公开(公告)号：US20230044196A1

公开(公告)日：2023-02-09

申请号：US17788971

申请日：2020-12-21

申请人： Alain BRIGLIA ,  L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude

发明人： Alain BRIGLIA ,  Eric DAY ,  Michael WAKIM

IPC分类号： C25B1/04 ,  C25B9/67 ,  C01B13/02 ,  C01B13/16 ,  C01B3/04 ,  C02F1/20 ,  C02F1/26

摘要： A device for preparing high-purity hydrogen and/or oxygen by electrolyzing water, including an electrolyzer and a degasser for degassing desalted water. The degasser is located at the upstream of the electrolyzer. After desalted water is heated and degassed in the degasser, the content of gaseous impurities, particularly argon, can be reduced to several ppb (weight ratio). The hydrogen and oxygen generated after the desalted and degassed water is electrolyzed in the electrolyzer also contain an extremely small amount of argon, so that the requirements in semiconductor industry are met. Also involved is a method of preparing high-purity hydrogen and/or oxygen by using the device.

公开(公告)号：US20230090158A1

公开(公告)日：2023-03-23

申请号：US17946438

申请日：2022-09-16

申请人： L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude

发明人： Yong-Shun ZHANG ,  Alain BRIGLIA ,  Xian-Biao ZHENG

IPC分类号： F25J3/04

摘要： The present disclosure provides a method for cryogenic air separation. In the method, part (b2) of the air (b) is compressed in warm booster (7), cooled in heat exchanger (2) and then divided in two, one part (c1) being compressed in a cold booster(9) driven by one turboexpander (11) in which the other part (c2) of air (c) is expanded, and another part of the feed air is not boosted but is expanded in another turboexpander (6) which drives the warm booster (7). The present disclosure also provides an apparatus for cryogenic air separation.

公开(公告)号：US20220282914A1

公开(公告)日：2022-09-08

申请号：US17630433

申请日：2019-07-26

申请人： Alain BRIGLIA ,  Fengjie XUE ,  Jianwei CAO ,  Baptiste FARA ,  L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges Claude

发明人： Alain BRIGLIA ,  Fengjie XUE ,  Jianwei CAO ,  Baptiste FARA

IPC分类号： F25J3/04

摘要： An apparatus for the separation of air by cryogenic distillation comprises a column system, a heat exchanger, a turbine, means for sending compressed and purified air at a first pressure to be cooled at the first pressure in the heat exchanger, means for sending a first gaseous stream having a nitrogen content at least that of air to be cooled and liquefied or pseudo liquefied in the heat exchanger to form a liquefied stream, means for sending at least part of the liquefied stream to be warmed and vaporized in the heat exchanger to a first intermediate temperature of the heat exchanger to form a vaporized stream, means for removing the vaporized stream from an intermediate section of the heat exchanger, a conduit for sending the vaporized stream to be expanded, in the turbine to form an expanded stream, a conduit for sending at least part of the expanded stream to the column system, a conduit for sending a second gaseous stream having the same nitrogen content as the first stream to be cooled in the heat exchanger, means for removing at least part of the second gaseous stream from an intermediate section of the heat exchanger at a second intermediate temperature and sending the second gaseous stream to the turbine to be expanded with the vaporized stream.

公开(公告)号：US20180372241A1

公开(公告)日：2018-12-27

申请号：US15775282

申请日：2015-11-10

申请人： Alain BRIGLIA ,  Jianwei LI ,  L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

发明人： Alain BRIGLIA ,  Jianwei LI

IPC分类号： F16K43/00 ,  F17C13/04 ,  F16K27/02

摘要： A press-fit in situ retrofit assembly for a top entry valve and a method thereof are disclosed. The assembly includes an annular conduit (201) including a segment (202) of reduced outside diameter and a shoulder (203) on the exterior surface at the proximal end (204), and is configured to conform with an interior surface (205) of a valve seat (206) at the distal end (207). A valve body extension (208) with an interior annular region (301), and an inlet port (209) fluidically connected to the annular region (301). A gland packing push plate (211) is configured to allow the annular conduit (201) to pass through thereby forming an outlet port (212). And a thrust plate (403) is attached to the thrust screws (401). The thrust plate (403) allows the segment (202) of reduced outside diameter at the proximal end (204) of the annular conduit (201) to pass through, with the thrust plate (403) seating on the shoulder (203). The assembly and the method allow the removal of a portion of the fluid from the cold box for downstream processing or manipulation as desired.

