CN107449224B - A kind of drying of wood processing method - Google Patents
A kind of drying of wood processing method Download PDFInfo
- Publication number
- CN107449224B CN107449224B CN201710627042.1A CN201710627042A CN107449224B CN 107449224 B CN107449224 B CN 107449224B CN 201710627042 A CN201710627042 A CN 201710627042A CN 107449224 B CN107449224 B CN 107449224B
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- Prior art keywords
- microwave
- timber
- drying
- processing
- temperature
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
- F26B2210/16—Wood, e.g. lumber, timber
Abstract
The invention discloses a kind of drying of wood processing methods, are related to timber treatment technology field, comprising: (1) degreasing；(2) soda-dip；(3) predrying；(4) buffered；(5) microwave drying；Handle through the invention, the situation that cracks after the drying of wood can be significantly reduced, ensure it is dry after timber quality.
Description
Technical field
The invention belongs to timber treatment technology fields, and in particular to a kind of drying of wood processing method.
Background technique
The drying of wood is production link indispensable in woodwork process, and the highest process of energy consumption.Due to
The permeability of timber is low, makes drying of wood cycle stretch-out, and energy consumption is big, and seasoning defect drying defect increases, seasoning degrade, drying cost are high
The problems such as it is prominent.Microwave treatment can improve the permeability of timber, therefore, in the prior art using microwave treatment to timber into
Row drying can accelerate rate of drying, although microwave treatment rate of drying improves, still, the table of timber generation at this time is split
And a possibility that implosion, then dramatically increases, the wood quality decline after drying.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of drying of wood processing method is provided.
The present invention is achieved by the following technical solutions:
A kind of drying of wood processing method, comprising:
(1) degreasing: timber being put into ethanol water and is impregnated 2 hours, is then taken out, then 0.15-0.18MPa,
Temperature is under 120-125 DEG C of environment, using 500W microwave treatment 2-3min；
(2) soda-dip: by step (1), treated that timber is put into lye impregnates 2-3 hours, then takes out, drains；
(3) step (2) treated timber predrying: is subjected to a microwave treatment, the microwave energy of a microwave treatment
Amount reaches 100-120MJ/m3；
(4) buffered: by the timber of step (3) processing in the ring that temperature is 80-90 DEG C, relative air humidity is 80%
15-20min is handled in border；
(5) step (4) treated timber microwave drying: is subjected to secondary microwave processing, the microwave of secondary microwave processing
Energy reaches 120-150MJ/m3.
Further, ethyl alcohol mass fraction is 30-35% in the ethanol water.
Further, the ethanol water soaking temperature is 35-40 DEG C.
Further, the lye is made of following component by weight: sodium hydroxide 5-7, sodium citrate 1-3, chlorine
Change sodium 0.2-0.5, potassium sulfate 1-3, glycerine 2-4, deionized water 95-100.
Further, the temperature of the dipping by lye is 50-60 DEG C.
Further, a microwave treatment microwave frequency is 2450MHz, microwave treatment power is 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
The present invention has the advantage that the present invention by carrying out ungrease treatment to timber, can be got through compared with prior art
The resin canal of wood internal, expands the pit of wood internal, so that the moisture diffusion coefficients of timber are improved, the path of moisture diffusion
The speed of moisture diffusion can be significantly improved by the expansion of pit for discontinuous lumen and cell wall, then by subsequent
The processing of lye can absorb in lye wood internal single capillary inside soda-dip to wood cell
Ion component, especially potassium ion and sodium ion enable to single capillary wall construction strong under the facilitation of glycerine
Degree has the effect of increasing significantly, and toughness increases, meanwhile, fiber finer cell wall moistens expansion factor and increases, and profit rises to act on and increase, fiber finer
Cell wall toughness improves, so that timber can be in the case where quick dehydration, table is split and significant decrease a possibility that implosion, this
It invents while being dried by microwave twice, after a microwave treatment, increase buffered, can effectively delay
There is the phenomenon that shrinkage in the case where short time a large amount of dehydrations in solution timber, has significantly ensured the quality of timber after drying, this
Invention can not only quickly shorten the drying of wood time, simultaneously, it is thus also avoided that timber by the synergistic effect of various processes
Cracked phenomenon in drying process, the quality after having ensured the drying of wood.
