CN107449224A - A kind of drying of wood processing method - Google Patents

A kind of drying of wood processing method Download PDF

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Publication number
CN107449224A
CN107449224A CN201710627042.1A CN201710627042A CN107449224A CN 107449224 A CN107449224 A CN 107449224A CN 201710627042 A CN201710627042 A CN 201710627042A CN 107449224 A CN107449224 A CN 107449224A
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China
Prior art keywords
microwave
drying
timber
processing
processing method
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Application number
CN201710627042.1A
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Chinese (zh)
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CN107449224B (en
Inventor
腾博
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Funan Tengbo Crafts Co Ltd
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Funan Tengbo Crafts Co Ltd
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Classifications

    • 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
    • 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 method, is related to timber treatment technology field, including：（1）Degreasing；（2）Soda-dip；（3）It is predrying；（4）Buffered；（5）Microwave drying；Handled by the present invention, the situation that ftractures after the drying of wood can be significantly reduced, ensure the quality of dried timber.

Description

A kind of drying of wood processing method
Technical field
The invention belongs to timber treatment technology field, and in particular to a kind of drying of wood processing method.
Background technology
The drying of wood is production link indispensable in woodwork process, and energy consumption highest process.Due to The permeability of timber is low, makes drying of wood cycle stretch-out, and power consumption is big, and seasoning defect drying defect increases, seasoning degrade, drying cost are high The problems such as protrude.Microwave treatment can improve the permeability of timber, and therefore, timber is entered using microwave treatment in the prior art Row drying, rate of drying can be accelerated, although microwave treatment rate of drying improves, still, now timber generation table splits And the possibility of implosion then dramatically increases, dried wood quality declines.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of drying of wood processing method.
The present invention is achieved by the following technical solutions：
A kind of drying of wood processing method, including：
（1）Degreasing：Timber is put into ethanol water and soaked 2 hours, is then taken out, then in 0.15-0.18MPa, temperature For under 120-125 DEG C of environment, using 500W microwave treatments 2-3min；
（2）Soda-dip：By step（1）Timber after processing is put into immersion 2-3 hours in alkali lye, then takes out, drains；
（3）It is predrying：By step（2）Timber after processing carries out a microwave treatment, and the microwave energy of a microwave treatment reaches To 100-120MJ/m3；
（4）Buffered：By step（3）The timber of processing is in the environment that temperature is 80-90 DEG C, relative air humidity is 80% Handle 15-20min；
（5）Microwave drying：By step（4）Timber after processing carries out secondary microwave processing, the microwave energy of secondary microwave processing Reach 120-150MJ/m3.
Further, ethanol mass fraction is 30-35% in the ethanol water.
Further, the ethanol water soaking temperature is 35-40 DEG C.
Further, the alkali lye is made up 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 be 2450MHz, microwave treatment power be 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
The present invention has advantages below compared with prior art：The present invention can be got through by carrying out ungrease treatment to timber The resin canal of wood internal, expand the pit of wood internal, so as to improve the moisture diffusion coefficients of timber, the path of moisture diffusion For discontinuous lumen and cell wall, by the expansion of pit, the speed of moisture diffusion can be significantly improved, then by follow-up The processing of alkali lye, inside soda-dip to wood cell, wood internal single capillary can be absorbed in alkali lye Ion component, especially potassium ion and sodium ion, under the facilitation of glycerine, enable to single capillary wall construction strong The tool effect of increasing significantly is spent, toughness increases, meanwhile, the profit expansion factor increase of fiber finer cell wall, moisten effect of rising and increase, fiber finer Cell wall toughness is improved, so that timber can be in the case of quick dehydration, table splits to be significantly reduced with the possibility of implosion, this Processing is dried by microwave twice simultaneously in invention, after a microwave treatment, increases buffered, can effectively delay There is the phenomenon of shrinkage in the case of 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 synergy of various processes Cracked phenomenon in drying process, has ensured the quality after the drying of wood.
Embodiment
Embodiment 1
A kind of drying of wood processing method, including：
（1）Degreasing：Timber is put into ethanol water and soaked 2 hours, is then taken out, then in 0.15MPa, temperature 120 Under DEG C environment, using 500W microwave treatments 2min；
（2）Soda-dip：By step（1）Timber after processing, which is put into alkali lye, to be soaked 2 hours, is then taken out, is drained；
（3）It is predrying：By step（2）Timber after processing carries out a microwave treatment, and the microwave energy of a microwave treatment reaches To 100MJ/m3；
（4）Buffered：By step（3）The timber of processing is handled in the environment that temperature is 80 DEG C, relative air humidity is 80% 15min；
（5）Microwave drying：By step（4）Timber after processing carries out secondary microwave processing, the microwave energy of secondary microwave processing Reach 120MJ/m3.
Further, ethanol mass fraction is 30% in the ethanol water.
Further, the ethanol water soaking temperature is 35 DEG C.
Further, the alkali lye is made up of following component by weight：Sodium hydroxide 5, sodium citrate 1, sodium chloride 0.2nd, 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 be 2450MHz, microwave treatment power be 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
Embodiment 2
A kind of drying of wood processing method, including：
（1）Degreasing：Timber is put into ethanol water and soaked 2 hours, is then taken out, then in 0.18MPa, temperature 125 Under DEG C environment, using 500W microwave treatments 3min；
（2）Soda-dip：By step（1）Timber after processing, which is put into alkali lye, to be soaked 3 hours, is then taken out, is drained；
（3）It is predrying：By step（2）Timber after processing carries out a microwave treatment, and the microwave energy of a microwave treatment reaches To 120MJ/m3；
（4）Buffered：By step（3）The timber of processing is handled in the environment that temperature is 90 DEG C, relative air humidity is 80% 20min；
（5）Microwave drying：By step（4）Timber after processing carries out secondary microwave processing, the microwave energy of secondary microwave processing Reach 150MJ/m3.
Further, ethanol mass fraction is 35% in the ethanol water.
Further, the ethanol water soaking temperature is 40 DEG C.
Further, the alkali lye is made up of following component by weight：Sodium hydroxide 7, sodium citrate 3, sodium chloride 0.5th, 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 be 2450MHz, microwave treatment power be 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
Embodiment 3
A kind of drying of wood processing method, including：
（1）Degreasing：Timber is put into ethanol water and soaked 2 hours, is then taken out, then in 0.16MPa, temperature 122 Under DEG C environment, using 500W microwave treatments 2.5min；
（2）Soda-dip：By step（1）Timber after processing, which is put into alkali lye, to be soaked 2.5 hours, is then taken out, is drained；
（3）It is predrying：By step（2）Timber after processing carries out a microwave treatment, and the microwave energy of a microwave treatment reaches To 110MJ/m3；
（4）Buffered：By step（3）The timber of processing is handled in the environment that temperature is 85 DEG C, relative air humidity is 80% 18min；
（5）Microwave drying：By step（4）Timber after processing carries out secondary microwave processing, the microwave energy of secondary microwave processing Reach 130MJ/m3.
Further, ethanol mass fraction is 32% in the ethanol water.
Further, the ethanol water soaking temperature is 38 DEG C.
Further, the alkali lye is made up of following component by weight：Sodium hydroxide 6, sodium citrate 2, sodium chloride 0.3rd, 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 be 2450MHz, microwave treatment power be 2440kW/m3.
Further, the secondary microwave processing, microwave frequency 2650MHz, microwave power 2540kW/m3.
Comparative example 1：Differed only in embodiment 1 without step（1）Processing.
Comparative example 2：Differed only in embodiment 1 without step（2）Processing.
Comparative example 3：Differed only in embodiment 1 without step（3）Processing.
Comparative example 4：Differed only in embodiment 1 without step（4）Processing.
Experiment
By the pine that size is 1000mm × 100mm × 200mm, first moisture content is 90%, and embodiment and comparative example side is respectively adopted Processing is dried in method, every group 100, contrasts：
Table 1
Ftracture 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 synergy in the present invention, handle successively, can greatly reduce wood Cracking rate after material drying process.

