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Straw fiber extracting technology

An extraction process and straw fiber technology, applied in the field of straw fiber extraction process, can solve the problems of high cost, can not be reused, and generate a large amount of waste liquid, and achieve the effect of reducing dosage and realizing no waste liquid discharge.

Inactive Publication Date: 2018-02-23
TIANJIN RONGYEDA TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic rice straw fiber extraction mainly includes chemical methods such as caustic soda method, sulfate method, ammonia-soda method, etc., supplemented by mechanical methods. The biggest problem with these traditional methods is that other substances such as lignin and pectin in the raw materials except fiber etc. cannot be reused, so a large amount of waste liquid will be generated during the fiber extraction process, which will be directly discharged to pollute the environment, and high cost will be required for purification by sewage treatment equipment

Method used

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  • Straw fiber extracting technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Dissolve 8 parts of sodium bicarbonate in 300 parts of water to form a solution, then add 0.5 part of alkaline xylanase, 0.3 part of fatty alcohol surface penetrant, 0.3 part of activated carbon catalyst, 0.3 part of oxidized polyethylene wax, 0.3 parts of epoxidized soybean oil, stirred evenly to form a weak alkaline solution.

[0022] To process 1 ton of straw, weigh the straw, cut it off, add 700kg of weak alkaline solution through the spray pump to soak the straw, then put the soaked straw into the thread rolling machine for rubbing, and at the same time put it into the thread rolling machine Pass into 1t of pure water. After the thread rubbing is completed, all the slurry is transferred to the high-consistency mill for thermal grinding, and pure water is poured into the high-consistency mill to make the mass fraction of the slurry in the high-consistency mill reach 30%, and then transferred to the first adjustment pool For washing and dilution, the ratio of the fl...

Embodiment 2

[0024] Dissolve 9 parts of sodium bicarbonate in 320 parts of water to form a solution, then add 0.5 part of alkaline xylanase, 0.4 part of fatty alcohol surface penetrant, 0.2 part of activated carbon catalyst, 0.3 part of oxidized polyethylene wax, 0.3 parts of epoxidized soybean oil, stirred evenly to form a weak alkaline solution.

[0025] To process 1 ton of straw, weigh the straw, cut it off, add 800kg of weak alkaline solution through the spray pump to soak the straw, and then put the soaked straw into the thread rolling machine for rubbing, and at the same time put it into the thread rolling machine Pass into 1t of pure water. After the thread rubbing is completed, all the slurry is transferred to the high-consistency mill for thermal grinding, and pure water is poured into the high-consistency mill to make the mass fraction of the slurry in the high-consistency mill reach 30%, and then transferred to the first adjustment pool For washing and dilution, the ratio of th...

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Abstract

The invention provides a straw fiber extracting technology. The straw fiber extracting technology comprises the following steps: preimpregnating straw, dividing a thread by using a thread rolling machine, performing hot milling in a high-consistency mill, entering a first adjusting tank for initial diluting and washing, then entering a double-mesh squeezing machine for squeezing water in a slurry,enabling the squeezed slurry to enter a second adjusting tank for diluting and washing, and then passing through a second double-mesh squeezing machine for squeezing water to obtain clean fiber, wherein three-stage precipitation separation is performed on a first squeezed solution in the first double-mesh squeezing machine, a concentrated solution in a lower layer is used for preimpregnating thestraw during preparation of a sheet material, and a supernatant is used for supplementing liquid in the straw processing process during the preparation of the sheet material; a second squeezed solution in the second double-mesh squeezing machine is returned back into the first adjusting tank. By the straw fiber extracting technology, washing water after straw fiber extraction is effectively utilized, so that water recycling and no waste liquid discharge are achieved; meanwhile, separated lignin, pectin and other substances are utilized, so that the straw fiber extracting technology is energy-saving and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of straw fiber extraction technology, and in particular relates to a straw fiber extraction technology. Background technique [0002] At present, domestic rice straw fiber extraction mainly includes chemical methods such as caustic soda method, sulfate method, and ammonia-soda method, supplemented by mechanical methods. The biggest problem existing in these traditional methods is other substances such as lignin and pectin in raw materials other than fiber. etc. cannot be reused, so a large amount of waste liquid will be generated in the fiber extraction process, which will be directly discharged to pollute the environment, and high cost will be required for purification by sewage treatment equipment. Contents of the invention [0003] In view of this, the present invention aims to propose a straw fiber extraction process, which effectively utilizes the washing water after straw fiber extraction, realizes w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/00
CPCD01C1/00
Inventor 王从容
Owner TIANJIN RONGYEDA TECH DEV
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