CN114308988A - Skid-mounted medical waste isothermal pyrolysis treatment system - Google Patents
Skid-mounted medical waste isothermal pyrolysis treatment system Download PDFInfo
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Abstract
The invention discloses a skid-mounted medical waste isothermal pyrolysis treatment system, which is integrally arranged in a container and mainly comprises a negative pressure unit, a raw material conveying unit and an isothermal pyrolysis unit, wherein the negative pressure unit comprises an induced draft fan and the container; the raw material conveying unit comprises a conveying belt, a crusher and a lifting device; the isothermal pyrolysis unit comprises a hopper, a star-shaped feeder, a shaftless spiral auger, a pyrolysis cylinder, a first porous medium burner, a gas storage tank, a second porous medium burner, a pyrolysis gas catalytic device and a star-shaped discharger. The system can realize isothermal pyrolysis of medical wastes, can effectively recycle organic components in the medical wastes, gradually finishes the processes of crushing, sterilizing, drying and pyrolyzing after materials enter the system, and can use pyrolysis gas generated by pyrolysis as fuel of the porous medium burner after catalytic pyrolysis, thereby realizing on-site reduction treatment and resource utilization of the medical wastes.
Description
Technical Field
The invention belongs to the field of organic waste disposal and resource utilization, and mainly relates to a skid-mounted isothermal pyrolysis disposal system for medical waste, which can be used for treating organic solid waste such as medical waste and the like, and can effectively recycle the medical waste and utilize organic components as resources by utilizing an isothermal pyrolysis method.
Background
The production of medical wastes in China increases year by year, and the production of medical wastes in major and middle cities increases by 20.9% in nearly 5 years. The medical waste not only contains harmful and toxic substances, but also contains a plurality of organic matters, the organic components of the medical waste can reach 70-90%, and how to safely and cleanly dispose the medical waste and realize resource utilization is an urgent problem to be solved.
The most important medical waste treatment method in China is a high-temperature incineration treatment method, so that a large amount of dioxin and other secondary pollutants are inevitably generated. Pyrolysis is a reductive thermochemical conversion technology, and secondary pollutants such as dioxin and the like in pyrolysis gas can be greatly reduced. Therefore, the pyrolysis treatment can save the construction and operation cost of tail purification facilities and reduce the emission of secondary pollution, and is an ideal mode for treating medical wastes.
At present, the medical waste treated in China is transported to a designated treatment point for centralized treatment, so that the transportation cost is increased, and the risk of leakage and propagation of bacteria and viruses exists in the storage, transportation, loading and unloading processes of hospitals; some devices adopt an electric heating mode, the operation cost is high, and the pyrolysis gas energy is not fully utilized; the part adopts heating modes such as flue gas and burner heating, but the pyrolysis structure has low mass transfer and heat transfer efficiency, the tar-containing gas is not treated or causes high cost, and the pollution and blockage of pipelines and pipe fittings are caused; isothermal pyrolysis cannot be realized by the traditional pyrolysis mode, and energy loss is easily caused. In summary, the present invention provides an integrated system for timely, efficient and clean harmless disposal and resource utilization of medical waste, aiming at the above problems.
Disclosure of Invention
The invention aims to provide a skid-mounted medical waste isothermal pyrolysis treatment system, which is used for effectively solving the problems of difficulty in transportation, high energy consumption, low thermal efficiency, non-uniform heating, secondary pollution and the like of the traditional medical waste treatment system.
In order to achieve the purpose, the invention adopts the technical scheme that: a skid-mounted medical waste isothermal pyrolysis treatment system comprises a negative pressure unit, a raw material conveying unit and an isothermal pyrolysis unit, wherein the negative pressure unit comprises an induced draft fan and a container; the raw material conveying unit comprises a conveying belt, a crusher and a lifting device; the isothermal pyrolysis unit comprises a hopper, a star-shaped feeder, a shaftless spiral auger, a pyrolysis cylinder, a first porous medium burner, a gas storage tank, a second porous medium burner, a pyrolysis gas catalytic device and a star-shaped discharger, wherein the pulverizer is sequentially connected with a lifting device and the hopper, an outlet of the hopper is connected with the star-shaped feeder, an outlet of the star-shaped feeder is connected with a front end feed inlet of the pyrolysis cylinder, the shaftless spiral auger is arranged in the pyrolysis cylinder, the first porous medium burner is arranged outside the pyrolysis cylinder, a discharge port and a gas outlet are arranged at the tail end of the pyrolysis cylinder, the discharge port is connected with the star-shaped discharger, the gas outlet is connected with a pyrolysis gas discharge pipe, the pyrolysis gas catalytic device is arranged in the discharge pipe, and the second porous medium burner is arranged at the periphery of a pipe section where the pyrolysis gas catalytic device is located.
