Flue gas pollutant near-zero emission full-dry treatment system based on ultra-clean electric precipitation

Abstract

The invention provides a smoke pollutant near-zero-emission full-dry-method treatment system based on ultra-clean electric precipitation. The smoke pollutant near-zero-emission full-dry-method treatment system is composed of a smoke system, an activated carbon system and a desulfurization byproduct preparation system. The flue gas system comprises a flue system, an ultra-clean electric precipitation system, a heat exchange system and a nitrogen oxide circulating system; the activated carbon system comprises a desulfurization and denitrification system, an activated carbon desorption and regeneration system and an activated carbon transportation system. The flue gas is subjected to dust removal, desulfurization, denitration and other processes, so that near-zero emission of pollutants is achieved, and no secondary pollution is generated after the whole flue gas treatment process is finished; the desorbed desulfurization by-product can be prepared into commercial salt or sulfuric acid for sale according to requirements, and the desorbed nitric oxide returns to the hearth to inhibit the generation of new nitric oxide. The system integrates various flue gas pollutant treatment technologies such as ultra-clean electric precipitation, activated carbon low-temperature adsorption desulfurization and denitrification, activated carbon desorption regeneration and nitrogen oxide furnace returning, the flue gas pollutant treatment efficiency is improved, meanwhile, secondary pollutants are thoroughly eliminated, and full-dry-method near-zero emission of flue gas pollutants is achieved.