IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0504501
(2003-02-07)
|
등록번호 |
US-7306651
(2007-12-11)
|
우선권정보 |
FR-02 01915(2002-02-15) |
국제출원번호 |
PCT/FR03/000403
(2003-02-07)
|
§371/§102 date |
20050222
(20050222)
|
국제공개번호 |
WO03/068366
(2003-08-21)
|
발명자
/ 주소 |
- Cieutat,Denis
- De Souza,Guillaume
- Moreau,Serge
- Tromeur,Pascal
|
출원인 / 주소 |
- L'Air Liquide, Soci챕t챕 Anonyme 횪 Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Proc챕d챕s Georges Claude
|
인용정보 |
피인용 횟수 :
19 인용 특허 :
9 |
초록
▼
A method of treatment of a gas mixture which contains H2, H2S and possibly of other impurities, such as hydrocarbons. The treatment method is aimed at purifying the hydrogen mixture without incurring a overall pressure loss. The method according to the invention uses a device for pressure swing adso
A method of treatment of a gas mixture which contains H2, H2S and possibly of other impurities, such as hydrocarbons. The treatment method is aimed at purifying the hydrogen mixture without incurring a overall pressure loss. The method according to the invention uses a device for pressure swing adsorption where the device includes an integrated compressor. In each adsorber of the device a pressure swing cycle is carried out which includes the steps of: adsorption, decompression, purge, and repressurization.
대표청구항
▼
What is claimed is: 1. A method which may be used for treating a gas mixture at an initial pressure, wherein said gas mixture comprises H2S and H2, comprising treating said gas mixture with a treatment device, wherein said device comprises a pressure swing adsorption (PSA) unit with an integrated c
What is claimed is: 1. A method which may be used for treating a gas mixture at an initial pressure, wherein said gas mixture comprises H2S and H2, comprising treating said gas mixture with a treatment device, wherein said device comprises a pressure swing adsorption (PSA) unit with an integrated compressor and wherein each adsorber of said unit comprises a pressure swing cycle, wherein said cycle comprises: a) an adsorption phase, wherein said adsorption phase comprises: 1) contacting said gas mixture with the adsorber bed so as to adsorb the different components of said gas mixture; and 2) producing at the top of said bed, a gas consisting essentially of hydrogen; b) a decompression phase, wherein said decompression phase comprises: 1) introducing a recycle gas to said bed, wherein said recycle gas is compressed by said compressor to a second pressure which is less than said initial pressure; and 2) producing a PSA waste gas; c) a purge phase, wherein said purge phase comprises producing a purge gas; and d) a repressurization phase. 2. The method of claim 1, wherein said recycle gas comprises at least one member selected from the group consisting of: a) said purge gas; and b) said PSA waste gas. 3. The method of claim 1, wherein said gas mixture comprises a stream from a hydrodesulfurization process. 4. The method of claim 1, wherein said gas consisting essentially of hydrogen has a pressure about 1 bar less than said initial pressure. 5. The method of claim 1, wherein said gas comprises a purity greater than about 97% mol. 6. The method of claim 3, further comprising recycling said gas into said hydrodesulfurization process. 7. The method of claim 1, wherein said decompression phase further comprises decompressing said bed. 8. The method of claim 7, wherein said decompression phase further comprises: a) producing a second gas stream consisting essentially of hydrogen; and b) using said second gas stream, wherein said using comprises at least one member selected from the group consisting of: 1) using during said purge phase; and 2) using to recompress a downstream adsorbent bed during said repressurization phase. 9. The method of claim 8, wherein said production of said second gas stream corresponds to said introduction of said recycle gas. 10. The method of claim 1, further comprising treating a membrane gas in a hydrogen-permeable membrane prior to using said membrane gas as said recycle gas, wherein said membrane gas further comprises at least one member selected from the group consisting of: a) said purge gas; and b) said waste gas. 11. The method of claim 1, wherein said gas mixture comprises a high-pressure gas mixture from a high-pressure separation unit of a hydrodesulfurization unit. 12. The method of claim 11, wherein said high-pressure gas mixture is from the intake of the recycling compressor of said hydrodesulfurization unit. 13. The method of claim 3, wherein said gas mixture comprises a compressed recycling gas delivered by the recycling compressor of a hydrodesulfurization unit. 14. The method of claim 3, wherein said gas mixture comprises a mixture of said recycling gas and the make-up gas of a hydrodesulfurization unit. 15. A method for the hydrogenation and treatment of a hydrocarbon feed, comprising: a) creating products by hydrogenating said hydrocarbon feed; b) obtaining a gas phase consisting of essentially H2, H2S and light hydrocarbons, by condensing said products; c) treating said gas phase by with a treatment device, wherein said device comprises a pressure swing adsorption (PSA) unit with an integrated compressor and wherein each adsorber of said unit comprises a pressure swing cycle, wherein said cycle comprises: 1) an adsorption phase, wherein said adsorption phase comprises: i) contacting said gas phase with the adsorber bed so as to adsorb the different components of said gas phase; and ii) producing at the top of said bed, a gas consisting essentially of hydrogen; 2) a decompression phase, wherein said decompression phase comprises: i) introducing a recycle gas to said bed, wherein said recycle gas is compressed by said compressor to a second pressure which is less than said initial pressure of said gas phase; and ii) producing a PSA waste gas; 3) a purge phase, wherein said purge phase comprises producing a purge gas; and 4) a repressurization phase; and d) recycling said gas produced at said top of bed into said hydrocarbon feed.
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