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

Solvent and method for dissolving plants

A plant and solvent technology, applied in the production of bulk chemicals, etc., can solve the problems of complex dissolution process, high energy consumption, three wastes, etc., to avoid environmental pollution and expand the application effect.

Inactive Publication Date: 2016-12-14
DONGHUA UNIV +1
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is that the dissolving process of the existing plants is complicated, the energy consumption is large, and the three wastes are easily produced

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] A way to dissolve plants:

[0021] 1) Carry out high-temperature alkali cooking to pine wood, the cooking temperature is 50°C, the cooking time is 0.5h, and the concentration of NaOH aqueous solution is 200g / L. After filtering, wash the filter residue with water until neutral to obtain lignin and cellulose;

[0022] 2) Prepare a composite solvent with a [EMIM]Ac / DMSO mass ratio of 20:80, and dissolve the mixture of lignin and cellulose in the composite solvent at 60° C. for 1 hour to obtain a transparent solution with a concentration of 15%.

Embodiment 2

[0024] A way to dissolve plants:

[0025] 1) Carry out high-temperature alkali cooking to Chinese fir, the cooking temperature is 100° C., the cooking time is 2 hours, and the concentration of NaOH aqueous solution is 50 g / L. After filtering, wash the filter residue with water until neutral to obtain lignin and cellulose;

[0026] 2) A composite solvent with rEMIM]Ac / DMAc mass ratio of 30:70 was prepared, and the mixture of lignin and cellulose was dissolved in the composite solvent at 100° C. for 0.5 h to obtain a transparent solution with a concentration of 13%.

Embodiment 3

[0028] A way to dissolve plants:

[0029] 1) Poplar is subjected to high-temperature alkali cooking, the cooking temperature is 80° C., the cooking time is 1.5 h, and the concentration of NaOH aqueous solution is 100 g / L. After filtering, wash the filter residue with water until neutral to obtain lignin and cellulose;

[0030] 2) A composite solvent with a mass ratio of [EMIM][DEP] / DMF of 30:70 was prepared, and the mixture of lignin and cellulose was dissolved in the composite solvent at 80° C. for 1.5 h to obtain a transparent solution with a concentration of 12%.

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

No PUM Login to View More

Abstract

The invention discloses a solvent and method for dissolving plants. The solvent is prepared by mixing an imidazole ionic liquid and a polar aprotic solvent. The method comprises the following steps: carrying out high temperature alkali cooking on the plants, removing a filtrate containing hemicelluloses after filtration, and carrying out water washing on filter residues to be neutral to obtain a blend of lignin and cellulose; dissolving the blend of the lignin and cellulose in the solvent to dissolve the plants. The solvent provided by the invention can efficiently dissolve wood and agricultural residues at a lower temperature. The hemicelluloses are low in molecular weights, soluble in water and bad in performances, and have great influences on mechanical properties of the final product, thus firstly, the high temperature alkali cooking is carried out on the plants to remove the hemicelluloses, and then the residual lignin and cellulose are directly dissolved. The solvent is adopted for directly dissolving plant resources of the wood, the agricultural residues and the like; the cellulose, lignin and hemicelluloses are not required to be separated, so that biomass resources can be directly used.

Description

technical field [0001] The invention relates to a solvent for biomass materials, in particular to a solvent for wood and agricultural waste. Background technique [0002] Plants are a renewable, recyclable, and degradable biomass material that grows in large quantities every year. Its main components include cellulose, lignin and hemicellulose, all of which are important chemical raw materials and are widely used in many fields such as papermaking, textiles, food, medicine, construction, electrical engineering, electronics, and machinery. However, the molecular structure and performance of cellulose, lignin and hemicellulose are quite different, so it is necessary to separate the three elements of the plant, and extract the three biomass materials for subsequent processing and use. In recent years, there have been many studies on the effective extraction of cellulose, lignin and hemicellulose, but there is a large amount of energy consumption, especially water consumption, ...

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
IPC IPC(8): C08J3/09C08L97/00C08L1/02
CPCC08J3/096C08J3/097C08J3/098C08J2301/02C08J2397/00Y02P20/54
Inventor 张玥王东兴余木火王乐军邓雅季皓郎玉玺刘怡宁
Owner DONGHUA UNIV
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