68results about "Rotary retorts" patented technology

The invention relates to the technical field of carbonization devices, in particular to a self-deoxidation internal heat rotary type large-scale carbonization device which comprises a rotary furnace and a machine table for supporting the rotary furnace, and further comprises a heating device and a deoxidation device which are connected to the outer side of the rotary furnace, a feeding cylinder is fixed to one end of the rotary furnace in a penetrating mode, and a rotating shaft is rotationally connected to the inner side of the feeding cylinder in a penetrating mode. A first motor drives a rotating shaft to rotate, so that a cam in an opening and closing mechanism is driven to rotate, the cam drives two push rods to slide, so that two sliding rods can be pushed to move, the sliding rods drive sliding groove plates at the ends to move back and forth, and therefore the two knife rests and the two cutting knives at the same position can be driven to be combined or separated; the carbonized part on the surface of the large-size carbon-containing raw material can be cut off in time through the opening and closing of the cutting knives, the non-carbonized carbon-containing raw material is kept in a high-temperature environment, the outer layer part of the carbon-containing raw material can be prevented from being overburnt, and the carbonization uniformity can be improved.

The embodiment of the invention provides an agricultural and forestry waste biomass gas-carbon co-production device, and relates to the technical field of biomass energy development. The agricultural and forestry waste biomass gas-carbon co-production device comprises a bearing base, the top of the bearing base is fixedly connected with a feeding box, the top of the bearing base is fixedly connected with a discharging box, and the top of the bearing base is provided with a carbonization mechanism. And the connecting part synchronously drives the connecting part to pull the extrusion plug, so that the extrusion plug moves inwards in the gas collecting box, gas in the gas collecting box is compressed, the compressed gas is conveyed to the spray head pipe through the exhaust pipe, the spray head pipe sprays gas to the surface of the heat-resistant filter plate in a directional mode, and high-speed airflow impacts the surface of the heat-resistant filter plate. And attached fine dust particles can be further removed, the mechanical vibration ash removal effect is enhanced, the sprayed gas can locally cool the heat-resistant filter plate in a high-temperature state, and the heat-resistant filter plate is prevented from deforming or losing efficacy due to long-time high-temperature operation.

A system for processing solid waste including a segmented gasifier having a first segment detachably connected to a second segment, and a burner positioned downstream of the segmented gasifier and coupled to the segmented gasifier. A process for treating solid waste including introducing the solid waste into a first end of a segmented gasifier having a first segment detachably connected to a second segment. Gasifying the solid waste as it traverses from the first end of the gasifier to a second end of the segmented gasifier, and producing a gaseous output and a solid output at the second end of the segmented gasifier. Separating the gaseous output and the solid output, and introducing a portion of the gaseous output to a burner and recycling a portion of the gaseous output to the segmented gasifier as an energy source.

The invention relates to an in-situ and ex-situ catalytic pyrolysis device with a movable heating area and a pyrolysis method. The in-situ and ex-situ catalytic pyrolysis device comprises a rack; the reaction tube is axially and horizontally arranged on the rack; the left end of the reaction tube is communicated with a nitrogen cylinder through a rotary joint, a flow meter and a pressure reducing valve; the first end of the three-way pipe is connected with the right end of the reaction pipe through a rotary joint, the second end of the three-way pipe is connected in series with the first condenser and the first gas storage bag through a first stop valve, and the third end of the three-way pipe is connected in series with the second condenser and the second gas storage bag through a second stop valve; the tubular heating furnace is horizontally arranged on the rack in a sliding manner along the axial direction of the reaction tube, and a first heating area and a second heating area which are different in temperature are arranged in the tubular heating furnace; according to the device, on the basis that the in-situ catalytic reaction and the ex-situ catalytic reaction are carried out in the same device, the influence of the heating rate on the rapid pyrolysis of the raw materials is avoided, the full contact between different raw materials in the co-pyrolysis process and the maximum production of target products are ensured, and a catalyst evaluation function is also considered.

