A packaging and printing factory exhaust gas treatment case

Project conditions: the project packaging and printing workshop to produce organic waste gas treatment, the project pollution sources are mainly collected printing, laminating, brushing glue folding bags, glue, folding bags, sealing, sealing the edge of the process exhaust, the main components of the exhaust gas for benzene, toluene, xylene, non-methane total by volatile organic waste gas, after the detection of the project's total exhaust gas treatment 21,500m3/h, the total concentration of exhaust gas treatment is about 300mg/m3. The total concentration of exhaust gas is about 300mg/m3.

Processing scale: total air volume: 21500m3/h, ; the total concentration of exhaust gas is about 300mg/m3;

Treatment process: dry filter + activated carbon adsorption and concentration + catalytic combustion device all-in-one process;

Design scheme:This project adopts dry filter + activated carbon adsorption concentration + catalytic combustion device process for treatment. Exhaust gas is introduced into the dry filter through the main process fan to purify, remove large particles and harmful substances on the activated carbon, after pretreatment, the exhaust gas is then transported to the activated carbon adsorption and concentration device, the VOCs in the exhaust gas is absorbed by the activated carbon and intercepted to meet the standards of emission into the atmosphere. Adsorption and concentration of organic waste gas on the surface of activated carbon, after high-temperature desorption directly into the CO catalytic combustion oxidation system, through the noble metal accelerated oxidation of high concentration of waste gas, in the high temperature ( 250-380 ℃ ) between the purification and oxidation of harmless carbon dioxide ( C02 ) and water vapour ( H20 ), and meet the standards of the emission of the atmosphere.

Execution of governance standards: The treated exhaust emissions meet the relevant emission limits in the Emission Standards for Volatile Organic Compounds in Surface Coating (Automobile Manufacturing Industry) ( DB44/816-2010 ).