76 results about "Municipal solid waste" patented technology

The invention provides a multi-stage identification plastic automatic separation and winnowing electrostatic synergistic separation system and method, and relates to the technical field of solid waste resourceful treatment. The system comprises an intelligent bag breaking and feeding module, a paving and shaping light source enhancing module, an AI identifying and stripping module, a wet material drying module, a negative pressure winnowing module, a high-voltage electrostatic deflection module and a multi-path collecting and outputting module. According to the system, automatic feeding and bag body breaking of household garbage are achieved, plastic materials capable of being recognized are spread to reduce the overlapping rate, efficient classification is conducted through the AI technology, and accurate sorting is conducted through wet drying and electric field electrostatic deflection. The plastic sorting efficiency is effectively improved, and equipment energy consumption and occupied space are reduced.

The invention provides a process and equipment for preparing biomass briquette from municipal solid waste. The invention relates to a process for preparing biomass briquette coal from municipal solid waste. The process comprises the following steps: S1, pretreating waste impurities; s2, drying and modifying; s3, crushing and mixing; s4, molding and pressing; s5, curing and curing; and S6, finished product detection and packaging. According to the technology for preparing the biomass briquette from the municipal solid waste, non-combustible impurities in the waste are precisely removed through pretreatment, the bonding performance and combustion performance of materials are improved through modification treatment, the forming and curing technology is precisely regulated and controlled, and the biomass briquette is prepared. The prepared biomass briquette is high in strength, stable in calorific value, high in combustion efficiency and low in pollutant emission, biomass components in household garbage are converted into clean renewable energy sources, environmental pollution caused by garbage landfill and incineration is effectively reduced, the resource utilization rate of waste is increased, the pressure of fossil fuel shortage is relieved, and environmental protection is achieved. And the method has remarkable environmental benefits and social benefits.

Carbon capture for industrial applications, such as power plants, municipal solid waste facilities, cement production, iron & steel, petrochemicals, desalination and refineries, is disclosed herein. Embodiments employ a cryogenic system and process to capture carbon dioxide, ensuring efficient and effective capture, while also maximizing solvent recovery. This advancement enables a capability to meet the demands of diverse industries with a solution that reduces energy penalties and enhances overall operational efficiency. The approach is scalable, modular, and compact, while minimizing energy consumption.

This invention discloses a fully automated centralized municipal solid waste treatment equipment and method, relating to the technical field of waste treatment equipment. It includes a feeding component, a crushing component, a conveying component, a drying component, an incineration mechanism, and a recycling mechanism. The crushing component comprises a first crushing mechanism and a second crushing mechanism. A feeding component is located on one side of the first crushing mechanism. Several sets of conveying components are provided, with one set installed on one side of the bottom surface of the first crushing mechanism. This device automatically processes waste materials by feeding them into the crushing components, followed by crushing, ultimately transforming the waste materials into usable products. The equipment employs a fully automated control system, enabling automatic collection, crushing, and incineration of waste, improving the efficiency and quality of waste treatment, achieving harmless and resource-based utilization of waste, reducing environmental pollution, and enabling resource utilization of waste.

This utility model discloses a homogenization device for medical waste fly ash and municipal solid waste fly ash, comprising a medical fly ash silo, a municipal solid waste fly ash silo, and a homogenization chamber. The medical fly ash silo and the municipal solid waste fly ash silo are respectively equipped with a first and a second stirring device, which are connected by a synchronous drive device. The bottom of the medical fly ash silo and the municipal solid waste fly ash silo are equipped with forward and reverse spiral blades, and the output ends of the forward and reverse spiral blades are respectively equipped with a first and a second star-shaped feed valve. The bottom outlets of the first and second star-shaped feed valves are respectively connected to the two ends of the homogenization chamber. The homogenization chamber is equipped with a mixing shaft, which has forward spiral ribbons, reverse spiral ribbons, and shearing teeth. An ultrasonic vibrating plate is installed on the inner wall of the homogenization chamber, and a pneumatic hammer is installed on the outside of the homogenization chamber. This utility model can mix medical waste fly ash and municipal solid waste fly ash in the required proportion and achieve uniform premixing, preparing for subsequent treatment processes, reducing treatment costs, and improving treatment efficiency.

