The waste gas treatment equipment in pulping process of paper mill is mainly embodied in three aspects

In our life paper products have been widely used in books, magazines, newspapers, textbooks, diary, all kinds of brochures and napkins, facial tissues, toilet paper and so on. These have become an indispensable part of our lives. Paper mill in the process of production will produce a lot of pollutants, poses a great pollution to the atmosphere, water, land would be, for example in the cooking process producing alcali sulphide, caustic soda and other alkali, chlorine in the bleaching process, waste water and waste water of stench gas, these will have a big impact on the surrounding environment and residents.

The waste gas treatment in pulping process of paper mill is mainly reflected in three aspects

One is the waste gas in the pulp production process, will be completely sealed conveying system were sent to alkali recovery boiler combustion, such as line from the pulp, steam pot, causticizing and stripper NCG condensate gas, its composition containing sulfur compounds such as H2S, still contain turpentine oil, methanol steam, water, steam, nitrogen, oxygen and other gases, corrosive, poisonous and explosive. Therefore, the lack of necessary recovery of NCG is bound to greatly affect air quality. The pulp and paper mill sends the NCG generated in the system to the alkali recovery boiler for combustion, which can not only prevent its serious pollution to the air, but also effectively recover the sulfur.

Second, the waste gas produced by pulp bleaching and chemical preparation is chemically treated by the exhaust scrubber of the waste gas treatment equipment. The waste gas treatment equipment of the paper mill is converted into pollution-free gas and then discharged into the atmosphere.

The third is the power boiler, the alkali recovery boiler and the lime kiln combustion produces the dust, after the combustion exhaust emission sets the high efficiency electrostatic dust removal equipment, in order to remove the dust. The dust removal efficiency of gda exhaust gas treatment equipment is more than 99%, removing most flying ash and dust in the flue, effectively ensuring air quality and life health.

Due to the characteristics of paper mill production process in the exhaust fumes, produce the stench, adhesion, high temperature, high humidity, dust, this case need to be set up in front of the UV photolysis purification equipment water cooling tower with spray washing to dust, and the coarse filtration as the pretreatment equipment, to ensure that the dust impurities contained in the exhaust gas introduced by induced draft fan in the UV photolysis effectively intercept filtration purification equipment. After the initial pretreatment of the exhaust gas into the photolysis purification equipment, it is sent out by the fan, and then discharged at high altitude through the exhaust pipe.