CN205415928U - Hot modification equipment of timber - Google Patents

Abstract

The utility model discloses a hot modification equipment of timber, this equipment include gasification burner, heat transfer device, heat modification device, volatile organic compounds collection device and the fan system that connects gradually through the connecting line, the utility model discloses a heat that the treatment facility will gasify the burner production offers the heat modification device under the effect of fan system, carry out hot modification to timber to the VOC who produces the hot modification of timber collects. The utility model discloses an it is simple to handle equipment structure, and the thermal efficiency is high to agriculture and forestry discarded object, residue, wood working residue etc. Are planted the source living beings and are fuel, and burn / just burn the reverse side through gasifying, high -efficient heat transfer provides the heat source for the hot modification of timber, under the prerequisite of guaranteeing high warm modification lumber quality, shows land reduction equipment investment cost and running cost, has avoided timber heat modification in -process volatile organic compounds's emission and thermal pollution.

Description

A kind of timber heat modification processing equipment

Technical field

This utility model relates to a kind of timber heat modification processing equipment, particularly to a kind of utilize wood machining residues, agriculture and forestry organic waste material, residue etc. plant source biomass for fuel counter burn provide thermal source timber heat modification processing equipment, belong to wood processing technique field.

Background technology

Along with the enforcement of country's wildwood protected project, efficient, the increment of artificial fast-growing woods utilize and have been increasingly becoming Domestic Scientific Research mechanism and the research of manufacturing enterprise and focus.For many years, it is attempted to by being modified processing to fast growing wood by the method for chemistry, and achieves certain achievement.But, how to eliminate chemical treatment material during preparation and use to human body and the harm of environment, and chemical treatment timber goods, can be accepted by people, one needs the preferential problem solved especially.The heat modification technology on physical modification method that hence sets up is still in all kinds of method of modifying of current timber that practicality is the strongest, remarkable in economical benefits, and eco-friendly method of modifying.Heat modification timber is with its good biodurable, weatherability, dimensional stability and a series of prominent advantages such as safe and environment-friendly, and the most increasingly extensive application, particularly in terms of outdoor Wood construction and decoration.

At present, conventional timber high-temperature hot modified technique is to be placed under aqueous vapor shielded by timber, is to carry out between 180 DEG C～220 DEG C in heat treatment temperature, the highest heat treatment temperature, is unpractical with the saturated steam under high pressure as heating agent.Therefore, industrialized timber high-temperature hot modified device generally more uses conduction oil (oil temperature is typically larger than 240 DEG C) as the heating agent of heating, so in the investment of equipment, in addition to the investment of Equipment for Heating Processing to be considered itself, in addition it is also necessary to increase the investment of the auxiliary devices such as heat-conducting oil heating system, steam boiler or steam generator.On rare occasion, the gross investment of auxiliary device even can exceed the investment of Equipment for Heating Processing itself, and its operating cost is the highest, and then can cause the substantial increase of heat-treated wood cost.

Chinese patent literature CN101745951A discloses a kind of modified artificial forest wood and preparation method thereof on June 23rd, 2010.This disclosure of the invention artificial forest wood dipping enhancings-heat treatment modification technology, step is as follows: 1. using with modified urea-formaldehyde resin is that the impregnation liquid impregnating host carries out impregnation process to timber；2. the timber after impregnation process is carried out vacuum heat.Wood dimensional stability prepared by this inventive method is high, and strength of wood is high, and performance that moisture-resisting is swollen and decay resistance increase, and improve the added value of timber, expand the range of application of heat-treated wood.But, although the timber dimensional stability after chemically processing increases, owing to wood internal contains chemical agent, no matter the timber after process be that the process of garbage when in use all can cause environment pollution, harmful.

Chinese patent literature CN101491908A discloses a kind of timber high temperature thermal treatment and process on July 9th, 2009, with wood machining residues as fuel, heat treatment cycle medium is burnt by counter-burning type, heat-exchange integrated air stove carries out disposable heat exchange, and the thermal efficiency is high, it is abundant, pollution-free to burn.But its reverse burning furnace partial function is single, it is only capable of realizing counter burning operation, can not meet the technological requirement in different temperatures stage, not account for the problem of cooling, the fire grate life-span is low, maintenance load big at fire grate, all-in-one oven thermal power is little can not meet industrialization production requirements；Chamber body is internal to be only had and the most single causes the humiture field of inner treatment chamber uneven into and out of trachea, processes of low quality；Package unit lacks the collection device of volatile organic matter, causes the discharge of VOC during timber heat modification and thermal pollution more serious.

The purpose of this utility model is propose a kind of environment-friendly type timber heat modification equipment and improve the processing method of uniformity, this equipment is with wood machining residues, agricultural crop straw, garden waste, it is fuel that wood machining residues etc. plant source biomass, pass through gasification counter-combustion, process conditions needed for high efficient heat exchanging realization, without thermal oil heating piping system necessary to extra steam source and conventional high-temperature heat modification, can be on the premise of guaranteeing high-temperature thermal treatment timber quality, significantly decrease equipment investment cost and operating cost, avoid discharge and the thermal pollution of volatile organic matter during timber heat modification.

Utility model content

The purpose of this utility model is that the technical problem existed during timber heat modification processes for existing timber heat modification processing equipment provides a kind of timber heat modification processing equipment.Heat modification device structure of the present utility model is simple, source biomass is planted as fuel with agricultural crop straw, garden waste, wood machining residues etc., process conditions needed for being realized by gasification counter-combustion, high efficient heat exchanging, without thermal oil heating piping system necessary to extra steam source and conventional high-temperature heat modification, can be on the premise of guaranteeing high-temperature thermal treatment timber quality, significantly decrease equipment investment cost and operating cost, it is to avoid the discharge of volatile organic matter and thermal pollution during timber heat modification.

For realizing the purpose of this utility model, on the one hand this utility model provides a kind of timber heat modification processing equipment, including the gasified combustion apparatus being sequentially connected with by connection pipeline, heat-exchanger rig, heat modification device, volatile organic matter (VOC) collection device and the blower fan system being connected with heat-exchanger rig, wherein:

Described gasified combustion apparatus includes counter-burning type gasification furnace, heat smoke passage, just burns exhaust gases passes and be positioned at the fire grate assembly of gasification furnace, wherein: described heat smoke passage is positioned at the outside of the rear wall of described gasification furnace and integral with gasification furnace body of heater be connected and connect with described gasification furnace；The described exhaust gases passes that just burning is arranged on the outside of left and right sides wall of described gasification furnace and integral with gasification furnace body of heater be connected and connect with described gasification furnace；Described fire grate assembly is fixed on the middle part of gasification furnace, and gasification furnace is divided into upper and lower combustor；

Described heat modification device includes housing, thermal chamber, blast pipe, backwind tube, modified exhanst gas outlet, and wherein, described housing is overall in cuboid-type or square build, arranges closing door to be opened/closed on front side of it, and rear side is closed；The thermal chamber of enclosure interior be cross section be the cavity of rectangle；Described blast pipe is fixed on the top of thermal chamber and near the front side wall of housing and along front side wall horizontal positioned；Described backwind tube arranges inside thermal chamber, near housing rear wall and the rear wall horizontal positioned along housing；Described modified exhanst gas outlet is arranged on the top of housing rear wall, and heat modification processes the heat modification device described in flue gas discharge produced.

Wherein, counter-burning type gasification furnace includes body of heater, flue, exhanst gas outlet, fire grate assembly, and wherein body of heater is overall in cuboid-type or square build；The flue of furnace interior is the cavity of rectangular in cross-section, forms gasification combustion chamber；Described fire grate assembly is fixed on the middle part of flue, and flue is divided into upper combustion chamber and lower combustion chamber；Described exhanst gas outlet is arranged on the rear wall of lower combustion chamber.

Particularly, the inwall of described body of heater is made up of refractory material, and outside is made up of insulation material, can not only extend the service life of body of heater, it is also possible to reduce the heat exchange of body of heater and environment, reduces thermal loss, improves the thermal efficiency.

Particularly, upper furnace door is offered in the middle and upper part of the front side wall of described body of heater；Lower furnace door is offered in middle and lower part, for combustion position and the oxygen supply in combustor up and down of Real Time Observation flue fuel.

Wherein, described exhanst gas outlet is arranged on the rear wall of gasification furnace body of heater lower combustion chamber, and runs through rear wall, is connected with described heat smoke passage.The heat smoke that gasification furnace burning produces is discharged through heat smoke passage.

Wherein, the bottom lock of described body of heater, top is provided with charge door and closes the top cover of charge door.

Particularly, described charge door to arrange position corresponding with flue, i.e. the center of charge door adapts with the axis of flue, in beneficially fuel falls into flue.

Wherein, the middle and lower part of the left and right sidewall of described body of heater is respectively provided with left and right auxiliary oxygen feeder, and the left and right auxiliary oxygen feeding tube that left and right auxiliary oxygen feeder extends to 2 outside gasification counter-combustion furnace body respectively is connected, air or oxygen outside body of heater is imported furnace interior, provides oxygen to divide for the fuel combustion in flue.