The invention discloses an internal structure of a straw shallow carbonization furnace, and relates to the field of carbonization furnaces, the internal structure comprises a carbonization assembly, one side of the carbonization assembly is provided with a transportation assembly, the upper end of the transportation assembly is provided with a pretreatment assembly, and the pretreatment assembly, the transportation assembly and the carbonization assembly are communicated with one another; the pretreatment assembly is fixedly connected to the upper portion of the conveying assembly, a through opening is formed in the top of the pretreatment assembly, a discharging hopper is arranged at the bottom of the pretreatment assembly, a feeding hopper is arranged at the top of the conveying assembly and matched with the discharging hopper, a heat dissipation chamber is arranged on the outer side of the pretreatment assembly, and a third motor is fixedly connected to the interior of the heat dissipation chamber. The output end of the third motor is fixedly connected with two groups of first gears, so that the subsequent carbonization reaction of the straws is more uniform; the size of straw is reduced, and the space utilization rate of transportation and storage is increased; the double-roller type crushing rollers meet the requirement of pretreatment granularity before straw shallow carbonization in a double-roller extruding and shearing mode.

The invention provides a system, which enables the uninterrupted single-step production of high quality activated carbon from apricot kernel shells, olive pits, almond kernels and shells, walnut shells, peach kernels and shells, hazelnut shells, pistachio shells, sour cherry pits, cherry pits, date pits or olive pomace, etc, and which can also produce more energy compared to the energy it consumes through energy recovery, does not harm the environment and nature as it performs the carbonization process in a controlled manner and provides negative carbon emission.

The present disclosure provides systems and methods for efficiently converting whole tires into various commodity products, such as crude oil (e.g., West Texas Intermediate crude oil) and carbon that can be used in industrial processes such as steel manufacturing or further processed (e.g., activated) to form activated carbon.

The utility model relates to the technical field of rotary kiln carbonization furnaces, and discloses an external heating rotary kiln carbonization furnace, which is characterized in that the output end of a servo motor is fixedly connected with a driving gear, movable rollers are arranged around the top of a base, the upper sides of the movable rollers are rotatably connected with heat preservation cylinders, the middle sides of the surfaces of the heat preservation cylinders are fixedly connected with gear rings, and the gear rings are fixedly connected with the driving gear. A vacuum cavity is formed in the inner wall of the heat preservation barrel, a carbonization furnace body is arranged in the heat preservation barrel, an electric heating pipe is arranged on the surface of the carbonization furnace body, the left side of the carbonization furnace body is fixedly communicated with a feeding pipe, and the right side of the carbonization furnace body is fixedly communicated with a discharging pipe. The carbonization furnace body is completely wrapped by the heat preservation barrel, the heat insulation property of the heat preservation barrel is enhanced through the vacuum cavity in the inner wall of the heat preservation barrel, heat loss of the carbonization furnace body can be effectively avoided, the heat utilization rate of the carbonization furnace body is increased, electric energy loss is reduced, the heating efficiency is improved, and use is convenient.

The invention provides an agricultural modular container type organic solid waste carbonization system which comprises a container and an electromagnetic heating rotary carbonization furnace, and the electromagnetic heating rotary carbonization furnace is obliquely mounted in the container; the first annular heat preservation cover and the second annular heat preservation cover are arranged on the peripheries of the low-temperature section and the high-temperature section in a sleeving mode correspondingly; the first annular pretreatment box and the second annular pretreatment box are arranged in the first annular heat preservation cover and the second annular heat preservation cover respectively; and the rotary screening mechanism is used for synchronously driving the first annular pretreatment box and the second annular pretreatment box to rotate and swing front and back, and a tail gas treatment module and a remote controller are further integrally installed in the container. The system adopts a container type integration form, is short in construction period, low in cost, suitable for solid waste treatment scenes such as rural islands and the like, capable of combining drying, crushing and screening processes with a carbonization process, high in integration degree and capable of supporting remote parameter regulation and control of the Internet of Things.

