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Fiber-based corrugated photocatalytic module and preparation method thereof

A photocatalysis and fiber technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of high heat treatment process requirements, complex preparation process, and influence on catalytic performance, and achieve excellent light transmission, simple production process, Effect of large reactive surface area and porosity

Inactive Publication Date: 2020-05-19
QINGDAO HSJ ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has high photocatalytic activity, but the preparation process is complex, requiring repeated slurry-drying, and the processing cycle is long
Patent CN108636391S discloses a supported titanium dioxide photocatalytic material and its preparation method, using commercial TiO 2 The powder is the raw material for the coating. The coating slurry is prepared by dispersing, and then the carrier is coated. After subsequent drying and roasting, the photocatalytic module is obtained. The heat treatment process of the catalytic module requires high requirements, and the coating has low strength and is easy to fall off. Disadvantages, high temperature heat treatment can easily cause TiO 2 Crystalline transformation, which in turn affects catalytic performance

Method used

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  • Fiber-based corrugated photocatalytic module and preparation method thereof
  • Fiber-based corrugated photocatalytic module and preparation method thereof
  • Fiber-based corrugated photocatalytic module and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Prepare the photocatalytic module as follows:

[0077] S1, preparation of catalyst sol

[0078] S11. Stir 5.2Kg butyl titanate to obtain solution A;

[0079] S12. Mix 9.1Kg of absolute ethanol, 7.1Kg of glacial acetic acid and 0.8Kg of deionized water, and stir evenly to obtain solution B;

[0080] S13. Keep the solution A stirring, slowly add the solution B into the solution A, stir and mix for 30 minutes; then add 1.8Kg diethanolamine, stir and age for 12 hours to obtain a catalyst sol;

[0081] S2. Catalytic module coating

[0082] S21, placing the monolithic catalytic module carrier in the catalyst sol obtained in step S13, soaking for 10 minutes, and vacuum purging the excess sol after taking it out;

[0083] S22. The module coated with the catalyst sol in step S22 is dried in hot air at a drying temperature of 80°C and a drying time of 30 minutes;

[0084] S33, steps S21, S22 are repeated, and then the semi-finished catalytic module coated with the catalyst so...

Embodiment 2

[0087] Prepare the photocatalytic module as follows:

[0088] S1, preparation of catalyst sol

[0089] S11. Mix 5.2Kg butyl titanate and 6.1Kg absolute ethanol, and stir evenly to obtain solution A;

[0090] S12. Mix 3.0Kg absolute ethanol, 3.5Kg glacial acetic acid and 0.6Kg deionized water, and stir evenly to obtain solution B;

[0091] S13. Keep the solution A stirring, slowly add the solution B into the solution A, stir and mix for 30 minutes; then add 1.0Kg glycerol and 1.0Kg diethanolamine, stir and age for 12 hours to obtain a catalyst sol;

[0092] S2. Catalytic module coating

[0093] S21, placing the monolithic catalytic module carrier in the catalyst sol obtained in step S13, soaking for 10 minutes, and vacuum purging the excess sol after taking it out;

[0094] S22. The module coated with the catalyst sol in step S22 is dried in hot air at a drying temperature of 80°C and a drying time of 30 minutes;

[0095] S33, steps S21, S22 are repeated, and then the semi-...

Embodiment 3

[0098] Prepare the photocatalytic module as follows:

[0099] S1, preparation of catalyst sol

[0100] S11. Mix 4.34Kg isopropyl titanate and 9.8Kg absolute ethanol, and stir evenly to obtain solution A;

[0101] S12. Mix 4.8Kg absolute ethanol, 3.5Kg glacial acetic acid and 0.8Kg deionized water, and stir evenly to obtain solution B;

[0102] S13. Keep the solution A stirring, slowly add the solution B into the solution A, stir and mix for 30 minutes; then add 2.0Kg triethanolamine, stir and age for 12 hours to obtain a catalyst sol;

[0103] S2. Catalytic module coating

[0104] S21, placing the monolithic catalytic module carrier in the catalyst sol obtained in step S13, soaking for 10 minutes, and vacuum purging the excess sol after taking it out;

[0105] S22. The module coated with the catalyst sol in step S22 is dried in hot air at a drying temperature of 100°C and a drying time of 20 minutes;

[0106] S33, steps S21 and S22 are repeated, and then the semi-finished ...

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Abstract

The invention provides a fiber-based corrugated photocatalytic module and a preparation method thereof. The photocatalytic module is mainly used for photocatalytic degradation of pollutants. Accordingto the preparation method of the fiber-based corrugated photocatalysis module in the invention, the photocatalytic module is composed of a plurality of catalyst units which are stacked in sequence and a module shell; the plurality of the catalyst units which are stacked in sequence are packaged in the module shell; each catalyst unit comprises a carrier and a nanometer TiO2 catalyst layer which is embedded into the carrier and is uniformly distributed on the surface of the carrier; the carrier is formed by bonding and compounding corrugated refractory fiber paper and planar refractory fiber paper; and the corrugated refractory fiber paper is prepared by processing the planar refractory fiber paper. The photocatalysis module has the characteristics of high activity, strong impact resistance, free assembling of specifications and sizes and the like.

Description

technical field [0001] The invention relates to the field of environmental functional materials, in particular to a fiber-based corrugated photocatalytic module and a preparation method thereof. Background technique [0002] Industrial organic waste gas (VOCs) has become one of the main pollutants in the atmosphere and has a high contribution to atmospheric environmental pollution. VOCs mainly include non-methane total hydrocarbons, oxygen-containing, nitrogen-containing, sulfur-containing organic compounds and other organic compounds. VOCs are highly toxic to the sense of smell, respiratory system and lungs, and can irritate the skin and eyes, leading to leukemia and liver and kidney failure. In addition, it also has the "three-cause" effect, which accumulates in the human body, causes cancer, and gene mutation, which is extremely harmful to human health. For the atmospheric environment, VOCs are one of the main substances that cause acid rain, photochemical smog and ozone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44
CPCB01D53/8687B01D2255/802B01D2257/708
Inventor 展宗城郭聪梁鹏展飞杨艳林李晨灿孟庆锐郅立鹏陈继朝
Owner QINGDAO HSJ ENVIRONMENTAL PROTECTION TECH CO LTD
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