CN106895436B - The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device - Google Patents
The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device Download PDFInfo
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- CN106895436B CN106895436B CN201710174279.9A CN201710174279A CN106895436B CN 106895436 B CN106895436 B CN 106895436B CN 201710174279 A CN201710174279 A CN 201710174279A CN 106895436 B CN106895436 B CN 106895436B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/007—Regulating air supply or draught using mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
- F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
- F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/1003—Processes to make pulverulent fuels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/202—Feeding/conveying devices using screws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/16—Measuring temperature burner temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device, belongs to biomass combustion technical field.It is characterized in that：Blast pipe（27）Both ends respectively with pond of glowing（20）Outside is connected to, blast pipe（27）Tube wall be equipped with venthole, blast pipe（27）It is inside connected with moving air, to pond of glowing（20）It is cooling, blast pipe（27）Interior partial air enters pond of glowing（20）It is interior combustion-supporting, blast pipe（27）It is also connected with the air quantity adjusting unit for adjusting cooling air flow velocity, combustion-supporting regulating mechanism and blast pipe（27）It is connected, and adjusts unit with air quantity and match adjusting into pond of glowing（20）Interior combustion-supporting air quantity.The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device avoids fuel coking, slagging, reduce the volatilization of potassium sodium chlorine element, it reduces straw burning gas-solid pollutant emission problem from the root cause and equipment pickup problem, ash content can be directly used for farmland fertilizer.
Description
Technical field
The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device, belongs to biomass fuel burning technology
Field.
Background technology
Stalk accounts for the 70% of China's biomass energy, and it is that China's biomass is applicable to clean reliable straw burning technology
It is crucial.It is especially super if solid-state temperature is high when burning containing elements such as a large amount of potassium, sodium, chlorine in the biomass fuels such as stalk
When crossing 800 DEG C, when especially more than 800 DEG C, these elements can volatilize, soften.The potassium of volatilization, sodium, chlorine compound part meeting
Burner hearth heat exchanger surface condensation, form pickup, another part can form aerosol in flue gas emission to air.Bottom
The potassium sodium compound softened in ash can form slag, cause coking, the slagging of fuel, lead to the imperfect combustion of solid, be formed
A large amount of solid slag not only influences the reliability of burning, also causes lime-ash fertilizer to fail, cannot function as farmland fertilizer application.
Therefore, the high-temp combustion of stalk not only cause equipment contamination, bottom ash coking, smoke-exhaust pipeline blocking, gas-solid pollution problem, can also shadow
Cycle of the straw ash nutrient in Agro-ecological System is rung, soil depletion is caused to deteriorate.
To solve these problems, application No. is 201210027287.8 patents to disclose one kind by MgO, the compositions such as kaolin
Anti-coking agent and preparation method thereof.Application No. is 201210161528.8 patent disclose it is a kind of according to convection pass pressure
Difference starts push rod and drives hose, the method for the interior dust that cleans flues.Application No. is 201410216375.1 patents to disclose one
Kind is on chain furnace, biomass boiler dregs breaking device to be formed by dregs breaking tooth and cooling water pipe.These technology and equipments improve
The reliability of biomass combustion equipment, however not from source problem.To solve from the root cause the burnings such as stalk coking,
Clogging problems need the temperature for reducing solid phase fuel when burning.It discloses and carries application No. is 201210533851.3 patent
Charcoal glows the biomass boiler Efficient segmentation control combustion method and system in pond, it is desirable that and charcoal smoldering temperature is 400 DEG C ~ 600 DEG C, though
The temperature of charcoal burning is so given, but does not provide method or the measure of specific control ignition temperature.
During biomass combustion, when early period is dry and is pyrolyzed, due to endothermic effect, solid fuel self-temperature is not
It is high.Fuel solids portion temperature can be made drastically to rise due to the hot environment of violent exothermic effect and burner hearth to charcoal combustion phases
Height, accordingly control solid-state temperature when charcoal burning.Accumulation glows and the burning of charcoal fine particle can be made to maintain low temperature
State, and the ash that glows is without any coking, slagging phenomenon.（Referring to paper：1, He Fang, Frank Behrendt, Experimental
Investigation of natural smoldering of char granules in a packed bed, Fire
Safety Journal, 2011,46：406-413；2, He Fang, Yi Weiming, Li Zhihe etc., the moon of biomass internal-combustion characteristic
Combustion experimental study, Engineering Thermophysics journal, 2014,35：792-796）, however routine is accumulated when glowing to the later stage, is expanded by air
The influence of rate is dissipated, burning velocity is very slow.
Invention content
The technical problem to be solved by the present invention is to：It overcomes the deficiencies of the prior art and provide and a kind of realizing the fast of biomass carbon
Fast low temperature smouldering, reduce from the root cause the biomass of straw burning gas-solid pollutant emission problem and equipment pickup problem at
The device that glows of the powdered carbon fast low temperature burning of type fuel burner.
The technical solution adopted by the present invention to solve the technical problems is：The powdered carbon of the biomass molding fuel burning device
The device that glows of fast low temperature burning, it is characterised in that：Including pond and the combustion-supporting regulating mechanism of glowing, more are equipped in pond of glowing
The both ends of blast pipe, blast pipe are connected to on the outside of pond of glowing respectively, and the tube wall of blast pipe is equipped with venthole, is connected in blast pipe
Moving air, to pond cooling of glowing, the partial air in blast pipe enters combustion-supporting in pond of glowing, and blast pipe is also associated with use
Unit is adjusted in the air quantity for adjusting cooling air flow velocity, combustion-supporting regulating mechanism is connected with blast pipe, and adjusts unit phase with air quantity
Cooperation adjusts the combustion-supporting air quantity for entering and glowing in pond.
