Treatment device for increasing drying rate of timber and method for drying timber by utilizing processing device

A wood treatment and wood drying technology, which is applied in the direction of promoting the drying of solid materials, such as preliminary treatment, drying of solid materials, and drying, can solve the problems of poor drying quality, large equipment investment, and low drying rate.

Active Publication Date: 2015-03-18
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods pretreat the wood to a certain extent, which is conducive to the opening of the internal passages of the wood, but due to the large investment in equipment and the inabi

Method used

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  • Treatment device for increasing drying rate of timber and method for drying timber by utilizing processing device
  • Treatment device for increasing drying rate of timber and method for drying timber by utilizing processing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] Take fir wood segments with dimensions of 1000mm (length) × 200mm (width) × 20mm (thickness) for ultrasonic pretreatment to open up the moisture channel inside the wood and shorten the drying time for subsequent wood drying treatment.

[0117] In the embodiment of the present invention, the thickness of the wood is 2 cm as an example, other woods with a thickness of 1-10 cm are also suitable for the present invention, and the thickness of the wood is preferably 2-5 cm.

[0118] 1. Open the liquid inlet 11, and the treatment liquid (i.e. water) 4 is poured into the cavity 14 inside the wood treatment chamber through the liquid inlet 11. The highest position of the ultrasonic transducer is flush with or slightly higher than the highest position of the ultrasonic transducer;

[0119] In addition to using water, the treatment liquid in the embodiment of the present invention can also use an alkaline solution, the mass percent concentration of the alkaline solution is 0.01-1...

Embodiment 2

[0128] Except that the ultrasonic pretreatment time is 1 h, the rest are the same as in Example 1.

Embodiment 3

[0130] Except that the ultrasonic pretreatment time is 1.5h, the others are the same as in Example 1.

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Abstract

The invention discloses a pretreatment device and a treatment method for increasing a drying rate of timber. The device comprises a timber treatment chamber having a cavity, an ultrasonic treatment system and a temperature system. The method is characterized in that timber to be dried is pretreated ultrasonically, so that extracts inside the timber can be separated through a solution, a pit membrane and partial thin-wall tissues inside the timber are broken, the permeability of the timber is improved, water channels inside the timber are gotten through, the drying quality of the timber is improved, the drying defect in the drying process is reduced, and the drying period is shortened; moreover, the pretreatment device is simple and convenient to operate, the treatment process condition (ultrasonic power, frequency and time) is controllable, and the pretreatment device and the treatment method are suitable for treating various kinds of timber.

Description

technical field [0001] The invention relates to a pretreatment device and a treatment method for wood drying, in particular to a pretreatment device for increasing the drying rate of wood and a method for treating wood with the device, belonging to the technical field of wood drying treatment. Background technique [0002] The energy consumption of wood drying process accounts for about 40% to 70% of the total energy consumption of wood product production. Correct and reasonable drying treatment of wood is not only the key to ensure the quality of wood products, but also an important means of rational utilization and saving of wood. However, for many hard broad-leaved materials, there are many inclusions and poor permeability. For fast-growing materials, the growth stress is relatively large, and the multi-stress wood has high moisture content and uneven distribution. The moisture content of the heartwood is higher than that of the sapwood. If Directly adopting the traditio...

Claims

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Application Information

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IPC IPC(8): F26B1/00
Inventor 何正斌赵紫剑杨飞沙汀鸥张宇伊松林
Owner BEIJING FORESTRY UNIVERSITY
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