CN211290074U - Kiln tail accumulated slag cleaning device for incineration treatment of hazardous waste rotary kiln - Google Patents
Kiln tail accumulated slag cleaning device for incineration treatment of hazardous waste rotary kiln Download PDFInfo
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- CN211290074U CN211290074U CN201922280439.5U CN201922280439U CN211290074U CN 211290074 U CN211290074 U CN 211290074U CN 201922280439 U CN201922280439 U CN 201922280439U CN 211290074 U CN211290074 U CN 211290074U
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- 238000004140 cleaning Methods 0.000 title claims abstract description 111
- 239000002893 slag Substances 0.000 title claims abstract description 38
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 33
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 3
- 238000011086 high cleaning Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 15
- 238000002485 combustion reaction Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000010425 asbestos Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000000197 pyrolysis Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
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- 238000010791 quenching Methods 0.000 description 2
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- 238000004056 waste incineration Methods 0.000 description 2
- 230000007059 acute toxicity Effects 0.000 description 1
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Abstract
The utility model discloses a kiln tail accumulated slag cleaning device for the incineration treatment of a rotary kiln for hazardous wastes, which comprises a cleaning block, wherein a cleaning rod is movably arranged at one end of the cleaning block and is used for cleaning accumulated slag at the kiln tail of the rotary kiln; the cleaning block is provided with a sliding chute, a sliding block is arranged in the sliding chute, and the sliding block is driven to move in the sliding chute by a first power device; the sliding block is connected with the cleaning rod through a connecting rod, and when the sliding block moves in the sliding chute, the connecting rod drives the cleaning rod to swing; the cleaning block is driven by a second power device to move up and down on the vertical track; the vertical track is driven by a third power device to horizontally move on the horizontal track; the utility model has simple structure, convenient cleaning and high cleaning efficiency; during cleaning, cold air outside the furnace can not enter to destroy the burning atmosphere, and meanwhile, the burning atmosphere can not leak out, so that the dioxin and other flue gas indexes are prevented from exceeding the standard; moreover, the labor amount is reduced without manual participation, and the phenomenon that the service life of the equipment is shortened due to the fact that the furnace wall is easily damaged in the cleaning process is avoided.
Description
Technical Field
The utility model relates to a kiln tail long-pending sediment cleaning device of hazardous waste rotary kiln incineration disposal, when the serious coking phenomenon of lime-ash appears in the rotary kiln tail or before the coking for clear away the long-pending sediment of kiln tail.
Background
With the rapid development of urban socioeconomic and industrial production, the yield of industrial hazardous wastes is increasing day by day. The "three wastes" (waste water, waste gas and solid waste generated by industrial pollution sources) are fatal to environmental pollution, and the hazardous waste is the most difficult pollutant in the "three wastes". The dangerous waste refers to the waste with dangerous characteristics listed in the national dangerous waste list or judged according to the dangerous waste identification standard and identification method specified by the country, and the dangerous waste listed in the national dangerous waste list of 2016) in China is systematically classified into 46 major categories 479, including industrial type dangerous waste, medical type dangerous waste and social type dangerous waste. Since hazardous wastes have various corrosive, acute toxicity, in-out toxicity, reactivity, infectivity and radioactivity, which constitute serious hazards to the ecological environment and human health, and occupy a wide range in space and time in their production, transfer, disposal or discharge activities, the hazards have long-term and latent properties, and environmental pollution caused by hazardous wastes has become a significant environmental problem threatening the health development of human society.
The treatment of hazardous waste is in accordance with the principle of 'reduction, harmlessness and recycling', the existing hazardous waste treatment modes mainly comprise incineration, pyrolysis, solidification treatment, physicochemical treatment, safe landfill and the like, wherein the incineration method for treating the organic hazardous waste has the characteristics of thorough treatment, reduction, harmlessness and the like, is one of the main technologies for treating the hazardous waste internationally at present, and is also a technology recommended to be preferentially used by national and international organizations such as the United states, WHO and the like. The incineration method is characterized in that a certain amount of excess air and treated organic waste are subjected to oxidation combustion reaction in an incinerator, harmful and toxic substances in the waste are oxidized and pyrolyzed at high temperature to be destroyed so as to achieve the purposes of harmlessness and reduction, and simultaneously, waste heat can be recovered, and even power can be generated. The literature shows that more than 90 percent of hazardous waste treatment centers in China adopt hazardous waste incineration treatment systems. In recent years, incineration technology has become mature, and incinerators of different furnace types, such as rotary kilns, liquid injection furnaces, fluidized beds, multi-bed incinerators, fixed bed incinerators, and the like, have been developed. The hazardous waste incineration disposal system generally comprises a pretreatment system, a feeding system, an incinerator system, a heat energy utilization system, a flue gas purification system, a residue treatment system, an automatic control and online monitoring system and other auxiliary systems.
