CN216924358U - Medical waste and domestic garbage incinerator - Google Patents
Medical waste and domestic garbage incinerator Download PDFInfo
- Publication number
- CN216924358U CN216924358U CN202120316333.0U CN202120316333U CN216924358U CN 216924358 U CN216924358 U CN 216924358U CN 202120316333 U CN202120316333 U CN 202120316333U CN 216924358 U CN216924358 U CN 216924358U
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- Prior art keywords
- furnace
- furnace pipe
- combustion
- incinerator
- furnace liner
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- 239000002906 medical waste Substances 0.000 title claims abstract description 16
- 239000010813 municipal solid waste Substances 0.000 title abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003546 flue gas Substances 0.000 claims abstract description 27
- 239000002893 slag Substances 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 239000010791 domestic waste Substances 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 239000011819 refractory material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model discloses a medical waste and household garbage incinerator, which comprises a furnace liner, a slag extractor and a combustion-supporting machine, wherein the slag extractor is arranged at the lower end of the furnace liner, the combustion-supporting machine is arranged at the right side of the furnace liner, a refractory material layer is arranged on the surface of the inner wall of the furnace liner, a heat-insulating layer is arranged on the surface of the outer wall of the furnace liner, a furnace top cover is fixedly arranged at the top end of the furnace liner, a drying channel is arranged at the upper end of the right side of the furnace liner, an automatic feeding device is fixedly arranged outside the drying channel, an annular flue is arranged at the upper end of the left side of the furnace liner, a flue gas outlet is arranged at the left side of the annular flue, a flue gas inlet is arranged at the right side of the annular flue, a lower air inlet is penetrated through the lower end of the right side of the furnace liner, and a tangential oxygen supply port is penetrated through the surface of the rear end of the furnace liner; through the flue gas entry, heat preservation and lower air intake etc. that set up, effectively avoided the calorific value of rubbish burning to require not enough and the problem that secondary pollution control is not in place, improved the security of device.
Description
Technical Field
The utility model relates to the technical field of incinerators, in particular to a medical waste and household garbage incinerator.
Background
With the development of urbanization, the amount of medical waste and household garbage generated by residents is increasing day by day, and at present, the medical waste and household garbage treatment method mainly comprises the following steps: the method comprises a composting method, a sanitary landfill method and an incineration method, wherein the incineration method is the most harmless and quantitative reduction method among the three methods, the most rapid and efficient method is generally used for incinerating garbage by using a medical waste and domestic garbage incinerator, and the conventional medical waste and domestic garbage incinerator can basically meet daily use requirements, but has some defects to be improved.
In the in-service use process, the existing medical waste domestic garbage incinerator generally adopts the design of a jar-shaped hearth, a main furnace and a secondary combustion chamber are separately designed, the construction difficulty of combustion chamber refractory materials is high, the equipment cost is higher, the temperature of the secondary combustion chamber is difficult to handle and control, the low-temperature pyrolysis treatment technology and the simple incinerator are low in productivity and efficiency, the requirement on the calorific value of garbage is high, the secondary pollution control is not in place, the secondary pollution control is not matched with the environmental protection idea, the practicability of the device is not strong, and a medical waste and domestic garbage incinerator is provided for the reason.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a medical waste and household garbage incinerator, which is characterized in that medical waste and household garbage are incinerated at high temperature in an oxygen-enriched state by using structures such as an automatic garbage feeding mechanism, a garbage pre-drying channel, garbage high-temperature pyrolysis in an oxygen-enriched state, combustible smoke high-temperature incineration, automatic temperature compensation combustion supporting, tangential spiral oxygen supply, an automatic slag discharging device and the like, so that the reduction and harmless treatment are achieved, the generation conditions of dioxin substances are effectively controlled on equipment mechanisms and process flows, and the practicability of the device is improved.
In order to solve the technical problems, the utility model provides the following technical scheme: a medical waste and household garbage incinerator comprises a furnace pipe, a slag extractor and a combustion-supporting machine, wherein the slag extractor is arranged at the lower end of the furnace pipe, the combustion-supporting machine is installed at the right side of the furnace pipe, a material-resistant layer is arranged on the surface of the inner wall of the furnace pipe, a heat-insulating layer is arranged on the surface of the outer wall of the furnace pipe, a furnace top cover is fixedly installed at the top end of the furnace pipe, a drying channel is arranged at the upper end of the right side of the furnace pipe, an automatic feeding device is fixedly installed at the outer side of the drying channel, an annular flue is arranged at the upper end of the left side of the furnace pipe, a flue gas outlet is arranged at the left side of the annular flue, a flue gas inlet is arranged at the right side of the annular flue, a lower air inlet penetrates through the lower end of the right side of the furnace pipe, a tangential oxygen supply port penetrates through the surface of the rear end of the furnace pipe, a furnace door and an ash gate are arranged at the lower end of the inner wall of the furnace pipe, a combustion chamber is fixedly installed with a combustion chamber grate, the lower end of the combustion chamber grate is provided with an ash chamber, the bottom end of the ash chamber grate penetrates through the ash chamber grate, and the bottom end of the ash chamber grate is welded with a slag discharging machine.