Preferably, the blast pipe includes inner and outer tubes, and venthole, inner tube are equipped on the tube wall of inner and outer tubes
It is connected to outside pond of glowing with the both ends of outer tube, air is connected with inner tube and drives interior in interior Bottomhole pressure, combustion-supporting regulating mechanism
Pipe moves axially, and adjusts unit with air quantity and match, and adjusts the combustion-supporting air quantity for entering and glowing in pond.
Preferably, the opposite both sides in the pond of glowing, which are respectively equipped with, glows pond inlet box and pond of glowing goes out gas tank, outer tube
Both ends respectively with glow pond inlet box and pond of glowing goes out gas tank and is connected to, the both ends of blast pipe respectively with pond inlet box and the moon of glowing
Combustion pond goes out gas tank connection.
Preferably, one end that the inner tube stretches into outer tube is by the gradual increased taper in end to mid diameter.
Preferably, the combustion-supporting regulating mechanism includes adjusting screw rod and adjusting nut, the axis of adjusting screw rod with it is interior
The axis of pipe is arranged in parallel and is connected with inner tube, and adjusting nut, which is rotatably arranged on, to glow outside pond, adjusting nut and adjusting screw rod phase
Cooperation drives inner tube axial movement.
Preferably, it is equipped with combustion-supporting adjustable plate on the outside of the pond of glowing, combustion-supporting adjustable plate is vertical with the axis of inner tube, more
Inner tube is connected with combustion-supporting adjustable plate simultaneously, and combustion-supporting regulating mechanism is connected with combustion-supporting adjustable plate and drives its axial movement, inner tube with
Combustion-supporting adjustable plate synchronizing moving.
Preferably, guiding mechanism is equipped between the combustion-supporting adjustable plate and pond of glowing.
Preferably, the guiding mechanism includes guide rod and pilot hole, and pilot hole is arranged on combustion-supporting adjustable plate, is oriented to
The axis of bar is parallel with the axis of inner tube, and guide rod one end is connected with pond of glowing, and the other end can be slid through pilot hole.
Preferably, the pond inner wall that glows is equipped with insulating layer.
Preferably, the rectangular box body that pond is upper and lower ends opening of glowing, powdered carbon enter pond of glowing, ash by suitable for reading
Divide and is discharged by lower mouth.
Compared with prior art, advantageous effect possessed by the present invention is：
1, it is equipped in the pond of glowing of the device that glows of the powdered carbon fast low temperature burning of this biomass molding fuel burning device
Blast pipe is connected with moving air in blast pipe, and the air in the blast pipe in pond of glowing has the function of cooling and combustion-supporting two kinds, air inlet
Air in pipe exchanges heat with powdered carbon, is cooling air, reduces the temperature in pond of glowing, the pond temperature that avoids glowing is excessively high cause coking,
The problem of slagging, blast pipe are equipped with venthole, and partial air enters pond of glowing through venthole and plays combustion-supporting effect, are combustion-supporting
Air, it is combustion-supporting to the powdered carbon for pond accumulation of entirely glowing, it ensure that the speed glowed.
2, inner and outer tubes move to axial, and adjust the facing area of the venthole of the venthole and outer tube in inner tube,
The intake of the combustion air in pond so that control is glowed, it is simple in structure, it is easy to operate.
3, it is by the gradual increased taper in end to mid diameter, to facilitate in adjusting that inner tube, which stretches into one end in outer tube,
The relative position of pipe and outer tube.
4, combustion-supporting regulating mechanism drives inner tube axial movement by combustion-supporting adjustable plate, to make more inner tube synchronizing movings,
It is easy to adjust, and using dispersion gas supply and it is cooling by the way of keep burning more uniform, additionally it is possible to part temperature in the pond that avoids glowing
Spend height.
Description of the drawings
Fig. 1 is the structural schematic diagram of device of glowing.
Fig. 2 is the structural schematic diagram of combustion-supporting regulating mechanism.
Fig. 3 is the vertical view schematic cross-sectional view of air inlet pipe.
Fig. 4 is the structural schematic diagram of biomass molding fuel burner.
Fig. 5 is the structural schematic diagram of crushing mechanism.
Fig. 6 is the scheme of installation of guide plate.
Fig. 7 is the connection diagram of guide plate mounting rod and burner hearth.
Fig. 8 is the scheme of installation of broken charcoal knife.
Fig. 9 is the stereoscopic schematic diagram of broken charcoal knife.
Figure 10 is the structural schematic diagram of cooling zone.
Figure 11 is the sealing schematic diagram of fire grate and burner hearth.
Figure 12 is the structural scheme of mechanism of combustion-supporting regulating mechanism in embodiment 2.
In figure：1, burner hearth 101, flame export 2, crushing mechanism 3, the device 4 that glows, cooling zone 5, ash hole
6, auger 7, access hole 8, feeding mechanism 9, fire grate support tube 10, gear ring 11, gear 12, support cylinder are exported
13, fire grate 1301, fire grate sealing plate 14, carrying roller 15, sealing drum 16, guide plate 1601, guide plate mounting hole
17, guide plate mounting rod 18, gear carbon slab 19, broken charcoal knife 1901, broken charcoal tooth 20, glow pond 21, adjusting nut
22, adjusting screw rod 23, the pond intake valve 24 that glows, pond air inlet pipe 25 of glowing, the pond inlet box 26 that glows, combustion-supporting adjustable plate
27, blast pipe 28, pond of glowing go out gas tank 29, the pond escape pipe 30 that glows, outer tube 31, inner tube 32, cooler bin 33,
Cooler bin go out gas tank 34, cooler bin escape pipe 35, cooler bin inlet box 36, cooler bin intake valve 37, cooler bin into
Tracheae 38, turnover case 39, heat exchanger tube 40, sealing shroud 41, combustion-supporting blast pipe 42, cooling blast pipe.
