Treatment of tail gas by industrial sludge drying equipment

Industrial sludge drying equipment can effectively dewater and dry sludge with high moisture and viscosity. The equipment has the advantages of simple operation, strong processing capacity, high drying efficiency and good drying effect, so it is favored by the majority of users. With the rapid economic development and the continuous improvement of national environmental protection policies, users who purchase or use industrial sludge drying equipment have certain indicators for the treatment of tail gas produced by the equipment.

Generally, the tail gas produced by the industrial sludge drying equipment contains certain moisture, but if the moisture content of the tail gas reaches more than 15%, the dust removal equipment is used to treat the tail gas condensation. Especially when coal is used as heat source to dry sludge, the tail gas contains high sulfur, which will not only improve the condensation temperature, but also cause certain corrosion to the dust removal equipment and reduce the service life of the equipment. In order to avoid the corrosion of sludge drying equipment, the temperature of tail gas should be increased to avoid the damage of sulfur-containing tail gas to the equipment. If you want to meet the emission requirements, you need to remove the sulfur from the tail gas. Desulfurization equipment is usually used to remove the sulfur in the tail gas, and then it is discharged into the atmospheric environment to reduce the harm to operators and the environment.

The tail gas of industrial sludge drying equipment also contains dust particles. When the dust concentration reaches a certain value, it will cause environmental pollution. Due to the negative pressure operation of industrial sludge drying equipment in the drying process, the air volume is high, so the dust concentration in the tail gas is relatively high. Therefore, a dust removal device is added at the tail of the drying production line to filter and purify the dust. The dust removal equipment for long-term users includes bag filter, pulse dust collector, electrostatic precipitator, cyclone dust collector, water film dust collector, etc. The tail gas filtered by dust removal equipment can usually meet the national emission standards. Users can select the appropriate dust removal equipment according to the production needs and the opinions of the manufacturers.