CN101664947B - Production method of carbonized wood - Google Patents
Production method of carbonized wood Download PDFInfo
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- CN101664947B CN101664947B CN200910307918XA CN200910307918A CN101664947B CN 101664947 B CN101664947 B CN 101664947B CN 200910307918X A CN200910307918X A CN 200910307918XA CN 200910307918 A CN200910307918 A CN 200910307918A CN 101664947 B CN101664947 B CN 101664947B
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- timber
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Abstract
The present invention discloses a production method of carbonized wood, relating to a production method of carbonized wood and solving the problems that the existing production of the carbonized wood has high cost due to adoption of nitrogen as protective gas, exhausts CO2 and is not environment-friendly when in burning due to adoption of coal as fuel. The method comprises the following steps: (1) the wood is stacked on a support steel beam in a carbonization treating kiln from down to up; (2) a kiln door is closed and a gas inlet and a gas outlet are opened; (3) a biomass material is ignited; (4) the temperature-rising speed is 15 to 20 DEG C/h, and intermittent steam-spraying is carried out to the wood; (5) when the temperature in the kiln rises to 180 to 230 DEG C, mixed gas of carbon dioxide and nitrogen in the kiln forms a flame-retardant oxygen-separation layer between the wood and a combustion chamber; (6) the temperature of the wood is kept for 3.5 to 4.5 hours; (7) the gas inlet and the gas outlet are opened, and the water content of the wood is 4 to 8 percent; and (8) when the temperature in the kiln is reduced to 40 to 60 DEG C, the wood is taken out, namely, a carbonized wood finished product. The production method of carbonized wood uses biomass as fuel, and does not add chemical medicament, and the produced carbonized wood has no pollution and is beneficial to environment protection.
Description
Technical field
The present invention relates to a kind of production method of carbonized wood.
Background technology
Timber is natural material, compares with other material, is characterized in renewable, can processes, and be widely used in fields such as building materials, furniture.Yet also there are many deficiencies in timber, can produce drying shrinkage when using as timber with surrounding environment generation exchange of moisture and rise with wet, thereby cause woodwork distortion, cracking; Timber is again the food of many mushrooms and insect, so woodwork is easily mouldy, infested, the waste gas that large number of biological material burning simultaneously produces can't be utilized environment is polluted.And in the present carbonized wood production process, mostly utilize traditional timber dry kiln and superhigh temperature Equipment for Heating Processing to produce, just can enter the superhigh temperature Equipment for Heating Processing owing to come out to be cooled to uniform temperature after the kiln drying of timber drying is dry, in the superhigh temperature heat treatment process, the fuel of traditional timber dry kiln adopts coal, can discharge CO during coal burning
2, environment is polluted, be unfavorable for environmental protection, protective gas adopts nitrogen or steam usually, thereby causes the carbonized wood production cost to increase, the defective that have simultaneously that the heat energy utilization rate is low, long processing period, production cost are higher, is difficult to popularize.
Summary of the invention
The objective of the invention is to adopt nitrogen as protective gas for solving in the existing carbonized wood production process, cause cost to increase, fuel adopts coal, can discharge CO during burning
2, be unfavorable for the problem of environmental protection, a kind of production method of carbonized wood is provided.
Method of the present invention realizes by following steps: the several piece desiccated wood that one, will handle piles up from the bottom to top on support girder steel in the kiln is handled in charing, the spacing between each piece timber and the consistency of thickness of timber; Two, close the wicket that kiln is handled in charing, open air admission hole and steam vent; Three, the indoor biological material of ignition combustion, the thermal current that the biological material after the burning produces are directly handled charing the timber heating in the kiln, and described biological material is the stalk after wood chip or the pulverizing; Four, adjust the plane burning area of biological material and the size of air admission hole and steam vent, be controlled at 15-20 ℃/h, in temperature-rise period, be interrupted to timber water spray steam with the programming rate of adjusting charing processing kiln inner chamber; Five, charing is handled when cavity temperature rises to 180 ~ 230 ℃ in the kiln, close air admission hole and steam vent, the biological material oxygen depletion to the air that burns away, the mist that the kiln inner chamber has only carbon dioxide packing and nitrogen is handled in charing this moment, and this gas forms fire-retardant oxygen barrier layer between timber and combustion chamber; Six, timber is incubated 3.5 ~ 4.5h in fire-retardant environment; Seven, open air admission hole and steam vent, make charing handle the cooling of kiln inner chamber, temperature is reduced to: be 55～65 ℃ summer, is interrupted to timber water spray steam, and making charing handle the kiln inner chamber increases humidity, and humidity reaches 35 ~ 65%, and the moisture content that makes timber is 4 ~ 8%; When eight, treating that cavity temperature is reduced to 40 ~ 60 ℃ in the charing processing kiln, take out timber and be the carbonized wood finished product.
