Preparation method of catalyst material for catalytic oxidation treatment of ammonia-containing waste gas

A catalytic oxidation and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as poor catalytic performance, improve diffusion and transfer limits, increase The effect of stable performance and large catalytic specific surface area

Active Publication Date: 2021-05-28
江苏优尚环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of poor catalytic performance of existing ammonia-containing waste gas oxidation catalyst materials, the application provides a preparation method of a catalyst material for catalytic oxidation treatment of ammonia-containing waste gas, which adopts the following technical scheme:

Method used

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  • Preparation method of catalyst material for catalytic oxidation treatment of ammonia-containing waste gas

Examples

Experimental program
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preparation example 1

[0037] Weigh 45g of deionized water, 6g of 0.5mol / L sulfuric acid, 10g of 0.1mol / L HCl, 15g of 15% copper sulfate solution, and 1g of phenolsulfonic acid in a stirring device, stir and mix them and let stand for 6 hours to obtain electroplating Liquid 1;

[0038] Weigh 45g of deionized water, 15g of 10% solid content silica sol, 3g of aluminum isopropoxide and 1g of phosphoric acid and stir and mix respectively to obtain a mixed solution and mix tetraethylammonium hydroxide, di n-Propylamine and the mixed solution were stirred and mixed, and treated in an oil bath at 45° C. for 3 hours, left to cool and collected to obtain coating solution 1 .

preparation example 2

[0040] Weigh 47g of deionized water, 7g of 0.5mol / L sulfuric acid, 12g of 0.1mol / L HCl, 17g of 15% copper sulfate solution, and 1g of phenolsulfonic acid in a stirring device, stir and mix and let it stand for 7 hours to obtain electroplating Liquid 2;

[0041] Weigh 47g of deionized water, 17g of 10% solid content silica sol, 4g of aluminum isopropoxide and 1g of phosphoric acid and stir and mix respectively to obtain a mixed solution and mix tetraethylammonium hydroxide, di n-Propylamine and the mixed solution were stirred and mixed, placed in an oil bath at 50°C for 4 hours, cooled and collected to obtain coating solution 2.

preparation example 3

[0043] Weigh 50g of deionized water, 8g of 0.5mol / L sulfuric acid, 15g of 0.1mol / L HCl, 20g of 15% copper sulfate solution, and 2g of phenolsulfonic acid in a stirring device, stir and mix and let it stand for 8 hours to obtain electroplating Liquid 3;

[0044] Weigh 50g of deionized water, 20g of silica sol with a solid content of 10%, 5g of aluminum isopropoxide and 2g of phosphoric acid and stir and mix respectively to obtain a mixed solution and mix tetraethylammonium hydroxide, di n-Propylamine and the mixed solution were stirred and mixed, and treated in an oil bath at 55° C. for 5 hours, cooled and collected to obtain the coating solution 3 .

[0045] Preparation example 3

[0046] Weigh 45g of deionized water, 6g of 0.5mol / L sulfuric acid, 10g of 0.1mol / L HCl, 15g of 15% nickel sulfate solution, and 1g of phenolsulfonic acid in a stirring device, stir and mix them and let stand for 6h to obtain electroplating Liquid 4.

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Abstract

The invention relates to the field of waste gas treatment, and particularly discloses a preparation method of a catalyst material for catalytic oxidation treatment of ammonia-containing waste gas. The preparation method comprises the preparation steps of S1, preparing a porous matrix; S2, preparing coating liquid; and S3, preparing the catalyst. According to the invention, a polyurethane foam material is adopted as a template, a foam metal base material with an excellent pore structure is prepared through electroplating coating and serves as a catalyst material carrier, and on the basis, a crystallization coating scheme is adopted to replace a traditional coating scheme, so that the phenomenon of diffusion transfer limitation in the catalyst material is effectively improved. After waste gas is adsorbed by the catalyst, ammonia gas on the surface active site directly reacts with oxygen to generate nitrogen and water, so that the ammonia-containing waste gas is effectively subjected to oxidation catalytic reaction, and the catalytic performance of the ammonia-containing waste gas oxidation catalyst material is improved.

Description

technical field [0001] The present application relates to the field of waste gas treatment, more specifically, it relates to a method for preparing a catalyst material for catalytic oxidation treatment of ammonia-containing waste gas. Background technique [0002] Ammonia is extremely harmful to humans. Inhaling a small amount will affect the respiratory tract and nervous system, and in severe cases, shock or even death. Because ammonia is an alkaline gas, it can also burn the exposed skin and eyes of the human body. The harm of ammonia gas to the environment cannot be ignored. Ammonia gas will react with sulfur dioxide, nitrogen dioxide and VOCs in the atmosphere to form a large amount of aerosol particles, such as ammonium sulfate and ammonium nitrate. These ammonium salts are important for PM2.5. Composition, while PM2.5 is regarded as three major air pollutants (PM2.5, PM10 and O 3 ) is the main component of smog, which has threatened the ecological balance. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/00B01J23/755B01D53/86B01D53/58
CPCB01J23/755B01J29/00B01D53/8634Y02A50/20
Inventor 吴丞陆勇兵吴守国
Owner 江苏优尚环境工程有限公司
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