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Low-temperature SCR denitration catalyst with high catalytic efficiency

A technology of denitrification catalyst and catalytic efficiency, which is applied in the field of low-temperature SCR denitrification catalyst, can solve the problems of poor reaction effect, achieve the effect of improving the qualified rate, improving the qualified rate of products, and improving the utilization rate of catalyst raw materials

Pending Publication Date: 2020-03-20
山东凯米科化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a low-temperature SCR denitrification catalyst with high catalytic efficiency, which solves the problem that the traditional nitrogen oxides often catalyze the higher temperature nitrogen oxides after combustion. However, the catalytic reaction effect is poor at lower temperatures

Method used

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  • Low-temperature SCR denitration catalyst with high catalytic efficiency
  • Low-temperature SCR denitration catalyst with high catalytic efficiency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Firstly mix 8 parts of manganese composite oxide, 10 parts of chromium composite oxide, 10 parts of tungsten composite oxide, 90 parts of copper composite oxide, 100 parts of tin composite oxide and 20 parts of iron composite oxide in the main agent. Take out an appropriate amount, put it into the working tower, and remove the water on its surface through the water removal equipment;

[0033] Step 2: Then put the metal composite oxide in step 1 of removing moisture into the acid mist adsorption tower, and perform the adsorption operation on the acid mist adsorption tower through the anticorrosive fan;

[0034] Step 3: After the main agent absorbed by the acid mist is fully stirred, gradually add 100 parts of ammonia water, 2 parts of absolute ethanol and 1 part of glacial acetic acid and other mixed liquids;

[0035] Step 4: After adding the liquid, you can gradually add 15 parts of ceria, 1 part of vanadium pentoxide, 10 parts of titanium dioxide, 5 parts of cerium va...

Embodiment 2

[0038] Step 1: First take out 18 parts of manganese composite oxide, 20 parts of chromium composite oxide, 20 parts of tungsten composite oxide, 100 parts of copper composite oxide, 120 parts of tin composite oxide and iron composite oxide in the main agent. , Put it into the working tower, and remove the moisture on the surface through the water removal equipment;

[0039] Step 2: Then put the metal composite oxide in step 1 of removing moisture into the acid mist adsorption tower, and perform the adsorption operation on the acid mist adsorption tower through the anticorrosive fan;

[0040] Step 3: The main agent after the acid mist adsorption is fully stirred, and a mixed liquid such as 180 parts of ammonia, 4 parts of absolute ethanol and 2 parts of glacial acetic acid are gradually added;

[0041] Step 4: After adding the liquid, you can gradually add 35 parts of cerium oxide, 2 parts of vanadium pentoxide, 100 parts of titanium dioxide, 6 parts of cerium vanadium tetraoxide, 5 p...

Embodiment 3

[0044] Step 1: Firstly mix 38 parts of manganese composite oxide, 30 parts of chromium composite oxide, 30 parts of tungsten composite oxide, 110 parts of copper composite oxide, 180 parts of tin composite oxide and 30 parts of iron composite oxide in the main agent. Take out an appropriate amount, put it into the working tower, and remove the water on its surface through the water removal equipment;

[0045] Step 2: Then put the metal composite oxide in step 1 of removing moisture into the acid mist adsorption tower, and perform the adsorption operation on the acid mist adsorption tower through the anticorrosive fan;

[0046] Step 3: The main agent after acid mist adsorption is fully stirred, and 280 parts of ammonia water, 5 parts of absolute ethanol and 3 parts of glacial acetic acid are gradually added to the mixed liquid;

[0047] Step 4: After adding the liquid, you can gradually add 55 parts of ceria, 3 parts of vanadium pentoxide, 40 parts of titanium dioxide, 7 parts of ceri...

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Abstract

The invention discloses a low-temperature SCR denitration catalyst with high catalytic efficiency, wherein the low-temperature SCR denitration catalyst comprises the following raw material componentsby weight: main agents and auxiliary agents, wherein the main agent comprise: 5-60 parts of a manganese composite oxide, 10-50 parts of a chromium composite oxide, 15-85 parts of cerium dioxide, 1-8 parts of vanadium pentoxide, 10-100 parts of titanium dioxide, 10-60 parts of a tungsten composite oxide, 90-150 parts of a copper composite oxide, 100-250 parts of a tin composite oxide, 20-40 parts of an iron composite oxide and 100-500 parts of ammonia water, and the auxiliary agents comprise: 3-15 parts of molybdenum oxide, 15-30 parts of sodium oxide, 40-80 parts of potassium oxide, 8-14 partsof elemental sulfur crystal powder, 1-6 parts of glacial acetic acid, 2-9 parts of absolute ethyl alcohol and 1-6 parts of magnesium oxide. The invention relates to the technical field of denitrationcatalysts. The invention discloses a low-temperature SCR denitration catalyst with high catalytic efficiency. In the using process, the optimal reaction temperature of the catalytic reaction can be effectively reduced, the utilization rate of the catalyst raw materials can be greatly increased after treatment, the qualification rate of the SCR denitration catalyst is greatly increased through themethod, and the product qualification rate of the catalytic reaction is effectively increased.

Description

Technical field [0001] The invention relates to the technical field of denitration catalysts, in particular to a low-temperature SCR denitration catalyst with high catalytic efficiency. Background technique [0002] Catalysis is a reaction in which the free energy of activation required for the reaction is changed by the catalyst, the chemical reaction rate of the reactant is changed, and the quantity and quality of the catalyst before and after the reaction are not changed. For a chemical reactant to undergo a chemical reaction, its chemical bond must be changed. Changing or breaking a chemical bond requires a certain amount of energy support. The lowest energy threshold required to change the chemical bond is called activation free energy, and the catalyst changes the chemical reaction. The free energy of activation in turn affects the reaction rate. Positive catalysts can accelerate the reaction; negative catalysts or inhibitors will react with the reactants to reduce the che...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J27/051B01D53/86B01D53/56
CPCB01D53/8628B01J23/002B01J23/8898B01J27/0515B01J2523/00B01J2523/12B01J2523/13B01J2523/17B01J2523/22B01J2523/3712B01J2523/43B01J2523/47B01J2523/55B01J2523/67B01J2523/68B01J2523/69B01J2523/72B01J2523/842
Inventor 慈敦锋
Owner 山东凯米科化工股份有限公司