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A kind of denitrification catalyst end hardening solution and its preparation method and application

A denitration catalyst and hardening liquid technology, which is applied in catalyst protection, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem that ammonium metavanadate is expensive, aluminum sulfate is not resistant to high temperature, and adverse effects on the environment and human health. and other problems, to achieve the effect of high bond strength, increased strength and low price

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can improve the overall service life and strength of the module at the same time, but aluminum sulfate is not resistant to high temperature and will decompose to produce sulfur dioxide and other sulfides, and ammonium metavanadate is expensive, which has adverse effects on the environment and human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First take 34g of sodium silicate and add it to 53g of water. After the sodium silicate is dissolved, add 8g of zinc oxide to it, stir for 0.5 hours, then add 5g of copper nitrate and stir for 1 hour to form a hardening solution.

[0022] After soaking the end of the honeycomb denitration catalyst in the hardening solution for 3 minutes, blow off the excess hardening solution at the end of the catalyst with compressed air; put the catalyst soaked in the hardening solution at room temperature to naturally solidify, and then program the temperature to 550 After 4 hours of calcination at °C, hardening is complete.

Embodiment 2

[0024] First take 30g of sodium silicate and add it to 58g of water. After the sodium silicate is dissolved, add 7g of zinc oxide to it, stir for 0.5 hours, then add 5g of ferrous nitrate and stir for 1 hour to form a hardening solution.

[0025] After soaking the end of the honeycomb denitration catalyst in the hardening solution for 3 minutes, blow off the excess hardening solution at the end of the catalyst with compressed air; put the catalyst soaked in the hardening solution at room temperature to naturally solidify, and then heat it up to 500 After 6 hours of calcination at ℃, hardening is complete.

Embodiment 3

[0027] First, take 26g of sodium silicate and add it to 63g of water. After the sodium silicate is dissolved, add 4g of zinc oxide to it, stir for 0.5 hours, then add 3g of copper nitrate and 4g of ferrous nitrate and stir for 2 hours to form a hardening solution. .

[0028] After soaking the end of the honeycomb denitration catalyst in the hardening solution for 5 minutes, blow off the excess hardening solution at the end of the catalyst with compressed air; put the catalyst soaked in the hardening solution at room temperature to naturally solidify, and then program the temperature to 550 After 4 hours of calcination at °C, hardening is complete.

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Abstract

The invention discloses a denitration catalyst end part hardening liquid and a preparation method thereof. The end part hardening liquid comprises the following components by weight percent: 20-55% of sodium silicate, 3-10% of zinc oxide and 35-70% of water. The preparation method comprises the following steps: dissolving sodium silicate in the water to form a sodium silicate solution; adding zinc oxide into the sodium silicate solution; uniformly mixing. The end part hardening liquid can be suitable for high-temperature conditions, can remarkably improve the end part strength of a catalyst, and is low in price, environment-friendly and suitable for industrialized application.

Description

technical field [0001] The invention discloses a denitrification catalyst end hardening liquid, a preparation method and application thereof. Background technique [0002] NO x Nitric acid and nitrate fine particles can form in the atmosphere, together with sulfuric acid and sulfate fine particles, aggravating the deterioration of regional acid rain. Atmospheric NO x After reaching a certain concentration with volatile organic compounds, photochemical smog will be produced through a series of complex photochemical reactions under sunlight, causing regional oxidant pollution and fine particle pollution, degrading regional air quality, reducing solar radiation, and causing climate change , causing damage to the ecosystem. Currently NO x Pollution has become a global environmental problem. How to effectively control NO x Emissions have become an important topic of concern in current environmental protection, and the country has included the control of nitrogen oxides in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J33/00B01J23/06B01J23/80
Inventor 杨爱霞刘淑鹤王学海陈玉香
Owner CHINA PETROLEUM & CHEM CORP
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