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A kind of hardening solution for the end of honeycomb denitration catalyst unit and its application method

A technology of denitrification catalyst and hardening solution, applied in the field of denitrification catalyst, can solve the problems of sintering deactivation of denitrification catalyst, achieve the effect of ensuring the hardening effect and improving the anti-wear strength

Inactive Publication Date: 2021-07-23
无锡华光新动力环保科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that the denitrification catalyst uses the existing hardening solution and needs to be calcined at a high temperature of about 770°C, resulting in partial sintering deactivation of the denitrification catalyst, the present invention provides a hardening solution for the end of the honeycomb denitrification catalyst unit and its use method. It can not only ensure the end hardening effect of the denitration catalyst, but also avoid the partial sintering deactivation of the denitration catalyst caused by high temperature calcination

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A honeycomb denitration catalyst unit end hardening solution, which includes a mixed solution of component A and a mixed solution of component B, the mixed solution of component A includes 100 parts by weight of water, 15 parts of sodium hydroxide, and the mixed solution of component B The solution includes 100 parts by weight of water and 40 parts of aluminum sulfate.

[0013] Wherein, sodium hydroxide can be replaced by potassium hydroxide; aluminum sulfate can be replaced by any one of aluminum chloride, aluminum nitrate, and aluminum dihydrogen phosphate.

[0014] A method for using the hardening solution for the end of the honeycomb denitration catalyst unit. Firstly, the end of the denitration catalyst unit is soaked in the mixed solution of component A of the hardening solution, taken out after 10s and dried; then soaked in the B component of the hardening solution. Component mixed solution, and maintain the temperature of component B mixed solution at 30°C, take...

Embodiment 2

[0016] A honeycomb denitration catalyst unit end hardening solution, which includes a mixed solution of component A and a mixed solution of component B, the mixed solution of component A includes 100 parts by weight of water, 100 parts of sodium hydroxide, and the mixed solution of component B The solution includes 100 parts by weight of water and 65 parts of aluminum sulfate.

[0017] Wherein, sodium hydroxide can be replaced by potassium hydroxide; aluminum sulfate can be replaced by any one of aluminum chloride, aluminum nitrate, and aluminum dihydrogen phosphate.

[0018] A method of using the hardening solution for the end of the honeycomb denitration catalyst unit. Firstly, the end of the denitration catalyst unit is soaked in the mixed solution of component A of the hardening solution, taken out after 20 seconds and dried; then soaked in the B component of the hardening solution. In the component mixed solution, and maintain the temperature of the component B mixed solu...

Embodiment 3

[0020] A honeycomb denitration catalyst unit terminal hardening solution, which includes a mixed solution of component A and a mixed solution of component B, the mixed solution of component A includes 100 parts by weight of water, 200 parts of sodium hydroxide, and the mixed solution of component B The solution includes 100 parts by weight of water and 89 parts of aluminum sulfate.

[0021] Wherein, sodium hydroxide can be replaced by potassium hydroxide; aluminum sulfate can be replaced by any one of aluminum chloride, aluminum nitrate, and aluminum dihydrogen phosphate.

[0022] A method for using the hardening solution for the end of the honeycomb denitration catalyst unit. First, soak the end of the denitration catalyst unit in the mixed solution of component A of the hardening solution, take it out after 30s and dry it; then soak it in the B component of the hardening solution. In the component mixed solution, and maintain the temperature of the component B mixed solution...

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Abstract

The invention provides a hardening solution for the end of a honeycomb denitration catalyst unit and a method for using the same, which can not only ensure the hardening effect of the end of the denitration catalyst, but also avoid the partial sintering deactivation of the denitration catalyst caused by high-temperature calcination; Including component A mixed solution and component B mixed solution, the mixed solution of component A includes 100 parts by weight of water, 15 parts to 200 parts of sodium hydroxide, and the mixed solution of component B includes 100 parts of water and 40 to 89 parts of aluminum sulfate.

Description

technical field [0001] The invention relates to the technical field of denitration catalysts, in particular to a hardening solution for the end of a honeycomb denitration catalyst unit and a method for using the same. Background technique [0002] With the promulgation of "Emission Standards of Air Pollutants for Thermal Power Plants" (GB13223-2011), denitrification catalysts are widely used in denitrification renovation projects of coal-fired power plants in China; according to the performance characteristics of denitrification catalysts, denitrification devices are generally arranged Before the device, the dust content of flue gas in coal-fired power plants generally reaches 30-60g / Nm3, so the denitrification catalyst needs to be hardened at the end to slow down the wear of the catalyst caused by the fly ash particles in the flue gas hitting the end of the catalyst. The existing The end hardening treatment method is to soak one end of the denitrification catalyst in a spec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J33/00B01J37/02B01J37/08B01D53/86B01D53/56
CPCB01D53/8625B01J33/00B01J37/0201B01J37/088
Inventor 赵建新钱军陈玲孟德海马俊白丽高宽峰孙志翱
Owner 无锡华光新动力环保科技股份有限公司
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