31results about How to "Improve carbonization efficiency" patented technology

The invention discloses a cold cementing negative carbon aggregate prepared by synergistically using steel slag and coal-based solid waste and a preparation method of the cold cementing negative carbon aggregate, and belongs to the technical field of solid waste resource utilization. The cold cementation negative carbon aggregate comprises steel slag, coal-based solid waste, an activating agent, a grinding aid and a pore-forming agent. The steel slag and the coal-based solid waste are effectively utilized, high energy consumption and high pollution caused by a traditional sintering mode are avoided, the purposes of energy conservation and environmental protection are achieved, and the cold-cemented negative carbon aggregate is light in weight, high in strength, simple in preparation process, suitable for industrial application and popularization, capable of serving as building light aggregate or building sand-gravel materials and suitable for popularization and application. The method has excellent environmental benefits, economic benefits and social benefits.

The invention belongs to but not limited to the technical field of electrode materials, and particularly relates to a preparation method of a bamboo-based hard carbon sodium battery negative electrode material, which comprises the following specific steps: S1, cleaning and drying natural bamboo, scraping surface bamboo green with a knife, and cutting into small blocks; s2, a dilute acid solution is prepared, the bamboos are soaked in the dilute acid solution in a vacuum mode, then the bamboos and the dilute acid solution are transferred into a hydrothermal kettle together, a solvothermal acidolysis reaction is conducted under the high-temperature and high-pressure condition, ash removal and impurity removal are conducted, and meanwhile the bamboos are softened; s3, the bamboo wood subjected to solvothermal acidolysis is washed with water and dried, and a tubular furnace is used for pre-carbonization treatment; after pre-carbonization, a sample is subjected to ball milling, grinding and screening, then is transferred into a graphite mold, and is put into a discharge plasma sintering furnace for high-temperature sintering carbonization; and S4, carrying out ultrasonic oscillation on the carbon powder subjected to discharge plasma treatment, re-screening, and carrying out chemical vapor deposition carbon coating to obtain the bamboo-based hard carbon sodium battery negative electrode material.

The invention discloses a modified asphalt-based hard carbon negative electrode material and a preparation method thereof, and belongs to the technical field of sodium ion batteries. The method comprises the following steps: performing crushing treatment on asphalt to obtain crushed asphalt, and performing pre-oxidation treatment in an air atmosphere to obtain oxidized asphalt; mixing and reacting a mixed gas composed of a carbon source gas and an organic gas with the oxidized asphalt by adopting a gas phase coating method to obtain a hard carbon precursor; and calcining and carbonizing the hard carbon precursor in an inert atmosphere, and cooling to obtain the modified asphalt-based hard carbon negative electrode material. According to the preparation method disclosed by the invention, the pitch is pre-oxidized and then is subjected to vapor deposition coating, and the amorphous carbon coated pitch-based hard carbon improves the pore structure of the surface, so that active sites, in contact with electrolyte, of the material surface are reduced, and the first coulombic efficiency and reversible capacity of the battery are effectively improved.

The utility model discloses a biomass material carbonization device which comprises a base, a carbonization furnace body is arranged on the base through a vertical frame, an inner furnace body is arranged in the carbonization furnace body, a first heating rod is arranged in the inner furnace body, a second heating rod is arranged on the inner bottom wall of the carbonization furnace body, a stirring shaft is rotationally arranged in the inner furnace body, and a material shifting plate is arranged at one end of the stirring shaft through a connecting rod. The inner furnace body is arranged in the middle of the carbonization furnace body, the first heating rod is arranged on the inner wall of the inner furnace body, the second heating rod is arranged on the inner bottom wall of the carbonization furnace body, materials are put into the carbonization furnace body, the motor and the gear set drive the stirring shaft and the stirring plate to rotate at a constant speed for adjustment, and the materials can be uniformly stirred; the first heating rod is used for primary carbonization, meanwhile, after being shifted by the shifting plate to move upwards by a certain height, materials fall to make contact with the outer wall of the carbonization furnace body for secondary carbonization, different faces of the materials can make contact with the carbonization heating wall of the furnace body conveniently for carbonization treatment, and therefore the material carbonization efficiency is improved.