Specific implementation mode
Fig. 1 ~ 11 are highly preferred embodiment of the present invention, and 1 ~ 12 the present invention will be further described below in conjunction with the accompanying drawings.
A kind of device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device, including glow pond 20 with
And combustion-supporting regulating mechanism, pond 20 of glowing is interior to be equipped with more blast pipes 27, and the both ends of blast pipe 27 connect with 20 outside of pond of glowing respectively
Logical, the tube wall of blast pipe 27 is equipped with venthole, and moving air is connected in blast pipe 27, to be cooled down to pond 20 of glowing, air inlet
Partial air in pipe 27 enters combustion-supporting in pond 20 of glowing, and blast pipe 27 is also associated with the air quantity for adjusting cooling air flow velocity
Unit is adjusted, combustion-supporting regulating mechanism is connected with blast pipe 27, and adjusts unit with air quantity and match to adjust to enter and glow in pond 20
Combustion-supporting air quantity.The device that glows of the powdered carbon fast low temperature burning of this biomass molding fuel burning device glows in pond 20
Equipped with blast pipe 27, moving air is connected in blast pipe 27, the air in the blast pipe 27 in pond 20 of glowing have cooling and it is combustion-supporting
Two kinds of functions, the partial air in blast pipe 27 exchange heat with powdered carbon, are cooling air, reduce the temperature in pond 20 of glowing, avoid the moon
Fire 20 temperature of pond excessively high the problem of causing coking, slagging, blast pipe 27 is equipped with venthole, another part air through venthole into
Enter to pond 20 of glowing and play combustion-supporting effect, is combustion air, it is combustion-supporting to the powdered carbon for the accumulation of pond 20 of entirely glowing, it ensure that and glow
Speed.
Embodiment 1
As shown in Figure 1：Pond 20 glow for the rectangular box body of upper and lower ends opening, the inner wall in pond 20 of glowing, which is equipped with, to be kept the temperature
Layer, insulating layer is refractory material.The glow right side in pond 20 is equipped with and glows pond inlet box 25, and the pond inlet box 25 that glows is cuboid box
Body, the pond inlet box 25 that glows are connected with pond air inlet pipe 24 of glowing, and pond air inlet pipe 24 of glowing is for connecting wind turbine.It glows pond air inlet pipe
24, which are equipped with air quantity, adjusts unit, and it is the pond intake valve 23 that glows that air quantity, which adjusts unit,.The glow left side in pond 20 is equipped with pond of glowing and goes out
Gas tank 28, it is rectangular box body that pond of glowing, which goes out gas tank 28 also, and pond of glowing goes out gas tank 28 and is connected with the pond escape pipe 29 that glows, pond of glowing
Escape pipe 29 is arranged in the lower section of the burner hearth 1 of biomass molding fuel burning device and is connected to burner hearth 1.
Glow and be equipped at intervals with multiple blast pipes 27 in pond 20, blast pipe 27 is horizontally disposed, and the left end of blast pipe 27 with it is cloudy
Combustion pond goes out the connection of gas tank 28, and the right end of blast pipe 27 is connected to the pond inlet box 25 that glows.It is spaced on the downside tube wall of blast pipe 27
Equipped with multiple ventholes, the air to glow in pond inlet box 25 enters pond of glowing through blast pipe 27 and goes out in gas tank 28, and passes through
The powdered carbon accumulated in blast pipe 27 and pond 20 of glowing exchanges heat, and referred to as cooling air avoids to adjust the temperature glowed in pond 20
The temperature glowed in pond 20 is excessively high.Partial air is entered through the venthole on blast pipe 27 to glow in pond 20 and combustion-supporting, to help
Air is fired, unburnt gas, which is entered after fire grate 13 in the gas phase high temperature combustion zone of burner hearth 1, to burn.By glowing
Pond intake valve 23 can adjust the wind speed in blast pipe 27, and then adjust the flow velocity of cooling air, to adjust to pond 20 of glowing
Cooling effect.Using dispersion gas supply and it is cooling by the way of keep burning more uniform, additionally it is possible to part temperature in the pond 20 that avoids glowing
Spend height.
Adjusting for 20 temperature of pond of glowing can also realize that is, temperature detecting module connects by the way of automatic adjustment
PLC controller, to which the temperature data of detection to be uploaded in PLC controller in real time, adjusting screw rod 22 connects motor, PLC controls
Device processed is connected with the pond intake valve 23 that glows, and the flow velocity of the circulation air in blast pipe 27 is adjusted by pond regulating valve 23 of glowing,
The control mode for forming closed loop, to control automatically the temperature in pond 20 of glowing.
It glows and is additionally provided with temperature detecting module in pond 20, temperature detecting module can be temperature sensor, such as thermocouple, from
And the temperature glowed in pond 20 can be monitored in real time, ensure that the temperature glowed in pond 20 is less than 650 DEG C, ensures when powdered carbon glows not
Coking, slagging.Blast pipe 27 is also associated with combustion-supporting regulating mechanism, and combustion-supporting regulating mechanism is used to adjust the wind into glowing in pond 20
Amount.
