[특허]High efficiency nitrogen rejection unit

[미국특허] High efficiency nitrogen rejection unit 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25J-003/02
출원번호	US-0126412 (1993-09-27)
발명자 / 주소	Butts Rayburn C. (2500 N. Big Spring St. Ste. 230 Midland TX 79705)
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

A process for separating nitrogen and hydrocarbons from a mixture of gases by splitting the mixture into a plurality of separate streams and throttling the flow of each stream to achieve a selected variable flow rate therebetween. The plurality of separate streams are individually cooled by exchanging heat with a plurality of different process streams. The cooled streams are combined and expand into a separation column where nitrogen ascends the column and exits as a process stream while hydrocarbon descends the column to a reboiler thereof and exits as a process stream. The reboiler is used for cooling one of the separate streams. The hydrocarbon from the bottom of the column is expanded and used to cool a reflux condenser located inside the column and thereafter cools another of the streams before it is discharged from the process. The nitrogen process stream is used to cool another of the separated streams, and then is discharged from the process.

대표청구항 ▼

A system for separating nitrogen and hydrocarbon from a mixture thereof, comprising: means for elevating the pressure of said mixture to provide a feed gas stream; first, second, third, and fourth heat exchangers having a primary side and a secondary side, with said secondary side thereof being connected to exchange heat with a downstream process stream; means splitting said feed gas stream into a first, second, third, and fourth stream and connecting said first, second, third, and fourth stream, respectively, to the primary side of said first, second, third, and fourth heat exchangers, respectively, and to throttle the flow of said first, second, third, and fourth and thereby achieve a selected flow ratio therebetween; a separator column having a reflux condenser connected at the top thereof and a column bottom heat exchanger connected at the bottom thereof; first expansion valve means connecting the primary of said first heat exchanger to expand to the internal pressure of said separator column and thereby reducing the temperature of the fluid flowing through the column; second expansion valve means connecting the primary of said second, third, and fourth heat exchangers to expand to the internal pressure of said separator column and reducing the temperature of the fluid flowing through the column; and a third expansion valve means; a high pressure residue stream connecting the column bottom to the secondary of said fourth heat exchanger and then to a high pressure sales gas outlet; said column bottom heat exchanger having a primary side and a secondary side; means connecting the column bottom to said secondary of said column bottom heat exchanger and then through said third expansion valve means to expand into said reflux condenser and return as a low pressure residue stream connecting the primary of said column bottom heat exchanger to a low pressure sales gas outlet; a nitrogen gas outlet; means connecting the top of the separator column to the secondary of said first heat exchanger to thereby cool the fluid flowing through the primary of the first heat exchanger, and then to said nitrogen gas outlet; and means by which said means splitting said feed gas stream, said expansion valves, and said reflux condenser temperature are adjusted within an optimum range for separating the nitrogen from the mixture.

이 특허를 인용한 특허 (39) 인용/피인용 타임라인 분석

Bingham Dennis N. ; Wilding Bruce M. ; McKellar Michael G., Apparatus and process for the refrigeration, liquefaction and separation of gases with varying levels of purity.
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Dennis N. Bingham ; Bruce M. Wilding ; Michael G. McKellar, Apparatus and process for the refrigeration, liquefaction and separation of gases with varying levels of purity.
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Turner, Terry D.; Wilding, Bruce M.; McKellar, Michael G., Apparatus for the liquefaction of a gas and methods relating to same.
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Turner, Terry D.; Wilding, Bruce M.; McKellar, Michael G., Apparatus for the liquefaction of natural gas and methods relating to same.
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Wilding, Bruce M.; Bingham, Dennis N.; McKellar, Michael G.; Turner, Terry D.; Rateman, Kevin T.; Palmer, Gary L.; Klinger, Kerry M.; Vranicar, John J., Apparatus for the liquefaction of natural gas and methods relating to same.
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Wilding, Bruce M.; Bingham, Dennis N.; McKellar, Michael G.; Turner, Terry D.; Raterman, Kevin T.; Palmer, Gary L.; Klingler, Kerry M.; Vranicar, John J., Apparatus for the liquefaction of natural gas and methods relating to same.
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Wilding, Bruce M.; McKellar, Michael G.; Turner, Terry D.; Carney, Francis H., Apparatus for the liquefaction of natural gas and methods relating to same.
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Wilding,Bruce M.; Bingham,Dennis N.; McKellar,Michael G.; Turner,Terry D.; Raterman,Kevin T.; Palmer,Gary L.; Klingler,Kerry M.; Vranicar,John J., Apparatus for the liquefaction of natural gas and methods relating to same.
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Turner, Terry D.; Wilding, Bruce M., Complete liquefaction methods and apparatus.
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Mak, John, Configurations and methods for nitrogen rejection, LNG and NGL production from high nitrogen feed gases.
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Mak, John, Configurations and methods for nitrogen rejection, LNG and NGL production from high nitrogen feed gases.
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Howard Lee Jarvis ; Rowles Howard Charles, Dephlegmator process for nitrogen removal from natural gas.
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Jonathan Hoadley, Filtration process utilizing heat exchanger apparatus.
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Turner, Terry D.; McKellar, Michael G., Heat exchanger and related methods.
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Turner, Terry D.; Wilding, Bruce M, Heat exchangers comprising at least one porous member positioned within a casing.
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Ichinowatari Yasuo,JPX, Method of avoiding unnecessary facsimile transmission delays, and facsimile machine employing this method.
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Turner, Terry D.; Wilding, Bruce M., Methods of conveying fluids and methods of sublimating solid particles.
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Wilding, Bruce M.; Turner, Terry D., Methods of natural gas liquefaction and natural gas liquefaction plants utilizing multiple and varying gas streams.
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Stinson, Donald Leo, Natural gas processing system.
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Cole Eric T., Process for removing a volatile component from natural gas.
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Cole Eric T. ; Stone Brandon T., Process for separating a multi-component pressurizied feed stream using distillation.
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Turner, Terry D.; McKellar, Michael G.; Wilding, Bruce M., Sublimation systems and associated methods.
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Butts, Rayburn C., System and method for producing LNG from contaminated gas streams.
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Butts, Rayburn C., System and method for reducing nitrogen content of GSP/expander product streams for pipeline transport.
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Butts, Rayburn C., System and method for removing excess nitrogen from gas subcooled expander operations.
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Butts, Rayburn C., System and method for separating wide variations in methane and nitrogen.
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Stinson, Donald Leo, System for dehydrating and cooling a produced gas to remove natural gas liquids and waste liquids.
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Stinson, Donald Leo, System for separating a waste liquid from a produced gas and injecting the waste liquid into a well.
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Stinson, Donald Leo, System for separating a waste material and hydrocarbon gas from a produced gas and injecting the waste material into a well.
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Stinson, Donald Leo, System for separating a waste material from a produced gas and injecting the waste material into a well.
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Stinson, Donald Leo, System for separating carbon dioxide and hydrocarbon gas from a produced gas combined with nitrogen.
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Stinson, Donald Leo, System for separating carbon dioxide from a produced gas with a methanol removal system.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Severinsky, Alexander J., Systems, methods, and compositions for production of synthetic hydrocarbon compounds.
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Gaskin,Thomas K., Use of cryogenic temperatures in processing gases containing light components with physical solvents.
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Turner, Terry D.; Wilding, Bruce M.; McKellar, Michael G.; Shunn, Lee P., Vaporization chambers and associated methods.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] High efficiency nitrogen rejection unit 원문보기