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Preparation method of dust removal and VOCS removal synergistic photocatalysis filter material and prepared filter material

A technology of photocatalysis and filter materials, applied in the direction of catalyst activation/preparation, chemical instruments and methods, separation methods, etc., can solve the problem of uneven distribution of TiO2 in photocatalytic filter materials, and achieve good photocatalytic performance

Pending Publication Date: 2022-07-15
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the existing method of impregnating TiO 2 The method of loading on the filter material, the prepared photocatalytic filter material distributes TiO 2 uneven problem

Method used

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  • Preparation method of dust removal and VOCS removal synergistic photocatalysis filter material and prepared filter material

Examples

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Effect test

Embodiment 1

[0038] A preparation method of a dedusting and VOCS synergistic photocatalytic filter material, comprising the following steps:

[0039] (1) Preparation of silver nitrate solution

[0040] Weigh 10-20g of silver nitrate, put it in 390mL of water and stir until dissolved;

[0041] (2) Preparation of sodium dihydrogen phosphate / PTFE composite film-forming dipping solution

[0042] Weigh 5-10g of sodium dihydrogen phosphate and dissolve it in 390mL of water, then add 30g of PTFE emulsion and 5g of epoxy resin, and stir on a magnetic stirrer at a speed of 500r / min for 30min to prepare sodium dihydrogen phosphate for PTFE non-woven fabric / PTFE composite film-forming dipping solution;

[0043] (3) Preparation of needle felt

[0044] The PTFE short fibers are opened, mixed, finely opened, carded, netted, added with PTFE base cloth, and needled to make semi-finished needled felts. The unit weight of the semi-finished needled felts is controlled at 780-830g / m 2 ;

[0045] (4) The...

Embodiment 2

[0051] A preparation method of a dedusting and VOCS synergistic photocatalytic filter material, comprising the following steps:

[0052] (1) Preparation of silver nitrate solution

[0053] Weigh 20-30g silver nitrate, put it in 390mL water and stir until dissolved;

[0054] (2) Preparation of sodium dihydrogen phosphate / PTFE composite film-forming dipping solution

[0055] Weigh 10-15g of sodium dihydrogen phosphate and dissolve it in 390mL of water, then add 30g of PTFE emulsion and 5g of adhesive, and stir on a magnetic stirrer at a speed of 500r / min for 30min to prepare sodium dihydrogen phosphate for PTFE nonwoven fabric / PTFE composite film-forming dipping solution;

[0056] (3) Preparation of needle felt

[0057] The PTFE short fibers are opened, mixed, finely opened, carded, netted, added with PTFE base cloth, and needled to make semi-finished needled felts. The unit weight of the semi-finished needled felts is controlled at 780-830g / m 2 ;

[0058] (4) The first st...

Embodiment 3

[0064] A preparation method of a dedusting and VOCS synergistic photocatalytic filter material, comprising the following steps:

[0065] (1) Preparation of silver nitrate solution

[0066] Weigh 30-40g of silver nitrate, put it in 390mL of water and stir until dissolved;

[0067] (2) Preparation of sodium dihydrogen phosphate / PTFE composite film-forming dipping solution

[0068] Weigh 15-20g of sodium dihydrogen phosphate and dissolve it in 390mL of water, then add 30g of PTFE emulsion and 5g of adhesive, and stir on a magnetic stirrer for 30min at a speed of 500r / min to prepare sodium dihydrogen phosphate for PTFE nonwoven fabric / PTFE composite film-forming dipping solution;

[0069] (3) Preparation of needle felt

[0070] The PTFE short fibers are opened, mixed, finely opened, carded, netted, added with PTFE base cloth, and needled to make semi-finished needled felts. The unit weight of the semi-finished needled felts is controlled at 780-830g / m 2 ;

[0071] (4) The fi...

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Abstract

The invention discloses a preparation method of a dust removal and VOCS removal synergistic photocatalysis filter material. The preparation method comprises the following steps: (1) preparing a silver nitrate solution; (2) preparing a sodium dihydrogen phosphate / PTFE composite film-forming impregnation liquid; (3) preparing a needled felt; (4) carrying out first-step treatment on the filter material; and (5) carrying out second-step treatment on the filter material. Ag3PO4 is adopted as a photocatalyst, a PTFE needling filter material is soaked in a silver nitrate solution to be completely soaked and fully absorbed, then the PTFE needling filter material is placed in a PTFE and sodium dihydrogen phosphate composite emulsion, silver nitrate in the PTFE needling filter material and sodium dihydrogen phosphate in the composite emulsion are subjected to an in-situ precipitation reaction at the moment, the silver phosphate photocatalyst is generated, and therefore the silver phosphate photocatalyst is obtained. The Ag3PO4 photocatalyst can be uniformly distributed on the filter material, and the Ag3PO4 has good photocatalytic performance under visible light and ultraviolet light, so that organic pollutants can be effectively oxidized and reduced into water and carbon dioxide.

Description

technical field [0001] The invention relates to the technical field of filter material production, and more particularly, to a preparation method of a dedusting and VOCS synergistic photocatalytic filter material and the prepared filter material. Background technique [0002] As a kind of dry dust removal device, bag filter has high dust removal efficiency. Under normal circumstances, the dust removal efficiency can reach more than 99%. As the core of bag filter, filter bag plays a vital role. At present, the commonly used filter bags on the market are generally non-woven fabrics, such as polyester and acrylic at low temperature, PTFE, PPS and glass fiber at high temperature. [0003] Coal-fired power plants generate VOCs due to insufficient combustion and other reasons. VOCs are usually divided into several categories such as non-methane hydrocarbons (NMHCs), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, and sulfur-con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D39/14B01J27/18B01J31/06B01J31/26B01J35/00B01J37/02B01J37/03B01D53/44
CPCB01D53/8687B01D39/14B01J31/26B01J31/06B01J37/0203B01J37/035B01J27/1817B01J35/39
Inventor 胡俊俊杜鹏飞杨东周冠辰严烁聂孙建
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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