56 results about "Microwave pyrolysis" patented technology

The invention discloses a tetracycline hydrochloride-containing wastewater treatment method in the field of wastewater treatment, which comprises the following steps: introducing tetracycline hydrochloride-containing wastewater into a reactor, adding a multilevel structure iron and iron sulfide composite carbon material, and adjusting the system to a nearly neutral condition; then adding potassium peroxymonosulfate composite salt, starting a direct current system, and carrying out catalytic degradation reaction under specific current density; and finally recovering the catalyst through magnetic field separation. The preparation method comprises the following steps: grinding pyrite and hematite, ball-milling and mixing the ground pyrite and hematite with orange peel powder and sodium hydroxide, and carrying out microwave pyrolysis, acid washing and drying, hydrogen peroxide surface treatment and the like to obtain a final product. According to the method, efficient degradation of tetracycline hydrochloride under the neutral condition is achieved, the catalyst can be magnetically recycled, secondary pollution is avoided, and the method has the advantages of being low in cost, easy and convenient to operate, environmentally friendly and the like.

The invention discloses a device for preparing a molten carbon fertilizer through solid waste microwave pyrolysis and waste heat recovery, and belongs to the field of solid waste treatment and recycling. The device is composed of a pretreatment unit, a microwave pyrolysis unit, a gas-solid separation unit, a gas phase treatment unit, a solid phase treatment unit and a waste heat circulation unit, solid waste enters a microwave rotary kiln after being dried and crushed, a magnetron generates microwave anaerobic pyrolysis under photovoltaic power supply, and a high-temperature gas-solid product is generated; the cyclone separator is used for separating flue gas from solid carbon, the flue gas is condensed to obtain pyrolytic oil and gas, and waste heat of medium-temperature flue gas is recovered through the heat accumulating type heat exchanger for drying; cooling the solid carbon through a heat pipe heat exchanger, recovering waste heat and liquefying urea, and mixing the solid carbon and the urea in a stirring melting pool to prepare a molten carbon fertilizer; and the waste heat backflow fan sends the carbon waste heat back to the drying chamber. The system is driven by green electricity, gas and solid phase waste heat is recovered through double paths, solid waste efficient pyrolysis-product high value-energy self-circulation is achieved, and energy consumption and carbon emission are reduced.

The invention discloses a method for judging and optimizing a raw material ratio in microwave synergistic pyrolysis, and relates to the technical field of solid waste recycling and biomass energy utilization. In order to overcome the defect that in-depth research and engineering application of a microwave pyrolysis process are restricted in the prior art, the technical scheme provided by the invention comprises the following steps: preparing samples from oily sludge and palm kernel shells according to a preset mass ratio, and mixing to obtain a mixed raw material; establishing an inert atmosphere and forming a controlled reaction system; applying microwave heating and collecting a sample mass change curve and temperature change data; comparing the mass change curve with a theoretical curve formed by weighted stacking of a single raw material pyrolysis curve to obtain a difference result; judging the synergistic effect strength among the raw materials according to the difference result, and outputting a synergistic effect judgment result; and determining an optimal ratio based on a synergistic effect judgment result. The method is suitable for raw material ratio judgment and optimization work of solid waste and biomass under the microwave synergistic pyrolysis condition.

The invention discloses a boat pushing type continuous microwave pyrolysis and oxidation system which comprises a conveying mechanism and a plurality of boats conveyed along the conveying mechanism and further comprises a plurality of pushing mechanisms. Boats are transferred among the conveying mechanism, the first replacement cavity, the second air replacement cavity, the third air replacement cavity and the microwave pyrolyzing furnace assembly through a pushing mechanism, and the boats of the microwave pyrolyzing furnace assembly are conveyed to the fourth air replacement cavity through a chain conveying mechanism. Boats are transferred among the fifth air replacement cavity, the oxidation furnace mechanism and the cooling mechanism through a pushing mechanism, the boats of the cooling mechanism are conveyed to the sixth replacement cavity through a chain conveying mechanism, and the pushing mechanism is used for pushing the boats in the sixth replacement cavity into the conveying mechanism. The second air replacement chamber, the third air replacement chamber, the microwave pyrolyzing furnace assembly, the fourth air replacement chamber and the fifth air replacement chamber are each provided with a nitrogen supply pipe and an exhaust pipe. Compared with the prior art, the continuous pyrolysis and oxidation of materials can be realized.

