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Filter pressing type dilute acid hydrolysis reactor for cellulose raw material hydrolysis saccharification

A dilute acid hydrolysis and cellulose technology, which is applied in the production, application, and sugar production of sugar, can solve the problems of complicated operation, short hydrolysis time, decomposition, etc., and achieve the effect of optimizing process conditions and improving the rate of hydrolysis and saccharification

Pending Publication Date: 2021-03-16
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dilute acid hydrolysis is a green technology for saccharification of cellulose. Compared with concentrated acid hydrolysis and enzyme hydrolysis, the hydrolysis time is short, the efficiency is high, and it is friendly to the environment. It has many advantages, but when the residence time of dilute acid hydrolysis is too long, the fiber Vegetarian raw materials are prone to further decomposition of products to produce fermentation inhibitors
In order to reduce the production of fermentation inhibitors and further increase the saccharification rate of dilute acid hydrolysis of cellulose raw materials, people continue to explore new methods. Hydrolysis reactors such as percolation, counter-current, and cross-flow have appeared successively, but there are still technical problems in all of them. Disadvantages such as imperfection, complicated operation or high cost

Method used

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  • Filter pressing type dilute acid hydrolysis reactor for cellulose raw material hydrolysis saccharification
  • Filter pressing type dilute acid hydrolysis reactor for cellulose raw material hydrolysis saccharification
  • Filter pressing type dilute acid hydrolysis reactor for cellulose raw material hydrolysis saccharification

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A pressure filter type dilute acid hydrolysis reactor for hydrolysis and saccharification of cellulose raw materials, including a dilute acid tank 26, a raw material tank 27 and a product tank 11, the tanks are separated by porous tank walls, and the dilute acid tank walls 25 It is composed of two plates of tank wall plate A33 and tank wall plate B34. The tank wall 12 of the raw material tank is composed of three plates of tank wall plate A33, tank wall plate B34 and tank wall plate C32. The three types of tank wall plates have The hole 35 with the same position, shape, size and number can be adjusted. The dilute acid tank 26 has a dilute acid inlet pipe 30 with a switch 29 and a discharge pipe 21 with a switch 22. The lower part of the product tank 11 also has a switch 14. There is a shaft 10 in the middle of the raw material tank 27, and the raw material tank cover 1 is connected with the shaft 10 through the rotating wheel 3, and the rotating wheel 3 is composed of th...

Embodiment 2

[0024] Treat corn stalks with dilute acid secondary hydrolysis, take a certain amount of corn stalks, wash and crush them, and then put them into the raw material tank 27, first perform primary hydrolysis, and put a certain amount of 1% corn stalks through the dilute acid inlet pipe 30 Sulfuric acid, by moving the dilute acid tank wall plate B34, adjust the aperture size of the hole 35 of the dilute acid tank tank wall 25, let 1% sulfuric acid enter the raw material tank 27, close the perforation of the dilute acid tank tank wall 25 after submerging the corn stalks 35. Turn on the switch 17 of the steam pipe and the switch 23 of the steam exhaust port 24, let the 180°C steam enter the raw material tank 27 for a residence time of 8 minutes, then close the switch 23 of the steam pipe switch 17 and the steam exhaust port 24, and move the raw material tank The tank wall plate B34 and the raw material tank wall plate C32 adjust the aperture size of the hole 35 of the raw material ta...

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Abstract

The present invention discloses a filter pressing type dilute acid hydrolysis reactor for cellulose raw material hydrolysis saccharification. The filter pressing type dilute acid hydrolysis reactor iscomposed of a dilute acid tank, a raw material tank and a product tank, when a rotating wheel in the raw material tank rotates along a thread on a shaft, a raw material tank cover is pushed to move up and down along the shaft, and a filter pressing effect on hydrolysate is generated; and a steam exhaust port and a steam heat exchange disc are arranged on the lower portion of the raw material tank, the raw material tank can be aerated and heated through steam, the dilute acid tank, the raw material tank and the product tank are separated through porous tank walls, the hole diameters of holes in the porous tank walls of the raw material tank are adjusted, and solid-liquid separation of hydrolysate can be rapidly carried out. According to the invention, the hydrolysis time of the cellulose raw material can be effectively controlled, the generation of fermentation inhibitors is reduced, and the variety and concentration of dilute acid, the temperature of the raw material tank, the steam inlet amount and the retention time can be changed, so that two-stage or multi-stage hydrolysis saccharification or process condition optimization is carried out on the cellulose raw material by adopting different hydrolysis conditions, and the optimal process condition is explored.

Description

technical field [0001] The invention relates to a dilute acid hydrolysis reactor used for hydrolysis and saccharification of cellulose raw materials, in particular to a pressure filter type dilute acid hydrolysis reactor. Background technique [0002] The cellulose raw material itself has a high degree of crystallinity. In addition to cellulose, there are various components of hemicellulose and lignin. Dilute acid hydrolysis is a green technology for saccharification of cellulose. Compared with concentrated acid hydrolysis and enzyme hydrolysis, the hydrolysis time is short, the efficiency is high, and it is friendly to the environment. It has many advantages, but when the residence time of dilute acid hydrolysis is too long, the fiber Vegetarian raw materials are prone to further decomposition of products to produce fermentation inhibitors. In order to reduce the production of fermentation inhibitors and further increase the saccharification rate of dilute acid hydrolysis ...

Claims

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Application Information

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IPC IPC(8): C13K1/02
CPCC13K1/02
Inventor 孙世中宋洪川樊芳玲郭嘉航黄晶心徐武美官会林
Owner YUNNAN NORMAL UNIV