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Cascade recovery apparatus and method for benzene hydrocarbon volatile gases

A volatile gas and recovery device technology, applied in chemical instruments and methods, separation methods, separation of dispersed particles, etc., to achieve high efficiency, cost reduction, and high safety

Inactive Publication Date: 2015-01-21
QUANZHOU TIANLONG ENVIRONMENTAL ENG
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Problems solved by technology

[0005] Aiming at the shortcomings of the existing benzene series recovery and treatment devices, the present invention provides a benzene series "condensation + film + adsorption" three-effect atmospheric pressure cascade device and method, which not only effectively solve the problem of benzene series emission standards , and the solvent can be recycled

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  • Cascade recovery apparatus and method for benzene hydrocarbon volatile gases
  • Cascade recovery apparatus and method for benzene hydrocarbon volatile gases

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Embodiment Construction

[0018] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] refer to figure 1 , a cascade recovery device for benzene volatile gases, including a liquefaction recovery unit and an adsorption enrichment unit, the liquefaction recovery unit consists of: induced draft fan 1, precooler 2, condenser 3, membrane separator 4, first vacuum pump 5, The refrigeration system 6, the refrigerant pump 7, and the recovery tank 10 are composed; the adsorption enrichment unit is composed of: the adsorption tank 8, the second vacuum pump 9, and relevant valves for adsorption / desorption.

[0020] refer to figure 1 The inlet of the induced draft fan 1 is connected to the first vacuum pump 5 and the second vacuum pump 9 by an air inlet pipe, and the outlet is connected to the precooler 2; the inlet of the precooler 2 is connected to the condenser 3 and the induced draft fan 1 by a pipeline, and the outlet is connected to the m...

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Abstract

A related cascade recovery apparatus for benzene hydrocarbon volatile gases comprises a liquefaction recovery unit and an adsorption enriching unit; the liquefaction recovery unit comprises an induced draught fan, a precooler, a condenser, a membrane separator, a first vacuum pump, a refrigeration system, a refrigerant pump and a recovery tank; and the adsorption enriching unit comprises an adsorption tank, a second vacuum pump and multiple valves. The invention also provides a cascade recovery method of the volatile gases by utilizing the apparatus. By utilizing condensation, membrane and adsorption combined triple-effect normal-pressure cascade, the discharge standard-reaching problem of benzene series is effectively solved, and solvents are recoverable and reusable.

Description

technical field [0001] The invention relates to the technical field of recovery of organic solvent waste gas, in particular to a device and method for recovery of volatile organic waste gas generated during the loading and unloading of vehicles (ships) by benzene-containing organic solvents. Background technique [0002] Benzene series will produce a large amount of evaporation loss during the loading and shipping process, and the steam generated by evaporation will be directly discharged into the atmosphere, which will cause a lot of energy waste and also cause poisoning to the human body; on the other hand, flammable volatile gases After the formation, it not only has serious potential safety hazards, but also can form photochemical smog under ultraviolet radiation, causing environmental pollution. [0003] Benzene has low volatility, so the concentration of organic components in the exhaust gas during the filling process is also low. In order to adapt to the developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00B01D53/04B01D53/22
Inventor 傅汉文傅志森黄心明
Owner QUANZHOU TIANLONG ENVIRONMENTAL ENG
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