A system is provided that enables a continuous process that involves the introduction of particles into a reactor drum having a low oxygen environment. Heavy hydrocarbons are boiled off of the particles during the heating of the particles. The boiled off heavy hydrocarbons mix with a heated gas stream that heats the particles within the reactor drum. The heated gas stream (with the boiled off heavy hydrocarbons) exit the drum and are recirculated back to a heat source for reheating the gas stream prior to reentering the reactor drum. Repeated exposure to the elevated temperatures within the reactor drum cracks the heavy hydrocarbons into lighter hydrocarbons. The lighter hydrocarbons may then be separated out of the heated gas stream and collected for sale or use.

A method of processing biomass is disclosed. The method includes providing biomass to a pyrolysis kiln, where the biomass has a moisture content of less than 40% and an ash content of less than 50%, and where the biomass has a biomass input temperature of less than 125°C. The method continues with heating at least an upstream portion of the pyrolysis kiln to maintain an upstream kiln temperature of between 800°C and 1250°C, and feeding the biomass through the pyrolysis kiln for a pyrolysis duration of 5 to 60 minutes to produce a kiln output that includes biocarbon and syngas. The biomass increases from the biomass input temperature to a biomass reaction temperature of at least 800°C in less than 25% of the pyrolysis duration. The method continues with discharging at least the biocarbon and the syngas from the pyrolysis kiln. Other methods and pyrolysis kilns are also disclosed.

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.

A continuous pyrolysis system including a pyrolysis chamber, a heating chamber, a feeding chamber having a pressure input, an output coupled to the pyrolysis chamber, and a feeding opening opened to ambient atmosphere, a flame injector injecting ambient air and combustible material into the heating chamber, a pumping device with an input coupled to the heating chamber, and an output coupled to the pressure input of the feeding chamber, a O2 sensor within the heating chamber, and / or a pressure transducer within the feeding chamber, and a controller coupled to the O2 sensor, the pressure transducer, the flame injector, and the pumping device, for controlling the flame injector to inject ambient air and / or combustible material to maintain within the heating chamber O2 concentration between 8% and 10%, and / or for controlling the pumping device to maintain pressure in the feeding chamber above ambient pressure.

The utility model relates to the technical field of pyrolysis carbonization's rotary furnace tube, disclose a kind of pyrolysis carbonization's rotary furnace tube of high efficiency, including rotary furnace tube, both ends in the rotary furnace tube are provided with three spiral structure, heat conduction groove is provided in the rotary furnace tube, one end of the rotary furnace tube is provided with spiral guide plate, the one end of spiral guide plate away from rotary furnace tube is connected with barrel three, the utility model reduces internal temperature difference, can effectively increase internal pyrolysis temperature, the arc design of heat conduction groove, can effectively replace material lifting plate, and reduce the raising of dust, the design of multiple heat conduction grooves, can effectively increase the strength of rotary furnace tube, prolong service life, avoid material return to smoke collection cover simultaneously.

The invention belongs to the technical field of agricultural and forestry waste recycling, and particularly relates to an agricultural and forestry organic waste incineration and carbonization integrated device which comprises a moving seat, a carbonization furnace is arranged at the top end of the moving seat, a carbonization pipe is rotationally connected into the carbonization furnace, a feeding pipe is fixed to the end, close to a picking machine, of the carbonization furnace, and a material distribution plate is arranged in the feeding pipe. A material distributing pipe is fixed to one side of the material distributing plate, a first screw rod is rotatably connected to the interior of the feeding pipe, the other end of the first screw rod is inserted into the carbonization pipe, and a second screw rod is rotatably connected to the interior of the material distributing pipe; a groove body is formed in the bottom end in the carbonization furnace, a pair of combustion plates are arranged in the groove body, and vent holes are formed in the top ends of the combustion plates; the picking machine is directly communicated with the carbonization furnace, so that the carbonization furnace can directly perform carbonization operation in a farmland, the carbonized raw materials are directly discharged to the farmland, an intermediate feeding link is not needed, and 20% of the raw materials can be used as fuel through material distribution of the material distribution plate, so that the fuel is saved.