A kind of pyrolysis carbonization reaction furnace based on waste plastics recovery of waste incinerator, the present application relates to a pyrolysis carbonization reaction furnace, the present application is to solve the problem that garbage carbonization furnace in prior art is more complex when using, needs to be heated to complete garbage carbonization, various gas-liquid solid substances generated during carbonization cannot be completely utilized, the energy consumption of carbonization furnace is higher in the process of carbonization, leading to cost increase, carbonization efficiency and quality low, the big end of conical cylinder is fixedly installed with air inlet end cover, the small end of circular cylinder is fixedly installed with transmission shaft connecting end cover, transmission shaft is arranged in heating bucket and is rotatably connected with transmission shaft connecting end cover by bearing, transmission shaft is connected with external driving motor, discharge box is equipped on heating bucket, receiving funnel is installed on the side wall on the top of heating bucket, exhaust pipe is arranged close to the small end side of heating bucket, exhaust pipe is installed on the side wall on the top of heating bucket and is communicated with heating bucket.The present application belongs to the technical field of carbonization furnace.

The novel sludge carbonization device comprises a heating furnace, a heated furnace, an outer gear ring, a motor, a gear and an outer gear ring, the heated furnace comprises a heated furnace body, a mounting partition plate and a heated differential furnace tube, a heated cavity is formed in the heated differential furnace tube, and the outer gear ring is sleeved on the heated furnace body. A connecting shaft and a differential gear are arranged at one end of each heated differential furnace tube, and an inner gear ring meshed with all the differential gears is arranged on the heating furnace; according to the utility model, the heated furnace is formed by uniformly distributing the plurality of heated differential furnace tubes, and the heated gaps are arranged between the adjacent heated differential furnace tubes, so that the tube walls of all the heated differential furnace tubes can be heated in high-temperature smoke, the heated furnace rotates and heats in the heating furnace, and meanwhile, the heated differential furnace tubes realize differential rotation relative to the rotation speed of the heating furnace; when the heated differential furnace tube passes through the lowest position for direct heating every time, the heating positions are different, so that the whole heated differential furnace tube is uniformly heated, and the carbonization efficiency is improved.

The invention discloses an organic waste sulfuric acid carbonization treatment device, and relates to the technical field of organic waste sulfuric acid carbonization treatment. Comprising a supporting seat, the supporting seat is fixedly connected with a reaction tank, the reaction tank is provided with a control panel, the side, close to the supporting seat, of the reaction tank is fixedly connected and communicated with a discharging part, and the side, close to the discharging part, of the reaction tank is provided with an electromagnetic valve electrically connected with the control panel. A cover plate is fixedly connected to the side, away from the discharging piece, of the reaction tank, the cover plate is fixedly connected with a feeding pipe communicated with the reaction tank, the cover plate is fixedly connected with a fixing frame, the fixing frame is provided with a motor electrically connected with the control panel, and a driving shaft of the motor is provided with a transmission shaft. In the process of carbonizing the organic waste sulfuric acid, the magnetic particles in the organic waste sulfuric acid are pretreated, so that the later-stage separation time is shortened, and the later-stage separation pressure is reduced.

The invention discloses a method for improving the carbonization performance of low-carbon clinker by utilizing ettringite. The method comprises the following steps: mixing low-carbon clinker, ettringite and water, and pressing and molding the mixture; drying the molded sample, and then carbonizing the mixture for 12-24 hours under the conditions of a CO2 concentration of 15-20%, a temperature of 50-70°C, a humidity of 50-80%, and an air pressure of 0.1-0.3MPa to obtain a carbonized clinker; and adding ettringite to the low-carbon clinker so that the ettringite is gradually carbonized under the CO2 condition and releases water to retain water, thereby providing partial carbonization strength and extending the effective carbonization time of the low-carbon clinker, thereby effectively improving the carbonization strength and carbon fixation rate of the low-carbon clinker, and the low-carbon clinker can be used in a carbonization environment with high temperature and low CO2 concentration in the tail gas of a cement industrial kiln.