Specific embodiment
Embodiment 1
A kind of drying of wood processing method, comprising:
(1) degreasing: timber is put into ethanol water and is impregnated 2 hours, is then taken out, is then in 0.15MPa, temperature
Under 120 DEG C of environment, using 500W microwave treatment 2min；
(2) soda-dip: by step (1), treated that timber is put into lye impregnates 2 hours, then takes out, drains；
(3) step (2) treated timber predrying: is subjected to a microwave treatment, the microwave energy of a microwave treatment
Amount reaches 100MJ/m3；
(4) buffered: by the timber of step (3) processing in the environment that temperature is 80 DEG C, relative air humidity is 80%
Handle 15min；
(5) step (4) treated timber microwave drying: is subjected to secondary microwave processing, the microwave of secondary microwave processing
Energy reaches 120MJ/m3.
Further, ethyl alcohol mass fraction is 30% in the ethanol water.
Further, the ethanol water soaking temperature is 35 DEG C.
Further, the lye is made of following component by weight: sodium hydroxide 5, sodium citrate 1, sodium chloride
0.2, potassium sulfate 1, glycerine 2, deionized water 95.
Further, the temperature of the dipping by lye is 50 DEG C.
Further, a microwave treatment microwave frequency is 2450MHz, microwave treatment power is 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
Embodiment 2
A kind of drying of wood processing method, comprising:
(1) degreasing: timber is put into ethanol water and is impregnated 2 hours, is then taken out, is then in 0.18MPa, temperature
Under 125 DEG C of environment, using 500W microwave treatment 3min；
(2) soda-dip: by step (1), treated that timber is put into lye impregnates 3 hours, then takes out, drains；
(3) step (2) treated timber predrying: is subjected to a microwave treatment, the microwave energy of a microwave treatment
Amount reaches 120MJ/m3；
(4) buffered: by the timber of step (3) processing in the environment that temperature is 90 DEG C, relative air humidity is 80%
Handle 20min；
(5) step (4) treated timber microwave drying: is subjected to secondary microwave processing, the microwave of secondary microwave processing
Energy reaches 150MJ/m3.
Further, ethyl alcohol mass fraction is 35% in the ethanol water.
Further, the ethanol water soaking temperature is 40 DEG C.
Further, the lye is made of following component by weight: sodium hydroxide 7, sodium citrate 3, sodium chloride
0.5, potassium sulfate 3, glycerine 4, deionized water 100.
Further, the temperature of the dipping by lye is 60 DEG C.
Further, a microwave treatment microwave frequency is 2450MHz, microwave treatment power is 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
Embodiment 3
A kind of drying of wood processing method, comprising:
(1) degreasing: timber is put into ethanol water and is impregnated 2 hours, is then taken out, is then in 0.16MPa, temperature
Under 122 DEG C of environment, using 500W microwave treatment 2.5min；
(2) soda-dip: by step (1), treated that timber is put into lye impregnates 2.5 hours, then takes out, drains；
(3) step (2) treated timber predrying: is subjected to a microwave treatment, the microwave energy of a microwave treatment
Amount reaches 110MJ/m3；
(4) buffered: by the timber of step (3) processing in the environment that temperature is 85 DEG C, relative air humidity is 80%
Handle 18min；
(5) step (4) treated timber microwave drying: is subjected to secondary microwave processing, the microwave of secondary microwave processing
Energy reaches 130MJ/m3.
Further, ethyl alcohol mass fraction is 32% in the ethanol water.
Further, the ethanol water soaking temperature is 38 DEG C.
Further, the lye is made of following component by weight: sodium hydroxide 6, sodium citrate 2, sodium chloride
0.3, potassium sulfate 2, glycerine 3, deionized water 98.
Further, the temperature of the dipping by lye is 55 DEG C.
Further, a microwave treatment microwave frequency is 2450MHz, microwave treatment power is 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
Comparative example 1: it is only that with the difference of embodiment 1 and is handled without step (1).
Comparative example 2: it is only that with the difference of embodiment 1 and is handled without step (2).
Comparative example 3: it is only that with the difference of embodiment 1 and is handled without step (3).
Comparative example 4: it is only that with the difference of embodiment 1 and is handled without step (4).
