Regenerating liquid for corrugated catalyst and regeneration method

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: 2015-01-07
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 regeneration solution preferably includes the following steps:

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

[0055] b) Ammonium metavanadate, ammonium paratungstate, ammonium heptamolybdate, and a cosolvent are mixed with the solution A to obtain a solution B; the cosolvent is acetamide;

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

[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, More preferred is JFC-1 fatty alcohol polyoxyethylene ether. The present invention has no special limitation on the sou...

Embodiment 1

[0091] Add 1wt‰ JFC-1 type fatty alcohol polyoxyethylene ether, 1wt‰ TX-10 type alkylphenol polyoxyethylene ether and 0.2wt% AEO type fatty alcohol polyoxyethylene ether into deionized water, stir for 5min until uniform to obtain solution A; add 1wt% ammonium metavanadate, 2wt% ammonium paratungstate, 1.5wt% ammonium heptamolybdate and 1wt% acetamide to solution A, stir for 35 minutes until uniform, and obtain solution B; Nitric acid was added to the solution B to adjust the pH value to 5, and the mixture was stirred for 5 minutes until uniform, and aged for 2 hours to obtain a regenerated solution.

Embodiment 2

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

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PUM

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Abstract

The invention provides regenerating liquid for a corrugated catalyst and a regeneration method. The regenerating liquid comprises the following constituents: 0.1-0.5wt% of a penetration accelerant, 0.1-0.5wt% of an emulsifier, 0.02-0.1wt%of a surfactant, 1-5wt% of a cosolvent, 1-5wt% of ammonium metavanadate, 2-10wt% of ammonium paratungstate, 1.5-7.5wt% of ammonium heptamolybdate, and the balance of deionized water and acid, wherein the cosolvent is acetamide. Compared with the prior art, the regenerating liquid provided by the invention is good in supplementing effect on the active constituents of the corrugated catalyst; the regenerated corrugated catalyst is high in denitration activity recovery rate. The experimental results show that the denitration efficiency of the regenerated corrugated catalyst is up to 84% above, and the activity recovery rate is up to 99-101%.

Description

technical field [0001] The invention relates to the technical field of catalyst regeneration, and more specifically relates to a regeneration solution and a regeneration method for corrugated catalysts. Background technique [0002] Nitrogen oxide is one of the main harmful substances that pollute the atmosphere. Its main source is coal combustion. my country is a country where coal is the main energy source. With the increasing pollution of nitrogen oxide emissions, how to economically and effectively treat nitrogen oxides It is of great practical significance to carry out denitrification treatment. [0003] At present, Selective Catalytic Reduction (hereinafter referred to as SCR) denitrification technology is widely used in the denitrification system of coal-fired power plants due to its efficient and reliable denitrification performance. 30% to 50% of the total investment, and its performance directly affects the overall denitrification effect of the SCR denitrification ...

Claims

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Application Information

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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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