As shown in Fig. 2 ~ 3：The blast pipe 27 to glow in pond 20 includes inner tube 31 and outer tube 30.The outer diameter of inner tube 31 is slightly smaller than
The internal diameter of outer tube 30, inner tube 31 are slidably mounted in outer tube 30, are equipped at intervals on the tube wall of 30 lower part of inner tube 31 and outer tube more
A venthole.The both ends of outer tube 30 and inner tube 31 respectively with glow pond inlet box 25 and pond of glowing goes out gas tank 28 and is connected to.It glows pond
Rectangular combustion-supporting adjustable plate 26 is equipped in inlet box 25, combustion-supporting adjustable plate 26 and the axis of inner tube 31 are vertically arranged, combustion-supporting tune
Section mechanism is connected with combustion-supporting adjustable plate 26, and combustion-supporting adjustable plate 26 is driven to be moved along the axis of inner tube 31, inner tube 31 and combustion-supporting tune
Save 26 synchronizing moving of plate, to adjust inner tube 31 and outer tube 30 venthole facing area, and with 23 phase of pond intake valve of glowing
Cooperation, and then the combustion-supporting air quantity for entering pond 20 of glowing is adjusted, to adjust the combustion-supporting effect to the powdered carbon in pond 20 that glows.It is interior
One end that pipe 31 stretches into outer tube 30 can be the taper being gradually reduced by middle part to end diameter, and inner tube 31 is adjusted to facilitate
With the relative position of outer tube 30.
It glows and is equipped with guiding mechanism between pond 20 and combustion-supporting adjustable plate 26, guiding mechanism includes guide rod and pilot hole.
The glow right side in pond 20 is equipped with the guide rod parallel with the axis of outer tube 30, and guide rod two is symmetricly set on pond 20 of glowing
Both sides.Combustion-supporting adjustable plate 26, which is equipped with, to be stretched into the matched pilot hole of guide rod, guide rod sliding in pilot hole and to combustion-supporting
The movement of adjustable plate 26 is oriented to.
Combustion-supporting regulating mechanism includes adjusting screw rod 22 and adjusting nut 21.The axis of adjusting screw rod 22 and the axis of guide rod
It is arranged in parallel, the left end of adjusting screw rod 22 is fixedly connected with the middle part of combustion-supporting adjustable plate 26, and the right end of adjusting screw rod 22 stretches out the moon
Fire pond inlet box 25.Glow pond inlet box 25 right side be equipped with for installation and adjustment nut 21 mounting portion, adjusting nut 21 can
Rotation is mounted on mounting portion, and adjusting nut 21 is matched with adjusting screw rod 22, thus to the position of combustion-supporting adjustable plate 26 into
Row is adjusted, and then adjusts the position of inner tube 31, and control enters the air capacity in pond 20 of glowing.
As shown in Figure 4：A kind of biomass molding fuel solid-phase low-temperature, gas phase high-temp combustion device, including from top to bottom according to
The burner hearth 1 of secondary setting, glow area 3 and cooling zone 4, the feed inlet in area 3 of glowing are connected to the discharge port of burner hearth 1, area 3 of glowing
Discharge port is connected to cooling zone 4, and the lower part of burner hearth 1 is equipped with fire grate 13, and fire grate 13 is equipped with for carrying out broken break to material
Broken mechanism 2, material is dry in 1 lower part of burner hearth and is pyrolyzed, and fire grate 13 is connected with rotating mechanism, is disturbed to biomass fuel,
And so that powdered carbon is fallen into area 3 of glowing and glow, while blocky biomass fuel being made to be moved to 13 middle part of fire grate, crushing mechanism 2 will be blocky
Biomass fuel, which is broken into after powdered carbon, to be fallen into area 3 of glowing and glows, and is discharged after the ash content of generation of glowing is cooling in cooling zone 4.This
Material drying and pyrolysis in burner hearth 1 of biomass molding fuel solid-phase low-temperature, gas phase high-temp combustion device, and enter area of glowing
It glows in 3, solves the agricultural wastes combustion apparatus cokings such as stalk, slagging, gas-solid pollutant emission height and ash fertilizer from the root cause
Problem of Failure, is particularly suitable for the higher agricultural wastes shaped fuel burning of China's ash content, and the ash content after burning is arranged after cooling
Go out, so as to avoid polluting the environment, and this biomass molding fuel solid-phase low-temperature, gas phase high-temp combustion device adapt to
In middle-size and small-size biomass molding fuel solid-phase low-temperature, gas phase high-temperature combustion equipment.
Burner hearth 1 is the cylinder of upper end closed, and the lower part of burner hearth 1 is discharge port.The top of burner hearth 1 is equipped with flame export 101,
Flame export 101 is arranged in the side of burner hearth 1, and is arranged along the tangential direction of burner hearth 1.
The middle part of burner hearth 1 is connected with feeding mechanism 8, and feeding mechanism 8 includes feed hopper and input auger.Input auger water
Flat setting, and the discharge end for inputting auger is connected to 1 inner cavity of burner hearth.Hopper is the open tubular of upper and lower ends, hopper setting
In the feed end of input auger, hopper is by accumulating the taper being gradually reduced up to down cross-sectional.Input auger be connected with feeding into
Tracheae, so as to play cooling effect to input auger and the biomass fuel inputted in auger, additionally it is possible to auxiliary biology
The charging of matter fuel, prevents safety accident.
1 lower part of burner hearth is equipped with crushing mechanism 2, and material crushes after the drying of 1 lower part of burner hearth and being pyrolyzed into crushing mechanism,
It is broken into after powdered carbon into glowing in area 3, to ensure material in the 3 internal combustion burn to ash of area that glows.The top of burner hearth 1 is gas phase
High temperature combustion zone, it is dry to burn in gas phase high temperature combustion zone with the gas generated in pyrolytic process, and gas phase high temperature combustion zone
Burning carries out radiant heating to material, to make dry materials and pyrolysis.
Area 3 of glowing includes glowing pond 20, and the suitable for reading and burner hearth 1 in pond 20 of glowing is connected, and lower mouth is connected to cooling zone 4.Powdered carbon
The accumulation in pond 20 of glowing, and glow in pond 20 of glowing.The glow left side in pond 20 is equipped with and glows pond escape pipe 29, and pond of glowing goes out
Tracheae 29 is connected to burner hearth 1, to be discharged into the gas phase high temperature combustion zone of burner hearth 1 to the gas that pond 20 cools down that glows.
