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Double-stirring-mode constant-temperature reaction device suitable for hydrolysis and saccharification of straw fibers

A straw fiber and reaction device technology, applied in the field of double-stirring mode constant temperature reaction device, can solve the problems of difficult hydrolysis, long straw fiber, lack of precise temperature, pH and rotational speed control system, etc., to reduce particle size and promote The effect of hydrolysis

Pending Publication Date: 2020-09-04
苏州聚维元创生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The straw fibers after pretreatment are longer and difficult to hydrolyze, and the hydrolysis process requires stable temperature and stirring speed. There is basically no reaction device specially used for straw fiber hydrolysis. The conventional hydrolysis reactor is only carried out by a single fixed stirring paddle. Stirring, no fiber crushing function, difficult mixing of materials and enzymes, lack of precise temperature, pH and rotational speed control system, affecting the efficiency of straw fiber hydrolysis sugar production

Method used

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  • Double-stirring-mode constant-temperature reaction device suitable for hydrolysis and saccharification of straw fibers
  • Double-stirring-mode constant-temperature reaction device suitable for hydrolysis and saccharification of straw fibers
  • Double-stirring-mode constant-temperature reaction device suitable for hydrolysis and saccharification of straw fibers

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The internal volume of the device is 10m 3 , according to the solid content of 10% by mass fraction, add water and treated wheat straw fibers at one time, open the first stirring assembly to break up the straw fibers, then close the first stirring assembly, open the second stirring assembly, keep running, and make the straw The fibers are evenly distributed in the hydrolysis system.

[0031] The temperature of the hydrolysis system inside the device is controlled at 50°C by the temperature control component, and the pH value of the hydrolysis system is adjusted to 5.0 through the acid inlet and the alkali inlet.

[0032] Enzyme solution and straw fiber absolute dry weight are added at a ratio of 50ml: 1kg, and the glucose concentration results are as follows: image 3 As shown, the final sugar concentration can reach 56.53g / L. By using the device to hydrolyze wheat fiber, sugar can be produced continuously within 72 hours, and the hydrolysis effect is relatively stabl...

Embodiment 2

[0034] The device is used to hydrolyze the pretreated corn stalk fiber in batch feeding mode. The specific operation is as follows: the absolute dry weight of the enzyme solution and the straw fiber is added at a ratio of 50ml: 1kg. The enzyme solution is added at one time, and the pretreated corn straw fiber is added in batches according to the total solid content of 15% by mass fraction. Add materials at 1, 2, 2.5, 3.5, 5.5, 7.5 hours, open the first stirring component after each feed, and close after the fibers are broken. All the other operations are as example one, and the insoluble content in the glucose concentration and the reaction system is as follows: Figure 4 As shown, the final sugar concentration can reach 81g / L, and a stable sugar increase can be maintained within 72h.

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Abstract

The invention discloses a double-stirring-mode constant-temperature reaction device suitable for hydrolysis and saccharification of straw fibers. The double-stirring-mode constant-temperature reactiondevice comprises a shell, a first stirring assembly, a second stirring assembly, a temperature control assembly and a pH value regulation and control assembly, wherein a cavity is formed in the shelland used for containing materials; the first stirring assembly and the second stirring assembly correspondingly comprise a first stirring paddle and a second stirring paddle which are arranged in thecavity. By adopting the technical scheme, the double-stirring-mode constant-temperature reaction device suitable for hydrolysis and saccharification of straw fibers has the temperature and pH value control functions, thereby providing conditions for stable hydrolysis of straw fibers; by adopting the double-helix stirring structure, the second stirring paddle on the side surface can stir the materials up and down, thereby providing important guarantee for uniform distribution of the materials in the cavity; and the blades of the first stirring paddle on the bottom are in a blade shape, and canbreak the straw fibers, thereby reducing the particle size of the straw fibers and promoting hydrolysis of the straw fibers.

Description

technical field [0001] The invention relates to a reaction device for hydrolysis and saccharification of pretreated straw, in particular to a dual-stirring mode constant temperature reaction device suitable for hydrolysis and saccharification of straw fiber. Background technique [0002] Agricultural straw is a by-product of agricultural production, and large agricultural countries all over the world produce a large amount of agricultural straw every year. With the development of bioenergy technology, more and more straws are used as materials to generate bioenergy. The most important step in converting straw into bioenergy is the conversion of sugar. The conversion efficiency of sugar in the hydrolysis process will directly affect the production of bioenergy, which is the rate-limiting stage of converting straw biomass into bioenergy. The straw fibers after pretreatment are longer and difficult to hydrolyze, and the hydrolysis process requires stable temperature and stirri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/00C12M1/38C12M1/36C12M1/34C12M1/02
CPCC12M23/02C12M23/38C12M23/48C12M27/02C12M27/06C12M41/26C12M41/22
Inventor 张天元赵太刚
Owner 苏州聚维元创生物科技有限公司
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