Advantage of the present invention is: one, because the present invention uses biological material to act as a fuel, do not add any chemical agent in processing procedure, therefore, the processing cost of wanting required for the present invention is low, and pollution-free gas produces, is beneficial to environmental protection.Two, the characteristics that the carbonized wood that utilizes the inventive method to obtain has that dimensional stability is good, good endurance, anti-corrosion property can be high.Three, heat energy utilization rate height, processing cycle weak point.Four, the carbonized wood of producing through the present invention can be used for building construction, outdoor gardens, indoor and outdoor decoration and furniture manufacturing.Five, entire process process of the present invention is fuel with the biological material, and the regulation according to relevant provision in the Kyoto Protocol requires CO
2The meter discharge capacity be zero, so the present invention has the free of contamination characteristics of environmental protection.
Description of drawings
Fig. 1 is overall structure master's cutaway view that kiln 1 is handled in charing, being labeled as among the figure: the central axis of coagulation earth kiln body 1, operating desk 2, copper mesh 3, first V shaped slab 4, second V shaped slab 5, support girder steel 6, shower nozzle 7, jet pipe 8, steam generator 9, medium temperature sniffer 10, heart layer temperature detection device 11, skin temperature sniffer 12, zirconium oxide-oxygen amount detector 13, exhaust control device 14, timber 15, air admission hole 1-1, steam vent 1-2, combustion chamber 1-3, air admission hole 1-1 is H apart from the distance of coagulation earth kiln body 1 inner chamber bottom surface.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment realizes by following steps: the several piece desiccated wood 15 that one, will handle piles up from the bottom to top on support girder steel 6 in the kiln 1 is handled in charing, the spacing between each piece timber 15 and the consistency of thickness of timber 15 are to satisfy thermal current even flowing from the bottom to top; Two, close the wicket that kiln 1 is handled in charing, open air admission hole 1-1 and steam vent 1-2; Three, the biological material in the 1-3 of ignition combustion chamber, the thermal current that the biological material after the burning produces are directly handled charing timber 15 heating in the kiln 1; Four, adjust the plane burning area of biological material and the size of air admission hole 1-1 and steam vent 1-2, be controlled at 15-20 ℃/h, in temperature-rise period, be interrupted to timber 15 water spray steams with the programming rate of adjusting charing processing kiln 1 inner chamber; Five, charing is handled when cavity temperature rises to 180 ~ 230 ℃ in the kiln 1, close air admission hole 1-1 and steam vent 1-2, the biological material oxygen depletion to the air that burns away, the mist that kiln 1 inner chamber has only carbon dioxide packing and nitrogen is handled in charing this moment, and this gas forms fire-retardant oxygen barrier layer between timber 15 and combustion chamber; Six, timber 15 is incubated 3.5 ~ 4.5h in fire-retardant environment; Seven, open air admission hole 1-1 and steam vent 1-2, make charing handle the cooling of kiln 1 inner chamber, temperature is reduced to: be 55 ~ 65 ℃ summer, interruption is to timber 15 water spray steams, making charing handle kiln 1 inner chamber increases humidity, and humidity reaches 35 ~ 65%, and the moisture content that makes timber 15 is 4 ~ 8%; When eight, treating that cavity temperature is reduced to 40 ~ 60 ℃ in the charing processing kiln 1, take out timber 15 and be the carbonized wood finished product.The inventive method at the heat heating timber that uses the biological material burning to produce simultaneously, the carbon dioxide packing that burning produces and the mist of nitrogen be as the required gas of carbonized wood production, for the environment of a fire-retardant oxygen barrier and CO have been created in the production of carbonized wood
2Meter discharging be zero; The inventive method is not added any chemical agent to timber in handling the timber process simultaneously, so the present invention is pollution-free.
