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High-efficient method for removing pine resin

A technology of pine wood and resin, which is applied in the field of high-efficiency degreasing of wood. It can solve the problems of chemical environmental pollution, darkening of degreasing wood, and large investment in equipment. It achieves the effects of short processing time, large degreasing depth, and low equipment investment.

Inactive Publication Date: 2011-11-16
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the acid degreasing method and the alkaline degreasing method have defects such as large equipment investment, high degreasing cost, shallow degreasing depth, and environmental pollution caused by chemicals used in degreasing.
However, high-temperature drying degreasing has defects such as long processing time, darkening of the degreasing material, and low degreasing rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Select a masson pine plate with a thickness of 50mm, a width of 100mm, and a length of 200mm (initial moisture content 80%), and use a drill bit with a diameter of 1mm to drill along the width direction of the plate at the geometric center of the side of the plate (where the length and height are located) A reserved hole with a depth of 20mm, and then place the masson pine plate in a resonant cavity heater type industrial microwave oven, then insert the optical fiber temperature sensor into the reserved hole, turn on the microwave generator to heat the wood, and the microwave radiation power is 4KW ( That is, the radiation intensity is 4000KW / m3 of wood), the microwave frequency is 2450MHz, and the masson pine board is heated to above 100°C by continuous microwave radiation, so that the internal temperature is controlled at 105-110°C. After the temperature of the pine wood reaches above 100°C Control the microwave radiation time to 6min. Immediately (generally no more t...

Embodiment 2

[0016] Select masson pine wood with a thickness of 50mm, a width of 100mm, a length of 200mm, and an initial moisture content of 60%, and place it in a resonant cavity heater type industrial microwave oven, turn on the microwave generator to heat the wood, and the microwave radiation power is 3KW ( That is, the radiation intensity is 3000KW / m3 wood), and the microwave frequency is 2450MHz. Use intermittent microwave radiation to heat the masson pine wood to above 100°C, use an infrared temperature measurement system to detect the surface temperature of the masson pine wood, and control the surface temperature at 100-105°C, and control the microwave radiation time after the temperature reaches above 100°C It is 7min. Immediately after the microwave treatment, the microwave degreasing material is immersed in the degreasing solution in the dipping tank for immersion degreasing treatment. The degreasing solution is composed of 98.1% water, 1.5% sodium bicarbonate and 0.4% sodium b...

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Abstract

The present invention discloses a method for efficiently removing pine resin. The method comprises the steps of executing heating procession to pipe with microwave for removing the resin at the inner part of pipe to the surface layer and surface of wood; immersing the pipe which is executed with microwave heating procession into resin-removing liquid for infusing and removing resin, and finally washing and drying. The resin removing method of the invention has the advantages of short processing time, large depth of resin removing, high resin removing efficiency, low resin removing cost, simple resin removing device, retained primitive color of wood, etc.

Description

technical field [0001] The invention relates to a processing method for wood, in particular to a processing method for efficient degreasing of wood. Background technique [0002] Pine has the advantages of straight trunk, clear and beautiful texture, and elegant color, etc. It is widely planted in my country, but pine is rich in rosin, which is easy to overflow during processing and use, which seriously affects its processing, use and decorative performance, and restricts its practicality. High value-added utilization of wood products. Therefore, degreasing treatment is an important technical measure to improve the properties of pine wood and increase the added value of pine wood products. [0003] At present, the commonly used pine degreasing methods include acid degreasing, alkaline degreasing, and high-temperature drying degreasing. Among them, the acid degreasing method and the alkaline degreasing method have defects such as large equipment investment, high degreasing c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/00B27K3/32
Inventor 李贤军刘元傅峰吴义强彭万喜胡进波胡云楚袁光明杨霞
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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