CN101491908A - Wood high-heat treatment device and technological process thereof - Google Patents
Wood high-heat treatment device and technological process thereof Download PDFInfo
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- CN101491908A CN101491908A CNA2009100257645A CN200910025764A CN101491908A CN 101491908 A CN101491908 A CN 101491908A CN A2009100257645 A CNA2009100257645 A CN A2009100257645A CN 200910025764 A CN200910025764 A CN 200910025764A CN 101491908 A CN101491908 A CN 101491908A
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Abstract
The invention relates to a device and a technical method for the high-temperature thermal treatment of timber. The device adopts a structure that: the air outlet of a reverse combustion-type combustion-heat exchange integral hot blast stove is communicated with the air inlet of a gas ejector pipe, the air outlet of the gas ejector pipe is communicated with the air inlet pipe of a return pipe through a log pile in a logging truck, the air outlet pipe of the return pipe is connected with one end of a heat supply fan through a humidifying device, the other end of the heat supply fan is connected with the air inlet of the reverse combustion-type combustion-heat exchange integral hot blast stove, and the smoke outlet of the reverse combustion-type combustion-heat exchange integral hot blast stove is connected with an induced draft fan; and a machine body of the high temperature thermal treatment device is provided with a machine body heat-preservation layer, and the top of the reverse combustion-type combustion-heat exchange integral hot blast stove is provided with a charging hole. The technical method comprises the steps of piling, ignition, process control, conditioning treatment, temperature reduction and discharge and the like. The device and the method have that advantages that: residues of timber processing are used as fuel, the heat exchange of a thermal treatment cyclic medium is carried out through the reverse combustion-type combustion-heat exchange integral hot blast stove at a time, the thermal efficiency is high, the combustion is complete and no pollution is produced.
Description
Technical field
The present invention relates to a kind of timber high temperature thermal treatment and process, belong to the wood processing technique field.
Background technology
At present, conventional timber high-temperature heat treatment process is that timber is placed under the steam protection, is to carry out between 180 ℃～220 ℃ in heat treatment temperature, and so high heat treatment temperature is unpractical with the saturated steam under the high pressure as heating agent.Therefore, the usually heating agents that adopt conduction oil (oily temperature is usually greater than 240 ℃) as heating of industrialized timber high temperature thermal treatment more, like this in the investment of equipment, except the investment that will consider Equipment for Heating Processing itself, also need to increase the investment of auxiliary devices such as heat-conducting oil heating system, steam boiler or steam generator.Under individual cases, the gross investment of auxiliary device even can surpass the investment of Equipment for Heating Processing itself, its operating cost is also higher, and then can cause rolling up of heat-treated wood cost.
On the other hand, wood machining residues is the inevitable outcome in the woodwork production process.For most wooden enterprises already, heat-conducting oil furnace is fuel usually with the wood machining residues, the heat that is produced by wood machining residues burning like this, earlier pass to conduction oil by heat-conducting oil furnace, passed to the heat-treatment medium of Equipment for Heating Processing inside afterwards again by conduction oil, in fact the energy utilization rate of twice heat exchange is not high.And, because wooden fuel's volatile matter is very high, when incomplete combustion, a large amount of volatile matters enter indoor and outdoor surroundings with flue gas, both directly be detrimental to health, also pollutant atmosphere is the heat-conducting oil furnace of fuel with the wood machining residues promptly, and itself also exists than the serious environmental pollution problem.
Summary of the invention
The objective of the invention is to propose a kind of timber high temperature thermal treatment and process, it can be under the prerequisite of guaranteeing the high-temperature heat treatment lumber quality, reduce the technology cost of equipment investment cost and high-temperature heat treatment timber significantly, and using energy source height, safer, the environmental protection of operating process.
Technical solution of the present invention: timber high temperature thermal treatment, its structure is to comprise the counter-burning type burning, heat-exchange integrated hot-blast stove, the high temperature thermal treatment body, the heat supply blower fan, air-introduced machine, damping device, wherein counter-burning type burning, the air outlet of heat-exchange integrated hot-blast stove communicates with the air inlet of air jet pipe, the air outlet of air jet pipe communicates with the air inlet pipe of muffler by the heap of the material in the log-wagons, the escape pipe of muffler joins by an end of damping device and heat supply blower fan, the other end of heat supply blower fan and counter-burning type burning, the air inlet of heat-exchange integrated hot-blast stove joins, the counter-burning type burning, the outlet flue and the air-introduced machine of heat-exchange integrated hot-blast stove join; The high temperature thermal treatment body is provided with the body heat-insulation layer, and charge door is established at the top of counter-burning type burning, heat-exchange integrated hot-blast stove.