The utility model relates to pretreatment equipment for municipal solid waste, which comprises a rack, a plurality of uniformly distributed spiral screen rollers are arranged in the rack, the spiral screen rollers are fixedly mounted on the rack through screen roller bearing seats, the screen roller bearing seats are fixedly arranged on the outer wall of one side of the rack, and the screen roller bearing seats are fixedly arranged on the outer wall of the other side of the rack. A sliding groove is formed in the outer wall of the machine frame, a shaft groove is formed in the outer wall of the machine frame, a rotating shaft at one end of the spiral screen roller penetrates through the sliding groove to be movably connected with the screen roller bearing seat in an inserted connection mode, a sliding groove is further fixedly formed in the outer wall of the machine frame, the sliding groove is located below the shaft groove, and a sliding block is arranged in the sliding groove in a sliding mode. According to the pretreatment equipment for the municipal solid waste, the distance between the spiral screen rollers is adjusted through sliding of the sliding blocks in the sliding grooves, so that the screening particle size is adjusted, the spiral screen rollers can be prevented from falling off in the adjusting process, meanwhile, the pretreatment equipment is suitable for transmission between the adjusted spiral screen rollers through adjustment of the transmission gears, and operation is convenient.

This utility model provides a desulfurization device for flue gas from municipal solid waste combustion, comprising: a combustion component and a desulfurization component. Insulating bricks are fixedly installed inside the combustion component. Both the combustion component and the insulating bricks are connected through multiple air inlet pipes. An ash removal mechanism is installed inside the combustion component. The top of the desulfurization component is fixedly installed to a support, and an end cap is fixedly installed in the middle of the support. The end cap is fixedly connected to a water inlet pipe, and a spraying mechanism is rotatably connected inside the end cap. This application uses a combustion component to incinerate municipal solid waste and sets up multiple air inlet pipes for the supply of air and oxygen, which can achieve complete combustion to improve the treatment effect. Combustion residue is collected by a guide plate to ensure air intake and improve combustion completeness. The desulfurization component absorbs harmful gases in the flue gas. Multiple ring pipes are used to arrange the nozzles, and the nozzles are designed so that the air pressure generated during spraying drives the ring pipes to rotate, improving the desulfurization effect.

The utility model discloses a novel low-pressure evaporation device for household garbage leachate, which relates to the technical field of leachate treatment and comprises a circulating pump III for conveying concentrated liquor into a triple-effect heater and / or a material transfer pump II, a liquid outlet end of the triple-effect heater is connected with a side port of the triple-effect evaporation chamber, and a bottom port of the triple-effect evaporation chamber is connected with the circulating pump III and the preheater; the liquid inlet of the circulating pump II used for conveying the concentrated liquid to the material transfer pump I and / or the second-effect heater is connected with the liquid outlet ends of the second-effect evaporation chamber and the material transfer pump II, and the liquid outlet end of the second-effect heater is connected with the side port of the second-effect evaporation chamber; according to the device, pretreated concentrated liquor is evaporated, generated steam condensed cold water is recycled to the circulating water tank after being cooled, and evaporated and concentrated mother liquor enters the concentrated liquor back-spraying tank for back-spraying incineration, so that the aims of effectively reducing the concentrated liquor and effectively incinerating the concentrated liquor are fulfilled.

The utility model discloses a movable harmless household garbage treatment device which comprises a hook arm box, a garbage collection box and a garbage collection box, an incinerator, a cooling system, a dust removal system and a smoke exhaust system are arranged in the hook arm box, the incinerator is connected with the cooling system, the cooling system is connected with the dust removal system, and the dust removal system is connected with the smoke exhaust system. According to the utility model, the garbage is conveyed to a position where the garbage is treated to be treated, a system required by the garbage treatment is arranged in the hook arm box, the hook arm box can be used for transportation, and the garbage is directly treated in the transportation process, so that the garbage treatment time is shortened. Fuel oil is not needed, so that the cost is saved. The movable harmless household garbage treatment equipment is directly transported to the position where garbage is located and can leave after treatment is completed, and the transportation frequency is reduced.

