CN101497799B - Superhigh temperature wood carbonization method - Google Patents
Superhigh temperature wood carbonization method Download PDFInfo
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- CN101497799B CN101497799B CN2008100332232A CN200810033223A CN101497799B CN 101497799 B CN101497799 B CN 101497799B CN 2008100332232 A CN2008100332232 A CN 2008100332232A CN 200810033223 A CN200810033223 A CN 200810033223A CN 101497799 B CN101497799 B CN 101497799B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The invention discloses an ultra-temperature wood dry distillation method which is characterized by comprising the following steps: A. placing wood in a dry distillation tank, heating the wood to 100-120 DEG C, and spraying steam on the surface of the wood and keeping for 2-3h; B. drying the wood to enable the water content of the wood to reach 3-4 percent; C. heating the wood to 150-200 DEG C and keeping for 8-10h; D. lowering the temperature in the dry distillation tank to 100 DEG C below, and spraying steam on the surface of the wood during the process. The method can be used for producing carbonized wood.
Description
Technical field
The present invention relates to a kind of superhigh temperature wood carbonization method.
Background technology
Along with the improvement with living conditions that improves constantly of living standards of the people, timber floor has obtained extensive and general use as a kind of floor pavement material.At present, known timber floor can be divided into substantially: solid wooden floor board, solid wooden compound floor and consolidated floor three major types, wherein composite floor board again can be according to the different broad varietys that occurred of its matrix material and structure for these.Timber is as a kind of natural ecological environment material nd; Compare with other material, often have special vision, sense of touch, acoustics and conditioning characteristic, still; Be associated therewith; Timber-work also can produce drying shrinkage, bulking phenomenon along with the difference of environment for use, and under conditions such as certain humiture, and most timber are rotten easily and damaged by worms.This also just wood floors in use change the major cause that produces defective owing to material, structure, production technique and environment for use.
Carbonized wood technology (high-temperature heat treatment wood technologies) is one of emerging technology of wood processing field.Carbonized wood is since coming out; With a series of outstanding advantages such as its good biodurable, weathering resistance, dimensional stability and safety, environmental protection; Be applied to indoor and outdoor just increasingly extensively and decorate wooden staircase, many aspects such as park facility and sauna inner facility.
Summary of the invention
The objective of the invention is provides a kind of superhigh temperature wood carbonization method of producing carbonized wood in order to solve deficiency of the prior art.
For realizing above purpose, the present invention realizes through following technical scheme:
A kind of superhigh temperature wood carbonization method is characterized in that, may further comprise the steps:
A. timber is positioned in the charing jar, timber is heated to 100～120 ℃, and, kept 2～4 hours to wood surface injection water steam;
B. desiccated wood makes moisture content reach 3～4%;
C. timber is being heated to 150 ℃～200 ℃, was keeping 8-10 hour;
D. reduce below the temperature to 100 ℃ in the charing jar, in this process, to wood surface injection water steam.Wherein, described step B comprises: a, stop heating, timber was placed 20-40 minute; B, with vacuumizing in the vacuum charing jar, make that vacuum tightness is 0.015-0.05MPa in the charing jar; C, when the timber core temperature reaches 40-55 ℃, with returning to normal pressure in the charing jar, recover in the normal pressure process, to wood surface injection water steam, reach 3～4% to moisture content.
Wherein, repeating step a, b reach 3～4% until the water ratio of timber.
Wherein, in the described steps A, during heating, make the temperature in the vacuum charing jar be reached for 90-120 ℃, kept 1.5-3 hour.
Wherein, among the described step D, reduce below the temperature to 100 ℃ in the charing jar after, timber was placed 2-3 hour.
Wherein, in the described steps A, during heating in the charing jar injection water steam, purpose is to improve the ventilation property of timber, remedy of casehardening phenomenon, the higher seeds of some resin content also can play certain fat abstraction after the decatize of pre-heating stage is handled.