A kind of method of timber high-temperature heat treatment is characterized in that this method comprises following technology:
1) stacking: the correct piling of pending material on the delivery dolly, will be delivered dolly afterwards and push in the high temperature thermal treatment body, and close chamber's door;
2) igniting: wood machining residues is sent into the combustion zone by the charge door that is positioned at the body of heater upper end, and it is lighted, start air-introduced machine afterwards, control oxygen feeding amount and fuel combustion state by regulating the air-introduced machine rotating speed by fire door;
3) technology controlling and process: start the heat supply blower fan, the pending timber in the body is carried out the temperature section heating, initial stage drying stage temperature is 100 ℃～130 ℃, slowly heats up, dry after again segmentation with fast slightly programming rate heating; In heat treatment process, by regulating the unlatching of heat supply blower fan and damping device, regulate and control the desired programming rate of heat treatment, heat treated outlet temperature is controlled between 180 ℃～220 ℃, and the heat treatment temperature retention time is 1～2h/cm;
4) damping is handled: heat treatment process by damping device, provides steam after finishing in body, the processing of lowering the temperature treats that temperature reduces to 85 ℃～95 ℃, humidity 95～100% in the maintenance machine, timber is carried out damping handle, the final moisture content of timber is transferred to 5%～7%;
5) lower the temperature and the chamber: after treating that the damping processing procedure finishes, when reducing to the timber temperature below 50 ℃, go out the chamber.
Advantage of the present invention: with the wood machining residues is fuel, and the heat treatment cycle medium carries out disposable heat exchange, thermal efficiency height, sufficient combustion, pollution-free by counter-burning type burning, heat-exchange integrated hot-blast stove.With existing be that the timber high temperature thermal treatment of heating agent is compared with the conduction oil, reduced equipment investment and operating cost significantly, the security of operation also is improved.
Description of drawings
Accompanying drawing 1 is a system schematic of the present invention.
Accompanying drawing 2 is furnace binding schematic diagrames of the present invention.
Accompanying drawing 3 is furnace binding cross sectional plan views of the present invention.
Among the figure 1 is the high temperature thermal treatment body, the 2nd, and air jet pipe, 3 body heat-insulation layers, 4 body of heater air outlets, the 5th, counter-burning type burning, heat-exchange integrated hot-blast stove, the 6th, charge door, the 7th, outlet flue, the 8th, air-introduced machine, the 9th, fire door, the 10th, body of heater air inlet, the 11st, heat supply blower fan, the 12nd, humidification (water) device, the 13rd, muffler, the 14th, log-wagons, the 15th, material heap, the 16th, combustion zone, the 17th, heat transfer zone, the 18th, spiral aviation baffle, the 19th, heat exchanger tube, the 20th, fire grate, the 21st, flame retardant coating, the 22nd, insulating layer of furnace body.
The specific embodiment
Contrast accompanying drawing 1, its structure is that the air outlet 4 of heat-exchange integrated hot-blast stove 5 communicates with the air inlet of air jet pipe 2, the air outlet of air jet pipe 2 communicates with the air inlet pipe of muffler 13 by the heap of the materials in the log-wagons 14 15, the escape pipe of muffler 13 joins by the end of damping device 12 with heat supply blower fan 12, the air inlet 10 of the other end of heat supply blower fan 12 and heat-exchange integrated hot-blast stove 5 joins, and the outlet flue 7 and the air-introduced machine 8 of heat-exchange integrated hot-blast stove 5 join; High temperature thermal treatment body 1 is provided with body heat-insulation layer 3, and charge door 6 is established at the top of heat-exchange integrated hot-blast stove 5.
Embodiment 1 seeds: China fir; Thickness: 20mm; Heat treatment maximum temperature: 220 ℃
1) stacking: the correct piling of fir wood plank on the delivery dolly, will be delivered dolly afterwards and push in the high temperature thermal treatment body, and close chamber's door;
2) igniting: wood machining residues is sent into the combustion zone by the charge door that is positioned at the body of heater upper end, and it is lighted, start air-introduced machine afterwards, control oxygen feeding amount and fuel combustion state by regulating the air-introduced machine rotating speed by fire door.
3) technology controlling and process: start the heat supply blower fan, the pending timber in the body is heated.In the heat treatment process, by regulating the unlatching of heat supply blower fan and humidification (water) device, regulate and control the desired state of the art of heat treatment, heat treated outlet temperature is controlled between 220 ℃, and the heat treatment temperature retention time is 3h.