The invention discloses a multi-air-chamber high-temperature low-oxygen self-combustion fluidized bed waste incineration boiler, and belongs to the technical field of solid waste energy treatment. According to the boiler, a multi-air-chamber structure is adopted for achieving self-adaptive fluidized combustion of garbage, a traditional cyclone separator and a traditional material returning system are omitted, the zero-power-consumption built-in inertia separation technology is integrated, and a low-resistance and high-efficiency static fluidized bed system is formed; the core of the method is that a technology of recirculating high-temperature flue gas to a dense-phase region is introduced, the high-temperature flue gas of about 500 DEG C in a third return stroke is accurately introduced back to the dense-phase region of the fluidized bed, and dual functions of energy feedback and combustion environment reconstruction are realized: on one hand, the temperature stability of a bed layer is improved through sensible heat reinjection, and self-sustaining combustion without external combustion supporting is realized; and on the other hand, the oxygen concentration of the dense-phase region is diluted through oxygen-poor flue gas, the ideal low-oxygen, high-temperature and high-turbulence combustion environment is constructed, generation of NOx and dioxin is actively inhibited from the chemical reaction path level, and the original emission concentration of pollutants is remarkably reduced. The method is suitable for efficient low-carbon incineration treatment of multi-source waste such as municipal solid waste and industrial solid waste.

The present invention relates to the process for upcycling synthetic and organic waste into valuable commodities. This invention offers method capable of transferring and managing mixed feedstock streams, including plastic waste, biological waste, municipal solid waste, municipal sewage sludge, and shredder residue, to produce gas, oil, light hydrocarbons, e.g., circular naphtha, specialty chemicals, and carbon solids that can be utilized directly or subjected to further refinement.

This invention discloses a high-efficiency control system for the energy utilization and pollutant treatment of municipal solid waste. A pyrolysis gasification furnace is sequentially connected to a secondary combustion chamber, a two-stage water-cooled wall, a quench chamber, and a semi-dry desulfurization tower. A gravity settling chamber is installed in the middle flue gas duct of the two-stage water-cooled wall. The water pipes at the outlet of the two-stage water-cooled wall are sequentially connected to a cooling tower, a water pump, and a water supply pipe to the quench chamber. The flue gas is desulfurized and dechlorinated through the semi-dry desulfurization tower. This invention achieves ultra-low pollutant emissions. The use of semi-dry cyclone desulfurization technology increases the flue gas flow time, improves desulfurization and dechlorination efficiency, and eliminates wastewater discharge. Simultaneously, the use of a two-stage water-cooled wall with rotary ammonia injection in the later stage reduces nitrogen oxide emissions and controls the denitrification temperature, achieving a highly efficient denitrification effect.

The invention relates to an RDF combustion rod based on municipal solid waste and a preparation method thereof, and the preparation method comprises the following steps: selecting municipal solid waste with a calorific value, and carrying out low-temperature drying-microwave modification pretreatment to obtain pretreated domestic waste; sequentially carrying out primary crushing, sorting, impurity removal and crushing on the pretreated household garbage to obtain a crushed material; performing high-temperature activation on bentonite to obtain high-temperature activated bentonite; soaking sepiolite with a fibrous structure in a hydrochloric acid solution, washing with water until the sepiolite is neutral, and drying to obtain modified sepiolite; and carrying out high-temperature roasting-ultrasonic dispersion treatment on sludge gasification slag to obtain pretreated sludge gasification slag, mixing the pretreated sludge gasification slag with the crushed material, high-temperature activated bentonite and modified sepiolite, and carrying out pressure forming to obtain the RDF combustion rod. Municipal solid waste with a calorific value is pretreated, so that the reaction activity is improved; and the pretreated sludge gasification slag is used as a catalyst, so that the combustion performance of the RDF combustion rod is remarkably improved.

