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Plate type denitration catalyst and preparation method thereof

A denitrification catalyst and co-catalyst technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of poor anti-poisoning performance, achieve high mechanical strength, excellent anti-sulfur poisoning ability, and excellent anti-sulfur poisoning performance Effect

Inactive Publication Date: 2017-10-03
DATANG NANJING ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of poor anti-poisoning performance in existing rare earth-based denitrification catalysts, the present invention provides a sulfur-poisoning-resistant rare earth substrate-based denitrification catalyst

Method used

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  • Plate type denitration catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] (1) Preparation of cerium-antimony-molybdenum composite oxide precursor

[0037] Weigh 2.52g of cerium nitrate, add 2.27g of deionized water, dissolve and stir evenly at 80°C to obtain solution A;

[0038] Weigh 0.41g antimony nitrate, add 0.82g ethylene glycol solution, dissolve and stir evenly to obtain solution B;

[0039] Weigh 0.61g of ammonium heptamolybdate and 0.61g of citric acid monohydrate, add 3.05g of deionized water, dissolve and stir evenly to obtain solution C;

[0040] Drop solution C into solution A, add solution B dropwise to the mixed solution after mixing uniformly, and stir during the dropping process;

[0041] (2) Co-catalyst precursor ion solution configuration

[0042] Weigh 0.7g of cobalt nitrate and 0.07g of citric acid monohydrate, add 2.8g of deionized water; then stir evenly until the solution is clear to prepare the promoter of the promoter;

[0043] (3) Preparation of carrier

[0044] Weigh 19g of titanium dioxide and 1g of clay powder and mix them ev...

example 2

[0051] (1) Preparation of cerium-antimony-molybdenum composite oxide precursor

[0052] Weigh 3.78g of cerium nitrate, add 3.40g of deionized water, dissolve and stir evenly at 90°C to obtain solution A;

[0053] Weigh 0.82g of antimony nitrate, add 0.82g of ethylene glycol solution, dissolve and stir evenly to obtain solution B;

[0054] Weigh 0.92g of ammonium heptamolybdate and 1.00g of citric acid monohydrate, add 3.00g of deionized water, dissolve and stir evenly to obtain solution C;

[0055] Drop solution C into solution A, add solution B dropwise to the mixed solution after mixing uniformly, and stir during the dropping process;

[0056] (2) Co-catalyst precursor ion solution configuration

[0057] Weigh 0.82g of ammonium metatungstate and 0.82g of citric acid monohydrate, add 2g of deionized water; then stir evenly until the solution is clear, to prepare the promoter precursor;

[0058] (3) Preparation of carrier

[0059] Weigh 15g of titanium dioxide and 5g of clay powder and mix...

example 3

[0066] (1) Preparation of cerium-antimony-molybdenum composite oxide precursor

[0067] Weigh 2.68g of cerium oxalate, add 2.68g of deionized water, and dissolve and stir evenly at 80°C to obtain solution A;

[0068] Weigh 0.41g of antimony nitrate, add 0.45g of ethylene glycol solution, dissolve and stir evenly to obtain solution B;

[0069] Weigh 0.61g of ammonium heptamolybdate and 0.61g of citric acid monohydrate, add 3.01g of deionized water, dissolve and stir evenly to obtain solution C;

[0070] Drop solution C into solution A, add solution B dropwise to the mixed solution after mixing uniformly, and stir during the dropping process;

[0071] (2) Co-catalyst precursor ion solution configuration

[0072] Weigh 1.05g of lanthanum nitrate and 0.11g of citric acid monohydrate, add 2.8g of deionized water; then stir evenly until the solution is clear, to prepare the cocatalyst precursor;

[0073] (3) Preparation of carrier

[0074] Weigh 10g of titanium dioxide and 10g of clay powder and...

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Abstract

The invention relates to a plate type denitration catalyst and a preparation method of the catalyst and belongs to the field of environment-friendly catalysis material and air pollution control. A cerium-antimony-molybdenum composite oxide serves as a catalytic active component; a tungsten, cobalt or lanthanum oxide serves as a promoter; a titanium dioxide and argil mixing component serves as a major carrier; mass percentages of the cerium-antimony-molybdenum composite oxide and the promoter oxide are 8-20% and 1-3% respectively by taking the mass of the titanium dioxide and argil mixing component carrier as a reference. The denitration activity of the catalyst reaches 98.5% or above, and the catalyst has excellent sulfur poisoning resistance.

Description

Technical field [0001] The invention relates to a plate-type denitration catalyst and a preparation method thereof, belonging to the field of environmental protection catalytic materials and air pollution control. Background technique [0002] In recent years, the state has strengthened supervision of denitrification catalysts (vanadium-titanium series), encouraged the promotion of rare-earth-based denitrification catalysts, provided space for new catalysts, and encouraged enterprises to use rare-earth-based denitrification catalysts to replace vanadium-titanium denitrification catalysts, while reducing waste smoke from the source The production of gas denitrification catalysts (vanadium-titanium series) strives to reduce the amount of hazardous waste produced nationwide and promote the use of light rare earths. [0003] At present, based on the total installed capacity of thermal power industry of 880 million kilowatts, 600 float glass furnaces, and more than 6000 ceramics industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J23/887B01J23/30B01J23/28B01D53/90B01D53/86B01D53/56
CPCB01J23/8876B01D53/8628B01D53/90B01D2255/2063B01D2255/2065B01D2255/20707B01D2255/20746B01D2255/20769B01D2255/20776B01D2255/2098B01D2258/0283B01J23/28B01J23/30B01J23/888
Inventor 严巍王虎李倩黄力纵宇浩
Owner DATANG NANJING ENVIRONMENTAL PROTECTION TECH
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