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Wear-resistant enhancement solution with cooperative mercury removal function and application of enhancement solution

A kind of enhanced liquid and anti-wear technology, which is applied in the direction of catalyst protection, dispersed particle separation, physical/chemical process catalyst, etc., can solve the problems of expensive ruthenium and short service life, so as to improve the service life and strength, and enhance the anti-wear performance Effect

Active Publication Date: 2015-08-05
JIANGSU LONGYUAN CATALYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing catalyst needs to add a higher concentration of HCl or use ruthenium which is relatively expensive and has a shorter service life when demercurizing coal-fired flue gas, and provides a catalyst that can enhance the catalyst's resistance. Wear strength, increase the service life of the catalyst, and do not need to add HCl in the flue gas with synergistic mercury removal and anti-wear enhancement liquid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Accurately weigh 1g of silicon tetrachloride, 2g of vanadium trichloride, 1g of cuprous chloride, 2g of ferrous chloride, and 1g of stannous chloride, then add 93g of deionized water and mix under stirring to form a uniform enhancement solution.

[0016] Take two honeycomb SCR denitration catalyst monomers of the same batch, and mark them as the first catalyst monomer and the second catalyst monomer respectively. The first catalyst monomer is not treated, and the second catalyst monomer is used at a distance of 15cm from the end. The reinforcing liquid was impregnated for 2 minutes, then cured at room temperature for 3 hours, and the second catalyst monomer was dried in a drying oven at 80°C for 3 hours, so that the reinforcing liquid and the catalyst were combined to form a mercury-removing and reinforcing component.

[0017] Then cut the first catalyst monomer and the second catalyst monomer into 100mm×60mm×60mm to test the wear strength; take 0.8g of the first catalys...

Embodiment 2

[0022] Accurately weigh 5g of silicon tetrachloride, 0.1g of vanadium trichloride, 0.1g of cuprous chloride, 0.1g of ferrous chloride, 0.1g of tin protochloride, add 94.6g of deionized water and mix under stirring to form a uniform reinforcement liquid.

[0023] Take two honeycomb SCR denitration catalyst monomers of the same batch, and mark them as the first catalyst monomer and the second catalyst monomer respectively. The first catalyst monomer is not treated, and the second catalyst monomer is 20cm away from the end. The reinforcing liquid was used for impregnation for 5 minutes, cured at room temperature for 6 hours, and then the second catalyst monomer was dried in a drying oven at 100° C. for 1 hour, so that the reinforcing liquid and the catalyst were combined to form a mercury-removing and reinforcing component.

[0024] Then the first catalyst monomer and the second catalyst monomer were cut into 100mm × 60mm × 60mm to test the wear strength; respectively take the fi...

Embodiment 3

[0029] Accurately weigh 4g of silicon tetrachloride, 2g of vanadium trichloride, 1g of cuprous chloride, 2g of ferrous chloride, and 1g of stannous chloride; add 90g of water and mix under stirring to form a uniform enhancement solution.

[0030] Take two honeycomb SCR denitration catalyst monomers of the same batch, and mark them as the first catalyst monomer and the second catalyst monomer respectively. The first catalyst monomer is not treated, and the second catalyst monomer is used at a distance of 15cm from the end. The reinforcing solution was impregnated for 4 minutes, then cured at room temperature for 5 hours, and the second catalyst monomer was dried in a drying oven at 100°C for 2 hours, so that the reinforcing solution and the catalyst were combined to form a mercury-removing and reinforcing component.

[0031] Then the first catalyst monomer and the second catalyst monomer were cut into 100mm × 60mm × 60mm to test the wear strength; respectively take the first cat...

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PUM

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Abstract

The invention relates to a wear-resistant enhancement solution with a cooperative mercury removal function and an application of the enhancement solution. The enhancement solution comprises, in weight percent, 3-5% of silicon tetrachloride or silica sol, 0.1-2% of vanadium trichloride, 0.1-1% of cuprous chloride, 0.1-2% of ferrous chloride, 0.1-1% of stannous chloride and 90-94.6% of deionized water. One end of a prepared honeycomb SCR (selective catalytic reduction) denitration catalyst is immersed in the enhancement solution for 2-5min, cured at room temperature and then dried in a drying box for 1-3h. The wear resistance of the end of the catalyst in a denitration reactor can be enhanced by the prepared enhancement solution, so that the service life of the catalyst can be prolonged, the strength of the catalyst can be improved, the mercury oxidation efficiency of the catalyst is improved by 10-25% under the same condition, and wear weight loss rate can be reduced by 10-20%.

Description

technical field [0001] The invention relates to a synergistic mercury removal and anti-wear enhancing liquid and application thereof, belonging to the technical field of catalyst preparation. Background technique [0002] Coal combustion is the main source of atmospheric mercury pollution, and power plants are the largest source of mercury pollution. The mercury content in raw coal in China ranges from 0.1 to 5.5 mg / kg, with an average of 0.22 mg / kg, which is about 0.09 mg / kg higher than the world average. During the combustion of coal, Hg is converted into particulate mercury, gaseous divalent mercury (Hg 2+ ) and elemental mercury (Hg 0 ) into the atmosphere, and can stay in the atmosphere for a long time, causing mercury pollution. In particular, elemental mercury is one of the environmental protection problems that need to be solved urgently. The Twelfth Five-Year Plan for Comprehensive Prevention and Control of Heavy Metal Pollution issued in February 2011 required ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J33/00B01J27/135B01D53/90B01D53/56B01D53/86B01D53/64
Inventor 张涛肖雨亭白伟陆金丰贾曼徐莉
Owner JIANGSU LONGYUAN CATALYST CO LTD