Cooling zone 4 include cooler bin 32, cooler bin 32 be inverted quadrangular frustum pyramid shaped babinet, cooler bin 32 it is suitable for reading with glow
The lower mouth in pond 20 is tightly connected.The lower section of cooler bin 32 is equipped with ash discharge mechanism, and ash discharge mechanism includes output auger 6, exports auger 6
It is horizontally disposed, and the length of output auger 6 in the axial direction is equal with the width of cooler bin 32 in left-right direction, cooler bin 32
Lower mouth is connected to output auger 6, and the right end of output auger 6 is equipped with ash hole 5.Ash content after material burning is defeated through exporting auger 6
It send to ash hole 5, and is discharged by ash hole 5.Ash content is deposited in cooling zone 4 when work, and powdered carbon, which is deposited in, to glow in pond 20,
The rotating speed that auger 6 is exported by adjusting is the velocity of discharge of adjustable ash content, and then can adjust powdered carbon in pond 20 of glowing
Move down speed.
The right side of cooler bin 32 is equipped with cooler bin escape pipe 34, glows pond escape pipe 29 and cooler bin escape pipe 34 and stove
Thorax 1 is connected to, so as to which the gas after heat exchange to be passed through in the gas phase high temperature combustion zone of burner hearth 1.The right side of cooler bin 32 is also set
There is cooler bin air inlet pipe 37, cooler bin air inlet pipe 37 is for connecting wind turbine.
As shown in Figure 5：Crushing mechanism 2 includes guide plate 16 and broken charcoal knife 19.Fire grate 13 is circle, the diameter of fire grate 13
More than the outer diameter of burner hearth 1, fire grate 13 is rotatably installed in the lower section of burner hearth 1, and fire grate 13 is horizontally disposed, and fire grate 13 and burner hearth 1 are same
Axis is arranged.Guide plate 16 is that spiral gradually opens plate, i.e., guide plate 16 is in the helix that is projected as of horizontal plane, and the setting of guide plate 16 is in stove
The top of comb 13 is simultaneously coaxially disposed with fire grate 13, and the bottom surface of guide plate 16 is arranged with the top surface interval of fire grate 13, and guide plate 16 is logical
Guide plate mounting rod 17 is crossed in burner hearth 1.Broken charcoal knife 19 is arranged at the middle part of guide plate 16, and broken charcoal knife 19 and fire grate 13
It is connected.Fire grate 13, which is connected with, drives its rotating mechanism for being rotated about axis, and rotating mechanism drives fire grate 13 to rotate, rotation direction with
The spiral involute of guide plate 16 it is oppositely oriented, so that guide plate 16 and fire grate 13 is relatively rotated, to make guide plate 16 to object
Material is oriented to, and material is made to be moved to the middle part of guide plate 16, and by broken charcoal knife 19 by crushing material.In material moving process
In, the material of powdery, which can pass through fire grate 13 and fall into, to glow in pond 20, and block-like material is then passed through stove after broken charcoal knife 19 is broken
Comb 13, which enters, to glow in pond 20.Material enters burner hearth 1 and the time being moved in the middle part of guide plate 16 is consistent with pyrolysis time, therefore
When material is moved to 16 middle part of guide plate, material carbonizes completely.In the present embodiment, guide plate 16 is vertically
Width is 10 ~ 15cm, and the spacing of 16 bottom surface of guide plate and 13 top surface of fire grate is 2cm, reduces the friction of guide plate 16 and fire grate 13.
Fire grate 13 is mounted in fire grate support tube 9, and fire grate support tube 9 is cylinder, and the internal diameter of fire grate support tube 9 is slightly larger than stove
The diameter of comb 13, the lower part of fire grate support tube 9 bend inwards, and are formed for carrying on a shoulder pole the bracing ring for putting fire grate 13.Fire grate 13 is mounted on
In fire grate support tube 9, the outer load of fire grate 13 is placed on the bracing ring of fire grate support tube 9, and is bolted on bracing ring
On, fire grate 13 is rotated synchronously with fire grate support tube 9.Fire grate support tube 9 is connected with rotating mechanism.
The lower section of fire grate support tube 9 is coaxially provided with support cylinder 12, the diameter of support cylinder 12 and the diameter phase of burner hearth 1
Deng.The outer diameter of 12 upper end of support cylinder is slightly smaller than the internal diameter of 9 bracing ring of fire grate support tube, and 12 upper end of support cylinder is supported by fire grate
The lower end of cylinder 9 is stretched into fire grate support tube 9.The lower end of support cylinder 12 is bent outward, is formed supporting part, is rotated on supporting part
Carrying roller 14 is installed, carrying roller 14 has multiple, and uniformly at intervals on the supporting part of support cylinder 12, the bottom surface of fire grate support tube 9 is pressed
Tight carrying roller 14, to make fire grate 13 be rotatably installed in 12 upside of support cylinder.The downside of support cylinder 12 and pond 20 of glowing are suitable for reading
It is tightly connected.
Rotating mechanism includes motor, gear ring 10 and gear 11.The internal diameter of gear ring 10 is equal to the outer diameter of fire grate support tube 9,
Gear ring 10 is set in the outside of fire grate support tube 9 and is fixedly connected with fire grate support tube 9, and gear ring 10 and fire grate support tube 9 are coaxial
Setting.Gear 11 is arranged in the side of gear ring 10 and is engaged with gear ring 10.The output shaft of motor is connected with gear 11, and with moving teeth
11 rotation of wheel, to realize the rotation of fire grate 13.