Particularly, described auxiliary oxygen feeding tube is respectively provided with in extending in the pipeline outside gasification furnace and assists into oxygen valve, and regulation assists the opening and closing into oxygen valve valve or opening degree, regulates oxygen feeding amount, improves fuel economy.

Particularly, described auxiliary oxygen feeder position is set and the exhanst gas outlet of the bottom of the rear wall being opened in body of heater is positioned at same level.It is beneficial to reduce heat smoke and flows into the resistance of heat smoke passage, reduce blower fan resistance, improve heat exchange efficiency.

Especially, the axle center that exhanst gas outlet is offered in the axle center of described left and right side auxiliary oxygen feeder and the bottom of the rear wall of body of heater is positioned at same level.

Particularly, described auxiliary oxygen feeding tube is connected with described just burning exhaust gases passes respectively, will enter the lower combustion chamber described in heat smoke feeding just burning in exhaust gases passes, and then through the heat smoke passage described in the entrance of described exhanst gas outlet, and then discharge gasification counter-combustion device.

Wherein, the top of the left and right sidewall of described body of heater is offered respectively and left and right is just being burnt floss hole, and the left and right floss hole that just burning is connected with the described left and right exhaust gases passes that just burning respectively, for gasification furnace when just the mode of burning is burnt in employing, heat smoke burning produced is derived from upper combustion chamber, flow into and just burning exhaust gases passes, flow into lower combustion chamber the most again, enter heat smoke passage through exhanst gas outlet and discharge gasification furnace.

Particularly, the described exhaust gases passes that just burning just is burning between floss hole and auxiliary oxygen feeder, will just burn floss hole and connect with auxiliary oxygen feeder.

Wherein, described just burning floss hole in arrange and just burn chimney valve.Just burning chimney valve to open, fuel burns in the just mode of burning in gasification furnace；Just burning chimney valve to close, fuel burns in anti-burning mode in gasification furnace.When the most just burning chimney valve unlatching, just burning floss hole, just burn exhaust gases passes, auxiliary oxygen feeding tube, auxiliary oxygen feeder connection, by just burning in flue the heat smoke of generation through just burn floss hole, just burn exhaust gases passes, auxiliary oxygen feeding tube, auxiliary oxygen feeder send into the lower combustion chamber of gasification counter-combustion stove, then discharge through described exhanst gas outlet；When just burning chimney valve closedown, just burning floss hole blocked, it is impossible to forming heat smoke flow channel, gasification counter-combustion stove carries out trans burning.

Particularly, described auxiliary oxygen feeding tube is positioned at and just burns the bottom of exhaust gases passes and be connected with just burning exhaust gases passes.By entering the lower combustion chamber described in the heat smoke feeding just burning in exhaust gases passes, then discharge through described exhanst gas outlet.

Especially, described auxiliary oxygen feeding tube is horizontally disposed with；The described exhaust gases passes that just burning is vertically arranged.

Wherein, described fire grate assembly includes in flat fire grate main body and is positioned at the upper steel pipe at the upper and lower two ends of fire grate main body, lower steel pipe, and wherein, described fire grate main body is rearranged by many steel pipes are spaced and parallel, and keeps at a certain distance away between adjacent two steel pipes；Described upper and lower steel pipe is connected in one with described fire grate main body steel pipe, and connects each other in junction, forms water stream channel.

Particularly, described fire grate main body steel pipe is integral with upper and lower firm sealing of tube, and connects each other at weld, forms internal water flow passages.

Particularly, the spacing distance between adjacent two steel pipes of described fire grate main body is 4-10mm.

Especially, described fire grate main body is formed by 2-5 root steel pipe is arranged in parallel, preferably 3-4 root.

Wherein, described fire grate assembly includes fire grate main body and is positioned at the upper and lower steel pipe at fire grate main body two ends, and described fire grate main body is overall to be made up of many steel pipes in tabular, is spaced, arranged in parallel；Described upper steel pipe, lower steel pipe are along being perpendicular to the most integral with described fire grate main body steel-pipe welding of fire grate main body steel pipe, and upper and lower steel pipe communicates with each other at weld with fire grate main body steel pipe, forms the inner passage of flow of cooling water.Cooling water flows into from lower steel pipe, flows out from upper steel pipe after fire grate main body steel pipe.

Particularly, described upper steel pipe, the axis of lower steel pipe are mutually perpendicular to the axis of the steel pipe of composition fire grate main body.

Wherein, outer surface one layer of flame retardant coating being made up of refractory material of attachment of the steel pipe of composition fire grate main body.

Particularly, the thickness >=10mm of described flame retardant coating.nullFlame retardant coating not only can prevent steel pipe to be burned，Extend steel pipe physical life，Be conducive to being smoothed out of gasification counter-combustion process，Cooling water can be passed through in fire grate steel pipe again according to in-furnace temperature and steel tube surface temperature (reaching more than 900 DEG C)，Fire grate is carried out cooling process，Reduce the temperature of stoker surface，Extend the fire grate life-span further，In gasification counter-combustion early stage，It not the highest due to in-furnace temperature，Cooling water should not be opened，Process the later stage，When in-furnace temperature is the highest，When the physical life of steel pipe is had an impact，Fire grate can be played the effect of cooling protection by condensed water，And while being passed through cooling water carries out cooling protection process to fire grate，Condensed water within fire grate is owing to absorbing heat，Portion of water can be changed into steam，Thus the steam that will produce in fire grate steel pipe，It is passed through in the follow-up equipment needing steam treatment (inside such as timber heat modification device, timber can be played heating and the effect of damping)，Realize heat recovery，Improve energy use efficiency.

Wherein, described upper steel pipe is arranged in body of heater rear wall, along rear wall horizontal positioned；Described lower steel pipe is arranged in body of heater front side wall, along front side wall horizontal positioned.

Particularly, one end of described upper and lower steel pipe is closed, the other end is open, blind end is arranged on right side wall or the left side wall of body of heater, open one end spreads out of from body of heater left side wall or right side wall, and extends to the outside of left side wall or right side wall, is connected with cooling water pipe, cooling water is introduced the fire grate assembly in flue, lowers the temperature for fire grate assembly.

Wherein, described fire grate assembly slant setting is in flue, and described angle of inclination is 0-10 °, preferably 5 °.The steam being beneficial in fire grate produce the most up moves and the eliminating of beneficially later stage fire grate internal moisture.

Particularly, described lower steel pipe is arranged on middle part or the middle part position on the lower side of body of heater front side wall；Upper steel pipe is arranged in the middle part of body of heater rear wall or position on the upper side, middle part.

Particularly, described heat smoke passage is connected by pipeline with described heat-exchanger rig.

Wherein, described heat-exchanger rig includes that heat exchange body, body interior install the heat exchanging chamber of many heat exchanger tubes, the heat smoke blast pipe being arranged on body lower part and heat modification medium ingress pipe；It is arranged on heat smoke discharge pipe and the heat modification medium delivery line of body upper part.

Particularly, described body is made heat exchange body by adiabator, overall in column type, has cavity, form heat transfer zone inside it；The upper/lower terminal of body is closed.

Wherein, described heat smoke blast pipe is connected by being connected pipeline with the heat smoke passage of described gasified combustion apparatus；Described heat smoke discharge pipe is connected with smoke exhaust fan by connecting pipeline；Described heat smoke blast pipe, heat smoke discharge pipe are connected with the heat exchanging chamber of described heat-exchanger rig, carry out heat exchange in the heat exchanging chamber of the substantial amounts of heat smoke importing heat-exchanger rig produced by described gasified combustion apparatus；Described heat modification medium ingress pipe, heat modification medium delivery line are connected by being connected pipeline with described heat modification device respectively.

Particularly, described heat modification medium ingress pipe is connected by being connected pipeline with the backwind tube of described heat modification device；Described heat modification medium delivery line is connected by being connected pipeline with the blast pipe of described heat modification device.

Especially, described heat-exchanger rig selects shell-and-tube heat exchanger.

Particularly, the bottom of described many heat exchanger tubes is connected with described heat modification medium ingress pipe by flange；Its top is connected with described heat modification medium delivery line by flange.

The heat smoke that gasified combustion apparatus produces is under the effect of smoke exhaust fan, blast pipe from heat exchange body lower end enters heat exchange cavity zone, flow through heat exchanger tube, after transferring heat to heat exchanger tube, then flow out from the heat smoke discharge pipe being positioned at body upper end under the drive of smoke exhaust fan.Heat modification to be heated processes medium under the drive of heat supply blower fan, heat modification medium ingress pipe from body lower end enters in the heat exchanger tube in heat exchange cavity zone, after absorbing the heat of heat smoke, flow out heat-exchanger rig from the heat modification medium delivery line being positioned at body upper end, enter annealing device.

Particularly, one end of the blast pipe of described heat modification device is closed, and the other end is connected with the heat modification medium delivery line of heat-exchanger rig by connecting pipeline, and the heat-treatment medium absorbing thermal source after heat exchange being processed imports annealing device.

