claim 11 , comprising a cryogenic separation system configured to form the mixed stream from a natural gas feed.1314-. (canceled)15. The system of claim 11 , wherein the fractionator is configured to isolate a liquid ethane product stream.16. (canceled)17. The system of claim 11 , comprising a ...

Подробнее
Номер записи: 67
18-07-2019 дата публикации

Heat Exchange Mechanism For Removing Contaminants From A Hydrocarbon Vapor Stream

Номер: US20190219328A1
Автор: Urbanski Nicholas F.
Принадлежит:

A system for melting contaminant-laden solids that have been separated from a hydrocarbon-containing vapor stream in a hydrocarbon distillation tower, comprising at least one plate positioned where the solids form within the hydrocarbon distillation tower, hollow tubing forming an integral part of each of the at least one plate, and a heating medium disposed to flow through the hollow tubing at a higher temperature than a temperature of the solids to at least partially melt the solids. 1. A system for melting contaminant-laden solids that have been separated from a hydrocarbon-containing vapor stream in a controlled freeze zone section of a hydrocarbon distillation tower , comprising: a plurality of plates positioned where the solids form within the hydrocarbon distillation tower;', 'hollow tubing forming an integral part of each of the a plurality of plates;', 'a heating medium disposed to flow through the hollow tubing at a higher temperature than a temperature of the solids to at least partially melt the solids; and', 'a plurality of passages through at least one of the plurality of plates, said passages allowing equilibration of liquid surrounding the at least one plate., 'a melt tray assembly within the controlled freeze zone section, the melt tray assembly constructed and arranged to at least partially melt the solids that are formed in the controlled freeze zone section, the melt tray assembly includes a heat exchange mechanism comprising'}2. The heat exchange mechanism of claim 1 , wherein the at least one of the plurality of plates is substantially rectangular in shape.3. The heat exchange mechanism of claim 1 , wherein the at least one of the plurality of plates is conical in shape.4. The heat exchange mechanism of claim 1 , wherein the at least one of the plurality of plates is frusto-conical in shape.5. The heat exchange mechanism of claim 1 , wherein the plurality of plates are concentrically arranged claim 1 , with each of the plurality of plates ...

Подробнее
Номер записи: 68
25-08-2016 дата публикации

METHOD AND APPARATUS FOR CRYOGENIC SEPARATION OF A MIXTURE CONTAINING AT LEAST CARBON MONOXIDE, HYDROGEN AND NITROGEN

Номер: US20160245583A1
Автор: FERNANDEZ Angela, MARTY Pascal, PRASAD Bhadri, Victor Marie-Pascal
Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et L'Exploitation des Procédés Georges Claude

The invention relates to an apparatus for cryogenic separation of a mixture of carbon monoxide, hydrogen and nitrogen, including a stripping column and a denitrogenation column, a pipe for sending the mixture in liquid form to the head of the stripping column, a pipe for removing a liquid depleted of hydrogen connected to the stripping column, a pipe for removing a gas enriched with hydrogen from the stripping column, means for sending the liquid depleted of hydrogen or a fluid derived from said liquid to the denitrogenation column, a pipe for drawing a liquid enriched with carbon monoxide from the denitrogenation column, a pipe for drawing a gas enriched with nitrogen from the head of the denitrogenation column and means for sending at least one portion of the gas enriched with hydrogen to the denitrogenation column. 113-. (canceled)14. A method for the cryogenic separation of a mixture containing at least carbon monoxide , hydrogen and nitrogen , the method comprising the steps of:introducing the mixture, in liquid form, to the top of a stripping column under conditions effective for separation therein to form a hydrogen-lean liquid and a hydrogen-enriched gas;introducing the hydrogen-lean liquid or a fluid derived from the hydrogen-lean liquid to a nitrogen-removal column under conditions effective for separation therein to form a carbon monoxide-enriched liquid and a nitrogen-enriched gas containing the majority of the nitrogen present in the mixture;determining if the nitrogen content of an identified stream selected from the group consisting of the mixture, the nitrogen-enriched gas, a carbon monoxide-enriched gas removed from the top of the separation column in the case of variant ii), and combinations thereof; 'if the nitrogen content of the identified stream is below a threshold,', 'wherein'}i) at least part of the hydrogen-enriched gas coming from the stripping column is sent to an intermediate point of the nitrogen-removal column, orii) if the fluid is ...

Подробнее
Номер записи: 69
01-08-2019 дата публикации

Carbon Dioxide Capture And Conversion Methods And Systems

Номер: US20190232216A1
Автор: Fredrick Glasser, Mohammed Salah-Eldin Imbabi
Принадлежит: University of Aberdeen

The present invention provides a method of mineralisation of carbon dioxide. The method comprises forming an alkaline in aqueous solution containing carbonate anions by dissolving the carbon dioxide and an alkali such as ammonia in water. Next, the method comprises mixing the alkaline aqueous solution with a water source (such as a connate/formation brine or produced water or industrial waste waters or re-constituted mineral-bearing waters) containing magnesium and calcium cations. A first product (e.g. PCC) containing calcium cations and carbonate anions is precipitated in a first precipitation step at a first pH (e.g. around pH7.5) and then a second product (e.g. nesquehonite (NQ) a type of PMC) containing magnesium cations and carbonate anions is precipitated in a second precipitation step at a second, higher pH e.g. around pH 9.5.

Подробнее
Номер записи: 70
24-08-2017 дата публикации

METHOD FOR THE CAPTURE OF CARBON DIOXIDE THROUGH CRYOGENICALLY PROCESSING GASEOUS EMISSIONS FROM FOSSIL-FUEL POWER GENERATION

Номер: US20170241707A1
Автор: Bliss Charles, Moseley Mason Charles
Принадлежит:

A cryogenic method for capturing carbon dioxide in the gaseous emissions produced from the fossil-energy combustion of solid, liquid, or gaseous fossil fuels in a power generation installation employing an OxyFuel mode of combustion. The method includes: producing essentially pure carbon dioxide under elevated pressure and at near ambient temperatures in a Carbon-Dioxide Capture Component from the carbon-dioxide content of at least a part of the gaseous emissions produced from fossil-energy fueled combustion in the Oxyfuel mode of combustion; separating atmospheric air in an Air Separation Component into a stream of liquid nitrogen and a stream of high-purity oxygen; supplying low temperature, compressed purified air to a cryogenic air separation unit (cold box) within the Air Separation Component; collecting low temperature thermal energy from coolers employed within the Carbon-Dioxide Capture Component and the Air Separation Component; and converting the collected thermal energy to electricity within a Thermal-Energy Conversion Component. 121-. (canceled)22. (canceled)23. (canceled)24. The method of including driving turbo-compressors within the carbon dioxide capture component with steam supplied from the power generation installation operating in an OxyFuel combustion mode.25. The method of including driving turbo-compressors within the air separation component with steam supplied from the power generation installation operating in an OxyFuel combustion mode.26. The method of including:pre-cooling the gaseous emissions from the power generation installation produced by OxyFuel mode combustion of fossil fuel in the carbon dioxide capture component by heat exchange with the upper refrigerant supplied by the thermal energy conversion component, wherein the gaseous emissions are partially dried by cooling to a temperature at which their water vapor content condenses and the condensate is separated; and,feeding the partially dried gaseous emissions to a first stage ...