This invention discloses a method for preparing ceramsite from municipal solid waste and industrial solid waste, and the ceramsite itself. The raw materials, by dry weight percentage, are: 30%–50% biogas residue, 10%–30% desulfurization ash, 15%–25% desilication sludge cake, and 15%–25% waste bleaching clay. This invention also provides a method for preparing ceramsite from municipal solid waste and industrial solid waste. By classifying municipal solid waste at the source, using biogas residue from fermentation as the main material, and co-processing desulfurization ash, desilication sludge cake, and waste bleaching clay, this method achieves multiple benefits, including waste-to-waste treatment, resource utilization, and safe disposal of hazardous waste, resulting in significant environmental, social, and economic benefits.

The present application relates to the technical field of environmental protection, in particular to a device for treating fly ash from incineration of municipal solid waste. The device comprises: an ash discharge unit, which comprises an air intake pipe, an air output pipe, an intersection pipe arranged between the air intake pipe and the air output pipe, and an ash accumulation cavity arranged at the bottom of the intersection pipe; and an ash removal unit, which comprises a driving assembly arranged on the outer side of the intersection pipe, a mounting assembly arranged inside the intersection pipe and connected to the driving assembly, and a filter assembly arranged on the mounting assembly. In the device for treating fly ash from incineration of municipal solid waste, by means of the filter assembly rotating in the intersection pipe, fly ash is filtered after entering the intersection pipe and being discharged from the air output pipe; and when the filter assembly passes through the air intake pipe and the intersection pipe, the fly ash passes through the filter assembly in a reverse direction, so as to achieve a cleaning effect, thereby prolonging the service life of the filter assembly.

This utility model discloses an inverted submerged dosing and stirring device, including a reaction tank, a tank body within the reaction tank, and a stirring motor embedded in the bottom wall of the tank body at the bottom of the tank body. A stirring shaft is provided within the tank body, and the stirring shaft is drively connected to the motor shaft of the stirring motor. Several stirring blades are provided on the stirring shaft, and the stirring blades are inclined upwards. Driven by the stirring motor, the stirring blades rotate with the stirring shaft to form an axial swirling flow from bottom to top. This utility model can reduce the volume of the reaction tank, thereby reducing the volume and space occupancy of municipal solid waste leachate treatment equipment.

The utility model discloses a novel feed hopper sealing structure for household garbage power generation, relates to the technical field of household garbage power generation, aims to solve the problems that an existing sealing structure is prone to being blocked and abraded and inconvenient to maintain, and comprises a feed hopper, an upper sealing plate and a lower sealing plate. The inclination degrees of the front plate and the rear plate are different. The two groups of upper sealing plates are symmetrical to a top opening of the feeding hopper, are matched with upper reset grooves through traction columns and guide columns, and are reset by upper reset springs to realize top sealing; according to the feeding hopper sealing structure, through double sealing and cooperation of all parts, the problems that an existing feeding hopper sealing structure is poor in sealing performance, unsmooth in feeding and the like are solved, and the feeding hopper sealing structure has the advantages of being excellent in sealing performance, smooth in feeding, stable, reliable, convenient to maintain and the like; odor dust can be effectively prevented, the equipment environment is maintained, and the power generation efficiency is improved.

This utility model relates to the field of biosynthetic gas treatment technology, specifically disclosing a process system for the co-production of solid wax, liquid hydrocarbons, and hydrogen from biosynthetic gas Fischer-Tropsch synthesis. The system comprises a pretreatment system, a blower system, a compression system, a shift converter system, a desulfurization system, an MDEA decarbonization system, a PSA hydrogen extraction system, a desorbed gas compression system, a fine desulfurization and pressurization system, and a Fischer-Tropsch synthesis system, connected in sequence. This process system utilizes biosynthetic gas from the pyrolysis and gasification of municipal solid waste, producing solid wax, liquid hydrocarbons, and hydrogen through a combination of technologies including Fischer-Tropsch synthesis and pressure swing adsorption. This system converts organic matter in waste into high-value-added chemicals such as solid wax, liquid hydrocarbons, and hydrogen, achieving resource utilization and reducing environmental pollution. Furthermore, the process system can adjust the types and quantities of products according to market demand to maximize economic benefits.

