Composite filter material loaded with three-way denitrification and anti-sulfur catalyst in situ and preparation method thereof

A composite filter material and catalyst technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of weak binding force between catalyst and filter fiber, difficult loading of denitrification and anti-sulfur catalyst, uneven catalyst loading, etc. , achieve good oxygen storage and redox performance, uniform and firm loading, and improve anti-sulfur activity

Active Publication Date: 2019-01-22
FUZHOU UNIV
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  • Summary
  • 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 polyphenylene sulfide 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 related research at home and abroad 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 insufficient catalyst load. Disadvantages such as uniformity, poor air permeability and weak binding force between the catalyst and the filter fiber

Method used

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  • Composite filter material loaded with three-way denitrification and anti-sulfur catalyst in situ and preparation method thereof
  • Composite filter material loaded with three-way denitrification and anti-sulfur catalyst in situ and preparation method thereof
  • Composite filter material loaded with three-way denitrification and anti-sulfur catalyst in situ and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Weigh a piece of polyphenylene sulfide needle felt with a mass of 0.7g, put it into a beaker, then add 0.0273g of sodium lauryl sulfate, and add 50mL of deionized water, and ultrasonicate the solution for 1h ;

[0027] 2) After ultrasonic treatment, add 0.0534g of anhydrous ferric chloride and 0.1226g of cerium chloride heptahydrate to it, ultrasonic or shake until the solute is completely dissolved, then stir at room temperature for 12 hours, so that enough iron ions and cerium ions are adsorbed on the surface of PPS ;

[0028] 3) Slowly pour 50mL of 0.013mol / L potassium permanganate solution into the solution obtained in step 2), stir and react in a water bath at 80°C for 4.5h, until the purple color of the solution disappears, which indicates that the reaction is over, take out the filter material , washed repeatedly with deionized water and ethanol several times until the extruded liquid of the filter material is clear, and then dried in an oven at 110°C for 8-1...

Embodiment 2

[0031] 1) Weigh a piece of polyphenylene sulfide needle felt with a mass of 0.7g, put it into a beaker, then add 0.0273g of sodium lauryl sulfate, and add 50mL of deionized water, and ultrasonicate the solution for 1h ;

[0032] 2) After ultrasonic treatment, add 0.0801g of anhydrous ferric chloride and 0.1839g of cerium chloride heptahydrate to it, solute or shake until the solute is completely dissolved, then stir at room temperature for 12 hours, so that enough iron and cerium ions are adsorbed on the surface of PPS;

[0033] 3) Slowly pour 50mL of 0.020mol / L potassium permanganate solution into the solution obtained in step 2), stir and react in a water bath at 80°C for 4.5h, until the purple color of the solution disappears, indicating that the reaction is over, take out the filter material , washed repeatedly with deionized water and ethanol several times until the extruded liquid of the filter material is clear, and then dried in an oven at 110°C for 8-12 hours to obtai...

Embodiment 3

[0036] 1) Weigh a piece of polyphenylene sulfide needle felt with a mass of 0.7g, put it into a beaker, then add 0.0273g of sodium lauryl sulfate, and add 50mL of deionized water, and ultrasonicate the solution for 1h ;

[0037]2) After ultrasonic treatment, add 0.1068g of anhydrous ferric chloride and 0.2452g of cerium chloride heptahydrate to it, ultrasonic or shake until the solute is completely dissolved, then stir at room temperature for 12 hours, so that enough iron and cerium ions are adsorbed on the surface of PPS;

[0038] 3) Slowly pour 50mL of 0.026mol / L potassium permanganate solution into the solution obtained in step 2), stir and react in a water bath at 80°C for 4.5h, until the purple color of the solution disappears, which indicates that the reaction is over, take out the filter material , washed repeatedly with deionized water and ethanol several times until the extruded liquid of the filter material is clear, and then dried in an oven at 110°C for 8-12 hours ...

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Abstract

The invention discloses a ternary denitration sulfur-resistant catalyst in-situ loaded compound filter material and a preparation method thereof. The preparation method includes: taking a polyphenylene sulfide filter material as a catalyst carrier, and adopting lauryl sodium sulfate for surface modification of a polyphenylene sulfide needled felt to activate the polyphenylene sulfide filter material; taking potassium permanganate, anhydrous ferric chloride and cerium trichloride heptahydrate as catalyst precursors and taking deionized water as a solvent to realize one-step in-situ loading of a MnO2-Fe2O3-CeOx catalyst on the surface of the activated polyphenylene sulfide filter material. The compound filter material is firm in combination of the catalyst and polyphenylene sulfide fibers, excellent in low-temperature activity and denitration effect on nitric oxides in smoke and great in sulfur resistance, and defects of high cost, complexity and the like of a tail purification system in the prior art can be overcome. The ternary denitration sulfur-resistant catalyst in-situ loaded compound filter material and the preparation method thereof have advantages of technical simplicity in preparation, environment friendliness, low production cost and promising application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional composite filter materials, and in particular relates to an in-situ loaded MnO 2 -Fe 2 o 3 -CeO x The invention discloses a composite filter material of a three-way denitrification 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-based 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. Coal-fired power plants produce large amounts 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 filter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/08B01D53/56B01D53/86
CPCB01D39/083B01D53/8628B01D2239/0208B01D2239/0492B01D2239/0604B01D2239/10B01D2255/2065B01D2255/2073B01D2255/20738
Inventor 郑玉婴付彬彬
Owner FUZHOU UNIV
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