The invention belongs to the technical field of wire materials, and provides a fireproof and waterproof modified tunnel lighting wire and a preparation method thereof. The preparation method comprises the following steps: mixing 4, 4 '-diaminodiphenyl ether with a small amount of octylamine to introduce a hydrophobic group on the structure of a diamine monomer so as to enhance the waterproof performance of a polymer, adding polymethyl methacrylate microspheres as a template material, uniformly dispersing the microspheres in a polyimide solution, and removing the microspheres after solvent treatment to form a micro-void structure, so as to obtain the polymer. The weight of the material is reduced, the heat dissipation effect is enhanced, meanwhile, the heat insulation performance is improved, the pterostilbene phosphate flame retardant and the modified flame retardant are added into the final composite material, and the flame retardants release phosphoric acid and inert gas during combustion to form a protection carbon layer for isolating a fire source and inhibit free radicals in the combustion process, so that the excellent flame retardant effect is achieved, and the service life of the composite material is prolonged. The low-smoke and non-toxic gas during combustion is ensured, and the low-smoke and halogen-free requirements are met.

The application provides an agricultural modular container type organic solid waste carbonization system, which comprises a container, an electromagnetic heating rotary carbonization furnace, a first annular pre-treatment box, a second annular pre-treatment box, a rotating screening mechanism, a tail gas treatment module and a remote controller.

The utility model relates to a carbonization system and a water purifying and drinking machine. The carbonization system comprises a refrigeration module which comprises a heat exchanger and a cold water tank, the heat exchanger is arranged at the bottom of the cold water tank, and an upper cover of the cold water tank is provided with a containing hole; the refrigeration module is used for cooling normal-temperature water in the cold water tank into cold water through the heat exchanger; the booster pump is located outside the cold water tank; a water inlet of the booster pump is connected with a water outlet of the cold water tank; a water outlet of the booster pump is connected with the first water inlet; the carbonization tank and the heat exchanger are coaxially arranged, and the carbonization tank is arranged in the cold water tank; one end, away from the upper cover, of the carbonization tank is positioned on an inner ring of the heat exchanger; a gas inlet of the carbonization tank is connected with a gas outlet of the carbon dioxide gas cylinder, and the carbonization tank receives cold water in the cold water tank through the booster pump and is used for mixing the cold water in the cold water tank with carbon dioxide gas to generate steam water. By adopting the carbonization system, the steam-water acquisition complexity can be reduced; the carbonization tank can be in a low-temperature state all the time, and the steam-water obtaining convenience and efficiency are improved.

The present invention discloses a carbon fiber material, a preparation method thereof and a lithium ion battery. The carbon fiber material comprises graphitized carbon fibers, the graphitized carbon fibers are overlapped to form a porous network structure, and the graphitized carbon fibers have micropores on their surface. The carbon fiber material of the present invention has a porous network structure, and there are many nanostructure gaps formed by the interlacing of carbon fibers between the carbon fibers, which is very beneficial for the diffusion of electrolytes and the deintercalation of lithium ions, and is beneficial for improving the specific surface area and lithium storage performance of the material. At the same time, the graphitized carbon fibers have better electrical conductivity than ordinary carbon fibers, and the micropores on the surface of the graphitized carbon fibers are beneficial for the storage of lithium adsorbed ions on the surface and edges of the carbon fibers, thereby increasing the capacity. The carbon fiber material of the present invention is applied to lithium ion batteries, which can significantly improve the performance of the batteries.

The present invention provides a continuous production line for producing activated carbon from coal by microwave carbonization and a control method thereof. The equipment includes a coal extrusion forming component for crushing and extruding coal blocks into coal briquettes of a set shape; a microwave heating component for microwave heating the coal briquettes to carbonize the coal briquettes; and an air treatment component for harmlessly treating the gas generated during the microwave heating of the coal briquettes and recovering the coal tar in the gas. The processing efficiency of the continuous production line for producing activated carbon from coal by microwave carbonization is improved, pollution is reduced, and the processing purpose of green and environmental protection is achieved.

