CN104312595A - Tunnel-type carbonization furnace and carbonization method - Google Patents
Tunnel-type carbonization furnace and carbonization method Download PDFInfo
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- CN104312595A CN104312595A CN201410468051.7A CN201410468051A CN104312595A CN 104312595 A CN104312595 A CN 104312595A CN 201410468051 A CN201410468051 A CN 201410468051A CN 104312595 A CN104312595 A CN 104312595A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/02—Multi-step carbonising or coking processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention discloses a tunnel-type carbonization furnace and a carbonization method. The tunnel-type carbonization furnace comprises combustion tunnels composed of multiple combustion chambers horizontally connected with each other in series, a ventilation pipe is arranged on the each two paratactic combustion tunnels, a connection pipe communicated with the ventilation pipe is arranged above the combustion chamber of each one of the combustion tunnels, the ventilation pipe is orderly communicated with a waste gas pipe, a combustion gas pipe and a hot gas pipe along a direction from an inlet to an outlet of the combustion tunnel, multiple combustion tracks for kiln car sliding are arranged in the combustion tunnel, the inlet of the combustion tunnel is provided with a first furnace door, the combustion tunnel is provided with a first obstruction door, the first obstruction door is a combustion chamber distance away from the first furnace door, the outlet of the combustion tunnel is provided with a second furnace door, the combustion tunnel also is provided with a second obstruction door, the second obstruction door is a combustion chamber distance away from the first furnace door, and an input track and an output track connected to the combustion tracks are respectively arranged in front of the inlet and the outlet of the combustion tunnel.
Description
Technical field
The present invention relates to a kind of equipment for preparing charcoal and carbonizing method, particularly a kind of Tunnel-type carbonization furnace and charing method.
Background technology
Existing mostly only have for charcoal processing kiln singlely fire room, eachly when firing fire the carbon-point blank that a unit can only be placed in room, room is fired by manually being put into by carbon-point blank, after having fired, until carbon-point after firing indoor cooling, again by manually firing indoor taking-up finished product carbon-point from each, whole process wastes time and energy, and working efficiency is not high.And this extensive original equipment for preparing charcoal and carbonizing method are waste the one of the energy to a great extent: the combustible gas cognition produced in carbonization process runs off in vain, and the high calorie produced in carbonization process also cannot be recycled.
Summary of the invention
The object of the invention is to, a kind of Tunnel-type carbonization furnace and charing method are provided.It efficiently can complete charcoal processing task by high texture, and energy-conserving and environment-protective more.
Technical scheme of the present invention: Tunnel-type carbonization furnace, be characterized in: comprise the burning tunnel be connected in series by multiple combustion chambers level, every two burning tunnels be set up in parallel are provided with a breather line, and be equipped with the pipe connecting of conducting to breather line above each combustion chamber of burning on tunnel, the direction from the entrance in burning tunnel to outlet on breather line is communicated with exhaust pipeline, gas pipeline and hot gas duct successively; The burning track slided for multiple kiln car is provided with in described burning tunnel; Described burning tunnel entrances place is provided with first fire door; Tunnel is also provided with the first obstruct door in burning, and first intercepts door and the first fire door is separated by the distance of a combustion chamber; Described burning tunnel exit place is provided with second fire door; Tunnel is also provided with the second obstruct door in burning, and second intercepts door and the second fire door is separated by the distance of a combustion chamber; Described burning tunnel entrances and outlet front are respectively equipped with the input track and output track that are connected burning track.Can also be the form of a group with 2 burning tunnels, construct the array that many groups are arranged side by side, the breather line often organized shares exhaust pipeline, gas pipeline and hot gas duct, to form large-scale charcoal processing unit.
In above-mentioned Tunnel-type carbonization furnace, described first intercepts door and second intercepts the combustion chamber partition door being also provided with multiple obstruct combustion chamber between door, and it is the burner interval of a group that burning tunnel is separated into multiple combustion chamber by combustion chamber partition door.