The invention provides a sectional type plastic microwave continuous pyrolysis system and method capable of switching catalyst modules. The system comprises a continuous feeding section, a microwave pyrolysis section, a connecting section, a catalytic reaction section and a condensation separation section which are communicated in sequence. The catalytic reaction section is provided with at least two catalyst modules which are connected in parallel and a flow path switching device, and the flow path switching device can selectively guide pyrolysis airflow to one of the modules to work and isolate other modules at the same time. The method comprises the steps of pyrolysis, conveying, catalysis and condensation separation, and different catalyst modules can be switched on line by operating the flow path switching device. According to the invention, independent optimization of pyrolysis and catalysis temperature is realized through sectional design, and pollution of molten plastic to a catalyst is avoided; through a modular parallel switching technology, rapid on-line replacement of catalyst functions and flexible regulation and control of products are realized, and the operation flexibility, the continuous operation capability and the catalyst management efficiency of the device are remarkably improved.

The application discloses a nano zero-valent iron modified hemicellulose biochar composite material and a preparation method and application thereof. The preparation method comprises the following steps: mixing xylan raw materials and iron oxide, performing ball milling treatment, and then performing a carbothermic reduction process in a microwave pyrolysis device under a nitrogen protection atmosphere and a constant temperature condition, so as to obtain the nano zero-valent iron modified hemicellulose biochar material after cooling. The composite material is prepared by using the above preparation method. The composite material is applied to purification treatment of polluted wastewater containing chlorinated hydrocarbons. The composite material has low raw material cost, simple preparation method, can form stable structure pores, has good adsorption performance and catalytic activity, realizes molecular dispersion of zero-valent iron in a hemicellulose biochar matrix, and improves adsorption and reduction capacity of the composite material on chlorinated hydrocarbon pollutants.

The invention provides three-cavity synergistic microwave pyrolysis equipment based on waste heat recovery and a working method of the three-cavity synergistic microwave pyrolysis equipment, and belongs to the technical field of microwave heating. A drying cavity, a pyrolysis cavity and a cooling cavity which are longitudinally and vertically distributed are adopted in the equipment and communicate with one another through oppositely-opened closing plates driven by air cylinders, and a vertical flow type channel driven by gravity is formed; and the PLC and the touch display module realize dynamic balance of the material flow and the energy flow according to temperature data fed back by the thermocouples in the cavities. The equipment is integrated with a waste heat recovery module, biogas generated by pyrolysis is introduced into a drying cavity heat exchange pipe bundle through a circulating gas path pipe group for indirect heat exchange, then flows back to a circulating water cooling box again for further cooling, and finally enters a gas washing, drying and filtering barrel for gas washing, dehydration and multi-stage filtering, and it is ensured that pyrolysis gas reaches the standard and is discharged. Through three-cavity cooperation and efficient waste heat recovery, the material treatment efficiency and the energy utilization efficiency are improved, and the overall energy consumption of the system is reduced.

The application discloses a biomass double-moving-bed gasification hydrogen production system and method, and relates to the field of biomass hydrogen production technology. The system comprises a feeding unit for providing and continuously feeding pretreated large-size high-density biomass raw materials mixed with biochar containing alkali metal oxides and salts thereof; a microwave pyrolysis unit comprising a microwave heating cavity and a conveying screw, which is used for receiving the biomass raw materials from the feeding unit, and performing microwave pyrolysis on the biomass raw materials while the biomass raw materials are pushed and moved in the microwave heating cavity; the microwave heating cavity is provided with a washing gas channel for radial circumferential injection; a combustion gasification unit arranged at the lower part of the microwave pyrolysis unit and receiving gaseous volatile components and solid biochar from the microwave pyrolysis unit; the combustion gasification unit is provided with a throat combustion zone and a gasification zone. The application can effectively improve the biomass pyrolysis efficiency, enhance the lightness of pyrolysis products, reduce hydrogen loss caused by combustion, significantly improve the hydrogen production yield, improve the tar removal intensity of combustion gasification, and create better conditions for obtaining a final hydrogen product with higher quality.

