IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0250430
(2001-12-21)
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우선권정보 |
FR-2000-017319 (2000-12-29) |
국제출원번호 |
PCT/FR01/04140
(2001-12-21)
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국제공개번호 |
WO02/05326
(2002-07-11)
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발명자
/ 주소 |
- Guillard, Alain
- Peyron, Jan-Marc
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출원인 / 주소 |
- L'Air Liquide, Societe Anonyme pour l'Etude et, l'Exploitation des Procedes Georges Claude
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
18 |
초록
A method comprising two adsorbers which follow each a phase-shifted cycle successively consisting in an adsorption phase, at high pressure of the cycle, and a regeneration phase, ending in repressurizing of the adsorber.
대표청구항
▼
1. A method for treating a gas by adsorption, utilizing two adsorbers (R 1 , R 2 ), comprising the steps of:i) shifting said adsorbers successively in an adsorption phase, at a high cycle pressure;ii) regenerating said adsorbers with depressurization;iii) repressurizing said adsorbers; andiv) parall
1. A method for treating a gas by adsorption, utilizing two adsorbers (R 1 , R 2 ), comprising the steps of:i) shifting said adsorbers successively in an adsorption phase, at a high cycle pressure;ii) regenerating said adsorbers with depressurization;iii) repressurizing said adsorbers; andiv) paralleling said adsorbers wherein the paralleling step results in a total gas stream treatment that comprises the following steps:a) treating a first gas flow by at least one adsorber (R 1 ) ending its adsorption phase; andb) treating a second gas flow to be treated by at least one other adsorber (R 2 ) starting its adsorption phase,wherein said paralleling step is maintained for either a predetermined time interval longer than the switching time of the valves controlling the adsorbers establishing said paralleling step, or as long as the difference in temperature between that of the total stream and that of at least one of said flows is greater than a predetermined temperature threshold. 2. The method according to claim 1, wherein said predetermined time interval is at least about 1 minute. 3. The method according to claim 2, wherein said predetermined time interval is at least about 2 minutes. 4. The method according to claim 1, wherein the first flow rate is varied at least partially during the paralleling step. 5. The method according to claim 1, wherein the second flow rate is varied at least partially during the paralleling step. 6. The method according to claim 1, wherein the second flow rate is varied in an opposite manner to the variations of the first flow rate. 7. The method according to claim 1, wherein said gas is air and the treatment comprises purification of air from water and CO 2 . 8. The method according to claim 1, wherein said adsorber is repressurized via a gas repressurization mixture comprising at least one gas from air and a fluid which is richer in oxygen than air. 9. The method according to claim 8, wherein said gas repressurization mixture comprises an air that is either dry, and/or decarbonated. 10. The method according to claim 1, wherein if said adsorption occurs at a maximum pressure of about 7 bar, the paralleling step is held for at least about 1 minute and/or with a temperature threshold of about 20° C. 11. The method according to claim 10, wherein the paralleling step is held for at least about 2 minutes and/or with a temperature threshold of about 20° C. 12. The method according to claim 11, wherein the paralleling step is held for at least about 2 minutes and/or with a temperature threshold of about 15° C. 13. The method according to claim 12, wherein the paralleling step is held for at least about 5 minutes and/or with a temperature threshold of about 15° C. 14. The method according to claim 13, wherein the paralleling step is held for at least about 5 minutes and/or with a temperature threshold of about 10° C. 15. The method according to claim 14, wherein the paralleling step is held for at least about 10 minutes and/or with a temperature threshold of about 10° C. 16. The method according to claim 1, wherein if said adsorption occurs at a pressure from about 7 to about 36 bar, the paralleling step is held for at least about 2 minutes and/or with a temperature threshold of about 30° C. 17. The method according to claim 16, wherein the paralleling step is held for at least about 5 minutes and/or with a temperature threshold of about 30° C. 18. The method according to claim 17, wherein the paralleling step is held for at least about 5 minutes and/or with a temperature threshold of about 25° C. 19. The method according to claim 18, wherein the paralleling step is held