No.5（2010）10.A Disposal Equipment for Exhaust Gas from Paint Factories Using Bag-Filters Coated with Activated Carbon Powder

Yasuyuki Hirano, Toshiya Hagiwara, Masayuki Kojima, Hiroaki Ise

  We developed a novel type of disposal equipment for exhaust gas from paint factories. Organic solvents are consumed in various small and medium-sized enterprises (SMEs). Severely polluted air is caused by photochemical oxidant of volatile organic compounds (VOCs) in urban areas. Although exhaust gas from paint factories needs to be purified, disposal equipments are unfamiliar in SMEs. Emissions from paint factories are large in volume and low concentration of VOCs and paint particles. Granular activated carbon is commonly used as adsorbent for VOCs. In this study, the equipment consists of bag-filters which are coated with activated carbon powder (ACP). ACP was used to remove VOCs and paint particles simultaneously. Pressure drop and disposal efficiency were influenced by particle diameter of ACP. The decrease of particle diameter increases the resistance of gas, with the increment of absorption efficiency. Experimental results revealed that our equipment is applicable to paint factories.

Keywords

volatile organic compounds, activated carbon, paint factories, small and medium-sized enterprises, environment, disposal equipment

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