CN107520932A - Poplar hot wax are dried and high-temperature heat treatment integral process - Google Patents
Poplar hot wax are dried and high-temperature heat treatment integral process Download PDFInfo
- Publication number
- CN107520932A CN107520932A CN201710940973.7A CN201710940973A CN107520932A CN 107520932 A CN107520932 A CN 107520932A CN 201710940973 A CN201710940973 A CN 201710940973A CN 107520932 A CN107520932 A CN 107520932A
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- Prior art keywords
- timber
- poplar
- dried
- heat treatment
- temperature
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/06—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by burning or charring, e.g. cutting with hot wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Poplar hot wax are dried and high-temperature heat treatment integral process, using industrial paraffin as medium, first under conditions of 100 ~ 120 DEG C, poplar is dried processing to moisture content for 6% 7% when, proceed by heating charing process, carbonization temperature is 180 ~ 200 DEG C, and programming rate is controlled at 15 ~ 20 DEG C per hour.The present invention is using industrial paraffin as dry and high-temperature heat treatment（Charing）Medium, timber is being dried and high temperature is thermally-denatured simultaneously, paraffin infiltration is into timber.On the one hand, dry and heat modification technical process is continuous, can effectively reduce energy loss and production cost, on the other hand, compared with conventional heat modification technique, reduce further the water imbibition of timber, add the dimensional stability of timber；Simultaneously as sealing process of the paraffin to timber space, the further water imbibition for reducing timber.
Description
Technical field
The invention belongs to wood processing technique field, and in particular to a kind of poplar hot wax are dried and high-temperature heat treatment integration
Technique.
Background technology
Domestic traditional charring process needs timber processing is dried in dry kiln first, when moisture content drops to
After less than 10%, it is then transferred to carbonizing kiln and carries out charing process.Timber has cooling first in transfer process, is needed in charing
Will heat temperature raising again, cause the waste of the energy, while also increase the process of loading of kiln kiln discharge, increase production cost, extend production
Cycle.
Timber high-temperature heat treatment（Charing process）Refer in protective gas environment, it is right at a temperature of 160~250 DEG C
Timber carries out short-term pyrolysis processing, can improve the dimensional stability, durability and color of timber.Wood property after heat treatment
Change situation, it is heavily dependent on the difference of timber varieties of trees and the difference of process conditions.Generally heat-treated wood is referred to as
Deep charring, sheet material is packed for after deinsectization is heat-treated in common dry wood, superficial charring wood or inlet and outlet quarantine to be different from.
In the past 10 years, European Holland, France, Germany and Finland.Have been realized in the industrial applications of heat_treated wood technology.This
Outside, the country such as Japan, Canada and China Taiwan, have also carried out many research, and achieve to heat-treated wood
Certain achievement.Heat treatment can improve the dimensional stability of timber, remove or sustained release wood internal stress, reason are, hemicellulose
After chemical change occurs for element particularly polysaccharide aldehyde glycosides, become weak hygroscopic monomers；In addition, hydroxyl is mutually tied in cellulose molecular chain
Close and form hydrogen bond.The possible cause that heat treatment improves wood preservation performance is that in heat treatment process, wood components are changed
Become, cut off the nutriment source needed for mushroom existence；Meanwhile the reduction of moisture content inhibits fungus grown, makes rotproofness
It is improved.And the change of heat-treated wood color, mainly changed by compound, hemicellulose, lignin, some extracting chemical combination
The degraded of thing causes.At present, China mainly carbonized with the mode of kiln drying formula, in carbonization process using saturated vapor come every
Anoxybiotic gas, so, need to consume amount of heat in processing procedure.In the market carbonizing kiln quality is very different, causes part to carbonize
Timber afterwards is uneven due to uneven and the caused color and luster and carbonization quality of kiln temperature.In addition, the heating of carbonizing kiln
And the circulatory system, configuration power are much larger than common dry kiln, if to realize the technique for drying charing integration, can cause to do
The increase of dry cost.Timber after conventional charing, water imbibition has declined, but due to the presence of timber micropore, still has
Certain water imbibition., in outdoor application, its antiseptic effect and stability still need to further improve for it.
The content of the invention
The technical problem of solution：The present invention provides a kind of poplar hot wax and dried and high-temperature heat treatment integral process, the work
Skill can increase the dimensional stability of timber and reduce the water imbibition of timber.