Among described steps A and the B, adopt vacuum-drying, under normal pressure, timber is carried out convective heating earlier, principle is that timber is not being become dry, with heat penetration under the condition of humidification not.Therefore, sometimes will be in vacuum drying tank uperize, to improve the relative humidity of rank medium.Heating phase is started the blower fan running.Keep for some time, make the timber temperature reach certain value after, stop heating this moment, blower fan also stops operating, when vacuumizing, wood surface moisture explosive vaporization.Therefore, must control the speed that vacuumizes, in case timber crack, the length of vacuum stages time is confirmed according to lumber thickness.The every thick 1mm of timber, the pumpdown time is 1min, so heats and vacuumizes intermittence, circulation repeatedly is till the water ratio of timber meets the requirements.
After moisture content reaches requirement, under the condition of normal pressure and blower fan running, timber is carried out temperature adjustment handle.Spray is steamed in the charing jar, improves the equilibrium moisture content of timber, and the treatment time is different according to lumber thickness, is generally 8～24 hours.
The intermittent vacuum drying schedule of the industrial pin of China, deciduous species is in following:
| |
1 | 2 | 3 | 4 |
| Medium temperature in jar (℃) | 90-95 | 85-90 | 80-85 | 75-80 |
| The timber stack temperature (℃) | 82 | 73-75 | 72 | 63-65 |
| Vacuum tightness (Pa) | 9.3×10 4 | 9.3×10 4 | 9.3×10 4 | 9.3×10 4 |
| Decompression time (min) | 30 | 50 | 40 | 70 |
Explain: No. 1 benchmark is applicable to the coniferous wood below the thickness 30mm;
No. 2 benchmark is applicable to the coniferous wood about thickness 50mm;
No. 3 benchmark are applicable to the broad-leaved wood la below the thickness 30mm;
No. 4 benchmark is applicable to the broad-leaved wood la about thickness 50mm.
In the described steps A, purpose is with moving energy to be provided for moisture evaporation in the timber.The humidity of air dielectric is controlled in the level that balances each other with timber top layer water ratio during heating, makes timber transpiring moisture not basically in heat-processed.
Among the step B, before changing vacuum stages over to, the timber skin temperature is apparently higher than internal layer, if vacuumize immediately, timber top layer moisture will evaporate in a large number, be easy to generate bigger moisture gradient, make timber crack.Therefore often establish one section starting time of 20-40 minute in heating and between vacuumizing, to reduce the temperature difference on the timber material heart, top layer.
With the state that is evacuated in the carbonizing apparatus, be in order to reduce the boiling point of water, to reduce the vaporization temperature of moisture.
Because of in the vacuum-evaporation stage, the inner moisture of timber can not evaporate fully, when guaranteeing in the back one step charred wood; Timber can not influence the color even of carbonized wood because inside is different with surperficial water cut; Therefore, before the intensification charing, with the wood surface damping.
The beneficial effect of the superhigh temperature wood carbonization method among the present invention is: carbonization of wood treating processes does not use other to add chemical.The hygroscopic property of timber reduces, and removes the compound of " edible ", strengthens the weather resistance of timber, reduces the retractility of timber, improves the stability of timber, and the carbonized wood treating processes does not have objectionable impurities to generate.
Charing charred wood according to above-mentioned carbonization of wood process method is handled has following performance through test:
Processing characteristics: the difference that does not have on the performance is sawed, creates, milled to carbonized wood and untreated timber.
Weather resistance: by national standard and industry standard carbonized wood is carried out mildew-resistant, corrosion-resistanting test, its weather resistance increase is very remarkable as a result.
Absorption of water and dimensional stability: the water absorbability of warp test carbonized wood and the reduction of retractility are very remarkable, and the difference of tangential expansion and radial swelling significantly reduces.This proves absolutely that the charing processing can obviously improve Wood Dimensional Stability.
Physical and mechanical property: the timber after charing is handled, its mechanical property was associated with log scale seeds, treatment temp, treatment time, descended though bending resistance Young's modulus, ultimate compression strength and impelling strength have in various degree through test, and its use properties is not influenced.
The painting performance: through paint performance and the untreated wood type of test carbonized wood seemingly, in addition better.The no oil spilling in aging back, and good sticking power is arranged.
