Environmentally friendly method for generating energy from natural gas
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-043/00
E21B-043/40
E21B-043/34
출원번호
US-0149041
(2000-12-08)
등록번호
US-7281590
(2007-10-16)
우선권정보
NL-1013804(1999-12-09)
국제출원번호
PCT/NL00/000906
(2000-12-08)
§371/§102 date
20021119
(20021119)
국제공개번호
WO01/061167
(2001-08-23)
발명자
/ 주소
van de Waal,Wouter Willem
출원인 / 주소
Dropscone Corporation N.V.
대리인 / 주소
Weingarten, Schurgin, Gagnebin & Lebovici LLP
인용정보
피인용 횟수 :
12인용 특허 :
10
초록▼
The invention relates to an environmentally friendly method for generating energy from natural gas. Through the combustion of the natural gas with a mixture comprising substantially oxygen and CO2, a number of advantages are achieved with regard to the emission of CO2 and NOx. According to the inve
The invention relates to an environmentally friendly method for generating energy from natural gas. Through the combustion of the natural gas with a mixture comprising substantially oxygen and CO2, a number of advantages are achieved with regard to the emission of CO2 and NOx. According to the invention, the CO2-rich product gas is injected into a natural gas reservoir from which natural gas has been extracted. By the underground replacement of natural gas by CO2, a pressure drop in the natural gas reservoir can be controlled, so that subsidence is prevented. Additionally, in this manner, the emission of CO2 is reduced or even wholly prevented.
대표청구항▼
The invention claimed is: 1. A method for producing energy from natural gas in a natural gas reservoir and preventing soil subsidence in the natural gas reservoir, comprising the steps of: a) admixing an oxygen containing gas with the natural gas and converting said oxygen containing gas and said n
The invention claimed is: 1. A method for producing energy from natural gas in a natural gas reservoir and preventing soil subsidence in the natural gas reservoir, comprising the steps of: a) admixing an oxygen containing gas with the natural gas and converting said oxygen containing gas and said natural gas in the presence of CO2, into a flow comprising CO2 and water, whereby energy is generated; b) removing at least a part of the water from the flow comprising CO2 and water, so that a gaseous product flow is obtained; and c) injecting at least a part of said product flow into the natural gas reservoir from which the natural gas has been extracted characterized in that, said oxygen containing gas has a nitrogen content substantially lower than air, wherein injecting at least a part of said product flow into the natural gas reservoir substantially prevents soil subsidence in the natural gas reservoir. 2. A method according to claim 1, wherein step c) is carried out such that the pressure in the natural gas reservoir remains substantially constant. 3. A method according to claim 2, wherein the energy in step a) is generated in the form of heat and electricity. 4. A method according to claim 1, wherein the energy in step a) is generated in the form of heat and electricity. 5. A method according to claim 4, wherein the generated energy is at least partly used for obtaining a flow of oxygen-rich gas. 6. A method according to claim 5, wherein said flow of oxygen-rich gas is obtained by converting water into a flow of oxygen-rich gas and a flow of hydrogen-rich gas. 7. A method according to claim 6, wherein the flow of oxygen-rich gas is used as source of oxygen in step a). 8. A method according to claim 7, wherein the product flow is at least partly used as source of CO2 in step a). 9. A method according to claim 8, wherein in step a) approximately 18 volume % of oxygen is present. 10. A method according to claim 5, wherein said flow of oxygen-rich gas is obtained by separating a flow of air into a flow of nitrogen-rich gas and a flow of oxygen-rich gas. 11. A method according to claim 10, wherein the flow of oxygen-rich gas is used as source of oxygen in step a). 12. A method according to claim 11, wherein the product flow is at least partly used as source of CO2 in step a). 13. A method according to claim 12, wherein in step a) approximately 18 volume % of oxygen is present. 14. A method according to claim 1, wherein the generated energy is at least partly used for obtaining a flow of oxygen-rich gas. 15. A method according to claim 14, wherein said flow of oxygen-rich gas is obtained by converting water into a flow of oxygen-rich gas and a flow of hydrogen-rich gas. 16. A method according to claim 14, wherein said flow of oxygen-rich gas is obtained by separating a flow of air into a flow of nitrogen-rich gas and a flow of oxygen-rich gas. 17. A method according to claim 14, wherein the flow of oxygen-rich gas is used as source of oxygen in step a). 18. A method according to claim 1, wherein the product flow is at least partly used as source of CO2 in step a). 19. A method according to claim 1, wherein in step a) approximately 18 volume % of oxygen is present. 20. A method for preventing pressure drop in a natural gas reservoir and soil subsidence in the natural gas reservoir, comprising the steps of: a) admixing an oxygen containing gas with the natural gas and converting said oxygen containing gas and said natural gas in the presence of CO2, into a flow comprising CO2 and water, whereby energy is generated; b) removing at least a part of the water from the flow comprising CO2 and water, so that a gaseous product flow is obtained; c) injecting at least a part of said product flow into the natural gas reservoir from which the natural gas has been extracted characterized in that, said oxygen containing gas has a nitrogen content substantially lower than air, wherein injecting at least a part of said product flow into the natural gas reservoir substantially prevents soil subsidence in the natural gas reservoir; and d) using CO2 in said product flow for preventing pressure drop in the natural gas reservoir.
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이 특허에 인용된 특허 (10)
Stahl Charles R. (Scotia NY), Closed cycle gas turbine for gaseous production.
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Stoddord Xerxes T. (Denver CO) Vaseen Vesper A. (Wheat Ridge CO) Stoddard Xerxes T. (Denver CO), Minimizing subsidence effects during production of coal in situ.
Stoddard Xerxes T. (4617 W. 27th Ave. Denver CO 80212) Vaseen Vesper A. (9840 W. 35th Ave. Wheat Ridge CO 80033) Terry Ruel C. (3090 S. High St. Denver CO 80210), Production and wet oxidation of heavy crude oil for generation of power.
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Allam, Rodney John; Palmer, Miles R.; Brown, Jr., Glenn William, System and method for high efficiency power generation using a carbon dioxide circulating working fluid.
Allam, Rodney John; Palmer, Miles R.; Brown, Jr., Glenn William; Fetvedt, Jeremy Eron; Forrest, Brock Alan, System and method for high efficiency power generation using a carbon dioxide circulating working fluid.
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