Method for extracting cellulose from tobacco

A technology of cellulose and cellulose solution, which is applied in the fields of tobacco, tobacco processing, food science, etc., can solve the problems of complex spatial structure crystallinity and hinder the industrial application of cellulose, and achieve low cost, low pollution, and improved dissolution efficiency Effect

Active Publication Date: 2012-01-04
CHONGQING HENGYUAN JINTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its complex spatial structure and dense crystal...

Method used

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  • Method for extracting cellulose from tobacco
  • Method for extracting cellulose from tobacco
  • Method for extracting cellulose from tobacco

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Take 100g of tobacco with a particle size of 20 meshes, add 1-butyl-3-methylimidazolium chloride salt equivalent to 10 times the mass of tobacco, and carry out a dissolution reaction at 100°C for 4 hours to obtain a reaction solution. Liquid is carried out solid-liquid separation, gets liquid, and described liquid is cellulose solution; Add the deionized water that volume is 3 times in gained cellulose solution, filter after stirring for 30 minutes, gained filter residue is cellulose, and cellulose quality is 9.6g, the cellulose yield is 43.63%.

Embodiment 2

[0025] Accurately weigh 170 g of NaOH and dissolve it in 510 mL of distilled water to prepare a NaOH solution with a mass concentration of 25%. Weigh 120g of tobacco with a particle size of 20 mesh and put it into a three-necked bottle, then add 500mL of NaOH solution with a mass concentration of 25%, and stir it mechanically for 1 hour. After the reaction, wash and filter with distilled water until the filtrate is neutral. The filter residue was vacuum-dried at 70°C for later use. Take 100g of tobacco with a particle size of 20 meshes, add 1-butyl-3-methylimidazolium chloride salt equivalent to 10 times the mass of tobacco, and carry out a dissolution reaction at 100°C for 4 hours to obtain a reaction solution. Liquid is carried out solid-liquid separation, gets liquid, and described liquid is cellulose solution; Add the deionized water that volume is 5 times in gained cellulose solution, filter after stirring for 30 minutes, gained filter residue is cellulose, and cellulose ...

Embodiment 3

[0027] Weigh 120g of tobacco with a particle size of 20 mesh and put it into a three-neck bottle, then add 500mL of hydrochloric acid solution with a mass concentration of 10%, and stir it mechanically for 1.5h. After the reaction, wash and filter with distilled water until the filtrate is neutral. . The filter residue was vacuum-dried at 70°C for later use. Take 100g of tobacco with a particle size of 20 meshes, add 1-butyl-3-methylimidazolium chloride salt equivalent to 10 times the mass of tobacco, and carry out a dissolution reaction at 100°C for 4 hours to obtain a reaction solution. Liquid is carried out solid-liquid separation, gets liquid, and described liquid is cellulose solution; Add the deionized water that volume is 3 times in gained cellulose solution, filter after stirring for 30 minutes, gained filter residue is cellulose, and cellulose quality is 19.5g, which is 45.01% higher than the untreated raw cellulose, and the cellulose yield is 88.64%.

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Abstract

The invention relates to the field of chemical industry and particularly relates to a process for extracting cellulose from vegetable. The method specifically comprises the following steps of: adding 1-butyl-3-methylimidazolium chloride in an amount which is 10 to 15 times mass of tobacco into tobacco, performing full dissolution reaction at the temperature of between 80 and 110 DEG C to obtain reaction liquor, performing solid-liquid separation on the reaction liquor to obtain liquor, namely a cellulose solution; and adding deionized water in an amount which is 3 to 5 times volume of the cellulose solution, and stirring for more than or equal to 30 minutes and then filtering to obtain filter residues, namely cellulose. Compared with the conventional method for performing activating treatment on tobacco cellulose by using acid and alkali, the process has the advantages that: due to the steam explosion pretreatment, the effects of low consumption, low pollution and high efficiency are achieved, and production cost can be obviously reduced; and compared with a method for dissolving cellulose by using ionic liquid only, the method for activating tobacco cellulose by steam explosion first and then dissolving cellulose by using ionic liquid has the advantage that the dissolving efficiency is improved by about 60 percent.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a process for extracting cellulose from plants. Background technique [0002] my country has a large area of ​​tobacco planting and high output, but the income of tobacco planting industry is relatively low. At present, high-quality tobacco leaves are mainly used for cigarettes, and more than 10 times the tobacco stems, tobacco sticks and tobacco dust are piled up or burned as waste, which not only causes waste of resources, but also causes environmental pollution, which has become one of the problems affecting the development of the tobacco industry. one. If the "resource" utilization of tobacco waste can not only turn waste into treasure, but also increase the income of the national economy and promote the healthy development of my country's "two tobacco" industries. [0003] Tobacco is rich in cellulose. Cellulose can be widely used in industries such as textiles, medicine,...

Claims

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Application Information

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IPC IPC(8): D21C5/02D21B1/36
CPCA24B15/24A24B15/245
Inventor 王远亮陈奎曾国明张健荣魏小娅钟杨虞轶然范志歆
Owner CHONGQING HENGYUAN JINTONG TECH
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