This invention relates to the field of waste incineration system technology, specifically to an energy-saving oxygen-enriched incineration system for municipal solid waste in high-altitude areas. The system includes an incinerator, a secondary combustion section, and an exhaust pipe connected in sequence. The incinerator contains a primary combustion chamber with a first combustion grate. An air supply section is located on the side of the incinerator, containing a mixing chamber. The air supply section is equipped with oxygen supply equipment and a blower connected to the mixing chamber. A horizontal air pipe connected to the mixing chamber is horizontally arranged within the primary combustion chamber. Several vertical air pipes are vertically arranged above the horizontal air pipes, with their upper ends positioned above the first combustion grate. Several short exhaust pipes are arranged on the outer wall of the vertical air pipes, with the exhaust pipes angled downwards from one end connected to the vertical air pipe to the other. This invention addresses the problem in existing technologies where increased energy consumption during the incineration of municipal solid waste in high-altitude areas is easily caused by factors such as oxygen content and temperature.

This invention belongs to the field of environmental protection and discloses a multi-stage integrated purification method for landfill leachate separation reaction. The method uses an evaporator to convert volatile organic compounds, ammonia nitrogen, and water in the landfill leachate into a gaseous phase. High-boiling-point organic pollutants and inorganic salts that cannot be evaporated are further concentrated in a vacuum evaporator to form a mixed slurry, which is then transported to a pyrolysis furnace for high-temperature pyrolysis in an oxygen atmosphere. The purified effluent indicators throughout the process meet the national "Pollution Control Standard for Municipal Solid Waste Landfills." Furthermore, this method comprehensively utilizes the waste heat of the purified water, the latent heat of steam, and the heat of oxygen-induced decomposition reaction, significantly reducing energy consumption in the purification process and eliminating the generation of secondary pollution.

This invention discloses a process for co-producing potassium sulfate and sodium bicarbonate from municipal solid waste fly ash waste salt, belonging to the technical field of municipal solid waste fly ash treatment. Using the waste heavy liquid obtained from municipal solid waste fly ash after water-soluble treatment as raw material, calcium is removed to obtain decalcified brine; the decalcified brine is then added to caustic soda and soda ash for further deammoniation and refining to obtain magnesium hydroxide and calcium carbonate solids, ammonia gas, and deammoniation brine; the deammoniation brine is evaporated to obtain salt and potassium-rich mother liquor; the potassium-rich mother liquor is cooled to precipitate potassium chloride, and then mixed with slurry and reacted with added sodium sulfate and water to obtain potassium sulfate and potassium sulfate mother liquor; the potassium sulfate is dissolved in water to control the equilibrium separation of sodium sulfate and potassium sulfate to obtain potassium sulfate product and potassium sulfate mother liquor; the potassium sulfate mother liquor and potassium sulfate mother liquor are recycled to the calcium removal process; the salt is dissolved in water and ammonia is absorbed to obtain ammonia brine; the ammonia brine reacts with carbon dioxide to obtain sodium bicarbonate product and heavy alkali mother liquor; the heavy alkali mother liquor is recycled to the calcium removal process. This invention achieves waste salt reduction, harmlessness, and resource utilization.

The utility model relates to the technical field of compression devices, in particular to a quick compression device for municipal solid waste after sorting, which comprises a base, a compression box is fixedly mounted on the base through a support rod, a conveying pipe is arranged at the top of the compression box, and hydraulic cylinders are fixedly mounted on two sides of the compression box. Symmetrical pressing plates are arranged in the compression box, the ends of output shafts of the hydraulic cylinders are fixedly installed on the side edges of the pressing plates correspondingly, a cutting blade is fixedly installed on the top of the pressing plate on one side, a movable plate is slidably arranged in the middle of the bottom of the compression box, and electric push rods are fixedly installed on the two sides of the compression box. According to the device for rapidly compressing the sorted municipal solid waste, the waste can be rapidly and continuously compressed and discharged, the waste treatment efficiency is remarkably improved, and the device is simple in overall structure, convenient to operate and high in practicability.