In order to avoid secondary pollution of feeding and discharging and excessive dioxin and other flue gas indexes caused by frequent starting and stopping, the incineration system can preferably continuously operate. The rotary kiln incineration treatment furnace can treat any solid, liquid and gaseous combustible hazardous waste except radioactive waste and explosive waste due to mature technology, stable operation and wide applicability, is the most extensive and mainstream technology for treating the hazardous waste at present, is also a hazardous waste disposal furnace type recommended by the national ecological environment department, and has the market share of about 85 percent. The rotary kiln and the secondary combustion chamber are common combined incineration processes in the treatment of the current hazardous waste incinerator. Various types of pretreated and compatible hazardous wastes enter the rotary kiln through a feeding system, and gradually move from the kiln head to the kiln tail under the pushing action of self gravity and continuous rotation of the rotary kiln, the wastes are continuously turned in the kiln and fully contacted with combustion-supporting air to finish the drying (moisture evaporation), gasification and combustion processes, and solid parts and partial pyrolysis gases are completely burned in the rotary kiln; the incompletely combusted pyrolysis gas enters a secondary combustion chamber along with the flue gas, the temperature is kept to be more than 1100 ℃ under the action of secondary air and afterburning fuel, and the retention time is more than 2 seconds, so that the unburned harmful substances in the flue gas are fully combusted in the secondary combustion chamber. The rotary kiln and the secondary combustion chamber share one water quenching type scraper slag extractor, and waste slag is continuously taken out after being cooled by water quenching. The whole rotary kiln incineration system always operates in a negative pressure state. The rotary kiln usually adopts a concurrent flow type (the material and the smoke flow in the same direction) and non-slag type rotary kiln, i.e. the ash at the kiln tail is in a coke state rather than a molten flow state. The design has the advantages that ash can be easily discharged, refractory materials are protected, the service life of the rotary kiln is prolonged, and the operation cost is saved.
The hazardous waste has complex components and contains substances with low melting points such as salt, glass and the like. The rotary kiln combustor is arranged at the position of the kiln head, and in the high-temperature incineration process of the rotary kiln, due to the fact that the temperature of the flame center in the hearth is high (generally reaching 1000 ℃), most of ash in the fuel is in a molten state. When the ash slag approaches the kiln tail area, because the temperature is greatly reduced (especially, the temperature of the ash slag near the inner wall of the kiln tail is lower), if ash particles carried in the flue gas are still in a molten or viscous state when contacting the wall surface, the ash slag gradually adheres to the inner wall and is agglomerated into large slag, and an ash outlet of the kiln tail is blocked.
At present, operators need to observe the coking phenomenon at the tail of the kiln through an observation mirror regularly. Once the phenomenon of serious coking of the ash slag at the kiln tail is observed, a cleaning window arranged on the kiln wall needs to be opened, and the accumulated slag at the kiln tail is removed through a tamping bar manual machine. The problems existing in the manual cleaning of the accumulated slag at the tail of the kiln are mainly as follows: on one hand, the burning atmosphere can be damaged due to the fact that cold air outside the furnace is sucked from the cleaning window, on the other hand, the furnace wall is extremely easy to damage in the cleaning process, the service life of equipment is shortened, meanwhile, the labor amount of operators is large, and the working environment is extremely bad due to the fact that the high-temperature burning atmosphere is emitted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a kiln tail sediment cleaning device that hazardous waste rotary kiln incineration disposal that simple structure, the clearance of being convenient for need not artifical the participation is provided.
In order to solve the technical problem, the kiln tail accumulated slag cleaning device for the incineration treatment of the rotary kiln for the hazardous wastes comprises a cleaning block, wherein a cleaning rod is movably arranged at one end of the cleaning block and is used for cleaning accumulated slag at the kiln tail of the rotary kiln; the cleaning block is provided with a sliding groove, a sliding block is arranged in the sliding groove, and the sliding block is driven by a first power device to move in the sliding groove; the cleaning rod is driven to swing through the connecting rod when the sliding block moves in the sliding chute, the cleaning rod is located at a position for cleaning accumulated slag at the tail of the rotary kiln during cleaning, and the cleaning rod is located at a folding position when the cleaning rod is not needed; the cleaning block is driven by a second power device to move up and down on the vertical track; the vertical rail is driven by a third power device to horizontally move on the horizontal rail, and specifically, the vertical rail is installed on the horizontal rail through an installation base.
