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A drying method for small-diameter fast-growing logs

A log and fast-growing technology, applied in the direction of drying solid materials, heating to dry solid materials, drying, etc., can solve the problems of small-diameter fast-growing logs that are easy to deform during drying, large differences in internal moisture content, and slow drying speed, etc., to achieve end integrity , High drying efficiency and fast drying speed

Active Publication Date: 2018-01-09
广西贺州恒达板业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a drying method for small-diameter fast-growing logs to solve the problems of existing small-diameter fast-growing logs, such as easy deformation, slow drying speed, large difference in internal moisture content, easy surface cracking and end cracking, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take a number of small-diameter fast-growing logs that are straight and straight. The diameter of the log is 70mm and the length is 500mm; put the log into the dryer with built-in dry bulb and wet bulb; when the moisture content of the log segment is > 55%, keep the dryer The internal dry bulb temperature is 40°C, the wet bulb temperature is 38°C, and the drying time is 240h; when the moisture content of the log segment is 40-55%, keep the dry bulb temperature in the dryer at 48°C, the wet bulb temperature is 45°C, and the drying time is 72h; When the log segment moisture content is 30-35%, keep the dry bulb temperature in the dryer at 55°C, the wet bulb temperature at 47°C, and the drying time is 48h; when the log segment moisture content is 25-30%, keep the dry bulb temperature in the dryer 57°C, wet bulb temperature 48°C, drying time 24h; when the log segment moisture content is 20-25%, keep the dry bulb temperature in the dryer at 60°C, wet bulb temperature 50°C, and...

Embodiment 2

[0025] Take a number of small-diameter fast-growing logs that are straight and straight. The diameter of the log is 50mm and the length is 300mm; put the log into the dryer with built-in dry bulb and wet bulb; when the moisture content of the log segment is >55%, keep the dryer The internal dry bulb temperature is 40°C, the wet bulb temperature is 38°C, and the drying time is 72 hours; when the moisture content of the log segment is 40-55%, keep the dry bulb temperature in the dryer at 45°C, the wet bulb temperature is 42°C, and the drying time is 24h; When the moisture content of the log segment is 30-35%, keep the dry bulb temperature in the dryer at 50°C, the wet bulb temperature at 42°C, and the drying time is 24h; when the log segment moisture content is 25-30%, keep the dry bulb temperature in the dryer 52°C, wet bulb temperature 45°C, drying time 12h; when the moisture content of the log segment is 20-25%, keep the dry bulb temperature in the dryer at 55°C, wet bulb temp...

Embodiment 3

[0027] Take a number of small-diameter fast-growing logs that are straight and straight. The diameter of the log is 55mm and the length is 350mm; put the log into the dryer with built-in dry ball and wet ball; when the moisture content of the log segment is >55%, keep the dryer The internal dry bulb temperature is 40°C, the wet bulb temperature is 38°C, and the drying time is 120h; when the log segment moisture content is 40-55%, keep the dry bulb temperature in the dryer at 45°C, the wet bulb temperature is 42°C, and the drying time is 40h; When the moisture content of the log segment is 30-35%, keep the dry bulb temperature in the dryer at 51°C, the wet bulb temperature at 43°C, and the drying time is 20h; when the log segment moisture content is 25-30%, keep the dry bulb temperature in the dryer 53°C, wet bulb temperature 46°C, drying time is 12h; when the moisture content of log segments is 20-25%, keep the dry bulb temperature in the dryer at 56°C, wet bulb temperature 49°...

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PUM

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Abstract

The invention discloses a drying method of small-diameter fast-growing timber. The method includes the steps that materials are taken and cut, and temperature-adjusting drying and humidity-adjusting treatment are performed many times. The drying method can effectively solve the problems that during existing timber drying, deformation is likely to happen, speed is low, the internal water content rate difference is large, and a surface fracture and an end fracture exist. The drying method has the beneficial effects that operation is convenient and fast, the drying speed is high, the drying efficiency is high, and ends are complete; and the small-diameter fast-growing timber can be applied to the furniture manufacturing field, and therefore application of the fast-growing small-diameter timber in the field of solid wood doors can be achieved.

Description

technical field [0001] The invention relates to the technical field of wood drying, in particular to a drying method for small-diameter fast-growing logs. Background technique [0002] At present, most solid wood materials are mainly large-diameter timber. Most of the large-diameter timber comes from virgin forest resources, and the supply of large-diameter timber is becoming less and less. In order to solve the shortage of timber supply, countries began to vigorously promote the plantation of artificial fast-growing forests. my country has become the country with the largest planting area of ​​artificial fast-growing forest and the largest stock of fast-growing wood in the world. Fast-growing timber has a short growth period and can be harvested within 4-8 years. Due to the fast growth, the diameter of the wood is relatively small, especially for a large number of spiky wood, the diameter is generally less than 10cm. These small-diameter timbers are widely used in the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K1/00B27F5/00F26B3/00
CPCB27F5/00B27K1/00F26B3/00
Inventor 涂登云黄俊刘献奇蔡国雄陶晟
Owner 广西贺州恒达板业股份有限公司
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