13 lower part of fire grate is equipped with dispersal unit, and dispersal unit is for making powdered carbon dispersion and the uniformly heap in pond 20 of glowing
Product, to enable powdered carbon fully to burn faster.Dispersal unit is dispersion plate, and dispersion plate is fixed on fire grate 13 and with fire grate
13 rotate synchronously, and dispersion plate one end is arranged on the axis of fire grate 13, and dispersion plate is arranged along the radial direction of fire grate 13.Dispersion is single
Member can also be umbrella shape, multiple through-holes are equipped at intervals on dispersion plate, dispersion plate is coaxially disposed with fire grate 13, to make powdered carbon disperse
It falls.
As shown in Figure 6：Guide plate mounting rod 17 has four, and four guide plate mounting rods 17 are between the axis of guide plate 16
Every uniformly distributed.Guide plate 16 is equipped with the guide plate mounting hole 1601 for installing guide plate mounting rod 17, guide plate mounting rod 17
End pass through guide plate mounting hole 1601 after be fixedly connected with burner hearth 1, to by guide plate 16 be mounted on burner hearth 1 in, each
Guide plate mounting rod 17 is arranged along the radial direction of burner hearth 1.
The top of guide plate 16 be equipped with gear carbon slab 18, gear carbon slab 18 be arranged the top of broken charcoal knife 19 and with broken 19 phase of charcoal knife
Cooperation crushes material.Gear carbon slab 18 is plectane, and gear carbon slab 18 is fixed with the one end of guide plate mounting plate 17 far from burner hearth 1
Connection.Gear carbon slab 18 can avoid the charcoal at 16 middle part of guide plate from being spilled over to 16 side of guide plate, to influence the broken of charcoal.
As shown in Figure 7：Burner hearth 1 is equipped with to be stretched into 17 matched through-hole of guide plate mounting rod, guide plate mounting rod 17
It is fixedly connected in through-hole and with burner hearth 1.Sealing shroud 40 is equipped between guide plate mounting rod 17 and burner hearth 1, sealing shroud 40 is by rock wool
Equal elastic heat preservings sealing material is made.Due to the presence of sealing shroud 40, the diameter of the through-hole on burner hearth 1 is enable to be more than guide plate
The diameter of mounting rod 17, to make guide plate mounting rod 17 have 2mm's in the vertical direction together with guide plate 16 and gear carbon slab 18
One-movement-freedom-degree first relies on guide plate 16, guide plate mounting rod 17 and gear carbon slab 18 gravity pair of itself when charcoal and slag are broken
Material carries out attrition crushing, further relies on the gravity pressure broken material of burner hearth 1 again.
As shown in Fig. 8 ~ 9：Broken charcoal knife 19 is arranged at the middle part of guide plate 16.Broken charcoal knife 19 includes broken charcoal knife main body and broken
Charcoal tooth 1901, broken charcoal tooth 1901 is multiple to have, uniformly at intervals around broken charcoal knife main body.Broken 1901 one end of charcoal tooth is fixed on broken charcoal knife
In main body.In the present embodiment, there are four broken charcoal teeth 1901.Broken charcoal tooth 1901 is one end far from broken charcoal knife main body to broken charcoal knife
The arc of the front bending of 19 rotation directions.
As shown in Figure 10：The left and right sides of cooler bin 32 for ash content cooling is vertically arranged, and front and back the two of cooler bin 32
Side is gradually inside skewed from top to bottom.The upper end of cooler bin 32 and the sealed connection of pond 20 of glowing, lower end is twisted with output
Dragon 6 is tightly connected.
Cooling zone 4 further includes that cooler bin inlet box 35, cooler bin go out gas tank 33, turnover case 38 and heat exchanger tube 39.It is cooling
Case inlet box 35 and cooler bin go out the right side that gas tank 33 is arranged at cooler bin 32, and cooler bin inlet box 35 is arranged in cooler bin
Go out the downside of gas tank 33.Cooler bin inlet box 35 is connected with cooler bin air inlet pipe 37, and cooler bin air inlet pipe 37 is used to connect wind turbine,
Constantly enter cooler bin inlet box 35 to make air be in, to ensure that heat exchange efficiency, cooler bin air inlet pipe 37 are equipped with
Cooler bin intake valve 36, for adjusting intake velocity, to adjust heat exchange amount, so as to control it is cooling after ash content temperature.It is cooling
Case goes out gas tank 33 and is connected with cooler bin escape pipe 34, and the other end of cooler bin escape pipe 34 is connected to burner hearth 1, by the sky after heat exchange
Gas is delivered in the gas phase high temperature combustion zone of burner hearth 1.Turnover case 38 is arranged in the left side of cooler bin 32, and case 38 of transferring is vertical
The height in direction be equal to cooler bin go out gas tank 33 and cooler bin inlet box 35 vertical direction height and.The setting of heat exchanger tube 39 exists
In cooler bin 32, heat exchanger tube 39 is horizontally disposed in left-right direction.Heat exchanger tube 39 has spaced multiple, the general of multiple heat exchanger tubes 39
Cooler bin inlet box 35 goes out gas tank 33 with cooler bin and is connected to turnover case 38, turnover case 38.Air by cooler bin inlet box 35 into
Enter, and heat exchanger tube 39 is entered in turnover case 38, then goes out gas tank 33 with cooler bin through heat exchanger tube 39 again and be connected to, make ash content
Cooling is more uniform.
As shown in figure 11：The upside of fire grate 13 is equipped with upward fire grate sealing plate 1301, and it is close that downside is equipped with downward fire grate
Sealing plate 1301, fire grate sealing plate 1301 are cylindrical shape, and the downside of burner hearth 1 and the upside of support cylinder 12 are equipped with to be sealed with fire grate
The fire grate sealing plate 1301 of 1301 matched seal groove of plate, 13 upside of fire grate rotatably stretches into the seal groove of burner hearth 1, stove
The fire grate sealing plate 1301 of 13 downsides of combing stretches into the seal groove of support cylinder 12, by fire grate 13 and burner hearth 1 and fire grate 13 with
It is sealed between support cylinder 12.
