[특허]Ten bed pressure swing adsorption process operating in normal and turndown modes

Praxair Technology, Inc.

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Ten bed pressure swing adsorption process operating in normal and turndown modes

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-053/047
미국특허분류(USC)	095/096;
출원번호	US-0004731 (2011-01-11)
등록번호	US-8435328 (2013-05-07)
발명자 / 주소	Baksh, Mohamed S. A. Simo, Marian
출원인 / 주소	Praxair Technology, Inc.
대리인 / 주소	Schwartz, lurie A.
인용정보	피인용 횟수 : 1 인용 특허 : 111

초록

The present invention relates to a ten bed pressure swing adsorption (PSA) system utilizing new and advanced cycles to obtain enhanced hydrogen recovery from a hydrogen containing feed gas (i.e., synthesis gas). More specifically, through the newly developed process cycles, the ten bed PSA system is capable of matching the hydrogen recovery of conventional twelve bed PSA systems designed to manufacture 100 million standard cubic feet per day of gas.

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1. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a ten bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has twenty steps including five bed-to-bed equalizations steps, while three of the beds are in production. 2. The pressure swing adsorption process of claim 1, in accordance to the following cycle chart: BedStep:#12345678910111213141516171819201A1A2A3A4A5A6E1E2E3E4E5PPGBDPGE5′E4′E3′E2′E1′PP2E1′PPA1A2A3A4A5A6E1E2E3E4E5PPGBDPGE5′E4′E3′E2′3E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4E5PPGBDPGE5′E4′4E5′E4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4E5PPGBDPG5BDPGE5′E4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4E5PPG6E5PPGBDPGE5′E4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E47E3E4E5PPGBDPGE5′E4′E3′E2′E1′PPA1A2A3A4A5A6E1E28E1E2E3E4E5PPGBDPGE5′E4′E3′E2′E1′PPA1A2A3A4A5A69A5A6E1E2E3E4E5PPGBDPGE5′E4′E3′E2′E1′PPA1A2A3A410A3A4A5A6E1E2E3E4E5PPGBDPGE5′E4′E3′E2′E1′PPA1A2Wherein:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepA5=Fifth Adsorption StepA6=Sixth Adsorption StepE1=First Equalization DownE2=Second Equalization DownE3=Third Equalization DownE4=Fourth Equalization DownE5=Fifth Equalization DownPPG=Provide Purge GasBD=BlowdownPG=Purge using gas from PPG stepE5′=Equalization Up (using gas from E5 step)E4′=Equalization Up (using gas from E4 step)E3′=Equalization Up (using gas from E3 step)E2′=Equalization Up (using gas from E2 step)E1′=Equalization Up (using gas from E1 step)PP=Product Pressurization. 3. The pressure swing adsorption process of claim 1, wherein said less strongly adsorbable product gas is hydrogen. 4. The pressure swing adsorption process of claim 1, wherein the supply feed gas containing one or more strongly adsorbable component is selected from the group consisting of hydrocarbons, carbon dioxide, carbon monoxide, argon, nitrogen and water vapor. 5. The pressure swing adsorption process of claim 1, wherein each adsorbent bed contains alumina, carbon and zeolite material configured in layers disposes in this particular order for feed gas processing. 6. The pressure swing adsorption process of claim 5, where the carbon and zeolite layers are each subdivided into two layers with different particle size. 7. The pressure swing adsorption process of claim 6, where the first of the subdivided carbon layers encountered by the supply feed gas has a particle size of about 0.5 to 1.5 mm and an affinity for the carbon dioxide impurity. 