Wherein, blast pipe is positioned at the length of the length of thermal chamber and the front side wall of thermal chamber and matches；Blast pipe is positioned on the surface of the pipeline within thermal chamber and fixedly mounts multiple air intake nozzle.

Particularly, described air intake nozzle is evenly distributed on the surface of blast pipe, and air intake nozzle, towards material heap to be heated, sprays heat-treatment medium to material heap, heats material heap.

Wherein, radical >=1 piece of described backwind tube, preferably 3；

Particularly, one end of described backwind tube is closed, and is positioned at thermal chamber, and the other end passes housing left side wall or right side wall, projects outward from the housing, and is connected with heat-exchanger rig by connecting pipeline, the process medium after modification is imported heat-exchanger rig.

Especially, the one end outside described backwind tube extends in housing arranges return air valve；By opening and closing or the opening degree of regulation air returning valve, the flowing of the heat-treatment medium in control thermal chamber, thus control the uniformity of whole heat treatment indoor temperature in heat modification processing procedure.

Wherein, described backwind tube at least 3, the most horizontally arranged along housing rear wall, the top of the setting height(from bottom) of 3 backwind tubes and process material heap to be modified, middle part, the height of bottom match, i.e. upper, middle and lower backwind tube.

Particularly, described backwind tube near the rear wall of housing and along rear wall horizontal positioned, and described 3 backwind tubes along the horizontal direction of housing rear wall under upper horizontally arranged.

Especially, it is respectively provided with return air valve (preferably electrically operated valve) in described 3 backwind tubes adapted with material heap upper, middle and lower portion height, opening and closing or opening degree by return air valve control to enter the flow of the heat modification medium in backwind tube, it is achieved the regulation and control of the uniformity for the treatment of of wood temperature in timber heat modification processing procedure.

Especially, the top of the setting height(from bottom) of described 3 backwind tubes and the rear wall of housing, middle part, lower position adapt.

Particularly, the described backwind tube along housing rear wall horizontal positioned is divided into backwind tube group on 3 groups, upper, middle and lower, i.e. heat modification process chamber, middle backwind tube group, lower backwind tube group according to order from top to down.

Wherein, each backwind tube group is made up of at least 1 backwind tube.

Particularly, the height of upper, middle and lower backwind tube group matches with the height in the upper, middle and lower portion of material heap to be modified.

Wherein, the length of length and the horizontal direction of thermal chamber rear wall that backwind tube is positioned at thermal chamber matches；And equally distributed multiple return air inlet is set on the surface of backwind tube.Collect the medium after material heap is carried out heat treatment, it is simple to heat-treatment medium is uniformly across material heap and uniformly flows into backwind tube so that heat modification homogeneous media is distributed, and reaches the uniformity of material heap heat treatment.

Wherein, the one end outside described backwind tube extends in housing arranges return air valve；By opening and closing or the opening degree of regulation air returning valve, the flowing of the heat-treatment medium in control thermal chamber, thus reach the uniformity of heat treatment indoor temperature.

Particularly, described in extend in after 3 roots/group of backwind tubes outside housing are connected with thermal medium air-out house steward, then be connected with heat-exchanger rig.

Wherein, the housing of described heat modification device is made up of heat-insulating material, overall in cuboid-type or square build.

Particularly, described blast pipe is connected with the heat modification medium delivery line of described heat-exchanger rig by connecting pipeline；Described backwind tube is connected with the heat modification medium ingress pipe of described heat-exchanger rig by connecting pipeline.

The heat-treatment medium absorbing heat after the heat exchange of heat-exchanger rig processes flows out from heat modification medium delivery line, in blast pipe enters thermal chamber, again through air intake nozzle to treating that the material heap that heat modification processes uniformly sprays heat-treatment medium, heat-treatment medium is through also heat wood, under the effect of heat supply blower fan, return air inlet on backwind tube is collected, enter backwind tube, enter in heat-exchanger rig from the heat modification medium ingress pipe of heat-exchanger rig, carry out heat exchange, reuptake thermal source, form the heat-treatment medium absorbing heat, it is recycled into heat modification device.

Wherein, described modified exhanst gas outlet is arranged on the top of housing rear wall, discharges thermal chamber for the heat smoke that will produce in timber heat modification processing procedure.

Particularly, described modified exhanst gas outlet is connected with described VOC collection device, imports described VOC collection device after the heat smoke produced is discharged thermal chamber in timber heat modification processing procedure.

Particularly, the temperature sensor of Wood temperature during measuring modification is also included.

Especially, described temperature sensor is separately positioned on the position, three, upper, middle and lower of process material heap to be modified.

Particularly, described temperature sensor is arranged on entering of the material heap paralleled with housing rear wall, go out in the plane of material heap and on the median plane of material heap, arrange from top to bottom, measure the upper of material heap respectively, in, the temperature of bottom, i.e. entering at the material heap paralleled with the rear wall of housing, go out in the plane of material heap and be respectively provided with 3 groups of temperature sensors from top to bottom (i.e. in the centre position of material heap from top to bottom on median plane, top at material heap, middle part, bottom is respectively provided with 1 group of temperature sensor, for measuring material heap, in, bottom timber is in heat modification temperature T of heat modification processing procedure₁、T₂、T₃)。

Particularly, also including the system that is automatically or manually controlled of the opening and closing for controlling air returning valve or opening degree, the return air speed of modification medium in regulation modification device, wherein automatic control system includes control chamber.

Especially go up, the control chamber of described automatic control system is connected with temperature sensor, electronic return air valve by circuit, by measuring the temperature in material heap upper, middle and lower portion, regulate opening and closing or the opening degree of electronic return air valve, the flowing velocity of regulation heat-treatment medium, the uniformity of heat treatment temperature in adjustment thermal chamber.

By the opening degree of the return air valve that control is arranged on the backwind tube pipeline of heat modification device, it is achieved the regulation and control of the uniformity for the treatment of of wood temperature in timber heat modification processing procedure；By controlling being turned on and off of heat supply blower fan, it is achieved the heat supply of heat treated room, heat modification process.

Wherein, described VOC (VOC) collection device, including holding the water tank of VOC absorbing liquid, at least 1 VOC washing pipeline, at least 1 water circulating pump and Duo Gen connecting water pipe, wherein: VOC washing pipeline is erected at the top of water tank, under the liquid level of the VOC absorbing liquid that one end of VOC washing pipeline holds in being immersed in water tank, form VOC and absorb closed channel；Described water pump is connected with described water tank, VOC washing pipeline by water pipe, the absorbing liquid in water tank is pumped in a VOC washing pipeline, absorbs VOC.

Particularly, described water tank is for placing the absorbing liquid absorbing VOC；Described VOC washing pipeline, for spraying VOC absorbing liquid to the gas containing VOC flowing into water purge passage, absorbs VOC therein, and VOC absorbing liquid is imported water tank；Described water circulating pump in being pumped to described VOC washing pipeline by the VOC absorbing liquid being contained in water tank；Described connecting water pipe is for being connected to each other water tank, washing pipeline, water circulating pump and carry VOC absorbing liquid.

Wherein, described VOC washing pipeline is erected at the top of water tank, fixes with the top of water tank and is connected；Under the liquid level of the VOC absorbing liquid that one end of VOC washing pipeline holds in being immersed in water tank, form VOC and absorb closed channel；Its other end is that VOC gas access is connected by pipeline with the modified exhanst gas outlet of reforming apparatus, heat modification processes the modified flue gas containing VOC produced and imports VOC washing pipeline.

Particularly, the lower end of described VOC washing pipeline is horn-like.

Especially, under the liquid level of the VOC absorbing liquid being immersed in water tank in trumpet-shaped one end of VOC washing pipeline.

Particularly, described VOC washing pipe interior, at least provided with a shower nozzle, jet water course in VOC washing pipeline, makes current be fully contacted with the gas containing VOC, absorbs the VOC in gas.

Especially, described shower nozzle selects rotary nozzle.

Particularly, the setting height(from bottom) of the shower nozzle that described VOC washing pipe interior is arranged is positioned on the liquid level of water tank；The number of described shower nozzle is 3-5.Can also be according to the height increase and decrease shower nozzle number of washing pipeline.

Especially, described shower nozzle is vertically arranged from top to bottom.Make that VOC absorbing liquid is comprehensive with VOC gas to be contacted, be conducive to fully absorbing VOC.

Wherein, the described shower nozzle in VOC washing pipeline is connected by connecting water pipe with the outlet of described water circulating pump, and the VOC absorbing liquid held in described water tank is pumped to the shower nozzle in described VOC washing pipeline.

Particularly, it is connected with each other by three-way valve or cross valve between the connecting water pipe and the connecting water pipe being connected with the outlet of described water circulating pump that are connected with the shower nozzle in described VOC washing pipeline, it is distributed to, at the shower nozzle in described washing pipeline, spray by the current that water circulating pump pumps.

Wherein, the water inlet of described water circulating pump is connected with water tank by connecting water pipe, and its outlet is connected with VOC washing pipeline by connecting water pipe.