Claims (7)

  1. A kind of 1. drying of wood processing method, it is characterised in that including：
    （1）Degreasing：Timber is put into ethanol water and soaked 2 hours, is then taken out, then in 0.15-0.18MPa, temperature For under 120-125 DEG C of environment, using 500W microwave treatments 2-3min；
    （2）Soda-dip：By step（1）Timber after processing is put into immersion 2-3 hours in alkali lye, then takes out, drains；
    （3）It is predrying：By step（2）Timber after processing carries out a microwave treatment, and the microwave energy of a microwave treatment reaches To 100-120MJ/m3；
    （4）Buffered：By step（3）The timber of processing is in the environment that temperature is 80-90 DEG C, relative air humidity is 80% Handle 15-20min；
    （5）Microwave drying：By step（4）Timber after processing carries out secondary microwave processing, the microwave energy of secondary microwave processing Reach 120-150MJ/m3.
  2. A kind of 2. drying of wood processing method according to claim 1, it is characterised in that ethanol in the ethanol water Mass fraction is 30-35%.
  3. A kind of 3. drying of wood processing method according to claim 2, it is characterised in that the ethanol water immersion temperature Spend for 35-40 DEG C.
  4. A kind of 4. drying of wood processing method according to claim 1, it is characterised in that the alkali lye by weight by Following component is made：Sodium hydroxide 5-7, sodium citrate 1-3, sodium chloride 0.2-0.5, potassium sulfate 1-3, glycerine 2-4, deionization Water 95-100.
  5. 5. a kind of drying of wood processing method according to claim 4, it is characterised in that the temperature of the dipping by lye is 50-60℃。
  6. A kind of 6. drying of wood processing method according to claim 1, it is characterised in that a microwave treatment microwave Frequency is 2450MHz, microwave treatment power is 2440kW/m3.
  7. A kind of 7. drying of wood processing method according to claim 1, it is characterised in that the secondary microwave processing, it is micro- Wave frequency rate is 2650MHz, microwave power 2540kW/m3.
CN201710627042.1A 2017-07-28 2017-07-28 A kind of drying of wood processing method Active CN107449224B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN115122447A (en) * 2022-07-29 2022-09-30 广东玛丁尼乐器文化股份有限公司 Drying treatment method for wood
CN115383854A (en) * 2022-09-15 2022-11-25 广东玛丁尼乐器文化股份有限公司 Drying treatment process for wood

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6401356B1 (en) * 2001-07-17 2002-06-11 Weyerhaeuser Company Method of drying wood veneer
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
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
CN103286834A (en) * 2013-07-02 2013-09-11 陈军 Integrated process for degreasing, deoiling and drying woods
CN104924372A (en) * 2015-04-07 2015-09-23 付成永 White poplar wood frame strip and manufacturing method thereof
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6401356B1 (en) * 2001-07-17 2002-06-11 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
CN103286834A (en) * 2013-07-02 2013-09-11 陈军 Integrated process for degreasing, deoiling and drying woods
CN104924372A (en) * 2015-04-07 2015-09-23 付成永 White poplar wood frame strip and manufacturing method thereof
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN115122447A (en) * 2022-07-29 2022-09-30 广东玛丁尼乐器文化股份有限公司 Drying treatment method for wood
CN115383854A (en) * 2022-09-15 2022-11-25 广东玛丁尼乐器文化股份有限公司 Drying treatment process for wood

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