A kind of biomimetic catalytic filter material and its preparation method and application

A biomimetic catalysis and filter material technology, applied in chemical instruments and methods, separation methods, catalysts for physical/chemical processes, etc., can solve the problems of easy poisoning and deactivation of catalysts, complicated processing procedures, and condensation and paste bags in filter bags. Low VOC, avoid incomplete treatment, easy to produce

Active Publication Date: 2021-07-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical problem to be solved: Aiming at the problems in the prior art of cumbersome high-temperature exhaust gas treatment process, easy poisoning and deactivation of the catalyst, and dew condensation in the filter bag, the present invention provides a bionic catalytic filter material and its preparation method and application, which has the advantages of simple process , easy to operate and other advantages, suitable for large-scale preparation and production, can realize the integrated removal of dust and nitrate in the flue gas, can reduce the space required for dust removal and denitrification equipment, reduce the flue gas treatment process, reduce costs, and improve the service life of the catalyst

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  • A kind of biomimetic catalytic filter material and its preparation method and application
  • A kind of biomimetic catalytic filter material and its preparation method and application
  • A kind of biomimetic catalytic filter material and its preparation method and application

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Embodiment 1

[0028] A preparation method of a biomimetic catalytic filter material, the preparation process is as follows:

[0029] Step 1. Pretreatment: The dust filter bag is ultrasonically cleaned with acetone, ethanol and deionized water for 10 minutes respectively, and dried in an oven at 80°C for later use. The filter material of the dust filter bag is glass fiber.

[0030]Step 2. Preparation of superhydrophobic catalytic filter material solution: add 0.2 mass parts of water-based acrylic resin to 100 mass parts of superhydrophobic catalyst solution and stir for 10 min, then add 10 mass parts of fluorine-containing acrylic resin and 10 mass parts of PTFE emulsion, and then Stir at 500 rpm for 30 min, add 0.1 parts by mass of polyether-modified silicone dispersant, and continue stirring for 10 min to obtain a superhydrophobic catalytic filter material solution. The solid content of the superhydrophobic catalyst in the superhydrophobic catalyst solution is 6.9wt.%, and the solvent is ...

Embodiment 2

[0035] A preparation method of a biomimetic catalytic filter material, the preparation process is as follows:

[0036] Step 1. Pretreatment: The dust filter bag is ultrasonically cleaned with acetone, ethanol and deionized water for 15 minutes respectively, and dried in an oven at 120°C for later use. The filter material of the dust filter bag is polyphenylene sulfide.

[0037] Step 2. Preparation of superhydrophobic catalytic filter material solution: add 0.6 parts by mass of water-based acrylic resin to 100 parts by mass of superhydrophobic catalyst solution and stir for 20 minutes, then add 15 parts by mass of fluorine-containing acrylic resin and 15 parts by mass of PTFE emulsion, and then Stir for 20 minutes at 2000 rpm, add 0.3 parts by mass of polyether-modified silicone dispersant, and continue stirring for 20 minutes to obtain a superhydrophobic catalytic filter material solution. The solid content of the superhydrophobic catalyst in the superhydrophobic catalyst sol...

Embodiment 3

[0042] The filter material of the dust filter bag in this embodiment is polyimide. The catalyst for denitrification is a manganese-based catalyst, and the active component of the manganese-based catalyst is MnO 2 . The fluorocarbon surfactant is Dupont Capstone FS-61 fluorocarbon surfactant. The low surface energy substance is heptadecafluorodecyltriethoxysilane.

[0043] A preparation method of a biomimetic catalytic filter material, the preparation process is as follows:

[0044] (1) Pretreatment: Grind the manganese-based catalyst in a mortar and put it into a planetary ball mill at a speed of 150r / min, mill it for 6 hours, and grind it for later use. Ultrasonic cleaning with deionized water for 10 minutes, drying in an oven at 80°C for later use;

[0045] (2) Preparation of superhydrophobic catalyst solution: 4g 28wt.% ammonia water was added to 100g water, under the condition of rotating speed 200rpm, stirred at room temperature for 5min, then added 0.5g Dupont Capsto...

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Abstract

A bionic catalytic filter material and its preparation method and application belong to the technical field of environmental protection and catalysis. Firstly, the commercial vanadium-titanium catalyst or manganese-based catalyst is superhydrophobic modified with low surface energy substances to obtain a superhydrophobic catalyst solution. After rotary evaporation and freeze-drying, superhydrophobic catalyst particles are obtained, and then water-based acrylic resin and PTFE are added to the superhydrophobic catalyst solution. The resin is mechanically stirred and mixed evenly, combined with the dust filter bag by dipping and rolling, and the bionic catalytic filter material is obtained after high temperature curing. The biomimetic catalytic filter material prepared by the present invention has a gas and dust emission concentration lower than 10 mg / m under normal working conditions 3 , the running resistance is less than 1000Pa, the filtration efficiency is greater than 99.99%, the denitrification efficiency is greater than 90%, and the service life is greater than 4a, meeting the latest environmental protection requirements. It can realize the integrated removal of dust and nitrate in the flue gas, thereby reducing the space required for dust removal and denitrification equipment, reducing the flue gas treatment process, reducing costs, and improving the service life of the catalyst, so that SCR technology can be applied on a large scale.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and catalysis, and in particular relates to a bionic catalytic filter material and its preparation method and application. Background technique [0002] With the development of modern industry, environmental pollution is becoming more and more serious, especially the high-temperature waste gas emitted by boilers in cement and steel industries and coal-fired power plants, which seriously pollutes the ecological environment and damages human health. The country attaches great importance to air quality and reduces smoke. Air pollution to the environment is urgent. High-temperature waste smoke and dust mainly include sulfur-containing compounds, nitrogen-containing compounds and soot-like particles. Therefore, how to quickly and efficiently process industrial high-temperature flue gas has become a worldwide problem. [0003] At present, the commonly used method for treating high-tem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/56B01D46/02B01D39/16B01J23/34
CPCB01D39/16B01D46/02B01D53/8628B01D2258/0283B01J23/34Y02C20/30
Inventor 张友法杨永玲余新泉
Owner SOUTHEAST UNIV
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