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Double-heat-source defrosting oil gas recovery set capable of preventing refrigerant from migration

A technology of recovery unit and dual heat sources, applied in compressors with cascade operation, compressors with multiple evaporators, refrigerators, etc. The effect of improving the degree of defrosting, improving the cooling capacity and increasing the temperature

Pending Publication Date: 2019-01-15
NANJING WUZHOU REFRIGERATION GRP
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: In order to solve the reliability problems of defrosting and refrigerant migration in the existing condensing oil gas recovery technology, the present invention provides a dual heat source defrosting oil gas recovery unit with the function of preventing refrigerant migration

Method used

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  • Double-heat-source defrosting oil gas recovery set capable of preventing refrigerant from migration

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Embodiment Construction

[0022] This specific embodiment discloses a dual heat source defrosting oil and gas recovery unit with the function of preventing refrigerant migration, including:

[0023] Pre-stage compressor refrigeration system: Provide two evaporation temperatures of 0°C and -30°C through the evaporation pressure controller, undertake the cooling capacity of the first two stages for the three-stage condensation dual-channel oil-gas system, and undertake the condensation load for the post-stage compressor refrigeration system;

[0024] Post-stage compressor refrigeration system: undertake the cooling capacity of the third lowest temperature section for the three-stage condensing dual-channel oil-gas system;

[0025] Three-stage condensing dual-channel oil-gas system: the first stage and the second stage are connected to the refrigeration system of the pre-stage compressor to realize the condensation of the first stage at 5°C and the second stage at -25°C; the third stage is connected to the...

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Abstract

The invention discloses a double-heat-source defrosting oil gas recovery set capable of preventing a refrigerant from migration. The set comprises a primary compressor refrigeration system, a secondary compressor refrigeration system, a three-level condensation bi-channel oil gas system and a double-heat-source defrosting system. Refrigerant high-temperature hot gas is combined with high temperature inlet oil gas effectively, exhausted high-temperature refrigerant gas is input to a pipe for heating defrosting when the set runs for defrosting, the high temperature hot oil gas carries out defrosting outside the pipe, defrosting is carried out in the two manners, defrosting time can be shortened greatly, and defrosting is more thorough .

Description

technical field [0001] The invention relates to the technical field of industrial organic compound recovery equipment, in particular to a dual heat source defrosting oil gas recovery unit with the function of preventing refrigerant migration. Background technique [0002] Liquid oil will produce a large amount of harmful oil and gas in the storage of tank farms, oil distribution operations, refinery treatment, etc., and the release of substandard oil and gas into the atmosphere will not only cause energy waste, but also pollute the environment, damage human health and cause fire hazard. Under the national environmental protection policy, the state and local governments have formulated mandatory standards requiring that oil and gas emissions must be recovered to ensure that the exhaust emissions meet the standards. [0003] At present, the oil and gas recovery methods are mainly absorption method, adsorption method, membrane separation method and condensation method, but no ...

Claims

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Application Information

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IPC IPC(8): F25B7/00F25B5/02F25B31/00F25B41/04F25B41/06F25B47/00F25B47/02F25B49/02F25B41/20F25B41/34
CPCF25B5/02F25B7/00F25B31/004F25B47/00F25B47/022F25B49/02F25B2400/13F25B41/31F25B41/20
Inventor 江辉民刘宇峰李新梅秦惠
Owner NANJING WUZHOU REFRIGERATION GRP
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