The invention relates to the technical field of industrial solid waste resource utilization, and discloses an intelligent carbonization device and method for recovering CO2 and solid waste, the intelligent carbonization device comprises a tail gas treatment system, the tail gas treatment system comprises a gas-solid separation unit, a fly ash bin and a gas separation unit, the gas-solid separation unit is used for receiving power plant tail gas and separating the power plant tail gas into gas and solid, and the gas separation unit is used for separating the gas and the solid; the separated solid enters the fly ash bin, and the separated gas enters the gas separation unit; the multifunctional carbonization reaction kettle, the fly ash bin and the gas separation unit respectively convey CO, N and fly ash into the multifunctional carbonization reaction kettle, and the fly ash is subjected to carbonization modification in the multifunctional carbonization reaction kettle; and the intelligent regulation and control system is used for monitoring and regulating a plurality of parameters in the carbonization reaction process. The method is simple in process and high in intelligent degree, can be directly connected to a power plant tail gas system, effectively solves the problems of low activity of traditional fly ash, delayed carbonization process control and the like, and improves the carbonization efficiency and the product value.

The utility model discloses a small spray carbonization device for experiments, which relates to the technical field of spray carbonization equipment and comprises a carbonization tower, a pressure barrel, a gas mixer, a carbon dioxide storage tank and an air compressor. A carbonization gas inlet communicated with the gas mixer is formed in the side wall of the bottom of the carbonization tower, a material outlet is formed in the bottom of the carbonization tower, the inlet end of the pressure barrel and the inlet end of the gas mixer are respectively communicated with the air compressor, and the gas inlet end of the gas mixer is also communicated with the carbon dioxide storage tank. According to the utility model, the design is reasonable, the single-fluid pressure type nozzle is adopted for atomization, and meanwhile, the pneumatic pressure barrel is adopted for providing spraying pressure, so that the requirement that a centrifugal nozzle needs a large-diameter carbonization tower is avoided, and the miniaturization of equipment is realized. And meanwhile, the problem that the carbonization efficiency is seriously influenced due to the fact that a large amount of gas is mixed in a two-fluid nozzle is solved.

The utility model relates to the technical field of pyrolysis and carbonization devices, and discloses an electromagnetic induction heating waste tire pyrolysis and carbonization device which comprises a carbonization box body, a feeding barrel device is arranged at the front end of the carbonization box body, a pyrolysis and carbonization assembly communicated with the feeding barrel device is arranged in the carbonization box body, and the pyrolysis and carbonization assembly is arranged in the carbonization box body. The pyrolysis and carbonization assembly comprises a plurality of groups of heating rollers which are arranged in parallel, a cleaning ring is connected to an outer cylinder of each heating roller in a sliding manner, a pull rod sleeve assembly is arranged outside the carbonization box body, and the end, located in the carbonization box body, of the pull rod sleeve assembly is connected with the corresponding cleaning ring; according to the waste tire pyrolysis and carbonization device, efficient pyrolysis and carbonization are carried out on waste tires through the electromagnetic induction heating technology, meanwhile, a cleaning device and a pollutant treatment facility are arranged, it is ensured that the pyrolysis process is continuously and stably carried out, and pollution to the environment is reduced. Due to the design of the feeding cylinder device and the moving wheels, stable conveying of the waste tires and flexible movement of the device are guaranteed, and the whole device has the working characteristics of being efficient, clean and stable.

The utility model discloses an activated carbon coke recovery system which is provided with a drying mechanism, an activation mechanism and a waste gas treatment mechanism, the regeneration process of activated carbon coke is optimized, and structures such as an air blower, a heating box and a suction ventilator are combined for operation under intelligent control of a PLC, so that the activated carbon coke is cyclically dried by hot air, and the quality of the activated carbon coke is improved. Therefore, the energy consumption is reduced; in the activation and regeneration treatment process of the activated carbon coke, the heating base adopts a multi-stage heating mode for the dried activated carbon coke, the decomposition speed of organic matters is controlled according to the temperature gradient, and moderate heating treatment is carried out, so that the organic matters are respectively eliminated or converted from a matrix of the activated coke in the forms of volatilization, decomposition, carbonization and oxidation along with the temperature rise; and the water vapor oxidizing gas is combined as an activating agent, so that the residual carbide is gasified into gas, activated carbon coke micropores are cleaned, new micropores are generated and added, and the regeneration efficiency is improved.

