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Deodorizing filter

A technology of filters and complexes, applied in deodorization, filtration separation, chemical instruments and methods, etc., can solve the problems of high cost

Active Publication Date: 2006-11-29
SUMINOE TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in these conventional technologies, an adsorbent and a catalyst are used in combination, and the odor adsorbed on the adsorbent is decomposed under the action of the catalyst to complete deodorization. This is an effective deodorization method, but there is a problem of relatively high cost.

Method used

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Examples

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Embodiment 1

[0060] 70 parts by mass of coconut shell activated carbon and 30 parts by mass of natural pulp were added to 200 parts by mass of water to prepare an aqueous slurry. The obtained aqueous aggregate dispersion was formed into a sheet by a wet papermaking method using a paper machine, and dried to obtain an activated carbon-blended paper. A part of the obtained activated carbon mixed paper was processed into corrugated paper using a corrugator. The corrugated paper and the flat paper were bonded and laminated with an adhesive composed of an ethylene-vinyl acetate copolymer to obtain a filter medium with a cell density of 230 cells / inch2. The filter material was cationized with an aqueous solution of 3-chloro-2-hydroxypropyltrimethylammonium chloride, and then dried. Then the filter material after the cationization treatment is impregnated in the alkaline aqueous solution containing 0.5% by mass of sodium phthalocyanine cobalt polysulfonate and 5g / L of sodium hydroxide, then wash...

Embodiment 2

[0063] A deodorizing filter 1 was obtained in the same manner as in Example 1, except that an aqueous alkali solution containing 0.5% by mass of sodium phthalocyanine cobalt polysulfonate and 50 g / L of sodium hydroxide was used as the aqueous alkali solution. The pH of the first deodorizing filter 2 set as a high-pH environment was 12.0.

Embodiment 3

[0065] A deodorizing filter 1 was obtained in the same manner as in Example 1, except that an aqueous alkali solution containing 1.5% by mass of sodium phthalocyanine cobalt polysulfonate and 5 g / L of sodium hydroxide was used as the aqueous alkali solution. In addition, in the obtained deodorizing filter 1, the supported amount of sodium phthalocyanine cobalt polysulfonate on the activated carbon mixed paper was 1000 μg / g.

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Abstract

A deodorizing filter (1) characterized by comprising a first deodorizing filter (2) regulated so as to have a high-pH environment and a second deodorizing filter (3) regulated so as to have a low-pH environment. The first deodorizing filter and / or second deodorizing filter preferably comprises an active-carbon-filled paper and, supported thereon, a cobalt phthalocyanine complex and an iron phthalocyanine complex.

Description

technical field [0001] The present invention relates to a deodorizing filter used, for example, as a filter device as described below, and in particular to a filter capable of effectively decomposing and purifying a variety of malodorous gases with different properties. , filter media for air cleaners, refrigerators, etc., or filter media for removing odors in cars, or filter media for removing bad odors in toilets, etc. Background technique [0002] Deodorizing filters can be used for various purposes. The deodorizing methods can be roughly divided into adsorption type using absorbent materials such as activated carbon and zeolite, and catalytic type using ozone, photocatalyst, phthalocyanine metal complex, etc. to decompose and remove odorous substances. , or use a mixture of the adsorption type and the catalytic type. Among them, the technology utilizing the excellent adsorption effect of activated carbon is well known. However, although these technologies are excellent ...

Claims

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Application Information

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IPC IPC(8): A61L9/00A61L9/014A61L9/16
CPCA61L9/014A61L9/16A61L9/00B01D39/00
Inventor 濑户保太郎中村达男西野善春福井直美
Owner SUMINOE TEXTILE CO LTD
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