Particularly, the middle and lower part of described water tank offers water outlet of water tank, and outlet is connected with the water inlet of water circulating pump by connecting water pipe.

Wherein, described water tank is the container closed.

Particularly, described VOC absorbing liquid selects water or weakly acidic solution, preferably water, is used for absorbing VOC.

Wherein, described blower fan system includes heat supply blower fan and smoke exhaust fan.

Particularly, described heat supply blower fan is arranged on the connection pipeline that described heat-exchanger rig is connected with described heat modification device；Described smoke exhaust fan is connected with the heat smoke discharge pipe of described heat-exchanger rig, and the heat smoke that described gasified combustion apparatus produces is pumped to described heat-exchanger rig, carries out heat exchange.

Especially, on the connection pipeline that the heat modification medium ingress pipe of backwind tube and described heat-exchanger rig that described heat supply blower fan is arranged on described heat modification device is connected, effect by heat supply blower fan, medium after being processed by heat modification is extracted out from the backwind tube of heat modification device, entering heat-exchanger rig through heat modification medium ingress pipe, carry out heat exchange, the medium after heat exchange is extracted out from heat modification medium delivery line again, the thermal chamber of heat modification device, heat wood is entered through blast pipe；Described smoke exhaust fan is arranged on the connection pipeline being connected with described heat smoke discharge pipe, and the heat smoke produced by gasified combustion apparatus entering described heat-exchanger rig is discharged heat-exchanger rig after the heat exchange.

Particularly, described heat supply blower fan also has to be extracted out heat-treatment medium after Overheating Treatment in described thermal chamber from thermal chamber, is delivered to the effect of described heat-exchanger rig；Described smoke exhaust fan also has the heat smoke produced by described gasified combustion apparatus and extracts out from heat smoke passage, is delivered to the effect of described heat-exchanger rig.

Compared with prior art, timber heat modification processing equipment of the present utility model has the advantage that

1, the gasified combustion apparatus of this utility model equipment plants source biomass as fuel with agricultural crop straw, garden waste, wood machining residues etc., raw material sources are extensive, compared with the heat modification equipment with heat-conducting oil furnace as heating system, equipment investment is few, operating cost is low, the safety of operation is high.

2, the gasified combustion apparatus of this utility model heat modification equipment had both had and counter had burnt function, has again and just burns function, can realize positive and negative burning operation flexibly according to the needs of timber heat modification technique, with meet different disposal stage and occasion with can demand；The preheating that such as processes at Wooden modifying, the heat energy such as intensification more stage, by gasification counter-combustion, fully burns, it is provided that a large amount of and sufficient heat, and heating efficiency is high, pollution-free；In the case of insulation or system blackout, can realize slowly just burning, be unlikely to lifting furnace temperature drastically, affect the quality of heat modification timber；

3, the outer surface attachment refractory masses of the fire grate assembly of the gasified combustion apparatus of this utility model heat modification equipment, keep the temperature of outer surface, be conducive to gasification reaction, the temperature of stoker surface can be reduced again by the way of water-cooled, extend the fire grate life-span further, and a small amount of self-produced steam can be realized, to be supplied to the hot worked needs of timber.

4, the air returning valve on the backwind tube pipeline of the heat modification device of this utility model heat modification equipment, by regulation air returning valve opening and closing or opening and closing degree, regulation heat modification the medium circulation of different parts, flowing velocity in thermal chamber, not only can adjust single backwind tube but also can many backwind tube combinations adjust, with the uniformity of the thermally-denatured temperature of timber in guarantee thermal chamber, improve the quality of heat modification timber.

5, VOC (volatile organic matter) collection device of this utility model heat modification equipment, circulating filtration by multilamellar moisture film, the volatile organic matter produced in high-temperature hot modifying process effectively can be collected, significantly reduce discharge and the thermal pollution of volatile organic matter during heat modification, simultaneously to volatile organic matter further with providing possibility；

6, this utility model can make biomass carry out twice combustion, and burning fully, is polluted little, and heat exchange efficiency is high.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model timber heat modification processing equipment；

Fig. 2 is the structural representation of the gasified combustion apparatus of this utility model timber heat modification processing equipment；

Fig. 3 is the cross-sectional schematic in Fig. 2 along A-A；

Fig. 4 is the cross-sectional schematic in Fig. 3 along B-B；

Fig. 5 is the structural representation of the fire grate assembly of gasified combustion apparatus；

Fig. 6 is the working state schematic representation during gasified combustion apparatus counter-burning type gasification of this utility model timber heat modification processing equipment；

Fig. 7 is the working state schematic representation during gasified combustion apparatus normal burning gasification of this utility model timber heat modification processing equipment；

Fig. 8 is the cross-sectional schematic of the heat-exchanger rig structure of this utility model timber heat modification processing equipment；

Fig. 9 is the left side schematic diagram of the heat-exchanger rig structure of this utility model timber heat modification processing equipment；

Figure 10 is the right side schematic view of the heat-exchanger rig structure of this utility model timber heat modification processing equipment；

Figure 11 is the cross-sectional schematic of the heat modification device of this utility model timber heat modification processing equipment；

Figure 12 is the cross-sectional schematic in Figure 11 along C-C；

Figure 13 is the schematic front view of the VOC collection device of this utility model timber heat modification processing equipment；

Figure 14 is the side schematic view of VOC collection device.

Description of reference numerals

1, gasified combustion apparatus；11, counter-burning type gasification furnace；110, body of heater；111, flue；1111, upper combustion chamber；1112, lower combustion chamber；112, upper furnace door；113, lower furnace door；114, exhanst gas outlet；115, fire grate assembly；1151, fire grate main body；1152, upper steel pipe；1153, lower steel pipe；116, left redundant oxygen feeder；117, right redundant oxygen feeder；118, left redundant oxygen feeding tube；119, right redundant oxygen feeding tube；120, assist into oxygen valve；121, charge door；122, top cover；12, heat smoke passage；13, exhaust gases passes is just being burnt on a left side；14, exhaust gases passes is just being burnt on the right side；15, floss hole is just being burnt on a left side；16, floss hole is just being burnt on the right side；17, chimney valve is just being burnt；2, heat-exchanger rig；21, heat exchange body；22, heat exchange cavity；23, heat exchanger tube；24, heat smoke blast pipe；25, heat smoke discharge pipe；26, heat modification medium ingress pipe；27, heat modification medium delivery line；3, heat modification device；30, heat modification exhanst gas outlet；31, heat modification processes housing；32, thermal chamber；33, closing door；34, thermal medium blast pipe；35, air intake nozzle；36, backwind tube；361, air returning valve；37, return air inlet；38, material heap；39, thermal medium return air house steward；4, VOC (volatile organic matter) collection device；41, water tank；42, washing pipeline；43, water pump；44, water pipe；45, shower nozzle；46, water outlet of water tank；477, VOC gas access；48, water；49, the water surface；51, smoke exhaust fan；52, heat supply blower fan.

Detailed description of the invention

Describe specific embodiment of the utility model with reference to the accompanying drawings in detail, advantage of the present utility model and feature will be with describe and apparent.But these embodiments are only exemplary, scope of the present utility model is not constituted any restriction.It will be understood by those skilled in the art that and the details of technical solutions of the utility model and form can be modified or replace under without departing from spirit and scope of the present utility model, but these amendments and replacement each fall within protection domain of the present utility model.

It is made up of as it is shown in figure 1, timber heat modification of the present utility model processes to set the gasified combustion apparatus 1 being sequentially connected with by connecting line, heat-exchanger rig 2, heat modification device 3, volatile organic matter (VOC) collection device 4 and the smoke exhaust fan 51 being connected with heat-exchanger rig and heat supply blower fan 52.Gasified combustion apparatus of the present utility model plants source biomass as fuel with agriculture and forestry organic waste material, residue, wood machining residues etc., by gasification counter-combustion/just burning release heat, under the effect of blower fan system (smoke exhaust fan, heat supply blower fan), heat enters heat-exchanger rig, and heat modification processes medium；Modification medium after heating carries out heat modification process to the timber in heat modification device；In last heat modification processing procedure, the modified flue gas containing VOC of release, processes after the collection of VOC collection device, is not only effectively utilized agriculture and forestry organic waste material and wood machining residues but also reduce the pollution problem in the woodwork course of processing.

As shown in Figure 1,2,3, 4, gasified combustion apparatus 1 of the present utility model includes overall one-tenth cuboid or the gasification counter-combustion stove 11 of the square bodily form, is arranged on the heat smoke passage 12 that the rear wall outside of gasification counter-combustion furnace body 110 is connected with gasification counter-combustion stove flue 111 and is connected in one with body of heater, it is arranged on being connected with gasification counter-combustion stove flue and left and right just burning exhaust gases passes 13,14 with body of heater in what one was connected outside the left and right sidewall of body of heater, being arranged on the fire grate assembly 115 in the middle part of flue, flue is divided into upper and lower combustor 1111,1112 by fire grate assembly.

