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A regeneration solution and regeneration method for corrugated catalyst

A catalyst, corrugated technology, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc. High activity recovery rate and good supplementation effect

Active Publication Date: 2016-08-24
TIANHE BAODING ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the corrugated catalyst occupies only 5% of the world catalyst market, there is no regeneration solution and regeneration method specially used for the corrugated catalyst, and the regeneration solution used for its regeneration is generally selected from honeycomb catalyst or flat catalyst. Regeneration liquid, the regeneration effect is not ideal

Method used

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preparation example Construction

[0053] In the present invention, the preparation method of the regenerated liquid preferably includes the following steps:

[0054] a) Mix penetration enhancer, emulsifier, surfactant and deionized water to obtain solution A;

[0055] b) Mixing ammonium metavanadate, ammonium paratungstate, ammonium heptamolybdate, and co-solvent with the solution A to obtain solution B; the co-solvent is acetamide;

[0056] c) Mixing the solution B with acid and aging to obtain a regenerated liquid.

[0057] The present invention mixes penetration enhancer, emulsifier, surfactant and deionized water to obtain solution A. In the present invention, the penetration enhancer preferably includes one or more of JFC type fatty alcohol polyoxyethylene ether, JFC-1 type fatty alcohol polyoxyethylene ether and JFC-2 type fatty alcohol polyoxyethylene ether, It is more preferably a JFC-1 fatty alcohol polyoxyethylene ether. The present invention has no special restrictions on the source of the penetration enh...

Embodiment 1

[0091] Add 1wt‰ of JFC-1 fatty alcohol polyoxyethylene ether, 1wt‰ of TX-10 type alkylphenol polyoxyethylene ether and 0.2wt% of AEO fatty alcohol polyoxyethylene ether into deionized water, and stir for 5 minutes To be uniform, solution A is obtained; 1wt% of ammonium metavanadate, 2wt% of ammonium paratungstate, 1.5wt% of ammonium heptamolybdate, and 1wt% of acetamide are added to solution A, and stirred for 35min until uniform, to obtain solution B; Add nitric acid to solution B, adjust the pH to 5, continue to stir for 5 minutes until uniform, and age for 2 hours to obtain a regenerated solution.

Embodiment 2

[0093] Add 2wt‰ of JFC-1 fatty alcohol polyoxyethylene ether, 2wt‰ of TX-10 type alkylphenol polyoxyethylene ether and 0.4wt% AEO fatty alcohol polyoxyethylene ether to deionized water, and stir for 5 minutes To be uniform, solution A is obtained; 2wt% of ammonium metavanadate, 4wt% of ammonium paratungstate, 3wt% of ammonium heptamolybdate, and 2wt% of acetamide are added to solution A, and stirred for 35 minutes to be uniform to obtain solution B; Add nitric acid to solution B, adjust the pH to 5.5, continue to stir for 8 minutes until uniform, and aging for 2 hours to obtain a regenerated solution.

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Abstract

The invention provides a regeneration solution and a regeneration method for corrugated catalysts. The regeneration solution comprises the following components: penetration enhancer 1wt‰~5wt‰; emulsifier 1wt‰~5wt‰; surfactant 0.2wt‰ ~1wt‰; cosolvent 1wt%~5wt%; ammonium metavanadate 1wt%~5wt%; ammonium paratungstate 2wt%~10wt%; ammonium heptamolybdate 1.5wt%~7.5wt%; the balance is deionized water and acid; The cosolvent is acetamide. Compared with the prior art, the regenerated liquid provided by the invention has a good supplement effect on the active components of the corrugated catalyst, and the regenerated corrugated catalyst has a high denitrification activity recovery rate. Experimental results show that the denitrification efficiency of the regenerated corrugated catalyst is above 84%, and the activity recovery rate reaches 99%-101%.

Description

Technical field [0001] The present invention relates to the technical field of catalyst regeneration, and more specifically, to a regeneration liquid for corrugated catalysts and a regeneration method. Background technique [0002] Nitrogen oxide is one of the main harmful substances that pollute the atmosphere. Its main source is the combustion of coal. my country is a country with coal as the main energy source. With the increasingly serious pollution of nitrogen oxide emissions, how to deal with nitrogen oxides economically and effectively The denitration treatment has important practical significance. [0003] At present, the selective catalytic reduction (Selective Catalytic Reduction, hereinafter referred to as SCR) denitration technology is widely used in the denitrification system of coal-fired power plants because of its efficient and reliable denitrification performance. Among them, the catalyst is the core of the SCR denitrification technology, and the cost accounts for t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J38/60B01J38/62
Inventor 王丽娜崔飞飞莫士净刘海军闫坤鹏毛昂李毅贾彦奇翟洪乐张毅李庆丰於承志
Owner TIANHE BAODING ENVIRONMENTAL ENG
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