Miniaturized movable skid-mounted medium-temperature pyrolysis incineration complete device for medical waste

Abstract

The invention discloses a medical waste miniaturized movable skid-mounted medium-temperature pyrolysis incineration complete device which comprises a bearing platform system, an automatic control system, a feeding system, a heat treatment system, a flue gas purification system and a resource recovery system, wherein the automatic control system, the feeding system, the heat treatment system, the flue gas purification system and the resource recovery system are all arranged on the bearing platform system. The feeding system is connected with the heat treatment system and used for conveying medical waste to the heat treatment system. The heat treatment system is used for carrying out heat treatment on the medical waste, and the flue gas output end of the heat treatment system is connected with the flue gas purification system; the flue gas purification system is used for purifying flue gas of the heat treatment system, and the resource recovery system is used for recovering recoverable materials generated by the heat treatment system; the automatic control system is respectively connected with the feeding system, the heat treatment system, the flue gas purification system and the resource recovery system. The medical waste treatment device can efficiently treat medical waste in an environment-friendly mode.

Description

Technical Field

[0001] The present invention relates to the technical field of medical waste treatment, and particularly to a small-scale mobile skid-mounted medium-temperature pyrolysis incineration complete set of devices for medical waste. Background Art

[0002] Medical waste refers to the waste generated by medical and health institutions in medical treatment, prevention, health care and other related activities, which has direct or indirect infectivity, toxicity and other hazards. There may be many pathogens and toxic chemical substances in medical waste, including radioactive and injurious substances. If not properly treated, it will pollute water bodies, the atmosphere and soil. Compared with general domestic waste, medical waste carries a large number and variety of bacteria, and has characteristics such as spatial infection, cross-infection, acute infection and latent infection, with greater harmfulness.

[0003] Currently, the commonly used treatment and disposal technologies for medical waste mainly include rotary kiln incineration, pyrolysis incineration, high-temperature steam disinfection, microwave disinfection and chemical disinfection (dry method), etc. Among them, rotary kiln incineration and pyrolysis incineration are both incineration methods, and high-temperature steam disinfection, microwave disinfection and chemical disinfection (dry method) are non-incineration methods. Currently, the small-scale microwave disinfection and high-temperature steam technologies are relatively mature, while there are still many technical problems in small-scale incineration disposal. However, compared with non-incineration technologies, the pyrolysis incineration technology is more in line with the needs of small-scale in-situ disposal due to its thorough disinfection and high degree of reduction, etc., and is conducive to solving problems such as the wide dispersion of medical waste, high collection and transportation risks, and flexible disposal capabilities under the epidemic situation and grass-roots conditions. Therefore, developing small-scale in-situ rapid start-stop and safe disposal technologies and equipment based on pyrolysis incineration, and establishing a technical management system and commercial promotion model matching it have become urgent problems to make up for the short board in our country.

[0004] In addition, the macromolecular materials in medical waste will also undergo thermal decomposition under the action of heat. The final products of the thermal decomposition of hydrocarbon macromolecules are carbon, hydrogen, and lower hydrocarbons and asphalt, etc. Organic waste has thermal instability, and the property of decomposing organic matter into gaseous, liquid, and solid substances with smaller molecular weights when heated under aerobic or anaerobic conditions is the thermal decomposition characteristic of waste. Research practice shows that under aerobic conditions, a large amount of NO x 、SO 2 , including dioxins, will be produced in large quantities. Therefore, studying the realization mechanism of the pyrolysis atmosphere in an anaerobic or anoxic state plays an important role in controlling the generation of the above pollutants from the source. Summary of the Invention

[0005] In view of the above problems, the present invention aims to provide a small-scale mobile skid-mounted medium-temperature pyrolysis incineration complete set of devices for medical waste.

[0006] The technical solution of the present invention is as follows:

[0007] A small-scale mobile skid-mounted medium-temperature pyrolysis incineration complete set of medical waste treatment equipment, which includes a bearing platform system and an automatic control system, a feeding system, a heat treatment system, a flue gas purification system and a resource recovery system that are all arranged on the bearing platform system;

[0008] The feeding system is connected to the heat treatment system and is used to convey medical waste to the heat treatment system;

[0009] The heat treatment system is used to perform heat treatment on the medical waste, and the flue gas output end of the heat treatment system is connected to the flue gas purification system;

[0010] The flue gas purification system is used to purify the flue gas of the heat treatment system, and the resource recovery system is used to recover recyclables generated by the heat treatment system;

[0011] The automatic control system is respectively connected to the feeding system, the heat treatment system, the flue gas purification system and the resource recovery system.

