Biological-chemical combined pretreatment method of lignocellulosic materials

A technology for lignocellulose and microbial treatment, which is used in fiber raw material treatment, pretreatment with acidic compounds, textiles and papermaking, etc., can solve the problems of sugar loss, low efficiency, long pretreatment time, etc. Processing efficiency, the effect of reducing the wrapping effect
CN102261004BActive Publication Date: 2013-09-04CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
Publication Date
2013-09-04

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Abstract

The invention belongs to the technical field of biochemical engineering and particularly relates to a method and system for carrying out combined pretreatment on lignocellulosic materials by combining microbiological treatment and dilute acid treatment. The method is characterized by grinding the lignocellulosic materials to 5-60 meshes, then putting the ground lignocellulosic materials in a microbiological treatment tank, and injecting microbiological bacteria liquid for biological treatment for 5-10 days; and putting the materials subjected to microbiological treatment in a dilute acid recycle reactor, injecting dilute acid, and starting a circulating pump to carry out circulating treatment at 80-100 DEG C for 1-4 hours, thus completing pretreatment. The method has the advantages of lowacid consumption, mild operation conditions, low requirements for compression resistance and corrosion resistance of the reactor, low treatment cost, less secondary pollution, environment friendliness and the like.
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Description

technical field

[0001] The invention belongs to the technical field of biochemical industry, and in particular relates to a method and system for joint pretreatment of lignocellulose raw materials by combining microbial treatment and dilute acid treatment. Background technique

[0002] After enzymatic hydrolysis and saccharification of lignocellulosic raw materials, six-carbon sugars mainly composed of glucose and five-carbon sugars mainly composed of xylose can be obtained, which are important raw materials for food and chemical industries. Lignocellulosic raw materials are mainly composed of three major components: cellulose, hemicellulose and lignin. Hemicellulose is used as a molecular adhesive to bind between cellulose and lignin, embedding cellulose molecules in it, forming a natural The barrier makes it difficult for enzymes to contact with cellulose molecules, resulting in slow enzymatic hydrolysis of polysaccharides in lignocellulosic raw materials. Therefore, in o...

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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