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Gas adsorbing material and preparation method thereof

A gas adsorption and slurry technology, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of easy desorption of harmful substances, unsuitable indoor environment, waste and other problems

Inactive Publication Date: 2019-04-23
SHANDONG OBO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, simple activated carbon adsorption is physical adsorption, and the adsorbed harmful substances are easy to desorb.
At present, in order to improve the ability of activated carbon to purify the air, some researches use catalysts to modify activated carbon to achieve air purification, but most of the catalysts are heavy metals or precious metals, which are easy to cause secondary pollution or waste; most catalysts also need ultraviolet radiation to work, which is not suitable for indoor environment

Method used

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  • Gas adsorbing material and preparation method thereof
  • Gas adsorbing material and preparation method thereof

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preparation example Construction

[0070] The present invention also provides a method for preparing a gas adsorption material, comprising the following steps:

[0071] A) After mixing the graphene aqueous solution, the binder and the solidified binder, a slurry is obtained;

[0072] B) After kneading the slurry obtained in the above steps, activated carbon and expansion agent, a mixture is obtained;

[0073] C) Granulating the mixture obtained in the above steps to obtain a gas adsorption material.

[0074] In the above-mentioned preparation method of the present invention, the selection and ratio of the materials and their preferred ranges are consistent with the selection and ratio of the materials in the aforementioned gas adsorption materials and their preferred ranges, and will not be repeated here.

[0075] In the present invention, the slurry is obtained by firstly mixing the graphene aqueous solution, the binder and the solidified binder.

[0076] The present invention has no special limitation to th...

Embodiment 1

[0126] Graphene aqueous solution dispersion: put 110 parts of graphene aqueous solution in an ultrasonic disperser, and ultrasonically disperse 40mim.

[0127] Adhesive preparation: 6 parts of adhesive (CMC) and 7 parts of cured adhesive (acrylic acid) were added to the dispersed graphene aqueous solution, and stirred at a high speed to make the raw materials evenly dispersed to obtain a slurry.

[0128] Material kneading: 81 parts of activated carbon and 5 parts of expansion agent (potassium bicarbonate, calculated in terms of bicarbonate) are added to the kneader, 91% of the binder is added, and kneaded at a high speed until the activated carbon powder disappears, becoming Particles with a particle size of 1-5 mm; then add 5% of the binder and knead at a high speed until the particle size of the material is 10-15 mm; finally add the remaining binder and knead at a high speed until the material forms a large mass material.

[0129] see figure 1 , figure 1 It is a photograp...

Embodiment 2

[0138] Graphene aqueous solution dispersion: put 150 parts of graphene aqueous solution in an ultrasonic disperser, and ultrasonically disperse 40mim.

[0139] Adhesive preparation: 5 parts of adhesive (CMC) and 8 parts of cured adhesive (acrylic acid) were added to the dispersed graphene aqueous solution, and stirred at a high speed to make the raw materials evenly dispersed to obtain a slurry.

[0140] Material kneading: Add 80 parts of activated carbon to the kneader, add 4 parts of expansion agent (sodium bicarbonate, calculated as bicarbonate), mix for 30 minutes; add 92% of the binder, and knead at high speed until the activated carbon powder Disappear and become particles with a particle size of 1-5mm; then add 5% of the binder and knead at a high speed until the particle size of the material is 10-15mm; finally add the remaining binder and knead at a high speed until the material becomes a larger mass blocks to obtain a mixture.

[0141] Granulation: Put the kneaded m...

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Abstract

The present invention provides a gas adsorbing material, which is prepared from the following materials by weight: 90-260 parts of a graphene aqueous solution and 79-81 parts of active carbon. According to the present invention, the graphene aqueous solution is mixed with active carbon, such that the adsorption capacity of the active carbon to toxic substances is enhanced, and particularly the active carbon has strong adsorption capacity to benzene and dust; by directly adopting the graphene aqueous solution as the raw material, such that the quality of the graphene can be ensured, and the production can be simplified; the graphene / active carbon gas adsorbing material for air purification has obviously-enhanced adsorption capacity compared with pure granular active carbon; and the preparedproduct and the preparation method are environmentally friendly, the process is simple, and the method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of gas adsorption materials, and relates to a gas adsorption material and a preparation method thereof, in particular to a granular graphene / activated carbon gas adsorption material and a preparation method thereof. Background technique [0002] Adsorbent, also known as absorbent, can make active ingredients adhere to the surface of its particles, and turn liquid trace compound additives into solid compounds, which is conducive to uniform mixing. solid matter. Adsorbents generally have the following characteristics: large specific surface, suitable pore structure and surface structure; strong adsorption capacity for adsorbate; generally do not chemically react with adsorbate and medium; easy to manufacture and easy to regenerate; excellent Adsorptive and mechanical properties. [0003] Adsorbents can be classified according to pore size, particle shape, chemical composition, surface polarity, etc., such as...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01D53/02B01D2257/7022B01D2257/7027B01J20/20
Inventor 赵永彬张在忠程金杰
Owner SHANDONG OBO NEW MATERIAL CO LTD
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