[0012] Preferably, a material drying system is further provided between the feeding system and the heat treatment system.

[0013] Preferably, the feeding system includes an intelligent robotic arm and a feeding hopper, and the intelligent robotic arm can transfer medical waste into the feeding hopper.

[0014] Preferably, the heat treatment system includes a preheating unit, a pyrolysis unit and a pyrolysis gas cooling unit connected in sequence;

[0015] The pyrolysis unit includes a pyrolysis device, a slag discharge device and a gasification melting device connected together, and the pyrolysis device adopts an externally heated rotary pyrolysis furnace with a concentric circle structure;

[0016] The pyrolysis gas cooling unit includes a primary pyrolysis condenser, a secondary pyrolysis condenser, a pyrolysis oil storage tank and a water seal tank connected together. The input end of the primary pyrolysis condenser is connected to the pyrolysis unit, and the output end of the water seal tank is connected to the burner of the pyrolysis unit.

[0017] Preferably, the flue gas purification system includes a flue gas cooling unit, a filtering unit, an alkali liquor spraying device, a low-temperature plasma purification unit, a catalytic adsorption box, a fan and a chimney connected together.

[0018] Preferably, the flue gas cooling unit includes a primary heat exchanger and a secondary heat exchanger, and the filtering unit is arranged between the primary heat exchanger and the secondary heat exchanger.

[0019] Preferably, the filtering unit includes a graphite carbon fiber filtering unit and a ceramic membrane filtering unit connected together, and the catalytic adsorption box is an activated carbon adsorption box.

[0020] Preferably, the automatic control system is controlled based on a PLC.

[0021] Preferably, the carrying platform system adopts a skeletal semi-trailer flatbed truck.

[0022] Preferably, it further includes a pollutant sampling and detection system for sampling and detecting pollutants.

[0023] The beneficial effects of the present invention are as follows:

[0024] The present invention integrates an automatic control system, a feeding system, a heat treatment system, a flue gas purification system, and a resource recovery system. The seamless integration and collaborative work among the modules ensure the efficient operation of the system in a complex environment. The modular design of the system enables each subsystem to be independently upgraded and maintained, improving the flexibility and scalability of the system, and capable of efficiently and environmentally treating medical waste in medical waste treatment scenarios of different scales and requirements. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a system block diagram of the small-scale mobile skid-mounted medium-temperature pyrolysis incineration complete set of devices for medical waste of the present invention;

[0027] Figure 2 It is a partial structural schematic diagram of the small-scale mobile skid-mounted medium-temperature pyrolysis incineration complete set of devices for medical waste of the present invention;

[0028] Figure 3 It is a partial structural schematic diagram of the pyrolysis gas cooling unit of the present invention in a specific embodiment;

[0029] Figure 4 It is a structural schematic diagram of the pyrolysis device of the present invention in a specific embodiment;

[0030] Figure 5 It is a schematic diagram of the principle of the automatic control system of the present invention in a specific embodiment. Detailed Embodiments

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments in the present application and the technical features in the embodiments may be combined with each other. It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The term "including" or "comprising" or similar words used in the disclosure of the present invention means that the elements or items appearing before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items.

[0032] As Figures 1-5 shown, the present invention provides a set of small-scale mobile skid-mounted medium-temperature pyrolysis incineration equipment for medical waste, including a bearing platform system and an automatic control system, a feeding system, a heat treatment system, a flue gas purification system, and a resource recovery system all arranged on the bearing platform system;

[0033] The feeding system is connected to the heat treatment system and is used to convey medical waste to the heat treatment system;

[0034] The heat treatment system is used to perform heat treatment on the medical waste, and the flue gas output end of the heat treatment system is connected to the flue gas purification system;

[0035] The flue gas purification system is used to purify the flue gas of the heat treatment system, and the resource recovery system is used to recover the recyclables generated by the heat treatment system;

[0036] The automatic control system is respectively connected to the feeding system, the heat treatment system, the flue gas purification system, and the resource recovery system.

