[특허]Process and apparatus for producing liquid carbon dioxide

Process and apparatus for producing liquid carbon dioxide 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25J-003/02 F25J-003/00 F01K-017/00
출원번호	US-0940281 (1992-09-03)
발명자 / 주소	Callahan Richard A. (Waitsfield VT)
출원인 / 주소	Enerfex, Inc. (Burlington VT 02)
인용정보	피인용 횟수 : 78 인용 특허 : 0

초록 ▼

A process for producing liquid carbon dioxide. A process stream which comprises carbon dioxide, balance substantially nitrogen and water, is cooled so that a minor amount of the water is condensed out. The process stream is compressed so that substantially all of the water but trace amounts is condensed out. Next, the process stream is cleaned to remove the trace amounts of water, any long-chain hydrocarbons present and any particulates present. The process stream is then separated into a nitrogen-rich gaseous stream and a carbon dioxide-rich gaseous stream. The carbon dioxide-rich gaseous stream is then compressed and the nitrogen-rich gaseous stream is expanded to produce an expanded nitrogen-rich gaseous stream. The energy of the expanding is used to compress the carbon dioxide-rich gaseous stream. The compressed carbon dioxide-rich gaseous stream is cooled to liquefy the carbon dioxide in the stream and reduce the temperature of the gaseous nitrogen in the stream. The liquefied carbon dioxide is withdrawn as product. The liquefying of the carbon dioxide-rich gaseous stream is by using the expanded nitrogen-rich gaseous stream. After the liquefying, the nitrogen-rich gaseous stream is used to perform at least part of the first cooling. In a preferred form, the process stream results from combusting a mixture of fuel and oxygen in a heat engine to drive an electrical generator with the product of the heat engine to produce electricity and also yielding the process stream. Apparatus for the production of liquid carbon dioxide which includes devices to perform each of the process steps.

대표청구항 ▼

A process for producing liquid carbon dioxide which comprises: (a) cooling a process stream which comprises from about 10 to about 50% carbon dioxide, balance substantially nitrogen, and water, whereby a minor amount of the water is condensed out of the process stream; (b) compressing the process stream, whereby substantially all of the water but trace amounts is condensed out of the process stream; (c) treating the cooled process stream to remove the trace amounts of water, any long-chain hydrocarbons present and any particulates present; (d) separating the process stream into a nitrogen-rich gaseous stream and a carbon dioxide-rich gaseous stream which contains at least 50% carbon dioxide; (e) compressing the carbon dioxide-rich gaseous stream of step (d); (f) expanding the nitrogen-rich gaseous stream of step (d) to produce an expanded nitrogen-rich gaseous stream and using the energy of such expanding to compress the carbon dioxide-rich gaseous stream in step (e); (g) cooling the carbon dioxide-rich gaseous stream from step (f) to liquefy the carbon dioxide therein and reduce the temperature of the nitrogen therein, the nitrogen remaining gaseous; (h) withdrawing the thus liquefied carbon dioxide of step (g); and (i) wherein the liquefying of the carbon dioxide-rich gaseous stream in step (g) is by using the expanded nitrogen-rich gaseous stream which has been expanded in step (f) and, after said liquefying of said carbon dioxide-rich gaseous stream, thereafter using said nitrogen-rich gaseous stream to perform at least part of said cooling of step (a).

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IPC	Description
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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연합인증

Process and apparatus for producing liquid carbon dioxide 원문보기

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Process and apparatus for producing liquid carbon dioxide 원문보기

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