Furthermore, porous media are installed in fuel cavities of the first porous medium burner and the second porous medium burner, and a radiation cavity is reserved between the porous media and the outer wall of the pyrolysis cylinder.
Further, first porous medium combustor and the whole cylindric that is of second porous medium combustor comprise 2 ~ 12 fan-shaped combustion units, and each fan-shaped combustion unit all is equipped with independent gas import, and inside all is equipped with independent temperature sensor, is equipped with flow controller on the gas passageway that links to each other with the gas import simultaneously, gets into the gas flow in each fan-shaped combustion unit through temperature signal feedback control to control the temperature of every combustion unit, the difference in temperature in the combustion chamber is 1 ~ 5 ℃.
Furthermore, the temperature of the combustion unit is 800-1200 ℃; the porous medium is 10-100 ppi of foam metal or foam ceramic, and the thickness is 15-60 mm.
Further, the catalyst of the pyrolysis gas catalytic device is any one of nickel-based, iron-based, molybdenum-based metals or composite catalysts containing multiple active metal bases, and the carrier is any one of natural ore, silica, molecular sieve, foamed ceramic and foamed metal.
Furthermore, an openable structure is arranged on the side wall of one side of the container, a conveying belt is arranged at the openable position, and materials are conveyed into the container through the conveying belt; and meanwhile, an induced draft fan is installed above the container, the whole container is in a negative pressure state through the operation of the induced draft fan, gas discharged by the induced draft fan is premixed with gas in the gas storage tank, and then enters the first porous medium burner and the second porous medium burner for burning.
Furthermore, the two ends of the shaftless spiral auger are provided with rotating shafts for fixing and driving, the outer surface of an impeller of the shaftless spiral auger is welded with a scraping knife, a reverse helical blade is welded on the rotating shaft above the discharge port, the shaftless spiral auger is eccentrically arranged, and the upper reserved space is larger than the bottom reserved space.
Furthermore, the shape of the scraping knife is arc-shaped, the scraping knife and the axis of the shaftless spiral auger are 15-45 degrees, the pitch of the shaftless spiral auger blade is 0.5-2 times the outer diameter of the spiral auger blade, and the rotating speed of the spiral auger is 1-10 rpm.
Further, the both ends axis of rotation of shaftless spiral auger stretches out outer barrel to seal through controlling two end covers, wherein one end is connected passive end bearing frame, and the other end is connected the drive end bearing frame and is taken the sprocket sleeve pipe of safety cover, drive end bearing frame and passive end bearing frame are installed on the axle support, fix and support the axis of rotation through drive end bearing frame and passive end bearing frame, simultaneously the sprocket sleeve pipe of taking the safety cover passes through the sprocket and links to each other with gear motor, and drives the axis of rotation and rotates.
Furthermore, the raw materials treated by the system can be organic solid wastes, including medical wastes, household wastes and agricultural and forestry wastes.
The invention has the following beneficial effects:
(1) the skid-mounted isothermal pyrolysis treatment system is arranged in a container, can be skid-mounted and moved, can be transported to a hospital and other places for treating medical wastes on site, reduces the transportation cost of the medical wastes, and avoids the risk of leakage of infection sources such as bacteria, viruses and the like caused by transportation of the medical wastes. Pyrolysis gas generated by pyrolysis can be used as fuel gas of the porous medium burner after catalytic cracking, and the utilization rate of energy is improved. The medical waste crushing, sterilizing, drying and pyrolyzing system has the advantages of low treatment risk, low operation cost, high heat efficiency, high reduction degree, high resource recovery rate and the like.
(2) The porous medium combustion technology and the pyrolysis technology are integrated, and the porous medium burner has the advantages of uniform heating, high heat efficiency, small thermal inertia, effective tempering prevention and the like; meanwhile, the flow of combustible gas is regulated, so that the radiant combustion temperature can be effectively controlled, and isothermal heating in the pyrolysis process is realized.