In aforesaid Tunnel-type carbonization furnace, the joining rails returning kiln car is also provided with between described input track and output track, input track, output track and joining rails are all arranged in recessed tunnel, and input track, output track and joining rails are equipped with the load wagon loading kiln car.
In aforesaid Tunnel-type carbonization furnace, the front end of described input track is provided with bar system processed automatically, and bar system processed comprises automatic charging machine automatically, and automatic charging machine is connected with dryer, the discharge port of dryer is connected with automatic rod-made machine, and the discharge port of automatic rod-made machine is positioned at directly over input track.
In aforesaid Tunnel-type carbonization furnace, the bottom of described each combustion chamber is provided with multiple feeding oxygen hole, and feeding oxygen hole and pipe connecting separate from the left and right sides of combustion chamber, and wherein feeding oxygen hole is for inputting the oxygen for burning, the gas that pipe connecting produces for exporting burning.
In aforesaid Tunnel-type carbonization furnace, bottom described kiln car, be provided with the first pinch roller being arranged in both sides, and inside the first pinch roller, be provided with coaxial mounted first transmission gear; Be provided with the second pinch roller being arranged in both sides bottom described load wagon, and be provided with coaxial mounted second transmission gear inside the second pinch roller, the second transmission gear coordinates on the transmission chain bottom being arranged on; Described load wagon top is also provided with the car upper rail that two components stand on load wagon two ends, car upper rail is vertical with the orbit of load wagon, and the inner side often organizing car upper rail is also provided with on car and transmits catenary system, conveyer chain traffic direction car transmitting catenary system is identical with the direction of car upper rail; The car upper rail of described load wagon and burning track are on same horizontal plane; Described burning tunnel bottom is provided with the conveyer chain driving kiln car, and the drive-motor of conveyer chain is positioned at outside burning tunnel.
Use the charing method of above-mentioned Tunnel-type carbonization furnace: be placed on kiln car by wood chip rod stock, kiln car slides to burning tunnel entrances from input track, and proceed to first combustion chamber that burning track enters burning tunnel, before kiln car enters first combustion chamber, first intercepts door closes, and first is door opened; After kiln car enters first combustion chamber, first intercepts door opens, and the first fire door is closed, and then kiln car is passed through each combustion chamber, and the temperature of each combustion chamber raises from the entrance in burning tunnel gradually to outlet; After kiln car enters last combustion chamber, second intercepts door closes, and second is door opened, and kiln car proceeds to output track and exported by the material completing charing.Outlet and entrance all just use the structure of double door, not only can avoid drawing outside stove fire, and can accomplish high-efficiency insulated.
In aforesaid charing method, the combustion chamber of described burning tunnel from the combustion chamber of ingress to exit, control temperature linearly increases step by step from 100 DEG C to 800 DEG C; According to material and the size of wood chip rod stock, control the translational speed of kiln car, all can effectively be carbonized to make different stocks; Being separated into burning tunnel with multiple combustion chamber by combustion chamber partition door is three burner intervals of a group; First burner interval control temperature, at 100 DEG C to 300 DEG C, for carrying out low-temperature carbonization, will produce waste gas; Second burner interval control temperature at 300 DEG C to 500 DEG C, for generation of inflammable gas; And the 3rd burner interval control temperature is at 600 DEG C to 800 DEG C, the hot gas that this interval produces carries out UTILIZATION OF VESIDUAL HEAT IN after being collected by hot gas duct.It is fixing that this method makes the temperature of each combustion chamber accomplish, without the need to carrying out Intelligent adjustment.Original temperature controls to transform in order to the speed control of kiln car by the present invention, not only controls more simple, and make multiple combustion chamber can collaborative work, the set that its efficiency works respectively much larger than each combustion chamber.The setting that the present invention is such, stock can be made at the waste gas of low-temperature condition by exhaust pipeline collection and treatment, and higher temperatures state can produce inflammable gas, these inflammable gass can be collected by gas pipeline and recycle, and produce hot gas under the condition of high temperature and will be collected by hot gas duct, hot gas duct can connect thermal hardware and carry out thermal utilization.