The invention relates to providing a pyrolysis process for producing pyrolysis coke from organic material, which process functions continuously and is scalable. The pyrolysis takes place in a rotary kiln (2) by direct contact with a hot gas as the thermal transfer medium without the addition of an agent for partial oxidation, wherein the hot gas is generated in a combustion chamber (6) by combusting pyrolysis gas, wherein the combustion air is preheated in an air preheater (10) in order to ensure ignition. In the process, the hot gas is generated as a thermal transfer medium in a combustion chamber (6) by partially combusting a partial amount of the pyrolysis gas with a controllable amount of preheated air; is added to the rotary kiln at the coke discharge; and is conveyed through the rotary kiln counter to the flow of the material to be pyrolysed, the feedstock (1). The partial flow of pyrolysis gas to be partially combusted is removed from the overall flow immediately after the pyrolysis, that is to say after charging (3) the feedstock, and is conveyed by means of a conveyor element (5), steam ejector or mechanical fan to the combustion chamber (6). The air is pre-heated advantageously by the exhaust gas of the remainder of the pyrolysis gas to be combusted in the combustion chamber (7) in the flue-gas air pre-heater (10). The feedstock to be pyrolysed can be, but does not have to be, pre-dried.

The invention belongs to the technical field of oil-based rock debris resource utilization, and provides an oil-based rock debris dry residue treatment system which comprises a rack, a first cylinder, a second cylinder, a driving mechanism, a mounting cylinder, a first motor, a first rotating shaft and a crushing rod. The first cylinder is arranged on the rack in a mode of rotating around the axis of the first cylinder, the second cylinder is arranged on the rack in a mode of rotating around the axis of the second cylinder, the installation cylinder is fixedly installed on the rack, and the two ends of the installation cylinder are in dynamic sealing connection with the end of the first cylinder and the end of the second cylinder respectively. And one end of the crushing rod is connected with the end, away from the first motor, of the first rotating shaft. According to the dry slag crushing device disclosed by the invention, the sliding dry slag is scattered through the rotating crushing rod, so that the dry slag is uniformly dispersed after falling, the subsequent dry slag heating is more uniform, the coking amount is reduced, and the dry slag processing quality is improved.

The utility model discloses sauced wine cellar bottom water crystallization residue carbonization equipment, which relates to the technical field of cellar bottom water treatment, and comprises a carbonization workbench and a carbonization furnace body, the inner wall of the carbonization furnace body is fixedly connected with a mixing fin plate, and the top of the carbonization workbench is provided with a convenient carbonization mechanism. A sufficient combustion mechanism is arranged at the top of the carbonization workbench, the sufficient combustion mechanism comprises a hollow batten, the hollow batten is fixedly installed at the top of the carbonization workbench, air outlet pipe openings are fixedly connected to the front face and the back face of the hollow batten, and flow guide plates are fixedly installed on the front face and the back face of the hollow batten. Through the design of the cylindrical fan, air can be absorbed from the end part of the air inlet hose, the air is filtered by the air filter cylinder, and then the air is output from the air outlet pipe orifice and guided to the top of the gas nozzle through the flow guide of the flow guide plate, so that the oxygen content at the top of the gas nozzle is increased; and therefore, the fuel gas combustion sufficiency is improved.