(3) Shaftless spiral flood dragon has strong transporting capacity, stable transportation process and certain flexibility, and can prevent the material from being blocked between the two blades. The material scraping mechanism arranged on the shaftless spiral auger can fully stir materials, strengthen the heat and mass transfer effect and effectively prevent coking.
(4) The system is operated under negative pressure, so that the leakage of harmful gas in the container during feeding and discharging can be effectively prevented; meanwhile, gas in the system is premixed with pyrolysis gas in the gas storage tank and enters the porous medium burner for burning, and therefore heat blocking of toxic and harmful substances in the gas is achieved.
(5) The system of the invention is also suitable for heterogeneous organic solid wastes such as domestic wastes, landfill domestic wastes, agricultural and forestry wastes and the like except medical wastes.
Drawings
Fig. 1 is a structural view of an isothermal pyrolysis treatment system for medical waste according to the present invention.
Fig. 2 is a sectional structural view of a first porous medium burner of the present invention.
FIG. 3 is a schematic view of the first porous medium burner temperature control of the present invention.
FIG. 4 is a view showing the structure of a catalytic cracking section of the pyrolysis gas outlet of the present invention.
FIG. 5 is a structural diagram of the shaftless screw auger and scraper of the present invention.
Labeled as: 1-conveyer belt, 2-pulverizer, 3-lifting device, 4-shaft support, 5-passive end bearing support, 6-end cover, 7-hopper, 8-star type feeder, 9-pyrolysis cylinder, 10-first porous medium burner, 101-burner outer wall, 102-fuel cavity, 103-porous medium, 104-radiation cavity, 11-gas storage tank, 12-second porous medium burner, 13-pyrolysis gas catalytic device, 131-pyrolysis gas catalytic unit, 14-star type discharger, 15-shaftless spiral auger, 151-scraper, 16-driving end bearing support, 17-sprocket sleeve with protective cover, 18-movable support, 19-draught fan and 20-container; a-a feed inlet, a B-a discharge outlet, a C-pyrolysis gas outlet, a D-fuel gas inlet, an E-flue gas outlet and an F-natural gas inlet.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The first embodiment.
As shown in fig. 1, a skid-mounted isothermal pyrolysis treatment system for medical waste comprises a conveyor belt 1, a crusher 2, a lifting device 3, a shaft support 4, a driven end bearing seat 5, an end cover 6, a hopper 7, a star-shaped feeder 8, a pyrolysis cylinder 9, a first porous medium burner 10, a gas storage tank 11, a second porous medium burner 12, a pyrolysis gas catalytic device 13, a star-shaped discharger 14, a shaftless spiral auger 15, a driving end bearing seat 16, a sprocket sleeve 17 with a protective cover, a movable support 18, a draught fan 19, a container 20, a feed inlet a, a discharge outlet B, a pyrolysis gas outlet C, a gas inlet D, a flue gas outlet E and a natural gas inlet F. Wherein:
2 exports of rubbing crusher connect gradually hoisting device 3 and hopper 7, and the exit linkage star type feeder 8 of hopper 7, the exit linkage of star type feeder 8 the front end feed inlet of pyrolysis barrel 9, the internally mounted of pyrolysis barrel 9 has shaftless spiral auger, the first porous medium combustor 10 of externally mounted, and the tail end of pyrolysis barrel 9 is equipped with discharge gate and gas outlet simultaneously, and the star type discharger 14 is connected to the discharge gate, and pyrolysis gas delivery pipe is connected to the gas outlet, be provided with pyrolysis gas catalytic unit 131 in the pyrolysis gas delivery pipe, the peripheral installation second porous medium combustor 12 of this pyrolysis gas catalytic unit 131 pipeline section of locating.
The catalyst pyrolysis unit 131 is provided with a molybdenum-based catalyst, and the carrier is silica.
The two ends of the shaftless spiral auger 15 are provided with rotating shafts for fixing and driving, the middle part of the shaftless spiral auger 15 is not provided with a rotating shaft, the outer surface of an impeller of the shaftless spiral auger 15 is welded with a scraper knife 151, and a reverse spiral blade is welded on the rotating shaft above the discharge port. In addition, shaftless spiral auger 15 is eccentrically arranged, certain space is reserved between the bottom and the upper part of the shaftless spiral auger 15 and the pyrolysis cylinder 9, the upper reserved space is larger than the bottom reserved space, the upper reserved space is used for providing a flowing space for generated pyrolysis gas, and the bottom reserved space is used for preventing the blades from mechanically colliding with the pyrolysis cylinder 9 due to self deflection and thermal expansion of the spiral blades.