for at least about 10 minutes and/or with a temperature threshold of about 25° C. 20. The method according to claim 19, wherein the paralleling step is held for at least about 10 minutes and/or with a temperature threshold of about 20° C. 21. The method according to claim 20, wherei n the paralleling step is held for at least about 15 minutes and/or with a temperature threshold of about 15° C. 22. The method according to claim 1, wherein if said adsorption occurs at a pressure from about 20 to about 36 bar, the paralleling step will be held for at least about 2 minutes and/or with a temperature threshold of about 30° C. 23. The method according to claim 22, wherein the paralleling step is held for at least about 5 minutes and/or with a temperature threshold of about 30° C. 24. The method according to claim 23, wherein the paralleling step is held for at least about 5 minutes and/or with a temperature threshold of about 25° C. 25. The method according to claim 24, wherein the paralleling step is held for at least about 10 minutes and/or with a temperature threshold of about 25° C. 26. The method according to claim 25, wherein the paralleling step is held for at least about 10 minutes and/or with a temperature threshold of about 20° C. 27. The method according to claim 26, wherein the paralleling step is held for at least about 15 minutes and/or with a temperature threshold of about 15° C. 28. The method of claim 1, in a plant for treating a gas by adsorption comprising: a gas feed line ( 2 ); a treated gas discharge line ( 3 ); just two adsorbers (R 1 , R 2 ) which each follow the same, but shifted, cycle successively consisting of an adsorption phase, at a high cycle pressure, and of a regeneration phase with depressurization, which ends in the adsorber being depressurized, the method comprising a step of paralleling the adsorbers during which the total gas stream treated is obtained both by treating a first gas flow to be treated by at least one adsorber ending its adsorption phase, and treating a second gas flow to be treated by at least one other adsorber starting its adsorption phase; and means ( 10 , 11 , 15 , 16 , 17 , 15 A, 15 B) for connecting the adsorbers to the feed line, to the discharge line, to each other, and possibly to a line routing an oxygen-rich fluid, characterized in that the plant comprises a flow rate regulating device ( 22 ) actuating the connection means such that said connection means hold the paralleling step for a predetermined time interval very much longer than the switching time of the valves controlling the adsorbers starting said step, and/or as long as the temperature difference between that of the total flow and that of at least one of said flows is greater than a predetermined temperature threshold. 29. The method according to claim 28, wherein said regulating device ( 22 ) comprises a differential temperature sensor ( 22 A, 22 B, 22 C) for sensing the temperature difference between either the total stream, and the first flow, and/or between the total stream, and the second flow. 30. The method of claim 1, in a plant for treating a gas by adsorption comprising:i) a gas feed line ( 2 );ii) a treated gas discharge line ( 3 ); andiii) two adsorbers (R 1 , R 2 ),wherein said method comprising the steps of:i) shifting said adsorbers successively in an adsorption phase, at a high cycle pressure;ii) regenerating said adsorbers with depressurization; andiii) paralleling said adsorbers,wherein said paralleling step results in the treatment of the total gas stream comprising the steps of:i) treating a first gas flow by at least one adsorber (R 1 ) ending its adsorption phase; andii) treating a second gas flow to be treated by at least one other adsorber (R 2 ) starting its adsorption phase,wherein a means ( 10 , 11 , 15 , 16 , 17 , 15 A, 15 B) are employed for connecting the adsorbers to the feed line, to the discharge line, to each other, and possibly to a line routing an oxygen-rich fluid;wherein said plant consists of a flow rate regulating device ( 22 ) actuating the connection means; andwherein said connection means hold the paralleling step for either:a) a predetermined time interval longer than the switching time of the valves controllin g the adsorbers starting said step; and/orb) as long as the temperature difference between that of the total flow and that of at least one of said flows is greater than a predetermined temperature threshold. 31. The method according to claim 30, wherein said regulating device ( 22 ) comprises a differential temperature sensor ( 22 A, 22 B, 22 C) for sensing the temperature difference between either the total stream, and the first flow, and/or between the total stream, and the second flow.
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