In aforesaid Tunnel-type carbonization furnace, consider excellent stock to be worth doing and be provided with automatically bar system processed by the front end inputting track and automatically generate and be loaded on kiln car.
In aforesaid Tunnel-type carbonization furnace, described kiln car is all placed on load wagon outside turnover burning tunnel, when load wagon moves to the position corresponding with the track that burns, car on load wagon transmits the first transmission gear bottom catenary system driving kiln car, make kiln car enter burning track or enter load wagon.
Compared with prior art, multiple combustion chamber is carried out serial connection and is formed burning tunnel by the present invention, stock is moved in burning tunnel, makes stock in a disguised form realize the process carbonized that heats up gradually.After different temperature only need be arranged in each combustion chamber by this method of the present invention, regulate the translational speed of stock, without the need to more loaded down with trivial details the temperature regulating each combustion chamber in whole process.And the waste gas produced in carbonization process, combustion gas and hot gas can also can be separated by the present invention, and process respectively or utilize.Therefore the present invention not only can improve the efficiency of charing, and energy-conserving and environment-protective more.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is layout structure schematic diagram of the present invention;
Fig. 3 is the structural representation of load wagon of the present invention and kiln car;
Fig. 4 is the side-view of load wagon of the present invention;
Fig. 5 is the conveyer chain drives structure schematic diagram in burning tunnel of the present invention.
Being labeled as in accompanying drawing: 1-burns tunnel, 2-breather line, 3-pipe connecting, 4-exhaust pipeline, 5-gas pipeline, 6-hot gas duct, 7-first fire door, 8-first intercepts door, and 9-second intercepts door, 10-second fire door, 11-inputs track, and 12-burns track, 13-output track, 14-joining rails, 21-kiln car, 22-first pinch roller, 31-automatic charging machine, 32-dryer, the automatic rod-made machine of 33-, 41-load wagon, 42-second pinch roller, 43-second transmission gear, 44-car upper rail, 45-car transmits catenary system.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but not as the foundation limited the present invention.
Embodiment.Tunnel-type carbonization furnace, as depicted in figs. 1 and 2: comprise the burning tunnel 1 be connected in series by multiple combustion chambers level, every two burning tunnels 1 be set up in parallel are provided with a breather line 2, and be equipped with the pipe connecting 3 of conducting to breather line 2 above each combustion chamber of burning on tunnel 1, the direction from the entrance in burning tunnel 1 to outlet on breather line 2 is communicated with exhaust pipeline 4, gas pipeline 5 and hot gas duct 6 successively; The burning track 12 slided for multiple kiln car 21 is provided with in described burning tunnel 1; Ingress, described burning tunnel 1 is provided with first fire door 7; Burning tunnel 1 is also provided with the first obstruct door 8, first to intercept door 8 and the first fire door 7 and to be separated by the distance of a combustion chamber; Exit, described burning tunnel 1 is provided with second fire door 10; Burning tunnel 1 is also provided with the second obstruct door 9, second to intercept door 9 and the second fire door 10 and to be separated by the distance of a combustion chamber; Entrance and exit front, described burning tunnel 1 is respectively equipped with the input track 11 and output track 13 that connect burning track 12.With the form that 2 burning tunnels are a group, construct two groups of arrays arranged side by side, the breather line of two groups shares exhaust pipeline, gas pipeline and hot gas duct, to form large-scale charcoal processing unit.
Described first intercepts door 8 and second intercepts the combustion chamber partition door being also provided with multiple obstruct combustion chamber between door 9, and it is the burner interval of a group that burning tunnel 1 is separated into multiple combustion chamber by combustion chamber partition door.
