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Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method

A denitrification catalyst and polyethylene oxide technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as unsatisfactory porosity, low catalytic efficiency, and short service life

Active Publication Date: 2011-07-06
江苏万德环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing denitrification catalysts have the disadvantages of low strength, easy pulverization, short service life, difficult molding and demoulding during the production process, unsatisfactory porosity, low catalytic efficiency, large catalyst consumption, and high cost.

Method used

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  • Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method
  • Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method
  • Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method

Examples

Experimental program
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Effect test

preparation example 1

[0034] Add 720 liters of deionized water and 93.6 kg of monoethanolammonium (MEA) to the ammonium metavanate dissolving tank, heat it to 80°C by steam, then add 75.2 kg of ammonium metavanate powder (AMV), and continue to mix the liquid by steam Heating was carried out until the temperature of the ammonium metavanadate dissolution tank was 98° C., and aging was maintained at this temperature for 30 minutes. The temperature of the mixed material was then adjusted to 60°C. Finally, the volume of the solution was adjusted to 900 liters with deionized water to obtain an ammonium metavanate solution.

preparation example 2

[0036] Add 600 liters of deionized water and 100 kg of monoethanolammonium (MEA) to the ammonium metavanate dissolving tank, heat it to 70°C by steam, then add 80 kg of ammonium metavanate powder (AMV), and continue to pass steam to the mixed liquid Heating was carried out until the temperature of the ammonium metavanadate dissolution tank was 95° C., and aging was maintained at this temperature for 25 minutes. The temperature of the mixed material was then adjusted to 55°C. Finally, the volume of the solution was adjusted to 650 liters with deionized water to obtain an ammonium metavanate solution.

preparation example 3

[0038] Add 900 liters of deionized water and 80 kg of monoethanolammonium (MEA) to the ammonium metavanate dissolving tank, heat it to 85°C by steam, then add 70 kg of ammonium metavanate powder (AMV), and continue to pass steam to the mixed liquid Heating was carried out until the temperature of the ammonium metavanadate dissolution tank was 90° C. and aged at this temperature for 45 minutes. The temperature of the mixed material was then adjusted to 65°C. Finally, the volume of the solution was adjusted to 1000 liters with deionized water to obtain an ammonium metavanitate solution.

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Abstract

The invention relates to a denitrifying catalyst and a preparation method thereof as well as a flue gas denitrifying method. The preparation method of the denitrifying catalyst comprises the following steps: mixing, aging, drying and calcining, wherein in the mixing step, ITAC-14-7A, CTAC-115, stearic acid, deionized water, ammonia, lactic acid, glass fiber, wood pulp, water, an ammonium metavanadate solution, carboxymethyl cellulose and polyoxyethylene are mixed by a mixer. The denitrifying catalyst prepared by the method has high-efficiency denitrifying efficiency.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a flue gas denitrification catalyst [0002] method of preparation. Background technique [0003] my country's coal consumption is large, and the environmental pollution caused by it is particularly serious, among which smoke, SO 2 And, NOx is the main pollutant. The current situation of NOx and nitrogen oxide emissions from coal-fired power plants in my country is that the emissions were 2.65 million tons in 1995, 4.69 million tons in 2000, 5.2 million tons in 2002, and are expected to reach 5.5 million tons by 2011. The most important pollutants emitted. NOx is one of the main sources of acid rain and a precursor of photochemical smog. At the same time, it will cause great harm to human health and the ecological environment. [0004] Currently, the most effective NOx control technology for coal-fired power plants is the Selective Catalytic Reduction (SCR) process, and t...

Claims

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Application Information

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IPC IPC(8): B01J23/30B01D53/86B01D53/56
Inventor 许德富赵毅于光喜王飞许峰马以青颜少云
Owner 江苏万德环保科技有限公司
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