[특허]Process for the recovery and purification of ethylene

[미국특허] Process for the recovery and purification of ethylene 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25J-001/02
출원번호	US-0043582 (1987-04-28)
발명자 / 주소	Rowles Howard C. (Center Valley PA) Grassi Kimberly S. (Schnecksville PA) Bernhard Dennis P. (Allentown PA)
출원인 / 주소	Air Products and Chemicals, Inc. (Allentown PA 02)
인용정보	피인용 횟수 : 18 인용 특허 : 17

초록 ▼

The present invention relates to a process for the recovery of ethylene from a feed gas containing ethane, methane and other light gases, e.g. cracked gas or refinery off-gases, wherein ethylene is condensed in two stages, preferably rectified, and fed to an integrated demethanizer column. Refrigeration for the process is provided by an integrated combination of work expansion of rejected light gases, by vaporization of separated ethane at low partial pressure but high total pressure, and by a mixed refrigerant system. The process results in the separation and purification of ethylene from the feed gas stream while significantly reducing the energy consumption to do so.

대표청구항 ▼

In a process for the recovery and purification of ethylene from an ethylene containing feed stream, wherein the ethylene containing feed stream is cooled in two heat exchange stages to condense out the bulk of C2+material present in the feed stream; the condensed C2+material is fed to a demethanizer column to remove any remaining light gases, producing a light gas stream as an overhead of the demethanizer column and a demethanized C2+stream is then fed to an ethylene-ethane separation process which produces at least an ethylene product stream and an ethane byproduct stream, the improvement comprising the utilization of three integrated refrigeration cycles wherein low level refrigeration for the second heat exchange stage is provided by work expansion, in one or more stages, of at least a portion of an uncondensed light gas stream removed from the cold end of the second heat exchange stage or an uncondensed light gas stream removed from the cold end of the second heat exchange stage and at least a portion of the light gas stream from the overhead of the demethanizer column; intermediate level refrigeration for the demethanizer column condenser and for the cold end of the first heat exchange byproduct stream from the ethylene-ethane separation process with at least a portion of the light gas stream from the cold end of the second heat exchange stage or at least a portion of the light gas stream from the overhead of the demethanizer column, or both; and high level refrigeration for the warm end of the first heat exchange stage is provided by a mixed refrigerant system.

이 특허에 인용된 특허 (17) 인용/피인용 타임라인 분석

Norenburg Johannes (Marblehead MA), Apparatus and method for recovering light hydrocarbons from hydrogen containing gases.
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Rentler Robert J. (Macungie PA) Sproul David D. (Houston TX), Combined cascade and multicomponent refrigeration method with refrigerant intercooling.
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Higgins Robert D. (Houston TX), Cryogenic recovery of liquid hydrocarbons from hydrogen-rich.
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Higgins Robert D. (Houston TX), Cryogenic recovery of liquids from refinery off-gases.
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Politte Leo L. (Bartlesville OK) Washer Stone P. (Bartlesville OK), De-ethanizing means.
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Newton Charles L. (Bethlehem PA) Stuber Wayne G. (Whitehall PA), Double mixed refrigerant liquefaction process for natural gas.
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Liu, Yu-Nan; Pervier, James W., Dual mixed refrigerant natural gas liquefaction.
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Newton Charles L. (Bethlehem PA), Dual mixed refrigerant natural gas liquefaction with staged compression.
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Schramm Walter (Munich DEX), Economic recovery of ethylene and/or propylene from low concentration feeds.
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Mestrallet Jolle (Asnieres FRX) Heck Gerard (Louveciennes FRX) Kaiser Victor (Maisons Laffitte FRX), Method of and apparatus for manufacturing ethylene.
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Becdelievre ; Charles ; Kaiser ; Victor ; Paradowski ; Henri, Method of and arrangement for processing through low temperature heat exchanges and in particular for treating natural.
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Chiu, Chen-hwa, Process for the liquefaction of natural gas.
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Rowles Howard C. (Center Valley PA) Tsao Tsun-chiu (Macungie PA), Recovery of C₂ hydrocarbons from demethanizer overhead.
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Pryor John A. (Emmaus PA) Rowles Howard C. (Center Valley PA), Recovery of C₂+hydrocarbons by plural stage rectification and first stage dephlegmation.
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Starks Charles M. (Ponca City OK), Recovery of ethane and ethylene from gaseous mixtures.
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Gazzi Luigi (Milan ITX) Sguera Oronzo (San Donato Milanese ITX), Refrigerative fractionation of cracking-gases in ethylene production plants.
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Schuster Robert (Munich DEX), Separation of ethylene-containing hydrocarbon mixtures by low temperature rectification.
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이 특허를 인용한 특허 (18) 인용/피인용 타임라인 분석

Trebble Mark,CAX, Apparatus for and method of separating a hydrocarbon gas into two fractions and a method of retrofitting an existing cryogenic apparatus.
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Netzer David, Combination process for manufacturing ethylene ethylbenzene and styrene.
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Netzer David, Combination process for manufacturing ethylene, benzene and alkylated benzene.
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McCue, Jr., Richard H., Cryogenic separation of gaseous mixtures.
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Howard Lee Jarvis ; Rowles Howard Charles, Dephlegmator process for nitrogen removal from natural gas.
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Drnevich,Raymond Francis; Herzog,Jeffrey O., Integrated olefin recovery and hydrogen production from refinery off-gases.
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Manley David B., Pre-fractionation of cracked gas or olefins fractionation by one or two mixed refrigerant loops and cooling water.
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Caranoni, Laurent; Descales, Bernard; Turnbull, Neil; Williams, Vaughn Clifford, Process and apparatus for producing olefins with heat transfer from steam cracking to alcohol dehydration process.
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Montalbano, Joseph A.; Lechnick, W. Jay; Zhu, Xin X., Process for recovery of cracker feed from dry gas.
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Kuechler Keith H. ; Lumgair David R., Production of ethylene using high temperature demethanization.
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Howard Lee Jarvis ; Rowles Howard Charles ; Wright Richard Alan ; Harris Christopher Francis ; Kinard Glenn Eugene ; Davis Robert Newton, Production of refrigerated liquid methane.
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Kuzma, Jr., Peter Daniel; De Haan, Stephen; Baumbach, Daniel Lee, Recovery of ethylene from methanol to olefins process.
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Nazar Behzad (Los Angeles CA), Rectified reflux deethanizer.
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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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A	생활필수품
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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] Process for the recovery and purification of ethylene 원문보기