Подробнее
Номер записи: 71
17-09-2015 дата публикации

Separating Carbon Dioxide From Natural Gas Liquids

Номер: US20150260453A1
Автор: Moorkanikkara Srinivas N.
Принадлежит:

Embodiments described herein provide a method and systems for separating carbon dioxide from heavy hydrocarbons. The method includes cooling a first liquid stream including carbon dioxide and heavy hydrocarbons within an oscillatory crystallization unit to generate carbon dioxide solids and a second liquid stream including the heavy hydrocarbons. The method also includes separating the carbon dioxide solids from the second liquid stream via a solid-liquid separation system. 1. A method for separating carbon dioxide from heavy hydrocarbons , comprising:cooling a first liquid stream comprising carbon dioxide and heavy hydrocarbons within an oscillatory crystallization unit to generate carbon dioxide solids and a second liquid stream comprising the heavy hydrocarbons; andseparating the carbon dioxide solids from the second liquid stream via a solid-liquid separation system.2. The method of claim 1 , comprising cooling the first liquid stream within a heat exchanger upstream of the oscillatory crystallization unit.3. The method of claim 2 , wherein the first liquid stream is cooled to a temperature that is slightly higher than a freezing point of the carbon dioxide within the heat exchanger.4. The method of claim 1 , comprising reducing a pressure of the first liquid stream via a pressure reducing device upstream of the oscillatory crystallization unit.5. The method of claim 1 , wherein the first liquid stream is cooled to a temperature that is below a freezing point of the carbon dioxide within the oscillatory crystallization unit to generate the carbon dioxide solids.6. The method of claim 1 , comprising separating the first liquid stream from a methane stream within a separation system upstream of the oscillatory crystallization unit.7. The method of claim 6 , comprising:flowing the methane stream from the separation system to a heat exchanger that is upstream of the oscillatory crystallization unit; andusing the methane stream to cool the first liquid stream within ...

Подробнее
Номер записи: 72
30-07-2020 дата публикации

PROCESS AND METHOD FOR TRANSPORTING LIQUID HYDROCARBON AND CO2 FOR PRODUCING HYDROGEN WITH CO2 CAPTURE

Номер: US20200240588A1
Автор: Al Khowaiter Ahmad O., Jamal Aqil, Younes Mourad
Принадлежит:

Systems and methods related to loading and unloading stations for simultaneous unloading of a first fluid from at least one storage tank in a vessel and loading of a second fluid into a storage tank of the same vessel are provided. In at least one aspect, a loading and unloading station includes a first connector for fluid connection to a storage tank of the vessel for unloading the first fluid, and a source of the second fluid. The station also includes a second connector for fluidly connecting the source of the second fluid with a storage tank of the vessel for loading the second fluid. The station further includes a first thermal linkage between the first fluid being unloaded and the second fluid being loaded that facilitates heat transfer between the first fluid and the second fluid at the loading and unloading station. 1. A loading and unloading station for simultaneous unloading of a first fluid from at least one storage tank in a vessel and loading of a second fluid into a storage tank of the same vessel comprising:a first connector for fluid connection to the at least one storage tank for unloading the first fluid;a source of the second fluid;a second connector for fluidly connecting the source of the second fluid with the at least one storage tank of the vessel for loading the second fluid into the at least one storage tank; anda first thermal linkage between the first fluid being unloaded and the second fluid being loaded that facilitates heat transfer between the first fluid and the second fluid at the loading and unloading station.2. The loading and unloading station of claim 1 , wherein the first fluid comprises liquefied petroleum gas (LPG) and the second fluid comprises CO.3. The loading and unloading station of claim 2 , wherein the first thermal linkage comprises a heat exchanger that transfers coldness of the LPG to the COresulting in cooling of the CO.4. The loading and unloading station of claim 2 , wherein the loading and unloading station ...

Подробнее
Номер записи: 73
06-09-2018 дата публикации

METHOD AND APPARATUS FOR PRODUCING A MIXTURE OF CARBON MONOXIDE AND HYDROGEN

Номер: US20180251373A1
Автор: FERNANDEZ Angela, Hernandez Antoine, Tsevery Jean-Marc
Принадлежит: L'Air Liquide, Societe Anonyme pour I'Etude et I'Etude et I'Exploitation des Procedes Georges Cla

In a method for producing a gaseous mixture of CO and H, a first gas comprising at least 50% CO is compressed in a first compressor to form a first compressed gas cooled to a first temperature and mixes with a second gas comprising at least 50% hydrogen in order to form the gaseous mixture, at least one of the first and second gases originating from a cryogenic distillation separation unit in which a feed gas containing Hand CO cools in a first heat exchanger and is separated in at least one distillation column and at least one part of the second gas heats in the separation unit to a third temperature lower than the first temperature and is then sent to mix with the first gas. 112-. (canceled)13. A process for the production of a gas mixture of carbon monoxide and hydrogen in which:i) compressing a first gas comprising at least 50% of carbon monoxide in a first compressor in order to form a first compressed gas cooled to a first temperature;ii) mixing a second gas comprising at least 50% of hydrogen with the first compressed gas in order to form the gas mixture;iii) at least one of the first and second gases originates from a unit for separation by cryogenic distillation in which a feed gas containing hydrogen and carbon monoxide is cooled in a first heat exchanger and is separated in at least one distillation column;wherein the process further includes a step selected from the group consisting of:a) a part of the first compressed gas is sent to the separation unit, where the part of the first compressed gas is cooled down to a second temperature which is less than the first temperature and is subsequently mixed with the gas mixture or the second gas;b) at least a part of the second gas is reheated in the separation unit up to a third temperature which is less than the first temperature and is subsequently sent to be mixed with the first gas, andc) combinations thereof.14. The process as claimed in claim 13 , in which the first and second gases originate from the ...

Подробнее
Номер записи: 74
15-09-2016 дата публикации

Unit and method for purifying co2 by adsorption

Номер: US20160265840A1
Автор: Patrick Le Bot
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

The invention relates to a gas depleted of carbon dioxide produced by distillation, which is separated such as to produce a gas depleted of hydrogen, the gas depleted of hydrogen being used as a regeneration gas of a system for purification by adsorption upstream from the distillation, the composition of the regeneration gas at the intake of the purification system not being in the range of flammability in air.