The invention discloses a cement-based material with high chloride ion erosion resistance and a preparation method thereof.The cement-based material is composed of a leaf derived carbon material, mixing water and Portland cement, and the preparation method comprises the following steps that waxberry leaves serve as raw materials and are ground to obtain waxberry leaf powder, and the waxberry leaf powder and water are mixed according to the mass ratio to obtain a solid-liquid mixture; heating the solid-liquid mixture at 180-210 DEG C for 16-24 hours by adopting a hydrothermal method to obtain an initial product, and drying the initial product to obtain a black powdery leaf derived carbon material; uniformly mixing the leaf derived carbon material with Portland cement according to a mass ratio to obtain a blend; and mixing the blend with mixing water according to a mass ratio to obtain the cement-based material with high chloride ion erosion resistance. The cement-based material with high chloride ion erosion resistance is simple to prepare, low in cost and environment-friendly, and the chloride ion curing performance and chloride ion penetration resistance of the cement-based material can be remarkably improved.

The invention discloses biomass charcoal carbonization equipment, and belongs to the technical field of biomass carbonization processing, the biomass charcoal carbonization equipment comprises a body, one side of the body is provided with a feed inlet, a first sealing mechanism is arranged outside the feed inlet, the top in the body is provided with a first combustion chamber and a second combustion chamber, and the second combustion chamber is communicated with the first combustion chamber and the interior of the body; a first conveying mechanism is arranged at the bottoms of the first combustion chamber and the second combustion chamber, a second conveying mechanism is arranged at the bottom in the body and located below the second combustion chamber, and a discharging port is formed in the side, close to the second conveying mechanism, of the bottom in the body. Biomass raw materials to be processed are fed into the first combustion chamber from the feeding port, the biomass raw materials are preheated in the first combustion chamber, then the preheated biomass raw materials are conveyed into the second combustion chamber through the first conveying mechanism to be subjected to high-temperature carbonization, and the biomass raw materials are subjected to thermal decomposition reaction under the protective atmosphere of argon or nitrogen; and the carbonized biomass charcoal is conveyed to the outer side of the discharge port through the second conveying mechanism.

The utility model discloses a continuous feeding sludge carbonization device, which comprises a heating furnace, a heated furnace, an outer gear ring, a motor and a gear, the heated furnace comprises a heated furnace body, a front furnace door, a rear furnace door, a mounting partition plate, a heated differential furnace tube and a feeding furnace tube, one end of the feeding furnace tube is rotatably connected with a spiral feeder, and the other end of the feeding furnace tube is connected with a transition stock bin. Right guide arc-shaped sheets are uniformly distributed in the feeding furnace tube; one end of the heated differential furnace tube extends into the transition bin, the other end of the heated differential furnace tube is connected with a discharging bin, and left guide arc-shaped sheets are uniformly distributed in the heated differential furnace tube; according to the utility model, the feeding furnace tube and the heated differential furnace tube realize pug transportation in the rotating process by utilizing the material guide arc-shaped sheets on the inner walls of the feeding furnace tube and the heated differential furnace tube, so that the pug can be heated and carbonized in the heating furnace and can be automatically fed and transported, the continuous working time of the sludge carbonization device is prolonged, and the sludge carbonization efficiency is improved. And continuous heating carbonization can be realized without quenching the furnace, so that the carbonization efficiency is improved.

The invention relates to a negative electrode material with high energy storage and application of the negative electrode material in a solid-state battery, which comprises the following steps: preparation of electronic grade hydrochloric acid, preparation of SiCl4 (silicon tetrachloride), preparation of tetraethoxysilane (TEOS), preparation of carbon-coated SiO2 / C, preparation of a SiOx / C composite material, preparation of Si / SiOx / C and the like. The preparation method creatively combines a high-temperature oxidation process, a liquid-solid contact process, a dehydration stabilization process and other preparation methods. The carbon-coated SiO2 / C is adopted, so that the prepared Si / SiOx / C negative electrode material has good conductivity, the carbon-coated SiO2 / C layer is used as an elastic buffer layer to absorb and relieve stress caused by silicon volume change, and the structural integrity of the negative electrode material and the continuity of a conductive network are kept.