4) damping is handled: after heat treatment process finishes, by humidification (water) device, provide steam in body, processings of lowering the temperature treats that temperature reduces to 85 ℃, and the interior humidity of maintenance machine is debugged processing to timber.
5) lower the temperature and the chamber: after treating that the damping processing procedure finishes, when reducing to the timber temperature below 50 ℃, go out the chamber.
1) stacking: the correct piling of masson pine sheet material on the delivery dolly, will be delivered dolly afterwards and push in the high temperature thermal treatment body, and close chamber's door;
2) igniting: wood machining residues is sent into the combustion zone by the charge door that is positioned at the body of heater upper end, and it is lighted, start air-introduced machine afterwards, control oxygen feeding amount and fuel combustion state by regulating the air-introduced machine rotating speed by fire door.
3) technology controlling and process: start the heat supply blower fan, the pending timber in the body is heated.In the heat treatment process, by regulating the unlatching of heat supply blower fan and humidification (water) device, regulate and control the desired state of the art of heat treatment, heat treated outlet temperature is controlled in 200 ℃, and the heat treatment temperature retention time is 3h.
4) damping is handled: after heat treatment process finishes, by humidification (water) device, provide steam in body, processings of lowering the temperature treats that temperature reduces to 90 ℃, and the interior humidity of maintenance machine is debugged processing to timber.
5) lower the temperature and the chamber: after treating that the damping processing procedure finishes, when reducing to the timber temperature below 50 ℃, go out the chamber.
Embodiment 3 seeds: Manchurian ash; Thickness: 25mm; Heat treatment maximum temperature: 190 ℃
1) stacking: the correct piling of Manchurian ash sheet material on the delivery dolly, will be delivered dolly afterwards and push in the high temperature thermal treatment body, and close chamber's door;
2) igniting: wood machining residues is sent into the combustion zone by the charge door that is positioned at the body of heater upper end, and it is lighted, start air-introduced machine afterwards, control oxygen feeding amount and fuel combustion state by regulating the air-introduced machine rotating speed by fire door.
3) technology controlling and process: start the heat supply blower fan, the pending timber in the body is heated.In the heat treatment process, by regulating the unlatching of heat supply blower fan and humidification (water) device, regulate and control the desired state of the art of heat treatment, heat treated outlet temperature is controlled between 190 ℃, and the heat treatment temperature retention time is 4h.
4) damping is handled: after heat treatment process finishes, by humidification (water) device, provide steam in body, processings of lowering the temperature treats that temperature reduces to 95 ℃, and the interior humidity of maintenance machine is debugged processing to timber.
5) lower the temperature and the chamber: after treating that the damping processing procedure finishes, when reducing to the timber temperature below 45 ℃, go out the chamber.
Timber high-temperature heat treatment technology (carbonized wood technology) is one of emerging technology of wood processing field.Existing studies show that: permanent change has taken place in some physics of high-temperature heat treatment timber, chemical property.The change of these character is because the pyrolysis of hemicellulose is caused, drying shrinkage and bulking that cause reduce through the timber of high-temperature heat treatment is different by humidity, biological corrosion resistance improves, wood color is deepened, extract is along with heat treatment is gone out by extracting from timber, timber weight lightens, equilibrium moisture content reduces, pH value reduces, heat-proof quality improves, in addition in the high-temperature heat treatment timber production process without any need for the high hygiene of chemical reagent, color is attractive in appearance, is well suited for as the material of making the sauna inner facility.In addition, for softwood, grease is uniform after the high-temperature heat treatment, helps paint.Just because of this, high-temperature heat treatment timber is since coming out, and with a series of outstanding advantages such as its good biodurable, weatherability, dimensional stability and safety, environmental protection, just increasingly extensive application is particularly aspect outdoor wood building and decoration.
Claims (3)
1, the timber high temperature thermal treatment, it is characterized in that comprising the counter-burning type burning, heat-exchange integrated hot-blast stove, the high temperature thermal treatment body, the heat supply blower fan, air-introduced machine, damping device, wherein counter-burning type burning, the air outlet of heat-exchange integrated hot-blast stove communicates with the air inlet of air jet pipe, the air outlet of air jet pipe communicates with the air inlet pipe of muffler by the heap of the material in the log-wagons, the escape pipe of muffler joins by an end of damping device and heat supply blower fan, the other end of heat supply blower fan and counter-burning type burning, the air inlet of heat-exchange integrated hot-blast stove joins, the counter-burning type burning, the outlet flue and the air-introduced machine of heat-exchange integrated hot-blast stove join; The high temperature thermal treatment body is provided with the body heat-insulation layer, and charge door is established at the top of counter-burning type burning, heat-exchange integrated hot-blast stove.