The present application relates to a method for reducing catalyst consumption and energy consumption in the process of microwave pyrolysis of waste polymers by melt pretreatment, belonging to the technical field of microwave catalytic pyrolysis recycling. It is well known that the microwave absorption ability of polymers is poor, and when using efficient and clean microwave pyrolysis, a sufficient amount of catalyst with strong microwave absorption ability is needed to start the reaction. Usually, the mass ratio of catalyst to polymer is close to 1:1, or even higher. The present application proposes that after mixing the waste polymers with the catalyst, melt pretreatment is carried out to reduce the bulk volume of the polymers, so that the catalyst is more concentrated, thereby improving the response of the mixture to microwaves. At the same time, the catalyst consumption is reduced, and the time for microwave to start pyrolysis is also shortened. This melt pretreatment method can significantly reduce the catalyst consumption in the pyrolysis process while ensuring high microwave heating efficiency, and also indirectly increases the single processing capacity of pyrolysis, which has a significant industrialization prospect.

The invention discloses a rural biomass green resourceful treatment method based on a microwave pyrolysis technology, and belongs to the technical field of organic solid waste high-value utilization. According to the method, efficient conversion of rural biomass (straw, fruit tree branches and the like) is achieved through four core steps of pretreatment, microwave pyrolysis, product collection and cyclic utilization and intelligent regulation and control. In the pretreatment stage, the raw materials are crushed until the particle size is less than or equal to 500 microns, dried until the moisture is less than or equal to 15% and homogenized; microwave pyrolysis adopts a four-section reactor, preheating, pyrolysis catalytic cracking and cooling are sequentially completed in an inert atmosphere, and COO-rich flue gas is synchronously introduced to activate biochar; after the product is separated, the biochar is used for soil improvement or carbon sequestration, the bio-oil is used as a fuel or a chemical raw material, and the biogas is purified and then circulated back to the reactor to be combusted to supply energy. The method is high in heat efficiency, low in energy consumption and high in resource utilization rate.

The application discloses a kind of bauxite catalytic microwave-assisted pyrolysis of waste and old textile resourceization method, belong to microwave-assisted catalytic pyrolysis of waste and old textile processing field.The specific steps are as follows: after washing and dewatering treatment, waste and old textile is dried, granulation;After drying bauxite, grinding and sieving;Waste and old textile and bauxite particles after granulation are treated by microwave pyrolysis;Residual solid after pyrolysis is pyrolysis carbon;After collecting gas generated in the process of pyrolysis, condensation is obtained, and incondensable pyrolysis gas and liquid pyrolysis oil are obtained;The present application utilizes bauxite as catalyst and converts waste and old textile into valuable oil, gas and carbon, realizes the maximum absorption of bauxite and waste and old textile and resource utilization.The present application has low cost, simple operation, and pyrolysis product can meet some energy utilization, so that bauxite and waste and old textile are resourceized, harmless and reduced, achieve the goal of synergistic effect of pollution reduction and carbon reduction, produce good economic benefit, social benefit and environmental benefit.

The invention provides a metal-nitrogen-carbon material and a preparation method thereof, and relates to the technical field of functional composite material preparation. The preparation method comprises the following steps: providing a metal source, a nitrogen source, a carbon carrier and a polytetrafluoroethylene emulsion, dissolving the metal source and the nitrogen source in an alcohol solvent to obtain a metal-organic complex solution, adding the carbon carrier and the polytetrafluoroethylene emulsion into the metal-organic complex solution, and carrying out ball milling to obtain homogeneous composite slurry, the preparation method comprises the following steps: preparing a homogeneous-phase composite slurry, sequentially drying and grinding the homogeneous-phase composite slurry to obtain carbon-based composite precursor powder, and finally performing microwave pyrolysis on the carbon-based composite precursor powder under a vacuum condition at the temperature of 300-350 DEG C, the power of 500-700 W and the duration of 40-60 minutes to obtain the metal-nitrogen-carbon material. According to the method, the metal-nitrogen-carbon material can be prepared only through one-time medium-temperature microwave pyrolysis, and compared with the prior art, the technological process is greatly shortened, energy consumption is remarkably reduced, the single-batch yield is high, and the method is suitable for continuous large-scale production.

A method for catalyst-assisted microwave pyrolysis of waste plastics includes: crushing a piece of waste plastic into multiple plastic fragments; mixing the multiple plastic fragments uniformly with a catalyst substance and placing the mixed plastic fragments and catalyst substance into a microwave heating chamber; performing a microwave heating process to heat the multiple plastic fragments under an oxygen-free condition within the microwave heating chamber to form solid carbon materials and gaseous volatile substances; and transferring the solid carbon materials from the microwave heating chamber into a cooling container and directing the gaseous volatile substances from at least one gas outlet of the microwave heating chamber into a condensation pipeline to form a fuel oil in a collection container.