The specific embodiment two: in conjunction with Fig. 1 present embodiment is described, the biological material in the step 3 of present embodiment is the stalk after wood chip or the pulverizing.The biological material wide material sources, discarded object in the timber process, the remaining wood chip in timber processing back, the remaining stalk in various crops harvesting backs, various biological materials can be brought usedly for it in the Nature, and what enlarged biological material utilizes scope and field; Biological material effective utilization has in the methods of the invention to a certain degree reduced the demand to coal, meets the state basic policy of national energy-saving and emission-reduction; The heat and the gas generation carbonized wood that utilize the biological material burning to produce, really having reached fully turns waste into wealth.Other step is identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 present embodiment is described, the programming rate that kiln 1 inner chamber is handled in the charing in the step 4 of present embodiment is controlled at 18 ℃/h.This programming rate can guarantee that timber does not deform in heat treatment process.Other step is identical with the specific embodiment one.
The specific embodiment four: in conjunction with Fig. 1 present embodiment is described, the charing in the present embodiment step 5 is handled kiln 1 interior cavity temperature and is risen to 200 ℃.Said temperature can guarantee charing processing kiln 1 inner drying sheet material generation carbonization reaction.Other step is identical with the specific embodiment one.
The specific embodiment five: in conjunction with Fig. 1 present embodiment is described, the flame treatment ambient condition in the step 6 of present embodiment is insulation 4h down.This temperature retention time is enough to guarantee the generation of carbonized wood.Other step is identical with the specific embodiment one.
The specific embodiment six: in conjunction with Fig. 1 present embodiment is described, the charing in the step 7 of present embodiment is handled kiln 1 interior cavity temperature and reduced to: be 60 ℃ summer, and charing is handled kiln 1 inner chamber humidity and reached 50%, and the moisture content of timber 15 is 6%.Charing is handled kiln 1 interior cavity temperature and reduced to: be 60 ℃ summer, and charing is handled kiln 1 inner chamber humidity and reached at 50% o'clock, makes that the moisture content of timber 15 is 6%; This moisture content provides assurance for guaranteeing the carbonized wood dimensional stability.Other step is identical with the specific embodiment one.
The specific embodiment seven: in conjunction with Fig. 1 present embodiment is described, the charing in the step 8 of present embodiment is handled when cavity temperature is reduced to 50 ℃ in the kiln 1, takes out timber 15.The timber 15 that this temperature is taken out can not have the temperature difference to cause distortion because of temperature and the temperature in the atmosphere that kiln 1 is handled in charing.Other step is identical with the specific embodiment one.
Utilize the inventive method that larch is carried out the charing test, set charing processing kiln 1 interior cavity temperature and be respectively 180 ℃, 190 ℃, 200 ℃, 210 ℃, 220 ℃, 230 ℃, other test condition is identical, and anti-(contracting) rate value that expands of the carbonized wood that obtains sees Table 1.
Table 1
| Handle gas | Anti-(contracting) property that expands |
| Conventional treatment | 35.62% |
| Nitrogen protection is handled | 62.18% |
| The biomass combustion gas treatment | 61.74% |
Through comparing; anti-(contracting) rate that expands of timber under nitrogen protection is 62.18%; the dimensional stability of carbonized wood is greatly improved than conventional treatment; and anti-(contracting) rate that expands of the timber after the biomass combustion gas treatment is 61.74%; the two is more approaching, and the dimensional stability of carbonized wood also is able to bigger raising, though than under the nitrogen protection lower slightly a bit; but from the cost and the aspect of making rational use of resources, this invention has better met international about the emission of carbon-dioxide requirement.
