Steam heat treatment type drying method for whole bamboos

A drying method and steam technology, applied in wood treatment, wood treatment details, wood processing equipment, etc., can solve the problems of long drying cycle, no drying method, high energy consumption, etc., achieve good anti-corrosion and insect-proof functions, reduce biological characteristics, and stabilize sex enhancing effect

Inactive Publication Date: 2012-10-17
BEIJING FORESTRY MACHINERY RES INST OF STATE FORESTRY ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages and deficiencies of this technology are: low processing efficiency, high energy consumption, high cost of whole bamboo processing and no mature drying method;
The disadvantages and deficiencies of this technology are: the quality of the whole bamboo is unstable after air-drying, the weather resistance is poor, the processing time is long, and the efficiency is low.
[0005] The above two drying technologies for bamboo segments do not reflect the modern large-scale industrial processing requirements for whole bamboo drying, the required drying cycle is long, the processing efficiency is low, and they lack maturity. The technical process of whole bamboo drying

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Raw material preparation: Select 4-year-old fresh moso bamboo with a diameter of about 140mm, and cut the fresh moso bamboo into 1.2m bamboo segments. Using artificial methods, small holes are put on the bamboo joints of the bamboo segments. The size of the hole can be adjusted as required, and the diameter R of the hole in this embodiment is 8 mm.

[0042] (2) Cooking treatment: immerse the bamboo segments in a mixed solution of 0.8% sodium chloride and 1% acetic acid, raise the water temperature at normal pressure from the natural state to 90°C, heat up for 15 minutes, and boil for 4 hours.

[0043] (3) Steam heat treatment: place the whole bamboo section neatly in a steam tank, use a steam pressure of 0.18 Mpa, and a temperature of 116°C for a constant heat treatment of 90 minutes.

[0044] (4) Drying: Put the steam heat-treated bamboo section into a drying kiln with steam spray function for drying, which is divided into the following operation stages:

[0045]...

Embodiment 2

[0050] (1) Raw material preparation: Select 4-year-old fresh moso bamboo with a diameter of about 140mm, and cut the fresh moso bamboo into 1.2m bamboo segments. Using artificial methods, small holes are put on the bamboo joints of the bamboo segments. The size of the hole can be adjusted as required, and the diameter R of the hole is 8mm.

[0051] (2) Cooking treatment: Immerse the bamboo segments in a mixed solution of 0.8% sodium chloride and 1% acetic acid, raise the water temperature at normal pressure from the natural state to 100°C, heat up for 20 minutes, and boil for 5 hours.

[0052] (3) Steam heat treatment: place the whole bamboo segment neatly in a steam tank, use a steam pressure of 0.20Mpa, and a temperature of 120°C for a constant heat treatment of 90 minutes.

[0053] (4) Drying: Put the steam heat-treated bamboo section into a drying kiln with steam spray function for drying, which is divided into the following stages:

[0054] a. Dry accumulation of the wh...

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PUM

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Abstract

The invention discloses a steam heat treatment type drying method for whole bamboos. The method comprises the following steps: stewing bamboo sections with bamboo joints or bamboo walls which have been perforated in a mixed solution of sodium chloride and acetic acid at a temperature of 100 DEG C under normal pressure; then trimly placing the whole bamboo sections in a steam tank and carrying out treatment at a temperature of 110 to 140 DEG C under a vapor pressure of 0.14 to 0.25 MPa; and finally, carrying out low temperature drying on the bamboo sections in a steam dry kiln which has a steam injection function and carrying out humidity elimination on the dry kiln until the water content in the bamboo sections reaches 10 to 18%. With above-mentioned treatment, the whole bamboos have better drying and anti-cracking effects, improved stability and weatherability, enhanced strength and a prolonged service life.

Description

technical field [0001] The invention belongs to the field of bamboo modification methods, in particular to a steam heat treatment type whole bamboo drying method. Background technique [0002] my country is rich in bamboo resources and is the world's largest bamboo resource country. Bamboo has the characteristics of rapid growth, short rotation period, hollow bamboo joints, strong shear resistance, good rigidity, wear resistance, and excellent physical properties. Whole bamboo refers to the bamboo stalks that have been cut down without processing or only undergoing simple processing, such as not destroying the original cross-sectional structure of the bamboo, but just cutting it into a suitable length of bamboo, which can be used for construction, industrial and agricultural production, decoration and handicraft materials. At present, the utilization of bamboo in my country is mainly recombination utilization, and there are few studies on the deep processing and utilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/00B27K5/04B27K3/52
Inventor 傅万四周建波刘伟何合高赵章荣刘星雨范利海韩望
Owner BEIJING FORESTRY MACHINERY RES INST OF STATE FORESTRY ADMINISTRATION
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