This invention belongs to the field of solid waste recycling technology and discloses a method for co-processing municipal solid waste and zinc-containing solid waste in a cement clinker production line. The method includes the following steps: cement raw meal enters a cyclone preheater I-1 and undergoes multi-stage preheating before entering a decomposition furnace, then a rotary kiln for clinker calcination, yielding high-temperature flue gas and cement clinker; municipal solid waste, zinc-containing solids, and auxiliary materials enter a pelletizer to form pellets, which then enter the rotary kiln to generate zinc-containing flue gas; the zinc-containing flue gas and high-temperature flue gas merge and enter the decomposition furnace, then enter a cyclone preheater I-2, where heat is recovered and then the secondary zinc oxide is recovered in the large chamber of a bag filter dust collector; tertiary air enters a cyclone preheater V to preheat the raw meal before entering the small chamber of a bag filter dust collector, and the exhaust gas is introduced into a chimney by a fan for emission. This invention solves the problem of ineffective utilization of zinc-containing solid waste and municipal solid waste, and can simultaneously produce secondary zinc oxide and zinc calcined sand without changing the existing cement clinker production line's cement clinker production.

The invention relates to the technical field of gasification furnaces, in particular to a vertical rotary gasification furnace for household garbage treatment, which comprises a feeding cylinder, a sealing plate, a closing assembly and a suction assembly. The upper material cavity and the lower material cavity are formed through the two sealing assemblies, in the feeding process, at least one of the two material cavities is kept in the sealed state all the time, and therefore the two material cavities jointly form a transition material cavity used for achieving the sealing effect in the discharging operation process between the outside and the gasification furnace; secondly, harmful gas escaping into the two cavities in the feeding process is pumped out through the suction unit, in conclusion, the sealing effect of the interior of the gasification furnace during feeding operation is ensured, and the problems that the harmful gas in the gasification furnace escapes to pollute the operation environment and reduce economic benefits are avoided; and the material can uniformly enter the gasification furnace through the material uniformizing plate, so that the gasification efficiency is improved.

This utility model relates to the field of gasification technology for municipal solid waste that has undergone shallow carbonization and crushing, and particularly to a circulating fluidized bed gasification device. The device includes a pyrolysis gasification unit, a high-temperature gasification chamber, and a cyclone separator. The bottom of the pyrolysis gasification unit has a first gasifying agent inlet, and the side wall has a coarse particle material inlet and a second gasifying agent inlet. The upper part of the high-temperature gasification chamber is connected to the pyrolysis gasification unit to feed the first volatile matter generated by the pyrolysis of coarse particles in the pyrolysis gasification unit into the high-temperature gasification chamber. The bottom of the high-temperature gasification chamber has a first gasifying agent inlet and a second gasifying agent inlet, and the side wall has a fine particle material inlet. The upper part of the high-temperature gasification chamber is connected to the upper part of the cyclone separator to feed the second volatile matter generated by gasification in the high-temperature gasification chamber into the cyclone separator. The gasification device provided by this utility model can effectively reduce tar content, reduce fly ash content, maintain stable operation, and improve gasification intensity and syngas quality.

The invention provides a method and device for predicting the thermal weight loss characteristic of fuel, and the method comprises the steps: obtaining to-be-predicted fuel with known physical composition, and determining the mass ratio of organic urban solid waste single components in the fuel and a first standard thermal weight loss characteristic; obtaining a first element and a second standard thermal weight loss characteristic corresponding to the organic urban solid waste single component according to the element correspondence table; based on the mass ratio, the first standard thermal weight loss characteristic, the element and the second standard thermal weight loss characteristic of the organic urban solid waste single component, obtaining an element characterization coefficient and a total element characterization coefficient of the organic urban solid waste single component; and taking the primitive characterization coefficient, the total primitive characterization coefficient and the environmental condition as input, and predicting the thermal weight loss characteristic of the to-be-predicted fuel under the given environmental condition by using the thermal weight loss characteristic prediction model. According to the method and the device, homogeneous replacement of the fuel containing infinite single components is realized through the finite elements, and the method and the device can be suitable for the fuel mixed by the single components of any number and variety.

