New material workshop exhaust gas treatment project case

Project name: new materials workshop exhaust gas treatment project

Project process: production line ceramic diaphragm with adhesive workshop exhaust gas; pooled and centralised treatment. Total production process: emulsifier preparation, stirring emulsification, initiator stirring and mixing, copolymerisation preparation, copolymerisation reaction, regulation and other processes.

Project conditions: the average exhaust gas meteorite total: 3000m7 / H; exhaust gas concentration: less than 300mg / H; the project's main MSDS for block copolymers, the main body of polyacrylate containing functional monomer modification, aqueous dispersions; does not contain APEO; this product does not belong to the hazardous materials; the product is a mixture.

Main treatment components: styrene, benzene, toluene, xylene and other VOC;.

Treatment programme process: jet washing + dry filtration + zeolite molecular sieve concentration + catalytic combustion (CO) process.

Treatment programme process: workshop production emissions through the duct lead into the pre-treatment equipment after treatment into the zeolite molecular sieve adsorber, gas organic matter by the zeolite molecular sieve suction, the gas is purified, the purified gas from the collection of the collection pipe after the fan to the chimney discharged.

In this process, the adsorber 3, adsorption process in general, 2 at the same time for adsorption, another 1 for desorption. But the desorption process must be single adsorber for sharp adsorption operation, not at the same time. Saturated adsorber (adsorption time exceeds the set value), through the pneumatic valve to switch to the state of desorption, start the catalytic bed of electric heaters and desorption fan, desorption of high concentrations of organic waste gas into the catalytic combustion equipment in the role of electric heating and catalysts, the organic substances in the gas decomposition into CO2 and HO, the gas is purified. The purified gas is purified by heat exchanger to recover part of the heat and then discharged, part of which is mixed with fresh air to the required regeneration temperature and used for desorption of zeolite molecular sieve, and the other part is directly discharged into the chimney.

Implementation of emission standards: the project's air pollution sources are mainly nano-ceramic powder workshop exhaust and ceramic diaphragm with adhesive workshop exhaust nano-ceramic powder workshop exhaust: particulate matter implementation of the "Guangdong Province Air Pollutant Emission Limits" (DB4427-201) the second period of the second level of standard limits; ceramic diaphragm with adhesive workshop exhaust: VOCs, styrene implementation of the "coatings, printing ink and adhesive industry" Air Pollutant Emission Standards. Emission Standards for Air Pollutants" (GB 37824-2019) adhesive manufacturing standards, acrylonitrile implementation of reference to the "Petrochemical Industry Pollutant Emission Standards" (GB31571-2015), the concentration of odour implementation of the "Emission Standards for Odorous Pollutants" (GB14554-93).

This process can be widely used in the purification and treatment of low concentration organic waste gas generated in petroleum, chemical, rubber, paint, coating, furniture, home appliances, printing and other industries, and the types of organic substances that can be treated include benzene, ketones, esters, alcohols, ethers and alkyl brands.