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Activated carbon-containing bentonite drying agent and preparation method thereof

A bentonite and desiccant technology, applied in the field of desiccant preparation, can solve the problems of poor adsorption force, insufficient viscosity, small specific surface area, etc., and achieve the effect of enhancing adsorption capacity, good hygroscopicity, and increasing specific surface area

Inactive Publication Date: 2017-09-01
句容康泰膨润土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, due to the small specific surface area and insufficient viscosity of bentonite, the adsorption force is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A bentonite desiccant containing activated carbon is prepared from the following raw materials in parts by weight: 40-45 parts of bentonite, 10-15 parts of quartz sand, 5-8 parts of activated carbon powder, 5-8 parts of anhydrous calcium chloride, 5-10 parts of sodium carbonate, 5-6 parts of sodium chloride, 1-1.5 parts of chitosan, 0.01-0.04 parts of sodium silicate.

[0024] A preparation method of a bentonite desiccant containing activated carbon, comprising:

[0025] S1. Dry the bentonite at 70°C and crush it to 300 mesh to obtain bentonite powder;

[0026] S2, adding the bentonite powder into the sodium chloride solution, treating for 5 hours, filtering, and drying at 70°C to obtain sodium-treated bentonite powder;

[0027] S3. Mix the sodium-treated bentonite powder with quartz sand, activated carbon powder, anhydrous calcium chloride, sodium carbonate, chitosan, and sodium silicate, dry at 70°C, and pulverize to 300 mesh to obtain the Activated carbon based ben...

Embodiment 2

[0030] A bentonite desiccant containing activated carbon is prepared from the following raw materials in parts by weight: 40-45 parts of bentonite, 10-15 parts of quartz sand, 5-8 parts of activated carbon powder, 5-8 parts of anhydrous calcium chloride, 5-10 parts of sodium carbonate, 5-6 parts of sodium chloride, 1-1.5 parts of chitosan, 0.01-0.04 parts of sodium silicate.

[0031] A preparation method of a bentonite desiccant containing activated carbon, comprising:

[0032] S1. Dry the bentonite at 90°C and crush it to 500 mesh to obtain bentonite powder;

[0033] S2, adding the bentonite powder into the sodium chloride solution, treating for 2 hours, filtering, and drying at 90°C to obtain sodium-treated bentonite powder;

[0034] S3. Mix the sodium-treated bentonite powder with quartz sand, activated carbon powder, anhydrous calcium chloride, sodium carbonate, chitosan, and sodium silicate, dry at 90°C, and pulverize to 500 mesh to obtain the Activated carbon based ben...

Embodiment 3

[0037] A bentonite desiccant containing activated carbon is prepared from the following raw materials in parts by weight: 45-55 parts of bentonite, 15-20 parts of quartz sand, 8-12 parts of activated carbon powder, 8-12 parts of anhydrous calcium chloride, 5-10 parts of sodium carbonate, 6-8 parts of sodium chloride, 1-1.5 parts of chitosan, 0.04-0.06 parts of sodium silicate.

[0038] A preparation method of a bentonite desiccant containing activated carbon, comprising:

[0039] S1. Dry the bentonite at 70°C and crush it to 300 mesh to obtain bentonite powder;

[0040] S2, adding the bentonite powder into the sodium chloride solution, treating for 5 hours, filtering, and drying at 70°C to obtain sodium-treated bentonite powder;

[0041] S3. Mix the sodium-treated bentonite powder with quartz sand, activated carbon powder, anhydrous calcium chloride, sodium carbonate, chitosan, and sodium silicate, dry at 70°C, and pulverize to 300 mesh to obtain the Activated carbon based b...

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PUM

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Abstract

The embodiment of the invention discloses an activated carbon-containing bentonite drying agent and a preparation method thereof and relates to the field of drying agents. The activated carbon-containing bentonite drying agent is prepared from the following raw materials in parts by weight: 40-60 parts of bentonite, 10-30 parts of quartz sands, 5-20 parts of activated carbon powder, 5-20 parts of a water-absorbing reinforcing agent, 5-20 parts of carbonate, 5-10 parts of sodium salt, 1-3 parts of viscose fibers and 0.01-0.1 part of silicate. By adopting the bentonite as a raw material, the activated carbon-containing bentonite drying agent is non-toxic and tasteless, does not have corrosion, is stable in chemical performance and does not pollute environment; and by adding the activated carbon powder, bentonite particles become porous, so that the specific surface area of the particles is increased, and the adsorption force of the particles is improved. The activated carbon-containing bentonite drying agent prepared by the invention can be recycled, is good in moisture absorption, low in cost and continuous in production process and can be produced in a large scale.

Description

technical field [0001] The invention relates to the field of desiccant preparation, in particular to a bentonite desiccant containing activated carbon and a preparation method thereof. Background technique [0002] A desiccant is a dehydrating agent that absorbs moisture from the atmosphere. It physically absorbs water molecules in its own structure or chemically absorbs water molecules and changes its chemical structure to become another substance. It is suitable for preventing moisture in instruments, meters, electrical equipment, medicines, food, textiles and other various packaging items. At present, silica gel desiccant, acid, alkaline desiccant and molecular sieve desiccant are widely used in the market. These desiccants have good water absorption effect, but the production raw materials are complex and the process is relatively complicated, and most of them cannot be recycled. [0003] Bentonite is a clay rock with montmorillonite as the main component, and its colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28
CPCB01D53/261B01D53/28B01D2253/25B01D2257/80
Inventor 刘新兵刘长淼刘玉林
Owner 句容康泰膨润土有限公司