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Novel composite efficient VOCs comprehensive waste gas treatment catalyst and preparation method thereof

A waste gas treatment and composite technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low conversion rate of VOCs, easy poisoning of catalysts, single catalytic activity, etc., and achieve recyclability Strong resistance, no secondary pollution, low conversion temperature

Inactive Publication Date: 2021-08-03
四川宝英胜达环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing catalyst has low catalytic activity, and the catalytic activity is single, and when the current catalyst is catalytically burning VOCs, the catalyst is easily poisoned, the conversion rate of VOCs is low, the cost is high, and the stability is poor

Method used

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  • Novel composite efficient VOCs comprehensive waste gas treatment catalyst and preparation method thereof
  • Novel composite efficient VOCs comprehensive waste gas treatment catalyst and preparation method thereof
  • Novel composite efficient VOCs comprehensive waste gas treatment catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Preparation Example novel compound of formula VOCs efficiently integrated exhaust gas treating catalyst according to the present embodiment, comprising the steps of:

[0041]1) High-negative carrier system: The carrier is 30%, 40% silica, 13% magnesium oxide, 3% oxide, and calcium oxide, and 3% oxide. Diliborn nitric acid is added to the stirring tank, the mass of dilute nitric acid is controlled by 15% of the overall solid mass, and the dilute nitric acid pH is controlled at 4-6, and the stirring frequency of the stirring can is controlled at 30-60 rpm, and the stirring time is controlled From 1-2h, a uniform carrier feedstock is obtained, and the carrier feedstock is placed in a honeycomb mold forming apparatus for extrusion molding (100 * 100 * 50, unit mm) 200 mesh, and put the molded carrier into the drying oven for drying The drying temperature is controlled at 80 ° C to 130 ° C, and the drying time is controlled at 8-16 h. After drying, the dried carrier is placed in...

Embodiment 2

[0046] Example 2 1) High negative load bearer is made as in Example 1, and in different, the carrier is 50%, 20%, magnesium oxide, 3% oxide, 3% oxide, and calcium oxide, and calcium oxide, and calcium oxide by 3% oxide. The hydrocarbonite 8% is mixed, and the carrier feedstock is placed in a honeycomb mold forming apparatus for extrusion molding (100 * 100 * 100, unit mm) 400 mesh;

[0047] 2) The underlying anti-high temperature modification step is the same as in Example 1, and the total concentration of the metal ion concentration of the mixed solution is controlled at 5 mol / L, the coating amount is controlled at 8% of the weight of the carrier;

[0048] 3) The medium-level high dispersion modification step is the same as in Example 1, and the metal ion concentration of the mixed solution is controlled at 3 mol / L;

[0049] 4) Highly active substance mushroom steps as in Example 1, different, the metal ion concentration of the mixed solution is controlled at 7 mol / L;

[00...

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Abstract

The invention discloses a novel composite efficient VOCs comprehensive waste gas treatment catalyst and a preparation method thereof, which belong to the technical field of catalysts. The technical problems that an existing catalyst is low in catalytic activity and single in catalytic activity, and when the existing catalyst is used for catalytic combustion of VOCs, the catalyst is prone to poisoning, low in VOCs conversion rate, high in cost and poor in stability are solved. According to the catalyst, a precious metal and non-precious metal combined mode is adopted, and the preparation technology adopts the technologies of self-preparation of a high-load carrier, bottom layer high-temperature-resistant modification, middle layer high-dispersion modification, high-activity substance coating and dipping and high-temperature and high-pressure organic matter or hydrogen reduction calcination. The preparation method is simple, and the prepared catalyst is high in activity, high in efficiency of catalytic combustion of volatile organic compounds, lower in conversion temperature, good in stability, good in toxicity resistance, long in service life, low in cost, wide in application range, free of secondary pollution and high in recoverability.

Description

Technical field [0001] The present invention belongs to the technical field of catalyst, particularly relates to a novel compound of formula VOCs efficiently integrated method for treating an exhaust gas catalyst and its preparation. Background technique [0002] VOCs (volatile organic compounds) of volatile organic compounds, refers to the saturated vapor pressure greater than 133.32 Pa at room temperature, an organic compound having a boiling point below 50-260 deg.] C under normal pressure, or at normal temperature and pressure can be any organic volatile solid or liquid, It has identified 300 kinds. The most common are benzene, toluene, xylene, ethyl acetate, acetone, styrene, formaldehyde, ethylene glycol ethyl ether, methylene chloride and the like, which is mainly produced in the petrochemical, chemical, printing, paint production, rubber production, pharmaceutical, textile printing and dyeing. These volatile organic waste gas can cause headaches, nausea, vomiting, fatigue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J37/02B01J37/08F23G7/07
CPCB01J23/10B01J37/0201B01J37/08F23G7/07F23G2209/14B01J35/394
Inventor 周鹏晏坤
Owner 四川宝英胜达环保材料有限公司
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