FLUE GAS MULTI-POLLUTANT COLLABORATIVE PURIFICATION PROCESS METHOD AND APPARATUS

摘要

A flue gas multi-pollutant collaborative purification process method and apparatus, comprising: injecting ammonia gas into original flue gas; mixing the ammonia gas with the original flue gas; the mixed gas of the ammonia gas and the original flue gas passing through a desulfurization adsorption treatment apparatus (1), so as to achieve fine desulfurization treatment of the original flue gas; after the fine desulfurization, the flue gas passing through an SCR denitration treatment apparatus (2), so as to achieve denitration treatment of the flue gas; and the flue gas after the denitration treatment passing through a CO catalytic oxidation treatment apparatus (3), so as to achieve CO removal treatment of the flue gas. Before the flue gas is denitrified, the flue gas is subjected to the fine desulfurization treatment, so as to prevent sulfur dioxide from poisoning an SCR catalyst, improve the efficiency of desulfurization and denitration, reduce the production cost of a production enterprise, and improve product quality.