A method for desulfurization and denitrification of flue gas from a coal-fired power plant

Abstract

The invention relates to a treatment method for flue gas desulfurization and denitrification in a coal-fired power plant, which includes a workbench, a collection device and a processing device. tank, air intake pipe, filter frame, feed pipe, motor, stirring frame and valves, the present invention pre-filters the flue gas through the processing device, and cleans the filter parts to prevent the filter parts from accumulating too much impurities on the surface, thereby As a result, its service life and use effect are reduced, the flue gas and the reagent are completely reacted, the liquid after the reaction is filtered through the collection device, and the surface of the filter plate is cleaned to prevent excessive accumulation of sediment on the surface of the filter plate, resulting in The filter plate is clogged, which affects the filtering effect.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment in power plants, in particular to a desulfurization and denitrification treatment method for flue gas in coal-fired power plants. Background technique [0002] Coal accounts for more than 70% of my country's energy structure. Coal combustion will produce a series of air pollutants such as sulfur dioxide and nitrogen oxides, which in turn will cause environmental problems such as acid rain and photochemical smog. Therefore, the national environmental department requires that newly-built coal-fired units must simultaneously build desulfurization and denitrification facilities to improve the environmental pollution of power plants. [0003] In the process of desulfurization and denitrification treatment of flue gas, due to the physical and chemical structure limitations of flue gas, the following problems exist in the actual operation process: [0004] (1) Traditional flue gas desulfurizat...

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Problems solved by technology

[0004] (1) Traditional flue gas desulfurization and denitrification treatment equipment needs to filter the treated flue gas for the first time in the process of flue gas treatment. The surface of the filter parts is prone to accumulation of solid particles, which can easily cause the use of filter parts. Reduced lifetime, resulting in high frequency replacement of filter parts, resulting in higher tooling costs

[0005] (2) Traditional flue gas desulfurization and denitrification treatment equipment needs to filter the reacted liquid during the process of flue gas treatment. It is very easy to block the filter plate due to more sediment on the surface of the filter plate, and eventually affect filter quality

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