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In-situ supported denitration sulfur-resistant catalyst compound filter material and preparation method thereof

A composite filter material and catalyst technology, applied in chemical instruments and methods, heterogeneous catalyst chemical elements, physical/chemical process catalysts, etc., can solve the problem of weak binding force between catalyst and filter fiber, and difficulty in loading denitrification and anti-sulfur catalysts , catalyst load unevenness and other issues, to achieve high-efficiency denitrification and anti-sulfur performance, improve anti-sulfur activity, and inhibit the effect of vulcanization

Inactive Publication Date: 2017-10-20
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, domestic research in this area is almost blank, mainly because the surface of the filter material is smooth and its chemical properties are stable, making it difficult for the denitrification and anti-sulfur catalyst to be loaded on the surface of the filter material.
Moreover, it can be seen from domestic and foreign research related to this time that the general method is to directly attach the denitrification and anti-sulfur catalyst to the filter fiber, but the denitrification and anti-sulfur functional composite filter material prepared by this method has catalyst loading. Disadvantages such as unevenness, poor air permeability and weak binding force between the catalyst and the filter fiber

Method used

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  • In-situ supported denitration sulfur-resistant catalyst compound filter material and preparation method thereof
  • In-situ supported denitration sulfur-resistant catalyst compound filter material and preparation method thereof
  • In-situ supported denitration sulfur-resistant catalyst compound filter material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The preparation method of the composite filter material supporting the denitrification and antisulfur catalyst in situ, the specific steps are:

[0028] 1) Add 0.02g of sodium dodecylbenzenesulfonate into 50mL of deionized water, stir and dissolve to obtain a sodium dodecylbenzenesulfonate solution;

[0029] 2) Weigh a piece of polyphenylene sulfide needle felt with a mass of 0.6g, put it into the solution in step 1), and ultrasonically treat it for 2 hours;

[0030] 3) Add 0.3399gCoCl 2 ·6H 2 O was added to the solution after ultrasonication in step 2), ultrasonicated until the solute was completely dissolved, then stirred at room temperature for 12 hours, so that enough cobalt ions were adsorbed on the surface of PPS;

[0031] 4) Slowly pour 50mL of 0.010mol / L potassium dichromate solution into the solution obtained in step 3), and stir the reaction in a water bath at 80°C for 4.5h until the orange-red color of the solution disappears, which indicates that the react...

Embodiment 2

[0034] The preparation method of the composite filter material supporting the denitrification and antisulfur catalyst in situ, the specific steps are:

[0035] 1) Add 0.02g of sodium dodecylbenzenesulfonate into 50mL of deionized water, stir and dissolve to obtain a sodium dodecylbenzenesulfonate solution;

[0036] 2) Weigh a piece of polyphenylene sulfide needle felt with a mass of 0.6g, put it into the solution in step 1), and ultrasonically treat it for 2 hours;

[0037] 3) Add 0.4249g CoCl 2 ·6H 2 Add O into the solution after ultrasonication in step 2), shake until the solute is completely dissolved, then stir at room temperature for 12 hours, so that enough cobalt ions are adsorbed on the surface of PPS;

[0038] 4) Slowly pour 50mL of 0.012mol / L potassium permanganate solution into the solution obtained in step 2), and stir the reaction in a water bath at 80°C for 4.5h until the orange-red color of the solution disappears, which indicates that the reaction is over, ta...

Embodiment 3

[0041] The preparation method of the composite filter material supporting the denitrification and antisulfur catalyst in situ, the specific steps are:

[0042] 1) Add 0.02g of sodium dodecylbenzenesulfonate into 50mL of deionized water, stir and dissolve to obtain a sodium dodecylbenzenesulfonate solution;

[0043] 2) Weigh a piece of polyphenylene sulfide needle felt with a mass of 0.6g, put it into the solution in step 1), and ultrasonically treat it for 2 hours;

[0044] 3) 0.5098g CoCl 2 ·6H 2 Add O into the solution after ultrasonication in step 2), shake until the solute is completely dissolved, then stir at room temperature for 12 hours, so that enough cobalt ions are adsorbed on the surface of PPS;

[0045] 4) Slowly pour 50mL of 0.014mol / L potassium permanganate solution into the solution obtained in step 2), and stir the reaction in a water bath at 80°C for 4.5h until the orange-red color of the solution disappears, which indicates that the reaction is over, take o...

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Abstract

The invention discloses an in-situ supported denitration sulfur-resistant catalyst compound filter material and a preparation method thereof. The preparation method includes the steps: taking PPS (polyphenylene sulfite) needled felts as filter materials; performing surface pretreatment on the needled felt filter materials by the aid of sodium dodecyl benzene sulfonate; cladding filter fiber surfaces by the aid of pi-pi conjugation mechanisms, and adsorbing added cobalt ions to fiber material surfaces through electrostatic interaction; adding potassium dichromate to serve as oxidizing agents; performing oxidation-reduction reaction on PPS filter fiber surfaces, and forming Cr2O3 and CoOx catalysts on the fiber material surfaces in situ to form the compound filter material with an efficient denitration sulfur-resistant function. The method has the advantages that the method is simple in preparation process, environmentally friendly and low in production cost, the catalysts and filter materials are firmly combined and the like, the prepared compound filter material is excellent in low-temperature activity, has excellent denitration effect on nitrogen oxide in flue gas and high sulfur-resistant function and can solve the problems that a tail purification system is complicated, high in cost and the like in the prior art.

Description

technical field [0001] The invention belongs to the technical field of functional composite filter materials, and in particular relates to a composite filter material with an in-situ loaded denitrification and anti-sulfur catalyst and a preparation method thereof. Background technique [0002] my country is in a stage of rapid economic development, and the demand for energy is huge, especially the demand for electricity is increasing. However, my country's coal-themed energy structure determines that my country's electric power is dominated by thermal power, and most of the power plants are coal-fired power plants. In addition to ensuring rapid economic development, coal-fired power plants will produce a large amount of pollutants, such as dust, sulfur dioxide and NO x Toxic gas etc. At present, filter bag dust collectors are mainly used in the industry to control a large amount of dust and trace particles produced by coal-fired power plant boilers, and the core is the fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/56B01D39/14B01D39/16B01J23/86
CPCB01D53/8628B01D39/14B01D39/1653B01D53/56B01D2239/0407B01D2239/0492B01D2239/10B01J23/002B01J23/864B01J2523/00B01J2523/67B01J2523/845
Inventor 郑玉婴付彬彬
Owner FUZHOU UNIV
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