An Engineering Design For Waste Gas Treatment System In An Electronic Production Company

In this paper, an engineering design for waste gas treatment system, together with its implementation and management in an electronic production company is described. The company produces mobile communication products and components, which generates abundant organic wastes, including xylene, ethyl-benzene, ethyl-acetate and odor during the painting spraying and drying processes. In view of the characteristics in large air volume and low concentration for the wastes, the paper designs an economical and efficient treatment system (combining with the original waste gas treatment facilities), aiming to achieve a comprehensive and in-depth removal of the organic wastes from the exhaust gas as generated during the production process.The enrichment of these low concentration organic wastes is achieved via an absorption process over advanced activated carbon. Through the interaction between the activated carbon and waste molecular, the organics can be effectively absorbed over the activated carbon surface. When the activated carbon approaches its adsorption saturation point, (?) air is then introduced, which desorbs the organic wastes into a catalytic oxidation bed. in this bed, non-flame combustion is occurred in the assist of noble metal catalysts, which tu(?) organic wastes into innocuous and non-poisonous water and carbon dioxide. The generated heat quantity can maintain the light-off temperature of the noble metal catalysts where no extra energy is needed for the combustion process. Moreover, part of this heat quantity is also recovered for desorption process (i.e. the regeneration activated carbon), which thereby greatly reduces the energy consumption for the whole treatment process.