The joining rails 14 returning kiln car 21 is also provided with between described input track 11 and output track 13, input track 11, output track 13 and joining rails 14 are all arranged in recessed tunnel, and input track 11, output track 13 and joining rails 14 are equipped with the load wagon 41 loading kiln car 21.
The front end of described input track 11 is provided with bar system processed automatically, automatic bar system processed comprises automatic charging machine 31, automatic charging machine 31 is connected with dryer 32, and the discharge port of dryer 32 is connected with automatic rod-made machine 33, and the discharge port of automatic rod-made machine 33 is positioned at directly over input track 11.
The bottom of described each combustion chamber is provided with multiple feeding oxygen hole, and feeding oxygen hole and pipe connecting 3 separate from the left and right sides of combustion chamber, and wherein feeding oxygen hole is for inputting the oxygen for burning, the gas that pipe connecting 3 produces for exporting burning.
As shown in Figure 3, bottom is provided with the first pinch roller 22 being arranged in both sides to described kiln car 21, and is provided with coaxial mounted first transmission gear inside the first pinch roller 22; As shown in Figure 3 and Figure 4, bottom is provided with the second pinch roller 42 being arranged in both sides to described load wagon 41, and be provided with inside the second pinch roller 42 coaxial mounted second transmission gear 43, second transmission gear 43 coordinate be arranged on bottom transmission chain on; Described load wagon 41 top is also provided with the car upper rail 44 that two components stand on load wagon 41 two ends, car upper rail 44 is vertical with the orbit of load wagon 41, and the inner side often organizing car upper rail 44 is also provided with on car and transmits catenary system 45, conveyer chain traffic direction car transmitting catenary system 45 is identical with the direction of car upper rail 44; The car upper rail 44 of described load wagon 41 and burning track 12 are on same horizontal plane; The conveyer chain driving kiln car 21 is provided with bottom described burning tunnel 1, the drive-motor of conveyer chain is positioned at outside burning tunnel 1, two burning tunnels can share two drive-motor: the conveyer chain in two burning tunnels uses same axle, two drive-motor lay respectively at the both sides in two burning tunnels, as shown in Figure 5.A kiln car 21 all can be placed in the two ends of a load wagon 41, so the present invention can accomplish that two kiln cars enter two burning tunnels simultaneously.
Use the charing method of aforesaid Tunnel-type carbonization furnace, wood chip rod stock is placed on kiln car 21, kiln car 21 slides to burning tunnel 1 entrance from input track 11, and proceed to first combustion chamber that burning track 12 enters burning tunnel 1, before kiln car 21 enters first combustion chamber, first intercepts door 8 closes, and the first fire door 7 is opened; After kiln car 21 enters first combustion chamber, first intercepts door 8 opens, and the first fire door 7 is closed, and then kiln car 21 is passed through each combustion chamber, and the temperature of each combustion chamber raises from the entrance in burning tunnel 1 gradually to outlet; After kiln car 21 enters last combustion chamber, second intercepts door 9 closes, and the second fire door 10 is opened, and kiln car 21 proceeds to output track 13 and exported by the material completing charing.
The combustion chamber of described burning tunnel 1 from the combustion chamber of ingress to exit, control temperature linearly increases step by step from 100 DEG C to 800 DEG C; According to material and the size of wood chip rod stock, control the translational speed of kiln car 21, all can effectively be carbonized to make different stocks; Being separated into burning tunnel 1 with multiple combustion chamber by combustion chamber partition door is three burner intervals of a group; First burner interval control temperature, at 100 DEG C to 300 DEG C, for carrying out low-temperature carbonization, will produce waste gas; Second burner interval control temperature at 300 DEG C to 500 DEG C, for generation of inflammable gas; And the 3rd burner interval control temperature is at 600 DEG C to 800 DEG C, the hot gas that this interval produces carries out UTILIZATION OF VESIDUAL HEAT IN after being collected by hot gas duct 6.