The flue 111 within body of heater 110 of gasification counter-combustion stove is the cavity of rectangular in cross-section, and inboard wall of furnace body is made up of flame-proof thermal insulation material, and outer wall is made up of insulation material.Body of heater lower end closed, upper end offers fuel charge door 121 and closes the top cover 122 of charge door, and the centrage arranging position and flue of charge door adapts, and is beneficial to interpolation fuel in flue.The lower end of body of heater, the inner side of upper end are made up of refractory material, and outside is formed (not indicating in accompanying drawing) by insulation material, stop and reduce the heat exchange of body of heater and surrounding, and refractory material is not burned mainly for the protection of body of heater.

Such as Fig. 2, the middle and upper part of body of heater front side wall, middle and lower part are offered the upper and lower fire door 112,113 for observing body of heater fuel combustion situation, are beneficial to regulate in real time the oxygen feeding amount of the oxygen in the interpolation of fuel and regulation flue.

Such as Fig. 3, exhanst gas outlet 114 is offered in the bottom of body of heater rear wall；The outside being close to body of heater rear wall arranges the heat smoke passage 12 of setting, and heat smoke passage connects with exhanst gas outlet, and heat smoke gasification counter-combustion stove fuel combustion produced derives reverse burning furnace.Heat smoke passage fits tightly integral with the outside of body of heater rear wall.The inwall of heat smoke passage is made up of refractory material, outside parcel insulation material, reduces thermal loss.

Such as Fig. 4, the outside of the left and right sidewall of body of heater is vertically arranged to fit tightly with body of heater respectively is just burning exhaust gases passes 13,14 in the left and right of one；The top of the left and right sidewall of body of heater is offered and left and right is just being burnt floss hole 15,16, the left and right floss hole that just burning is near body of heater top, extend through the left and right sidewall of body of heater, form through hole, being respectively connected with leading to the left and right exhaust gases passes 13,14 that just burning, by burning under just burning state, the heat smoke produced imports to just burn exhaust gases passes from the top of body of heater.The position of the middle and lower part of the left and right sidewall of body of heater and exhanst gas outlet same level height offers the left and right auxiliary oxygen feeder 116,117 of the left and right sidewall running through body of heater respectively.Left and right auxiliary oxygen feeder and 2 auxiliary oxygen feeding tubes 118,119 are respectively connected with, outside left and right auxiliary oxygen feeding tube extends through the left and right sidewall of body of heater and extends to the body of heater of gasification counter-combustion stove.Left redundant oxygen feeding tube horizontal positioned, is positioned at a vertical left side and is just burning the bottom of exhaust gases passes and just burning exhaust gases passes with a left side and be connected；Right redundant oxygen feeding tube horizontal positioned, is positioned at and right just burning the bottom of exhaust gases passes and just burning exhaust gases passes with the right side and be connected.Left and right auxiliary oxygen feeding tube is respectively provided with in extending in the pipeline outside gasification furnace and assists into oxygen valve 120, is delivered in flue by the oxygen outside gasification furnace, provides oxygen for the fuel combustion in flue.Left and right just burning floss hole in be respectively provided with and just burn chimney valve 17, just burning when chimney valve is opened and gasification counter-combustion stove is being connected with the left and right exhaust gases passes that just burning, heat smoke burning produced imports left and right just burning exhaust gases passes from the top of body of heater through the left and right floss hole that just burning, and flows into the lower combustion chamber of gasification furnace through auxiliary oxygen feeding tube, auxiliary oxygen feeder；Discharge through exhanst gas outlet, heat smoke passage after with；When just burning chimney valve and closing, gasification counter-combustion stove is blocked with the left and right exhaust gases passes that just burning.The position that arranges of left and right auxiliary oxygen feeder is positioned at same level height with exhanst gas outlet, the axle center of the most left and right auxiliary oxygen feeder is positioned at same level with the axle center of the exhanst gas outlet that body of heater rear wall bottom is offered, decrease the blower fan resistance that heat smoke is extracted out body of heater, more conducively heat exchange.

Assist into oxygen valve no matter gasified combustion apparatus is in just burns state or anti-burning state, when furnace interior oxygen is not enough, all can opening under the anoxia conditions such as black smoke occurs auxiliary oxygen feeder in combustion process, to stove Invivo oxyger-supply, make burning more fully, completely.

Such as Fig. 5, it is fixedly mounted on the fire grate assembly 115 in the middle part of flue and is formed by flat fire grate main body 1151 and the upper and lower steel pipe 1152,1153 being positioned at the upper and lower two ends of fire grate main body, flue is divided into upper and lower combustor.Fire grate main body is made up of many (selecting 4 in this utility model detailed description of the invention, be generally selected 2-5 root) steel pipe arranged in parallel and that be spaced, and the spacing distance between adjacent two steel pipes is 4-10mm (preferably 6mm).Upper and lower steel pipe is positioned at the two ends of fire grate main body steel pipe, is mutually perpendicular to the steel pipe constituting fire grate main body, and upper and lower steel pipe connects each other with the steel pipe constituting fire grate main body, is internally formed passage.Fire grate assembly is placed with 0-10 ° of (preferably 5 °) angle of inclination in flue, i.e. fire grate subject plane is 0-10 ° with the angle of horizontal plane, the steam produced in fire grate is so conducive to the most up to move and the eliminating of beneficially later stage fire grate internal moisture, the position on the lower side, middle part that lower steel pipe is arranged on body of heater front side wall, upper steel pipe is arranged on position on the upper side in the middle part of body of heater rear wall.One end of upper and lower steel pipe is closed, the other end is open, blind end be separately positioned on body of heater front right side wall or or sidewall, outside open end extends to body of heater left side wall or right side wall (Fig. 1), being connected with cooling water pipe, cooling water flows into from lower steel pipe, and cooling water is introduced the fire grate assembly in flue, flow out from upper steel pipe, lower the temperature for fire grate assembly.

The upper and lower steel pipe of this utility model fire grate assembly is integral with the many steel-pipe weldings constituting fire grate main body, and upper and lower steel pipe connects at weld each other with the steel pipe of composition fire grate main body, form passage, i.e. upper steel pipe, the axis of lower steel pipe together with fire grate main body steel-pipe welding is mutually perpendicular to the axis of the steel pipe of composition fire grate main body, and communicates with each other at weld.Cooling water it is passed through in the steel pipe of fire grate assembly,

The flame retardant coating (not indicating in figure) of outer surface one layer of thickness >=10mm being made up of refractory material of attachment of the steel pipe of composition fire grate main body, flame retardant coating not only can prevent steel pipe to be burned, extend steel pipe physical life, be conducive to the carrying out of gasification counter-combustion process, condensed water can be passed through according to in-furnace temperature and steel tube surface temperature in fire grate steel pipe, fire grate carried out cooling process by the way of water-cooled again, reduce the temperature of stoker surface, extend the fire grate life-span further.When in-furnace temperature the highest (>=900 DEG C); affect the service life of steel pipe; fire grate can be played cooling, the effect of protection to being passed through condensed water in steel pipe; and while protection fire grate; condensed water within fire grate is owing to absorbing heat; portion of water can be changed into steam; owing to fire grate has certain angle of inclination; the steam produced can the most up move; thus get rid of from the upper steel pipe of fire grate, then the steam of generation is passed through inside timber heat modification device and timber can be played heating and the effect of damping.

Fuel enters flue from charge door 121, under the support of fire grate assembly, fuel burns in the upper combustion chamber above fire grate assembly, the scorching hot charcoal produced in fuel completely and the combustion process of not burning enters lower combustion chamber under gravity and burns away, the flue gas produced in upper combustion chamber in combustion process is under the effect of smoke exhaust fan, enter lower combustion chamber and carry out second-time burning, the part burnt the most completely in upper combustion chamber is burnt again, make full combustion of fuel, will not produce black smoke gas, so produce a large amount of cleaning heat smoke.Fuel (garbage in agriculture, woods, animal husbandry, residue etc.) can make it fully burn by twice combustion, and burning completely, reduces the discharge of pollutant.

Such as Fig. 1,8,9,10, heat-exchanger rig 2 include the entirety being made up of adiabator be the heat-exchanger rig body 21 of column type, the heat exchange cavity 22 of body interior, many heat exchanger tubes 23 being arranged in heat exchanging chamber and fixing with body be connected heat smoke blast pipe 24, heat smoke discharge pipe 25, heat modification medium ingress pipe 26, heat modification medium delivery line 27.The upper/lower terminal of cylinder type body is closed, the most evenly distributed along body of heat exchanger tube.Heat smoke blast pipe, heat smoke discharge pipe are connected with intrinsic heat exchanging chamber；Heat modification medium ingress pipe, heat modification medium delivery line are connected with changing pipe, and medium flows through heat exchanger tube under the effect of wind deflector (not shown).