Подробнее
Номер записи: 75
06-08-2020 дата публикации

COMPRESSING SYSTEM, AND GAS COMPRESSING METHOD

Номер: US20200248961A1
Автор: MIYATA Hiroyuki, NAGAO Hideki, YONEMURA Naoto
Принадлежит:

A compressing system includes a compression section that compresses a target gas to an intermediate pressure, which is equal to or higher than a critical pressure and lower than a target pressure to generate an intermediate supercritical fluid, a cooling section that cools the intermediate supercritical fluid generated in the compression section to near a critical temperature to generate an intermediate supercritical pressure liquid, and a pumping section that compresses the intermediate supercritical pressure liquid generated in the cooling section to a pressure that is equal to or higher than the target pressure. At least one of the intermediate supercritical pressure liquid compressed in the pumping section, a low-temperature liquid generated by extracting the intermediate supercritical pressure liquid on the upstream side of the pumping section to reduce pressure to near the critical pressure, and an external cooling medium is used as a cooling medium in the cooling section. 16-. (canceled)7. A gas compressing method that compresses carbon dioxide as a target gas to a pressure that is equal to or higher than a target pressure higher than a critical pressure , the gas compressing method comprising:a compression step of compressing the carbon dioxide to an intermediate pressure, which is equal to or higher than the critical pressure and is lower than the target pressure;a first cooling step of cooling the carbon dioxide compressed in the compression step to generate an intermediate supercritical fluid;a second cooling step of cooling the intermediate supercritical fluid cooled in the first cooling step to a temperature range of ±20° C. from a critical temperature of the carbon dioxide to generate an intermediate supercritical pressure liquid;a pressure-reduction step of reducing the pressure of a portion of the intermediate supercritical pressure liquid extracted a main flow thereof after the second cooling step to generate a low-temperature liquid; anda pumping ...

Подробнее
Номер записи: 76
01-10-2015 дата публикации

PROCESS FOR THE REMOVAL OF CO2 FROM ACID GAS

Номер: US20150276308A1
Автор: Pellegrini Laura Annamaria
Принадлежит: STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

The invention relates to a process for the removal of COfrom acid gas by cryogenic distillation performed in two steps. The feed mixture is first distilled at high pressure (at least 45 bar) in a first distillation column. The top product or a part thereof is then, after heating, subjected to a second distillation step at a lower pressure (lower than 45 bar). The top product of the second distillation step is methane of high purity (more than 99 mol.%). The bottom product of the second distillation step is recycled back to the first distillation column. The method according to the invention allows complete separation of methane also at higher level of acidic components, is economical and does not result in solid CObuild-up, which is a common problem in cryogenic distillation. 1. A process for the removal of carbon dioxide (CO) from a feed mixture comprising methane and carbon dioxide (CO) , the process comprising:{'sub': 2', '2, '(a) subjecting the feed mixture to a first distillation step in a first distillation column or a first section of a distillation column, at a pressure of at least 45 bar, yielding after distillation a first bottom product stream comprising COand a first top product stream comprising COand methane,'}(b) heating said first top product stream or a part of said first top product stream to yield a heated first top product stream respectively a heated part of said first top product stream, wherein heating is done to a temperature higher than the dew point of the stream at the pressure of a subsequent second distillation step,(c) subjecting the heated first top product stream or the heated part of said first top product stream, respectively, to the second distillation step in a second distillation column or a second section of the distillation column, at a pressure lower than 45 bar, yielding thereby a second top product stream comprising methane and a second bottom product stream,(d) feeding said second bottom product stream to said first ...

Подробнее
Номер записи: 77
20-09-2018 дата публикации

Method for Removing a Foulant from a Gas Stream without External Refrigeration

Номер: US20180266762A1
Автор: Baxter Larry, Hoeger Christopher, Mansfield Eric
Принадлежит:

A process for removing a foulant from a gas stream is disclosed. The gas stream, containing a foulant, is cooled across a first heat exchanger and a second heat exchanger, producing a solid foulant entrained in cryogenic liquid as a foulant slurry, and a foulant-depleted gas stream. The foulant-depleted gas stream is passed through a cryogenic turbine and a first separation vessel, producing a light gas stream and further solid foulant. The solid foulants are recovered by a combination of pressurization, melting, and distillation to produce a liquid foulant product. Heat is recovered from the various streams in the various heat exchangers and the melter. 2. The method of claim 1 , wherein the gas stream comprises combustion flue gas claim 1 , syngas claim 1 , producer gas claim 1 , natural gas claim 1 , steam reforming gas claim 1 , any hydrocarbon that has a lower freezing point than the temperature of the coolant claim 1 , light gases claim 1 , refinery off-gases claim 1 , or combinations thereof.3. The method of claim 1 , wherein the cooled cryogenic liquid recycle stream recombines in a location comprising the second heat exchanger claim 1 , the third heat exchanger claim 1 , or the foulant slurry stream.4. The method of claim 1 , wherein a portion of refrigeration is provided to the first heat exchanger using a reverse Rankine refrigeration cycle having a refrigerant claim 1 , wherein the reverse Rankine refrigeration cycle comprises the steps of:a. compressing the refrigerant;b. condensing the refrigerant;c. expanding the refrigerant;d. vaporizing the refrigerant;wherein step (b) occurs in the first heat exchanger;wherein step (d) occurs in the first heat exchanger.5. The method of claim 4 , wherein step (b) also includes a supplemental ambient heat exchange process.6. The method of claim 4 , wherein step (b) also includes at least two ambient heat exchangers in parallel before the first heat exchanger.7. The method of claim 6 , wherein the at least two ...

Подробнее
Номер записи: 78
04-10-2018 дата публикации

PROCESS AND PLANT FOR PRODUCING SYNTHESIS GAS WITH VARIABLE COMPOSITION

Номер: US20180282159A1
Автор: Hernandez Antoine, Polster Bernd
Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

A process and a plant for the continuous conversion of a hydrocarbonaceous feed gas into a synthesis gas comprising carbon monoxide and hydrogen, wherein the H/CO molar ratio of the product gases can be varied within a wide range. This is achieved in that at least a part of a methane-rich gas obtained during the fractionation of the raw synthesis gas is admixed to the feed gas mixture, and that in the alternative 115-. (canceled)16. A process for the continuous conversion of a hydrocarbonaceous feed gas into a synthesis gas comprising carbon monoxide and hydrogen , comprising the following process steps carried out one after the other:a) providing a feed gas mixture which comprises hydrocarbonaceous gas and steam, as well as a heating gas mixture which comprises a fuel gas and an oxygen-rich gas;{'sub': 2', 'B, 'b) splitting the feed gas mixture under reforming conditions by catalytic steam reformation in a tubular reformer fired by burners into a raw synthesis gas containing hydrogen, carbon monoxide, carbon dioxide and methane, wherein heat necessary for splitting, which is indirectly transmitted to the feed gas mixture, is produced by combustion of the heating gas mixture, wherein in normal operation of the process a base H/CO ratio (V) is obtained,'}c) separating the carbon dioxide from the raw synthesis gas;{'sub': '2', 'd) fractionating the raw synthesis gas into a hydrogen-rich gas, a carbon monoxide-rich gas and a methane-rich gas, wherein the hydrogen-rich gas optionally is supplied to a further cleaning step and otherwise is discharged from the process as Hproduct gas, and the carbon monoxide-rich gas is supplied to the further use outside the process as CO product gas;'}{'sub': '2', 'e) optionally cleaning of the hydrogen-rich gas by separating gaseous impurities and admixing the same to the heating gas mixture and discharging the cleaned hydrogen-rich gas as Hproduct gas for the further use outside the process;'}f) admixing at least a part of the methane ...