When the cleaning is needed, the second power device drives (such as upwards drives) the cleaning block to reach the kiln mouth of the rotary kiln. The first power device drives the sliding block to move in the sliding groove, and when the sliding block moves in the sliding groove, the connecting rod drives the cleaning rod to swing to a cleaning angle (such as being parallel or not parallel to the axial direction of the rotary kiln). At the moment, the second power device can drive (such as upwards drive) the cleaning block, so that the distance between the cleaning rod and the inner wall of the rotary kiln is adjusted, and the cleaning rod is in contact with or not in contact with the inner wall of the rotary kiln. The third power device drives the vertical rail to move horizontally on the horizontal rail, so that the cleaning rod extends into the rotary kiln, and when the rotary kiln rotates, the cleaning rod scrapes off slag (accumulated slag) on the inner wall of the rotary kiln, thereby realizing cleaning.
When the cleaning is finished or not needed, the third power device drives the vertical rail to horizontally move on the horizontal rail, so that the cleaning rod returns to the outside of the rotary kiln. The first power device drives the sliding block to move in the sliding groove, and when the sliding block moves in the sliding groove, the connecting rod drives the cleaning rod to swing, so that the cleaning rod is located at a folding position, namely, on the cleaning block. At the moment, the second power device drives (such as downwards drives) the cleaning block, so that the cleaning block is far away from the kiln opening of the rotary kiln, and high-temperature damage is avoided or reduced.
Specifically, the first power device comprises a first motor and a first ball screw, a nut of the first ball screw is connected with the sliding block, and the first motor drives a screw of the first ball screw to rotate. Or the first power device comprises a first motor, a first gear and a first rack, the first gear is arranged on the first motor, and the first motor drives the first gear to rotate so as to drive the first rack to move; the first rack is connected with the sliding block and drives the sliding block to move.
Specifically, the second power device comprises a second motor and a second ball screw, a nut of the second ball screw is connected with the cleaning block, and the second motor drives a screw of the second ball screw to rotate. Or the second power device comprises a second motor, a second gear and a second rack, the second gear is arranged on the second motor, and the second motor drives the second gear to rotate to drive the second rack to move; the second rack is connected with the cleaning block, and the second rack drives the cleaning block to move.
And similarly, the third power device comprises a third motor and a third ball screw, a nut of the third ball screw is connected with the vertical track, and the third motor drives a screw of the third ball screw to rotate. Or the third power device comprises a third motor, a third gear and a third rack, the third gear is arranged on the third motor, and the third motor drives the third gear to rotate to drive the third rack to move; the third rack is connected with the vertical track and drives the vertical track to move.
In order to avoid damage of falling high-temperature ash residues to the motors, the upper parts of the first motor, the second motor and the third motor are respectively provided with a heat-insulating fireproof cover. Meanwhile, the first motor, the second motor and the third motor are fixedly installed through the heat-resistant asbestos gasket, and the influence of heat conduction at the installation position on the work of the motors is reduced.
When the ash slag is seriously coked (or reaches a set time interval), in order to effectively clean the ash slag, the contact part of the cleaning rod and the kiln tail of the rotary kiln is in a sharp-angled shape.
The utility model discloses simple structure, the clearance of being convenient for clears away efficiently. During cleaning, cold air outside the furnace can not enter to destroy the burning atmosphere, and meanwhile, the burning atmosphere can not leak, so that the dioxin and other flue gas indexes are prevented from exceeding the standard. In addition, during cleaning, manual work is not needed, the labor amount is reduced, and the phenomenon that the service life of equipment is shortened due to the fact that the furnace wall is easily damaged in the cleaning process is avoided.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the present invention in a rotary kiln and a second combustion chamber system.
Fig. 2 is a schematic view of the working state of the present invention.
Fig. 3 is a schematic view of the non-operating state of the present invention.