[0037] In the present invention, through the heat treatment system, medical waste can be turned into a uniform (oil and gas mixture) pyrolysis gas stream by pyrolysis, realizing stable pyrolysis gas production in the medium temperature range of 220 - 450 °C, stable combustion, and then realizing stable treatment of waste gas, while achieving resource recovery: creating an achievable pyrolysis atmosphere, realizing stable recycling of thermal energy, and realizing the recovery of valuable components in medical waste, producing plastic oil and carbon materials (drawing on industry research results), comprehensively realizing the harmless treatment of medical waste and the recycling of resources, and minimizing the harm to the environment to the greatest extent.

[0038] In a specific embodiment, a material drying system is further provided between the feeding system and the heat treatment system. Optionally, the drying system includes a drying drum. In this embodiment, by setting up the material drying system, it can be ensured that the garbage can be processed quickly and efficiently when entering the heat treatment stage. Through the continuous heating and rolling action of the drying drum, the moisture in the garbage is effectively evaporated, so that the garbage is in a relatively dry state before entering the heat treatment system. This pretreatment method avoids consuming too much heat energy in the subsequent heat treatment system for evaporating moisture, thus significantly improving the efficiency of the entire heat treatment process.

[0039] In addition, reducing the moisture content in the garbage can also effectively reduce the amount of water vapor generated during the incineration process. A large amount of water vapor may cause corrosion to the incinerator, affecting the service life and operation stability of the equipment. By pre-drying the garbage, this corrosion effect can be alleviated, the service life of the incinerator and related equipment can be extended, and the maintenance cost can be reduced.

[0040] At the same time, the drying process also prevents moisture from entering the subsequent resource recovery system. If a large amount of moisture enters the condensate oil collection tank, it will mix with the oil stain in the tank, forming oily wastewater that is difficult to treat. This not only increases the difficulty and cost of wastewater treatment, but also may cause secondary pollution to the environment. Therefore, by further setting the material drying system between the feeding system and the heat treatment system, the generation of oily wastewater can be reduced at the source, which is beneficial to environmental protection and the sustainable utilization of resources.

[0041] In a specific embodiment, the feeding system includes an intelligent robotic arm and a feeding hopper, and the intelligent robotic arm can transfer medical waste into the feeding hopper. Optionally, the intelligent robotic arm is a multi-degree-of-freedom open robotic arm, and the feeding system is positioned based on a high-precision 3D camera scanning and positioning algorithm. The robotic arm can accurately identify and position the position and posture of the trash can at the millimeter level. The multi-environment adaptability of the robotic arm is realized, and the automatic object recognition, grasping and transporting of the turnover box are completed for feeding. The intelligent robotic arm ensures the accuracy of actions such as clamping, lifting, and dumping, avoiding material spillage caused by position deviation. The feeding hopper is used for caching and sealing medical waste to facilitate the reaction of low-temperature anaerobic pyrolysis. The continuous sealing conveying device can evenly convey the crushed material to the low-temperature anaerobic pyrolysis furnace while ensuring the sealing of the feeding end.

[0042] In a specific embodiment, the heat treatment system includes a preheating unit, a pyrolysis unit, and a pyrolysis gas cooling unit connected in sequence;

[0043] The pyrolysis unit includes a connected pyrolysis device, a slag discharging device, and a gasification and melting device, and the pyrolysis device uses an externally heated rotary pyrolysis furnace with a concentric circle structure;

[0044] The pyrolysis gas cooling unit includes a first-stage pyrolysis condenser 100, a second-stage pyrolysis condenser 200, a pyrolysis oil storage tank 300, and a water seal tank 400 that are connected in sequence. The input end of the first-stage pyrolysis condenser 100 is connected to the pyrolysis unit, and the output end of the water seal tank 400 is connected to the burner of the pyrolysis unit.

[0045] In the above embodiment, an externally heated rotary pyrolysis furnace with a concentric circle structure is adopted. Medical waste is inside the pyrolysis furnace. First, it is heated up and dried in the pyrolysis furnace and then pyrolyzed. The heat required for pyrolysis is introduced from the outside through the furnace wall. The fuel burns and heats in the outer pyrolysis gas combustion chamber. The medical waste in the furnace separates the residue and volatile components. The residue is sent to the cooling slag discharging device, and the pyrolysis gas enters the oil condenser through the gas bag. The liquid oil condensed enters the storage oil tank. The uncondensed cracked gas returns to the hot blast stove or the waste gas combustion chamber through the water seal for combustion.