Подробнее
Номер записи: 79
19-09-2019 дата публикации

Method and system for producing olefins

Номер: US20190284112A1
Автор: Anton Wellenhofer, Florian Winkler, Helmut Fritz, Martin Schubert, Mathieu Zellhuber
Принадлежит: Linde GmbH

A process for producing one or more olefins is proposed in which a reaction input containing one or more paraffins is formed and in which a portion of the paraffin(s) present in the reaction input is converted by oxidative dehydrogenation into the olefin(s) to obtain a process gas, wherein the process gas contains at least the olefin(s), the unconverted paraffin(s), oxygen and carbon monoxide and wherein at least a portion of the process gas is subjected to a low temperature separation in which at an operating pressure level one or more gas fractions enriched in oxygen and carbon monoxide compared to the process gas are formed. It is provided that in the low temperature separation in the formation and/or for the conduction of the or at least one of the gas fractions one or more containers and/or one or more conduits having a burst pressure of at least ten times the operating pressure level are used and that the container or at least one of the containers via the or at least one of the conduits is connected to one or more heat exchangers, wherein a total length of the or of the at least one conduit between the or the at least one container and the heat exchanger(s) is not more than fifty times the internal diameter of said conduit. A corresponding plant ( 100 ) likewise forms part of the subject matter of the invention.

Подробнее
Номер записи: 80
27-10-2016 дата публикации

PROCESS AND APPARATUS FOR SEPARATING NO2 FROM A CO2 AND NO2-CONTAINING FLUID

Номер: US20160313058A1
Автор: BEASSE Gregoire, Bourhy-Weber Claire, KOSURI Madhava R., KULKARNI Sudhir S., Leclerc Matthieu
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

A process for separating carbon dioxide from a fluid containing carbon dioxide, NO, and at least one of oxygen, argon, and nitrogen comprises the steps of separating at least part of the fluid into a carbon dioxide enriched stream, a carbon dioxide depleted stream comprising COand at least one of oxygen, argon, and nitrogen and a NOenriched stream and recycling said NOenriched stream upstream of the separation step. 1. An apparatus for separating NOfrom a COand NO-containing fluid , comprising:{'sub': 2', '2, 'a source of a fluid comprising NOand CO;'}a rectifying distillation column receiving the source fluid;a fluid separation membrane that receives a liquid stream from the rectifying column and yields a liquid non-permeate stream and a gaseous permeate stream; anda pump feeding, to the rectifying column, the non-permeate liquid from the membrane.2. The apparatus of claim 1 , further comprising:a heat exchanger at least partially condensing a gaseous stream from the rectifying column;{'sub': 2', '2', '2, 'a phase separator receiving the at least partially condensed stream from the heat exchanger and producing a gaseous stream comprising a majority of N, O, and/or Ar and a liquid stream comprising a majority of CO;'}{'sub': 2', '2, 'a stripping distillation column receiving the liquid stream comprising a majority of CO2 from the phase separator, the stripping column being adapted and configured to separate the contents of the liquid stream comprising a majority of COinto a gaseous stream and a liquid COproduct stream.'}3. The apparatus of claim 2 , further comprising a compressor and a drying unit adapted and configured to compress and dry the source fluid claim 2 , wherein the heat exchanger is also adapted and configured to at least partially condense the compressed and dried source fluid prior to being fed to the rectifying column.4. The apparatus of claim 3 , wherein the fluid source is a boiler adapted and configured to produce flue gas and the flue gas is the ...

Подробнее
Номер записи: 81
25-10-2018 дата публикации

Method for Separating Components using Solids Producing Multi-Stage Direct and Indirect-Contact Exchange

Номер: US20180306495A1
Автор: Baxter Andrew, Baxter Larry, Burt Stephanie, Davis Nathan, Frankman David, Hoeger Christopher, Mansfield Eric, Sayre Aaron, Stitt Kyler
Принадлежит:

A process for forming a solid product or products is disclosed. The process is provided with n desublimating exchangers. An exchanger E being associated with a first exchanger and an exchanger En being associated with an nth exchanger, n representing the number of exchangers. The n exchangers comprise at least one direct-contact exchanger comprising a contact fluid. A process fluid is passed through the n exchangers in order from E through En. The process fluid comprises a product component or components. The solid product or products form from the product component or components in the plurality of exchangers by desublimation. The solid product or products are separated from the process fluid. In this manner, a solid product or products is formed. 2. The process of claim 1 , wherein at least one of then exchangers further comprises an indirect-contact heat exchanger comprising a first chamber through which the process fluid passes and a second chamber through which a coolant passes.3. The process of claim 2 , wherein the indirect-contact heat exchanger comprises a shell and tube style exchanger claim 2 , plate style exchanger claim 2 , plate and frame style exchanger claim 2 , plate and shell style exchanger claim 2 , spiral style exchanger claim 2 , plate fin style exchanger claim 2 , or combinations thereof.4. The process of claim 2 , wherein the forming step is accomplished by a portion of the product component or components desublimating to form a portion of the solid product or products on an outer surface of the second chamber.5. The process of claim 4 , wherein the separating step is accomplished by providing the indirect-contact heat exchanger with a means for causing the second chamber to flex claim 4 , causing the portion of the solid product or products to fall from the outer surface of the second chamber and removing the portion of the solid product or products from the at least one indirect-contact heat exchanger.6. The process of claim 5 , wherein the ...

Подробнее
Номер записи: 82
25-10-2018 дата публикации

Method for Off-Gasing Purified Gases in a Melting Device

Номер: US20180306496A1
Автор: Baxter Larry, Davis Nathan, Sayre Aaron, Stitt Kyler
Принадлежит:

A method for producing a purified product stream is disclosed. A process stream is provided to a screw compressor, the process stream comprising a contact liquid stream and a product stream, wherein the product stream comprises a solid portion. The process stream is passed through the screw compressor and into a melting device. The solid portion of the product stream is melted in the melting device to a temperature and a pressure such that a portion of the product stream vaporizes, forming a purified product stream, and vaporization of the contact liquid stream into the purified product stream is essentially prevented. A restricted outlet is provided to an upper portion of the vessel. The restricted outlet is proportionally controlled such that the pressure and the temperature is maintained as the purified product stream passes through the restricted outlet. In this manner, the purified product stream is produced. 2. The method of claim 1 , providing the product stream further comprising carbon dioxide claim 1 , nitrogen oxide claim 1 , sulfur dioxide claim 1 , nitrogen dioxide claim 1 , sulfur trioxide claim 1 , hydrogen sulfide claim 1 , hydrogen cyanide claim 1 , water claim 1 , condensed hydrocarbons claim 1 , or combinations thereof.3. The method of claim 1 , providing the screw compressor comprising a connection to the melting device above a level of the process stream.4. The method of claim 1 , providing the screw compressor comprising a connection to the melting device below a level of the process stream.5. The method of claim 1 , providing the restricted outlet comprising a valve claim 1 , a compressor claim 1 , a pump claim 1 , or a combination thereof.6. The method of claim 5 , providing the vessel further comprising a pressure sensor claim 5 , an output of the pressure sensor transmitting the pressure.7. The method of claim 6 , wherein the proportionally controlling step is accomplished by opening or closing the restricted outlet proportional to the ...

Подробнее
Номер записи: 83
01-10-2020 дата публикации

Process and device for the combined production of hydrogen and carbon dioxide from a hydrocarbon mixture

Номер: US20200307997A1
Автор: Jean-Pierre Tranier
Принадлежит: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude

The invention relates to a process for the combined production of hydrogen and carbon dioxide from a hydrocarbon mixture, in which the residual gas of a PSA H 2 ( 12 ) is separated by permeation in order to reduce the hydrocarbon content thereof and the hydrocarbon-purified gas is separated at a low temperature to produce a carbon dioxide-rich liquid ( 22 ).

