This is far less active in waste gas treatment than in waste water treatment, because the traditional waste gas treatment methods, such as electrostatic precipitator, cyclone dust removal, and water film dust removal, can achieve very good results in waste gas treatment, for example, the electrostatic precipitator can remove 98% of pollutants. But that doesn't mean Activated carbon In this useless place, activated carbon once became a research hotspot in the removal of strong carcinogenic aromatic compounds, but in the past two years, people have only done a few researches on it, and the research direction overlaps with wastewater treatment (mainly the application of activated carbon fiber).
Application of activated carbon fiber in waste gas treatment. The coating industry in China uses a large number of organic solvents in the production process, mainly including triphenyl (benzene, toluene, xylene), styrene cyclohexanone, acetone, turpentine, methanol, ethanol, propanol, butanol, solvent gasoline, methyl acetate, ethyl acetate, butyl acetate, etc. The volatilization of these organic solvents not only wastes resources, but also seriously endangers the health of production workers. The specific surface area of Jin Yuquan and others is 1200m2/g. The activated carbon fiber (ACF) with a single layer thickness of 2mm of fiber flocs is used to treat benzene waste gas. When the filtration rate is below 0.20m/s, the purification efficiency of ACF for benzene, toluene, xylene and their mixtures is up to 90%. In addition, some people designed a three box adsorption system in the treatment project of dichloromethane waste gas. When the waste gas flow is 10000m3/h and the concentration of dichloromethane in the waste gas is 3000mg/m3, the equipment has been operating well after half a year, and the adsorption efficiency has been maintained at more than 97%, greatly improving the atmospheric environment, with annual net income of 7540000 yuan. The traditional activated carbon adsorption removal efficiency is about 70%.
Application of activated carbon in waste gas treatment. As is known to all, coal contributes a lot to the energy consumption in China and produces a lot of exhaust gas. Coal mainly produces SO2 and NOX waste gas, which are the main reasons for acid rain. Two of the three major acid rain areas in China belong to soot type acid rain, and one (acid rain area in South China) belongs to soot automobile exhaust compound type acid rain. Controlling the emission of coal exhaust is of great significance to the environment of China. The modified activated carbon material has the advantages of good desulfurization and denitrification treatment effect, low investment and operation cost, and easy utilization, which has attracted people's attention. The desulfurization and denitration of modified activated carbon materials firstly use the adsorption performance of activated carbon materials to physically adsorb the polluted gases SO2 and NOX in the flue gas on the surface of activated carbon materials, and under the catalysis of functional groups or supported metals on the surface of activated carbon materials, convert SO2 and NOX into SO3 and pollution-free N2 or O2. In the presence of water vapor, SO3 will combine with water to generate sulfuric acid for recovery.
