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Method for separating parenchyma cells from fibers in bamboo wood

A parenchyma cell and fiber separation technology, used in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of incomplete separation, incompletely pulverized bamboo powder, too fine bamboo powder, etc., to avoid chemical consumption. And the effect of pollution, separation effect is complete, and the effect of avoiding damage

Active Publication Date: 2015-12-16
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method has relatively complicated technology, high requirements for processing equipment, and high energy consumption; and the separation efficiency of bamboo fiber and parenchyma cells is not high, and the separation is not complete.
For example, if the ordinary bamboo powder sieve separation technology is used, the purity of the parenchyma cells and fibers obtained by ordinary sieving is not high. and fibers; if the sieve mesh is too large, the bamboo powder will be too fine, and the fibers will be mixed and difficult to separate
It is generally believed that most of the bamboo powder that passes through the 200 mesh sieve is parenchyma cells, but in the bamboo powder particles that do not pass, it is difficult to separate parenchyma cells and bamboo fibers.

Method used

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  • Method for separating parenchyma cells from fibers in bamboo wood
  • Method for separating parenchyma cells from fibers in bamboo wood
  • Method for separating parenchyma cells from fibers in bamboo wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a method for separating parenchyma cells and fibers, which specifically includes the following steps:

[0043] Step (1) crushing: after removing the bamboo bark and extramedullary tissue of moso bamboo, take the bamboo green part, pre-process it into bamboo stems with a length of 2 cm, a width and a thickness of 0.5 mm, and put the bamboo stems into a small grinder for intermittent crushing 6 minutes (0.5 minutes of work, 1 minute of shutdown), take the powder particles above 30 mesh;

[0044] Step (2) Screening: Sieve the pulverized powder particles through 30, 60, 120, and 200 mesh sieves to obtain 30-60 mesh, 120-200 mesh and larger than 200 mesh powder particles; respectively collect particle sizes of 120-200 mesh powder particles and powder particles larger than 200 mesh to obtain parenchyma cells with different purity;

[0045] Step (3) Separation: Take the 30-60 mesh powder particles, add 20 times the volume of water, stir and let stand,...

Embodiment 2

[0053] This embodiment specifically includes the following steps:

[0054] Step (1) crushing: after removing the bamboo bark and extramedullary tissue of moso bamboo, take the bamboo flesh, and pre-process it into a bamboo stalk with a length of 2.5 cm, a width of 0.5 mm, and a thickness of 0.8 mm. Put the bamboo stalks into a small pulverizer and pulverize them intermittently for 6 minutes (0.5 minutes of work, 1 minute of shutdown), and take powder particles above 30 mesh;

[0055] Step (2) Screening: Sieve the pulverized powder particles through 30, 60, 120, and 200 mesh sieves to obtain 30-60 mesh, 120-200 mesh and larger than 200 mesh powder particles; respectively collect particle sizes of 120-200 mesh powder particles and powder particles larger than 200 mesh to obtain parenchyma cells with different purity;

[0056] Step (3) Separation: Take the powder particles between 30 and 60 meshes, add 15 times the volume of water, stir and let stand, collect the floating matter...

Embodiment 3

[0064] This embodiment specifically includes the following steps:

[0065] Step (1) crushing: after removing the bark and extramedullary tissue of moso bamboo, take the bamboo yellow part, and pre-process it into a bamboo stalk with a length of 2.5 cm, a width of 0.5 mm, and a thickness of 0.8 mm. Put the bamboo stalks into a small pulverizer and pulverize them intermittently for 6 minutes (0.5 minutes of work, 1 minute of shutdown), and take powder particles above 30 mesh;

[0066] Step (2) Screening: Sieve the pulverized powder particles through 30, 60, 120, and 200 mesh sieves to obtain 30-60 mesh, 120-200 mesh and larger than 200 mesh powder particles; respectively collect particle sizes of 120-200 mesh powder particles and powder particles larger than 200 mesh to obtain parenchyma cells with different purity;

[0067] Step (3) Separation: Take the 30-60 mesh powder particles, add 10 times the volume of water, stir and let stand, collect the upper layer of floating matter...

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Abstract

The invention belongs to the field of separation of bamboo wood, and particularly relates to a method for separating parenchyma cells from fibers in bamboo wood. Currently, in industrial utilization of the bamboo wood, bamboo fibers are mainly used, and parenchyma cells are processed as waste, not only are resources wasted, but also the environment pollution problem is caused. According to the provided physical method for quickly separating the bamboo fibers and the parenchyma cells in an environment-friendly mode, the method specifically includes the following steps of 1, smashing; 2, screening; and 3, separation. By means of the separating method, the parenchyma cell extraction rate can reach 85% or so, and the purity can reach 95%. The dispersing media adopted in the method are wide in source, low in cost and easy to obtain.

Description

technical field [0001] The invention belongs to the field of bamboo separation, in particular to a method for separating parenchyma cells and fibers in bamboo. Background technique [0002] Bamboo is an important forest resource, second only to wood. Compared with wood, bamboo grows faster and can become a material in 3 to 4 years. In recent years, China's bamboo industry has developed rapidly, and its output value in 2013 has reached 122.4 billion yuan. The status of bamboo is becoming more and more important. Bamboo is composed of three parts: fibroblasts, parenchyma cells and conduction cells, among which, fibroblasts only account for about 40%, while the content of parenchyma cells is higher than that of fibrous cells, accounting for about 52% (Xu Youming, The nature of bamboo and its Research progress of resource development and utilization. Journal of Northeast Forestry University, 2003,31(5):71-77). [0003] At present, the industrial utilization of bamboo is mainl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L11/06B27J1/00B03B7/00B03B5/28B07B1/00
Inventor 余雁江泽慧王汉坤李万菊任丹
Owner INT CENT FOR BAMBOO & RATTAN
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