A method for continuous separation of lignocellulose components

A technology of lignocellulose and materials, which is applied in the fields of biochemical industry and bioenergy, can solve problems such as poor results, and achieve the effects of improved enzymatic hydrolysis and saccharification effects, large specific surface area, and high degree of dissociation

Active Publication Date: 2019-10-29
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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  • A method for continuous separation of lignocellulose components
  • A method for continuous separation of lignocellulose components

Examples

Experimental program
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Effect test

Embodiment 1

[0033] 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

[0035] 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

[0037] 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 react...

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Abstract

Disclosed is a method for continuously separating a lignocellulose component, the method comprising the following steps: chopping straw, washing same with water, conveying lignocellulose into a twin-screw extruder (4), introducing an alkaline reagent, fully mixing same for a reaction, and conveying same to a heat preservation chamber (5) for a heat preservation reaction; conveying the resulting material to a spiral displacement washing de-alkalizer (6), rinsing same, then separating same to obtain a lignin alkaline black liquor and a material from which an alkali has been removed, and recovering fine fibers from the black liquor; conveying the material from which an alkali has been removed into a continuous cooking reactor (11), introducing water steam for steaming and blowing blasting, and collecting a blasted material; and conveying the blasted material into a screw extruder, and squeezing and washing a residue to obtain a hemicellulose hydrolyzate and a cellulose-containing residue.

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 Patents(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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