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Method for producing carboxymethyl cellulose by using side products of processing yellow gingers with catalysis-solvent method

A technology of carboxymethyl cellulose and by-products, which is applied in the field of production of carboxymethyl cellulose by the catalytic-solvent method of ginger processing by-products, can solve problems such as expensive, unreported, and limited source of raw materials, and achieve production costs low, protect the ecological environment, and realize the effect of resource regeneration

Inactive Publication Date: 2009-09-23
北京盖雅技术中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sources of these raw materials are limited and expensive
[0003] The method that the present invention produces CMC with catalysis-solvent method turmeric processing by-product has not yet been reported both at home and abroad

Method used

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  • Method for producing carboxymethyl cellulose by using side products of processing yellow gingers with catalysis-solvent method
  • Method for producing carboxymethyl cellulose by using side products of processing yellow gingers with catalysis-solvent method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Take 8.3g of dry material of catalysis-solvent process turmeric processing by-products, add 100mL of sodium hydroxide solution with a mass concentration of 18%, stir continuously at room temperature for 45min, filter alkali cellulose with a filter press, and reuse the filtered alkali liquor; Add alkali fiber into the reaction bottle, add 120mL of ethanol with a mass concentration of 95% and stir well, then add a solution of 8.9g of monochloroacetic acid and 30mL of ethanol with a mass concentration of 95%, and react at 40°C for 1 hour , heated up to 75°C and reacted for 3 hours; adjusted the pH value to neutral with dilute hydrochloric acid; washed twice with ethanol with a mass concentration of 75%, and washed once with ethanol with a mass concentration of 95%; dried the product, and the waste ethanol solution was distilled back to use; finally the product is dried and pulverized.

Embodiment 2

[0024] Get 1Kg of the catalytic-solvent process yellow ginger processing by-product dry material through sulfuric acid pretreatment, add 12L mass concentration and be 20% sodium hydroxide solution, stir continuously at room temperature for 45min, press filter alkali cellulose with a filter press, and the alkali Liquid reuse; Add alkali fiber into the reaction kettle, add 15L of ethanol with a mass concentration of 95% and stir well, then add 14Kg of monochloroacetic acid and 4L of ethanol with a mass concentration of 95%, and mix it at 40°C React for 1.5 hours, raise the temperature to 75°C and react for 3.5 hours; adjust the pH value to neutral with dilute hydrochloric acid; wash twice with ethanol with a mass concentration of 75%, and wash once with ethanol with a mass concentration of 95%; spin dry the product, waste ethanol solution It is reused by distillation; finally, the product is dried and pulverized.

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Abstract

The invention provides a method for producing carboxymethyl cellulose by using side products of processing yellow gingers with a catalysis-solvent method. The method comprises the following steps of: alkalifying raw materials, filter pressing, etherification, neutralization, alcohol washing, spin-drying, drying and grinding with the water content of the used side products of processing yellow ginger being 5 to 10 percent (mass fraction). The raw materials are from wastes in the processing of yellow gingers with the catalysis-solvent method, is large in quantity and is available and has low production cost; the technique steps are simple and do not generate secondary pollution; the method not only changes the wastes into valuables, realizes resource regeneration, but also protects ecological environment, solves the big problem of the process of processing yellow gingers and is a new technology with environmental, economic and social benefits.

Description

Technical field: [0001] The invention relates to a production method of carboxymethyl cellulose, in particular to a method for producing carboxymethyl cellulose by using the by-product of catalysis-solvent method turmeric processing. technical background: [0002] Carboxymethyl cellulose is usually chemically processed from natural cellulose such as cotton, sorghum stalks, bagasse, corn stalks, reed stalks and other plants with high cellulose content. But the sources of these raw materials are limited and expensive. [0003] The method that the present invention uses catalysis-solvent method yellow ginger processing by-product to produce CMC has not been reported both at home and abroad. [0004] Catalytic-solvent method turmeric processing by-product is the residue after extracting saponin from turmeric, which mainly contains fiber and a small amount of starch. The production of 1 ton of saponin produces about 100 tons of residue. These untreated residues not only occupy a...

Claims

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Application Information

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IPC IPC(8): C08B11/12
Inventor 吴绍祖何霄嘉吴广安周国辉付东康刘美王玉枝
Owner 北京盖雅技术中心有限公司
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