The appearance of scraper 151 is circular-arc, and scraper and shaftless spiral auger 15's axis are 15, shaftless spiral auger blade's pitch is between 0.5 times spiral auger blade external diameter, and spiral auger rotational speed is 5 ~ 10 rpm.
The chain wheel sleeve 17 with the protective cover is connected with the speed reducing motor through a chain wheel and drives the rotating shaft to rotate, and the rotating shaft is fixed and supported through the driving end bearing seat 16 and the driven end bearing seat 5; the left end cover 6 and the right end cover 6 seal the pyrolysis cylinder 9; the shaftless spiral auger 15 is welded on the rotating shaft and is driven to rotate by the rotating shaft; the scraper 151 is welded on the outer surface of the impeller of the shaftless spiral auger 15 and rotates along with the shaftless spiral auger 15.
The induced draft fan 19 makes whole container be the negative pressure, forms a gaseous enclosure space, prevents that the harmful gas that produces from spilling over in the medical waste treatment process, and the burning is got into first porous medium combustor 10 and second porous medium combustor 12 after the exhaust air mixes in advance with the pyrolysis gas in the gas holder 11.
Example two.
The use process of the best embodiment of the invention is as follows: the processes of drying, pyrolysis, etc. of the forestry and agricultural residues all take place in the pyrolysis cylinder 9. The rotating shaft obtains power through a right end driving device to drive the shaftless spiral auger to rotate. The crushed agricultural and forestry waste is lifted to a hopper 7 by a lifting device 3 and then falls through a star-shaped feeder 8 into a pyrolysis cylinder 9. The agricultural and forestry wastes are pushed by the shaftless spiral auger to move towards the discharge port B and gradually pass through the preheating zone and the pyrolysis zone, and the heat is continuously absorbed in the process, so that the drying and pyrolysis processes are completed. The pyrolysis reaction is more violent by stirring and stirring the shaftless spiral auger and the scraper. When the scraper and the axis of the shaftless spiral auger 15 move to the tail end at an angle of 45 degrees, the pyrolysis process is completed, the solid product is discharged through the star-shaped discharger 14, the gaseous product is discharged through the pyrolysis gas outlet C, and the tar is removed through catalytic cracking to be used as the fuel of the porous medium burner. The catalyst used in the catalytic cracking process is an iron-based catalyst, and the carrier is a molecular sieve.
The porous media installed in the porous media burner was 50ppi ceramic foam with a thickness of 40 mm. The fuel gas (pyrolysis gas or natural gas) enters the fuel cavity 102 of the porous medium burner through the fuel gas inlet D after being premixed, and the thermal efficiency is high due to the fact that the fuel gas is completely premixed. After ignition, the pyrolysis cylinder 9 is heated by the heat generated by the combustion of the first porous medium burner 10, and the combustion temperature is 1200 ℃ (the pyrolysis temperature can reach 900 ℃). The heat is partly derived from the thermal radiation generated by the combustion of the first porous medium burner 10 and partly derived from the flue gas generated by the combustion thereof. The smoke outlet E is arranged near the inlet end, so that full combustible gas which is not combusted can be prevented from being discharged, secondary pollution is reduced, and baffle plates can be arranged outside the pyrolysis cylinder 9 when necessary, so that heat transfer of smoke is enhanced. First porous medium combustor 10 has the advantage that thermal radiation efficiency is high, the burning is even stable, the intensification is fast with the cooling rate, is more suitable for the heating device as organic solid waste pyrolysis than traditional combustor.
Example three.
The skid-mounted medical waste isothermal pyrolysis treatment system provided by the embodiment has the following main parameters: the outer diameter of the spiral auger is 150mm, the thread pitch is 120mm, and the rotating speed is 1 rpm; the first porous medium burner has a length of 1200mm and a rated power of 30 kW. The porous medium material is 30ppi of foamed metal and has a thickness of 20 mm.
