Exhaust gases emitted from various industrial furnaces in the metallurgical, mechanical, chemical, and electric power industries are not only high in temperature, but also contain a large amount of dust and harmful gases, which is one of the main factors causing environmental pollution. Under high temperature conditions, due to the large change in the viscosity of the exhaust gas, the humidity is greatly reduced, and the aggregation of fine particles is greatly reduced, so the separation of the particles is difficult. The bag filter can not withstand the high temperature of the exhaust gas, and the heat energy cannot be utilized. The electrostatic dust removal has problems of high disposable investment, large floor space and insulation. At present, most of the high-temperature dust-containing exhaust gas treatment methods in China are through water condensation, reducing the high-temperature exhaust gas to about 200, and then using a bag filter to remove dust, which not only increases the investment and operating costs of the condensing equipment, but also causes a large amount of heat energy to be lost. Therefore, the new high-temperature exhaust gas dust removal technology is an important issue that needs to be developed.
