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A filter material with mercury removal effect and preparation method thereof

A filter material and efficiency technology, applied in the field of filter material with mercury removal effect 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: 2017-09-05
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

[0005] The purpose of the present invention is to solve some problems existing in the existing mercury removal and heavy metal filter material technology, and to provide a filter material with mercury removal effect and its preparation method

Method used

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  • A filter material with mercury removal effect and preparation method thereof
  • A filter material with mercury removal effect and preparation method thereof
  • A filter material with mercury removal effect and preparation method thereof

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preparation example Construction

[0029] A preparation method of a filter material with mercury removal effect, comprising the following steps: (1) after mixing active metal catalyst powder and PTFE resin powder, respectively making PTFE fiber containing catalyst and PTFE microporous film containing catalyst; 2) the PTFE fibers containing the catalyst and the high-strength PTFE fibers are made into a warp beam in a manner of alternate arrangement of 1-10:1-10, and the PTFE base cloth layer is made by weaving in a weaving mode; (3) the base material and the PTFE fiber containing The short PTFE fibers of the catalyst are mixed and put into the needle punching machine together with the PTFE base cloth layer, and a catalytic PTFE fiber strength layer is formed on both sides of the PTFE base cloth layer to make a PTFE composite needle felt; (4) the active metal catalyst emulsion Mixed with PTFE emulsion to make catalyst mixed treatment solution, the PTFE composite needle felt is impregnated as a whole, and then sint...

Embodiment 1

[0032] The active catalyst V 2 o 5 / TiO 2 The micropowder and PTFE resin are uniformly mixed together at a ratio of 5:95 to make PTFE fibers containing catalysts and PTFE microporous films containing catalysts respectively; among them, the type and quality of additives can be arbitrarily selected according to needs. The PTFE fiber containing the catalyst is mainly used to make woven filter cloth, and the PTFE microporous film containing the catalyst is finally coated on the surface of the filter material. By implanting an active catalyst in the filter material, it can achieve the effect of removing harmful substances such as mercury and heavy metals in the flue gas while filtering the flue dust. Specific steps are as follows:

[0033] One is the warping process of PTFE fibers containing catalysts and high-strength PTFE fibers before weaving, using a 1:1 alternate arrangement to make warp beams, and weaving them into PTFE base fabrics by weaving to obtain PTFE base fabric la...

Embodiment 2

[0042] The active catalyst V 2 o 5 -WO 3 / TiO 2 The micropowder and PTFE resin are uniformly mixed together at a ratio of 8:92 to make PTFE fibers containing catalysts and PTFE microporous films containing catalysts respectively; among them, the type and quality of additives can be arbitrarily selected according to needs. The PTFE fiber containing the catalyst is mainly used to make woven filter cloth, and the PTFE microporous film containing the catalyst is finally coated on the surface of the filter material. By implanting an active catalyst in the filter material, it can achieve the effect of removing harmful substances such as mercury and heavy metals in the flue gas while filtering the flue dust. Specific steps are as follows:

[0043] One is the warping process of PTFE fibers containing catalysts and high-strength PTFE fibers before weaving, using a 1:1 alternate arrangement to make warp beams, and weaving them into PTFE base fabrics by weaving to obtain PTFE base fa...

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Abstract

The invention provides a method for preparing a filter material with mercury removal effect, comprising the following steps: (1) After mixing active metal catalyst powder and PTFE resin powder, respectively making PTFE fibers containing catalyst and PTFE microparticles containing catalyst Porous film; (2) the PTFE fiber that contains catalyst and the high-strength PTFE fiber adopt the mode that 1-10:1-10 is alternately arranged to make warp beam, adopt the mode of weaving to make PTFE base cloth layer; (3) base Material is mixed with PTFE short fibers containing catalyst and then put into needle punching machine together with PTFE base cloth layer to make PTFE composite needle felt; (4) Mix active metal catalyst emulsion and PTFE emulsion to make catalyst mixed treatment liquid. The PTFE composite needle felt is sintered at 280-350°C after the overall impregnation treatment; (5) The sintered PTFE composite needle felt and the PTFE microporous film containing the catalyst are simultaneously introduced into the hot laminating machine, and the surface is hot pressed Laminating processing. The invention can remarkably improve the filtering accuracy and the mercury and heavy metal removal efficiency.

Description

technical field [0001] The invention relates to the field of environmental dust removal and flue gas purification, in particular to a filter material with mercury removal effect and a preparation method thereof. Background technique [0002] Mercury is a toxic heavy metal trace element in coal. Mercury pollution is extremely harmful to humans and the biological environment. The total amount of mercury emitted into the atmosphere globally is about 5000t per year, of which 4000t is the result of man-made, and the man-made sources of mercury environmental pollution are mainly the burning of fossil fuels, the smelting of mercury ore and other metals, the chlor-alkali industry and the electrical industry. Use mercury, etc., of which the largest share comes from combustion. [0003] The mercury content in coal in the world is generally (0.012-33) mg / kg, the average mercury content is about 0.13 mg / kg, the crustal abundance is 0.089, the world coal mercury content is 0.012 mg / kg, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/00B01D53/86B01D53/64B32B27/02B32B27/30B32B5/02B32B27/18B32B7/08
Inventor 李刚
Owner 辽宁新洪源环保材料有限公司
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