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High performance polytetrafluoroethylene functional filter material for denitration and dioxin removal and preparation method thereof

A polytetrafluoroethylene, high-performance technology, applied in the field of high-performance polytetrafluoroethylene functional filter material and its preparation, to achieve the effects of increasing contact area, improving catalytic decomposition efficiency, reducing energy consumption and operation and maintenance costs

Active Publication Date: 2015-12-23
辽宁新洪源环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve some problems existing in the existing desulfurization filter material technology, to provide a high-performance polytetrafluoroethylene functional filter material for denitrification and dioxin and its preparation method

Method used

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  • High performance polytetrafluoroethylene functional filter material for denitration and dioxin removal and preparation method thereof
  • High performance polytetrafluoroethylene functional filter material for denitration and dioxin removal and preparation method thereof
  • High performance polytetrafluoroethylene functional filter material for denitration and dioxin removal and preparation method thereof

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preparation example Construction

[0028] A method for preparing a high-performance polytetrafluoroethylene functional filter material for denitration and dioxin, including the following steps: (1) After mixing active metal catalyst powder and PTFE resin powder, they are made into PTFE fibers and Catalyst-containing PTFE microporous membrane; (2) The catalyst-containing PTFE fiber and high-strength PTFE fiber are alternately arranged 1-10:1-10 to make warp beams, which are woven into PTFE base fabric layer by weaving (3) Mix the active metal catalyst emulsion and the PTFE emulsion to make a catalyst mixed treatment solution, impregnate the PTFE base fabric layer as a whole, and then sinter it at 300-350°C; (4) The sintered PTFE base fabric layer The PTFE microporous film containing the catalyst is introduced into the thermal laminating machine at the same time, and the surface is processed by hot pressing. The active metal catalyst in the step (1) is selected from V 2 O 5 , WO 3 , MoO 3 / TiO 2 One or more of the...

Embodiment 1

[0031] The active catalyst V 2 O 5 / TiO 2 Micropowder and PTFE resin are uniformly mixed together in a ratio of 3:97 to make PTFE fibers containing catalysts and PTFE microporous membranes containing catalysts respectively; the type and quality of additives can be selected arbitrarily according to needs. The catalyst-containing PTFE fiber is mainly used to make woven filter cloth, and the catalyst-containing PTFE microporous membrane is finally covered on the surface of the filter material. By implanting active catalysts in the filter material, the effect of removing harmful substances such as nitrogen oxides and dioxins in the flue gas while filtering the smoke is achieved. Specific steps are as follows:

[0032] One is the warping process of the catalyst-containing PTFE fiber and the high-strength PTFE fiber before weaving. The warp beam is made in a 1:2 alternate arrangement, and the PTFE base fabric is woven by weaving to obtain the PTFE base fabric layer. 3;

[0033] Second,...

Embodiment 2

[0040] The active catalyst V 2 O 5 -WO 3 / TiO 2 Micropowder and PTFE resin are uniformly mixed together in a ratio of 6:94 to form PTFE fibers containing catalysts and PTFE microporous membranes containing catalysts. Among them, the type and quality of additives can be selected arbitrarily according to needs. The catalyst-containing PTFE fiber is mainly used to make woven filter cloth, and the catalyst-containing PTFE microporous membrane is finally covered on the surface of the filter material. By implanting active catalysts in the filter material, the effect of removing harmful substances such as nitrogen oxides and dioxins in the flue gas while filtering the smoke is achieved. Specific steps are as follows:

[0041] One is the warping process of the catalyst-containing PTFE fiber and the high-strength PTFE fiber before weaving. The warp beam is made in a 1:1 alternate arrangement, and the PTFE base fabric is woven by weaving to obtain the PTFE base fabric layer. 3;

[0042] Se...

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Abstract

The invention provides a preparation method of a high performance polytetrafluoroethylene functional filter material for denitration and dioxin removal. The method includes the steps of: (1) mixing active metal catalyst powder with PTFE resin powder to make catalyst-containing PTFE fiber and a catalyst-containing PTFE microporous film respectively; (2) making the catalyst-containing PTFE fiber and high strength PTFE fiber into a warp beam by means of 1-10:1-10 alternate arrangement, and making a PTFE base cloth layer by machine weaving; (3) mixing an active metal catalyst emulsion with a PTFE emulsion to prepare a catalyst mixed treatment solution, conducting overall impregnation treatment on the PTFE base cloth layer, and then performing sintering at 300-350DEG C; and (4) introducing the sintered PTFE base cloth layer and the catalyst-containing PTFE microporous film into a hot film laminator simultaneously, and carrying out hot pressing laminating processing. The high performance polytetrafluoroethylene functional filter material provided by the invention can significantly improve the filtering precision and the efficiency of denitration and dioxin removal.

Description

Technical field [0001] The invention relates to the field of environmental protection dust removal flue gas purification, in particular to a high-performance polytetrafluoroethylene functional filter material for denitration and dioxin and a preparation method thereof. Background technique [0002] At present, with the rapid economic development, the emission of industrial waste gas has increased sharply. The pollution of the air environment in my country is becoming more and more serious, and it is gradually changing from soot-type pollution to mixed-type pollution. The total emissions of smoke, SOx, NOx, and Hg have ranked first in the world. Among them, nitrogen oxides and dioxins are one of the main pollutants in the atmosphere, and their emissions exceed the self-purification capacity of the environment, causing great harm and the environmental situation is very severe. Nitrogen oxides and dioxins are the most important gaseous pollutants that affect air quality, and are im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01J31/38B32B27/06B32B33/00
Inventor 李刚
Owner 辽宁新洪源环保材料有限公司
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