[0046] In a specific embodiment, as Figure 4 shown, the pyrolysis device includes a feed inlet 1, a smoke exhaust port 2, a furnace liner 3, a slag discharger 4, a pyrolysis gas outlet 5, a slag discharge hopper 6, a screw propeller 7, a rotary drive device 8, a gasification and melting chamber 9, a pyrolysis gas combustion chamber 10, a slag discharge channel 11, a fuel oil burner 12, refractory bricks 13, rollers 14, and a plasma torch 15.

[0047] The residue after the combustion of medical waste has not been fully oxidized and still belongs to hazardous waste. The residue is discharged from the pyrolysis furnace through the slag discharger by the screw propeller and falls into the temporary storage slag discharge hopper. The residue is pushed into the gasification and melting chamber by the screw propeller, and pure oxygen is introduced to raise the temperature to about 2000 °C to gasify and melt the carbon and tar in the residue. The process of residue gasification and melting not only provides heat for the pyrolysis furnace, reduces energy consumption, and saves energy, but also the residue finally forms molten slag, which is disposed of as ordinary solid waste. The final volume of the solid waste becomes smaller, achieving reduction, energy utilization, and harm reduction, with multiple benefits achieved at one stroke.

[0048] The residue generated by the incinerator is subjected to gasification and melting treatment in a pure oxygen environment to convert the organic components in the residue into combustible gas, and at the same time, the inorganic components are melted and solidified at high temperature to form stable molten slag. The combustible gas generated during the gasification process can be used as fuel or chemical raw material, realizing the recycling of resources. The molten slag can be used as building materials or landfill materials, further improving the resource utilization rate.

[0049] In the above embodiments, a plasma torch is used to rapidly heat up to the temperature at which stable gas production occurs, and air cooling is used to achieve rapid cooling. Optionally, a 50Kw plasma torch is used as the internal heat source during the heating-up stage. This is a high-energy heat source that can heat medical waste to the required temperature within a short period of time. Since the carrier gas of the plasma torch is nitrogen, it can quickly displace the oxygen in the pyrolysis furnace to achieve a reducing atmosphere. At the same time, in order to further accelerate the heating process, the present invention also uses a fuel compensation system as the external heat source during the heating-up stage. This system can provide additional heat outside the pyrolysis furnace, thereby accelerating the heating process of medical waste. Moreover, it can quickly raise the temperature of the secondary combustion chamber to above 850°C. These two heat sources heat the medical waste in an oxygen-free atmosphere, and can quickly heat the medical waste to the temperature at which stable gas production occurs, and this process can be completed within 1 hour. After pyrolysis is completed, the outer wall of the pyrolysis furnace liner is designed for enhanced heat transfer, so that heat can be more effectively dissipated to the pyrolysis gas combustion chamber. By blowing air into the pyrolysis gas combustion chamber, the materials in the furnace are cooled rapidly by air cooling using the heat transfer of the outer wall of the pyrolysis furnace liner. This cooling method is both effective and safe, and can ensure that the pyrolysis furnace quickly returns to a safe state after treating medical waste.

[0050] In a specific embodiment, the main equipment of the externally heated rotary pyrolysis furnace is composed of four major parts: an externally heated furnace body, a supporting device, a driving device, and a slag discharging device. Related other equipment includes the connection of various process pipelines (such as the supply of fuel, combustion-supporting air, compressed air, cooling water, etc.), a combustion device, a smoke exhaust device, a lubrication device, a cooling device, various detection and control devices, etc. The furnace operates in a periodic manner and can rotate within a range of 360°.