This invention discloses a waste circuit board processing system and method, belonging to the field of waste circuit boards. The waste circuit board processing system includes a crushing device, a dehydration device, a mixer, a microwave pyrolysis furnace, a heat exchanger, an absorption tower, an adsorption system, an incineration system, and a chimney, arranged sequentially along the processing direction. The desorption gas outlet of the adsorption system is connected to the incineration system via a pipeline, and the exhaust port of the adsorption system is connected to the chimney via a pipeline. The exhaust port of the incineration system is connected to both the chimney and the adsorption system via pipelines. This invention employs a microwave high-temperature pyrolysis + oxide absorption process to separate the circuit board metal from the substrate, effectively reducing the generation of gases such as dioxins.

The application provides a preparation method of a cowpea leafhopper repellent and application thereof, and belongs to the technical field of green prevention and control of agricultural pests. The preparation method is as follows: activated biochar obtained by microwave pyrolysis of straw powder and activated by phosphoric acid is mixed with intercalated montmorillonite-PVA compound obtained by intercalating aluminum ions into montmorillonite and modifying the intercalated montmorillonite with polyvinyl alcohol, and then the mixture is modified with KH-550 to obtain a supported controlled-release carrier; linalool, geraniol and methyl salicylate are loaded on the supported controlled-release carrier to prepare a core; trans-2-hexenal and trans-2-octenal are loaded on the core to prepare a core-shell structure microsphere; the core-shell structure microsphere is coated with poly-N-isopropyl acrylamide to prepare a multi-stage controlled-release microsphere; and the multi-stage controlled-release microsphere is used to prepare the cowpea leafhopper repellent for preventing and controlling cowpea leafhoppers. The application improves the loading capacity and adsorption stability of active components, and improves the compatibility with the wax layer of cowpea leaves. The preparation of the application shows fast effect and long persistence.

The present invention discloses a monolithic catalyst for alkylanthraquinone hydrogenation and a preparation method thereof, the monolithic catalyst comprises a carrier and an active component, the carrier is a rare earth metal doped porous silicon carbide ceramic material, the active component is a noble metal, the loading amount of the noble metal is 0.05-2.0% of the mass of the carrier, and the loading amount of the noble metal is 0.05-2.0% of the mass of the carrier. The loading amount of the noble metal is calculated according to the mass of the active metal. The rare earth doped porous silicon carbide ceramic is prepared by adopting a microwave pyrolysis-atmosphere induced reduction method, and then the monolithic catalyst for alkylanthraquinone hydrogenation is obtained by adopting an impregnation method, so that compared with an industrial anthraquinone hydrogenation fixed bed catalyst, bed pressure drop is hardly generated; and meanwhile, the catalyst has excellent hydrophobicity, relatively high compressive strength, high noble metal dispersity and high catalyst stability.

The present application belongs to the technical field of photovoltaic module recycling, and provides a method for preparing carbon nanotubes from decommissioned photovoltaic modules and carbon nanotubes. The method comprises: disassembling the decommissioned photovoltaic module to obtain a photovoltaic laminate; subjecting the photovoltaic laminate to microwave pyrolysis to produce pyrolysis gas; sequentially subjecting the pyrolysis gas to condensation and purification treatment to obtain raw material gas; and using the raw material gas as a carbon source gas to perform chemical vapor deposition reaction. The present application uses the non-condensed pyrolysis gas produced by microwave pyrolysis of the decommissioned photovoltaic module as a carbon source, and through microwave pyrolysis and pyrolysis gas regulation, the complex pyrolysis gas is used as a carbon source gas for chemical vapor deposition to prepare carbon nanotubes; through condensation and purification treatment, the pyrolysis gas is regulated and treated to improve the applicability of the pyrolysis gas as a carbon source, and carbon nanotubes with more obvious tubular structure characteristics can be obtained, which have good uniformity of morphology, good structural integrity, high purity and high graphitization degree, and reduce irregular deposition on the surface.

