Preparation method of binary denitration sulfur-resistant catalyst composite filtering material

A composite filter material and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., to achieve the effects of simple use, fast response and stable load

Active Publication Date: 2017-05-31
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Support-free Mn-MoO x The catalyst has been recorded in many literatures for its high denitrification efficiency at low temperatures, and its denitrification ability can almost completely convert NOx into N at 120 °C 2 It is the first choice for denitrification treatment, but there is no suitable technology to successfully apply it to filter media

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  • Preparation method of binary denitration sulfur-resistant catalyst composite filtering material
  • Preparation method of binary denitration sulfur-resistant catalyst composite filtering material
  • Preparation method of binary denitration sulfur-resistant catalyst composite filtering material

Examples

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Effect test

Embodiment 1

[0028] First weigh 0.0273g of sodium lauryl sulfate and add it to 50ml of deionized water, then put it into a PPS filter disc with a cut mass of 0:4213g, ultrasonically treat it for 1 hour, take it out and dry it for later use. Then weigh 20ml of deionized water and add it to a 250ml beaker. Then accurately weigh ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) 1.7651g, add a magnet and stir for 5min until the solution is evenly mixed. Prepare 20ml of potassium permanganate solution with a concentration of 0.2M, sonicate or shake the prepared solution until the solute is completely dissolved, add it to the previous beaker, and mix and stir for 4 minutes. Then configure 30ml of 0.006mol manganese sulfate monohydrate and add it to the solution that was mixed uniformly before. At this time, the ratio of Mn:Mo in the solution is 1:1. Add the previously dried PPS filter disc into it and place it at room temperature Stir for 15 minutes, and the solution is brown af...

Embodiment 2

[0032] First weigh 0.0273g of sodium lauryl sulfate and add it to 50ml of deionized water, then put it into a PPS filter disc with a cut mass of 0.6320g, ultrasonically treat it for 1 hour, take it out and dry it for later use. Then weigh 20ml of deionized water and add it to a 250ml beaker. Then accurately weigh ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) 1.7651g, add a magnet and stir for 5min until the solution is evenly mixed. Prepare 40ml of potassium permanganate solution with a concentration of 0.2M, sonicate or shake the prepared solution until the solute is completely dissolved, add it to the previous beaker, and mix and stir for 4 minutes. Then configure 30ml of 0.012mol manganese sulfate monohydrate, and add it to the solution that was mixed uniformly before. At this time, the ratio of Mn:Mo in the solution is 2:1. Add the previously dried PPS filter disc into it, and place it at room temperature Stir for 15 minutes, and the solution is brown ...

Embodiment 3

[0036] First weigh 0.0273g of sodium lauryl sulfate and add it to 50ml of deionized water, then put it into a PPS filter disc with a mass of 1.011g, ultrasonicate for 1 hour, take it out and dry it for later use. Then weigh 20ml of deionized water and add it to a 250ml beaker. Then accurately weigh ammonium molybdate tetrahydrate ((NH 4 ) 6 Mo 7 o 24 4H 2 O) 1.7651g, add a magnet and stir for 5min until the solution is evenly mixed. Prepare 80ml of potassium permanganate solution with a concentration of 0.2M, sonicate or shake the prepared solution until the solute is completely dissolved, add it to the previous beaker, and mix and stir for 4 minutes. Then configure 30ml of 0.009mol manganese sulfate monohydrate, and add it to the solution that was mixed uniformly before. At this time, the ratio of Mn:Mo in the solution is 2.5:1. Add the previously dried PPS filter disc into it, and place it at room temperature Stir for 15 minutes, and the solution is brown after mixing ...

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Abstract

The invention provides a preparation method of a binary denitration sulfur-resistant catalyst composite filtering material. The preparation method comprises the following steps of using a polyphenylene sulfide filtering material treated by a surface active agent as a carrier, using KMnO4 (potassium permanganate), MnSO4.H2O (manganese sulfate monohydrate) and (NH4)6Mo7O24.4H2O (ammonium molybdate) as catalyst precursors, using deionized water as solvent, and adopting a high-temperature and high-pressure hydrothermal method, so as to obtain the composite filter material. The preparation method has the advantages that because the binary denitration sulfur-resistant catalyst is adopted, compared with single-component catalysts, the denitration sulfur-resistant property is better; because the high-temperature and high-pressure hydrothermal method is adopted, the catalyst can be generated and loaded at the surface of the polyphenylene sulfide filtering material; when the loading amount of the catalyst is greater than 5mg / cm<2>, the better denitration property can be obtained; the reaction synthesis method is quick, the operation is simple, and the prepared composite filtering material is suitable for using as dedusting agents and denitration agents.

Description

technical field [0001] The invention belongs to the technical field of functional composite filter materials, and in particular relates to a method for preparing a composite filter material for binary denitrification and anti-sulfur catalysts. Background technique [0002] my country is a country short of oil, little gas, and rich in coal. Coal is the main energy source in our country. The combustion of coal raw materials will produce a large number of pollutants. 87% of air pollutants are sulfur dioxide (SO 2 ), 71% of carbon monoxide (CO), 67% of nitrogen oxides (NO x ) and 60% of the soot are from the combustion of coal raw materials. A large proportion of pollutants are nitrogen oxides, NO x Already with SO 2 , CO, and become one of the main sources of air pollution, mainly including nitric oxide (NO), nitrogen dioxide (NO 2 ) and nitrous oxide (N 2 O), of which NO accounts for 90-95%, NO 2 5-10%, while N 2 O is only about 1%. NO in the air x It has serious harm...

Claims

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Application Information

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IPC IPC(8): B01D39/16B01D53/86B01D53/56B01J23/889
CPCB01D39/16B01D53/8628B01D2239/10B01J23/8892
Inventor 郑玉婴郑伟杰
Owner FUZHOU UNIVERSITY
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