Adhesiveproperties: test shows that carbonized wood compares with undressed timber, and its glue performance is better, and effect is better.Explain that the timber of handling has not only improved dimensional stability and more can improve its glue performance.
Description of drawings
The apparatus structure synoptic diagram that Fig. 1 uses for the present invention;
The apparatus structure synoptic diagram that Fig. 2 uses for the present invention;
Fig. 3 is that the A-A of Fig. 2 is to view;
Fig. 4 is the inventive method process flow sheet.
Embodiment
Below in conjunction with specific embodiment the present invention is further specified:
Be depicted as the ultrahigh-temperature timber vacuum carbonizing apparatus that the inventive method is used like Fig. 1-3, comprise charing jar 17, be provided with heat pipe 2 in the charing jar 17; Linking to each other with charing jar 17 also can be with the evacuator that vacuumizes in the charing jar 17 18, and said evacuator 18 is connected with charing jar 17 through vacuum-pumping tube; For charing jar 17 provides the vapour generator 19 of water vapor, described vapour generator 19 and charing jar 17 are connected through conduit; Be used to heat the boiler 20 of heat-conducting medium, said boiler 20 communicates with heat pipe 2.Can be to the supply gas blower fan 21 of body of charing jar 17, blower fan 21 is communicated with charing jar 17 inner chambers through airduct.
Said charing jar comprises tank body 15, and said tank body 15 1 ends are provided with movable cover 1 and end socket 9; Be provided with heat pipe 2 in the tank body 15; Heat pipe 2 is arranged at tank base, and the heat pipe 2 of tank body 15 bottoms is more than one or two, and bent portions is distributed in tank body 15 bottoms; Heat pipe 2 also is arranged at tank body 15 both sides, and the heat pipe 2 of tank body both sides is respectively more than one or two, and bent portions is distributed in the tank body both sides respectively.Described heat pipe 2 is provided with heat-conducting medium import 11 and outlet 10; Tank body 15 is provided with vacuum-pumping tube interface 14, air blower tube import 13 and exports 16; Also be provided with steam inlet 7 on the tank body 15, be used to measure the tensimeter 3 of tank body internal pressure, be used to measure the TM 4 of temperature in the tank body; Tank body 15 is provided with SV 8; Tank body 15 bottoms are provided with sewage draining exit 12, and heat-conducting medium is a thermal oil.Movable cover 1 is provided with the lead import of the determinator of measuring interior moisture content of material heap and temperature.、
A kind of superhigh temperature wood carbonization method is characterized in that, may further comprise the steps:
A. timber is sealed in the charing jar, makes the temperature in the vacuum charing jar be reached for 100-120 ℃, kept 1.5-3 hour; Feed 100～120 ℃ of thermal oils in the heat pipe 2, and, utilize thermal oil and water vapor that timber is heated to 100～120 ℃ to wood surface injection water steam; During heating, open blower fan, promote air flowing in the charing jar; Can make each several part timber temperature even, keep 2～4 hours;
B. desiccated wood, stops heating at a, and timber was placed 20-40 minute; B, use evacuator are with vacuumizing in the vacuum charing jar, and making the interior vacuum tightness of charing jar is 0.015-0.05MPa; C, when the timber core temperature reaches 40-55 ℃, with returning to normal pressure in the charing jar, recover in the normal pressure process, to wood surface injection water steam, repeating step a, b reach below 12% moisture content;
C. using thermal oil that timber is heated to 150 ℃-200 ℃, kept 8-10 hour;
D. reduce below the temperature to 100 ℃ in the charing jar, in this process, to wood surface injection water steam, during heating, open blower fan, promote air flowing in the charing jar, can make each several part timber temperature and humidity even, timber was placed 2-3 hour.
The foregoing description only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other alternative means that it may occur to persons skilled in the art that are all in claim scope of the present invention.
