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Pilot production line and process for extracting cellulose nanocrystals from biomass resources

A technology of biomass resources and cellulose, applied in fiber raw material processing, textiles and papermaking, etc., to achieve the effect of simplified pilot production line, simple and effective design, good market prospect and promotion and application value

Inactive Publication Date: 2019-01-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of cellulose nanocrystals in laboratory experiments has become more and more mature, but how to realize industrial production has not been reported.

Method used

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  • Pilot production line and process for extracting cellulose nanocrystals from biomass resources
  • Pilot production line and process for extracting cellulose nanocrystals from biomass resources
  • Pilot production line and process for extracting cellulose nanocrystals from biomass resources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) According to the existing extraction method of certain cellulose nanocrystals, take cotton linters, sodium hydroxide, concentrated sulfuric acid, water respectively by weight parts, and reserve them for future use;

[0048] (2) Water and sodium hydroxide in (1) are injected into the alkali storage tank, stirred, and mixed with lye of 2% mass concentration; the first discharge valve is closed, and the above-mentioned (1) cotton linters and 1 part and 20 parts of sodium hydroxide solution are added to the alkali leaching reaction kettle through the feed port, and the alkali leaching stirring motor is turned on for stirring. While stirring, the alkali leaching is carried out for 12 hours;

[0049] (3) Open the first discharge valve, pass the product soaked in (2) medium alkali into a vacuum filter, and filter and wash until it is nearly neutral to obtain the purified product;

[0050] (4) inject water and sulfuric acid in (1) into the sulfuric acid storage tank, stir, ...

Embodiment 2

[0056] (1) According to the existing extraction method of certain cellulose nanocrystals, take ascidian powder, potassium hydroxide, concentrated sulfuric acid, water respectively by weight, and keep it for subsequent use;

[0057] (2) Inject the water and potassium hydroxide in (1) into the alkali storage tank, stir, and prepare lye with a mass concentration of 5%; weigh 1 part of ascidian powder in the above (1), and pass 30 parts of potassium hydroxide solution through Add the alkali leaching reaction kettle to the feed port, turn on the alkali leaching stirring motor to stir, and while stirring, alkali leaching for 40 hours;

[0058] (3) Open the first discharge valve, pass the product after (2) medium alkali immersion into vacuum suction filter, suction filter, wash to neutrality and be configured as 300 parts of suspension; Add 5 parts of glacial acetic acid and 10 parts Parts of sodium hypochlorite solution, repeated three times until the suspension was bleached to whit...

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Abstract

The invention discloses a pilot-scale production line and a process for extracting cellulose nanocrystalline from biomass resources. The pilot-scale production line comprises a purification system, an acidolysis system and a post-treatment system, wherein the purification system comprises an alkali storage tank, an alkali leaching reaction kettle, a vacuum suction filter and a purified product storage tank, which are connected in sequence; the acidolysis system comprises a sulfuric acid storage tank and an acidolysis reaction kettle which are connected in sequence; and the post-treatment system comprises a tubular centrifugal machine, a washing kettle, an ultrasonic disperser and a product storage tank. The pilot-scale production line can meet different demands of different raw materials and different hydrolysis methods for reactors. The pilot-scale production line of the cellulose nanocrystalline is simple and effective in design, good in test effect and reasonable in layout and has a good market prospect and a popularization and application value.

Description

technical field [0001] The invention specifically relates to a pilot production line for extracting cellulose nanocrystals from biomass resources and a production process thereof. Background technique [0002] Taking a research from the results of the laboratory to industrial production is a huge and complex process. This is not just a pure copying and expansion of the raw materials, steps, equipment, etc. used in the laboratory. The amplification method adopted in general laboratories is the step-by-step amplification method. The steps of this method mainly include: equipment selection, process condition optimization, and reaction vessel enlargement. Equipment selection refers to the selection of reactors with different structures and styles to study the same reaction process. After the selection of equipment is confirmed, it is necessary to optimize the process conditions in the selected test equipment. At this time, the main task is to investigate various process condit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/00
CPCD21C5/00
Inventor 夏涛宇文红娟林宁
Owner WUHAN UNIV OF TECH
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