A vocs pretreatment system and separation method containing industrial paint mist

Abstract

A VOCs pretreatment system containing industrial paint mist, including impeller-type paint mist filter device, auxiliary paint mist collection device, paint mist collection device, secondary filter device, cyclone separation device, blower and heat exchanger, VOCs inlet and The impeller-type paint mist filter device is connected; the air outlet of the impeller-type filter device is connected to the inlet of the secondary filter device through a pipeline; the outlet of the secondary filter device is connected to the inlet of the cyclone separation device; It is connected to the heat exchanger through pipelines; the heat exchanger is also connected to the secondary filter device; the lower part of the impeller filter device is connected to the secondary filter device through the air chamber. The invention well connects the filtration process with the paint mist collection process, can realize high-efficiency purification of VOCs gas, and simultaneously recovers filtration and purification residues without secondary pollution.

Description

technical field [0001] The invention relates to a treatment system and separation method of organic waste gas, in particular to a VOCs pretreatment system and method containing industrial paint mist, and belongs to the technical field of environmental protection. Background technique [0002] Paint mist is a complex mixture that widely exists in the spraying industry. Unreasonable spraying methods or unreasonable design of spraying conditions often lead to a large amount of paint mist; the generation of paint mist not only causes a lot of waste of resources, but also affects VOCs (organic mixed gas) treatment brings certain difficulties; [0003] At present, the spraying process is more and more widely used in human life. However, the spraying process will produce a large amount of organic mixed gases (VOCs) that pollute the environment. With the deepening of economic globalization, my country has become the world's manufacturing plant, a huge economy The output of VOCs acco...

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Problems solved by technology

[0007] Although the above-mentioned invention can filter the paint mist in VOCs very well, the paint mist trapping device invented by Zhou Xiaoshen is a one-time use product. After the paint mist trapping device reaches the trapping capacity limit, it needs to be replaced with a new one. Paint mist collection device, and after filtering, it failed to further collect paint mist; on the other hand, the invention applied by Cai Qi et al. will generate a large amount of waste water in the process of collecting paint mist, and because the boiling point of VOCs is around 90°C, During the drying process of paint residue, VOCs in paint residue will precede H 2 O volatilizes, causing certain secondary pollution to the environment

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