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Low temperature and high pressure liquefaction recovery device for carbon dioxide in petrochemical exhaust gas

A carbon dioxide, low temperature and high pressure technology, applied in liquefaction, refrigeration, liquefaction, solidification, etc., can solve the problems of limiting carbon dioxide recycling, increasing equipment investment, and high production costs, and achieve the effect of saving equipment investment, saving power, and low recycling costs

Inactive Publication Date: 2018-04-20
JIANGSU REFRIGERATION & LIQUEFACTION EQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only increases equipment investment, but also consumes energy to run the refrigerator, which makes the production cost of purifying and recovering carbon dioxide in the exhaust gas to prepare low-temperature and high-pressure liquid carbon dioxide is relatively high, which limits the recycling and utilization of carbon dioxide in the exhaust gas.

Method used

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  • Low temperature and high pressure liquefaction recovery device for carbon dioxide in petrochemical exhaust gas

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Embodiment Construction

[0017] Such as figure 1 Shown, the present invention comprises feed gas tank 1, compressor 2, cooler 3, heat exchanger 4, distillation tower 7, cryogenic air turbo expander 8 and cryogenic vacuum storage tank 10, the outlet of feed gas tank 1 and compression The inlet of the compressor 2 is connected, the outlet of the compressor 2 is connected with the inlet of the cooler 3, the outlet of the cooler 3 is connected with the high temperature inlet of the heat exchanger 4, and the high temperature outlet of the heat exchanger 4 is connected with the distillation tower 7 through the first valve 5 The bottom outlet of the distillation tower 7 is connected to the low-temperature vacuum storage tank 10 through the third valve 9, and the low-temperature vacuum storage tank 10 is connected to the low-temperature vacuum tanker through the fourth valve 11; the liquid carbon dioxide can be directly supplied to the user through the low-temperature vacuum tanker . The low-temperature air ...

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Abstract

A low temperature and high pressure liquefaction recovery device for carbon dioxide in petrochemical exhaust gas comprises a raw material gas tank, a compressor, a cooler, a heat exchanger, a distillation column and a lower temperature air turbo expander; an outlet of the raw material gas tank is connected to an inlet of the compressor; an outlet of the compressor is connected with an inlet of thecooler; the outlet of the cooler is connected with the distillation column through the heat exchanger; the lower temperature air turbo expander is connected to an inlet of the heat exchanger.

Description

technical field [0001] The invention relates to waste gas recovery equipment, more precisely, a low-temperature and high-pressure liquefaction recovery device for carbon dioxide in petrochemical tail gas. Background technique [0002] Petrochemical, smelting and other industrial production processes will produce a large amount of waste gas, the main component of which is carbon dioxide, with a content of more than 80%. These waste gases are directly discharged into the atmosphere, which will cause great pollution to the atmospheric environment. In fact, carbon dioxide is also an important industrial raw material in many fields. In the food and pharmaceutical industries, high-purity food-grade carbon dioxide gas can be used as an additive and a leavening agent. Industrial-grade carbon dioxide gas can be used as a new type of non-toxic refrigerant in refrigeration systems. [0003] In recent years, with the tightening of energy resources, scientists are studying a new method ...

Claims

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Application Information

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IPC IPC(8): F25J1/00F25J1/02
CPCF25J1/0027F25J1/0221F25J2200/02F25J2210/40F25J2215/04F25J2220/82F25J2230/30F25J2270/14F25J2270/904F25J1/0282F25J2205/10
Inventor 樊军
Owner JIANGSU REFRIGERATION & LIQUEFACTION EQUIP CO LTD
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