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A kind of carbon monoxide filter material and its application

A carbon monoxide and filter material technology, applied in the field of filter materials, to achieve the effects of high corrosion resistance and oxidation resistance, increasing active points, expanding adsorption surface area and adsorption capacity

Inactive Publication Date: 2016-08-24
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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  • A kind of carbon monoxide filter material and its application
  • A kind of carbon monoxide filter material and its application
  • A kind of carbon monoxide filter material and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0040] Step 1: Add the micron-scale particle precursor to the water and ethanol solution, then add nitric acid, and then vigorously stir the resulting solution at 40°C for 30 minutes; the molar ratio of the micron-scale particle precursor: water: ethanol solvent: nitric acid 1:12:45:0.26; through hydrolysis, concentration, aging, drying, calcination, and grinding, micron-scale Si0 with a particle size of 150-200um is obtained 2 Particles; the micron-scale particles are tetraethoxysilane (Si(OC 2 H 5 ) 4 );

[0041] Step 2: Take 1g of filler and add it to 1000g of water, mix it evenly, then mix 3g of microfibers and 5g of micron-scale Si0 obtained in the first step 2 The particles are sequentially added to the above liquid and stirred into a uniform slurry. The weight ratio of filler: microfiber: micron particle: water is 1:3:5:1000; the filler is 10-15um in diameter and 2-3mm in length Wa...

Embodiment 2

[0048] A preparation method of carbon monoxide filter material is the same as that of Example 1 except that the first step is different.

[0049] The first step of the preparation method is as follows: the micron-scale particle precursor is added dropwise to the water and continuously stirred, and a small amount of auxiliary agent is added to the reaction mixture to make the color of the solution change from dark to bright. Stir vigorously for 30 minutes until the color of the solution turns bright. When the reaction temperature reaches about 90 degrees, reflux for 12-14 hours; keep the temperature of the solution below 60 degrees, keep stirring, and gradually transform into gel after standing still, through aging, drying, calcination, and grinding, the particle size is 100-150μm micron scale Al 2 O 3 Particles; the molar ratio of micron-scale particle precursor: water: additives is 1:100:4. The micron-scale particle precursor is aluminum sec-butoxide (Al(C 4 H 9 O) 3 ), the aux...

Embodiment 3

[0052] The first step does not exist.

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

[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, and particularly relates to a supported catalyst filter material for removing carbon monoxide. Background technique [0002] CO is a flammable and explosive gas pollutant. Emissions from incomplete combustion of hydrocarbons, gas from mines, and emissions from household gas stoves all contain large amounts 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%, people will die within 1-3 minutes. Under normal conditions, CO oxidation removal requires high temperature, high energy consumption, and explosion accidents may occur. [0003] Heavy industry air pollutants are mainly characterized by high-temperature flue gas. As a total control rule, the state has successively revised the emission values ​​established by various boilers and furnaces in the industrial field, strictly requiring ...

Claims

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Application Information

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Patent Type & Authority Patents(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