A system for continuous pyrolysis comprises a pyrolysis chamber comprising a first input opening, and at least one first output opening; a nitrogen source comprising a second input opening, and a second output opening; a feeding chamber comprising a third feeding opening, opened to ambient atmosphere and arranged to receive grinded material, a third pressure opening coupled to the second output opening of the nitrogen source, and a third output opening coupled to the first input opening of the pyrolysis chamber; and an inductor coupled to a power supply, wherein the pyrolysis chamber comprises a vertically rotating agitator comprising material that absorbs radiation emitted by the inductor to produce heat and distribute the heat among the grinded material distributed within the pyrolysis chamber. A method of continuous pyrolysis uses a corresponding system.

The invention relates to a passive discharging device and method for a low-rank coal pyrolysis rotary kiln. The passive discharging device is installed at the tail of the rotary kiln. Comprising an end plate, an L-shaped material lifting plate, a material guiding cone, an air guiding pipe, a spiral discharging barrel and a discharging outer barrel. According to the passive discharging device, gas-phase and solid-phase products in the rotary kiln can be guided out through the corresponding channels, on the basis of guaranteeing smooth discharging of upgraded coal, the flow speed of raw gas is reduced, and then the dust content in the raw gas is reduced; solid-phase products are lifted through the L-shaped lifting plate at the tail of the rotary kiln and enter the spiral discharging pipe through the distributing cone to be discharged, and operation is reliable.

The utility model relates to the technical field of decomposition and distillation of carbon-containing materials, in particular to a cotton stalk electromagnetic heating rapid carbonization device which comprises a furnace body used for heating cotton stalks, the furnace body is provided with a material opening, a transmission mechanism is arranged at the end, away from the material opening, of the furnace body, and an electromagnetic heating ring is arranged on the periphery of the furnace body. The furnace body is rotationally arranged in the electromagnetic heating ring through a transmission mechanism, a rotating shaft is arranged in the furnace body, spiral blades for feeding and discharging from the material opening are welded to the periphery of the rotating shaft, the transmission mechanism comprises a fixed gear, a transmission gear and a motor, the transmission gear is fixedly connected with an output shaft of the motor, and the fixed gear is fixedly arranged at the end, away from the material opening, of the furnace body; and the fixed gear is meshed with the transmission gear. According to the rapid cotton stalk carbonization device, heat is provided for pyrolysis through the electromagnetic heating ring, induction heat is generated between the furnace body and the electromagnetic coil arranged outside the furnace body in the rotating process of the furnace body, temperature rise is rapid, heating is uniform, and cotton stalks are rapidly carbonized.

The invention discloses a charcoal preparation device based on charcoal-gas co-production, and belongs to the technical field of charcoal preparation, the charcoal preparation device comprises a pyrolyzing furnace for providing heat for biomass waste, a charging barrel is fixedly mounted in the pyrolyzing furnace in a penetrating manner, sealing doors are rotatably mounted at the front and rear ports of the charging barrel, and a flue gas treatment channel is fixedly mounted between the charging barrel and the pyrolyzing furnace; an exhaust pipe is connected above the flue gas treatment channel in a penetrating manner; a rotating ring is rotatably mounted in the charging barrel, a guide column is fixedly connected beside the rotating ring, the guide column is slidably sleeved with a positioning ring, arc plates are fixedly mounted at the upper end and the lower end of the positioning ring, two groups of net plates are arranged between the upper arc plate and the lower arc plate, and the net plates are fixedly mounted on the positioning ring; the biomass waste in the charging barrel is rotated and shaken, so that the biomass waste in the center position of the charging barrel and the biomass waste at the edge position of the barrel wall move alternately, the biomass waste can fully absorb heat for pyrolysis processing, and the efficiency of preparing the biochar is improved.

