Novel drying agent and preparation method thereof

A desiccant and a new type of technology, applied in the field of new desiccant and its preparation, can solve the problems of non-renewable use, complicated preparation process, limited use effect, etc., and achieve the effects of fast water absorption capacity, high repeated utilization rate, and fast water absorption efficiency.

Inactive Publication Date: 2017-07-07
安徽省明美矿物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silica gel desiccant is usually prepared by reacting sodium silicate and sulfuric acid, and undergoing a series of treatments such as aging and acid soaking. The raw materials are dangerous goods, and the process is relatively complicated.
[0004] There are also some acid and alkaline desiccants, which generally have relatively large water absorption capacity and relatively fast drying speed, but most of them cannot be recycled
[0005] Molecular sieve desiccant is also a kind of desiccant product that is artificially synthesized and has strong adsorption to water molecules. It is a crystalline aluminosilicate compound. There are regular and uniform pores in its crystal structure, and the pore diameter is on the order of molecular size. , but its preparation process is more complicated, and its use effect is also limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment relates to a new type of desiccant, including the following components by weight: 25 parts of minerals, 20 parts of silicon dioxide, 35 parts of iron powder, 15 parts of bamboo charcoal, 2 parts of sodium chloride, 10 parts of quartz sand, 5 parts of fiber share.

[0029] The mineral is montmorillonite.

[0030] A method for preparing the novel desiccant, comprising the steps of:

[0031] (1) First mix the minerals of the above formula with sodium chloride, put them into a ball mill and grind them into powder, then put them into the reaction kettle, add water while stirring, add water to soak until the minerals fully expand, the amount of water added is 15% of the weight of the minerals times, soak the minerals for 50 hours, and pass through a 150-mesh sieve to obtain purified minerals;

[0032] (2) Mix the purified mineral with the silica, bamboo charcoal, and quartz sand and put it into a ball mill to form a powder, then disperse it in a high-speed d...

Embodiment 2

[0038] This embodiment relates to a new type of desiccant, including the following components by weight: 50 parts of minerals, 30 parts of silicon dioxide, 40 parts of iron powder, 20 parts of bamboo charcoal, 5 parts of sodium chloride, 30 parts of quartz sand, 10 parts of fiber share.

[0039] The mineral is a mixture of bentonite and attapulgite.

[0040] A method for preparing the novel desiccant, comprising the steps of:

[0041] (1) First mix the above-mentioned mineral and sodium chloride, put it into a ball mill and grind it into powder, then put it into the reaction kettle, add water while stirring, add water to soak until the mineral is fully expanded, and the amount of water added is 20% of the weight of the mineral times, soak the minerals for 55 hours, and pass through a 200-mesh sieve to obtain purified minerals;

[0042] (2) Mix the purified mineral with the silica, bamboo charcoal, and quartz sand and put it into a ball mill to form a powder, and then dispers...

Embodiment 3

[0048] This embodiment relates to a new type of desiccant, including the following components by weight: 32 parts of minerals, 26 parts of silicon dioxide, 37.5 parts of iron powder, 16 parts of bamboo charcoal, 3 parts of sodium chloride, 12 parts of quartz sand, 8 parts of fiber share.

[0049] The mineral is a mixture of montmorillonite, bentonite and attapulgite.

[0050] A method for preparing the novel desiccant, comprising the steps of:

[0051](1) First mix the minerals of the above formula with sodium chloride, put them into a ball mill and grind them into powder, then put them into the reaction kettle, add water while stirring, add water to soak until the minerals fully expand, which is 18 times the weight of the minerals, Soak the minerals for 65 hours, and pass through a 200-mesh sieve to obtain purified minerals;

[0052] (2) Mix the purified mineral with the silica, bamboo charcoal, and quartz sand and put it into a ball mill to form a powder, then disperse it ...

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Abstract

The invention discloses a novel drying agent and a preparation method thereof. The novel drying agent comprises the following components in parts by weight: 25-50 parts of minerals, 20-30 parts of silicon dioxide, 35-40 parts of iron powder, 15-20 parts of bamboo charcoal, 2-5 parts of sodium chloride, 10-30 parts of quartz sand and 5-10 parts of fiber. The novel drying agent is prepared by sequentially soaking, sieving, mixing, grinding, concentrating, drying and adding the iron powder and the fiber. The preparation method is simple in process, has low demands on equipment, and is suitable for large-scale industrial production, and the obtained drying agent has deoxygenation and drying functions and is high in cation exchange capacity, significant in deoxygenation and drying effects and high in repeated utilization rate.

Description

technical field [0001] The invention belongs to the field of desiccants, and in particular relates to a novel desiccant 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. [0003] At present, silica gel desiccant is widely used in the market, such as a silica gel desiccant disclosed in the invention patent of CN104174373A. According to the percentage by weight, silica gel: 50-70%, aluminum oxide: 12-15%, three Ferric oxide: 8-10%, calcium chloride: 5-8%, magnesium sulfate: 3-6%, carboxymethyl cellulose: 8-15%, essence: 0.7-1.0%, and then the selected silica gel , aluminum oxide, fer...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01D53/28
CPCB01J20/26B01D53/28B01D2257/80B01J20/046B01J20/103B01J20/12B01J20/28016
Inventor 扈卫珍周慧堂刘玉梅石娟
Owner 安徽省明美矿物化工有限公司
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