Extraction method of tobacco cellulose based on ferric chloride pretreatment
A pretreatment and cellulose technology, which is applied in the field of extracting cellulose and hemicellulose, can solve the problems of complex spatial structure crystallinity and hinder the industrial application of cellulose, and achieve the effect of low cost, low energy consumption and improved dissolution rate
Inactive Publication Date: 2011-12-07
CHONGQING HENGYUAN JINTONG TECH
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AI Technical Summary
Problems solved by technology
However, due to its complex spatial structure and dense crystallinity, the industrial application of cellulose is seriously hindered.
Method used
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Embodiment 1
[0036] Embodiment 1 Preparation of Tobacco Pretreatment Liquid
[0037] The tobacco is reacted with a ferric chloride solution with a concentration of 0.2 mol / L at a temperature of 120° C. for 40 minutes to obtain a tobacco pretreatment liquid.
Embodiment 2
[0038] The preparation of embodiment 2 tobacco pretreatment liquid
[0039] The tobacco material is reacted with ferric chloride solution with a concentration of 0.6 mol / L at a temperature of 140° C. for 20 minutes to obtain a tobacco pretreatment liquid.
Embodiment 3
[0040] The preparation of embodiment 3 tobacco pretreatment liquid
[0041] The tobacco material is reacted with a ferric chloride solution with a concentration of 0.4 mol / L at a temperature of 130° C. for 30 minutes to obtain a tobacco pretreatment liquid.
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Abstract
The invention relates to a process for extracting cellulose from tobacco, specifically: a tobacco pretreatment method, which involves reacting the tobacco material with a ferric chloride solution with a concentration of 0.2-0.6 mol / L at a temperature of 120-140°C. In 20 minutes, the tobacco pretreatment liquid was obtained, washed to neutrality, filtered, and dried to obtain a neutral tobacco pretreatment material, adding 1-butyl-3-methylimidazolium chloride salt equivalent to 10-15 times the quality of tobacco, Carry out sufficient dissolution reaction at 80-100°C to obtain a reaction solution, conduct solid-liquid separation, take the liquid, the liquid is a cellulose solution, add an aqueous medium, stir for not less than 30 minutes, and then filter, and the obtained filter residue is Cellulose; or filter the tobacco pretreatment liquid to obtain a filtrate, adjust the pH value of the filtrate to 3.0-5.0, generate solid precipitation, and carry out liquid-solid separation, and the solid precipitation is hemicellulose; the present invention has low cost, High yield, green and environmental protection.
Description
technical field [0001] The invention relates to the field of chemical industry, in particular to a process for extracting cellulose and hemicellulose from plants. Background technique [0002] my country's tobacco planting area is large and the output is high, but the tobacco planting industry currently mainly uses high-quality tobacco leaves for cigarettes, and more than 10 times the tobacco stems, tobacco sticks and tobacco powder are stacked or burned as waste, which not only causes waste of resources, but also It has caused environmental pollution and has become one of the problems affecting the development of the tobacco industry. 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, fermentation to p...
Claims
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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