The invention discloses a chemical tail gas treatment process based on microwave cracking, belongs to the technical field of chemical tail gas treatment, and is used for solving the technical problem that the VOCs purification rate and the odor pollutant purification rate need to be further improved in a chemical tail gas microwave cracking process in the prior art. According to the invention, a three-section combined structure of microwave absorption multiphase foamed ceramic particles, oxygen storage perovskite honeycomb blocks and B-N-P co-doped porous carbon powder is adopted to construct a continuous reaction system from front-end cracking, middle-section atmosphere steady-state regulation and control to tail-end deep reforming; the materials of all the sections form gradient synergy in the aspects of energy absorption, redox balance and rereforming of residual components, so that a complete conversion path from coarse cracking to redistribution to fine polishing of pollutants is realized, and the synergy system can remarkably improve the stability, the deep treatment capacity and the adaptability to various complex tail gases in the whole purification process; therefore, an excellent comprehensive purification effect is achieved.

This invention provides a method and apparatus for preparing high-value combustible gas. The method includes: heating and dehydrating straw under negative pressure using an electromagnetic induction heating device to obtain primary char; extruding the primary char into rods and then pyrolyzing it in a microwave pyrolysis device to release pyrolysis gas and obtain secondary char; introducing the pyrolysis gas into an electromagnetic induction heating device for deep pyrolysis to convert it into combustible gas. This invention combines electromagnetic induction heating and microwave heating technologies, specifically comprising three stages: in the first stage, after negative pressure electromagnetic induction heating, the slightly carbonized straw is extruded into rods; in the second stage, the rod-shaped char is pyrolyzed using microwave technology; and finally, in the third stage, the generated pyrolysis gas is subjected to electromagnetic induction high-temperature deep pyrolysis, thereby improving the calorific value and cleanliness of the combustible gas while reducing tar formation, and obtaining high-quality combustible gas based on multi-stage refined control.

The present invention relates to the technical field of energy storage with solid-waste treatment. Provided is a peak shaving system coupling surplus energy consumption and solid-waste treatment. The system comprises: a solar concentration tower, wherein a heat absorber can supply heat to a gasifier, and the gasifier can pyrolyze solid waste into primary fuel gas, pyrolytic fuel oil and pyrolysis char; a gas storage tank is in communication with the gasifier and is configured to collect the primary fuel gas; a tar storage mechanism is in communication with the gasifier and is configured to store the pyrolytic fuel oil and the pyrolysis char; and a microwave pyrolysis apparatus is powered by a thermal power generation unit, and the microwave pyrolysis apparatus can pyrolyze the pyrolytic fuel oil and the pyrolysis char to form secondary fuel gas and collect the secondary fuel gas into the gas storage tank. By coupling solid waste treatment with the thermal power generation unit, during an off-peak period of electricity consumption, surplus electric energy of the thermal power generation unit is used for solid-waste treatment, allowing the thermal power generation unit to maintain operation at a sufficiently high load, and during a peak period of electricity consumption, the fuel gas generated from solid-waste treatment is used for power generation to reduce the load of the thermal power generation unit, thereby realizing a valley-filling and peak-shaving function.

The invention belongs to the field of new material preparation and electrochemical energy storage, and relates to a method for preparing a lithium manganate positive electrode material by utilizing microwave discharge to reinforce submicron zinc powder recovery and conversion of waste zinc-manganese batteries and application of the lithium manganate positive electrode material. On the basis of microwave dielectric loss characteristics of conductive carbon black and metal oxide in the waste zinc-manganese battery, local strong discharge is excited in a microwave field to form an instantaneous high-temperature plasma high-activity microcell rich in active particles, so that selective reduction separation of battery components is accelerated. Zinc oxide is reduced into submicron zinc powder, manganous-manganic oxide is reduced into manganic oxide, and the manganic oxide and the manganic oxide are enriched in the microwave pyrolysis slag; and mixing the pyrolysis slag with lithium carbonate, heating in pure oxygen, and sintering MnO and Li2CO3 in situ to obtain lithium manganate. By constructing a full-dry phase recovery reconstruction system, near-full-amount recovery of zinc and manganese metal components and high-value gain of products are realized under the condition of no acid-base reagent, zero-pollution emission is realized in the whole process, and a new atomic economical clean metallurgy scheme is provided for recycling of waste batteries.