As a preferred technical scheme of the utility model, the automatic feeding device comprises a hopper, a shaftless screw and a movable door, the movable door is arranged on the right side of the drying channel, the shaftless screw is attached to the outer side surface of the movable door, one end of the left side of the shaftless screw is fixedly arranged on the right side surface of the drying channel, and the hopper is fixedly arranged at the upper end of the shaftless screw.
As a preferred technical scheme of the utility model, the flue gas inlets are uniformly distributed on the surfaces of the furnace pipe and the annular flue in the circumferential direction.
As a preferable technical scheme of the utility model, the upper end of the combustion chamber is provided with a tangential oxygen supply port which is arranged in the tangential direction on the inner wall of the hearth.
As a preferable technical scheme of the utility model, the furnace pipe is designed by a cup-shaped structure.
As a preferable technical scheme of the utility model, the combustion-supporting machine supports combustion through fuel oil or fuel gas.
As a preferable technical scheme of the utility model, the slag extractor is provided with a hot ash spraying and cooling device.
Compared with the prior art, the utility model can achieve the following beneficial effects:
1. the problems of insufficient heat value requirement and improper secondary pollution control of garbage combustion are effectively solved by arranging a flue gas inlet, a furnace top cover, an annular flue, a flue gas outlet, a furnace door, a slag chamber grate, a slag chamber, a combustion chamber grate, a combustion chamber, a tangential oxygen supply port, a material-resistant layer, a heat-insulating layer and a lower air inlet, the combustion chamber and the flue gas temperature are increased by starting a combustion-supporting machine by enabling garbage to enter a furnace liner, the spiral residence time of the flue gas in the furnace liner is prolonged by the annular flue, the flue gas is fully combusted, the heat insulation of the furnace liner is realized by the heat-insulating layer, and after the combustion is finished, ash residues are discharged by a slag extractor, so that the purposes of increasing the heat value of the garbage combustion and preventing the ash residues from scattering are achieved, and the safety of the device is improved;
2. through the hopper that sets up, shaftless spiral, dodge gate and stoving passageway, effectively avoided the cold air to pass through the hopper and get into in the stove courage and the problem that contains moisture in the rubbish, drive the dodge gate right side with rubbish through using shaftless spiral, make rubbish promote the dodge gate and open, rubbish gets into the inside back dodge gate closure of stoving passageway, make rubbish dry inside the stoving passageway, thereby reach and prevent that the cold air from passing through in the dodge gate access arrangement and carrying out the purpose of fully drying to rubbish, the practicality of device has been improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Wherein: 1. a hopper; 2. shaftless screw; 3. a movable door; 4. a drying channel; 5. a flue gas inlet; 6. a furnace roof; 7. an annular flue; 8. a flue gas outlet; 9. a furnace pipe; 10. a furnace door; 11. a slag door; 12. a slag discharging machine; 13. a slag chamber grate; 14. a slag chamber; 15. a combustion chamber grate; 16. a combustion chamber; 17. a combustion-supporting machine; 18. a tangential oxygen supply port; 19. a refractory layer; 20. a heat-insulating layer; 21. and a lower air inlet.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
referring to fig. 1, a medical waste and household garbage incinerator comprises a furnace pipe 9, a slag extractor 12 and a combustion-supporting machine 17, wherein the lower end of the furnace pipe 9 is provided with the slag extractor 12, the right side of the furnace pipe 9 is provided with the combustion-supporting machine 17, the inner wall surface of the furnace pipe 9 is provided with a refractory layer 19, the outer wall surface of the furnace pipe 9 is provided with a heat insulation layer 20, the top end of the furnace pipe 9 is fixedly provided with a furnace top cover 6, the upper end of the right side of the furnace pipe 9 is provided with a drying channel 4, the outer side of the drying channel 4 is fixedly provided with an automatic feeding device, the upper end of the left side of the furnace pipe 9 is provided with an annular flue 7, the left side of the annular flue 7 is provided with a flue gas outlet 8, the right side of the annular flue 7 is provided with a flue gas inlet 5, the lower end of the right side of the furnace pipe 9 is provided with a lower air inlet 21, the rear end surface of the furnace pipe 9 is provided with a tangential oxygen supply port 18, the lower end of the left side of the furnace pipe 9 is provided with a furnace door 10 and an ash gate 11, the furnace pipe 9 is provided with a combustion chamber 16 inside, and the lower end of the combustion chamber 16 is fixedly provided with a combustion chamber grate 15, the lower end of the combustion chamber grate 15 is provided with an ash chamber 14, the bottom end of the ash chamber 14 is penetrated with an ash chamber grate 13, and the bottom end of the ash chamber grate 13 is welded with a slag extractor 12;