Test
It will be 90% having a size of 1000mm × 100mm × 200mm pine, first moisture content, embodiment and comparison is respectively adopted
Example method is dried, and every group 100, comparison:
Table 1
| Crack number | |
| Embodiment 1 | 0 |
| Embodiment 2 | 0 |
| Embodiment 3 | 0 |
| Comparative example 1 | 12 |
| Comparative example 2 | 25 |
| Comparative example 3 | 6 |
| Comparative example 4 | 3 |
As can be seen from Table 1, various processes have synergistic effect in the present invention, successively handle, can greatly drop
The low drying of wood treated cracking rate.
Claims (1)
1. a kind of drying of wood processing method characterized by comprising
(1) degreasing: timber is put into ethanol water and is impregnated 2 hours, is then taken out, then in 0.15-0.18MPa, temperature
For under 120-125 DEG C of environment, using 500W microwave treatment 2-3min；
(2) soda-dip: by step (1), treated that timber is put into lye impregnates 2-3 hours, then takes out, drains；
(3) predrying: step (2) treated timber is subjected to a microwave treatment, the microwave energy of a microwave treatment reaches
To 100-120MJ/m3；
(4) buffered: by the timber of step (3) processing in the environment that temperature is 80-90 DEG C, relative air humidity is 80%
Handle 15-20min；
(5) step (4) treated timber microwave drying: is subjected to secondary microwave processing, the microwave energy of secondary microwave processing
Reach 120-150MJ/m3；Ethyl alcohol mass fraction is 30-35% in the ethanol water；The ethanol water soaking temperature
It is 35-40 DEG C；The lye is made of following component by weight: sodium hydroxide 5-7, sodium citrate 1-3, sodium chloride 0.2-
0.5, potassium sulfate 1-3, glycerine 2-4, deionized water 95-100；The temperature of the dipping by lye is 50-60 DEG C；It is described primary micro-
Wave processing microwave frequency is 2450MHz, microwave treatment power is 2440kW/m3；The secondary microwave processing, microwave frequency are
2650MHz, microwave power 2540kW/m3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710627042.1A CN107449224B (en) | 2017-07-28 | 2017-07-28 | A kind of drying of wood processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710627042.1A CN107449224B (en) | 2017-07-28 | 2017-07-28 | A kind of drying of wood processing method |
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| CN107449224A CN107449224A (en) | 2017-12-08 |
| CN107449224B true CN107449224B (en) | 2019-09-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108844291A (en) * | 2018-05-31 | 2018-11-20 | 镇江虎瑞生物科技有限公司 | A method of utilizing microwave drying timber floor |
| CN111805646A (en) * | 2020-07-24 | 2020-10-23 | 绿材高科技术(宁波)有限公司 | Pine recombination wood manufacturing process |
| CN115122447B (en) * | 2022-07-29 | 2023-06-27 | 广东玛丁尼乐器文化股份有限公司 | Drying treatment method for wood |
| CN115383854B (en) * | 2022-09-15 | 2023-07-25 | 广东玛丁尼乐器文化股份有限公司 | Drying treatment process for wood |
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| CN1380528A (en) * | 2001-04-12 | 2002-11-20 | 厦门涌泉科技发展股份有限公司 | Degreasning drying method of masson pine plate and squared timber |
| CA2354244C (en) * | 2001-07-17 | 2004-05-25 | Weyerhaeuser Company | Method of drying wood veneer |
| CN101387471A (en) * | 2008-10-10 | 2009-03-18 | 中国林业科学研究院木材工业研究所 | Processing method for balancing moisture in wood |
| CN103286834B (en) * | 2013-07-02 | 2015-09-02 | 陈军 | Timber degreasing, de-oiling, drying integrated process |
| CN104924372B (en) * | 2015-04-07 | 2017-07-14 | 付成永 | A kind of poplar moulding and its manufacture method |
| CN105202870A (en) * | 2015-10-26 | 2015-12-30 | 王璐 | Wood drying process |
| CN106426493A (en) * | 2016-11-18 | 2017-02-22 | 淮北智淮科技有限公司 | Healthcare wooden photo frame manufacturing method |
| CN106766708A (en) * | 2016-11-30 | 2017-05-31 | 张松波 | A kind of wood chip drying process |
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