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Deep freezing device for effectively separating gas

A deep freezing and separation device technology, applied in household refrigeration devices, refrigerators, refrigeration components, etc., can solve problems such as high initial investment and operating costs, large evaporator load, and insufficient recovery of low-temperature air cooling capacity. , to achieve the effect of reducing initial investment, reducing operating costs, and reducing load

Inactive Publication Date: 2002-12-04
ZHEJIANG UNIV
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  • Summary
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Problems solved by technology

The result of this is that the load of the evaporator is large, and the low-temperature air cooling capacity of the system cannot be recovered well, which makes the initial investment and operating costs of the system high.

Method used

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  • Deep freezing device for effectively separating gas
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Embodiment Construction

[0007] The device proposed by the present invention consists of compressor 1, condenser 2, four-way reversing valve 3, stop valves 4a and 4b, regenerators 5a and 5b, evaporators 6a and 6b, two-way expansion element 7, gas three-way valve 8 , Drain valves 9a and 9b and two cold bridges 10a and 10b.

[0008] The high-pressure outlet of compressor 1 connects with the high-pressure inlet of four-way reversing valve 3 through condenser 2, the low-pressure outlet of four-way reversing valve 3 connects with the low-pressure inlet of compressor 1, and one port of four-way reversing valve 3 passes through a Regenerator 5a, one evaporator 6a, two-way expansion element 7, another evaporator 6b, another regenerator 5b are connected to the other interface of four-way reversing valve 3, and the two ends of the two-way expansion element are respectively connected to four A shut-off valve 4a and 4b are respectively connected between the two ports leading to the reversing valve, thereby formin...

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Abstract

A deep freezing equipment for effectively separating gas (high-purity gas and high-boiling-point gas) is disclosed. The high-pressure outlet of compressor is connected via condenser to high-pressure inlet of a four-way direction valve whose low-pressure outlet is connected to the low-pressure inlet of compressor. A port of said four-way direction valve is connected to its another port via reheater, evaporator, bidirectional expanding element, another evaporator and another reheater. Other units include cut-off valves between the said bidirectional expanding element and direction valve, three-way direction valve, and cold bridge for slowly transferring heat between two evaporators and two reheaters. Its advantages are high reliability and high efficiency.

Description

technical field [0001] The invention relates to a gas separation device, in particular to a deep-freezing high-efficiency separation device for reducing the pressure dew point of gas to a temperature below the freezing point temperature of its high-freezing-point components. Background technique [0002] Industrial gases, such as chemical gas, petroleum gas, natural gas, etc., and air are widely used in industrial and agricultural production and people's lives. But before using these gases, it is often necessary to reduce the high boiling point impurities in them. In other occasions, such as refining petroleum gas, it is necessary to recover high boiling point components. To remove high-boiling point gas impurities, the method of adsorbent adsorption is usually used in the past. However, this method consumes a lot of energy and has high operating costs. In recent years, there is also a method of freezing, but the freezing methods seen in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/02F25D21/06F25J3/00F25J5/00
Inventor 陈光明
Owner ZHEJIANG UNIV
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