2, according to the described timber high temperature thermal treatment of claim 1, it is characterized in that described counter-burning type burning, heat-exchange integrated hot-blast stove adopt the double-bladder type structure, inner bag is the combustion zone, outer courage is a heat transfer zone, be flame retardant coating between combustion zone and heat transfer zone, flame retardant coating and furnace insulation interlayer are heat transfer zone, and the centre of heat transfer zone is a heat exchanger tube, have in the heat transfer zone along spiral aviation baffle, establish two-layer fire grate in the combustion zone.
3, a kind of method of timber high-temperature heat treatment is characterized in that this method comprises following technology:
1) stacking: the correct piling of pending material on the delivery dolly, will be delivered dolly afterwards and push in the high temperature thermal treatment body, and close chamber's door;
2) igniting: wood machining residues is sent into the combustion zone by the charge door that is positioned at the body of heater upper end, and it is lighted, start air-introduced machine afterwards, control oxygen feeding amount and fuel combustion state by regulating the air-introduced machine rotating speed by fire door;
3) technology controlling and process: start the heat supply blower fan, the pending timber in the body is carried out the temperature section heating, initial stage drying stage temperature is 100 ℃～130 ℃, slowly heats up, dry after again segmentation with fast slightly programming rate heating; In heat treatment process, by regulating the unlatching of heat supply blower fan and damping device, regulate and control the desired programming rate of heat treatment, heat treated outlet temperature is controlled between 180 ℃～220 ℃, and the heat treatment temperature retention time is 1～2h/cm;
4) damping is handled: heat treatment process by damping device, provides steam after finishing in body, the processing of lowering the temperature treats that temperature reduces to 85 ℃～95 ℃, humidity 95～100% in the maintenance machine, timber is carried out damping handle, the final moisture content of timber is transferred to 5%～7%;
5) lower the temperature and the chamber: after treating that the damping processing procedure finishes, when reducing to the timber temperature below 50 ℃, go out the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100257645A CN101491908B (en) | 2009-03-09 | 2009-03-09 | Wood high-heat treatment device and technological process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100257645A CN101491908B (en) | 2009-03-09 | 2009-03-09 | Wood high-heat treatment device and technological process thereof |
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| CN101491908A true CN101491908A (en) | 2009-07-29 |
| CN101491908B CN101491908B (en) | 2012-04-25 |
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| CN2009100257645A Expired - Fee Related CN101491908B (en) | 2009-03-09 | 2009-03-09 | Wood high-heat treatment device and technological process thereof |
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Cited By (16)
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| CN102407548A (en) * | 2011-09-09 | 2012-04-11 | 南京林业大学 | Method for manufacturing solid wood floorings by utilizing densified fast growing woods |
| CN102581897A (en) * | 2012-03-22 | 2012-07-18 | 中国林业科学研究院木材工业研究所 | Heat treatment method of solid wood |
| CN106003321A (en) * | 2016-07-15 | 2016-10-12 | 河南聆海整体家具有限公司 | Thermal modifying method suitable for logs or thick lumbers |
| CN106166779A (en) * | 2015-12-22 | 2016-11-30 | 北京林业大学 | A kind of timber heat modification processing equipment |
| CN106182282A (en) * | 2015-12-22 | 2016-12-07 | 北京林业大学 | A kind of timber heat modification processing method |
| CN106217550A (en) * | 2016-08-31 | 2016-12-14 | 安吉永鼎家具有限公司 | Intelligent temperature control circulating energy-efficient type Oleum Verniciae fordii heat-treatment production line |
| CN106239678A (en) * | 2016-08-19 | 2016-12-21 | 广州市拿火信息科技有限公司 | A kind of Technology for Heating Processing of acoustic guitar soundboard |
| CN106363744A (en) * | 2016-08-31 | 2017-02-01 | 安吉永鼎家具有限公司 | Tung oil thermal treatment automatic production line for bamboo and wood products |
