Method for separating holocellulose in wood fibers by using choline deep-eutectic solvent

A technology of deep eutectic solvent and synthetic cellulose, which is applied in the field of biomass refining, can solve problems such as instrument corrosion, accelerated equipment aging, unfavorable interaction between deep eutectic solvent and fiber, etc., to achieve less environmental pollution and reduce equipment loss , Improve the effect of using value
CN110804893AActive Publication Date: 2020-02-18QILU UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
QILU UNIV OF TECH
Publication Date
2020-02-18

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Abstract

The invention relates to a method for separating holocellulose in wood fibers by using a choline deep-eutectic solvent. The method comprises the following steps: pretreatment of raw materials, benzene-alcohol extraction, preparation of the deep-eutectic solvent, treatment of the deep-eutectic solvent, separation of the holocellulose and recovery of the solvent. The method is characterized in thatchloride ions in the choline deep-eutectic solvent are replaced under a mild condition, a non-toxic hydrogen bond donor is matched, and the deep-eutectic solvent with low halogen content is prepared and is used for separating holocellulose in the wood fibers. The method is high in holocellulose extraction rate, high in purity, simple to operate, obvious in effect, high in practicability, small inpollution and easy to popularize.
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Description

technical field

[0001] The invention belongs to the technical field of biomass refining, and in particular relates to a choline-based deep eutectic solvent and the application of the solvent system in extracting and separating cellulose. Background technique

[0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] With the increasing shortage of petrochemical resources and the increasing pressure of environmental pollution, finding a renewable resource to replace petrochemical resources has become a top priority for sustainable development. Woody biomass resources are mainly composed of cellulose, hemicellulose, and lignin, and are the most widely available and abundant renewable resources on earth. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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