Regeneration liquid of flat-type catalyst and regeneration method thereof

A catalyst, flat-plate technology, applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as unsatisfactory catalyst regeneration effect, and achieve high activity recovery rate and good replenishment effect. Effect

Inactive Publication Date: 2015-02-25
TIANHE BAODING ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this patent, the denitrification efficiency of the catalyst after regeneration is only 63% to 72%, and the regeneration effect of the catalyst is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] In the present invention, the preparation method of the regeneration liquid preferably includes the following steps:

[0051]a) mixing a penetration enhancer, an emulsifier, a surfactant and deionized water to obtain a solution A;

[0052] b) mixing ammonium metavanadate, ammonium heptamolybdate, and a cosolvent with the solution A to obtain a solution B; the cosolvent is acetamide;

[0053] c) Mixing the solution B with an acid and aging to obtain a regenerated solution.

[0054] 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 source of the penetration enhance...

Embodiment 1

[0087] 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, 1.5wt% ammonium heptamolybdate and 1wt% acetamide to solution A, stir for 35min until uniform, obtain solution B; add Nitric acid, adjust the pH value to 5, continue to stir for 5 minutes until uniform, and age for 2 hours to obtain a regeneration solution.

Embodiment 2

[0089] 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, to obtain solution A; add 2wt% ammonium metavanadate, 3wt% ammonium heptamolybdate and 2wt% acetamide to solution A, stir for 35min until uniform, obtain solution B; 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 a regeneration liquid of a flat-type catalyst and a regeneration method thereof. The regeneration liquid comprises 0.1-0.5wt% of a penetration promoter, 0.1-0.5wt% of an emulsifier, 0.02-0.1wt% of a surfactant, 0.1-0.5wt% of a cosolvent, 0.1-0.5wt% of ammonium metavanadate, 0.15-0.75wt% of ammonium heptamolybdate and the balance deionized water and acid. The cosolvent is acetamide. Compared with the existing regeneration liquid, the regeneration liquid has good effects of supplement of flat-type catalyst active ingredients. The regenerated flat-type catalyst has a high denitration activity recovery rate. An experiment result shows that the regenerated flat-type catalyst has denitration efficiency more than 84% and an activity recovery rate of 99-102%.

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 a flat catalyst. Background technique [0002] The flue gas produced by coal combustion contains a large amount of nitrogen oxides, which is extremely harmful and is one of the main pollutants that cause greenhouse effect, acid rain and ozone layer destruction. In my country's energy structure, the proportion of coal is as high as about 70%, and the environmental problems caused by it are becoming more and more serious. Therefore, how to economically and effectively denitrify nitrogen oxides has important practical significance. [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 in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/68
Inventor 於承志
Owner TIANHE BAODING ENVIRONMENTAL ENG
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