| CN106378844A (en) * | 2016-08-31 | 2017-02-08 | 安吉永鼎家具有限公司 | Oil temperature circulation control system for bamboo-wood product tung oil heat treatment production line |
| CN106393377A (en) * | 2016-12-16 | 2017-02-15 | 邳州市蚨瑞金木业有限公司 | Plate type high-pressure anaerobic carburizing device for wood |
| CN106568336A (en) * | 2016-08-31 | 2017-04-19 | 安吉永鼎家具有限公司 | Circulation energy-saving heating system for bamboo and wood product production line |
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| CN109405445A (en) * | 2018-11-06 | 2019-03-01 | 中山市大涌镇志吉烘干厂 | A kind of timber stoving technique |
| CN109397440A (en) * | 2018-10-27 | 2019-03-01 | 福建省银泰林业开发有限公司 | A kind of process equipment and technique of anti-corrosion bamboo board |
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| CN115219702A (en) * | 2022-07-15 | 2022-10-21 | 安徽农业大学 | Prediction method and prediction model for hemicellulose content after wood heat treatment |
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2009
- 2009-03-09 CN CN2009100257645A patent/CN101491908B/en not_active Expired - Fee Related
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| CN102407548B (en) * | 2011-09-09 | 2014-07-23 | 南京林业大学 | Method for manufacturing solid wood floorings by utilizing densified fast growing woods |
| CN102407548A (en) * | 2011-09-09 | 2012-04-11 | 南京林业大学 | Method for manufacturing solid wood floorings by utilizing densified fast growing woods |
| CN102581897A (en) * | 2012-03-22 | 2012-07-18 | 中国林业科学研究院木材工业研究所 | Heat treatment method of solid wood |
| CN106166779A (en) * | 2015-12-22 | 2016-11-30 | 北京林业大学 | A kind of timber heat modification processing equipment |
| CN106182282A (en) * | 2015-12-22 | 2016-12-07 | 北京林业大学 | A kind of timber heat modification processing method |
| CN106182282B (en) * | 2015-12-22 | 2017-12-05 | 北京林业大学 | A kind of timber heat modification processing method |
| CN106166779B (en) * | 2015-12-22 | 2017-11-24 | 北京林业大学 | A kind of timber heat modification processing equipment |
| CN106003321B (en) * | 2016-07-15 | 2017-05-31 | 河南聆海整体家具有限公司 | Suitable for log or the heat modification method of thick square bar |
| CN106003321A (en) * | 2016-07-15 | 2016-10-12 | 河南聆海整体家具有限公司 | Thermal modifying method suitable for logs or thick lumbers |
| CN106239678B (en) * | 2016-08-19 | 2018-11-30 | 广州市拿火信息科技有限公司 | A kind of heat treatment process of acoustic guitar soundboard |
| CN106239678A (en) * | 2016-08-19 | 2016-12-21 | 广州市拿火信息科技有限公司 | A kind of Technology for Heating Processing of acoustic guitar soundboard |
| CN106568336B (en) * | 2016-08-31 | 2018-10-26 | 安吉永鼎家具有限公司 | A kind of bamboo and wood products' production line circulating energy-saving heating system |
| CN106568336A (en) * | 2016-08-31 | 2017-04-19 | 安吉永鼎家具有限公司 | Circulation energy-saving heating system for bamboo and wood product production line |
| CN106378844A (en) * | 2016-08-31 | 2017-02-08 | 安吉永鼎家具有限公司 | Oil temperature circulation control system for bamboo-wood product tung oil heat treatment production line |
| CN106363744A (en) * | 2016-08-31 | 2017-02-01 | 安吉永鼎家具有限公司 | Tung oil thermal treatment automatic production line for bamboo and wood products |
| CN106217550A (en) * | 2016-08-31 | 2016-12-14 | 安吉永鼎家具有限公司 | Intelligent temperature control circulating energy-efficient type Oleum Verniciae fordii heat-treatment production line |
| CN106393377A (en) * | 2016-12-16 | 2017-02-15 | 邳州市蚨瑞金木业有限公司 | Plate type high-pressure anaerobic carburizing device for wood |
| CN109333718A (en) * | 2018-10-19 | 2019-02-15 | 南京林业大学 | A kind of bamboo wood mildew-proof treatment method |
| CN109397440A (en) * | 2018-10-27 | 2019-03-01 | 福建省银泰林业开发有限公司 | A kind of process equipment and technique of anti-corrosion bamboo board |
| CN109405445A (en) * | 2018-11-06 | 2019-03-01 | 中山市大涌镇志吉烘干厂 | A kind of timber stoving technique |
| CN114477136A (en) * | 2022-03-23 | 2022-05-13 | 安徽科达洁能股份有限公司 | System for carbonizing negative electrode material and carbonization process |
| CN114477136B (en) * | 2022-03-23 | 2023-03-17 | 安徽科达洁能股份有限公司 | System for carbonizing anode material and carbonization process |
| CN115219702A (en) * | 2022-07-15 | 2022-10-21 | 安徽农业大学 | Prediction method and prediction model for hemicellulose content after wood heat treatment |
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