Подробнее
Номер записи: 84
01-10-2020 дата публикации

CO2 SEPARATION & LIQUEFACTION SYSTEM AND METHOD

Номер: US20200309451A1
Автор: Abarr Miles L., Frazier Scott Raymond
Принадлежит:

A CO2 separation and liquefaction system such as might be used in a carbon capture and sequestration system for a fossil fuel burning power plant is disclosed. The CO2 separation and liquefaction system includes a first cooling stage to cool flue gas with liquid CO2, a compression stage coupled to the first cooling stage to compress the cooled flue gas, a second cooling stage coupled to the compression stage and the first cooling stage to cool the compressed flue gas with a CO2 melt and provide the liquid CO2 to the first cooling stage, and an expansion stage coupled to the second cooling stage to extract solid CO2 from the flue gas that melts in the second cooling stage to provide the liquid CO2. 1. A CO2 separation and liquefaction system comprising:a first cooling stage to cool flue gas with liquid CO2;a compression stage coupled to the first cooling stage to compress the cooled flue gas;a second cooling stage coupled to the compression stage and the first cooling stage to cool the compressed flue gas with a CO2 melt and provide the liquid CO2 to the first cooling stage; andan expansion stage coupled to the second cooling stage to extract solid CO2 from the flue gas that melts in the second cooling stage to provide the liquid CO2.2. The CO2 separation and liquefaction system of further comprising:a compressor located upstream from the first cooling stage; anda heat exchanger, cooled by an ambient environment, and coupled in series between the compressor and the first cooling stage.3. The CO2 separation and liquefaction system of wherein the first cooling stage cools the flue gas with an N2 rich flue stream created by the solid CO2 extraction.4. The CO2 separation and liquefaction system of wherein the expansion stage comprises:a plurality of heat exchangers coupled in series to extract the solid CO2 from the flue gas, anda plurality of expanders coupled in series and downstream from the plurality of heat exchangers; andwherein each of the heat exchangers is ...

Подробнее
Номер записи: 85
08-11-2018 дата публикации

METHOD AND APPARATUS FOR SEPARATING A SYNTHESIS GAS

Номер: US20180320959A1
Автор: Demolliens Bertrand, Hernandez Antoine, Tsevery Jean-Marc
Принадлежит: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

In a method for separating a synthesis gas containing carbon monoxide and hydrogen, a synthesis gas flow from a synthesis gas source is compressed in a compressor and separated into at least three gaseous products. If there is insufficient synthesis gas, at least three separation products are recycled in the compressor in order to separate said products. 115-. (canceled)16. A method for separating a synthesis gas containing carbon monoxide and hydrogen wherein:i) compressing a synthesis gas flow originating from a synthesis gas source in a compressor;ii) purifying the compressed synthesis gas in a purification unit to remove water and/or carbon dioxide;iii) cooling the compressed purified synthesis gas flow;iv) separating the cooled synthesis gas flow by a separation process selected from the group consisting of scrubbing, distillation at a cryogenic temperature, adsorption in a separation unit, and combinations thereof; andv) producing at least the following three gases in the separation unit: a carbon monoxide-enriched gas, a hydrogen-enriched gas, a residual gas containing carbon monoxide and hydrogen which contains less carbon monoxide than the carbon monoxide-enriched gas and less hydrogen than the hydrogen-enriched gas,wherein only if the synthesis gas flow passed to the compressor is below a threshold or zero, at least a portion of at least two the gases selected from the group consisting of the carbon monoxide-enriched gas, the hydrogen-enriched gas, the residual gas, and combinations thereof, are introduced at a location downstream of the source and upstream of the purification unit.17. The method as claimed in claim 16 , wherein:a) the compressed synthesis gas is stored while the flow of synthesis gas is above the threshold; andb) at least a portion of the compressed synthesis gas and at least a portion of at least each of the first three gases from stage v) are passed downstream of the source to be purified in the purification unit and separated in the ...

Подробнее
Номер записи: 86
16-11-2017 дата публикации

NGL Recovery from a Recycle Stream Having Natural Gas

Номер: US20170328632A1
Автор: Prim Eric
Принадлежит:

A method for recovering natural gas liquids from a recycle stream having natural gas is provided. In one embodiment, a carbon dioxide recycle stream that comprises carbon dioxide, natural gas, and natural gas liquids is received. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide and the natural gas, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a system comprises piping and a separator. The piping is configured to receive a recycle stream, and the separator is coupled to the piping and is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream. 1. A method for producing a purified carbon dioxide (CO) recycle stream and a natural gas liquids (NGL) rich stream , comprising:{'sub': 2', '2', '2', '2', '1', '2', '3', '8', '2, 'cooling a COrecycle stream in a heat exchanger to produce a cooled COrecycle stream, wherein the COrecycle stream comprises CO, C-Chydrocarbons, C-Chydrocarbons, and HS;'}{'sub': 2', '2', '2', '2', '1', '2', '3', '8', '2, 'separating the cooled COrecycle stream into a cooled purified COrecycle stream and a sour NGL rich stream in a NGL stabilizer, wherein the cooled purified COrecycle stream comprises the COand the C-Chydrocarbons, and wherein the sour NGL rich stream comprises the C-Chydrocarbons and the HS;'}{'sub': 2', '2, 'heating the cooled purified COrecycle stream in the heat exchanger to produce the purified COrecycle stream; and'}separating the sour NGL rich stream into the NGL rich stream and an acid gas stream in a separator,{'sub': 3', '8, 'wherein the NGL rich stream comprises the C-Chydrocarbons, and'}{'sub': '2', 'wherein the acid gas stream comprises the HS.'}2. The method according to claim 1 , further comprising:recovering the NGL rich stream as usable product; and{'sub': '2', ' ...

Подробнее
Номер записи: 87
08-11-2018 дата публикации

METHOD AND APPARATUS FOR USING SUPERCRITICAL FLUIDS IN SEMICONDUCTOR APPLICATIONS

Номер: US20180323063A1
Автор: DELMAS Jean, Verhaverbeke Steven
Принадлежит:

A method and apparatus for processing a substrate is provided. A feed stream of carbon dioxide liquid is supplied under pressure from a feed supply to a purification vessel. The carbon dioxide liquid in the purification vessel is distilled to form a purified carbon dioxide gas in a single stage distillation process. The processing method includes condensing the purified carbon dioxide gas in the condenser by heat exchange with a refrigerant from a refrigeration system to form a purified carbon dioxide liquid. The purified carbon dioxide liquid is heated to a target temperature above a critical point to change the purified carbon dioxide liquid to a supercritical carbon dioxide fluid. The processing method includes using the supercritical carbon dioxide fluid to clean a substrate disposed in a processing chamber. 1. A method of processing a substrate , comprising:providing a feed supply of a carbon dioxide liquid;supplying under pressure a feed stream of the carbon dioxide liquid from the feed supply to a purification vessel of a purification system;supplying heat to the carbon dioxide liquid in the purification vessel with a distillation heater in the purification vessel;distilling the carbon dioxide liquid in the purification vessel to form a purified carbon dioxide gas in a single stage distillation process;supplying the purified carbon dioxide gas from the purification vessel to a purification system condenser through a distillation fluid line;condensing the purified carbon dioxide gas in the purification system condenser by heat exchange with a refrigerant from a refrigeration system to form a purified carbon dioxide liquid;heating the purified carbon dioxide liquid to a target temperature above a critical point to change the purified carbon dioxide liquid to a supercritical carbon dioxide fluid; andusing the supercritical carbon dioxide fluid to clean a substrate disposed in a processing chamber.2. The method of claim 1 , wherein the carbon dioxide liquid from ...

