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Drying agent and preparation method

A desiccant and material technology, applied in the field of desiccant, to achieve the effect of easy method, low cost and convenient operation

Active Publication Date: 2012-05-30
WUHAN LICHENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The moisture absorption rate of silica gel is low. According to the national standard of silica gel desiccant (GB10455-89), its moisture absorption rate is 30% (T=25°C, RH=80%); alkaline waste liquid will be produced in the production of silica gel, It is easy to pollute the environment; in addition, the cobalt chloride (commonly known as blue glue) added to the silica gel for color change has been listed as a second-class carcinogen, which will cause harm to production and the health of users, and is not conducive to environmental protection; color shape They are all beautiful and easy to be eaten by children or as condiments
Quicklime desiccant has disadvantages such as powdering after moisture absorption and non-recyclability; if this kind of desiccant is eaten by mistake, it will burn the mouth or esophagus because calcium oxide will release heat in the process of turning into calcium hydroxide when it meets water; Calcium is alkaline and corrosive to the oropharynx and esophagus. If it splashes into the eyes, it will cause damage to the conjunctiva and cornea, which limits its application in food, medical and health food

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 28

[0025] Embodiment 28: it is made by the raw material of following weight ratio:

[0026] Formulation: Polyacrylic acid 10%

[0027] Calcium Chloride 70%

[0028] Tapioca Starch 20%

[0029] Preparation method: mix the three substances evenly according to the above proportions, take 20g and wrap it in non-woven wrapping paper, put it into a seaweed product with a built-in humidity display card, and seal it. Put it in an environment with T=25°C and RH=90%, and after 200 days, the humidity display card shows that the humidity inside the bag is RH<10%.

[0030] Above 28 embodiments, its preparation steps are as follows:

[0031] Mix water-absorbent materials, deliquescent substances and plant polysaccharides in a stirring mixer evenly, and then introduce them into packaging bags for packaging; or mix water-absorbing materials, deliquescent substances and plant polysaccharides in a stirring mixer Uniform, then granulated or compressed into tablets, and packaged; or the water-ab...

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Abstract

A drying agent with wide application range is prepared from hydroscopic material, the deliquescent substance and vegetative polyose through pre-treating, mixing, and tabletting or granulating.

Description

technical field [0001] The invention relates to a desiccant, which is widely used in moisture-proof drying of food; medicine; optical electronics, precision instruments, meters; seeds, processed food, tea; clothing, footwear, leather, cultural relics, arts and crafts and other items. Simultaneously also relate to the preparation method of desiccant Background technique [0002] The currently used desiccants are mainly made of silica gel and quicklime as raw materials. The moisture absorption rate of silica gel is low. According to the national standard of silica gel desiccant (GB10455-89), its moisture absorption rate is 30% (T=25°C, RH=80%); alkaline waste liquid will be produced in the production of silica gel, It is easy to pollute the environment; in addition, the cobalt chloride (commonly known as blue glue) added to the silica gel for color change has been listed as a second-class carcinogen, which will cause harm to production and the health of users, and is not con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01D53/28
Inventor 姜发堂
Owner WUHAN LICHENG BIOTECH
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