[0051] In the above embodiments, the non-condensable combustible gas during pyrolysis is directly burned in the combustion chamber as an efficient heat source to heat the furnace chamber. By setting up a pyrolysis gas cooling unit including a primary pyrolysis condenser and a secondary pyrolysis condenser, oil-gas separation can be achieved and pyrolysis oil can be recovered. First, the pyrolysis gas enters the primary pyrolysis condenser for preliminary cooling. Here, the heavy-component pyrolysis oil will be condensed, thereby achieving preliminary separation from the gas. Then, these preliminarily cooled pyrolysis gases enter the secondary pyrolysis condenser for further cooling. Through this process, the remaining pyrolysis oil will also be condensed, thereby achieving more thorough oil-gas separation. The recovered pyrolysis oil can not only be used as a fuel supplement for the combustion chamber to improve combustion efficiency, but also be resourcefully utilized according to actual needs, such as being converted into energy in other hazardous waste incineration disposal industries. Such a design not only improves the energy utilization rate of the pyrolysis process, but also realizes the maximization of resource utilization, reducing environmental pollution and operating costs.

[0052] In a specific embodiment, the flue gas purification system includes a connected flue gas cooling unit, a filtering unit, an alkali solution spraying device, a low-temperature plasma purification unit, a catalytic adsorption box, a fan and a chimney.

[0053] In the above embodiment, the flue gas cooling unit rapidly cools the flue gas temperature; the filtering unit is mainly used to achieve the coordinated treatment of dust, particulate mercury and particulate dioxins; the removal agent of the alkali solution spraying device is mainly sodium hydroxide solution, which can effectively remove SO in the flue gas. 2 , HCl, NO 2 After treatment, the purification rate of acidic gases such as carbon monoxide and phosphorus can reach more than 80%, and the purified waste gas meets the emission requirements and is lower than the national emission standards; the low-temperature plasma purification unit can efficiently remove dioxin pollutants through the action of high-frequency pulse low-temperature plasma; the catalytic adsorption box can assist the low-temperature plasma purification unit to efficiently remove dioxins and ensure that the tail gas meets the emission standards.

[0054] In a specific embodiment, the flue gas cooling unit includes a primary heat exchanger and a secondary heat exchanger, and the filtering unit is arranged between the primary heat exchanger and the secondary heat exchanger.

[0055] In the above embodiment, the flue gas cooling unit rapidly cools the flue gas temperature in two stages; the first stage heat exchanger cools the high temperature flue gas to about 200°C, avoiding the temperature range where dioxins are regenerated, and reducing the amount of dioxin-like pollutants generated. The second stage heat exchanger cools the flue gas temperature from 200°C to below 50°C, creating a low temperature environment for subsequent flue gas purification.

[0056] In a specific embodiment, the filtration unit includes a connected graphite carbon fiber filtration unit and a ceramic membrane filtration unit, and the catalytic adsorption box is an activated carbon adsorption box.

[0057] In the above embodiment, the graphite fiber has excellent mechanical strength and thermal stability, and the fiber will not break due to temperature changes or mechanical stress, thereby maintaining the stability of its filtering performance and not causing alkali metal poisoning. Graphite fiber also has good chemical stability and can maintain the stability of its structure and performance in various chemical environments, which is particularly important for filtering applications that need to withstand different composition conditions, and will not cause functional failure of the filter caused by scaling on the surface of the filter material. The hydrophobicity and relatively thin atomic thickness of graphite fiber can improve the filtering efficiency and has a wide range of applications in the field of filtration, including but not limited to water purification, seawater desalination and other fields. It can be used for reference in dust removal and acid gas control in medical waste flue gas with high moisture content.

[0058] The ceramic membrane filtration unit can overcome the defects of traditional bag filters, such as large volume and poor high-temperature resistance, and effectively filter two-thirds of the particulate-phase dioxins emitted from the pyrolysis furnace. In addition, by loading a vanadium-titanium system dioxin catalyst on the ceramic dust removal tube, the "capture + catalysis" high-efficiency removal ability of dioxins can be effectively achieved.

[0059] In a specific embodiment, the automatic control system is controlled based on PLC. Optionally, the automatic control system realizes temperature control and speed control of the pyrolysis process through advanced control strategies, including generalized predictive controllers, PID controllers, etc., and methods such as quickly rolling and stirring medical waste in the rotary kiln, so that the pyrolysis process can be precisely controlled and gas production can be stable. And the data is imported into the database, and machine learning is carried out through a large amount of data to better realize the real-time dynamic adjustment of the system.