when the device is needed to be used, medical waste or domestic garbage is injected into the furnace pipe 9 from the hopper 1, smoke generated by the hearth is extracted by the high-pressure draught fan, so that working negative pressure is generated in the annular flue 7 when the device works, high-temperature hot air in the combustion chamber 16 enters the annular flue 7 through the smoke inlet 5 under the action of the negative pressure, the combustion chamber 16 is also in the negative pressure working condition, fresh air enters the furnace pipe 9 through the lower air inlet 21, is filtered by the combustion chamber grate 15 and then enters the combustion chamber 16 for supporting combustion, meanwhile, the fresh air enters the combustion chamber 16 through the tangential oxygen supply port 18, the combustion supporting machine 17 is started, the combustion supporting machine 17 helps to keep the temperature in the annular flue 7 and the furnace pipe 9, after the garbage is combusted, garbage ash falls into the ash chamber 14 through the combustion chamber grate 15, slightly cools and then enters the slag discharging machine 12 through the ash chamber grate 13, the ash is collected and discharged, thereby achieving the purposes of improving the heat value of the garbage combustion and preventing the ash from scattering, and improving the safety of the device.
In other embodiments, the automatic feeding device comprises a hopper 1, a shaftless spiral 2 and a movable door 3, a drying channel 4 is arranged on the inner wall of the right side of the drying channel 4, the movable door 3 is arranged on the right side of the drying channel 4, the shaftless spiral 2 is arranged on the outer side surface of the movable door 3 in a fitting manner, one end of the left side of the shaftless spiral 2 is fixedly arranged on the surface of the right side of the drying channel 4, and the hopper 1 is fixedly arranged at the upper end of the shaftless spiral 2;
when needs carry out the material loading, rubbish backs down dodge gate 3 under shaftless spiral 2's effect and gets into stoving passageway 4 inside, rubbish gets into stoving passageway 4 inside back, dodge gate 3 resets under the effect of gravity, set for suitable reinforced frequency according to different rubbish schizolysis periods, because stoving passageway 4 is straight-through with combustion chamber 16, make the high temperature direct radiation in the combustion chamber 16 to the rubbish that stays in stoving passageway 4, when rubbish gets into stoving passageway 4 once more, newly get into rubbish and promote the rubbish that has dried and fall into combustion chamber 16 inside and burn, thereby reach and prevent in the cold air passes through dodge gate 3 access device and carry out abundant stoving purpose to rubbish, the practicality of device has been improved.
In other embodiments, the flue gas inlets 5 are uniformly distributed on the surfaces of the furnace pipe 9 and the annular flue 7;
through this design, inside flue gas accessible flue gas entry 5 that makes production in the stove courage 9 got into ring flue 7, under the effect of draught fan, 7 negative pressures of ring flue derive flue gas in the stove courage 9, make ring flue 7 can regard as the space use that combustible gas fully detained the high temperature burning behind the msw incineration, and the residence time of high temperature flue gas in ring flue 7 inside is greater than 2S to reach the purpose of effective control dioxin class material' S generation condition on slave unit mechanism and the process flow.
In other embodiments, the upper end of the combustion chamber 16 is provided with a tangential oxygen supply port 18, and the tangential oxygen supply port 18 is arranged in the tangential direction on the inner wall of the furnace chamber;
through this design for the oxygen-containing fresh air that gets into stove courage 9 is the burning ardor working gas flow and the flue gas intensive mixing in helix orbit and the stove courage 9 in stove courage 9, has increased the working gas flow and has spiraled the detention time in stove courage 9, promotes the high temperature flue gas and carries out aerobic intensive combustion, and 18 outer ends of tangential oxygen suppliment mouth are furnished with the governing valve of adjustable opening size, thereby reach and carry out the purpose that suitably adjusts according to the interior temperature of stove.
In other embodiments, the furnace 9 uses a "cup" design;
through this design, improved the intensity and the handling bearing capacity of device main part mechanism, and resistant material lays the manufacturability more succinct, and equipment manufacturing cost is lower, and the combustion chamber grate 15 top is the pyrolysis layer, and the below is for burning out the cinder floor and falls into the district, and the lime-ash after burning out falls into slag extractor 12 inside through ash chamber grate 13 to reach the purpose that improves the stability of device.
