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Gas carbon dioxide liquefaction system and method

A technology of liquid carbon dioxide and carbon dioxide, applied in the compression and cooling liquefaction system, low-temperature liquefaction field, can solve the problems of complex process, poor safety, large equipment investment, etc., and achieve favorable liquefaction, high reliability, low equipment investment and operating costs Effect

Active Publication Date: 2019-09-20
上海九宇泰碳科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The entire liquid ammonia refrigeration system has defects such as large equipment investment, complicated process and poor safety.

Method used

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  • Gas carbon dioxide liquefaction system and method
  • Gas carbon dioxide liquefaction system and method

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Embodiment Construction

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. In the figure, the single arrow indicates the direction of gaseous carbon dioxide or non-condensable gas, and the hollow arrow indicates the direction of liquid carbon dioxide.

[0026] Such as figure 2 As shown, the gaseous carbon dioxide liquefaction system of the present invention includes a feed gas compressor 1, a circulation compressor 2, 3 parallel first adsorption towers 31, a second adsorption tower 32 and a third adsorption tower 33, and also includes a regeneration gas heater 4. Low-temperature heat exchanger 5, rectification and purification tower 6, multiple on-off valves and several throttle valves, the output end of the carbon dioxide feed gas 100 is connected to the input end 11 of the feed gas compressor, and the output end 12 of the feed gas compressor passes through the corresponding The on-off valves of the three adsorption tower...

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Abstract

The invention discloses a gaseous carbon dioxide liquefaction system and method. The system includes a raw gas compressor, a circulation compressor, several parallel adsorption towers, a regeneration gas heater, a low-temperature heat exchanger, a rectification purification tower, and a plurality of on-off valves and several throttling valves, the methods include: 1) compression and cooling of carbon dioxide feed gas, 2) deep purification of gaseous carbon dioxide, 3) low-temperature liquefaction of gaseous carbon dioxide, 4) removal of non-condensable gases in liquid carbon dioxide, 5) Cyclic compression of low pressure carbon dioxide gas. The system of the present invention has the advantages of compact structure, high efficiency, small equipment investment and operating costs, and high reliability. The method of the present invention improves the safety of the system, and adopts a low-temperature rectification tower and a low-temperature heat exchanger to replace expensive refrigeration equipment, which is more efficient. It is beneficial to the liquefaction of gaseous carbon dioxide, greatly reduces the cost of gaseous carbon dioxide liquefaction, and realizes the recycling of carbon dioxide gas.

Description

technical field [0001] The invention relates to a system for compressing and cooling and liquefying gaseous carbon dioxide, and also relates to a method for using the system to purify, precool and liquefy gaseous carbon dioxide, belonging to the technical field of gas processing. Background technique [0002] Colorless and odorless carbon dioxide (CO 2 ) is a major source of greenhouse gases. Excessive emissions of carbon dioxide have caused global warming and the melting of glaciers. However, carbon dioxide is an important resource with a wide range of uses, such as refrigerants, food additives, fire extinguishing agents, chemical raw materials, oil and gas exploration, agricultural production, etc. If carbon dioxide is captured, recovered, stored and applied, it will not only improve the utilization of carbon resources, but also effectively reduce greenhouse gas emissions. [0003] At present, carbon dioxide capture and recovery methods mainly include chemical absorptio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25J1/00
CPCF25J1/0027F25J3/08F25J2200/02F25J2200/74F25J2205/66F25J2210/04F25J2215/04F25J2215/80F25J2220/82F25J2230/30F25J2230/80F25J2245/02F25J2270/02
Inventor 毛恒松范庆虎
Owner 上海九宇泰碳科技有限公司
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