8. The pressure swing adsorption process of claim 6, where the second of the subdivided carbon layers encountered by the supply feed gas has a particle size of about 2.0 to 3.0 mm and an affinity for the methane impurities. 9. The pressure swing adsorption process of claim 6, where the first of the subdivided zeolite layers encountered by the supply feed gas has a particle size of about 0.5 to 2.0 mm and an affinity for the carbon monoxide impurity. 10. The pressure swing adsorption process of claim 6, where the second of the subdivided zeolite layers encountered by the supply feed gas has a particle size of about 2.0 to 3.0 mm and an affinity for the nitrogen impurity. 11. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a nine bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has eighteen steps including four bed-to-bed equalizations steps, while three of the beds are in production, in accordance to the following cycle chart: BedStep:#1234567891011121314151617181A1A2A3A4A5A6E1E2E3E4PPGBDPGE4′E3′E2′E1′PP2E1′PPA1A2A3A4A5A6E1E2E3E4PPGBDPGE4′E3′E2′3E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4PPGBDPGE4′4PGE4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4PPGBD5PPGBDPGE4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E46E3E4PPGBDPGE4′E3′E2′E1′PPA1A2A3A4A5A6E1E27E1E2E3E4PPGBDPGE4′E3′E2′E1′PPA1A2A3A4A5A68A5A6E1E2E3E4PPGBDPGE4′E3′E2′E1′PPA1A2A3A49A3A4A5A6E1E2E3E4PPGBDPGE4′E3′E2′E1′PPA1A2wherein:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepA5=Fifth Adsorption StepA6=Sixth Adsorption StepE1=First Equalization DownE2=Second Equalization DownE3=Third Equalization DownE4=Fourth Equalization DownPPG=Provide Purge GasBD=BlowdownPG=Purge using gas from PPG stepE4′=Equalization Up (using gas from E4 step)E3′=Equalization Up (using gas from E3 step)E2′=Equalization Up (using gas from E2 stepE1′=Equalization Up (using gas from E1 step)PP=Product Pressurization. 12. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a eight bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has sixteen steps including three bed-to-bed equalizations steps, while three of the beds are in production. 13. The pressure swing adsorption process of claim 12, in accordance to the following cycle chart: BedStep:#123456789101112131415161A1A2A3A4A5A6E1E2E3PPG1BDPG1E3′E2′E1′PP2E1′PPA1A2A3A4A5A6E1E2E3PPG1BDPG1E3′E2′3E3′E2′E1′PPA1A2A3A4A5A6E1E2E3PPG1BDPG14BDPG1E3′E2′E1′PPA1A2A3A4A5A6E1E2E3PPG15E3PPG1BDPG1E3′E2′E1′PPA1A2A3A4A5A6E1E26E1E2E3PPG1BDPG1E3′E2′E1′PPA1A2A3A4A5A67A5A6E1E2E3PPG1BDPG1E3′E2′E1′PPA1A2A3A28A3A4A5A6E1E2E3PPG1BDPG1E3′E2′E1′PPA1A2where:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepA5=Fifth Adsorption StepA6=Sixth Adsorption StepE1=First Equalization DownE2=Second Equalization DownE3=Third Equalization DownPPG=Provide Purge GasBD=BlowdownPG=Purge using gas from PPG stepE3′=Equalization Up (using gas from E3 step)E2′=Equalization Up (using gas from E2 step)E1′=Equalization Up (using gas from E1 step)PP=Product Pressurization. 14. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a seven bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has twenty one steps including three bed-to-bed equalizations steps, while two of the beds are in production, in accordance to the following cycle chart: BedStep:# 123456 78910111 A1A2A3A4A5A6 E1E1E2PPG1E32 E1′E1′PPA1A2A3 A4A5A6E1E13 PG1E3′E2′E1′E1′PP A1A2A3A4A54 BD1BD2PG2PG1E3′E2′ E1′E1′PPA1A25 PPG1E3PPG2BD1BD2PG2 PG1E3′E2′E1′E1′6 E1E1E2PPG1E3PPG2 BD1BD2PG2PG1E3′7 A4A5A6E1E1E2 PPG1E3PPG2BD1BD2BedStep:#12 1314 15161718 1920 211PPG2 BD1BD2 PG2PG1E3′E2′ E1′E1′ PP2E2 PPG1E3 PPG2BD1BD2PG2 