The invention relates to a microwave pyrolysis device for waste wind power blades. The microwave pyrolysis device comprises a box body, a box cover, a crucible, a servo motor and a microwave generator, the box cover is hinged to the upper surface of the box body, a pyrolysis tank body is fixed in a pyrolysis notch formed in the upper surface of the box body, the bottom surface of the pyrolysis tank body is rotationally connected with a turntable, and the crucible is detachably connected with the turntable. The crucible is composed of a crucible body and a side baffle ring, a liquid leakage hole is formed in the side wall of the body, and the side baffle ring is sleeved on the periphery of the body. The servo motor is fixed on the box body and drives the turntable to rotate; the microwave generator is arranged on the box cover, and the output end is aligned with the crucible containing groove. The crucible is driven to rotate through the servo motor, pyrolyzed fibers and oil liquid are separated through centrifugal force, the oil liquid is discharged through the liquid leakage holes and intercepted through the side baffle ring to avoid bonding, the problem that traditional pyrolysis solid-liquid separation is incomplete is solved, the separation efficiency is improved, and cleaning is convenient.

The invention relates to the technical field of packing paper processing, and discloses a sewage treatment system in a process packing paper production process, which comprises an intelligent gradient separation pretreatment module, a bionic coupling biological catalytic reaction module, a closed-loop resource regeneration module and a digital twinborn cooperative control module, the intelligent gradient separation pretreatment module is used for removing high-fiber suspended matters and jelly in sewage through dynamic screening and intelligent flocculation; the bionic coupling biological catalytic reaction module is used for degrading chemical additive residues and organic matters difficult to decompose through a biological-electrochemical synergistic effect. Through dynamic screening and intelligent flocculation technologies of the intelligent gradient separation pretreatment module, combined with biological-electrochemical synergistic degradation of the bionic coupling biological catalytic reaction module and waste heat recovery and microwave pyrolysis of the closed-loop resource regeneration module, efficient removal of high-fiber suspended solids, refractory organic matters and chemical additives is realized, and the treatment efficiency is improved. The synergistic interaction of sewage treatment and resource regeneration is realized.

The invention provides a microwave pyrolysis recovery method for waste circuit boards, and relates to the technical field of waste recovery. The method provided by the invention comprises the following steps: stripping an electronic element on the waste circuit board, and crushing to obtain recycled powder; mixing the recycled powder with a microwave absorbent to obtain mixed powder; the mixed powder is subjected to microwave pyrolysis at the temperature of 400-600 DEG C, the microwave power of 600-800 W and the protective atmosphere, and then a metal enriched material is obtained through separation; and grinding the metal enriched material, and separating under the action of a leaching agent to obtain metal components. According to the method, the organic nonmetal components in the waste circuit board are subjected to pyrolysis separation by utilizing microwave pyrolysis, so that the metal components are quickly enriched, dust pollution is favorably reduced, and generation and emission of toxic pollutants are inhibited.

The invention relates to the technical field of agricultural waste resource utilization and functional materials, in particular to a nutrient slow-release carrier based on microwave pyrolysis of rice straw biochar and a preparation method and application of the nutrient slow-release carrier. The preparation method of the nutrient slow-release carrier based on microwave pyrolysis of the rice straw biochar comprises the following steps: pretreating rice straw so that the water content of the rice straw is less than or equal to 30% by mass; carrying out microwave pyrolysis on the pretreated rice straws; the power of the microwave pyrolysis is 1200 to 1400 W, the temperature is 300 to 600 DEG C, and the time is 45 to 60 minutes. According to the invention, the rice straw is successfully converted into the porous biochar with optimized specific surface area and pore size distribution through a microwave pyrolysis technology. The biochar is used as a nutrient slow-release carrier, so that the defect that the adsorption capacity is high but the release rate is too high in the prior art is remarkably overcome, and the adsorption and continuous release dynamic state of nutrients can be effectively regulated and controlled.

The utility model relates to the technical field of cracking equipment, and discloses continuous waste tire microwave cracking equipment which comprises a cracking box, the middle of the left end of the cracking box is communicated and fixedly connected with a feeding cylinder, and a spiral conveying rod is rotatably mounted in the feeding cylinder; the middle of the upper end of the spiral conveying rod communicates with and is fixedly provided with a feeding hopper, a rotating cylinder is rotationally installed in the middle of the interior of the feeding hopper, sealing concave plates are fixedly installed on the front inner wall and the rear inner wall of the feeding hopper correspondingly, a material groove is formed in the upper end of the rotating cylinder, the spiral conveying rod is designed to be hollow, and smoke holes are evenly distributed in the spiral conveying rod. Leakage-proof nets are arranged in the positions, inside the smoke holes, of the spiral conveying rod. According to the feeding device for the waste tires, continuous and stable feeding of the waste tires is achieved, efficient sealing in the feeding process is ensured through close fit between the sealing concave plate and the feeding barrel, and the product quality is improved by ingeniously utilizing high-temperature oil smoke generated in the cracking process.

