High-efficiency flue gas desulfurization and denitrification catalyst and preparation method thereof

Abstract

The invention discloses a high-efficiency flue gas desulfurization and denitrification catalyst and a preparation method thereof. The high-efficiency flue gas desulfurization and denitrification catalyst is prepared from 8-12 wt% of active components, 5-8 wt% of cocatalyst and 80-87 wt% of carrier; the active components comprise yttrium oxide, tricobalt tetroxide, manganese dioxide and aluminum chloride; the cocatalyst is ferric oxide or nickel oxide; the carrier is modified activated carbon; the specific surface area of a molecular sieve is 350-500m<2> / g, and the pore diameter is 0.8 to 1.2 mL / g. The catalyst disclosed by the invention takes the yttrium oxide, the tricobalt tetroxide, the manganese dioxide and the aluminum chloride as the active components, the ferric oxide or the nickel oxide as the cocatalyst and the modified activated carbon as the carrier, and has a good effect on desulfurization and denitrification, can remove sulfur and nitrate in flue gas, and can be widely used for desulfurization and denitrification of large-scale flue gas emission enterprises such as iron and steel enterprises, bituminous coal power plants, bituminous coal furnaces and metallurgical industry.

Description

technical field [0001] The invention relates to the field of desulfurization and denitrification, in particular to a high-efficiency flue gas desulfurization and denitrification catalyst and a preparation method thereof. Background technique [0002] Sulfur dioxide and nitrogen oxides are one of the main air pollutants. They are the culprits of acid rain and acid fog. They interact with hydrocarbons to form photochemical smog, which poses a serious threat to human biological health. The removal of sulfur dioxide and nitrogen oxides from coal-burning flue gas and motor vehicles is the main task of air pollution control in my country at present. [0003] At present, the common flue gas desulfurization and denitrification technologies mainly include electron beam method, activated carbon method and aluminum-based copper method. Although electron beam hair has been industrialized, due to its high operating costs, it is difficult to promote it on a large scale in China, and it i...

AI Technical Summary

Problems solved by technology

Although electron beam hair has been industrialized, due to its high operating costs, it is difficult to promote it on a large scale in China, and it is difficult for existing catalysts to have high desulfurization and denitrification rates at the same time