Claims (6)
1. the production method of a carbonized wood, it is characterized in that: described method realizes by following steps: the several piece desiccated wood (15) that one, will handle piles up from the bottom to top on support girder steel (6) in the kiln (1) is handled in charing, the spacing between each piece timber (15) and the consistency of thickness of timber (15); Two, close the wicket that kiln (1) is handled in charing, open air admission hole (1-1) and steam vent (1-2); Three, the biological material in ignition combustion chamber (1-3), the thermal current that the biological material after the burning produces are directly handled charing timber (15) heating in the kiln (1), and described biological material is the stalk after wood chip or the pulverizing; Four, adjust the plane burning area of biological material and the size of air admission hole (1-1) and steam vent (1-2), be controlled at 15-20 ℃/h, in temperature-rise period, be interrupted to timber (15) water spray steam with the programming rate of adjusting charing processing kiln (1) inner chamber; When five, the interior cavity temperature of charing processing kiln (1) rises to 180 ~ 230 ℃, close air admission hole (1-1) and steam vent (1-2), the biological material oxygen depletion to the air that burns away, the mist that kiln (1) inner chamber has only carbon dioxide packing and nitrogen is handled in charing this moment, and this gas forms fire-retardant oxygen barrier layer between timber (15) and combustion chamber; Six, timber (15) is incubated 3.5 ~ 4.5h in fire-retardant environment; Seven, open air admission hole (1-1) and steam vent (1-2), make charing handle the cooling of kiln (1) inner chamber, temperature is reduced to: be 55～65 ℃ summer, interruption is to timber (15) water spray steam, make charing handle kiln (1) inner chamber and increase humidity, humidity reaches 35 ~ 65%, and the moisture content that makes timber (15) is 4 ~ 8%; When eight, treating that the interior cavity temperature of charing processing kiln (1) is reduced to 40 ~ 60 ℃, take out timber (15) and be the carbonized wood finished product.
2. according to the production method of the described a kind of carbonized wood of claim 1, it is characterized in that: the programming rate that kiln (1) inner chamber is handled in the charing in the described step 4 is controlled at 18 ℃/h.
3. according to the production method of the described a kind of carbonized wood of claim 1, it is characterized in that: the charing in the described step 5 is handled the interior cavity temperature of kiln (1) and is risen to 200 ℃.
4. according to the production method of the described a kind of carbonized wood of claim 1, it is characterized in that: the flame treatment ambient condition in the described step 6 is insulation 4h down.
5. according to the production method of the described a kind of carbonized wood of claim 1, it is characterized in that: the charing in the described step 7 is handled the interior cavity temperature of kiln (1) and reduced to: be 60 ℃ summer, charing is handled kiln (1) inner chamber humidity and is reached 50%, and the moisture content of timber (15) is 6%.
6. according to the production method of the described a kind of carbonized wood of claim 1, it is characterized in that: when the interior cavity temperature of charing processing kiln (1) in the described step 8 is reduced to 50 ℃, take out timber (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910307918XA CN101664947B (en) | 2009-09-29 | 2009-09-29 | Production method of carbonized wood |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910307918XA CN101664947B (en) | 2009-09-29 | 2009-09-29 | Production method of carbonized wood |
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| CN101664947A CN101664947A (en) | 2010-03-10 |
| CN101664947B true CN101664947B (en) | 2011-09-14 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225566A (en) * | 2011-04-22 | 2011-10-26 | 周彩球 | High-temperature thermal treatment timber production method |
| CN102825643A (en) * | 2011-06-13 | 2012-12-19 | 承泰丰木业有限公司 | Waterproof dense board |
| CN102990752B (en) * | 2012-11-30 | 2015-07-22 | 浙江世友木业有限公司 | Sheet carbonizing method |
| CN103072171B (en) * | 2013-02-05 | 2015-02-04 | 陈全明 | Wood carbonizing device |
| CN103273546A (en) * | 2013-05-30 | 2013-09-04 | 哈尔滨市三立雅风科技开发有限公司 | Method for preparing heat treatment wood through binary mixed gas |
| CN103273547B (en) * | 2013-06-04 | 2016-03-02 | 东北林业大学 | A kind of method being prepared uniform heat treatment wood by way of stacking |
| CN103808121B (en) * | 2014-03-05 | 2015-07-15 | 龙胜县宏胜木业有限公司 | Castanopsis fagaceae drying process |
| CN104875265A (en) * | 2015-06-24 | 2015-09-02 | 南通亚振东方家具有限公司 | Carbonizing and flame retarding integrated production process for timbers |
| CN105252623B (en) * | 2015-09-11 | 2017-07-04 | 安吉恒丰竹木产品有限公司 | A kind of method of fast cooling in bamboo and wood material high temperature carbonization operation |
| CN106064418B (en) * | 2016-07-08 | 2018-05-22 | 江苏柚尊家居制造有限公司 | A kind of timber deep charring device |
| CN111216208B (en) * | 2020-03-10 | 2021-12-21 | 广西格卡环保科技有限公司 | Wood carbonization treatment method and equipment |
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2009
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