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Composition for cleaning liquid, and applications thereof, and failure SCR catalyst activity recovery method

A technology of SCR catalyst and composition, applied in the direction of catalyst regeneration/reactivation, physical/chemical process catalyst, chemical instruments and methods, etc., can solve the problems of secondary pollution of cleaning wastewater, loss of catalyst active components, etc., and achieve less loss , Improve activity recovery ability, reduce the effect of secondary pollution

Active Publication Date: 2016-03-23
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the shortcomings of the prior art regeneration process loss of catalyst active components and secondary pollution of cleaning waste water, and provide a composition for cleaning liquid and its application and an active recovery method for SCR catalysts that have expired

Method used

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  • Composition for cleaning liquid, and applications thereof, and failure SCR catalyst activity recovery method
  • Composition for cleaning liquid, and applications thereof, and failure SCR catalyst activity recovery method
  • Composition for cleaning liquid, and applications thereof, and failure SCR catalyst activity recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This example is used to illustrate the preparation of the cleaning solution and the catalyst activity replenishing solution provided by the present invention, as well as the method for recovering the activity of the spent SCR catalyst.

[0044] (1) cleaning solution. With 0.06g of Pingpingjia (Sinopharm Chemical), 0.18g of dioctyl sulfosuccinate sodium salt (Jiangsu Haian Petrochemical Plant), 0.08g of glycerol (Sinopharm Chemical), 0.03g of PEG-400 (Sinopharm Chemical) and 0.05g of polyacrylic acid-3000 (Sinopharm Chemical), mixed and stirred with 400g of water, dissolved to obtain cleaning solution A1;

[0045] (2) Catalyst activity replenisher. With the ammonium metavanadate (Chinese medicine chemical) of 1.21g, the ammonium metatungstate (Chinese medicine chemical) of 1.28g, the ammonium molybdate (Chinese medicine chemical) of 0.68g, the oxalic acid (Chinese medicine chemical) of 1.58g and the phosphoric acid of 1.53g ( Sinopharm Chemicals), mixed with 500g of wa...

Embodiment 2

[0052] This example is used to illustrate the preparation of the cleaning solution and the catalyst activity replenishing solution provided by the present invention, as well as the method for recovering the activity of the spent SCR catalyst.

[0053] (1) cleaning solution. With 10g of Pingpingjia, 10g of dioctyl sulfosuccinate sodium salt, 12g of glycerol, 4.8g of PEG-6000 (Sinopharm Chemical) and 3.2g of polyacrylic acid 5000 (Sinopharm Chemical), and 400g of water Mix and stir, and dissolve to obtain cleaning solution A2;

[0054] (2) Catalyst activity replenisher. Mix 19.41g of ammonium metavanadate, 20.5g of ammonium metatungstate, 5.4g of ammonium molybdate, 27.2g of oxalic acid and 7.3g of ammonium dihydrogen phosphate (Sinopharm Chemicals) with 500g of water to obtain a replenishment solution combination Thing, then add the polyvinyl alcohol 26-99 (Sinopharm Chemical) of 5.8g, obtain catalyst activity replenishing liquid B2;

[0055] (3) Restore the activity of the ...

Embodiment 3

[0061] This example is used to illustrate the preparation of the cleaning solution and the catalyst activity replenishing solution provided by the present invention, as well as the method for recovering the activity of the spent SCR catalyst.

[0062] (1) cleaning solution. 0.8g of Pingpingjia, 1.08g of dioctyl sulfosuccinate sodium salt, 1.02g of glycerol, 0.5g of PEG-1000 (Sinopharm Chemical) and 0.6g of polyacrylic acid-3000 (Sinopharm Chemical), Mix and stir with 400g of water, dissolve to obtain cleaning solution A3;

[0063] (2) Catalyst activity replenisher. The ammonium metavanadate of 9.7g, the ammonium metatungstate of 10.2g, the ammonium molybdate of 5.4g, the oxalic acid of 17.5g and the ammonium phosphate (Sinopharm Chemical) of 12.7g are mixed with the water of 500g to obtain the replenishing liquid composition, Then add 0.56g of polyvinyl alcohol 24-88 (Sinopharm Chemicals) to obtain catalyst activity replenishing liquid B3;

[0064] (3) Restore the activity ...

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Abstract

The present invention discloses a composition for a cleaning liquid, and applications thereof, and a failure SCR catalyst activity recovery method. The composition comprises, by weight, 10-40% of fatty alcohol polyoxyethylene ether, 10-40% of glycerol, 5-30% of a dispersing agent, and 5-50% of an anionic penetrant. According to the present invention, the composition can effectively clear impurities on the failure catalyst, the active component loss is less, the cleaning waste liquid is easily subjected to the subsequent water treatment, and the secondary pollution of the waste liquid is reduced.

Description

technical field [0001] The invention relates to a composition for cleaning liquid, its application and a method for restoring the activity of the spent SCR catalyst. Background technique [0002] In recent years, regional and large-scale smog weather has frequently appeared in our country, which directly affects people's health and normal travel, and interferes with the lives of ordinary people and social order. The massive emission of nitrogen oxides (NOx) is an important factor leading to a substantial increase in PM2.5 in the air, and it is also one of the main sources of air pollution in my country. In 2011, the State Council issued the "National Environmental Protection "Twelfth Five-Year Plan" clearly requiring that by 2015 my country's total emissions of nitrogen oxides should be reduced by 10% on the basis of 22.736 million tons in 2010. The thermal power industry is a major NOx emitter, and its emissions account for more than half of my country's total industrial N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/52B01J38/64B01J38/68
Inventor 王宝冬孙琦刘斌何发泉程继红刘长坤
Owner CHNA ENERGY INVESTMENT CORP LTD
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