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Gas carbon dioxide liquidation 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 poor safety, large equipment investment, complicated process, etc., achieve high reliability, small equipment investment and operating costs, and facilitate liquefaction Effect

Active Publication Date: 2017-08-18
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 liquidation system and method
  • Gas carbon dioxide liquidation 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 gas carbon dioxide liquidation system and method. The system comprises a raw material gas compressor, a circulation compressor, a plurality of parallel adsorbers, a resurgent gas heater, a low-temperature heat exchanger, a rectification purification tower, a plurality of switching valves and a plurality of throttle valves. The method includes the steps that (1) carbon dioxide raw material gas is compressed and cooled; (2) gas carbon dioxide deep purification is carried out; (3) gas carbon dioxide low temperature liquidation is carried out; (4) non-condensable gas in liquid carbon dioxide is removed; and (5) low pressure carbon dioxide gas circulated compression is carried out. The gas carbon dioxide liquidation system is compact in structure, high in efficiency, small in equipment investment and running cost and high in reliability; and by means of the method, safety of the system is improved, a low temperature rectifying tower and the low-temperature heat exchanger are used for replacing expensive refrigeration plants, gas carbon dioxide liquidation is facilitated, the cost of gas carbon dioxide liquidation is greatly reduced, and carbon dioxide gas circulated use is achieved.

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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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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