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Low-crystallization fiber extraction and sugar making technology

A low crystallization and fiber technology, applied in the production of sugar, sugar production, glucose production, etc., can solve the problems of consumption and increase the cost of sugar production, achieve simple equipment operation, reduce the cost of enzymatic hydrolysis, and improve the utilization rate. Effect

Active Publication Date: 2019-04-23
江苏集萃工业生物技术研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing method, after lignocellulose is pulped, it is directly or roughly screened, so that the low-crystalline fiber contains a large amount of crystalline fiber, and a large amount of cellulase will be consumed in the subsequent enzymatic hydrolysis process, which increases the sugar production process. the cost of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1): pulping

[0026] Cut the wheat straw to a length of about 5cm and wash it with water to prepare the material. Put the prepared material into the steaming ball, add lye, and steam into the steaming ball. The wheat straw is cooked in alkali for 30 minutes under saturated steam at 140°C, and the pressure is released to cool down. Take out the material, mix it into 5% pulp and put it into a disc mill for grinding to obtain wheat straw pulp.

[0027] (2): Screening

[0028] Make the pretreated wheat straw pulp into a pulp concentration of 3%, put it into an over-frequency vibrating screen, the mesh number of which is 50 mesh, and the frequency is 20000HZ, collect the low-crystallization fiber solution passing through the screen, and put it aside to make the fiber spontaneously After settling for 30 minutes, the supernatant liquid was pumped away, and the low crystallization fiber solution at the bottom was separated into solid and liquid to obtain a low crystallization...

Embodiment 2

[0032] (1): pulping

[0033] Cut the rice straw to a length of about 5cm and wash it with water to prepare the material. Put the prepared material into the steaming ball, add lye, and steam into the steaming ball. The wheat straw is cooked in alkali for 30 minutes under saturated steam at 120°C, and the pressure is released to cool down. Take out the material, mix it into a 5% pulp and put it into a disc mill for grinding to obtain straw pulp.

[0034] (2): Screening

[0035] Make the pretreated wheat straw pulp into a pulp concentration of 3%, put it into an over-frequency vibrating screen with a mesh number of 300 mesh and a frequency of 32000HZ, collect the low-crystalline fiber solution passing through the screen, and put it aside to allow the fiber to sieve itself. After settling for 30 minutes, the supernatant liquid was pumped away, and the low crystallization fiber solution at the bottom was separated into solid and liquid to obtain a low crystallization fiber solid m...

Embodiment 3

[0039] (1): pulping

[0040] Cut the wheat straw to a length of about 5cm and wash it with water to prepare the material. Use the prepared material to pass through the twin-screw extruder, and add two pumps to spray the lye on the material. , use hemicellulase to pre-enzymolyze the material for 6 hours, the enzymolysis condition is pH6, the hemicellulase activity is 10u / g xylan, and the temperature is 50°C. After enzymolysis, squeeze out the sugar solution and make the material into The 5% pulp is concentrated into a disc mill for grinding to obtain wheat straw pulp.

[0041] (2): Screening

[0042] Make the pretreated wheat straw pulp into a 3% pulp concentration, put it into an overfrequency vibrating screen, the mesh number of the screen is 50 mesh, and the frequency is 40000HZ, collect the low-crystallization fiber solution that passes through the screen, and put it aside to make the fiber spontaneously After settling for 30 minutes, the supernatant liquid was pumped awa...

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PUM

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Abstract

The invention discloses a low-crystallization fiber extraction and sugar making technology. Lignocellulose is prepared into slurry, then the slurry is screened by using a super-frequency vibrating screen, and crystallized fiber is separated to obtain a low-crystallization fiber aqueous solution; enzyme hydrolysis is carried out on a solid material by using cellulase after solid-liquid separation to obtain glucose. According to the technology, comprehensive utilization of agricultural and forestry straw biomass is better achieved, the utilization rate of agricultural byproducts is increased, and the problems about environment and land are solved; the low-crystallization fiber is separated and extracted and is made the best use of; the low-crystallization fiber has the advantages of being large in specific surface area, small in physical size and good in aqueous solution mass transfer effect, so that the low-crystallization fiber is very suitable for carrying out enzymolysis saccharification, the enzyme consumption can be reduced, the solid-liquid ratio can be increased, and the enzymolysis cost is reduced.

Description

technical field [0001] The invention belongs to the field of biochemical industry, and in particular relates to a process for extracting sugar from low-crystalline fibers. Background technique [0002] 70% of my country's energy consumption comes from fossil energy, but the proportion of my country's fossil resources in the world is relatively low. Oil, natural gas and coal account for 1.2%, 1.3% and 13.9% of the same type of resources in the world respectively. Fossil resources are non-renewable resources, and their development and utilization will cause irreversible damage to the environment such as air, soil and water resources, especially the El Niño weather caused by the intensification of the greenhouse effect. Due to the shortage of fossil resources in my country, the per capita energy is far below the world average level, and my country has become the world's largest importer of crude oil, and its dependence on foreign countries is serious, which seriously affects th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/14C12P19/02
CPCC12P19/02C12P19/14C13K1/02C12P2201/00
Inventor 应汉杰单军强唐成伦陈彦君朱晨杰陈勇张业勇
Owner 江苏集萃工业生物技术研究所有限公司
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