Described wood chip rod stock is provided with bar system processed automatically by the front end inputting track 11 and automatically generates and be loaded on kiln car 21.
Described kiln car 21 is all placed on load wagon 41 outside turnover burning tunnel 1, when load wagon 41 moves to the position corresponding with the track 12 that burns, car on load wagon 41 transmits catenary system 45 and drive the first transmission gear bottom kiln car 21, make kiln car 21 enter burning track 12 or enter load wagon 41.
Claims (10)
1. Tunnel-type carbonization furnace, it is characterized in that: comprise the burning tunnel (1) be connected in series by multiple combustion chambers level, every two burning tunnels (1) be set up in parallel are provided with a breather line (2), and be equipped with the pipe connecting (3) of conducting to breather line (2) above each combustion chamber of burning on tunnel (1), breather line (2) is communicated with exhaust pipeline (4), gas pipeline (5) and hot gas duct (6) from the entrance of burning tunnel (1) successively to the direction of outlet; The burning track (12) slided for multiple kiln car (21) is provided with in described burning tunnel (1); Described burning tunnel (1) ingress is provided with first fire door (7); Burning tunnel (1) is also provided with the first obstruct door (8), and first intercepts door (8) and the first fire door (7) is separated by the distance of a combustion chamber; Described burning tunnel (1) exit is provided with second fire door (10); Burning tunnel (1) is also provided with the second obstruct door (9), and second intercepts door (9) and the second fire door (10) is separated by the distance of a combustion chamber; Described burning tunnel (1) entrance and exit front is respectively equipped with the input track (11) and output track (13) that connect burning track (12).
2. Tunnel-type carbonization furnace according to claim 1, it is characterized in that: described first intercepts the combustion chamber partition door being also provided with multiple obstruct combustion chamber between door (8) and the second obstruct door (9), it is the burner interval of a group that combustion chamber partition door will burn that tunnel (1) is separated into multiple combustion chamber.
3. Tunnel-type carbonization furnace according to claim 1, it is characterized in that: between described input track (11) and output track (13), be also provided with the joining rails (14) returning to kiln car (21), input track (11), output track (13) and joining rails (14) are all arranged in recessed tunnel, and input track (11), output track (13) and joining rails (14) are equipped with the load wagon (41) loading kiln car (21).
4. Tunnel-type carbonization furnace according to claim 1, it is characterized in that: the front end of described input track (11) is provided with bar system processed automatically, automatic bar system processed comprises automatic charging machine (31), automatic charging machine (31) is connected with dryer (32), the discharge port of dryer (32) is connected with automatic rod-made machine (33), and the discharge port of automatic rod-made machine (33) is positioned at directly over input track (11).
5. Tunnel-type carbonization furnace according to claim 1, it is characterized in that: the bottom of described each combustion chamber is provided with multiple feeding oxygen hole, feeding oxygen hole and pipe connecting (3) separate from the left and right sides of combustion chamber, wherein feeding oxygen hole is for inputting the oxygen for burning, the gas that pipe connecting (3) produces for exporting burning.
6. Tunnel-type carbonization furnace according to claim 3, it is characterized in that: described kiln car (21) bottom is provided with the first pinch roller (22) being arranged in both sides, and the first pinch roller (22) inner side is provided with coaxial mounted first transmission gear; Described load wagon (41) bottom is provided with the second pinch roller (42) being arranged in both sides, and the second pinch roller (42) inner side is provided with coaxial mounted second transmission gear (43), the second transmission gear (43) coordinates on the transmission chain bottom being arranged on; Described load wagon (41) top is also provided with the car upper rail (44) that two components stand on load wagon (41) two ends, car upper rail (44) is vertical with the orbit of load wagon (41), and the inner side often organizing car upper rail (44) is also provided with on car and transmits catenary system (45), conveyer chain traffic direction car transmitting catenary system (45) is identical with the direction of car upper rail (44); The car upper rail (44) of described load wagon (41) and burning track (12) are on same horizontal plane; Described burning tunnel (1) bottom is provided with the conveyer chain driving kiln car (21), and the drive-motor of conveyer chain is positioned at burning tunnel (1) outward.
