Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for liquefying wood

A wood and water solution technology, applied in wood processing, wood processing appliances, wood processing details, etc., can solve the problems of not being able to achieve mild liquefaction conditions, harsh liquefaction conditions, and mild liquefaction conditions at the same time, so as to reduce the difficulty of liquefaction and reduce liquefaction. Residue rate, effect of reducing requirements

Inactive Publication Date: 2009-09-09
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcoming that the wood atmospheric pressure liquefaction method in the prior art cannot realize mild liquefaction conditions, lower residue rate and smaller liquid ratio at the same time, and provide a kind of method that can simultaneously realize mild liquefaction conditions, lower Wood Liquefaction Method with Residue Ratio and Small Liquor Ratio
[0007] In order to solve the above-mentioned problems in the prior art, the inventors of the present invention have carried out a large amount of researches, as a result, unexpectedly found that, adopting the wood of 1 wt % NaOH aqueous solution extract content not less than 30 wt % to carry out liquefaction, can reduce greatly Liquefaction is difficult, thus solving the problem of low residue rate and mild liquefaction conditions in the prior art
And the discarded wood after cultivating Poria cocos can be used as the wood that the extract content of 1% by weight NaOH aqueous solution of the present invention is not less than 30% by weight, thereby on the one hand solved the problem that wood liquefaction condition is harsher, solvent consumption is big, on the other hand On the one hand, it has also found a new way out for the waste wood after cultivating Poria cocos

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This embodiment is used to illustrate the wood liquefaction method provided by the present invention.

[0021] 20 grams of 1% by weight NaOH aqueous solution extract content is 62.29% by weight of the masson pine powder (by 0.9 mm mesh aperture) and 40 gram of phenol and 3.2 gram of concentration is that the phosphoric acid of 85% by weight is added to the equipment equipped with stirrer, thermometer and a 500 ml three-necked flask with a reflux condenser, the three-necked flask was immersed in an oil bath preheated to 150° C. and stirred for 120 minutes to obtain a wood liquefaction product. The masson pine collection site is Taiyang Village, Heping Township, Yuexi County, Anhui Province. The Poria cocos fungus was cultivated for about 10 months after harvesting Poria cocos under conditions of 25-30° C. and relative air humidity of 60-80% humidity provided by Poria cocos growers. Abandoned masson pine brown rot wood.

[0022] Calculate the residue rate after wood liqu...

Embodiment 2

[0027] This embodiment is used to illustrate the wood liquefaction method provided by the present invention.

[0028] Carry out wood liquefaction according to the same method as Example 1, the difference is that the masson pine wood is 1% by weight NaOH aqueous solution extract content is 70.07% by weight of wood, the residue after the wood liquefaction calculated according to the method of Example 1 The rate is 1.3%. The masson pine collection site is Taiyang Village, Heping Township, Yuexi County, Anhui Province. The Poria cocos fungus was cultivated for 15 weeks under conditions of 25-30° C. and relative air humidity of 60-80% humidity provided by Poria cocos growers to remove surface layer Poria cocos hyphae and Masson pine brown rot wood after debris.

Embodiment 3

[0030] This embodiment is used to illustrate the wood liquefaction method provided by the present invention.

[0031] Carry out wood liquefaction according to the same method as Example 1, the difference is that the masson pine wood is 1% by weight NaOH aqueous solution extract content is 54.01% by weight of wood, the residue after the wood liquefaction calculated according to the method of Example 1 The rate is 3.37%. The masson pine collection site is Taiyang Village, Heping Township, Yuexi County, Anhui Province. The Poria cocos mycelium and mycelium of the surface layer are removed after cultivating Poria cocos fungi for 11 weeks under the conditions of 25-30° C. and relative air humidity of 60-80% humidity provided by Poria cocos growers. Masson pine brown rot wood after debris.

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
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

A method for liquefying wood, the method comprising mixing and contacting wood with a solvent in the presence of an acidic catalyst and under the conditions of a wood liquefaction reaction, wherein the wood is 1% by weight NaOH aqueous solution extract content of not less than 30% by weight wood. The method provided by the invention can make the condition of wood liquefaction mild, reduce the amount of solvent and greatly reduce the residue rate after wood liquefaction. In addition, the method provided by the invention also has the advantages of rich source of raw materials, environmental protection and the like. The wood liquefaction product obtained by the method provided by the invention can be directly used to prepare various new polymer materials such as adhesives, polyurethane foam plastics, phenolic molding plastics, fibers and carbon fibers.

Description

technical field [0001] The invention relates to a wood liquefaction method. Background technique [0002] Wood, as a kind of insoluble and infusible natural polymer material, cannot be processed by heating and pressure like plastic, metal and glass, so the reprocessing and deep utilization of wood are limited to a certain extent. Later research found that the products after wood liquefaction have thermal fluidity and can be used as raw materials for various new polymer materials such as adhesives, polyurethane foams, phenolic molded plastics, fibers and carbon fibers, thus broadening the application of wood field. Wood liquefaction mainly refers to the reaction of wood materials with organic solvents such as phenol, polyols, and cyclic carbonates, and the liquefaction reaction occurs under the conditions of acidic catalysts, basic catalysts, or even no catalysts, so that the cellulose, hemicellulose, and wood in the wood are liquefied. Macromolecules degrade into liquid su...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/00C12S3/02
Inventor 江泽慧李改云秦特夫任海青费本华虞华强
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com