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A preparation method of denitrification honeycomb ceramic catalyst and the catalyst prepared therefrom

A denitration catalyst, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Wear, shorten the service life of the catalyst and other problems, to achieve the effect of high mechanical performance, large operating window, and extended service life

Active Publication Date: 2017-12-12
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet this requirement, the catalyst needs to be placed upstream of the dust collector and desulfurization unit, which makes the catalyst easily deactivated and worn, thereby shortening the service life of the catalyst
In addition V 2 o 5 It is highly toxic and seriously affects the environment and human health

Method used

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  • A preparation method of denitrification honeycomb ceramic catalyst and the catalyst prepared therefrom
  • A preparation method of denitrification honeycomb ceramic catalyst and the catalyst prepared therefrom
  • A preparation method of denitrification honeycomb ceramic catalyst and the catalyst prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Example 1 Composition for preparing honeycomb ceramic denitration catalyst

[0083] The composition consists of:

[0084] Active ingredients: manganese nitrate, tin tetrachloride pentahydrate, cerium nitrate hexahydrate and copper nitrate trihydrate;

[0085] Carrier: TiO 2 Powder;

[0086] Pore-forming agent: activated carbon;

[0087] Binder: hydroxypropylmethylcellulose (HMPC);

[0088] Reinforcing agent: powdered glass fiber, the particle size is less than 300 mesh;

[0089] pH adjuster: ammonia water;

[0090] Among them, TiO 2 :Mn 2+ :Sn 4+ : Ce 4+ : Cu 2+ The molar ratio is 100:20:5:5:10;

[0091] TiO 2 The mass ratio of powder to activated carbon, HPMC and powdered glass fiber is 100:4:0.6:4.

Embodiment 2

[0092] Example 2 Composition for preparing honeycomb ceramic denitration catalyst

[0093] The composition consists of:

[0094] Active ingredients: manganese nitrate, tin tetrachloride pentahydrate, cerium nitrate hexahydrate and nickel nitrate hexahydrate;

[0095] Carrier: TiO 2 and SiO 2 Powder, mass ratio 1:1;

[0096] Pore-forming agent: activated carbon;

[0097] Binder: hydroxypropylmethylcellulose (HMPC);

[0098] Reinforcing agent: powdered glass fiber, the particle size is less than 300 mesh;

[0099] pH adjuster: ammonia water;

[0100] Among them, (TiO 2 +SiO2 2 ):Mn 2+ :Sn 4+ : Ce 4+ : Ni 2+ The molar ratio is 100:20:10:10:10;

[0101] The mass ratio of carrier to activated carbon, HPMC and powdered glass fiber is 100:5:0.7:4.

Embodiment 3

[0102] Example 3Composition for preparing honeycomb ceramic denitration catalyst

[0103] The composition consists of:

[0104] Active ingredients: manganese nitrate, tin tetrachloride pentahydrate, cerium nitrate hexahydrate and ammonium molybdate tetrahydrate;

[0105] Carrier: TiO 2 and Al 2 o 3 Powder, mass ratio 1:1;

[0106] Pore-forming agent: activated carbon;

[0107] Binder: hydroxypropylmethylcellulose (HMPC);

[0108] Reinforcing agent: powdered glass fiber, the particle size is less than 300 mesh;

[0109] pH adjuster: ammonia water;

[0110] Among them, (TiO 2 +Al 2 o 3 ):Mn 2+ :Sn 4+ : Ce 4+ :Mo 6+ The molar ratio is 100:30:5:5:5;

[0111] The mass ratio of carrier to activated carbon, HPMC and powdered glass fiber is 100:5:0.6:5.

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Abstract

The invention provides a composition for preparing a honeycomb ceramic denitration catalyst, which is composed of an active component, a carrier, a pore-forming agent, a binder, a reinforcing agent and a pH regulator; wherein: the active component includes Mn salt, Sn Salt, Ce salt, and one or more other metal salts selected from Cu salt, Ni salt, W salt and Mo salt; The carrier includes TiO2; The molar ratio of the carrier and the active component is: carrier: Mn salt: Sn salt: Ce salt: the other metal salts = 100:10~40:3~15:3~15:5~20; the mass ratio of the carrier, pore-forming agent, binder and reinforcing agent 100:3~10:0.5~1:3~5; the pH regulator is ammonia water. The present invention also provides a preparation method for preparing a honeycomb ceramic denitration catalyst using the composition as a raw material and the prepared honeycomb ceramic denitration catalyst. The denitration catalyst provided by the invention has high low-temperature activity and high mechanical strength.

Description

technical field [0001] The invention belongs to the technical field of selective catalytic reduction and ceramic catalysts, and in particular relates to a method for preparing a honeycomb ceramic catalyst applicable to low-temperature flue gas denitrification and the prepared catalyst. Background technique [0002] NO x , often called gunpowder smoke (gas), is one of the main sources of air pollutants, NO emitted by human activities x Most of it comes from the combustion of fossil fuels, such as those in automobiles, aircraft, internal combustion engines, and industrial furnaces. NO x It can cause a series of pollution such as the destruction of the ozone layer, photochemical smog, acid rain and the formation of haze particles, which seriously endanger human health. In order to control air pollution, for NO x The emission requirements are becoming more and more stringent. For example, "Emission Standard of Air Pollutants for Cement Industry" (GB 4915-2013) stipulates th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J23/34B01J35/04B01D53/86B01D53/56
Inventor 邓育新陈鑫王重庆邵荣侯贵华王路明许伟奚新国
Owner YANCHENG INST OF TECH