[0060] In the above embodiment, the adaptability of the system to different types of medical waste can be enhanced through the automatic control system. Heating is carried out through a plasma torch with adjustable power and a fuel compensation system, and cooling is carried out in cooperation with an air distribution and spraying system, which can accurately control the temperature of the pyrolysis gas combustion chamber, improve the operation efficiency and safety of the equipment, reduce energy consumption and emissions, and provide an efficient and environmentally friendly solution for medical waste treatment.

[0061] In a specific embodiment, the carrying platform system adopts a skeleton semi-trailer flatbed truck. In this embodiment, the skeleton semi-trailer flatbed truck has a lifting function and can adjust the height according to actual needs to adapt to different transportation requirements. This design not only improves the flexibility of transportation but also increases the convenience of operation. Optionally, the skeleton semi-trailer flatbed truck is also provided with a large-stroke ratio secondary composite outrigger. This outrigger design has a large telescopic range and can be adjusted according to actual needs, so as to better meet the usage requirements in different scenarios. At the same time, due to its secondary composite structure, the outrigger is more excellent in load-bearing capacity and can stably support the entire semi-trailer body. In addition, by optimizing the structure and material selection, the weight distribution of the platform can be made more uniform, thereby reducing the center of gravity of the platform. In this way, the vehicle is more stable during driving and reduces the safety hazards caused by too high a center of gravity.

[0062] In a specific embodiment, a pollutant sampling and detection system for sampling and detecting pollutants is also included.

[0063] In a specific embodiment, the medical waste miniaturized mobile skid-mounted medium-temperature pyrolysis incineration complete set of equipment described in the present invention is used to treat medical waste, which specifically includes the following steps:

[0064] First, use the intelligent robotic arm to fill the pyrolysis furnace at one time. It takes about 50 boxes of 100L standard turnover boxes to load, and then close the cover door. Start the plasma torch and diesel burner to heat the material from the inside and outside respectively. When the furnace temperature rises to 220℃, the temperature of the pyrolysis gas combustion chamber will also rise to 850℃, and the stable combustion of the pyrolysis gas will begin. As the furnace temperature continues to rise, when it reaches 450℃, the pyrolysis process ends. In order to maintain the normal operation of the pyrolysis gas combustion chamber for a period of time, it is necessary to start the diesel burner. At the same time, nitrogen is introduced to replace the internal pyrolysis gas into the combustion chamber for combustion. After the replacement is completed, the furnace is shut down. At this time, start the blower to cool the pyrolysis furnace to reduce the temperature in the furnace and enter the next loading cycle.

[0065] In summary, the present invention is provided with a condensation system composed of a pyrolysis gas cooling unit in a heat treatment system and a flue gas cooling unit in a flue gas purification system, both of which adopt secondary cooling, so that the gas generated during the pyrolysis process can be fully condensed and recovered, and reusable resources such as plastic oil can be produced, thereby improving energy utilization and reducing operating costs. The non-condensable pyrolysis gas is recycled in the combustion chamber, realizing efficient conversion and reuse of energy within the system, further enhancing the sustainability and economic benefits of the system. At the same time, the system intelligently adjusts the amount of external fuel used by real-time monitoring of the combustion of the fuel and the amount of pyrolysis gas generated, thereby further improving the energy efficiency of the system. By subjecting the residue generated in the pyrolysis furnace to gasification and melting treatment in a pure oxygen environment, the combustible gas generated during the gasification process can be used as fuel or chemical raw material, realizing resource recycling. The molten slag can be used as a building material or landfill material, further improving resource utilization.

[0066] Based on the characteristics of acidic gases after pyrolysis of medical waste, the present invention introduces a graphite carbon fiber filter unit and a ceramic membrane filter unit to achieve dust removal + acidic gas removal (physical desalination): the layered structure of graphite fibers can form tiny gaps between fibers, and these gaps can be used to filter out impurities in the liquid. This structure makes graphite fibers an efficient filtering material, avoiding damage to the pipeline system caused by corrosive (gas, water) after filtration.

[0067] The present invention adopts a Generalized Predictive Control (GPC) controller and a PID controller, and combines with AI algorithms. Through machine learning with a large amount of data, it realizes real-time dynamic adjustment of the system, improves the adaptability of the system to different medical wastes, controls the temperature of the pyrolyzer combustion chamber, and controls the temperature of the pyrolysis gas combustion chamber by means of a power-adjustable plasma torch, a fuel compensation system for supplementary heating, and a air distribution and spraying system for cooling. It monitors the temperature, combustion condition and oil-gas separation process in the pyrolysis furnace in real time, automatically optimizes the parameter settings of each link to ensure the maximization of the recovery rates of plastic oil and carbon. It improves the operation efficiency and safety of the equipment, reduces energy consumption and emissions, and provides an efficient and environmentally friendly solution for medical waste treatment.