Подробнее
Номер записи: 88
08-10-2020 дата публикации

CO2 Removal or Capture from CO2-rich Gas Mixtures

Номер: US20200318897A1
Автор: Jianguo Xu
Принадлежит: Individual

Processes for separating CO2 from a gas mixture containing one or more of hydrogen, nitrogen, argon, CO, and methane or a combination thereof is described. The processes involve, for example, cooling and partial condensation of the gas mixture, preferably by a single loop refrigeration system with a mixed refrigerant, phase separation of the partially condensed stream, and distillation of the CO2-rich liquid stream. At least a portion of the liquid CO2 produced from the processes during the off-peak electricity demand hours can be stored and then heated, vaporized, further heated, and expanded for power generation during the peak electricity demand hours, helping balance the supply and demand of electricity of the electricity grid.

Подробнее
Номер записи: 89
24-11-2016 дата публикации

PROCESS FOR PRODUCING AND PURIFYING A SYNTHESIS GAS

Номер: US20160341472A1
Автор: Duarte Gabriel Salazar, Lang Martin, Schürer Benedikt, Voss Christian
Принадлежит:

A process for producing and purifying a synthesis gas stream that contains CO- and H-produced from a hydrocarbon-containing feed in a gas production unit, COis separated from the synthesis gas stream and CO is cryogenically separated from the synthesis gas stream. COthat makes up 5% to 30% by volume in the synthesis is reduced to less than 10 ppm by volume by temperature swing adsorption. The temperature swing adsorption takes place upstream of the cryogenic separation of CO. The COis adsorbed using a disordered adsorbent bed wherein the adsorbent is cooled by means of indirect heat transfer from the adsorbent to the heat transfer medium during adsorption and the adsorbent loaded with COis heated by indirect heat transfer from the heat transfer medium to the adsorbent to effect desorption of CO. 2. The process as claimed in claim 1 , characterized in that the adsorbent is configured as a disordered adsorbent bed.3. The process as claimed in claim 1 , characterized in that the COis depleted by means of the temperature swing adsorption to less than 1 ppm by volume.4. The process as claimed in claim 1 , characterized in that the adsorbed COis desorbed at a pressure in the range from 5 bar to 90 bar claim 1 , and is recirculated to the gas production unit as starting material for synthesis gas production.5. The process as claimed in claim 1 , characterized in that the synthesis gas stream is introduced under a pressure in the range from 10 to 50 bar into the temperature swing adsorption.6. The process as claimed in claim 1 , characterized in that a further temperature swing adsorption is carried out downstream of the temperature swing adsorption in order to separate COstill present in the synthesis gas stream from the synthesis gas stream claim 1 , where COis adsorbed on an adsorbent and the adsorbent loaded with COis treated with a regenerating gas in such a way that heat of the regenerating gas is transferred directly to the absorbent to effect desorption of CO.7. The ...

Подробнее
Номер записи: 90
15-12-2016 дата публикации

AUTO-REFRIGERATED GAS SEPARATION SYSTEM FOR CARBON DIOXIDE CAPTURE AND COMPRESSION

Номер: US20160363368A1
Автор: Shafeen Ahmed, Zanganeh Kourosh
Принадлежит:

A system and method for capturing and separating carbon dioxide from mixed gas streams. The gas stream is processed in a structure including a compression module comprising a plurality of compressors, intercoolers and inter-stage condensate separators. The flow path from the compression module includes a plurality of flow separators, gas stream splitters, heat exchangers and at least a first mixer and a first expander. The gas stream is sequentially compressed and cooled to form process condensate and separate it from the compressed gas stream. The gas stream is further dried and cooled to liquefy carbon dioxide and separate it from the non-condensable portion. Selective expansion of liquid carbon dioxide streams provides cooling for the system, and further energy efficiency is achieved by selective recycling of portions of gas streams, allowing for compact equipment and economical operation, while providing for high purity product streams of carbon dioxide. 1. A method for separating carbon dioxide from a mixed gas stream , the method comprising the steps of:(a) providing a processing structure including a compression module comprising at least a plurality of compressors, a plurality of intercoolers with inter-stage condensate separators, the processing structure further including a plurality of flow separators, a plurality of gas stream splitters, a plurality of heat exchangers, a plurality of mixers, at least a first expander, and a single throttle valve;(b) delivering the mixed gas stream to the compression module, and optionally pre-treating the mixed gas stream by removing at least one of water, particulate matter, mercury and other heavy metals, hydrogen chloride, hydrogen fluoride, nitrogen oxides, sulphur oxides and other sulphur derivatives from the mixed gas stream;(c) compressing and cooling the mixed gas stream through each of the plurality of compressors and intercoolers in sequence to form a compressed gas stream and passing the compressed gas stream ...

Подробнее
Номер записи: 91
21-12-2017 дата публикации

METHOD AND APPARATUS FOR SEPARATING A FEED GAS CONTAINING AT LEAST 20 MOL % OF CO2 AND AT LEAST 20 MOL % OF METHANE, BY PARTIAL CONDENSATION AND/OR BY DISTILLATION

Номер: US20170363351A1
Автор: CAILLAT Benjamin, LECLERC Mathieu, Terrien Paul
Принадлежит:

The invention relates to a method for separating a feed gas containing at least 20 Mol % of CO2 and at least 20 Mol % of methane, by partial condensation and/or by distillation, the gas at a pressure of at least 40 bar abs, including expanding at least one portion of the feed gas in a turbine producing an expanded feed stream at a pressure of less than 90 bar abs, separating at least one portion of the expanded feed stream by partial condensation and/or by distillation thus obtaining a CO-depleted gas and a CO-enriched liquid, wherein the temperature of the expanded feed gas at the outlet of the turbine is below −56.6° C., and wherein the process does not use an external refrigeration source; and wherein the CO-depleted gas is introduced into a supplementary separation step, in order to obtain a stream that is more depleted in COand a CO-rich stream. 111.-. (canceled)12. A process for separating a feed gas containing at least 20 mol % of COand at least 20 mol % of methane , by partial condensation and/or by distillation , the gas being at a pressure of at least 40 bar abs , comprising:a) expanding at least one portion of the feed gas in a turbine producing an expanded feed stream at a pressure of less than 90 bar abs,{'sub': 2', '2, 'b) separating at least one portion of the expanded feed stream by partial condensation and/or by distillation thus obtaining a CO-depleted gas and a CO-enriched liquid,'}{'sub': 2', '2', '2, 'wherein the temperature of the expanded feed gas at the outlet of the turbine is below −56.6° C., and wherein the process does not use an external refrigeration source; and wherein the CO-depleted gas is introduced into a supplementary separation step, in order to obtain a stream that is more depleted in COand a CO-rich stream.'}13. The process of claim 12 , wherein at least one portion of the refrigeration energy is produced by the vaporization of the CO-enriched liquid.14. The process of claim 12 , wherein at least one portion of the ...

