System and method for treating natural gas that contains methane
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/14
B01D-019/00
B01D-053/22
출원번호
US-0122311
(2012-02-21)
등록번호
US-9180402
(2015-11-10)
우선권정보
DE-10 2011 102 923 (2011-05-31)
국제출원번호
PCT/EP2012/052956
(2012-02-21)
§371/§102 date
20131126
(20131126)
국제공개번호
WO2012/163554
(2012-12-06)
발명자
/ 주소
Buse, Gerhard
출원인 / 주소
Ingenieurburo Buse GmbH
대리인 / 주소
Casimir Jones, S.C.
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
The invention relates to a system for treating natural gas that contains methane, comprising: a) at least one degassing module (1) and/or at least one percolator, and b) at least one gas exchanging module (2). The invention is characterized in that the degassing module (1) and/or the percolator and
The invention relates to a system for treating natural gas that contains methane, comprising: a) at least one degassing module (1) and/or at least one percolator, and b) at least one gas exchanging module (2). The invention is characterized in that the degassing module (1) and/or the percolator and the gas exchanging module (2) are connected in a water circuit and arranged successively in the flow direction of the water. The water is degassed in the degassing module (1) and/or percolator, and the degassed water absorbs undesired gases from fed natural gas in the gas exchanging module (2). The fed natural gas is fed to the at least one gas exchanging module (2) in countercurrent to the degassed water. The invention further relates to a method for treating natural gas that contains methane, said method being carried out in the system according to the invention.
대표청구항▼
1. A system for treating methane-containing gas from natural sources, which comprises: a) at least one degassing module (1) and/or at least one trickle tower (10),b) at least one gas exchange module (2), andc) a water circuit comprising water (11), wherein the water circuit connects the degassing mo
1. A system for treating methane-containing gas from natural sources, which comprises: a) at least one degassing module (1) and/or at least one trickle tower (10),b) at least one gas exchange module (2), andc) a water circuit comprising water (11), wherein the water circuit connects the degassing module (1) and/or the trickle tower (10) and the gas exchange module (2), which are arranged in series in the flow direction of the water (11),where the water (11) is degassed in the degassing module (1) and/or the trickle tower (10) and the degassed water takes up undesirable gases from the methane-containing gas from natural sources which is fed in in the gas exchange module (2) andwhere the gas from natural sources which is fed in is introduced into the at least one gas exchange module (2) in countercurrent to the degassed water (11),characterized in that the water (11) in said water circuit is deionized water having a conductivity of less than 500 μS/cm. 2. The system of claim 1, wherein the at least one degassing module (1) and the at least one gas exchange module (2) each comprise a hollow-fiber water-impermeable and gas permeable-membrane. 3. The system of claim 1, wherein the plant further comprises at least one water tank (3) which is arranged upstream of the degassing module (1) and/or downstream of the trickle tower (10) and which provides said water (11) for the water circuit. 4. The system of claim 1, further comprising at least one vacuum pump (6) which applies a vacuum to the degassing module (1). 5. The system of claim 1, further comprising at least one apparatus for desulfurization (7) which is arranged upstream of the gas exchange module (2). 6. The system of claim 5, wherein the apparatus for desulfurization (7) is an activated carbon filter. 7. The system of claim 1, further comprising at least one compressor (9) which compresses the methane-containing gas from natural sources which is to be treated. 8. The system of claim 7, wherein said compressor (9) is arranged upstream of the gas exchange module (2). 9. The system of claim 7, wherein said gas exchange module (2) is operationally connected to an instrument for measuring the pressure of the gas from natural sources. 10. The system of claim 1, wherein at least one deionization plant is installed upstream of the degassing module (1). 11. The system of claim 10, wherein said at least one deionization plant is mobile. 12. The system of claim 10, wherein said at least one deionization plant is located upstream of the water tank (3). 13. The system of claim 1, wherein the at least one degassing module (1) and/or the at least one trickle tower (10) and the at least one gas exchange module (2) are physically separated. 14. The system of claim 1, wherein at least one trickle tower (10) which additionally removes gases dissolved in the water (11) before degassing of the water (11) in the degassing module (1) is installed upstream of the at least one degassing module (1). 15. A process for treating methane-containing gas from natural sources, which comprises the steps: a) degasification of water (11) in at least one degassing module (1) and/or at least one trickle tower (10) andb) gas exchange of the degassed water (11) from step a) in at least one gas exchange module (2),with undesirable gases present in the methane-containing gas from natural sources which is fed in going over from the gas phase of the gas from natural sources into the aqueous phase of the degassed water (11),wherein steps a) and b) are carried out in succession, where the degassing module (1) and/or the trickle tower (10) of step a) and the gas exchange module (2) of step b) are connected in a water circuit and are arranged in series in the flow direction of the water (11), andwherein the methane-containing gas from natural sources is introduced into the at least one gas exchange module (2) in countercurrent to the degassed water,and characterized in that said water (11) is deionized before step a), with the conductivity of the deionized water being less than 500 μS/cm. 16. The process of claim 15, wherein the conductivity of the deionized water is less than 400 μS/cm. 17. The process of claim 15, wherein the conductivity of the deionized water is less than 300 μS/cm. 18. The process of claim 15, wherein the hardness of the deionized water is less than 0.2° dH. 19. The process of claim 15, wherein the hardness of the deionized water is less than 0.1° dH. 20. The process of claim 15, wherein the hardness of the deionized water is less than 0.05° dH. 21. The process of claim 15, wherein the undesirable gases removed from the methane-containing gas from natural sources in step b) comprise hydrogen sulfide (H2S) and carbon dioxide (CO2). 22. The process of claim 15, wherein the methane content of the treated gas from natural sources after step b) is greater than 80%. 23. The process of claim 15, wherein the methane content of the treated gas from natural sources after step b) is greater than 85%. 24. The process of claim 15, wherein the methane content of the treated gas from natural sources after step b) is greater than 90%. 25. The process of claim 15, wherein the methane content of the treated gas from natural sources after step b) is greater than 95%. 26. The process of claim 15, wherein the methane content of the treated gas from natural sources after step b) is greater than 98%. 27. The process of claim 15, wherein the methane-containing gas from natural sources is dried and desulfurized and/or compressed before entering the gas exchange module (2) in step b). 28. The process of claim 27, wherein the methane-containing gas from natural sources is dried and desulfurized and/or compressed by means of at least one condenser for drying (8) and at least one apparatus for desulfurization (7) and/or at least one compressor (9). 29. The process of claim 15, wherein steps a) and b) are carried out physically separately. 30. The process of claim 15, wherein the treated gas from natural sources after step b) is dried before leaving the plant. 31. The process of claim 15, wherein said process is carried out in a plant of claim 1. 32. The process of claim 15, wherein the degassing of water (11) in at least one degassing module (1) in step a) is preceded by an additional degassing step in at least one trickle tower (10) which additionally removes gases dissolved in the water before degassing of the water in the degassing module (1). 33. The process of claim 15, wherein the degassing of water (11) in at least one degassing module (1) in step a) is replaced by a trickle tower (10) which serves to minimize the gases present in the water.
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이 특허에 인용된 특허 (5)
Roe, Kevin L.; Mandli, David J.; Neuhalfen, Amanda M., Apparatus and method for biogas purification.
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