Principle of desulfurization process technology:
The flue gas enters the wet absorption tower of the desulfurization device and comes into counter-current contact with the alkaline limestone slurry droplets sprayed from top to bottom, where the acidic oxidation SO2 and other pollutants such as HCL and HF are absorbed, and the flue gas is fully purified; the slurry after absorbing SO2 reacts to generate CaSO3, which is forced to oxidize and crystallize in situ to generate CaSO4?2H2O. After dehydration, a commercial-grade desulfurization by-product - gypsum is obtained , and ultimately achieve comprehensive treatment of sulfur-containing flue gas.
Power plant desulfurization process flow chart:
Extended information:
Desulfurization generally refers to the removal of sulfur in fuel before combustion and the removal of flue gas before emission. desulfurization process. It is one of the important technical measures to prevent and control air pollution.
At present, there are generally three desulfurization methods: pre-combustion, during combustion and post-combustion desulfurization. With the development of industry and the improvement of people's living standards, the thirst for energy is also increasing. SO2 in coal-fired flue gas has become the main cause of air pollution. Reducing SO2 pollution has become a top priority in today's atmospheric environment management. Many flue gas desulfurization processes have been widely used in industry, and they also have important practical significance for the treatment of exhaust gases from various boilers and incinerators.
Reference: Desulfurization-Baidu Encyclopedia