Подробнее
Номер записи: 92
28-12-2017 дата публикации

SYSTEM AND METHOD OF RECOVERING CARBON DIOXIDE FROM AN EXHAUST GAS STREAM

Номер: US20170368499A1
Автор: DiPietro Joseph Philip, Hofer Douglas Carl, Neumayer Anthony Herbert
Принадлежит:

A carbon dioxide capture system includes a first heat exchanger that exchanges heat between an exhaust stream and a lean carbon dioxide effluent stream. The carbon dioxide capture system also includes a second heat exchanger in flow communication with the first heat exchanger. The second heat exchanger is configured to cool the exhaust stream such that a condensate is formed, and the second heat exchanger is configured to channel a condensate stream for injection into the lean carbon dioxide effluent stream. A first turboexpander including a first compressor is driven by a first turbine. The first compressor is coupled in flow communication with the first heat exchanger. The first turbine is coupled in flow communication with the first heat exchanger and configured to expand the lean carbon dioxide effluent stream. The carbon dioxide capture system further includes a carbon dioxide membrane unit coupled in flow communication with the first compressor. 1. A carbon dioxide capture system comprising:a first heat exchanger configured to exchange heat between an exhaust stream and a lean carbon dioxide effluent stream;a second heat exchanger coupled in flow communication with said first heat exchanger, said second heat exchanger configured to cool the exhaust stream such that a condensate is formed, and said second heat exchanger configured to channel a condensate stream for injection into the lean carbon dioxide effluent stream; a compressor coupled in flow communication with said first heat exchanger and configured to compress the exhaust stream; and', 'a turbine coupled in flow communication with said first heat exchanger, said compressor driven by said turbine, said turbine configured to expand the lean carbon dioxide effluent stream; and, 'at least one turboexpander comprisinga carbon dioxide membrane unit coupled in flow communication with said compressor, said carbon dioxide membrane unit configured to separate the exhaust stream into the lean carbon dioxide ...

Подробнее
Номер записи: 93
28-12-2017 дата публикации

Reducing Refrigeration and Dehydration Load for a Feed Stream Entering a Cryogenic Distillation Process

Номер: US20170370640A1
Автор: Denton Robert D., Nagavarapu Ananda K., Northrop P. Scott, Valencia Jaime A.
Принадлежит:

A system for conditioning a sour gas feed stream for a cryogenic distillation tower, comprising a dehydration unit configured to separate the sour gas feed stream into a first stream comprising water and a feed stream, and a sequential cooling assembly coupled to both the dehydration unit and the cryogenic distillation tower, wherein the sequential cooling assembly comprises a first stage configured to separate the feed stream into a partially cooled feed stream and a second stream comprising acid gas, a second stage configured to cool the partially cooled feed stream into a cooled feed stream and a third stream comprising acid gas, and a cooled feed stream header coupled to a cryogenic distillation tower feed inlet, wherein the first stage, the second stage, or both are configured to send at least one of the second and third streams to a bottom section of the cryogenic distillation tower. 1. A system for conditioning a sour gas feed stream for a cryogenic distillation tower , comprising:a dehydration unit configured to separate the sour gas feed stream into a first stream comprising water and a feed stream; and a first stage configured to separate the feed stream into a partially cooled feed stream and a second stream comprising acid gas;', 'a second stage configured to cool the partially cooled feed stream into a cooled feed stream and a third stream comprising acid gas; and', 'a cooled feed stream header coupled to a cryogenic distillation tower feed inlet,', 'wherein the first stage, the second stage, or both are configured to send at least one of the second and third streams to a bottom section of the cryogenic distillation tower., 'a sequential cooling assembly coupled to both the dehydration unit and the cryogenic distillation tower, wherein the sequential cooling assembly comprises2. The system of claim 1 , wherein the first stage comprises a first separator coupled to a first cryogenic distillation tower bottom section inlet.3. The system of claim 1 , ...

Подробнее
Номер записи: 94
12-11-2020 дата публикации

Systems, Methods, and Devices for Recovering Carbon Dioxide for Reuse

Номер: US20200356944A1
Автор: George Amy
Принадлежит: Earthly Labs LLC

A device may include a plurality of controllable components, an input to receive a waste stream including carbon dioxide and volatile organic compounds, and a foam trap coupled to the input. The device may further include one or more sensors coupled to the input and configured to generate an electrical signal proportional to a concentration of at least one compound within the waste stream. The device may also include a control circuit coupled to the one or more sensors and configured to selectively activate one or more of the plurality of controllable components in response to the electrical signal. 1. A device comprising:a plurality of controllable components;{'sub': '2', 'an input to receive a waste stream including carbon dioxide (CO) and volatile organic compounds;'}a foam trap coupled to the input;one or more sensors coupled to the input, the one or more sensors including a first sensor to generate an electrical signal proportional to a concentration of at least one compound within the waste stream; and{'sub': '2', 'a control circuit coupled to the one or more sensors, the control circuit to selectively activate one or more of the plurality of controllable components in response to the electrical signal to recover the COfrom the waste stream.'}2. The device of claim 1 , wherein the control circuit includes a communication interface to send data to and receive data from a computing device through a communications link claim 1 , the data indicative of a volume of the COrecovered from the waste stream.3. The device of claim 1 , wherein the plurality of controllable components comprises one or more of:a compressor;a dehydrator;a scrubber;a chiller system; ora plurality of valves.4. The device of claim 1 , further comprising a valve including:a valve input coupled to the input;a control input coupled to the control circuit;a first valve output configured to expel the waste stream; anda second valve output coupled to the foam trap; andwherein the control circuit ...

Подробнее
Номер записи: 95
05-12-2019 дата публикации

METHOD AND INSTALLATION FOR CRYOGENIC SEPARATION OF A GASEOUS MIXTURE BY METHANE SCRUBBING

Номер: US20190368810A1
Автор: BILLY Jean, GAERTNER Axelle, Hernandez Antoine, Tsevery Jean-Marc, Victor Marie-Pascal
Принадлежит: L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

In a process for the combined production of a) a hydrogen-enriched gas and a carbon monoxide-enriched gas and/or b) a mixture of hydrogen and carbon monoxide by cryogenic distillation and scrubbing, a still liquor is extracted from a scrubbing column and sent to a stripping column, a still liquor is extracted from the stripping column and sent to a separating column for carbon monoxide and methane and a cooling fluid is used at a pressure greater than that of the head of the separating column for cooling at least one fluid extracted at an intermediate level from the scrubbing column. 115-. (canceled)16. A process for the combined production a) of a hydrogen-enriched gas and a carbon monoxide-enriched gas and/or b) a mixture of hydrogen and carbon monoxide and optionally methane by cryogenic distillation and scrubbing , in which:a. a gaseous mixture containing at least hydrogen, carbon monoxide and methane and optionally nitrogen is cooled in a heat exchangerb. the cooled mixture is sent to a scrubbing columnc. a methane-rich liquid is introduced into the scrubbing column as scrubbing liquidd. a hydrogen-enriched gas is drawn off as top gas from the scrubbing columne. a vessel liquid is drawn off from the scrubbing column and sent to a stripping columnf. a vessel liquid is drawn off from the stripping column and sent to a column for separating carbon monoxide and methaneg. at least a portion of the vessel liquid from the separation column constitutes the liquid of step iii), andh. a carbon monoxide-rich fluid is used as coolant fluid for cooling at least one fluid drawn off at an intermediate level of the scrubbing columnwherein the fluid serving to cool the at least one fluid drawn off at an intermediate level of the scrubbing column is at a greater pressure than that of the top of the separation column, and in that the fluid having served to cool the at least one fluid drawn off at an intermediate level of the scrubbing column is sent to an intermediate level of a ...

