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Method for continuously separating lignocellulose components

A lignocellulose and quality technology, which is applied in the fields of fiber raw materials, fiber raw material processing, textiles and paper making, etc., can solve problems such as poor results, and achieve the effect of improving the effect of enzymatic hydrolysis and saccharification, improving catalytic efficiency and efficient dealkalization.

Active Publication Date: 2018-09-11
NANJING HIGH TECH UNIV BIOLOGICAL TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for continuously separating lignocellulose components, so as to solve problems such as poor effect in the prior art

Method used

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  • Method for continuously separating lignocellulose components
  • Method for continuously separating lignocellulose components

Examples

Experimental program
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Effect test

Embodiment 1

[0034] First cut the corn stalks into 2-8cm small pieces. Add it into the drum washing machine 2 to rinse the silt and soluble matter, and the washed water filters the silt and recycles multiple batches for anaerobic treatment. When the cleaned corn stalks pass through the filter 3, they are extruded and dehydrated and enter the first section of the twin-screw extruder 4. At the same time, 5% NaOH solution was pumped in to obtain alkaline catalyzed stalks, which were then placed in an insulated bin for 60 minutes. Transport the material after the heat preservation reaction to the screw displacement washing dealkalization machine, pump in clean water for countercurrent washing, and obtain lignin alkaline black liquor and dealkalization material. Transport the dealkalized material to the screw feeder at the front of the single helical tubular reactor to form a plug, and at the same time, feed high-temperature steam at 180°C into the reactor, and the high-temperature steam penet...

Embodiment 2

[0036] First cut the corn stalks into 2-8cm small pieces. Add it into the drum washing machine 2 to rinse the silt and soluble matter, and the washed water filters the silt and recycles multiple batches for anaerobic treatment. When the cleaned corn stalks pass through the filter 3, they are extruded and dehydrated and enter the first section of the twin-screw extruder 4. At the same time, 2% NaOH solution was pumped in to obtain alkaline catalyzed stalks, which were then placed in an insulated bin for 30 minutes. Transport the material after the heat preservation reaction to the screw displacement washing dealkalization machine, pump in clean water for countercurrent washing, and obtain lignin alkaline black liquor and dealkalization material. Transport the dealkalized material to the screw feeder at the front of the single helical tubular reactor to form a material plug, and at the same time feed 140°C high-temperature steam and 0.2% sulfuric acid solution into the reactor,...

Embodiment 3

[0038]First cut the corn stalks into 2-8cm small pieces. Add it into the drum washing machine 2 to rinse the silt and soluble matter, and the washed water filters the silt and recycles multiple batches for anaerobic treatment. When the cleaned corn stalks pass through the filter 3, they are extruded and dehydrated and enter the first section of the twin-screw extruder 4. At the same time, 4% NaOH solution was pumped in to obtain alkaline catalyzed stalks, which were then placed in an insulated bin for 60 minutes. Transport the material after the heat preservation reaction to the screw displacement washing dealkalization machine, pump in clean water for countercurrent washing, and obtain lignin alkaline black liquor and dealkalization material. Transport the dealkalization material to the screw feeder at the front of the single helical tubular reactor to form a material plug, and at the same time feed 160°C high-temperature steam and 0.5% sulfuric acid solution into the reacto...

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Abstract

The invention discloses a method for continuously separating lignocellulose components. Through various different spiral combination, lignin, hemicellulose and cellulose are continuously separated. The method comprises the concrete steps of 1, cutting stalks into sections by a grass cutting machine; 2, conveying the cut stalks into a drum type water washing machine; cleaning silt and soluble substances in the stalks by hot water; performing cyclic use for several batches on washing water after the silt is filtered; then, performing anaerobic treatment; 3, conveying the cleaned stalks into a double-screw extrusion machine; meanwhile, introducing alkali liquid; performing heat insulation reaction on extrusion materials; 4, conveying the materials after the reaction into a spiral replacementwashing alkali removal machine for extrusion delignification and dealkalization; obtaining lignin alkaline black liquor and waste residue; recovering fine fiber in the black liquor; 5, conveying the obtained residue into a continuous steaming and boiling reactor; performing high-temperature continuous steaming and boiling and performing spray blasting; 6, conveying the sprayed materials into the spiral extrusion machine; extruding and cleaning the residue to obtain hemicellulose hydrolysate and rich-cellulose residue; finally realizing the continuous separation of the lignin, the hemicelluloseand the cellulose.

Description

technical field [0001] The invention belongs to the fields of biochemical industry and bioenergy, and in particular relates to a method for continuously separating lignocellulose components. Background technique [0002] Due to the development and utilization of petrochemical energy (coal, oil, natural gas, etc.), human society has developed rapidly. However, with the growth of population and the development of social productivity, energy shortage and environmental degradation have become major problems faced by human beings in the 21st century and need to be solved urgently, and they are also the main factors restricting the sustainable development of my country's society and economy. Therefore, the development and utilization of green and renewable alternative resources is related to the future destiny of mankind, and has attracted widespread attention from governments and scientific and technological circles. As an important part of renewable resources, lignocellulose re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C1/06C08H7/00C08B37/14
CPCC08B37/0003C08H8/00D21C1/06C08B37/0057C08L1/02C08L5/14C08L97/005C08L97/02D21B1/021D21B1/22D21C3/02
Inventor 应汉杰唐成伦朱晨杰陈勇单军强张宇李明
Owner NANJING HIGH TECH UNIV BIOLOGICAL TECH RES INST CO LTD
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