As Fig. 9,10, heat smoke blast pipe 24, heat modification medium ingress pipe 26 are arranged on the lower end of body, are separated from each other, do not interfere with each other；Heat modification medium ingress pipe is positioned at one end of body lower end and is connected by flange with heat exchanger tube, the heat modification medium in heat modification device is imported heat-exchanger rig, carries out heat exchange, it is thus achieved that the thermal medium that heat modification processes；Heat smoke discharge pipe 25, heat modification medium delivery line 27 are arranged on the upper end of body, are separated from each other, do not interfere with each other；Heat modification medium delivery line is positioned at the other end of body upper end and is connected by flange with heat exchanger tube, the thermal medium that heat modification after i.e. absorbing heat smoke heat after heat exchange processes derives heat-exchanger rig, under the drive of heat supply blower fan, heat modification medium after heat exchange enters in heat modification device, and the heat modification carrying out timber processes.

The heat smoke that gasified combustion apparatus produces is under the effect of smoke exhaust fan 51, heat exchanging chamber is entered from the heat smoke blast pipe 24 of body lower end, from lower from flow through heat exchanger tube, carry out heat exchange with the heat modification medium in heat exchanger tube, then flow out from the heat smoke discharge pipe 25 being positioned at body upper end under the drive of smoke exhaust fan；Heat modification to be heated processes medium under the drive of heat supply blower fan 52, enter in the heat exchanger tube in heat exchange alveolus from the heat modification medium ingress pipe 26 of body lower end, after absorbing the heat of heat smoke, flow out heat-exchanger rig from the heat modification medium delivery line 27 being positioned at body upper end, enter annealing device.

In this area, existing known any heat exchanger carrying out air heat exchange is all applicable to this utility model.The gas heat exchanger that this utility model uses selects shell-and-tube heat exchanger.

Such as Fig. 1,11,12, heat modification device 3 include that be made up of heat-insulating material, overall in cuboid-type or the heat modification of square build processes housing 31, the thermal chamber 32 of enclosure interior be cross section be rectangle cavity, be arranged on thermal chamber internal upper part and thermal medium blast pipe 34 near housing front side wall and be positioned at thermal chamber rear portion and near housing rear wall backwind tube 36, be opened in the heat modification exhanst gas outlet 30 on housing rear wall top.

Arranging closing door 33 to be opened/closed on front side of housing, rear side is closed.Blast pipe lies in a horizontal plane in thermal chamber, near the top of closing door, i.e. blast pipe is fixedly mounted on the top of thermal chamber, the side of close closing door (i.e. on front side of housing), parallels with the front side of housing (i.e. blast pipe is along closing door horizontal positioned).One end of blast pipe is closed, and the other end is connected with the heat modification medium delivery line 27 of heat-exchanger rig by the pipeline that connects being made up of insulation material, and the heat-treatment medium absorbing heat in heat-exchanger rig is imported heat modification device.

On housing left side wall or the top of right side wall, fixedly mounting at least 1 thermal medium blast pipe near the side of closing door (i.e. on front side of housing), blast pipe, along closing door 33 horizontal positioned, is fixed on the top of thermal chamber.One end of blast pipe is closed, the other end passes from the top of housing left side wall or right side wall, it is connected with the connection pipeline being made up of insulation material, it is connected with the heat modification medium delivery line of heat-exchanger rig by connecting pipeline, form the circulation passage of heat modification medium, the heat modification medium after heat exchange is imported heat modification device.

In thermal chamber, the length of blast pipe matches with the length of thermal chamber front side wall；And multiple air intake nozzles 35 towards material heap 38 to be modified are uniformly installed on the surface of blast pipe pipeline, for spraying heat-treatment medium to material heap, heat material heap.

In this utility model detailed description of the invention, thermal medium blast pipe passes from the top of housing left side wall with being connected one end that pipeline is connected, and is connected with heat modification medium delivery line, is sent into by the heat-treatment medium after heat exchange inside thermal chamber, heat wood.

Blast pipe is connected towards the air intake nozzle installed uniform on the direction of material heap is fixing with blast pipe, heat-treatment medium is sprayed equably to material heap, to guarantee uniformly to flow to the heat-treatment medium introducing in thermal chamber from blast pipe material heap 38, improve the uniformity in temperature field in material heap heat treatment process.

Inside thermal chamber, on rear side of the housing, (i.e. blind end) is horizontally disposed with many roots/group of (at least 3 roots/group) backwind tubes 36, and backwind tube is along the most horizontally arranged on rear side of housing (Figure 11,12).Many backwind tubes arrange from middle and upper part to bottom even on rear side of housing, are divided into upper, middle and lower backwind tube/group, and the arrangement height of upper, middle and lower backwind tube/group matches with the height in the upper, middle and lower portion of pending material heap.It is divided into 3 groups, upper, middle and lower, i.e. heat modification process chamber upper, middle and lower backwind tube group according to order from top to down in this utility model thermal chamber along many backwind tubes of horizontal positioned on rear side of housing.Heat in this utility model detailed description of the invention arranges 3 backwind tubes, i.e. upper, middle and lower backwind tube in changing surname process chamber.

Backwind tube is the most horizontally arranged along the rear side of thermal chamber, it is positioned at inside thermal chamber, one end is closed, the other end passes housing left side wall or right side wall, project outward from the housing, connect with the thermal medium return air house steward 39 being made up of insulation material, through return air house steward, heat modification medium is derived annealing device.The length of the backwind tube in thermal chamber matches with the length of the rear wall of thermal chamber；And backwind tube is positioned on the surface of the pipeline within thermal chamber and offers multiple return air inlet 37, return air inlet is evenly distributed on the surface of backwind tube, and uniform collection is by the heat-treatment medium after material heap.

The inside of one end that every backwind tube projects outward from the housing arranges air returning valve 361, opening and closing or the opening degree of air returning valve is controlled by control system (not shown), regulation flows into the flow of the modification medium of material heap, control the Uniformity of Temperature Field of modified material heap, i.e. by the air returning valve opening and closing on each backwind tube pipeline or opening degree, realize single root/group of backwind tube individually to adjust and many roots/group of backwind tubes are applied in combination, to ensure the uniformity of Wooden modifying treatment temperature in thermal chamber.

The heat modification medium delivery line of heat-exchanger rig is connected with the heat modification medium blast pipe on the housing of heat modification device；The heat modification medium ingress pipe of heat-exchanger rig is connected with the thermal medium return air house steward of heat modification device (can also directly be connected with backwind tube).The heat modification medium absorbing heat after heat exchange processes flows out from heat modification medium delivery line, thermal medium blast pipe from heat modification device case top enters in thermal chamber, through air intake nozzle to treating that the material heap that heat modification processes uniformly sprays heat-treatment medium, heat-treatment medium passes and heats material heap, under the effect of heat supply blower fan, the collection of the return air inlet on backwind tube, enter backwind tube, flow into thermal medium return air house steward, heat modification medium ingress pipe through heat-exchanger rig enters the heat exchanger tube of heat-exchanger rig again, carry out heat exchange, reuptake heat, form Wooden modifying and process thermal medium, enter back into heat modification device.

At least 1 modified exhanst gas outlet 30 is offered on top on rear side of housing, modified exhanst gas outlet is connected with the washing pipeline of described volatile organic matter (VOC) collection device 4, and the flue gas containing VOC discharged in heat modification processing procedure by timber derives heat modification device.

Temperature sensor it is additionally provided with, for measuring the temperature of timber in heat modification processing procedure in thermal chamber.Temperature sensor is separately positioned on entering of the material heap paralleled with housing rear wall, go out in the plane of material heap and on the median plane of material heap, arrange from top to bottom, measure the upper of material heap respectively, in, the temperature of bottom, i.e. entering at the material heap paralleled with the rear wall of housing, go out in the plane of material heap and be respectively provided with 3 groups of temperature sensors from top to bottom (i.e. in the centre position of material heap from top to bottom on median plane, top at material heap, middle part, bottom is respectively provided with 1 group of temperature sensor, for measuring material heap, in, bottom timber is in heat modification temperature T of heat modification processing procedure₁、T₂、T₃)。

Also include regulating and controlling that air returning valve is opened/closed, the control system (not shown) of air returning valve opening degree, control system is made up of the control chamber being arranged on outside heat modification device, control chamber is connected with temperature sensor, electronic return air valve by circuit, by measuring the temperature in material heap upper, middle and lower portion, regulate opening and closing or the opening degree of electronic return air valve, the flowing velocity of regulation heat-treatment medium, the uniformity of heat treatment temperature in adjustment thermal chamber.By the opening degree of the return air valve that control is arranged on the backwind tube pipeline of heat modification device, it is achieved the regulation and control of the uniformity for the treatment of of wood temperature in timber heat modification processing procedure；By controlling being turned on and off of heat supply blower fan, it is achieved the heat supply of heat treated room, heat modification process.

As shown in Fig. 1,13,14, cylindrical VOC (VOC) washing 42, at least 1 water pump 43 and Duo Gen connecting water pipe 44 of pipeline that volatile organic matter (VOC) collection device 4 is fixed on tank top by 41, at least 1, the water tank holding VOC absorbing liquid forms, and water tank, washing pipeline, water pump are connected to each other and carry VOC absorbing liquid by connecting water pipe.