Selecting mixed medical waste as a raw material, crushing the mixed medical waste, then feeding the crushed mixed medical waste into a hopper and a star-shaped feeder through a feeding port A, then feeding the crushed mixed medical waste into a pyrolysis barrel, gradually completing the processes of sterilization, drying and pyrolysis under the pushing of a shaftless spiral auger, finally reaching a discharging port B, and continuously discharging the crushed mixed medical waste after passing through the star-shaped feeder. The materials are pushed to the discharge hole B from the pyrolysis cylinder to the packing auger, and the whole process takes 10 minutes. The temperature of the pyrolysis process is changed by adjusting the power of the first porous medium burner, and the pyrolysis is carried out at 650 ℃, 750 ℃ and 850 ℃ respectively. The first porous medium combustor consists of 4 fan-shaped combustion units, and the gas flow entering the porous medium combustion units can be regulated and controlled through the temperature sensors, so that the temperature of the combustion units is controlled, and isothermal pyrolysis is realized. Pyrolysis gas after catalytic cracking of a nickel-based catalyst (with a carrier of natural ore) is discharged from a pyrolysis gas outlet C and collected, and samples are respectively taken for analysis.
Table I shows the experimental acquisitions in this exampleThe gas product composition and the calorific value of (a). As can be seen from Table I, as the temperature increases, the combustible components in the pyrolysis gas gradually increase, and the heating value also increases as the temperature increases. At 850 ℃, CH4、CO、H2The total amount of the active carbon reaches more than 85 percent, and the active carbon has good utilization prospect.
Table-pyrolysis gas composition and calorific value
| Pyrolysis temperature | 650℃ | 750℃ | 850℃ |
| Pyrolysis gas component | content/Vol% | content/Vol% | content/Vol% |
| H2 | 8.92％ | 17.59％ | 29.83％ |
| CO2 | 23.95％ | 11.23％ | 4.71％ |
| CH4 | 12.97％ | 44.40％ | 46.19％ |
| CO | 44.26％ | 13.87％ | 11.51％ |
| C2H6 | 2.20％ | 2.32％ | 0.68％ |
| C2H4 | 7.69％ | 10.59％ | 7.08％ |
| Calorific value (kJ/kg) | 4108 | 6540 | 6187 |
Example four.
The skid-mounted medical waste isothermal pyrolysis treatment system provided by the embodiment has the following main parameters: the outer diameter of the spiral auger is 120mm, the screw pitch is 80mm, and the rotating speed is 5 rpm; the length of the porous medium burner is 12000mm, and the total power is 300 kW. The porous medium material is 100ppi of foamed metal and has a thickness of 60 mm.
Selecting household garbage as a raw material, continuously feeding the crushed household garbage into a pyrolysis cylinder body from a feeding hole A through a hopper and a star-shaped feeder, gradually completing the processes of sterilization, drying and pyrolysis under the pushing of a spiral auger, finally reaching a discharging hole B, and continuously discharging the household garbage after passing through the star-shaped feeder. The materials are pushed to the discharge hole B from the pyrolysis cylinder to the packing auger, and the whole process takes 30 minutes. Adjusting the power of the first porous medium burner, changing the temperature of the pyrolysis process, and performing pyrolysis at 650 ℃, 750 ℃ and 850 ℃ respectively. The first porous medium burner consists of 12 fan-shaped combustion units, and the temperature of each combustion unit is controlled by regulating and controlling the flow entering the porous medium combustion units through a temperature sensor, so that isothermal pyrolysis of materials is realized. Pyrolysis gas after catalytic cracking of the nickel-iron-based composite catalyst (the carrier is a molecular sieve) is discharged from a pyrolysis gas outlet C and collected, and samples are respectively taken for analysis.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (10)
1. A skid-mounted medical waste isothermal pyrolysis treatment system is characterized by comprising a negative pressure unit, a raw material conveying unit and an isothermal pyrolysis unit, wherein the negative pressure unit comprises an induced draft fan and a container; the raw material conveying unit comprises a conveying belt, a crusher and a lifting device; the isothermal pyrolysis unit comprises a hopper, a star-shaped feeder, a shaftless spiral auger, a pyrolysis cylinder, a first porous medium burner, a gas storage tank, a second porous medium burner, a pyrolysis gas catalytic device and a star-shaped discharger, wherein the pulverizer is sequentially connected with a lifting device and the hopper, an outlet of the hopper is connected with the star-shaped feeder, an outlet of the star-shaped feeder is connected with a front end feed inlet of the pyrolysis cylinder, the shaftless spiral auger is arranged in the pyrolysis cylinder, the first porous medium burner is arranged outside the pyrolysis cylinder, a discharge port and a gas outlet are arranged at the tail end of the pyrolysis cylinder, the discharge port is connected with the star-shaped discharger, the gas outlet is connected with a pyrolysis gas discharge pipe, the pyrolysis gas catalytic device is arranged in the discharge pipe, and the second porous medium burner is arranged at the periphery of a pipe section where the pyrolysis gas catalytic device is located.