The utility model relates to the technical field of lithium carbonate carbonization, and provides a super mass transfer multiplier for lithium carbonate carbonization, which comprises a bottom plate, one end of the shunt pipe is fixedly arranged on the bottom plate; one end of the roller is rotationally and hermetically connected with the shunt pipe, and the other end is rotationally arranged on the bottom plate; a plurality of fan blades are fixedly arranged on the inner wall of the roller, and the fan blades are circumferentially arranged along the center of the roller; the driving part is fixedly arranged on the bottom plate and used for driving the roller to rotate. According to the technical scheme, the problems of how to improve the carbonization efficiency of lithium carbonate and how to shorten the carbonization reaction time in the prior art are solved.

The utility model relates to the technical field of sludge carbonization, and particularly discloses a sludge carbonization device with a dehydration pretreatment structure, which comprises a carbonization box, the carbonization box is of a cuboid structure with a hollow rear part, a carbonization cylinder is fixedly arranged in the carbonization box, the carbonization cylinder is of a hollow cylinder structure, and the dehydration pretreatment structure is arranged in the carbonization box. And a heating base is arranged on the lower surface of the carbonization barrel and fixedly installed on the inner wall of the carbonization box, a heating module is arranged in the heating base, and a discharging pipe is arranged on the lower edge of the carbonization barrel in a penetrating mode. According to the sludge carbonization device with the dehydration pretreatment structure, the carbonization barrel and the heating base are arranged in the device to realize the carbonization process of sludge, and before entering the carbonization barrel, the sludge firstly enters the dehydration barrel driven by the second motor to be subjected to centrifugal dehydration treatment, so that the moisture content in the sludge is reduced; the dewatered sludge enters the subsequent carbonization process, so that the sludge can be carbonized more efficiently, the carbonization time is shortened, and the carbonization efficiency is improved.

The invention discloses a straw recycling equipment, including a bottom plate, a grass crusher is fixedly connected to the upper end of the bottom plate, a combustion furnace is fixedly installed on the front of the bottom plate, a carbonization furnace is fixedly installed inside the combustion furnace, an incineration chamber is formed between the combustion furnace and the carbonization furnace, and a burner is fixedly connected to the upper end of the incineration furnace, and the burner extends into the interior of the incineration chamber. First, grass such as straw is collected by the grass crusher, and then crushed, and transported to the interior of the carbonization furnace by a first conveying cage, and the burner sprays fire to the interior of the incineration chamber. When the temperature of the carbonization furnace rises to 700-800 degrees Celsius, the crushed straw can be carbonized. When the burner is burning, the heat recovery pipe arranged at the upper end of the combustion furnace can transport the floating hot air into the interior of the grass crusher to preheat and dry the grass, so that the grass can enter the interior of the carbonization furnace for carbonization, thereby improving the efficiency of carbonization.

This utility model discloses a high-efficiency sludge carbonization furnace utilizing waste heat treatment, relating to the field of sludge carbonization furnace technology. The utility model includes a carbonization furnace: the furnace is equipped with a drive assembly, a transmission assembly, a rolling assembly, a dispersing assembly, a feeding assembly, and a discharging assembly. The utility model drives the transmission assembly installed at its output end to rotate by activating the drive assembly, which in turn drives the internally installed rolling assembly to rotate. The rolling assembly causes the sludge inside to move upwards, and as the sludge reaches its highest point inside the rolling assembly due to its own weight, it falls downwards. Simultaneously, the rotation of the rolling assembly causes the internally installed dispersing assembly to rotate, ensuring that the sludge falling downwards within the rolling assembly falls within the rotation range of the dispersing assembly. This allows the dispersing assembly to disperse the sludge, facilitating uniform heating and improving the carbonization efficiency of the sludge.

