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Method for producing saccharide by using biomass

A technology for biomass and biomass raw materials, applied in fermentation and other directions, can solve the problems of high energy consumption, high reaction temperature, troublesome operation, etc., and achieve the effects of high yield, lower surface tension, and lower dosage.

Active Publication Date: 2012-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method does not need to use acid, the reaction temperature is relatively high, and it needs to be pressurized, which not only requires high energy consumption, but also requires equipment. In addition, this method requires solid-liquid separation and is troublesome to operate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix crushed and sieved corn stalk particles (20-60 mesh), mass fraction 0.2% tin chloride, mass fraction 0.4% soil temperature 80, wherein the mass concentration of straw particles is 10%, heat up to 180°C, and react for 10 minutes, and then the temperature was lowered to terminate the reaction. After the reaction mixture is cooled, adjust the pH value of the solid-liquid mixture to 5.0, and hydrolyze it at 50°C for 96 hours. The dosage of cellulase is 30 FPU / gram of cellulose to obtain a hydrolyzate containing glucose and xylose, which can be used to ferment ethanol . The concentration of xylose in the hydrolyzate is 1.5%, the concentration of glucose is 2.7%, the yield of xylose is 60.8%, and the yield of glucose is 64.7%.

Embodiment 2

[0021] Mix crushed and sieved corn stalk particles (20-60 mesh), mass fraction 0.5% tin chloride, mass fraction 1% soil temperature 80, wherein the mass concentration of straw particles is 10%, heat up to 160°C, and react for 10 minutes, and then the temperature was lowered to terminate the reaction. After the reaction mixture is cooled, adjust the pH value of the solid-liquid mixture to 5.0, and hydrolyze it at 50°C for 72 hours. The dosage of cellulase is 20 FPU / gram of cellulose to obtain a hydrolyzate containing glucose and xylose, which can be used to ferment ethanol . The concentration of xylose in the hydrolyzate is 1.6%, the concentration of glucose is 2.6%, the yield of xylose is 63.2%, and the yield of glucose is 62.8%.

Embodiment 3

[0023] Mix crushed and sieved corn stalk particles (20-60 mesh), mass fraction 0.5% tin chloride, mass fraction 1% soil temperature 80, wherein the mass concentration of straw particles is 10%, heat up to 140°C, and react for 20 minutes, and then the temperature was lowered to terminate the reaction. After the reaction mixture is cooled, adjust the pH value of the solid-liquid mixture to 4.5, and hydrolyze it at 40°C for 72 hours. The amount of cellulase used is 20 FPU / gram of cellulose to obtain a hydrolyzate containing glucose and xylose, which can be used to ferment ethanol . The concentration of xylose in the hydrolyzate is 1.7%, the concentration of glucose is 2.5%, the yield of xylose is 68.6%, and the yield of glucose is 60%.

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Abstract

The invention discloses a method for producing saccharide by using biomass. The method comprises the following steps of: reacting raw material size consisting of a biomass raw material, inorganic metal salt, and surfactant at the temperature of between 120 and 180 DEG C for 5 to 30 minutes, and performing enzyme hydrolysis on a solid-liquid mixture which is not separated after reaction to obtain hydrolyzate containing saccharide. The method is short in an operation process, low in energy consumption, and high in biomass utilization rate and a saccharification effect is good.

Description

technical field [0001] The invention relates to a method for preparing sugar from biomass. Background technique [0002] Lignocellulosic substances are the most widely available biological materials in the world, and the production of biofuels from lignocellulosic substances is an effective way to solve the fuel shortage in the future. The production of ethanol from lignocellulose at home and abroad generally adopts a relatively mature process of first hydrolyzing the cellulose material and then fermenting it. Among them, the hydrolysis of lignocellulosic biomass into sugars is the key to the production of ethanol and conversion of other high value-added products. At present, the main ways of cellulose hydrolysis are enzymatic hydrolysis and acid hydrolysis. Compared with acid hydrolysis, enzymatic hydrolysis has the advantages of single product and high concentration of sugar solution, and is currently the main method of hydrolysis. [0003] Due to the complex structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/02
Inventor 王鑫黎元生乔凯
Owner CHINA PETROLEUM & CHEM CORP
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