PG1E3′ E2′3A6 E1E1 E2PPG1E3PPG2 BD1BD2 PG24A3 A4A5 A6E1E1E2 PPG1E3 PPG25PP A1A2 A3A4A5A6 E1E1 E26E2′ E1′E1′ PPA1A2A3 A4A5 A67PG2 PG1E3′ E2′E1′E1′PP A1A2 A3where:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepA5=Fifth Adsorption StepA6=Sixth Adsorption StepE1=First Equalization DownE2=Second Equalization DownPPG1=First Provide Purge Gas StepE3=Third Equalization DownPPG2=Second Provide Purge Gas StepBD1=First BlowdownBD2=Second BlowdownPG2=Purge step using gas from PPG2 StepPG1=Purge step using gas from PPG1 StepE3′=Equalization Up (using gas from E3 step)E2′=Equalization Up (using gas from E2 step)E1′=Equalization Up (using gas from E1 step)PP=Product Pressurization. 15. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a five bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has fifteen steps including two bed-to-bed equalizations steps, while two of the beds are in production. 16. The pressure swing adsorption process of claim 15, in accordance to the following cycle chart: BedStep:#1234567891011121314151A1A2A3A4A5/PP1A6/PP2E1PPGE2BDPGE2′E1′PP1PP22E1′PP1PP2A1A2A3A4A5/PP1A6/PP2E1PPGE2BDPGE2′3BDPGE2′E1′PP1PP2A1A2A3A4A5/PP1A6/PP2E1PPGE24E1PPGE2BDPGE2′E1′PP1PP2A1A2A3A4A5/PP1A6/PP25A4A5/PP1A6/PP2E1PPGE2BDPGE2′E1′PP1PP2A1A2A3where:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepA5/PP1=Fifth Adsorption Step/First Product PressurizationA6/PP2=Sixth Adsorption Step/Second Product PressurizationE1=First Equalization DownPPG=Provide Purge GasE2=Second Equalization DownBD=BlowdownPG=Purge using gas from PPG stepE2′=Equalization Up (using gas from E2 step)E1′=Equalization Up (using gas from E1 step)PP1=First Product PressurizationPP2=Second Product Pressurization. 17. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a ten bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has twenty steps including five bed-to-bed equalizations steps, while two of the beds are in production. 18. The pressure swing adsorption process of claim 17, in accordance to the following cycle chart: BedStep:#12345678910111213141516171819201A1A2A3A4E1E2E3E4E5PPG1PPG2BDPG2PG1E5′E4′E3′E2′E1′PP2E1′PPA1A2A3A4E1E2E3E4E5PPG1PPG2BDPG2PG1E5′E4′E3′E2′3E3E2′E1′PPA1A2A3A4E1E2E3E4E5PPG1PPG2BDPG2PG1E5′E4′4E5′E4′E3′E2′E1′PPA1A2A3A4E1E2E3E4E5PPG1PPG2BDPG2PG15PG2PG1E5′E4′E3′E2′E1′PPA1A2A3A4E1E2E3E4E5PPG1PPG2BD6PPG2BDPG2PG1E5′E4′E3′E2′E1′PPA1A2A3A4E1E2E3E4E5PPG17E5PPG1PPG2BDPG2PG1E5′E4′E3′E2′E1′PPA1A2A3A4E1E2E3E48E3E4E5PPG1PPG2BDPG2PG1E5′E4′E3′E2′E1′PPA1A2A3A4E1E29E1E2E3E4E5PPG1PPG2BDPG2PG1E5′E4′E3′E2′E1′PPA1A2A3A410A3A4E1E2E3E4E5PPG1PPG2BDPG2PG1E5′E4′E3′E2′E1′PPA1A2where:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepE1=First Equalization DownE2=Second Equalization DownE3=Third Equalization DownE4=Fourth Equalization DownE5=Fifth Equalization DownPPG1=First Provide Purge Gas StepPPG2=Second Provide Purge Gas StepBD=BlowdownPG2=Purge step using gas from PPG2 StepPG1=Purge step using gas from PPG1 stepE5′=Equalization Up (using gas from E5 step)E4′=Equalization Up (using gas from E4 step)E3′=Equalization Up (using gas from E3 step)E2′=Equalization Up (using gas from E2 step)E1′=Equalization Up (using gas from E1 step)PP=Product Pressurization. 19. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a ten bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has twenty steps including four bed-to-bed equalizations steps, while three of the beds are in production, in accordance to the following cycle chart: BedStep:#12345678910111213141516171819201A1A2A3A4A5A6E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PP2E1′PPA1A2A3A4A5A6E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′3E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4PPG1PPG2BDPG2PG1E4′4PG1E4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4PPG1PPG2BDPG25BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E4PPG1PPG26PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4A5A6E1E2E3E47E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4A5A6E1E28E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4A5A69A5A6E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A410A3A4A5A6E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2where:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepA5=Fifth Adsorption StepA6=Sixth Adsorption StepE1=First Equalization DownE2=Second Equalization DownE3=Third Equalization DownE4=Fourth Equalization DownPPG1=First Provide Purge Gas StepPPG2=Second Provide Purge Gas StepBD=BlowdownPG2=Purge step using gas from PPG2 stepPG1=Purge step using gas from PPG1 stepE4′=Equalization Up (using gas from E4 step)E3′=Equalization Up (using gas from E3 step)E2′=Equalization Up (using gas from E2 step)E1′=Equalization Up (using gas from E1 step)PP=Product Pressurization. 20. A pressure swing adsorption process for separating a pressurized supply feed gas containing one or more strongly adsorbable component from at least one less strongly adsorbable product gas component in a nine bed pressure swing adsorption system to produce a continuous stream of product gas enriched in the less strongly adsorbable component and a continuous stream of offgas that is enriched in strongly adsorbable components, wherein the process cycle has eighteen steps including four bed-to-bed equalizations steps, while two of the beds are in production. 21. The pressure swing adsorption process of claim 20, in accordance to the following cycle chart: BedStep:#1234567891011121314151617181A1A2A3A4E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PP2E1′PPA1A2A3A4E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′3E3′E2′E1′PPA1A2A3A4E1E2E6E4PPG1PPG2BDPG2PG1E4′4PG1E4′E3′E2′E1′PPA1A2A3A4E1E2E3E4PPG1PPG2BDPG25BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4E1E2E3E4PPG1PPG26PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4E1E2E3E47E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A4E1E28E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2A3A49A3A4E1E2E3E4PPG1PPG2BDPG2PG1E4′E3′E2′E1′PPA1A2where:A1=First Adsorption StepA2=Second Adsorption StepA3=Third Adsorption StepA4=Fourth Adsorption StepE1=First Equalization DownE2=Second Equalization DownE3=Third Equalization DownE4=Fourth Equalization DownPPG1=First Provide Purge Gas StepPPG2=Second Provide Purge Gas StepBD=BlowdownPG2=Purge step using gas from PPG2 stepPG1=Purge step using gas from PPG1 stepE4′=Equalization Up (using gas from E4 step)E3′=Equalization Up (using gas from E3 step)E2″=Equalization Up (using gas from E2 step)E1″=Equalization Up (using gas from E1 step)PP=Product Pressurization.

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이 특허를 인용한 특허 (1)

Weist, Jr., Edward Landis; Wu, Dingjun; Xu, Jianguo; Herb, Blaine Edward; Hoke, Jr., Bryan Clair, Pressure swing adsorption process.

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Ten bed pressure swing adsorption process operating in normal and turndown modes

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Ten bed pressure swing adsorption process operating in normal and turndown modes

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