Desulfurization catalyst of limestone-gypsum wet coal-fired boiler flue gas desulfurization process

Abstract

The present invention relates to a desulfurization catalyst of a limestone-gypsum wet coal-fired boiler flue gas desulfurization process. The desulfurization catalyst comprises the following raw materials, by weight: 78-85% of CH3COONH4, 12-20% of NH4C1, 0.3-1% of alcohol polyoxyethylene ether phosphoric monoester, 0.5-1.5% of alkyl alcohol ether carboxylate, and 0.3-1% of fatty alcohol ethyl oxide. The desulfurization catalyst has the following beneficial effects that: desulfurization efficiency of the limestone-gypsum wet coal-fired boiler flue gas desulfurization (FGD) process is economically and effectively improved, a SO2 pollutant emission concentration is reduced, a SO2 pollutant emission concentration of the coal-fired boiler achieves requirements of the newly revised emission standard of air pollutants for thermal power plants (GB13223-2011) (hereinafter short for new standard), and environment protection is achieved.

Description

technical field [0001] The invention relates to a desulfurization catalyst for the flue gas desulfurization process of a limestone-gypsum wet coal-fired boiler. Background technique [0002] The "limestone-gypsum" wet coal-fired boiler flue gas desulfurization (FGD) process has become a coal-fired power plant in my country due to its large amount of flue gas treatment per unit time, no secondary pollution, mature technology, rich sources of desulfurizers and low prices. The preferred desulfurization process, more than 90% of the desulfurization systems of coal-fired power plants in my country adopt the "limestone-gypsum" wet coal-fired boiler flue gas desulfurization (FGD) process. In recent years, with the continuous improvement of national air emission requirements for coal-fired thermal power enterprises, the desulfurization efficiency and SO 2 The emission of the power plant has become an important assessment index for the normal production of the power plant, especially...

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Problems solved by technology

This kind of auxiliary material has a certain effect in temporary emergency, but long-term use has serious hazards: (1) the synergistic time is short, the efficiency is low, and it cannot meet the long-term requirements of the power plant for environmental protection; A certain degree of corrosiveness also leads to "poisoning" of the slurry; (3) "aerosol" is easy to be produced, which blocks the demister, pipe and nozzle of the desulfurization system; (4) some products have a strong smell, causing personal injury and polluting the air

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