The water tank holding and collecting VOC absorbing liquid is the cuboid or cylindrical container closed, and top seals, and on the one hand can prevent from polluting, on the other hand can make gas more good dissolving.In this utility model, water tank is cuboid-type.

The absorbing liquid (the VOC absorbing liquid in this utility model embodiment is water) absorbing VOC is deposited in water tank, the middle and lower part of water tank is provided with water outlet of water tank 46, outlet is connected with water pump by connecting water pipe, water is under the drive of water pump, outlet from water tank bottom flows out, water pump is entered by connecting water pipe, i.e. VOC absorbs water liquid under the effect of water pump, after the outlet of water pump flows out, enter VOC by connecting water pipe and wash pipeline, spray water in washing pipeline, absorb the VOC in gas, make VOC be dissolved in water, fall back to water tank.

VOC washing pipeline, for spraying water liquid to the gas containing VOC flowing into water purge passage, absorbs VOC therein, and water liquid is imported water tank；VOC washing pipeline is erected at the top of water tank, under the water surface 49 that one end of VOC washing pipeline is immersed in water tank, forms VOC and absorbs closed channel；Its other end is that VOC gas access 47 is connected with the modified exhanst gas outlet of heat modification device, timber heat modification processes the VOC described in the importing of the gas containing VOC produced and washes pipeline.

VOC washing pipeline submergence one end under the water surface is horn-like, and horn-like top can prevent suck-back, and increases absorption area；VOC washing pipe interior arranges at least one rotary nozzle 45, sprays water, be used for absorbing VOC in VOC washing pipeline；The setting height(from bottom) of shower nozzle is positioned on the water surface of water tank, i.e. shower nozzle is positioned at the top of the water tank water surface.

In this utility model VOC collection device, VOC washing pipeline selects 2, is fixed on tank top by welding manner, is erected at water tank upper.It is respectively provided with 3 rotary nozzles from top to bottom in every VOC washing pipeline, when water spray in washing pipeline, increases the contact area of water liquid and VOC, can be with Arbitrary Rotation, Omnibearing absorbing VOC, do not stay any dead angle, absorption efficiency is high.In addition to rotary nozzle, other any existing shower nozzles are all applicable to this utility model.

The water inlet of the water pump of pumping VOC absorbing liquid is connected by the outlet of connecting water pipe with water tank bottom；Outlet is connected with the shower nozzle in VOC washing pipeline by connecting water pipe.VOC absorbing liquid (water liquid) in water tank flows through water pump from water tank bottom outlet under the effect of water pump, flow out from pump outlet, again through connecting water pipe water conservancy diversion, the shower nozzle of eminence delivered to by the water pump that will be located in bottom, moisture in connecting water pipe flow to be positioned at through at least one three-way valve being arranged on connecting water pipe or cross valve (not indicating in accompanying drawing) the washing pipeline shower nozzle of eminence the most again, after the injection of water liquid, drops down onto water tank further along washing back of pipeline.

The water liquid of shower nozzle injection is not only sufficiently mixed with the gas containing VOC in washing pipeline, absorb and collect VOC, extremely wash in pipeline through water pump pumps again after falling back to water tank, re-absorption VOC, so move in circles, repeatedly collect VOC, moreover it is possible to the mixed gas containing VOC that timber high-temperature hot perception discharges is cooled, make water solublity, acidic volatile Organic substance be readily absorbed by liquid to absorb, increase the dissolubility in water.

Blower fan system includes heat supply blower fan and smoke exhaust fan.On the connection pipeline that the heat modification medium ingress pipe of backwind tube and described heat-exchanger rig that heat supply blower fan is arranged on described heat modification device is connected, effect by heat supply blower fan, after being processed by heat modification, medium is extracted out from the backwind tube of heat modification device, heat-exchanger rig is entered through heat modification medium ingress pipe, carry out heat exchange, medium after heat exchange is extracted out from heat modification medium delivery line again, enters the thermal chamber of heat modification device, heat wood through blast pipe；Described smoke exhaust fan is arranged on the connection pipeline being connected with described heat smoke discharge pipe, and the heat smoke produced by gasified combustion apparatus entering described heat-exchanger rig is discharged heat-exchanger rig after the heat exchange.

1-14 describes the work process of this this utility model timber heat modification processing equipment in detail below in conjunction with the accompanying drawings.

One, gasification, and combustion energy supply

In the stage that the use heat energy such as timber preheating, intensification are more, such as Fig. 6, close the just burning chimney valve just burnt in floss hole of the gasification combustion furnace left and right sides, open top cover, adding in gasification furnace by biomass fuel (such as agriculture and forestry organic waste material, wood machining residues etc.) from charge door, opened smoke-discharging blower fan enters oxygen valve with the auxiliary in the auxiliary oxygen feeding tube opening the left and right sides；Fresh air enters from charge door, and fuel is gasification counter-combustion in upper combustion chamber, continuously generates combustible gas and plants source biomass charcoal；

Combustible gas and biomass carbon enter lower combustion chamber through fire grate assembly, enter the oxygen of lower combustion chamber through auxiliary oxygen feeding tube from auxiliary oxygen feeder so that combustible gas and biomass carbon fully burn, a large amount of heat smoke of generation.Under the drive of smoke exhaust fan, sequentially pass through exhanst gas outlet, heat smoke passage, heat smoke blast pipe enter heat-exchanger rig carry out heat exchange process.

Such as Fig. 7, when needs just burn work or in the case of only needing insulation or equipment to have a power failure, close top cover, open the just burning chimney valve just burnt in floss hole of the left and right sides, the auxiliary simultaneously closed off in the auxiliary oxygen feeding tube of the left and right sides enters oxygen valve, opening the upper and lower fire door of body of heater, the oxygen during just burning supplies from upper and lower fire door；Fuel carries out normal burning gasification, and combustion in upper combustion chamber, the heat smoke produced is under the effect of smoke exhaust fan or the natural air exhaust of heat smoke passage, the auxiliary oxygen feeding tube just burning exhaust gases passes, the left and right sides of the left and right sides is flowed through the most successively from the floss hole that just burns of the left and right sides being positioned at flue top, the left and right sides auxiliary oxygen feeder enter lower combustion chamber, then sequentially pass through exhanst gas outlet, heat smoke passage, heat smoke blast pipe enter heat-exchanger rig carry out heat exchange process.

Two, heat exchange process

In this area, existing known any heat exchanger carrying out air heat exchange is all applicable to this utility model.The gas heat exchanger that this utility model uses selects surface-type heat exchanger to carry out heat exchange, generally selects shell-and-tube heat exchanger.

Three, timber heat modification processes

The temperature that in the thermal chamber of timber heat modification device of the present utility model, timber heat modification processes is set as T；The temperature sensor (selection thermocouple temperature sensor) of automatic control system measures the temperature (T of the timber being arranged on three different parts in upper, middle and lower treating that heat modification processes material heap₁、T₂、T₃)。

1, by be sawed into juggle treat heat modification process timber pile up in the thermal chamber of heat modification device according to this area drying of wood mode, heap pile of lumber, close closing door；

2, according to heat-treatment medium flowing direction (i.e. from the direction of the front side of thermal chamber to rear side, namely thermal medium blast pipe is to the direction of backwind tube), least one set sets of temperature sensors is set at the turnover material heap of material heap and material heap centre position and (is i.e. parallel on front side of heat treatment housing or the plane of turnover material heap of rear wall at material heap, and be parallel to front side or rear wall mid-plane position from top to bottom, upper at material heap, in, bottom is respectively provided with at least 3 group temperature sensors), for measuring material heap, in, the timber of lower three different parts is at the real time temperature of heat modification processing procedure, measure corresponding real time temperature to average survey, it is designated as on material heap, in, heat modification temperature T of lower three different parts₁、T₂、T₃；

3, opening heat supply blower fan, automatic control system, temperature T processed by timber heat modification in automatic control system setting thermal chamber, by the timber real time temperature (T at 3 positions, temperature sensor the real time measure material heap upper, middle and lower₁、T₂、T₃).By the return air valve opening in the backwind tube of upper, middle and lower part, be held open angle be 60 ° (i.e. be 60 ° with the angle of valve location when closing), until the central temperature of material heap is increased to set modification temperature T；Timber middle portion temperature T₂Remain after consistent with the timber heat modification temperature T-phase set that the opening angle of air returning valve in the middle part backwind tube corresponding with material heap medium position is as 60 °, in the middle part of i.e. keeping, the opening angle of the air returning valve in backwind tube is always 60 °, so that timber middle portion temperature T₂Keep consistent with timber heat modification temperature T set.