[0068] The entire system of the present invention consists of multiple modules such as a feeding system, a heat treatment system, a flue gas purification system, a resource recovery system, an automatic control system, and a pollutant sampling and detection system. The seamless integration and collaborative work among the modules ensure the efficient operation of the system in a complex environment. The modular design of the system enables each subsystem to be independently upgraded and maintained, improving the flexibility and scalability of the system, and is applicable to medical waste treatment scenarios of different scales and requirements.

[0069] The present invention adopts an externally heated rotary pyrolysis furnace, uses dual heat sources to rapidly increase the temperature, and ensures the stability and efficiency of the pyrolysis process through a unique temperature control mechanism, effectively treating medical waste and realizing resource recovery. The system adopts a variety of technologies (graphite carbon fiber, ceramic dust removal, alkali liquid spraying, low-temperature plasma) to achieve efficient purification and removal of different pollutants (such as dioxins, acidic gases, heavy metals), ensuring that the emissions meet environmental protection standards. The moisture in the garbage is removed through a drying drum, improving the incineration efficiency and extending the service life of the equipment. At the same time, it can also prevent moisture from entering the subsequent recovery system and reduce the generation of difficult-to-treat oily wastewater in the condensate oil collection tank.

[0070] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to be equivalent variations within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent variation and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A small-scale mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste, characterized in that: It includes a carrying platform system and an automatic control system, a feeding system, a heat treatment system, a flue gas purification system and a resource recovery system all arranged on the carrying platform system; The feeding system is connected to the heat treatment system and is used to transport medical waste to the heat treatment system; The heat treatment system is used to heat treat the medical waste, and the smoke output end of the heat treatment system is connected to the smoke purification system; The flue gas purification system is used to purify the flue gas of the heat treatment system, and the resource recovery system is used to recover the recyclables generated by the heat treatment system; The automatic control system is connected to the feeding system, the heat treatment system, the flue gas purification system and the resource recovery system respectively.

2. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 1 is characterized in that: A material drying system is also provided between the feeding system and the heat treatment system.

3. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 1 is characterized in that: The feeding system includes an intelligent robotic arm and a feeding hopper, and the intelligent robotic arm can transfer medical waste into the feeding hopper.

4. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 1 is characterized in that: The heat treatment system comprises a preheating unit, a pyrolysis unit and a pyrolysis gas cooling unit which are connected in sequence; The pyrolysis unit comprises a connected pyrolysis device, a slag removal device and a gasification and melting device, wherein the pyrolysis device adopts an external heat rotary pyrolysis furnace with a concentric circle structure; The pyrolysis gas cooling unit includes a connected primary pyrolysis condenser, a secondary pyrolysis condenser, a pyrolysis oil storage tank and a water seal tank. The input end of the primary pyrolysis condenser is connected to the pyrolysis unit, and the output end of the water seal tank is connected to the burner of the pyrolysis unit.

5. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 1 is characterized in that: The flue gas purification system comprises a connected flue gas cooling unit, a filtering unit, an alkali solution spraying device, a low-temperature plasma purification unit, a catalytic adsorption box, a fan and a chimney.

6. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 5 is characterized in that: The flue gas cooling unit includes a primary heat exchanger and a secondary heat exchanger, and the filter unit is arranged between the primary heat exchanger and the secondary heat exchanger.

7. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 5 is characterized in that: The filter unit comprises a connected graphite carbon fiber filter unit and a ceramic membrane filter unit, and the catalytic adsorption box is an activated carbon adsorption box.

8. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 1 is characterized in that: The automatic control system is controlled based on PLC.

9. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to claim 1 is characterized in that: The bearing platform system adopts a skeleton-type semi-trailer flatbed truck.

10. The miniaturized mobile skid-mounted medium-temperature pyrolysis and incineration device for medical waste according to any one of claims 1 to 9, characterized in that: Also included is a pollutant sampling and detection system for sampling and detecting pollutants.

Images