Technical scheme：Poplar hot wax are dried and high-temperature heat treatment integral process, step are：Using industrial paraffin as Jie
Matter, first under conditions of 100 ~ 120 DEG C, to poplar be dried processing to moisture content be 6%-7% when, proceed by heating charcoal
Change, carbonization temperature is 160 DEG C ~ 200 DEG C, and programming rate is controlled at 15 ~ 20 DEG C per hour.
Preferably, the temperature of above-mentioned drying process is 100 DEG C.
Preferably, above-mentioned timber is thickness 30mm poplar.
Preferably, above-mentioned poplar initial aqueous rate is 90%-120%, and it is 90 ~ 110 small to dry to processing time during 6%-7%
When.
Beneficial effect：The present invention, as the medium dried with charing process, is dried using industrial paraffin to timber
Thermally-denatured simultaneously with high temperature, paraffin infiltration is into timber.On the one hand, dry and heat modification technical process is continuous, Ke Yiyou
Effect reduces energy loss and production cost, on the other hand, compared with conventional heat modification technique, reduce further the suction of timber
It is water-based, add the dimensional stability of timber；Simultaneously as sealing process of the paraffin to timber space, further to reduce wood
The water imbibition of material.Compared with untreated material, waterabsorbing capacity of wood is 1/3rd of untreated material to arrive a quarter.Meanwhile with not
Processing material is compared, and in same humidity environment, the equilibrium moisture content of timber declines, and hygroscopicity declines, the increase of timber stability.Production
Product appearance is surrounded by paraffin, and timber wetability declines, and moisture is reduced into wood internal chance, and the protective effect to timber increases
Add.Timber particularly suitable for outdoor.Timber after Treating Cuttings with Paraffin Wax does not pollute.Conventional steam and hot water are dried as thermal source
Timber, the consumption of water and the consumption of energy are bigger, and hot wax are dry and heat treatment, and heat utilization efficiency is higher, without the generation of waste water,
More environmentally-friendly energy-conservation.In carbonization process, hot wax starvation, it is not necessary to saturated vapor protection when conventional kiln drying (kd) carbonizes, subtract
The use of few steam, reaches the effect further saved.
Embodiment
Following examples only technical concepts and features to illustrate the invention, its object is to allow person skilled in the art
It is that can understand present disclosure and implement according to this, it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent transformation or modification that Spirit Essence is done, should all be included within the scope of the present invention.
Embodiment 1
Thickness is 30mm poplar, and initial aqueous rate is 113%.Paraffin initial temperature is 60 DEG C, and programming rate is 5 DEG C/h, heating
During to 100 DEG C, stop heating, timber is dried processing.To prevent timber crack, drying process takes temperature fluctuation control
System, after 4 hours are using 100 DEG C of drying process, then temperature is adjusted to 80 DEG C and carries out thickness balancing water contents.Drying time 92
Hour or so, moisture content reaches 7%.Then paraffin temperature is risen to 160 DEG C from 100 DEG C, programming rate is 15 DEG C/h.Work as temperature
After reaching 160 DEG C, it is 1 hour to be kept for processing time, and the water absorption rate for handling material is 66%, and processing time is 2 hours, handles material
Water absorption rate is 63%；Processing time is 3 hours, and the water absorption rate for handling material is 60%.
Embodiment 2
Thickness is 30mm poplar, and initial aqueous rate is 113%.Paraffin initial temperature is 60 DEG C, and programming rate is 5 DEG C/h, heating
During to 100 DEG C, stop heating, timber is dried processing.To prevent timber crack, drying process takes temperature fluctuation control
System, after 4 hours are using 100 DEG C of drying process, then temperature is adjusted to 80 DEG C and carries out thickness balancing water contents.Drying time 92
Hour or so, moisture content reaches 7%.Then paraffin temperature is risen to 180 DEG C from 100 DEG C, programming rate is 15 DEG C/h.Work as temperature
After reaching 180 DEG C, it is 1 hour to be kept for processing time, and the water absorption rate for handling material is 62%, and processing time is 2 hours, handles material
Water absorption rate is 56%；Processing time is 3 hours, and the water absorption rate for handling material is 53%.