4, after Wood temperature reaches T in heat modification device, under conditions of temperature remains T, carrying out heat preservation hot modification according to every cm thick timber isothermal holding 2h, in insulating process, automatic control system is according to temperature T measured₁、T₂、T₃Setting heat modification temperature T with timber to compare, then the opening and closing of air returning valve or opening degree in regulation backwind tube, process timber heat supply, modification timber for heat modification, keep the uniformity of heat modification temperature；

1. T is worked as₁-T₂During ＞ 30 DEG C, close the electronic return air valve in the top backwind tube corresponding with material heap upper position, reduce rapidly the flow of the heat modification medium flowing into timber top, quickly reduce timber top heat modification temperature, make timber top heat modification temperature consistent with middle part Wood temperature, improve the uniformity of heat modification temperature；

2. as 10 DEG C of ＜ T₁-T₂When≤30 DEG C, regulate the electronic return air valve opening angle in the top backwind tube corresponding with material heap upper position be 45 ° (i.e. be 45 ° with the angle of valve location when closing), turn down the opening degree of return air valve, reduce the flow of the heat modification medium flowing into timber top, reduce timber top heat modification temperature, make timber top heat modification temperature consistent with middle part Wood temperature, improve the uniformity of heat modification temperature；

3. as-10 DEG C≤T₁-T₂When≤10 DEG C, regulate the electronic return air valve opening angle in the top backwind tube corresponding with material heap upper position be 60 ° (i.e. be 60 ° with the angle of valve location when closing), regulate the motor-operated control valve in the middle part backwind tube that the opening degree of air returning valve is corresponding with material heap medium position in the top backwind tube corresponding with material heap upper position consistent；

4. as-30 DEG C≤T₁-T₂During ＜-10 DEG C, regulate the electronic return air valve opening angle in the top backwind tube corresponding with material heap upper position be 75 ° (i.e. be 75 ° with the angle of valve location when closing), increase the flow of the heat modification medium flowing into timber top, improve timber top heat modification temperature, make timber top heat modification temperature consistent with middle part Wood temperature, improve the uniformity of heat modification temperature；

5. T is worked as₁-T₂During ＜-30 DEG C, to regulate the electronic return air valve opening angle in the top backwind tube corresponding with material heap upper position be 90 ° (is i.e. 90 ° with the angle of valve location when closing, i.e. valve wide open), increase rapidly the flow of the heat modification medium flowing into timber top, improve timber top heat modification temperature；

6. T is worked as₃-T₂During ＞ 30 DEG C, close the electronic return air valve in the bottom backwind tube corresponding with material heap lower position, reduce rapidly the flow of the heat modification medium flowing into timber bottom, quickly reduce timber bottom heat modification temperature, make timber bottom heat modification temperature consistent with middle part Wood temperature, improve the uniformity of heat modification temperature；

7. as 10 DEG C of ＜ T₃-T₂When≤30 DEG C, regulate the electronic return air valve opening angle in the bottom backwind tube corresponding with material heap lower position be 45 ° (i.e. be 45 ° with the angle of valve location when closing), turn down the opening degree of return air valve, reduce the flow of the heat modification medium flowing into timber bottom, reduce timber bottom heat modification temperature, make timber bottom heat modification temperature consistent with middle part Wood temperature, improve the uniformity of heat modification temperature；

8. as-10 DEG C≤T₃-T₂When≤10 DEG C, regulate the electronic return air valve opening angle in the bottom backwind tube corresponding with material heap lower position be 60 ° (i.e. be 60 ° with the angle of valve location when closing), regulate the motor-operated control valve in the middle part backwind tube that the opening degree of air returning valve is corresponding with material heap medium position in the bottom backwind tube corresponding with material heap lower position consistent；

9. as-30 DEG C≤T₃-T₂During ＜-10 DEG C, regulate the electronic return air valve opening angle in the bottom backwind tube corresponding with material heap lower position be 75 ° (i.e. be 75 ° with the angle of valve location when closing), increase the flow of the heat modification medium flowing into timber bottom, improve timber bottom heat modification temperature, make timber bottom heat modification temperature consistent with middle part Wood temperature, improve the uniformity of heat modification temperature；

10. T is worked as₃-T₂During ＜-30 DEG C, to regulate the electronic return air valve opening angle in the bottom backwind tube corresponding with material heap lower position be 90 ° (is i.e. 90 ° with the angle of valve location when closing, i.e. valve wide open), increase rapidly the flow of the heat modification medium flowing into timber bottom, quickly improve timber top heat modification temperature.

5, in heat modification processing procedure, after every cm thick timber heat modification isothermal holding 2h, close heat supply blower fan, lower the temperature, damping, when temperature is less than 60 DEG C, kiln discharge.

Four, VOC collection processes

The heat modification flue gas produced in timber heat modification processing procedure enters VOC through piping after the modified exhanst gas outlet of heat modification device is discharged and washes pipeline, during modified flue gas containing VOC flows from the top down along washing pipeline, shower nozzle injection VOC absorbing liquid (usually water) in washing pipeline, absorb the VOC in modified flue gas, absorb the absorbing liquid after VOC to fall after rise to water tank along washing conduit, absorbing liquid in water tank is under the effect of water pump, constantly it is pumped to wash the shower nozzle in pipeline from lower by the water in water tank, fill-before-fire, re-absorption VOC, iterative cycles, until heat modification device is discharged without heat smoke, i.e. complete the collection of VOC.

Claims (8)

1. a timber heat modification processing equipment, is characterized in that, including the gasified combustion apparatus being sequentially connected with by connection pipeline, heat-exchanger rig, heat modification device, volatile organic matter collection device and the blower fan system being connected with heat-exchanger rig, wherein

Described gasified combustion apparatus includes counter-burning type gasification furnace, heat smoke passage, just burns exhaust gases passes and be positioned at the fire grate assembly of gasification furnace, wherein: described heat smoke passage is positioned at the outside of the rear wall of described gasification furnace and integral with gasification furnace body of heater be connected and connect with described gasification furnace；The described exhaust gases passes that just burning is arranged on the outside of left and right sides wall of described gasification furnace and integral with gasification furnace body of heater be connected and connect with described gasification furnace；Described fire grate assembly is fixed on the middle part of described gasification furnace, and gasification furnace is divided into upper and lower combustor；

Described heat modification device includes overall in cuboid-type or the square housing of build, thermal chamber, blast pipe, backwind tube, modified exhanst gas outlet, and wherein, the rear side of described housing is closed, and front side arranges closing door to be opened/closed；The thermal chamber of enclosure interior be cross section be the cavity of rectangle；Described blast pipe is fixed on the top of thermal chamber and near the front side wall of housing and along front side wall horizontal positioned；Described backwind tube is arranged on inside thermal chamber, near housing rear wall and the rear wall horizontal positioned along housing；Described modified exhanst gas outlet is arranged on the top of housing rear wall, discharges heat modification and processes the flue gas produced.

2. equipment as claimed in claim 1, is characterized in that, described counter-burning type gasification furnace includes body of heater, flue, exhanst gas outlet, fire grate assembly, and wherein said body of heater is overall in cuboid-type or square build；The rectangular in cross-section of the flue cavity of furnace interior, forms gasification combustion chamber；Described fire grate assembly is arranged on the middle part of flue, and flue cavity is divided into upper and lower combustor；Described exhanst gas outlet is arranged on the rear wall of lower combustion chamber.

3. equipment as claimed in claim 2, it is characterized in that, described fire grate assembly includes in flat fire grate main body and the upper and lower steel pipe being positioned at the upper and lower two ends of fire grate main body, wherein, described fire grate main body is formed by many steel pipes are arranged in parallel, and spaced-apart relation between adjacent steel pipe；Described upper and lower steel pipe is connected in one with described fire grate main body steel pipe, and connects each other in junction, forms water stream channel.

4. equipment as claimed in claim 1, is characterized in that, described blast pipe is positioned at the length of the length of thermal chamber and the horizontal direction of the front side wall of thermal chamber and matches；And blast pipe is positioned on the surface of the pipeline within thermal chamber and offers multiple air intake nozzle towards pending timber.

5. equipment as claimed in claim 1, it is characterized in that, described backwind tube at least 3, along the horizontal direction of housing rear wall under upper horizontally arranged, the top of pending timber, middle part, the height of bottom adapt the setting height(from bottom) of 3 backwind tubes with in thermal chamber respectively.

6. equipment as claimed in claim 5, is characterized in that, described backwind tube is positioned at the length of the length of thermal chamber and the horizontal direction of the rear wall of thermal chamber and matches；And on the pipe surface of backwind tube, offer multiple return air inlet.

7. the equipment as described in any one in claim 1-6, it is characterized in that, described volatile organic matter collection device includes holding the water tank of VOC absorbing liquid, at least 1 VOC washing pipeline, at least 1 water pump and Duo Gen water pipe, wherein, VOC washing pipeline is erected at the top of water tank, under the liquid level of the VOC absorbing liquid that one end of VOC washing pipeline holds in being immersed in water tank, form VOC and absorb closed channel；Described water pump is connected with described water tank, VOC washing pipeline by water pipe, the absorbing liquid in water tank is pumped in VOC washing pipeline, absorbs VOC.

8. equipment as claimed in claim 7, is characterized in that, described VOC washing pipe interior arranges at least one shower nozzle, sprays absorbing liquid, make absorbing liquid be fully contacted with the gas containing VOC, absorb the VOC in gas in VOC washing pipeline.