"FGD系统描述及工艺流程概要PPT教案"

The FGD system is a typical wet flue gas desulfurization process that is used to remove sulfur dioxide (SO2) from flue gas emissions. The process involves several key components including gas handling, limestone preparation and slurry supply, absorption tower, gypsum dewatering, process water and wastewater treatment. In the gas handling stage, the flue gas is treated and SO2 is absorbed using a series of equipment such as boilers, air preheaters, and absorbers. The gas is then discharged through the chimney after the SO2 is absorbed. Limestone or lime powder is prepared and supplied to the system for the absorption of SO2 in the absorption tower. The reaction products are then processed to produce gypsum, which is dewatered and transported using conveyors and belt filters. Process water is used in various stages of the FGD system and needs to be treated and recycled to minimize water usage and wastewater discharge. Wastewater generated from the system is treated to meet environmental regulations before being discharged. Overall, the FGD system is an essential technology for reducing air pollution and improving air quality by removing harmful pollutants such as SO2 from industrial emissions. The process involves a series of interconnected stages that work together to achieve efficient removal of pollutants while minimizing environmental impact.