Preparation method of flue gas denitration catalyst

A catalyst and flue gas technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high equipment operating costs, short life, high catalyst cost, etc., to achieve low cost and high degree of coalification Low, cheap effect

Inactive Publication Date: 2010-07-07
王向明
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Problems solved by technology

The key obstacle is the high cost of the catalyst, the short life, the flue gas temperature is required to be 300-400 degrees, and the equipment operation cost is high

Method used

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  • Preparation method of flue gas denitration catalyst
  • Preparation method of flue gas denitration catalyst
  • Preparation method of flue gas denitration catalyst

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preparation example Construction

[0016] In order to solve the problems of low efficiency, high price and high reaction temperature of the denitrification catalyst in the prior art, the present invention has produced a catalyst with lignite as the main raw material and high denitrification efficiency. The technical solution adopted is: a flue gas The preparation method of denitrification catalyst, including the processing technology and method of lignite semi-coke, comprises the following steps and sequence:

[0017] 1) Using lignite as raw material to prepare lignite semi-coke,

[0018] 2) Mix lignite semi-coke, coking coal and coal tar by weight percentage 47-75%: 10-35%: 5-24%, shape, dry, and make active coke,

[0019] 3) Adding an activator to further activate the active coke to make an optimized active coke.

[0020] In the technical scheme of the embodiments of the present invention, the activator is an inorganic salt activator, such as Fe 2 (SO 4 ) 3 , or FeSO 4 , or CuSO 4 , the specific treatme...

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Abstract

The invention discloses a preparation method of flue gas denitration catalyst, which solves the problem of expensive denitration catalyst and low denitration efficiency in the prior art. The adopted technical scheme is as follows: the method comprises the processing process and method of lignite char, which comprise the following steps and sequence: preparing the lignite char through using lignite as raw material, according to weight percentage of 47-75% :10-35%:5-24%, mixing, forming, drying the lignite char, the lignite, and the coal tar to prepare active coke, adding the enhancer to the active coke for further activation, in order to prepare the optimized active coke. The invention uses the lignite as main raw material, uses the inorganic salt or metal oxide as the enhancer; the advantages of the invention are as follows: the manufacturing cost is low, and the product catalytic effect is good.

Description

technical field [0001] The invention relates to a preparation method of active coke in the flue gas denitrification technology of industrial furnaces, in particular to a preparation method of a denitrification catalyst used in the purification process of flue gas produced in thermal power plants and steel sintering processes. Background technique [0002] Coal is the most important energy source in my country, which determines that my country's air pollution is soot-type pollution, and the main pollutants are dust, SO 2 , NO X . According to statistics, 70% of my country's air pollution emissions come from coal combustion, of which the amount of smoke and dust emitted by coal combustion, SO 2 , NO X Accounting for 60%, 87% and 67% of my country's total emissions respectively. SO in flue gas 2 Is one of the important factors causing environmental pollution, nitrogen oxides NO X It has great damage to the environment. It can be converted into nitrous acid and nitric acid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/00B01J37/02B01J27/053B01J27/055B01J37/04B01J23/26B01J23/72B01J35/10B01D53/56B01D53/86
Inventor 王向明王敏
Owner 王向明
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