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Method for preparing bamboo fibers by separating bamboo

A technology of bamboo fiber and bamboo, which is applied in the field of separating plant fiber, can solve problems such as waste of energy, and achieve the effects of improving production efficiency, reducing production costs, and shortening time

Inactive Publication Date: 2010-10-20
廖大中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it takes a long time for bamboo to be boiled and softened, and a large amount of energy is wasted to provide softened or partially decomposed non-bamboo fiber organic matter for active biological enzymes to decompose non-bamboo fiber organic matter in bamboo.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, the method that vacuumizes and adds the puffing treatment separation of ion to prepare bamboo raw fiber

[0045] The steps of separating out bamboo fibrils with bamboo are as follows:

[0046] (1) Pretreatment process: cut off the bamboo knots from the original bamboo, then press the bamboo tube to destroy the bamboo tube into large pieces, and then use a flaking machine to cut the large piece into small bamboo strips. The diameter of the bamboo strips is preferably 3-6mm. Remove the slag for later use.

[0047] (2) Cooking treatment: the bamboo sticks are placed in a heating container, and the pressure of 0.4-2.0Mpa in the container is steamed for 15-25 hours, or it can be steamed under normal pressure for 35-55 hours.

[0048] (3) Puffing treatment by vacuuming and adding ions: put the steamed bamboo strips in a vacuum container, pump it into a vacuum of 3.0-4.0Mpa in an environment of 200-250°C, and inject hydrogen ions or oxygen into the vacuum contai...

Embodiment 2

[0051] Embodiment 2, circulation carries out pressure change, and vacuumizes and adds the puffing treatment separation of ion and prepares the method for bamboo fiber The step of separating the bamboo fiber with bamboo is as follows:

[0052] (1) Pretreatment process: same as embodiment 1.

[0053] (2) Cyclic puffing treatment of pressure change: place the bamboo strips in a high-pressure container, in a gas environment of 250-300 ° C, in a high-temperature and high-pressure environment with a pressure of 3.5-4.0 Mpa, inject a 100-degree lower than the environment in the container into the high-pressure container. The cooling liquid or cooling water mist at ~200°C reduces the pressure by 0.5 to 2.0Mpa at the same time, so that the cooling liquid or cooling water mist is sucked into the micropores of the bamboo strips, resulting in expansion. Then the temperature and pressure are raised again, and then low-temperature cooling liquid or cooling water mist is injected. It is fou...

Embodiment 3

[0059] Embodiment 3, use liquid carbon dioxide heated gasification " explosion " puffing treatment separation to prepare the method for the bamboo fiber The step of separating the bamboo fiber with bamboo is as follows:

[0060] (1) Pretreatment process: same as embodiment 1.

[0061] (2) Expansion treatment of "explosion" of liquid carbon dioxide heated and gasified: In a high-pressure container, immerse the bamboo strips in liquid carbon dioxide at a temperature of about -20°C for low-temperature treatment, until the temperature of the bamboo strips is basically the same as the temperature of the liquid carbon dioxide After 10-60 minutes, and the liquid carbon dioxide has penetrated into the micropores of the bamboo strips in large quantities, the liquid carbon dioxide is completely extracted from the high-pressure container, and then quickly injects high-temperature water or steam at 90-300°C into the high-pressure container to make the bamboo strips The liquid carbon dioxi...

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Abstract

The invention discloses a method for preparing bamboo fibers by separating bamboo, which belongs to a technical method for separating the bamboo fibers from the bamboo. The method comprises the following successive steps of: cutting and splitting the bamboo into bamboo strips, and soaking the bamboo strips into liquid with active bio-enzyme for enzymolysis; and the method is characterized in that: after the splitting of the bamboo into bamboo strips and before the enzymolysis, the bamboo strips are subjected to expanded treatment; and the expanded treatment comprises vacuumizing treatment on the bamboo strips, or temperature change treatment on the bamboo strips, or pressure change treatment on the bamboo strips; or the expanded treatment is combined expanded treatment with two or more kinds of expanded treatment. The method for preparing the bamboo fibers has the advantages of: the boiling separation after the expanded treatment, and microbe and active bio-enzyme separation on non-bamboo fiber organic matters are easier, the time is short, the available temperature and pressure are low, less microbe and active bio-enzyme are used, and the aim of separating the bamboo fibers at low cost is fulfilled. The obtained bamboo fibers are environment-friendly products.

Description

technical field [0001] The invention belongs to the technology of separating plant fibrils from long-fiber plants, in particular to a process for separating bamboo fibrils from bamboo. Background technique [0002] Chinese patent 200510022616.X "Preparation of raw bamboo fiber for textile by active biological enzyme method" This invention discloses to people an active biological enzyme method that does not require any chemical treatment, simple operation, short processing time, and stable product quality. Textile raw bamboo fiber, the process is as follows: first cut the bamboo and cut it into bamboo strips, then boil it in boiling water to soften it, take it out and crush it, hammer it into filaments, then put it into a pressure cooker for steaming, and the treated Bamboo shreds are immersed in a solution containing active biological enzymes to decompose lignin, hemicellulose, and pectin in bamboo shreds to obtain cellulose fibers in bamboo, and the bamboo fibers after enzy...

Claims

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Application Information

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IPC IPC(8): D01C1/00C12S3/04
Inventor 廖大中
Owner 廖大中
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