Detailed Description
As shown in figures 1-3, the cleaning device for the slag accumulated at the tail of the kiln for the rotary kiln incineration treatment of the hazardous wastes can be arranged above a water tank through a bracket, and the main body of the cleaning device is positioned in a secondary combustion chamber 2 below a rotary kiln 1. Cleaning device includes clearance piece 4, 6 movable mounting in pivot of 4 one end of clearance piece has clearance pole 5, and along pivot 6, clearance pole 5 can be followed the 4 swings of clearance piece, and clearance pole 5 is used for clearing up the long-pending sediment of rotary kiln 1 kiln tail. Specifically, the contact part of the cleaning rod 5 and the kiln tail of the rotary kiln 1 is in a sharp-angled shape, and when the ash slag is seriously coked (or reaches a set time interval), the ash slag is effectively cleaned like a turning tool.
The cleaning block 4 is provided with a sliding groove 10, a sliding block 9 is arranged in the sliding groove 10, and the sliding block 9 is driven by a first power device (arranged on the cleaning block 4) to move in the sliding groove 10. Specifically, the first power device comprises a first motor 11 and a first ball screw (not shown), the first motor 11 is installed on the cleaning block 4 through a heat-resistant asbestos gasket, and a heat-insulating fireproof cover is installed on the upper portion of the first motor 11. The nut of the first ball screw is connected with the sliding block 9, and the first motor 11 drives the screw of the first ball screw to rotate, so as to drive the nut to move, and further the sliding block 9 moves. Or the first power device comprises a first motor 11, a first gear and a first rack, the first gear is installed on the first motor 11, the first motor 11 drives the first gear to rotate to drive the first rack to move, the first rack is connected with the sliding block, and the first rack drives the sliding block 9 to move.
The slider 9 is connected with the cleaning rod 5 through the connecting rod 7, and when the slider 9 moves in the sliding groove 10, the cleaning rod 5 is driven to swing along the rotating shaft 6 through the connecting rod 7.
The cleaning block 4 is driven by a second power device to move up and down on the vertical track 8. Specifically, the second power device comprises a second motor 15 and a second ball screw, the second motor 15 is mounted on the vertical rail 8 (specifically mounted on a mounting base 14 described below) through a heat-resistant asbestos gasket, and a heat-insulating fireproof cover is mounted on the upper portion of the first motor 15. The nut of the second ball screw is connected with the cleaning block 4, and the second motor 15 drives the screw of the second ball screw to rotate. The second ball screw and the vertical rail 8 form a common ball screw linear module in the prior art. Or the second power device comprises a second motor 15, a second gear and a second rack, the second gear is installed on the second motor 15, the second motor 15 drives the second gear to rotate to drive the second rack to move, the second rack is connected with the cleaning block, and the second rack drives the cleaning block 4 to move.
The vertical rail 8 is installed on the horizontal rail 12 through the installation base 14, and the vertical rail 8 is driven by a third power device to move horizontally on the horizontal rail 12. Specifically, the third power device comprises a third motor 13 and a third ball screw, the third motor 13 is mounted on the horizontal rail 12 (located at one end of the horizontal rail 12) through a heat-resistant asbestos gasket, and a heat-insulating fireproof cover is mounted at the upper part of the third motor 13. The nut of the third ball screw is connected with the vertical track 8 through the mounting base 14, and the third motor 13 drives the screw of the third ball screw to rotate so as to drive the vertical track 8 to move horizontally on the horizontal track 12. The third ball screw, the horizontal rail 12, constitutes a ball screw linear module common in the prior art. Or the third power device comprises a third motor 13, a third gear and a third rack, the third gear is mounted on the third motor 13, the third motor 13 drives the third gear to rotate to drive the third rack to move, the third rack is connected with the vertical track 8, and the third rack drives the vertical track 8 to move.
When the rotary kiln works, the second power device drives the cleaning block 4 upwards to reach the kiln opening of the rotary kiln 1. The first power device drives the sliding block 9 to move in the sliding groove 10, and when the sliding block 9 moves in the sliding groove 10, the connecting rod 7 drives the cleaning rod 5 to swing to a cleaning angle (which is parallel to the axial direction of the rotary kiln 1). The third power device drives the vertical rail 8 to move horizontally on the horizontal rail 12, so that the cleaning rod 5 extends into the rotary kiln 1. At this time, the second power device drives the cleaning block 4 to realize the adjustment of the distance between the cleaning rod 5 and the inner wall of the rotary kiln 1, so that the cleaning rod 5 is in contact with or not in contact with the inner wall of the rotary kiln 1 (specifically, the distance is determined according to the thickness of slag). When the rotary kiln 1 rotates, the cleaning rod 5 scrapes off slag (accumulated slag) on the inner wall of the rotary kiln 1, so that cleaning is realized.