Подробнее
Номер записи: 96
03-12-2020 дата публикации

GAS SEPARATION SYSTEM WITH AUTO-REFRIGERATION AND SELECTIVE RECYCLE FOR CARBON DIOXIDE CAPTURE AND COMPRESSION

Номер: US20200378680A1
Автор: Shafeen Ahmed, Zanganeh Kourosh
Принадлежит:

A system and method for capturing and separating carbon dioxide from mixed gas streams. The gas stream is processed in a structure including a compression module comprising a plurality of compressors, intercoolers and inter-stage condensate separators. The flow path from the compression module includes a plurality of flow separators, gas stream splitters, heat exchangers and at least a first mixer and a first expander. The gas stream is sequentially compressed and cooled to form process condensate and separate it from the compressed gas stream. The gas stream is further dried and cooled to liquefy carbon dioxide and separate it from the non-condensable portion. Selective expansion of liquid carbon dioxide streams provides cooling for the system, and further energy efficiency is achieved by selective recycling of portions of gas streams, allowing for compact equipment and economical operation, while providing for high purity product streams of carbon dioxide. 1. A method for separating carbon dioxide from a mixed gas stream , the method comprising the steps of:(a) providing a processing structure including a compression module comprising at least a plurality of compressors, a plurality of intercoolers with inter-stage condensate separators, the processing structure further including a plurality of flow separators, at least one stream splitter, a plurality of heat exchangers, a plurality of mixers, at least a first expander, and a throttle valve;(b) delivering the mixed gas stream to the compression module;(c) (I) compressing and cooling the mixed gas stream through each of the plurality of compressors and intercoolers in sequence to form a compressed gas stream;(c) (II) generating output streams from each of the plurality of heat exchangers and the first expander, the output streams each including liquid carbon dioxide and a gaseous stream;(d) removing the liquid carbon dioxide from each of the said output streams in first, second, and third flow separators to ...

Подробнее
Номер записи: 97
10-12-2020 дата публикации

METHOD AND SYSTEM FOR TREATING A FLOW BACK FLUID EXITING A WELL SITE

Номер: US20200385641A1
Автор: Burgers Kenneth L., DRNEVICH RAYMOND F., Shah Minish M., Thompson David R.
Принадлежит:

The present invention relates to a method and system for treating a flow back fluid exiting a well site following stimulation of a subterranean formation. More specifically, the invention relates to processing the flow back fluid, and separating into a carbon dioxide rich stream and a carbon dioxide depleted stream, and continuing the separation until the carbon dioxide concentration in the flow back stream until the carbon dioxide concentration in the flow back gas diminishes to a point selected in a range of about 50-80 mol % in carbon dioxide concentration, after which the lower concentration carbon dioxide flow back stream continues to be separated into a carbon dioxide rich stream which is routed to waste or flare, and a hydrocarbon rich stream is formed. 110-. (canceled)11. A system for processing the flow back fluid from a well site following stimulation of a subterranean formation , comprises:a pretreatment unit to receive and process the flow back fluid from the well site and remove any one of water, solid particulates, liquid hydrocarbons, hydrogen sulfides or a combination thereof;a membrane unit downstream of the pretreatment unit to receive the pretreated flow back fluid therefrom and separate the pretreated flow back fluid into a carbon dioxide rich permeate stream and a carbon dioxide depleted retentate stream;a permeate cooling unit to receive the carbon dioxide rich permeate stream and reduce the temperature of the stream to a temperature ranging from about −40 to 20° F.; anda phase separator to receive the lower temperature carbon dioxide rich permeate stream from the permeate cooling unit and separate the stream into a first liquid stream of predominantly carbon dioxide and a first gaseous stream enriched in methane.12. The system of claim 11 , further comprising a second phase separator to receive the first liquid stream of predominantly carbon dioxide and further separate into a second liquid carbon dioxide product stream and a second gaseous ...

Подробнее
Номер записи: 98
26-12-2019 дата публикации

PURIFICATION PROCESS FOR PRODUCTION OF ULTRA HIGH PURITY CARBON MONOXIDE

Номер: US20190390901A1
Автор: Milner David
Принадлежит: LINDE AKTIENGESELLSCHAFT

Methods and apparatus for the production of ultra high purity carbon monoxide having a carbon dioxide content of 0.1 ppm or less is disclosed. Carbon dioxide is removed from a product stream using a reversing heat exchanger to freeze the carbon dioxide out of the product stream, This provides the ultra high purity carbon monoxide product which meets the requirements of the electronic industry applications. 1. A method of producing ultra high purity carbon monoxide characterized in that a carbon monoxide stream is cooled in a reversing heat exchanger for freezing out removing carbon dioxide and whereas the gas stream is afterwards directed to a snow trap for removing solid particles and Whereas the gas stream is after the snow trap direct to a liquefier and hydrogen removal vessel , wherein the carbon monoxide is liquefied and hydrogen remains in a gaseous state and is separated.2. The method of producing ultra high purity carbon monoxide according to claim 1 , characterized in that as cooling agent in the reversing heat exchanger claim 1 , in the snow trap and in the liquefier and hydrogen removal vessel liquid nitrogen is used.3. The method of producing ultra high purity carbon monoxide according to wherein the liquid ultra high purity carbon monoxide is compressed by a diaphragm compressor or a cryogenic liquid pump and stored in gas cylinders.4. The method of producing ultra high purity carbon monoxide according to claim 1 , characterized in that the content of carbon dioxide and hydrogen in the ultra high purity carbon monoxide is 0.1 ppm or less.5. An apparatus for producing ultra high purity carbon monoxide characterized in that the apparatus comprises a heat exchanger claim 1 , which is connected to a snow trap claim 1 , which is also connected to a liquefier and hydrogen removal vessel.6. The apparatus for producing ultra high purity carbon monoxide according to claim 5 , characterized in that the heat exchanger claim 5 , the snow trap claim 5 , the ...

Подробнее
Номер записи: 99
15-10-2009 дата публикации

Processes for the Separation of Methane from a Gas Stream

Номер: US20090259080A1
Автор: Earl T. Robinson, Francis S. Lau, Pattabhi K. Raman
Принадлежит: Greatpoint Energy Inc

Processes for the catalytic conversion of a carbonaceous composition into a gas stream comprising methane are provided. In addition, the processes provide for the generation of a hydrogen-enriched gas stream and, optionally, a carbon monoxide-enriched gas stream, which can be mixed or used separately as an energy source for subsequent catalytic gasification processes.

Подробнее
Номер записи: 100