The biomass molding fuel solid-phase low-temperature, gas phase method for high temperature combustion, include the following steps：
Step（1）, biomass fuel is dry and is pyrolyzed into charcoal, and the gas that dry and pyrolysis generates is on biomass fuel top
Burning；
Biomass is put into hopper, material is delivered in burner hearth 1 by input auger, and material is dry and hot in burner hearth 1
Solution is at charcoal.Gas after dry and pyrolysis burns in the gas phase high temperature combustion zone of burner hearth 1, and the temperature of gas phase high temperature combustion zone is high
In 800 DEG C, and material is heated by way of radiant heating, the flame for generation of burning is sprayed through flame export 101, Ke Yiyong
It is heated in industry or agricultural, and easy to use, improves capacity usage ratio.
Step（2）, the biomass fuel after pyrolysis be broken into grain size no more than 3mm powdered carbon accumulate；
Block-like charcoal under the action of guide plate 16 to the movement of the middle part of guide plate 16, when being moved to 16 middle part of guide plate by
Broken charcoal knife 19 is matched with gear carbon slab 18 and is crushed.Powdered carbon of the granularity less than 3mm falls into pond 20 of glowing directly through fire grate 13
Interior, charcoal of the granularity more than 3mm falls into pond 20 of glowing after passing through fire grate 13 when broken charcoal knife 19 is crushed to granularity less than or equal to 3mm
Interior accumulation, crushing mechanism 2 improve burning condition, it is ensured that after the completion of fuel thermal decomposition by movement to charcoal, disturbance and broken
Into area 3 of glowing.
Step（3）, air-breathing and cooling are conveyed into the powdered carbon of accumulation, so that powdered carbon is glowed into ash content, the temperature glowed
Not higher than 650 DEG C, the unburnt gas for generation of glowing is delivered to the burning of biomass fuel top；
Powdered carbon enters accumulation burning in pond 20 of glowing, and the partial air in inner tube 31, i.e. combustion air pass through inner tube successively
31, the venthole of outer tube 30 enters combustion-supporting in pond 20 of glowing, and it is 400 ~ 650 DEG C to make the temperature glowed in pond 20, generation of glowing
Unburnt gas enters burning in the gas phase high temperature combustion zone of burner hearth 1 upwards and after fire grate 13, avoids endless
The gaseous contamination environment to burn entirely.Cooling air is delivered to pond of glowing by the pond inlet box 25 that glows along inner tube 31 and goes out in gas tank 28,
And exchange heat with the powdered carbon accumulated in pond 20 of glowing when by inner tube 31, to adjust the temperature of the powdered carbon to glow in pond 20, temperature
Degree detection module monitors the temperature glowed in pond 20 in real time, and the air stream in inner tube 31 is adjusted by the pond intake valve 23 that glows
Speed, to adjust the temperature of the powdered carbon to glow in pond 20.The gas that pond goes out in gas tank 28 that glows is conveyed through the pond escape pipe 29 that glows
To the gas phase high temperature combustion zone of burner hearth 1, and pond of glowing goes out the temperature of the gas in gas tank 28 not less than 300 DEG C.
Step（4）, ash content is discharged after cooling.
Ash content enters cooler bin 32 and is deposited in cooler bin 32, and is changed by heat exchanger tube 39 and the air in heat exchanger tube 39
The temperature of ash content is cooled to 80 DEG C hereinafter, ash content after cooling is conveyed through exporting auger 6 to being cooled down to ash content by heat,
And be discharged by ash hole 5, the gas in heat exchanger tube 39 is delivered to the gas phase high temperature combustion zone in burner hearth 1 through cooler bin escape pipe 34
It is interior.Enter the gas in burner hearth 1 after exchanging heat with ash content through cooler bin escape pipe 34, temperature is not less than 300 DEG C.
Biomass fuel is dry in burner hearth and is pyrolyzed, and falls into pond 20 of glowing and glows immediately after the completion of pyrolysis, glows
Temperature is 400 DEG C ~ 650 DEG C, and referred to as solid-phase low-temperature glows；The gas that dry and pyrolysis generates burns in gas phase high-temperature region, by
In by glowing pond escape pipe 29 and the temperature of gas that cooler bin escape pipe 34 is passed through 1 top of burner hearth is higher than 300 DEG C, therefore gas
The temperature of burning is very high, is usually above 900 DEG C, referred to as gas phase high-temp combustion.
Embodiment 2
As shown in figure 12：Embodiment 2 and embodiment 1 difference lies in：The pond inlet box 25 that glows includes the combustion-supporting case in pond that glows
With the pond cooling box that glows, glow pond cooling box and the combustion-supporting case in pond that glows are independently arranged.Blast pipe 27 includes 41 He of combustion-supporting blast pipe
Cooling blast pipe 42, combustion-supporting blast pipe 41 and cooling blast pipe 42 are arranged at and glow in pond 20, and the right side of combustion-supporting blast pipe 41
It holds and is connected to the combustion-supporting case in pond of glowing, the right end of cooling blast pipe 42 is connected to the pond cooling box that glows.Combustion-supporting blast pipe 41 and cooling
The left end of blast pipe 42 goes out gas tank 28 with pond of glowing and is connected to.Combustion-supporting blast pipe 41 and the setting of the cooling interval of blast pipe 42, it is combustion-supporting
Blast pipe 41 is equipped with combustion-supporting venthole.
