This paper introduces the flue gas purification of sludge and garbage incineration, the flue gas treatment process of garbage incineration, the process selection, technical principle and process design of the system flow of garbage incineration flue gas treatment company. Through analyzing the flue gas data, this paper discusses the application of sodium based rotary spray drying (SDA) desulfurization method and low-temperature selective non catalytic reduction (SNCR) denitrification process in the flue gas purification of garbage power generation incineration. The combination of the two can achieve the synergistic removal of sulfur dioxide and nitrogen oxides in the flue gas of waste incineration power generation, ensuring that the flue gas meets the emission standards and the system operates stably, thereby providing reference for the engineering practice of waste incineration flue gas purification.

In recent years, China's economy has continued to develop steadily, while the amount of waste has also rapidly increased. With the development and progress of our society, many cities have built or plan to build domestic waste incineration plants, using the method of waste incineration to generate electricity to treat difficult to treat waste. This not only turns waste into treasure, but also achieves the harmless and resourceful treatment of waste.
The purification of waste incineration flue gas is an important part of waste to energy projects. At present, the flue gas generated after garbage incineration contains a large amount of particulate matter, acidic gases such as HCl and SO2, heavy metals, and harmful substances such as dioxins. The flue gas purification process mainly consists of a combination of deacidification and dust removal systems, ultimately achieving the goal of flue gas deacidification and dust removal.