2. The isothermal pyrolysis treatment system for the skid-mounted medical waste according to claim 1, wherein porous media are installed in fuel cavities of the first porous media burner and the second porous media burner, and a radiation cavity is reserved between the porous media and the outer wall of the pyrolysis cylinder.
3. The isothermal pyrolysis treatment system for the skid-mounted medical waste according to claim 2, wherein the first porous medium burner and the second porous medium burner are cylindrical as a whole and consist of 2-12 fan-shaped combustion units, each fan-shaped combustion unit is provided with an independent gas inlet, an independent temperature sensor is arranged inside each fan-shaped combustion unit, a flow controller is arranged on a gas channel connected with the gas inlet, gas flow entering each fan-shaped combustion unit is controlled through temperature signal feedback, so that the temperature of each combustion unit is controlled, and the temperature difference in a combustion cavity is 1-5 ℃.
4. The isothermal pyrolysis treatment system for the skid-mounted medical waste according to claim 2 or 3, wherein the temperature of the combustion unit is 800-1200 ℃; the porous medium is 10-100 ppi of foam metal or foam ceramic, and the thickness is 15-60 mm.
5. The isothermal pyrolysis disposal system of the skid-mounted medical waste according to claim 1, wherein the catalyst of the pyrolysis gas catalytic device is any one of nickel-based, iron-based, molybdenum-based metals or composite catalysts containing multiple active metal bases, and the carrier is any one of natural ore, silica, molecular sieve, foamed ceramic and foamed metal.
6. The isothermal pyrolysis disposal system for skid-mounted medical waste according to claim 1, wherein an openable structure is arranged on one side wall of the container, a conveyor belt is installed at the openable structure, and materials are conveyed into the container through the conveyor belt; and meanwhile, an induced draft fan is installed above the container, the whole container is in a negative pressure state through the operation of the induced draft fan, gas discharged by the induced draft fan is premixed with gas in the gas storage tank, and then enters the first porous medium burner and the second porous medium burner for burning.
7. The isothermal pyrolysis treatment system for the skid-mounted medical waste according to claim 1, wherein rotating shafts for fixing and driving are arranged at two ends of the shaftless spiral auger, a scraper is welded on the outer surface of an impeller of the shaftless spiral auger, an opposite spiral blade is welded on the rotating shaft above the discharge port, the shaftless spiral auger is eccentrically arranged, and the upper reserved space is larger than the bottom reserved space.
8. The skid-mounted medical waste isothermal pyrolysis treatment system according to claim 7, wherein the shape of the scraper is arc-shaped, the axis of the scraper and the shaftless spiral auger is 15-45 degrees, the pitch of the shaftless spiral auger blade is 0.5-2 times the outer diameter of the spiral auger blade, and the rotating speed of the spiral auger is 1-10 rpm.
9. The isothermal pyrolysis treatment system for the skid-mounted medical waste according to claim 1, wherein rotating shafts at two ends of the shaftless spiral auger extend out of the outer cylinder body and are sealed by a left end cover and a right end cover, one end of the shaftless spiral auger is connected with a driven end bearing seat, the other end of the shaftless spiral auger is connected with a driving end bearing seat and a chain wheel sleeve with a protective cover, the driving end bearing seat and the driven end bearing seat are mounted on the shaft support, the rotating shafts are fixed and supported through the driving end bearing seat and the driven end bearing seat, and the chain wheel sleeve with the protective cover is connected with a speed reduction motor through a chain wheel and drives the rotating shafts to rotate.
10. The isothermal pyrolysis treatment system for skid-mounted medical waste according to claim 1, wherein raw materials treated by the system can be organic solid waste, including medical waste, household garbage and agricultural and forestry waste.
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