The application provides a sludge microwave pyrolysis device, belonging to the technical field of sludge treatment, comprising a tunnel furnace and a conveying belt arranged in the tunnel furnace, and a supporting frame and a feeding hopper are arranged at the feeding end of the tunnel furnace; two hollow extrusion rollers are rotatably connected to the supporting frame, and the gap between the two extrusion rollers is located directly below the feeding hopper; the left extrusion roller is made of microporous material; a negative pressure suction pipe that can communicate with an external suction pump is arranged on the supporting frame, and the suction end of the negative pressure suction pipe is located in the left extrusion roller; a preheating assembly that can heat sludge is arranged in the right extrusion roller, and is used for assisting in removing water in the sludge; a driving assembly is arranged on the supporting frame, and is used for driving the two extrusion rollers to rotate and extruding the sludge; and the application can reduce the probability of the influence of the excessive water in the sludge on the microwave pyrolysis work.

The invention discloses a method for preparing combustible gas and co-producing charcoal through pyrolysis / gasification of traditional Chinese medicine residues, and belongs to the technical field of solid waste recycling and energy chemical industry. The method specifically comprises the following steps: carrying out drying treatment on wet basis traditional Chinese medicine residues, and carrying out crushing and screening to obtain traditional Chinese medicine residue powder; performing microwave pyrolysis / gasification reaction on the traditional Chinese medicine residue powder in an oxygen / nitrogen atmosphere; cooperative production of combustible gas yield, components and biochar physicochemical properties is achieved, a gas product obtained after reaction is condensed and collected, combustible gas and a liquid product are obtained, and a residual solid is biochar. According to the method, synergistic conversion and directional preparation of the traditional Chinese medicine residues to high-quality combustible gas and high-added-value biochar can be achieved, a sustainable steam energy source supplement and solid waste recycling solution is provided for pharmaceutical factories, meanwhile, the development of circular economy and the achievement of pollution and carbon reduction targets are effectively promoted, and remarkable economic, environmental and social benefits are achieved.

The invention discloses a silicon-carbon composite material and a preparation method and system thereof. The preparation method comprises the following steps: carrying out solid removal and distillation on petroleum heavy oil to obtain light distillate oil and heavy distillate oil; mixing the light distillate oil with the nano silicon, and adding a dispersing agent to obtain an oil solution of the nano silicon; mixing the heavy distillate oil with an oil solution of nano silicon to obtain mixed pyrolytic oil; carrying out microwave pyrolysis on the mixed pyrolytic oil to obtain pyrolytic carbon containing silicon; and carrying out gas-solid separation, crushing, carbonization and demagnetization on the silicon-containing pyrolytic carbon to obtain the silicon-carbon composite material. The silicon-carbon composite material provided by the invention can provide multi-angle and multi-channel embedding and separating paths of lithium ions, and has relatively high electrochemical performance.

The cotton straw microwave cracking reaction system provided by the application can adjust the output by increasing or decreasing the number of microwave cracking reactors, the height-diameter ratio of the straight section in the microwave reaction bin is designed to be 2.6-3.3, and the raw material distributor and the secondary distributor are arranged in the microwave reaction bin, so that the uniform distribution of the material is ensured and the high-temperature gas is prevented from taking the material; in addition, the metal shell is arranged outside the microwave reaction bin, so that the safety risk caused by the cracks or burst of the furnace body is avoided, the metal shell has a reflection weakening effect on the microwave, the microwave resonant cavity is completely closed by the metal shell top cover and the lower end sealing support ring, and the leakage amount of the microwave is further reduced; then, the microwave intensity controller is used to monitor and control the microwave intensity in the microwave resonant cavity, and the material level regulator is used to monitor and control the material level in the microwave reaction bin, so that the output microwave power and the feeding amount are matched, and the anti-sticking stirrer does not stop.