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Filter material

A filter material and filter surface technology, applied in the direction of filtration separation, dispersed particle filtration, layered products, etc., can solve the problems of short service life, high pressure loss, unstable uniformity of filter surface thickness, etc., and achieve low pressure difference , The effect of high capture efficiency

Pending Publication Date: 2022-04-22
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the non-uniform thickness ratio of short polyphenylene sulfide fibers that make up the filter material, the thickness uniformity of the filter surface layer is unstable, and the resulting filter material has low collection efficiency, high pressure loss, and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In the spinning process, spinnerets with different hole sizes are used to spit out, after suction, stretching, heat setting, and crimping, polyphenylene sulfide fibers with different deniers are entangled together and dried together, and then cut to obtain 50 weight % finer polyphenylene sulfide fibers with a fineness of 0.9dtex and a CV value of 9.1% and 50% by weight of thick polyphenylene sulfide fibers with a fineness of 1.5dtex are opened, carded, laid, and pre-needled by an opener After puncturing and spunlace, a polyphenylene sulfide nonwoven fabric with a thickness of 0.8 mm and a CV value of 1.5% was prepared as the filter surface layer; polyphenylene sulfide fibers were used for weaving to obtain a polyphenylene sulfide plain weave fabric as a fabric Reinforcement layer: use ordinary denier polyphenylene sulfide fiber, after opening, carding, laying and needle punching, the fiber net is made as the non-filtering surface layer. Then acupuncture is carried out i...

Embodiment 2

[0051] In the spinning process, spinnerets with different hole sizes are used to spit out, after suction, stretching, heat setting, and crimping, polyphenylene sulfide fibers with different deniers are entangled together and dried together, and then cut to obtain 50 weight % of the polyphenylene sulfide fine fibers with a fineness of 0.5dtex and a content CV value of 8.4% and 50% by weight of polyphenylene sulfide coarse fibers with a fineness of 1.2dtex are opened, carded, laid, and prefabricated by an opener. After acupuncture and spunlace, a polyphenylene sulfide nonwoven fabric with a thickness of 0.8mm and a CV value of 1.6% was prepared as the filter surface layer. All the other are the same as embodiment 1, and the final obtained grammage is 550g / m 2 filter material. The physical properties of the filter material of the present invention are shown in Table 1.

Embodiment 3

[0053] In the spinning process, spinnerets with different hole sizes are used to spit out, after suction, stretching, heat setting, and crimping, polyphenylene sulfide fibers with different deniers are entangled together and dried together, and then cut to obtain 50 weight % of finer polyphenylene sulfide fibers with a fineness of 0.7dtex and a CV value of 9.8% and 50% by weight of thick polyphenylene sulfide fibers with a fineness of 1.5dtex are opened by the opener, carded, laid, and prefabricated. After acupuncture and spunlace, a polyphenylene sulfide nonwoven fabric with a thickness of 0.8mm and a CV value of 1.5% was prepared as the filter surface layer. All the other are the same as embodiment 1, and the final obtained grammage is 550g / m 2 filter material. The physical properties of the filter material of the present invention are shown in Table 1.

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Abstract

The invention discloses a filtering material which comprises a filtering surface layer, a fabric reinforcing layer and a non-filtering surface layer, the filtering surface layer is composed of polyphenylene sulfide fine fibers with the fiber number being 1.0 dtex or below and polyphenylene sulfide crude fibers, the fiber number of the polyphenylene sulfide crude fibers is 0.3-0.8 dtex larger than that of the polyphenylene sulfide fine fibers, and the fiber number of the fabric reinforcing layer is 0.3-0.8 dtex larger than that of the polyphenylene sulfide fine fibers. And the thickness CV value of the filtering surface layer is below 4.0%. The filtering material disclosed by the invention has the characteristics of high trapping efficiency and low pressure difference, and can be applied to filtering systems of garbage incinerators, coal-fired boilers and asphalt or metal smelting furnaces.

Description

technical field [0001] The invention relates to a filter material. Background technique [0002] At present, domestic industries such as iron and steel, electric power, asphalt and waste incineration use bag filters for high temperature resistant smoke and dust filtration. ) Corrosion, high temperature resistance and other advantages. [0003] However, in the prior art, filter materials made of chemical fibers are generally used in bag filters. At present, chemical fibers of two different thicknesses are mostly used to form the filter surface of the filter material. Although the filter performance of the obtained filter material is It has been improved, but due to the poor distribution of chemical fibers, the thickness uniformity of the filter surface layer of the obtained filter material will also become poor. If the filter material is used for a long time, its filtering performance will be greatly reduced. [0004] For example, Chinese published patent CN111038036A discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B01D46/02B32B27/02B32B27/12B32B27/28B32B33/00
CPCB01D39/1623B01D46/02B32B5/02B32B5/26B32B33/00B01D2239/065B01D2239/10B32B2250/03B32B2262/02
Inventor 周豪亮张磊
Owner TORAY FIBER RES INST(CHINA) CO LTD