7. use the charing method of the Tunnel-type carbonization furnace described in the arbitrary claim of claim 1 to 6, it is characterized in that: wood chip rod stock is placed on kiln car (21), kiln car (21) slides to burning tunnel (1) entrance from input track (11), and proceed to first combustion chamber that burning track (12) enters burning tunnel (1), before kiln car (21) enters first combustion chamber, first intercepts door (8) closes, and the first fire door (7) is opened; After kiln car (21) enters first combustion chamber, first intercepts door (8) opens, first fire door (7) is closed, then by kiln car (21) by each combustion chamber, the temperature of each combustion chamber raises from the entrance of burning tunnel (1) gradually to exporting; After kiln car (21) enters last combustion chamber, second intercepts door (9) closes, and the second fire door (10) is opened, and kiln car (21) proceeds to output track (13) and exported by the material completing charing.
8. charing method according to claim 7, is characterized in that: the described combustion chamber of burning tunnel (1) from the combustion chamber of ingress to exit, and control temperature linearly increases step by step from 100 DEG C to 800 DEG C; According to material and the size of wood chip rod stock, control the translational speed of kiln car (21), all can effectively be carbonized to make different stocks; To burn that tunnel (1) is separated into multiple combustion chamber by combustion chamber partition door is three burner intervals of a group; First burner interval control temperature, at 100 DEG C to 300 DEG C, for carrying out low-temperature carbonization, will produce waste gas; Second burner interval control temperature at 300 DEG C to 500 DEG C, for generation of inflammable gas; And the 3rd burner interval control temperature is at 600 DEG C to 800 DEG C, the hot gas that this interval produces carries out UTILIZATION OF VESIDUAL HEAT IN after being collected by hot gas duct (6).
9. charing method according to claim 7, is characterized in that: described wood chip rod stock is provided with bar system processed automatically by the front end inputting track (11) and automatically generates and be loaded on kiln car (21).
10. charing method according to claim 7, it is characterized in that: described kiln car (21) is all placed on load wagon (41) outward in turnover burning tunnel (1), when load wagon (41) moves to the position corresponding with the track that burns (12), car on load wagon (41) transmits the first transmission gear that catenary system (45) drives kiln car (21) bottom, make kiln car (21) enter burning track (12) or enter load wagon (41).
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| CN201410468051.7A CN104312595B (en) | 2014-09-15 | 2014-09-15 | Tunnel-type carbonization furnace and charing method |
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| CN201410468051.7A CN104312595B (en) | 2014-09-15 | 2014-09-15 | Tunnel-type carbonization furnace and charing method |
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| CN108728122A (en) * | 2018-06-27 | 2018-11-02 | 廊坊达能新能源技术股份有限公司 | Tunnel oven continuous carbonization furnace |
| CN108758641A (en) * | 2018-06-28 | 2018-11-06 | 李观德 | A kind of circulating garbage comprehensive treatment device |
| CN114381283A (en) * | 2022-01-24 | 2022-04-22 | 李观德 | Multilayer tunnel type carbonization pyrolysis furnace and carbonization method |
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| CN108758641A (en) * | 2018-06-28 | 2018-11-06 | 李观德 | A kind of circulating garbage comprehensive treatment device |
| CN114381283A (en) * | 2022-01-24 | 2022-04-22 | 李观德 | Multilayer tunnel type carbonization pyrolysis furnace and carbonization method |
| CN114381283B (en) * | 2022-01-24 | 2023-11-07 | 李观德 | Multilayer tunnel type carbonization pyrolysis furnace and carbonization method |
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