SCR (Selective Catalytic Reduction) denitration reactor using concrete smoke exhaust flue as body

Abstract

The invention discloses an SCR (Selective Catalytic Reduction) denitration reactor using a concrete smoke exhaust flue as a body. The reactor is characterized by consisting of the concrete smoke exhaust flue, a steel structure flue cover plate, an ammonia spraying grid, a fixing bracket of the ammonia spraying grid, a sound wave soot blower, a catalyst frame and a catalyst module, the concrete smoke exhaust flue is a horizontal flue, an ammonia spraying grid, a sound wave soot blower, a catalyst frame and a catalyst module are sequentially arranged at the 300-400 DEG C position in the flue in the horizontal flowing direction of smoke, and the catalyst module is horizontally arranged. the steel structure flue cover plate coversholes of the concrete smoke exhaust flue over the catalyst frame and the catalyst module; the problems that a conventional SCR denitration reactor is large in size, high in equipment manufacturing cost, large in reactor pressure loss, high in site construction difficulty, long in construction period and the like are solved. Ash removal and replacement of the catalyst module are convenient, the pressure loss of the catalyst is small, the reaction efficiency is high, and the expected effect is achieved.

Description

technical field [0001] The invention relates to the technical field of flue gas denitrification, in particular to an SCR denitrification reactor using a concrete exhaust flue as a main body; it is an SCR denitrification reactor related to a selective catalytic reduction SCR denitrification process, which is applied to concrete smoke exhaust Flue, SCR out of stock occasions with large flue gas flow and high NOx concentration. Background technique [0002] At present, the selective catalytic reduction SCR denitrification process has become the mainstream technology for flue gas denitrification at home and abroad due to its high denitrification efficiency and stable performance. SCR denitrification is to reduce the nitrogen oxides in the flue gas to nitrogen and water by injecting ammonia into the flue gas under the action of a catalyst. The main equipment of the SCR denitrification process is the SCR reactor, whose main function is to carry the catalyst and ensure that the mi...

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Problems solved by technology

[0005] 1. The reactor has a large volume, complex internal structure, a large amount of steel, especially heat-resistant steel, and high equipment manufacturing costs;

[0006] 2. The flue gas is designed to flow vertically downwards. The inlet flue and the outlet flue need to be led from the original underground horizontal concrete flue to the reactor inlet and outlet respectively. There are many turns in the flue and the pressure loss of the reactor Large, need to increase the smoke exhaust fan;

[0007] 3. The inlet flue and the outlet flue need to be connected with the original underground horizontal concrete flue and the reactor body respectively. The site construction is difficult and the construction period is long

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