RESEACH AND ADJUST AIR FILTERING SYSTEM AT FORMALIN FACTORY, TAM DIEP INDUSTRIAL ZONE, TAMDIEP CITY, NINH BINH PROVINCE

Abstract

The research was conducted at Formalin Factory at Lot 3, Tam Diep Industrial Zone, Tam Diep City, Ninh Binh Province. In the process of building (2016-2017), the factory had invested exhaust treatment system. However, the exhaust after the tower absorbs the remaining water vapor, HCHO, CH₃OH, CO, CO₂, CH₄, H₂... Analyze and evaluate the production process, especially the process of exhaust gas, proposed to install additional gas flare sections in order to vaporise the gases after the absorption tower, supply heat for the production line.

Using Gauss model to calculate and compare the result in 2 situations: (1) Using the air filtering system without air burn torch (2) Install additional air burn touch after the filtering tower. Compare results show: when air burn torch isn’t installed, the concentration of CO, CH₃OH, HCHO is above the intended in the regulation by 1-2,28 times at a distance from 100-500m. When there is a gas torch, the gaseous emission component is CO₂ with small content, meets the emission regulations. Thus, after installing additional gas flare on the one hand can handle the gas, on the one hand save fuel to bring economic and environmental benefits.