公开(公告)号：US20210071948A1

公开(公告)日：2021-03-11

申请号：US16958809

申请日：2017-12-29

申请人： Bowei ZHAO ,  Alain BRIGLIA ,  Fengjie XUE ,  L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

发明人： Bowei ZHAO ,  Alain BRIGLIA ,  Fengjie XUE

IPC分类号： F25J3/04

摘要： A method and a device for producing an air product based on cryogenic rectification; after being cooled by a main heat exchanger, raw material air and nitrogen compressed by means of a compressor are sent to a rectification system for low temperature separation. In the rectification system, products such as oxygen and nitrogen are obtained by means of low temperature separation, and oxygen-enriched liquid air is obtained at or near the bottom of a rectification tower. The oxygen-enriched liquid air or liquid-state air in the rectification system is sent out after being raised to a target pressure by means of a low temperature liquid air pump; air products of various pressures can be produced by means of selecting low temperature liquid air pumps with different lifts or by connecting in series different amounts of low temperature liquid air pumps. The present method can avoid the need to arrange additional air compressors, entirely changing the method for producing medium and high pressure air products in a nitrogen circulation process, and importantly can reduce production costs significantly whilst having greater flexibility. In addition, the present method can increase the oxygen extraction rate of an apparatus, thereby improving the energy efficiency level.

公开(公告)号：US20200056840A1

公开(公告)日：2020-02-20

申请号：US16610205

申请日：2017-05-03

申请人： Alain BRIGLIA ,  Remy KURTZ ,  L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude

发明人： Alain BRIGLIA ,  Remy KURTZ

IPC分类号： F25J3/04 ,  E04H5/10 ,  F28F3/02 ,  F25D3/10

摘要： Disclosed are a cold box structure with cold box panels partly built-in and an installation method therefor. The cold box structure is mainly applied to plate-fin heat exchangers, and in particular to high-pressure aluminum plate-fin heat exchangers. The cold box structure comprises a base, a cold box support frame, four cold box panels, and a cold box top plate, and a plate-fin heat exchanger is placed inside the cold box. Some of or all the four cold box panels can be placed inside the cold box support frame as needed. The cold box structure can protect the cold box support frame from being damaged by cryogenic steam ejected from the plate fin-heat exchanger due to leakage, and further enables the discovering of leakage situations of the plate-fin heat exchanger from outer surfaces of the cold box panels in a timely manner.

公开(公告)号：US20210140708A1

公开(公告)日：2021-05-13

申请号：US16958454

申请日：2017-12-28

申请人： Bowei ZHAO ,  Alain BRIGLIA ,  Fengjie XUE ,  L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

发明人： Bowei ZHAO ,  Alain BRIGLIA ,  Fengjie XUE

IPC分类号： F25J3/04

摘要： The present invention discloses a cryogenic rectification process-based method for producing an air product, and an air separation system. By adding an air product outlet line and a liquid air booster pump to an existing cryogenic rectification process apparatus, the existing rectification apparatus is used to prepare oxygen-enriched liquid air by pressurizing, cooling and liquefying feed air; and moreover, a high-pressure or ultra-high-pressure air product can be prepared according to customer requirements by adjusting the ratio of the feed air to the oxygen-enriched liquid air, and pressurizing the mixture to a target pressure by the liquid air booster pump before being vaporized via heat exchange with a gas or liquid product produced by rectification through a heat exchange apparatus. According to the present invention, when gas or liquid products of oxygen and nitrogen are produced by means of rectification, a high-pressure or ultra-high-pressure air product can be provided according to customer requirements, and there is no need to provide an additional air compressor or passively increase the discharge pressure of the air booster, so that the production costs are greatly reduced and the energy efficiency level is improved. The method of the present invention can also improve the stability of devices, especially when a small amount of high-pressure/ultra-high-pressure air product needs to be produced.

公开(公告)号：US20210055049A1

公开(公告)日：2021-02-25

申请号：US16958286

申请日：2017-12-28

申请人： Bowei ZHAO ,  Alain BRIGLIA ,  L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude

发明人： Bowei ZHAO ,  Alain BRIGLIA

IPC分类号： F25J3/04

摘要： An air separation apparatus and process, which produces gaseous oxygen and/or nitrogen products at an elevated pressure through internal compression of respective liquid products, are disclosed. Split-core main heat exchangers are employed to warm up product streams generated in an air rectification unit against 1) a main feed air stream in the low-pressure heat exchanger and 2) at least one boosted pressure air stream in the high-pressure exchanger. Because the boosted pressure air stream is at a higher pressure and temperature than the main feed air stream, after separate heat exchange in the split main heat exchangers, the subsidiary waste nitrogen stream exiting the high-pressure heat exchanger is also warmer than the subsidiary waste nitrogen stream exiting the low-pressure heat exchanger. The warmer waste nitrogen stream is fed into the air purification unit for regeneration purposes and the cooler waste nitrogen stream is introduced into the nitrogen water tower to perform cooling duty. The two subsidiary waste nitrogen streams are also connected on the warm side of the main heat exchangers to allow flexible distribution of the flow.