A method for producing desulfurization and denitrification activated carbon

Abstract

The invention relates to a method for producing activated carbon for desulfuration and denitration. The method comprises the following steps: S1, mixing bituminous coal, coking coal, semi-coke and bentonite, so as to form a first material, and crushing and milling the first material into a second material; S2, mixing and stirring the second material and an adhesive, so as to form a third material,and pressing the third material to a granular fourth material; S3, performing dry distillation carbonization on the fourth material, so as to form a five material; S4, performing activating reactionon the fifth material, so as to obtain the activated carbon for desulfuration and denitration. The produced activated carbon can effectively improve the removal rate for oxynitride through adding of the bentonite into a mixed material of the bituminous coal, coking coal and semi-coke and processes of milling, kneading formation, carbonization and activation. The activated carbon produced through the formula can effectively solve the problem that the existing activated carbon for desulfuration and denitration is low in removal rate of oxynitride, and ensures that emitted flue gas is within an emission range of a new standard or even lower.

Description

technical field [0001] The invention relates to a method for producing activated carbon, in particular to a method for producing desulfurization and denitrification activated carbon. Background technique [0002] my country's main energy is provided by coal combustion, especially the nitrogen oxides in the flue gas produced by coal-fired power plants and steel plants have caused great pollution to the air. Activated carbon materials have potential application prospects in different fields due to their abundant sources of raw materials, low manufacturing costs, various modification methods, and good desulfurization and denitrification performance under suitable reaction conditions. The desulfurization and denitrification performance of activated carbon materials not only depends on their pore structure, but also is affected by the surface chemical properties. However, the existing porous carbon materials generally have disadvantages such as low adsorption capacity and low de...

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Problems solved by technology

However, the existing porous carbon materials generally have disadvantages such as low adsorption capacity and low desulfurization and denitrification efficiency.

At the same time, with the strengthening of environmental protection, the original flue gas emission standard stipulates that the emission standard of nitrogen oxides in flue gas is 240mg / m 3 , and now the emission standard stipulated in the new standard is 200mg / m 3 , so the existing activated carbon has been difficult to further reduce the content of pollutants in the flue gas

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