최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0531453 (1974-12-11) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 264 인용 특허 : 0 |
The process of the invention includes the concept of igniting a coal formation in situ with hot granular material and subsequently allowing the material to flow into the burning coal formation to serve as a propping agent in the event of a cave-in. Gasifying agents are injected into the formation in
The process of the invention includes the concept of igniting a coal formation in situ with hot granular material and subsequently allowing the material to flow into the burning coal formation to serve as a propping agent in the event of a cave-in. Gasifying agents are injected into the formation in an alternating pattern to alternately oxidize and reduce the coal environment to optimize the BTU content of the recovered gas. Further, a heat receptive liquid is circulated through the casing in the well connecting the coal formation to the surface to strip the sensible heat from the produced gases so that the heat can be used for useful purposes apart from the produced gas. The apparatus of the invention includes a casing in the well bore which has a plurality of vertically spaced dividers each having a passage therethrough so that a heat receptive fluid can be passed between dividers in a vertical descent through the casing and during such descent strip sensible heat from the produced gas before being brought back to the surface. Hot granular material is placed in the well in contact with the coal formation to ignite the formation and to flow into cavities formed in the formation during the burning thereof to serve as a propping agent.
Apparatus for in situ gasification of a subsurface coal formation which is in communication with a surface location by an open passage comprising in combination: a casing in said passage, said casing having divider means defning vertically aligned compartments in said casing, each of said divider me
Apparatus for in situ gasification of a subsurface coal formation which is in communication with a surface location by an open passage comprising in combination: a casing in said passage, said casing having divider means defning vertically aligned compartments in said casing, each of said divider means, with the exception of the uppermost and lowermost ones of said divider means, having openings therethrough establishing fluid communication between adjacent compartments defined between said uppermost and lowermost divider means for the passage of fluid material between adjacent compartments, injection conduit means extending from said surface location to the coal formation, gas removal conduit means extending from the coal formation to the surface location, said gas removal conduit means passing through said compartments in the casing, fluid inlet means for introducing a heat receptive fluid into the uppermost one of said compartments whereby said heat receptive fluid can flow downwardly through successive compartments to strip sensible heat from the gases passing through saId gas removal conduit means, and fluid removal means for transferring the heat receptive fluid from the lower end of the casing to the surface location where the heat in the fluid can be removed for useful purposes. A method of in situ gasification of a subsurface coal formation comprising the steps of: establishing a passage between a surface location and the coal formation, setting a casing in the passage, injecting a plurality of hot particles in a non-flammable environment into said casing, said particles having a temperature in excess of the ignition temperature of coal, and allowing at least some of the particles to come into contact with the coal to ignite the coal causing it to burn and give off useful gases.
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.