Carbon monoxide filtering material and application thereof

A filter material, carbon monoxide technology, applied in other chemical processes, cation exchange materials, chemical/physical processes, etc., to achieve the effect of improving efficiency, high corrosion resistance and oxidation resistance, and increasing active points

Inactive Publication Date: 2014-12-24
赵世怀 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention patent application with the publication number CN1836779A discloses a porous composite material with micron-scale particles of organic polymer microfiber structured functional materials, and the invention patent application with the publication number CN1762909A discloses an oxide microfiber structured micron However, the organic polymer microfibers or glass and quartz microfiber filter materials used in these two patent applications can only be used below 300°C

Method used

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  • Carbon monoxide filtering material and application thereof
  • Carbon monoxide filtering material and application thereof
  • Carbon monoxide filtering material and application thereof

Examples

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Embodiment 1

[0039] A preparation method of carbon monoxide filter material, comprising the following steps:

[0040] The first step: adding the micron-scale particle precursor to water and ethanol solution, followed by adding nitric acid, and then vigorously stirring the resulting solution at 40°C for 30 minutes; the micron-scale particle precursor: water: ethanol solvent: nitric acid molar ratio It is 1:12:45:0.26; through hydrolysis, concentration, aging, drying, calcination, grinding, the particle size is 150-200um micron-scale SiO 2 particles; the micron-scale particles are tetraethoxysilane (Si(OC 2 h 5 ) 4 );

[0041] The second step: get 1g of filler and add it to 1000g of water, stir evenly, then add 3g of microfiber and 5g of the micron-scale Si0 obtained in the first step 2 The particles are added to the above liquid in turn, and stirred into a uniform slurry. The weight ratio of filler: microfiber: micron-scale particles: water is 1:3:5:1000; the filler is 10-15um in diameter...

Embodiment 2

[0048] A kind of preparation method of carbon monoxide filter material, all the other are identical with embodiment 1 except that the first step is different.

[0049] The first step of the preparation method is as follows: add the precursor of the micron-scale particles into the water drop by drop, and keep stirring, add a small amount of additives to the reaction mixture, so that the color of the solution changes from dark to bright. Stir vigorously for 30 minutes until the solution turns light in color. When the reaction temperature reaches about 90 degrees, reflux for 12-14 hours; keep the solution temperature below 60 degrees, keep stirring, and gradually convert into gel after standing, and obtain a particle size of 100-150μm micron scale Al 2 o 3 Particles; micron-scale particles The molar ratio of precursor: water: additive is 1:100:4. The precursor of micron-scale particles is aluminum sec-butoxide (Al(C 4 h 9 O) 3 ), the auxiliary agent is nitric acid.

[0050...

Embodiment 3

[0052] The first step does not exist.

[0053] In the second step, the micron-scale particles are Al from Alfa Aisha (Tianjin) Chemical Co., Ltd.) 2 o 3 Particles with a particle size of 110 μm.

[0054] The material prepared by the above method is marked as C.

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Abstract

The invention belongs to the technical field of filtering materials, and particularly relates to a filtering material for removing carbon monoxide. The filtering material comprises microfibers, micron-scale particles and a nano-catalyst, wherein the joint points of the microfibers and the micron-scale particles are sintered together to form a porous composite material of a three-dimensional mesh structure; and by taking the micron-scale particles as a carrier, and the nano-catalyst is evenly bound in the porous composite material. The carbon monoxide filtering material is wide in application range, can be used in room-temperature and high-temperature environments, and has a nano-scale pore structure; the adsorption surface area and the adsorption capacity of the nano-catalyst are expanded, the contact area between a reactant and the catalyst is expanded, the mass transfer efficiency and the heat transfer efficiency of a reactant and catalyst adsorption process, and a product and catalyst desorption process are improved, and the reaction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of filter materials, in particular to a loaded catalyst filter material for removing carbon monoxide. Background technique [0002] CO is a flammable and explosive gaseous pollutant. Exhaust gas from incomplete combustion of hydrocarbons, gas in mines, and exhaust gas from household gas stoves all contain a large amount of carbon monoxide. When the CO content in the air is 2.0*10-5mol / L, people will experience dizziness and vomiting within two hours; when the content reaches 1.2%, it will cause death within 1-3 minutes. Under normal conditions, CO oxidation requires high temperature, high energy consumption, and explosion accidents. [0003] Air pollutants in heavy industry are mainly characterized by high-temperature flue gas. As a rule of controlling the total amount, the state has successively revised the emission values ​​of various boilers and kilns in the industrial field to strictly reduce emissions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J20/10B01J20/08B01J20/28B01J39/20B01D53/86B01D53/62
CPCY02A50/20
Inventor 赵世怀赵晓明
Owner 赵世怀
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