When the cleaning is finished or not needed, the third power device drives the vertical rail 8 to horizontally move on the horizontal rail 12, so that the cleaning rod 5 returns to the outside of the rotary kiln 1. The first power device drives the sliding block 9 to move in the sliding groove 10, and when the sliding block 9 moves in the sliding groove 10, the connecting rod 7 drives the cleaning rod 5 to swing, so that the cleaning rod 5 is located at a folding position, namely, located on the cleaning block 4. At this time, the second power device drives (e.g., drives downward) the cleaning block 4, so that the cleaning block 4 is far away from the kiln mouth of the rotary kiln 1, and high-temperature damage is avoided or reduced.
The above-mentioned embodiment does not limit the utility model in any way, and all the technical solutions that adopt the mode of equivalent replacement or equivalent transform to obtain all fall within the protection scope of the utility model.
Claims (9)
1. The kiln tail accumulated slag cleaning device for the rotary kiln incineration treatment of the hazardous wastes is characterized by comprising a cleaning block, wherein a cleaning rod is movably arranged at one end of the cleaning block and is used for cleaning accumulated slag at the kiln tail of the rotary kiln; the cleaning block is provided with a sliding groove, a sliding block is arranged in the sliding groove, and the sliding block is driven by a first power device to move in the sliding groove; the cleaning rod is driven to swing through the connecting rod when the sliding block moves in the sliding chute, the cleaning rod is located at a position for cleaning accumulated slag at the tail of the rotary kiln during cleaning, and the cleaning rod is located at a folding position when the cleaning rod is not needed; the cleaning block is driven by a second power device to move up and down on the vertical track; the vertical track is driven by a third power device to move horizontally on the horizontal track.
2. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the first power device comprises a first motor and a first ball screw, a nut of the first ball screw is connected with the sliding block, and the first motor drives a screw of the first ball screw to rotate.
3. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the first power device comprises a first motor, a first gear and a first rack, the first gear is mounted on the first motor, and the first motor drives the first gear to rotate to drive the first rack to move; the first rack is connected with the sliding block and drives the sliding block to move.
4. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the second power device comprises a second motor and a second ball screw, a nut of the second ball screw is connected with the cleaning block, and the second motor drives a screw of the second ball screw to rotate.
5. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the second power device comprises a second motor, a second gear and a second rack, the second gear is mounted on the second motor, and the second motor drives the second gear to rotate to drive the second rack to move; the second rack is connected with the cleaning block, and the second rack drives the cleaning block to move.
6. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the third power device comprises a third motor and a third ball screw, a nut of the third ball screw is connected with the vertical track, and the third motor drives a screw of the third ball screw to rotate.
7. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the third power device comprises a third motor, a third gear and a third rack, the third gear is arranged on the third motor, and the third motor drives the third gear to rotate so as to drive the third rack to move; the third rack is connected with the vertical track and drives the vertical track to move.
8. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the contact position of the cleaning rod and the kiln tail of the rotary kiln is in a sharp-angled shape.
9. The device for cleaning the slag accumulated at the tail of the rotary kiln for burning treatment of hazardous wastes of claim 1, which is characterized in that: the vertical rail is installed on the horizontal rail through the installation base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922280439.5U CN211290074U (en) | 2019-12-18 | 2019-12-18 | Kiln tail accumulated slag cleaning device for incineration treatment of hazardous waste rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922280439.5U CN211290074U (en) | 2019-12-18 | 2019-12-18 | Kiln tail accumulated slag cleaning device for incineration treatment of hazardous waste rotary kiln |
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| Publication Number | Publication Date |
|---|---|
| CN211290074U true CN211290074U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922280439.5U Active CN211290074U (en) | 2019-12-18 | 2019-12-18 | Kiln tail accumulated slag cleaning device for incineration treatment of hazardous waste rotary kiln |
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| CN (1) | CN211290074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847608A (en) * | 2021-11-02 | 2021-12-28 | 上海域德环保工程有限公司 | Rotary kiln type incineration device with garbage sufficient combustion and waste heat collection functions |
-
2019
- 2019-12-18 CN CN201922280439.5U patent/CN211290074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847608A (en) * | 2021-11-02 | 2021-12-28 | 上海域德环保工程有限公司 | Rotary kiln type incineration device with garbage sufficient combustion and waste heat collection functions |
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