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Technology for preparing xylose by using ozone for acid hydrolysis of hemicellulose

A hemicellulose, ozone acid technology, applied in the production of sugar, xylose, sugar production and other directions, can solve the problems of long acid hydrolysis time, large loss of xylose, low yield of xylose, etc. Yield improvement, reduction of xylose loss, and effect of increasing xylose yield

Active Publication Date: 2017-12-15
四川雅华生物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the problems of long acid hydrolysis time, large loss of xylose and low yield of xylose in the preparation of xylose by acid hydrolysis of hemicellulose in the prior art, and provides a process for preparation of xylose by ozone acid hydrolysis of hemicellulose

Method used

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  • Technology for preparing xylose by using ozone for acid hydrolysis of hemicellulose
  • Technology for preparing xylose by using ozone for acid hydrolysis of hemicellulose
  • Technology for preparing xylose by using ozone for acid hydrolysis of hemicellulose

Examples

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Embodiment 1

[0033] A process for preparing xylose by ozone acid hydrolysis of hemicellulose, comprising the following process steps:

[0034] A, the hemicellulose solution containing hemicellulose is added to a plurality of vertical packing tubes 4, the top of each of the packing tubes 4 is provided with a tail gas collection pipe 6, and the top of the tail gas collection pipe 6 is provided with Raw material liquid inlet pipe 7, the raw material liquid inlet pipe 7 communicates with the upper part of each of the filler pipes 4 through a pipeline; the hemicellulose solution flows into the filler pipe 4 through the raw material liquid inlet pipe 7;

[0035] B, the bottom of the filler pipe 4 is provided with an ozone inlet pipe 5, and the ozone inlet pipe 5 is provided with a plurality of ozone nozzles 8 corresponding to the filler pipe 4, and the ozone flows from the ozone inlet pipe 5 enter, and then spray into the filler pipe 4 to treat the hemicellulose solution, and after the treatment...

Embodiment 2

[0042]A device for producing xylose by ozone acid hydrolysis of hemicellulose, comprising an aeration device 1, a hydrolysis reaction box 2 and a xylose separation device 3; the aeration device 1 includes a plurality of vertically arranged packing pipes 4 and ozone inlet pipes 5. The top of each of the packing pipes 4 is provided with a tail gas collecting pipe 6, and the top of the tail gas collecting pipe 6 is provided with a raw material liquid inlet pipe 7, and the raw material liquid inlet pipe 7 communicates with each of the pipes through multiple pipes. The top of the filler pipe 4 communicates, the bottom of the filler pipe 4 is provided with the ozone inlet pipe 5, and the ozone inlet pipe 5 is provided with a plurality of ozone nozzles 8 corresponding to the filler pipe 4; The bottom of the stuffing pipe 4 communicates with the raw material liquid collection kettle 9, and the bottom of the raw material liquid collection kettle 9 communicates with the hydrolysis reacti...

Embodiment 3

[0063] A process for preparing xylose by ozone acid hydrolysis of hemicellulose, comprising the following process steps:

[0064] A, the hemicellulose solution containing hemicellulose is added to a plurality of vertical packing tubes 4, the top of each of the packing tubes 4 is provided with a tail gas collection pipe 6, and the top of the tail gas collection pipe 6 is provided with Raw material liquid inlet pipe 7, the raw material liquid inlet pipe 7 communicates with the upper part of each of the filler pipes 4 through a pipeline; the hemicellulose solution flows into the filler pipe 4 through the raw material liquid inlet pipe 7;

[0065] B, the bottom of the filler pipe 4 is provided with an ozone inlet pipe 5, and the ozone inlet pipe 5 is provided with a plurality of ozone nozzles 8 corresponding to the filler pipe 4, and the ozone flows from the ozone inlet pipe 5 enter, and then spray into the filler pipe 4 to treat the hemicellulose solution, and after the treatment...

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Abstract

The invention relates to a technology for preparing xylose by using ozone for acid hydrolysis of hemicellulose, and belongs to the technical field of preparation of xylose. The technology is characterized in that the hemicellulose is performed with limited oxidizing by ozone in a particular aeration type, so that the ozone cannot react with the hemicellulose to generate carbon dioxide and water, and only one part of chemical bonds in the hemicellulose is damaged, thereby creating conditions for acid hydrolysis; the acid hydrolysis can complete the production of target product, namely D-xylose at lower temperature, thereby improving the productivity. The technology has the advantage that the hemicellulose is treated by the ozone and the acid hydrolysis, so that the acid hydrolysis time is shortened, and the environment-friendly and pollution-free effects are realized.

Description

technical field [0001] The invention relates to a process for preparing xylose by using hemicellulose, more specifically, the invention relates to a process for preparing xylose by hydrolyzing hemicellulose with ozone acid, which belongs to the technical field of xylose preparation. Background technique [0002] Xylose is a component of xylan, which is widely found in plants. Xylose also exists in animal heparin, chondroitin and glycoproteins. It is the linking unit of sugar chains and serine (or threonine) in some glycoproteins. No free xylose has been found in nature so far. Solutions containing hemicellulose can be made into xylose. [0003] The State Intellectual Property Office disclosed an invention with the publication number CN102643935A on 2012.8.22, titled "A Method for Preparing Xylose by Squeezing Waste Alkali During the Production of Viscose Fiber", which involves a method of using viscose The invention discloses a method for preparing xylose by pressing waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K13/00
CPCC13K13/002
Inventor 莫世清邓传东陈德水黄钱威李哲
Owner 四川雅华生物有限公司
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