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Denitration catalyst and preparation method thereof

A technology of denitrification catalyst and molding aid, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problem that the strength of the catalyst cannot meet the actual use requirements, so as to improve the anti-breakage ability and avoid breakage , Improve the effect of mechanical properties and strength

Active Publication Date: 2011-10-26
上海瀚昱环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the strength of the catalyst in the prior art cannot meet the requirements of actual use, the present invention provides a denitration catalyst with high strength and good mechanical properties and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The denitration catalyst described in this embodiment includes the following components by weight:

[0041] 40 parts of nano titanium dioxide;

[0042] 6 parts of nano silicon dioxide;

[0043] 0.5 parts of ammonium metavanadate;

[0044] 0.5 parts of ammonium paratungstate;

[0045] A.K sugar 0.5 part;

[0046] 3 parts methylcellulose.

[0047] The preparation method of described denitration catalyst comprises:

[0048] (1) Prepare an ethanolamine solution with a mass concentration of 12% and heat the ethanolamine solution to 60°C;

[0049] (2) Add 0.5 parts by weight of ammonium metavanadate and 4 parts by weight of ammonium paratungstate to the ethanolamine solution and heat to 90°C, then stir until the ammonium metavanadate and ammonium paratungstate are dissolved to obtain a ready-to-use mixed solution;

[0050] (3) Fully mix 40 parts by weight of nano-titanium dioxide, 6 parts by weight of nano-silicon dioxide, 20 parts by weight of deionized water and 5 par...

Embodiment 2

[0055] The denitration catalyst described in this embodiment includes the following components by weight:

[0056] 45 parts of nano-titanium dioxide;

[0057] 8 parts of nano silicon dioxide;

[0058] 4 parts of ammonium metavanadate;

[0059] 4 parts of ammonium paratungstate;

[0060] Europium 0.8 parts;

[0061] A.K sugar 2 parts;

[0062] 0.5 part of methyl cellulose;

[0063] Glass fiber silk 2.5 parts.

[0064] The preparation method of described denitration catalyst comprises:

[0065] (1) Prepare an ethanolamine solution with a mass concentration of 13% and heat the ethanolamine solution to 90°C;

[0066] (2) Add 4 parts by weight of ammonium metavanadate and 6 parts by weight of ammonium paratungstate to the ethanolamine solution and heat to 96°C, then stir until the ammonium metavanadate and ammonium paratungstate dissolve, then add 0.1 parts by weight of rare earth Element europium, obtains the ready-to-use mixed solution;

[0067] (3) Fully mix 45 parts by...

Embodiment 3

[0073] The denitration catalyst described in this embodiment includes the following components by weight:

[0074] 45 parts of nano-titanium dioxide;

[0075] 8 parts of nano silicon dioxide;

[0076] 4 parts of ammonium metavanadate;

[0077] 4 parts of ammonium paratungstate;

[0078] Europium 0.3 parts;

[0079] Erbium 0.5 part;

[0080] A.K sugar 2 parts;

[0081] 1.5 parts of methylcellulose;

[0082] 3.5 parts of glass fiber filaments.

[0083] The preparation method of described denitration catalyst comprises:

[0084] (1) Prepare an ethanolamine solution with a mass concentration of 13% and heat the ethanolamine solution to 80°C;

[0085] (2) Add 4 parts by weight of ammonium metavanadate and 6 parts by weight of ammonium paratungstate to the ethanolamine solution and heat to 95°C, then stir until the ammonium metavanadate and ammonium paratungstate dissolve, then add 0.8 parts by weight of rare earth Element europium and erbium, each of which is 4 parts by we...

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Abstract

The invention provides a denitration catalyst and a preparation method thereof. The denitration catalyst comprises: by weight, 40 to 45 parts of nano-titanium dioxide, 6 to 8 parts of nano-silica, 0.5 to 4 parts of ammonium metavanadate, 0.5 to 4 parts of ammonium paratungstate, 0.5 to 2 parts of Acesulfame K (A.K) sugar, and 3 to 5 parts of one or two moulding auxiliary agents. In the invention,trough the introduction of A.K sugar, the denitration catalyst has an excellent denitration performance and through the introduction of rare earth elements, an anti-poisoning performance of the denitration catalyst is improved greatly; the A.K sugar in the denitration catalyst has a binding effect and can improve effectively a mechanical property and a strength of the denitration catalyst thus ananti-crushing property of the denitration catalyst is improved and the problem that a denitration catalyst adopted by the prior art can be crushed frequently in use is solved.

Description

technical field [0001] The invention relates to the field of flue gas denitration, in particular to a denitration catalyst and a preparation method thereof. Background technique [0002] Nitrogen oxides (NO x ) is a general term for various compounds of nitrogen and oxygen, including N 2 O, NO, NO 2 , N 2 o 4 , N 2 o 3 and N 2 o 5 Wait. NO x One of the common pollutants in the atmosphere, NO x As a primary pollutant, it will cause harm to human health. It can irritate people's eyes, nose, throat and lungs, and easily cause people to suffer from respiratory diseases. More seriously, NO x There will also be a variety of secondary pollution, such as acid rain and photochemical pollution. [0003] To reduce NO x People began to pay more and more attention to the pollution problems caused by NO x Research on control methods. NO control in the prior art x There are two main types of emission methods, one is to control NO in the process of fuel combustion x genera...

Claims

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Application Information

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IPC IPC(8): B01J23/30B01J35/04B01D53/56B01D53/86
Inventor 刘少光陈成武吴进明
Owner 上海瀚昱环保材料有限公司
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