It glows the combustion-supporting case in pond and the pond cooling box that glows is connected to pond air inlet pipe 24 of glowing respectively, and the combustion-supporting case in pond of glowing and the moon
It is equipped with the pond intake valve 23 that glows between combustion pond cooling box, pond air inlet pipe 24 of glowing is connected to the combustion-supporting case in pond of glowing, and by helping
Combustion blast pipe 41 is to glow that provide combustion air combustion-supporting in pond 20；When the temperature in pond 20 of glowing is higher than 600 DEG C, pond air inlet of glowing
Pipe 24 is connected to the pond cooling box that glows, to be exchanged heat with the powdered carbon to glow in pond 20 by the cooling air in cooling blast pipe 42
The temperature for reducing the powdered carbon to glow in pond 20, to be the cooling of pond 20 of glowing.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, according to the technical essence of the invention to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (9)
1. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device, it is characterised in that：Including glowing
Pond（20）And combustion-supporting regulating mechanism, pond of glowing（20）It is interior to be equipped with more blast pipes（27）, blast pipe（27）Both ends respectively with
It glows pond（20）Outside is connected to, blast pipe（27）Tube wall be equipped with venthole, blast pipe（27）It is inside connected with moving air, to
To pond of glowing（20）It is cooling, blast pipe（27）Interior partial air enters pond of glowing（20）It is interior combustion-supporting, blast pipe（27）It is also connected with
The air quantity for being useful for adjusting cooling air flow velocity adjusts unit, combustion-supporting regulating mechanism and blast pipe（27）Be connected, and with air quantity tune
Section unit matches adjusting and enters pond of glowing（20）Interior combustion-supporting air quantity；The blast pipe（27）Including inner tube（31）With it is outer
Pipe（30）, inner tube（31）And outer tube（30）Tube wall on be equipped with venthole, inner tube（31）And outer tube（30）Both ends with the moon
Fire pond（20）Outer connection, air is in inner tube（31）Interior flowing, combustion-supporting regulating mechanism and inner tube（31）It is connected and drives inner tube（31）
Axial movement, and adjust unit with air quantity and match, it adjusts and enters pond of glowing（20）Interior combustion-supporting air quantity.
2. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 1,
It is characterized in that：The pond of glowing（20）Opposite both sides are respectively equipped with the pond inlet box that glows（25）Pond goes out gas tank with glowing
（28）, blast pipe（27）Both ends respectively with the pond inlet box that glows（25）Pond goes out gas tank with glowing（28）Connection.
3. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 1,
It is characterized in that：The inner tube（31）Stretch into outer tube（30）One end be by the gradual increased taper in end to mid diameter.
4. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 1,
It is characterized in that：The combustion-supporting regulating mechanism includes adjusting screw rod（22）And adjusting nut（21）, adjusting screw rod（22）'s
Axis and inner tube（31）Axis be arranged in parallel and and inner tube（31）It is connected, adjusting nut（21）It is rotatably arranged on pond of glowing（20）
Outside, adjusting nut（21）With adjusting screw rod（22）Match drive inner tube（31）Axial movement.
5. the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 1,2 or 4 is glowed
Device, it is characterised in that：The pond of glowing（20）Outside is equipped with combustion-supporting adjustable plate（26）, combustion-supporting adjustable plate（26）With inner tube
（31）Axis it is vertical, more inner tubes（31）Simultaneously with combustion-supporting adjustable plate（26）It is connected, combustion-supporting regulating mechanism and combustion-supporting adjustable plate
（26）It is connected and drives its axial movement, inner tube（31）With combustion-supporting adjustable plate（26）Synchronizing moving.
6. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 5,
It is characterized in that：The combustion-supporting adjustable plate（26）With pond of glowing（20）Between be equipped with guiding mechanism.
7. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 6,
It is characterized in that：The guiding mechanism includes guide rod and pilot hole, and pilot hole is arranged in combustion-supporting adjustable plate（26）On, it is oriented to
The axis and inner tube of bar（31）Axis it is parallel, guide rod one end and glow pond（20）It is connected, the other end can be slid through guiding
Hole.
8. the device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device according to claim 1,
It is characterized in that：The pond of glowing（20）Inner wall is equipped with insulating layer.
9. the dress that glows of the powdered carbon fast low temperature burning of the biomass molding fuel burning device according to claim 1 or 8
It sets, it is characterised in that：The pond of glowing（20）For the rectangular box body of upper and lower ends opening, powdered carbon enters pond of glowing by suitable for reading
（20）, ash content is discharged by lower mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710174279.9A CN106895436B (en) | 2017-03-22 | 2017-03-22 | The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device |
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|---|---|---|---|
| CN201710174279.9A CN106895436B (en) | 2017-03-22 | 2017-03-22 | The device that glows of the powdered carbon fast low temperature burning of biomass molding fuel burning device |
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| CN110030584B (en) * | 2019-04-11 | 2020-07-31 | 北华大学 | Electric heating smoldering furnace capable of adjusting wind power and displaying temperature in real time |
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| JPH07103439A (en) * | 1993-10-05 | 1995-04-18 | Ookawa Toransuteiru Kk | Combustion air supply device in carbonized gasification incinerator |
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| JP4261401B2 (en) * | 2004-03-24 | 2009-04-30 | 株式会社日立製作所 | Burner, fuel combustion method and boiler remodeling method |
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| JPH07103439A (en) * | 1993-10-05 | 1995-04-18 | Ookawa Toransuteiru Kk | Combustion air supply device in carbonized gasification incinerator |
| CA2151920A1 (en) * | 1993-10-15 | 1995-04-20 | Gary A. Towne | Waste recycling system |
| CN1238432A (en) * | 1999-04-30 | 1999-12-15 | 北京普照机电有限公司 | Air supply technology and apparatus for non-mechanical automatic lowering coal and controlling combustion in hot air furnace |
| CN1936427A (en) * | 2005-09-25 | 2007-03-28 | 山东理工大学 | Small indoor biological material hidden-burning heating stove |
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