How to deal with the three major problems of waste gas: paint mist, organic waste gas and odor? At present, there are many ways to dispose of paint waste gas, including UV photolysis, water spray, condensation, oxidation, plasma, catalytic combustion, activated carbon adsorption and other paint waste gas disposal skills. What are the advantages and disadvantages of these painting waste gas disposal skills?

UV photolysis method: use high-energy and high ozone UV beams to illuminate odorous gases, and change the molecular chain planning of odorous gases such as ammonia, trimethylamine, methyl sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, styrene, sulfide h2s, voc, and benzene, so that the molecular chain of organic or inorganic macromolecular odorous compounds can be degraded and changed into low molecular compounds under high-energy UV beams, Such as co2, h2o, etc. It can remove volatile organic compounds (voc), inorganic substances, ammonia, mercaptan and other major pollutants, as well as various malodorous smells, and the deodorization power can reach more than 99%;

Water spray method: spray painting waste gas disposal Water spray technology is widely used in air pollution management, and has been used in the spraying process. For example, the water curtain cabinet, its principle is to complete the separation of pollutants and clean gas through water spraying in exhaust gas emission, water-soluble or large particle sedimentation.

The utility model has the advantage of simple water cost. After being stacked and filtered at the same time, it can be reused to reduce the waste of water cost. Water spray is a very high power for the disposal of large particles, which is usually used for the pretreatment of waste gas disposal.

Condensation method: after the paint spraying waste gas is directly condensed or condensed by adsorption, the condensate is recovered through separation and valuable organic matter. This method is used for high concentration, low temperature and small air volume for waste gas disposal. However, due to large investment, high energy consumption and high operating cost, this method is usually not used to purify paint exhaust.

Plasma reaction method: use plasma containing high-energy active groups to differentiate waste gas molecules, generate carbon dioxide and water, and then reach the intention of purifying waste gas. However, this method is not suitable for the disposal of flammable and explosive spray paint organic waste gas, which has safety risks, and the later maintenance of equipment is messy.

Direct combustion method: use oil or natural gas as auxiliary fuel to burn and heat the mixture to a certain temperature (700 ℃- 800 ℃), and stop some harmful gases produced by fuel combustion at any time. This method has simple skills, low equipment investment, but high energy consumption and high operating cost.

Catalytic combustion method: under the action of the catalyst, the hydrocarbon in the organic waste gas is sensitively oxidized to water and carbon dioxide at low temperature to reach the purpose of processing. However, for low concentration waste gas with large air volume, the cost is high and the operation cost is high.

Activated carbon adsorption: Organic gas is directly adsorbed by activated carbon. The equipment is simple, the investment is small, and the operation is convenient, but the activated carbon needs to be replaced frequently. The wind resistance of the equipment is large, the wind pressure of the fan is high, and the power consumption is large. The activated carbon replaced after application and subsequent disposal are troublesome. It is difficult to draw air in the plump back spray room, which affects the output and quality. Different skills are selected. Different skills have different product characteristics, with high power, no need to add any substances, low operating cost, small land occupation of waste gas disposal equipment, 4s waste gas disposal equipment, strong habit, etc. In the painting workshop of parts, there will be painting processes in the process of painting parts, This process will produce paint mist particles rich in triphenyl and organic waste gas, which will not only pollute the environment to a certain extent, but also cause great damage to paint spraying workers.