This invention relates to a method for promoting dechlorination and inhibiting calcium leaching from waste incineration fly ash, belonging to the field of municipal solid waste resource utilization technology. The method includes the following steps: 60-90% fly ash, 10-40% auxiliary materials, 0-5% additives, and 0-5% regulators are mixed evenly by mass percentage, then mixed with water at a solid-liquid ratio of 1:(2-3.5). The mixture is stirred hydrothermally at 120-200℃ and 0.5-1.5MPa for 1-5 hours. After cooling, solid-liquid separation is performed to obtain solid material and ash washing wastewater. This invention achieves complete leaching and separation of chloride salts in waste incineration fly ash. Simultaneously, the calcium in the fly ash reacts with the silicon and aluminum components in the auxiliary materials to form a calcium-silicon-aluminum mineral phase, thereby inhibiting the dissolution of calcium in the fly ash into the liquid phase and significantly reducing the treatment cost of fly ash desalination wastewater.

A leachate grabber device for municipal solid waste storage bins, through its structural design, allows the hydraulic grabber to grab waste and close shut when flipped to the grabbing position. The waste inside the hydraulic grabber enters the cavity formed by the combination of a ring seat, filter screen, and pressure plate through the material passage and inlet. Then, driven by a second hydraulic cylinder, the inlet is sealed by a movable cover. Driven by a first hydraulic cylinder, the pressure plate approaches the ring seat, and the filter screen deforms under compression, squeezing the waste in the cavity, causing it to be compressed, deformed, and dispersed. Combined with a flipping mechanism that controls the tilt angle and suspension of the filter cylinder, leachate is discharged from multiple angles, passing through the filter screen and a one-way valve into the storage chamber. The liquid level is then measured and the weight calculated. When the liquid level is full, a solenoid valve opens, discharging the waste to a designated collection location. This process is repeated, allowing the waste with further leachate separation to be sent to the incinerator, effectively preventing residual leachate from affecting incineration efficiency.

This utility model relates to the field of municipal solid waste treatment and discloses an automatic sorting and processing device for municipal solid waste. The device includes a housing with two rotating rods rotatably connected to the top interior of the housing. Multiple stirring blades for breaking up clumps of waste are fixedly connected to the outer walls of the rotating rods. The two rotating rods are connected by a transmission assembly to allow them to rotate in opposite directions. Magnetic suction components for separating metal objects from the waste are provided on both the left and right sides of the housing. A separation component for separating lightweight objects from the waste is provided on the bottom interior of the housing. A first collection box for collecting the remaining waste after separation is also provided on the bottom interior of the housing. This utility model prevents waste from clumping and affecting subsequent waste sorting, improving the practicality of the equipment, and prevents metal objects from sticking to the electromagnets and affecting subsequent magnetic suction, thus improving the sorting efficiency of the equipment.

The invention provides a fixed bed gasifier and method based on retorting gas internal circulation, and belongs to the technical field of solid waste resource utilization. The gasification furnace comprises a furnace body, and a drying layer, a dry distillation layer, a gasification layer, a combustion layer and a slag pool are formed in the furnace body from top to bottom. The improvement lies in that a retorting gas collecting and gas back-spraying system is arranged. After being collected and preheated in the junction area, the retorting gas is re-sprayed into the high-temperature area in the furnace through the back-spraying nozzles distributed at the lower part. The gas sprayed back to the gasification layer is cracked and reformed to generate hydrogen-rich synthesis gas; and the gas sprayed back to the combustion layer combusts to supplement heat for the process. And in-situ removal of tar is realized. And the lower part of the furnace body adopts a conical furnace bottom structure, so that residual carbon combustion and slag discharge are facilitated. The invention fundamentally solves the tar problem of the fixed bed gasifier, has the advantages of high carbon conversion rate, stable operation, wide raw material adaptability, good economical efficiency and the like, and is especially suitable for gasification treatment of high volatile materials such as municipal solid waste, mixed materials of garden waste and sludge and the like.