The utility model relates to the technical field of feeding structures for producing biomass hard carbon materials, in particular to a special feeding device for producing hard carbon cathode materials, which comprises a hopper, the hopper is conical, a feeding hole is formed in a top opening of the hopper, and a discharging hole is formed in a bottom opening of the hopper; a cover plate assembly is arranged at the feeding port, a bin door assembly is arranged at the discharging port, a material pressing plate capable of rotating and swinging is further arranged in the hopper, the material pressing plate rotates and swings along with work of the bin door assembly, the material pressing plate capable of rotating and swinging is arranged in the hopper, and when a bin door at the discharging port is opened every time by means of extrusion of the material pressing plate, the bin door at the discharging port is opened, the bin door is not prone to falling off. The biomass material in the hopper can quickly pass through the discharge port under the pressure of the material pressing plate to enter production equipment of the hard carbon negative electrode material to be processed, and after discharging is completed, the discharge port can be quickly sealed by the bin door again, so that loss of heat in the production equipment is avoided.

The carbonization treatment method of lithium ion battery negative electrode material of the present invention comprises the following steps: a. laying a heat insulation pad in a carbonization furnace; b. abutting one end of a first conductive graphite felt against the inner wall of a furnace head of the carbonization furnace and separating the other end from the inner wall of a furnace tail of the carbonization furnace; c. evenly placing graphite crucibles filled with a first negative electrode material at the same interval on the first conductive graphite felt, and filling a second negative electrode material between the graphite crucible and the side wall of the carbonization furnace; d. laying a second conductive graphite felt on the graphite crucible layer, abutting one end of the second conductive graphite felt against the inner wall of the furnace tail of the carbonization furnace and separating the other end from the inner wall of the furnace head of the carbonization furnace; e. laying a furnace roof on the second conductive graphite felt; f. supplying power to the carbonization furnace; g. monitoring the temperature field of the carbonization furnace; h. stopping power supply, dissipating heat and cooling; i. completing the carbonization treatment of the first negative electrode material, and collecting the second negative electrode material as the first negative electrode material for the next carbonization treatment.

This utility model relates to the field of sludge treatment technology, and more particularly to a sludge treatment device, including a cyclone dust collector. The cyclone dust collector is mounted on a platform via a vertical frame. A sealed screw conveyor is installed at the bottom of the cyclone dust collector. The discharge hopper of the sealed screw conveyor is connected to a carbonization furnace, and the inlet is connected to the discharge port of the cyclone dust collector. The carbonization furnace is horizontally mounted on the platform, forming an inclined angle of 1-3° with the horizontal plane. This utility model improves the dust collection efficiency of the cyclone dust collector by adding a sealed receiving hopper, avoiding the diffusion of fine particulate matter generated during sludge treatment, and reducing air pollution.

The utility model relates to the technical field of rapid carbonization devices, in particular to a rapid carbonization device based on electromagnetic induction temperature rise, which comprises an induction coil, a heating mold and an insulating shell, the induction coil is used for generating an alternating magnetic field; the heating mold is connected with the induction coil through an insulating support, and an inner cavity of the heating mold is of a hollow cylindrical structure and is used for containing a carbon material product; the insulation shell surrounds the induction coil and the heating mold and is used for insulation protection; wherein the induction coil is driven by a high-frequency power supply to generate an alternating magnetic field, the heating mold is directly inductively heated, and the heating mold radiates or conducts heat to the carbon material product through eddy current heating for directional heating. By adopting the electromagnetic induction heating technology, the carbon material product can be rapidly heated, so that the carbonization period is shortened, and the carbonization efficiency is improved.

The invention discloses a preparation method of a hard carbon material based on waste paper, which comprises the following steps: S1, crushing the waste paper, and cleaning obtained chippings with deionized water to remove a floating layer and oil stain; s2, soaking the cleaned material with a manganese chloride solution, and washing and drying the soaked material; s3, the dried material is subjected to pre-carbonization treatment, and the pre-carbonized material is smashed and screened; s4, carrying out acid pickling on the material obtained in the S3, and after acid pickling, drying, crushing and screening again; and S5, performing high-temperature carbonization on the screened material again to finally obtain the hard carbon material. The precursor of the final product is the waste paper, the basic unit of the material is the papermaking fiber, the material obtained by carbonizing the fiber has good morphology control, and the sodium ion battery made of the obtained hard carbon material has high gram volume and good multiplying power and cycle performance. High-value utilization of wastes is realized, and high economic value is created while the environment is protected.