In other embodiments, the combustion-supporting machine 17 supports combustion by fuel oil or gas;
through the design, when the furnace temperature in the ignition stage or the charging moment in the furnace pipe 9 is lower than 850 ℃, the combustion-supporting machine 17 can be automatically opened through the linkage of the temperature controller, the temperature of the combustion chamber and the flue gas is increased, and when the temperature of the combustion chamber and the flue gas reaches 850 ℃, the combustion-supporting machine 17 is automatically closed, so that the aim of shortening the work preparation time of the device is fulfilled.
In other embodiments, the slag extractor 12 is equipped with a hot ash spray cooling device;
through this design, avoided the lime-ash not to cool down completely and lead to 12 inside high temperatures of mucking machine, caused the problem of influence to the inside part of mucking machine 12 to reach the purpose that improves the security of device.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a medical waste, domestic waste incinerator, includes stove courage (9), mucking machine (12) and combustion-supporting machine (17), stove courage (9) lower extreme is provided with mucking machine (12), combustion-supporting machine (17), its characterized in that are installed on stove courage (9) right side: the furnace is characterized in that a material-resistant layer (19) is arranged on the surface of the inner wall of the furnace pipe (9), a heat-insulating layer (20) is arranged on the surface of the outer wall of the furnace pipe (9), a furnace top cover (6) is fixedly arranged at the top end of the furnace pipe (9), a drying channel (4) is arranged at the upper end of the right side of the furnace pipe (9), an automatic feeding device is fixedly arranged at the outer side of the drying channel (4), an annular flue (7) is arranged at the upper end of the left side of the furnace pipe (9), a flue gas outlet (8) is formed in the left side of the annular flue (7), a flue gas inlet (5) is formed in the right side of the annular flue (7), a lower air inlet (21) penetrates through the lower end of the right side of the furnace pipe (9), a tangential oxygen supply port (18) penetrates through the surface of the rear end of the furnace pipe (9), a furnace door (10) and an ash door (11) are formed at the lower end of the left side of the furnace pipe (9), a combustion chamber (16) is arranged inside the furnace pipe (9), and a combustion chamber grate (15) is fixedly installed at the lower end of the inner wall of the combustion chamber (16), an ash chamber (14) is arranged at the lower end of the combustion chamber grate (15), an ash chamber grate (13) penetrates through the bottom end of the ash chamber grate (14), and a slag discharging machine (12) is welded at the bottom end of the ash chamber grate (13).
2. The incinerator according to claim 1, wherein said incinerator further comprises: automatic feeding device includes hopper (1), shaftless spiral (2) and dodge gate (3), stoving passageway (4) right side is provided with dodge gate (3), dodge gate (3) outside surface laminating is provided with shaftless spiral (2), and shaftless spiral (2) left side one end fixed mounting on stoving passageway (4) right side surface, shaftless spiral (2) upper end fixed mounting has hopper (1).
3. The incinerator according to claim 1, wherein said incinerator further comprises: the flue gas inlets (5) are uniformly distributed on the surfaces of the furnace pipe (9) and the annular flue (7) in the circumferential direction.
4. The incinerator according to claim 1, wherein said incinerator further comprises: the upper end of the combustion chamber (16) is provided with a tangential oxygen supply port (18), and the tangential oxygen supply port (18) is arranged on the inner wall of the hearth in the tangential direction.
5. The incinerator according to claim 1, wherein said incinerator further comprises: the furnace pipe (9) is designed by a cup-shaped structure.
6. The incinerator according to claim 1, wherein said incinerator further comprises: the combustion-supporting machine (17) supports combustion through fuel oil or fuel gas.
7. The incinerator according to claim 1, wherein said incinerator further comprises: the slag extractor (12) is internally provided with a hot ash spraying and cooling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120316333.0U CN216924358U (en) | 2021-02-04 | 2021-02-04 | Medical waste and domestic garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120316333.0U CN216924358U (en) | 2021-02-04 | 2021-02-04 | Medical waste and domestic garbage incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216924358U true CN216924358U (en) | 2022-07-08 |
Family
ID=82223848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120316333.0U Expired - Fee Related CN216924358U (en) | 2021-02-04 | 2021-02-04 | Medical waste and domestic garbage incinerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216924358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221733A (en) * | 2023-03-06 | 2023-06-06 | 青岛汇君环境能源工程有限公司 | Small solid waste incinerator |
-
2021
- 2021-02-04 CN CN202120316333.0U patent/CN216924358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221733A (en) * | 2023-03-06 | 2023-06-06 | 青岛汇君环境能源工程有限公司 | Small solid waste incinerator |
| CN116221733B (en) * | 2023-03-06 | 2024-01-23 | 青岛汇君环境能源工程有限公司 | Small solid waste incinerator |
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Granted publication date: 20220708 |