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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
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출원번호 | US-0806054 (1985-12-05) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 277 인용 특허 : 8 |
Use of an air-blown underground coal gasification plant to produce low-Btu gas thereby providing boiler fuel needed for an oxygen-blown underground coal gasification plant. The product from the oxygen-blown plant can be used for the production of synthetic natural gas or other uses. A preferred prod
Use of an air-blown underground coal gasification plant to produce low-Btu gas thereby providing boiler fuel needed for an oxygen-blown underground coal gasification plant. The product from the oxygen-blown plant can be used for the production of synthetic natural gas or other uses. A preferred production gasification is also shown.
A method of underground coal gasification in a coal seam between linked injection and production wells comprising igniting coal located between said wells, injecting steam and oxygen into said coal seam through said injection well to maintain combustion between said wells thereby producing a medium-
A method of underground coal gasification in a coal seam between linked injection and production wells comprising igniting coal located between said wells, injecting steam and oxygen into said coal seam through said injection well to maintain combustion between said wells thereby producing a medium-Btu gas, the Btu content of said gas gradually decreasing, switching to air injection into said coal seam through said injection well when the Btu content has reached a predetermined point thereby continuing combustion with the production of a low-Btu content gas suitable for consumption at facilities located on the surface in the vicinity of said seam for the production of utilities required at said seam.
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