Claims (2)
1. a superhigh temperature wood carbonization method is characterized in that, may further comprise the steps:
A. timber is positioned in the charing jar, timber is heated to 100～120 ℃, and, kept 2～4 hours to wood surface injection water steam;
B. desiccated wood makes moisture content reach 3～4%;
C. again timber is heated to 150 ℃～200 ℃, kept 8-10 hour;
D. reduce below the temperature to 100 ℃ in the charing jar, in this process, to wood surface injection water steam;
Described step B comprises: a, stop heating, timber was placed 20-40 minute; B, with vacuumizing in the charing jar, make that vacuum tightness is 0.015-0.05MPa in the charing jar; C, when the timber core temperature reaches 40-55 ℃, with returning to normal pressure in the charing jar, recover in the normal pressure process, to wood surface injection water steam, reach 3～4% to moisture content.
2. superhigh temperature wood carbonization method according to claim 1 is characterized in that, among the described step D, reduce below the temperature to 100 ℃ in the charing jar after, timber was placed 2-3 hour.
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| CN2008100332232A CN101497799B (en) | 2008-01-29 | 2008-01-29 | Superhigh temperature wood carbonization method |
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| CN2008100332232A CN101497799B (en) | 2008-01-29 | 2008-01-29 | Superhigh temperature wood carbonization method |
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| CN101497799B true CN101497799B (en) | 2012-11-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542696A (en) * | 2013-09-25 | 2014-01-29 | 开原圣意达木材干燥设备有限公司 | Wood vacuum drying-carbonization integrated kiln |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103770173B (en) * | 2014-01-17 | 2016-02-17 | 贺州市恒达板业有限公司 | A kind of Wood machining properties ameliorative way |
| CN105403001B (en) * | 2015-11-18 | 2018-07-31 | 阜南县大喜柳编工艺品有限公司 | A kind of method for drying wood |
| CN105269652A (en) * | 2015-11-20 | 2016-01-27 | 黄万忠 | Method for producing wood-based artificial carbonized wood |
| CN108204714A (en) * | 2016-12-20 | 2018-06-26 | 郭玉亮 | A kind of vacuum drying of wood tank and technique |
| CN110029791A (en) * | 2019-04-28 | 2019-07-19 | 谭宇 | A kind of floor heating bamboo joint type carbonized solid wood floor and preparation method thereof |
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| US5678324A (en) * | 1993-05-12 | 1997-10-21 | Valtion Teknillinen Tutkimuskeskus | Method for improving biodegradation resistance and dimensional stability of cellulosic products |
| CN1876343A (en) * | 2006-07-13 | 2006-12-13 | 中南林业科技大学 | High temperature water heat processing method for timber |
| CN101007412A (en) * | 2007-01-23 | 2007-08-01 | 王益新 | Ultrahigh temperature heat treatment method of wood |
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- 2008-01-29 CN CN2008100332232A patent/CN101497799B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678324A (en) * | 1993-05-12 | 1997-10-21 | Valtion Teknillinen Tutkimuskeskus | Method for improving biodegradation resistance and dimensional stability of cellulosic products |
| CN1876343A (en) * | 2006-07-13 | 2006-12-13 | 中南林业科技大学 | High temperature water heat processing method for timber |
| CN101007412A (en) * | 2007-01-23 | 2007-08-01 | 王益新 | Ultrahigh temperature heat treatment method of wood |
Non-Patent Citations (1)
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| 龙超等.热处理木材的工艺及应用.《木材工业》.2007,第21卷(第6期),44-46. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542696A (en) * | 2013-09-25 | 2014-01-29 | 开原圣意达木材干燥设备有限公司 | Wood vacuum drying-carbonization integrated kiln |
| CN103542696B (en) * | 2013-09-25 | 2016-07-06 | 开原圣意达木材干燥设备有限公司 | A kind of vacuum drying of wood carbonization one kiln |
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| CN101497799A (en) | 2009-08-05 |
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Effective date of registration: 20191219 Address after: 214500 No.19 Fukang Road, Xieqiao Town, Jingjiang City, Taizhou City, Jiangsu Province Patentee after: Jingjiang Guolin Wood Co. Ltd. Address before: 200051, building 1, building 518, No. 4 West Zhongshan Road, Shanghai, Changning District Patentee before: Shanghai Dabutong Wood Technology Co., Ltd. |
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