Embodiment 3
Thickness is 30mm poplar, and initial aqueous rate is 113%.Paraffin initial temperature is 60 DEG C, and programming rate is 5 DEG C/h, heating
During to 100 DEG C, stop heating, timber is dried processing.To prevent timber crack, drying process takes temperature fluctuation control
System, after 4 hours are using 100 DEG C of drying process, then temperature is adjusted to 80 DEG C and carries out thickness balancing water contents.Drying time 92
Hour or so, moisture content reaches 7%.Then paraffin temperature is risen to 200 DEG C from 100 DEG C, programming rate is 15 DEG C/h.Work as temperature
After reaching 200 DEG C, it is 1 hour to be kept for processing time, and the water absorption rate for handling material is 56%, and processing time is 3 hours, handles material
Water absorption rate is 52%；Processing time is 2 hours, and the water absorption rate for handling material is 50%.
The water absorption rate of untreated material is 205%, and after treatment, the water absorption rate of poplar is decreased obviously.
Claims (4)
1. poplar hot wax are dried and high-temperature heat treatment integral process, it is characterised in that step is：Using industrial paraffin as Jie
Matter, first under conditions of 100 ~ 120 DEG C, to poplar be dried processing to moisture content be 6%-7% when, proceed by heating charcoal
Change, carbonization temperature is 160 DEG C ~ 200 DEG C, and programming rate is controlled at 15 ~ 20 DEG C per hour.
2. poplar hot wax are dried and high-temperature heat treatment integral process according to claim 1, it is characterised in that the drying
The temperature of processing is 100 DEG C.
3. poplar hot wax are dried and high-temperature heat treatment integral process according to claim 1, it is characterised in that the timber
For thickness 30mm poplar.
4. poplar hot wax are dried and high-temperature heat treatment integral process according to claim 1, it is characterised in that poplar is initial
Moisture content is 90%-120%, and it is 90 ~ 110 hours to dry to processing time during 6%-7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940973.7A CN107520932A (en) | 2017-10-11 | 2017-10-11 | Poplar hot wax are dried and high-temperature heat treatment integral process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710940973.7A CN107520932A (en) | 2017-10-11 | 2017-10-11 | Poplar hot wax are dried and high-temperature heat treatment integral process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107520932A true CN107520932A (en) | 2017-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710940973.7A Pending CN107520932A (en) | 2017-10-11 | 2017-10-11 | Poplar hot wax are dried and high-temperature heat treatment integral process |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227839A (en) * | 2018-10-19 | 2019-01-18 | 南京林业大学 | A kind of bamboo wood is dry and heat treatment method |
| CN113246246A (en) * | 2021-06-17 | 2021-08-13 | 北京林业大学 | Small-diameter wood liquid phase drying-heat treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60217058A (en) * | 1983-12-14 | 1985-10-30 | Kunio Watanabe | Cutting and molding method of natural wood block for paving road surface and floor surface |
| CN1876343A (en) * | 2006-07-13 | 2006-12-13 | 中南林业科技大学 | High temperature water heat processing method for timber |
| CN101898901A (en) * | 2010-06-12 | 2010-12-01 | 北京林业大学 | Carbonized wood curing technology |
| CN105415470A (en) * | 2015-11-30 | 2016-03-23 | 国家林业局竹子研究开发中心 | Method for accurately regulating and controlling bamboo wood color |
-
2017
- 2017-10-11 CN CN201710940973.7A patent/CN107520932A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60217058A (en) * | 1983-12-14 | 1985-10-30 | Kunio Watanabe | Cutting and molding method of natural wood block for paving road surface and floor surface |
| CN1876343A (en) * | 2006-07-13 | 2006-12-13 | 中南林业科技大学 | High temperature water heat processing method for timber |
| CN101898901A (en) * | 2010-06-12 | 2010-12-01 | 北京林业大学 | Carbonized wood curing technology |
| CN105415470A (en) * | 2015-11-30 | 2016-03-23 | 国家林业局竹子研究开发中心 | Method for accurately regulating and controlling bamboo wood color |
Non-Patent Citations (2)
| Title |
|---|
| 张英杰等: "基于石蜡导热介质的毛白杨热处理工艺优化", 《西北林学院学报》 * |
| 郝华涛: "《木材干燥技术》", 30 June 2002, 高等教育出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227839A (en) * | 2018-10-19 | 2019-01-18 | 南京林业大学 | A kind of bamboo wood is dry and heat treatment method |
| CN113246246A (en) * | 2021-06-17 | 2021-08-13 | 北京林业大学 | Small-diameter wood liquid phase drying-heat treatment method |
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Application publication date: 20171229 |
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