The invention discloses a conveying device with an intelligent cooling function, and relates to the technical field of conveying devices. Comprising a control box, a first conveying cylinder, a second conveying cylinder, a driving assembly and a temperature control assembly, the control box is electrically connected with the driving assembly, and the first conveying cylinder and the second conveying cylinder are sleeved with each other and installed on the driving assembly; the discharging end of the first conveying cylinder is located in the second conveying cylinder, and the feeding end of the first conveying cylinder and the discharging end of the second conveying cylinder are located on the same side. The temperature control assembly comprises a temperature control cylinder and a heating part, the heating part is installed on the temperature control cylinder, the temperature control cylinder is inserted in the first conveying cylinder and the second conveying cylinder in a penetrating mode, the first conveying cylinder and the second conveying cylinder are driven to rotate through cooperation of the driving assembly, materials are conveyed in a U-shaped track, the required conveying length of the carbonization furnace is reduced, and the carbonization efficiency is improved. Heat loss is reduced, and heat utilization rate is improved.

This invention discloses a biomass pyrolysis reactor, comprising a feeding pipe, an inner reactor, and an outer reactor. The feeding pipe has a feed funnel at its front end. The feeding pipe, inner reactor, and outer reactor are mounted on the same mounting plate, with the rear end of the feeding pipe attached to the front end of the inner reactor. The rear half of the inner reactor is located inside the outer reactor. This design utilizes a first and second magnetic block to drive the outer and inner rings to rotate simultaneously during the rotation of the spiral conveyor blades. Simultaneously, a moving block repeatedly moves back and forth. Under the transmission of the first and second gears, the inner reactor can rotate repeatedly in both directions, thereby changing the direction of the centrifugal force on the hard, blocky biomass. This prevents the hard, blocky biomass from clogging the discharge port, improving the pyrolysis efficiency of the biomass.

This utility model discloses a vehicle-mounted carbonization device for processing biomass waste. The vehicle-mounted carbonization device includes a vehicle-mounted bracket, a carbonization unit, and a recovery unit. In the carbonization unit, the carbonization chamber is located inside a heat-conducting shell, which is installed inside an insulated box. The top surface of the carbonization chamber is open, and the rear is a door; at least half of the chamber can be removed from the rear side from the heat-conducting shell and the insulated box. The gap between the heat-conducting shell and the inner wall of the bottom of the insulated box serves as a combustion chamber, and the gap between the heat-conducting shell and other sides of the insulated box serves as a flue gas passage. The recovery unit is used to separate the effluent from the carbonization chamber, collect the produced liquid components, and send the produced fuel gas into the combustion chamber. The above-mentioned vehicle-mounted carbonization device can perform intermittent carbonization of various types of biomass waste and is easy to operate.

The utility model discloses a long flame coal carbonization rotary furnace feed bin, which comprises a feed bin and is used for supplying long flame coal to a rotary furnace, and the feed bin comprises a main body assembly which comprises a feed bin fixed at the bottom of a hopper, a stirring shaft vertically arranged in the feed bin and a spiral blade fixed on the outer wall of the stirring shaft and is used for longitudinally conveying the entered long flame coal; the anti-blocking assembly is arranged in the stock bin, is used for vibrating and blocking prevention of the long flame coal in the conveying process and comprises vibrating plates hinged to the inner walls of the left end and the right end of the stock bin; the dredging assembly is arranged in the main body assembly, is used for cooperatively dredging and preventing blockage, and comprises an inner cylinder fixed on the outer wall of the lower end of the stirring shaft, a raised grain groove formed in the outer wall of the inner cylinder, and an outer cylinder mounted on the inner cylinder in a sleeving manner; the vane plate reciprocates up and down in a small range, so that the long flame coal can be more effectively guided to be conveyed, the feeding delay or interruption caused by accumulation or unsmooth flow of the long flame coal in the stock bin is reduced, and the continuity and the stability of a production line are favorably improved.

