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Carbon dioxide liquefaction device

A carbon dioxide and liquefaction device technology, applied in liquefaction, refrigeration and liquefaction, inorganic chemistry and other directions, can solve the problems of large carbon dioxide recovery power, difficult to improve the overall efficiency of the system, etc., and achieve the effect of low power

Inactive Publication Date: 2015-09-23
MITSUBISHI HEAVY INDUSTIES COMPRESSOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the chemical absorption method also requires a large carbon dioxide recovery power, making it difficult to improve the overall efficiency of the system

Method used

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  • Carbon dioxide liquefaction device
  • Carbon dioxide liquefaction device

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Embodiment Construction

[0031] Hereinafter, a carbon dioxide liquefier according to an embodiment of the present invention will be described.

[0032] figure 1 The carbon dioxide liquefier of this embodiment is shown.

[0033] The carbon dioxide liquefier 1 in the present embodiment is installed, for example, in facilities including power generation facilities such as coal gasifiers or gasification facilities. The generated gas or exhaust gas of these devices contains a large amount of carbon dioxide (CO2 gas). The facility of this embodiment has facilities for separating carbon dioxide contained in generated gas or exhaust gas and changing it to a high-pressure state.

[0034] Such as figure 1 As shown, the carbon dioxide liquefaction device 1 includes a carbon dioxide liquefaction unit 2 that liquefies carbon dioxide by exchanging heat with a part of the cold and heat sources in gaseous state used and produced in the cold and heat source generation equipment P as refrigerant. The carbon dioxide...

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Abstract

The present invention is equipped with: a carbon dioxide liquefaction unit, which performs a heat exchange with a refrigerant (which is a portion of a cold heat source in the gaseous state that is used and manufactured in a cold heat source production plant), thereby liquefying carbon dioxide which has been separated and recovered from a gas containing carbon dioxide; and an energy recovery unit, which extracts energy and lowers the temperature of the gaseous refrigerant by expanding the gaseous refrigerant that has exchanged heat with the carbon dioxide in the carbon dioxide liquefaction unit. The energy recovery unit returns the gaseous refrigerant, the temperature of which has been lowered, to the cold heat source production plant.

Description

technical field [0001] The invention relates to a carbon dioxide liquefaction device for liquefying carbon dioxide. Background technique [0002] In recent years, in order to prevent global warming and the like, there are various technologies for removing carbon dioxide contained in exhaust gas from thermal power plants and the like. [0003] For example, Patent Document 1 describes a technique for liquefying and separating carbon dioxide contained in exhaust gas by increasing the concentration of carbon dioxide contained in exhaust gas using an oxygen combustion boiler system in a coal-fired thermal power plant or the like. [0004] Patent Document 2 describes that carbon dioxide contained in exhaust gas from a coal-fired power plant is used to generate electricity through a molten carbonate fuel cell, and at the same time the carbon dioxide contained in the exhaust gas is concentrated by utilizing the carbon dioxide enrichment effect in the molten carbonate fuel cell and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J1/00C01B31/20F25J3/04C01B32/50
CPCF25J1/0027F25J1/0234F25J2260/80F25J2270/14F25J2210/42F25J2240/12F25J2260/44F25J3/04612F25J1/0221C01B31/20F25J3/04309F25J3/04381F25J2270/16F25J3/042C01B32/50Y02P20/10
Inventor 桥爪启
Owner MITSUBISHI HEAVY INDUSTIES COMPRESSOR CORP