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Preparation method for biomass anti-lyolysis desiccant

A desiccant and biomass technology, which is applied in the field of preparation of biomass anti-liquid hydrolysis desiccant, can solve the problems of reverse adsorption of moisture, affecting the use time of products, liquid hydrolysis phenomenon, etc., to achieve high regeneration, improve liquid hydrolysis problems, Good hygroscopic effect

Inactive Publication Date: 2016-03-02
丁玉琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is that the current common silica gel desiccant and calcium chloride desiccant will have moisture reverse adsorption phenomenon, which will affect the service life of the product, and the use of corn dregs husk derivatives alone as desiccant will cause liquefaction phenomenon Defects, providing a method of using polyacrylamide as a desiccant additive for desiccants of corn dregs husk derivatives to improve its liquefaction defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Weigh 500g of corn dregs left over from a starch factory, soak them in absolute ethanol at room temperature for 24 hours, then transfer them to a Buchner funnel, wash and filter them with deionized water for 3 times until the filtrate is clear, and put the filter residues in a vacuum dryer to dry. Standby; put the above-mentioned dried filter residue into a 2L beaker, add 1000mL of hydrochloric acid solution with a concentration of 3mol / L, place it on a magnetic stirrer, stir at a speed of 300r / min for 10min, then transfer it to a water bath, and heat up to 40°C. After hydrolysis for 1 hour, suction filter and dry; take 200 g of hydrolyzed corn dregs and pour them into a three-necked flask, add 50 g of monochloroacetic acid and 30 g of sodium hydroxide, mix well, and continue to pour 500 mL of ethanol solution with a mass concentration of 70%. Stir and react at a constant temperature at 60°C for 1 hour to obtain corn dregs derivatives; soak the derivatives obtained above...

example 2

[0020] Weigh 550g of corn dregs left over from a starch factory, soak them in absolute ethanol at room temperature for 30 hours, then transfer them to a Buchner funnel, wash them with deionized water and filter them 4 times until the filtrate is clear, put the filter residues in a vacuum dryer and dry them. Standby; put the above-mentioned dried filter residue into a 2L beaker, add 1100mL of hydrochloric acid solution with a concentration of 3mol / L, place it on a magnetic stirrer, stir at a speed of 350r / min for 15min, then transfer it to a water bath, and heat up to 45°C. After hydrolysis for 1 hour, suction filter and dry; take 250 g of hydrolyzed corn dregs and pour them into a three-necked flask, add 80 g of monochloroacetic acid and 35 g of sodium hydroxide, mix well, and continue to pour 550 mL of ethanol solution with a mass concentration of 70%. Stir and react at a constant temperature of 65°C for 1 hour to obtain a derivative product of corn dregs; soak the derivative ...

example 3

[0023] Weigh 600g of corn dregs left over from a starch factory, soak them in absolute ethanol at room temperature for 36 hours, then transfer them into a Buchner funnel, wash them with deionized water and filter them 5 times until the filtrate is clear, then put the filter residues in a vacuum dryer to dry. Standby; put the above-mentioned dried filter residue into a 2L beaker, add 1200mL of hydrochloric acid solution with a concentration of 3mol / L, place it on a magnetic stirrer, stir at a speed of 400r / min for 20min, then transfer it to a water bath, and heat up to 50°C. After hydrolysis for 2 hours, suction filter and dry; take 300g of hydrolyzed corn dregs and pour them into a three-necked flask, add 100g of monochloroacetic acid and 40g of sodium hydroxide, mix well and continue to pour 600mL of ethanol solution with a mass concentration of 70%. Stir and react at a constant temperature of 70°C for 2 hours to obtain a derivative product of corn dregs; soak the derivative p...

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Abstract

The present invention relates to a preparation method for a biomass anti-lyolysis desiccant, and belongs to the field of desiccant preparation. The method comprises the steps of taking corn husk residues as a raw material; obtaining a crude desiccant product through a series of modification; and preparing the crude desiccant product with polyacrylamide into the biomass anti-lyolysis desiccant through an aqueous solution polymerization method. The polyacrylamide contains a strongly hydrophilic amide group in a macromolecular chain, and is a three-dimensional network structure, so that a large amount of moisture can be absorbed and locked. Thus, the polyacrylamide can be compounded with the biomass desiccant for absorbing the moisture absorbed by the biomass desiccant, thereby effectively preventing lyolysis of the biomass desiccant and enabling the moisture absorption ratio of the compound desiccant to be significantly increased. The desiccant disclosed by the present invention not only keeps the characteristics of low price, high reproducibility and good moisture absorption property of a corn husk residue desiccant, but also effectively alleviates the lyolysis problem common to the desiccant.

Description

technical field [0001] The invention relates to a preparation method of a biomass anti-hydrolysis desiccant, which belongs to the field of dryer preparation. Background technique [0002] Use the desiccant to absorb the moisture in the bagged items, keep the items relatively dry for a long time, regulate the moisture conditions of microbial survival, chemical reactions, photolysis reactions and enzymatic reactions, so as to achieve moisture-proof, mildew-proof, insect-proof and rust-proof , anti-oxidation to prolong the shelf life of the product. [0003] The desiccants used in the past, such as silica gel desiccant, calcium chloride desiccant, etc., are mostly in the form of physical water absorption. When the moisture content in the article and the air is lower than the moisture content in the desiccant, the reverse adsorption phenomenon of moisture will occur, and the article will absorb the desiccant Medium moisture makes the product unable to be stored for a long time....

Claims

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Application Information

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IPC IPC(8): B01D53/28
Inventor 丁玉琴林大伟
Owner 丁玉琴
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