The present invention discloses a control method, system, device, and storage medium for a drying and pyrolysis integrated furnace. The method includes obtaining a stirring torque parameter, a pyrolysis gas moisture content parameter, and a kiln weight parameter; utilizing a thermal engineering database, the stirring torque parameter, the pyrolysis gas moisture content parameter, and the kiln weight parameter are compared to adjust the feed rate, heat load, and furnace speed of the drying and pyrolysis integrated furnace. The control method for the drying and pyrolysis integrated furnace of the embodiment of the present invention can be well applied to the drying and pyrolysis integrated furnace equipment, and can predict the sludge carbonization and pyrolysis trends during the working process, and adjust the relevant working parameters based on the prediction. This can well meet the comprehensive requirements of sludge dehydration rate, particle fineness, and efficient carbonization.

The utility model belongs to the field of carbonization equipment, and discloses a pyrolysis converter and a material taking device for the pyrolysis converter. The pyrolysis converter comprises a converter body, the converter body is in a transverse cylinder shape, a feeding port and a discharging port are formed in the two end faces of the converter body respectively, and the size of the feeding port is larger than the packaging size of materials used for being put into the pyrolysis converter; the material taking device for the pyrolysis converter is used for packaging and taking out reacted materials in the pyrolysis converter and comprises a material taking rod, the lower end of the material taking rod is fixedly connected with a bearing frame, the bottom of the bearing frame is provided with a rotating wheel used for enabling the material taking rod to move in the length direction of the bearing frame, and one end of the material taking rod is fixedly provided with a material taking rake in the height direction. According to the pyrolysis converter disclosed by the utility model, a material dismounting step and a special feeding device are omitted, the production steps are simplified, the production cost is reduced, and the material taking device disclosed by the utility model can be used for easily taking out the empty oil drum from the pyrolysis converter without manually taking out the empty oil drum from the pyrolysis converter, so that the pyrolysis converter is suitable for pyrolysis of materials.

The invention relates to the technical field of sludge pyrolysis, and discloses a system for preparing biochar particles from sludge, which comprises a plurality of auxiliary pyrolyzing furnaces and a main pyrolyzing furnace, the auxiliary pyrolyzing furnace and the main pyrolyzing furnace are used for accommodating sludge and providing a high-temperature environment for pyrolyzing the sludge; the pyrolysis process is divided into three sections, namely early-stage pyrolysis, transfer and later-stage pyrolysis; the early-stage pyrolysis is synchronously carried out in a plurality of auxiliary pyrolyzing furnaces, the transfer is that solid products of all the auxiliary pyrolyzing furnaces are conveyed to the main pyrolyzing furnace, and the later-stage pyrolysis is that the main pyrolyzing furnace carries out concentrated pyrolysis on the solid products of all the auxiliary pyrolyzing furnaces; the pyrolysis process of preparing the biochar from the sludge is divided into early-stage pyrolysis and later-stage pyrolysis, the early-stage pyrolysis and the later-stage pyrolysis are carried out in the multiple auxiliary pyrolysis furnaces and the main pyrolysis furnace respectively, the later-stage pyrolysis space can be fully utilized, the yield of biochar particles obtained through single-time pyrolysis is increased, and the production efficiency is greatly improved.

The utility model relates to the technical field of sludge carbonization, in particular to a sludge carbonization device with a smoke recycling structure, which comprises a mounting base, a rotating shell is fixedly mounted on the outer surface of the mounting base, and a driving motor is fixedly mounted at one end, close to an electric push rod, of the rotating shell. And a rotating cylinder is rotationally mounted in the rotating shell. According to the sludge carbonization device with the flue gas recycling structure, after the combustion flame nozzle is started, sludge particles in the rotating cylinder are heated, the sludge particles are carbonized through heating, and at the moment, the sludge particles can generate a large amount of pyrolysis flue gas; pyrolysis flue gas is fed into the combustion flame nozzle to be combusted and used through starting of the gas suction pump, meanwhile, gas in a pipeline cannot flow back through the one-way valve, the pyrolysis flue gas generated when sludge particles are carbonized can be recycled, energy consumed when the sludge particles are carbonized is reduced, and the production cost is reduced.