CN109553261B

CN109553261B - Thermal decomposition furnace

Info

Publication number: CN109553261B
Application number: CN201710890478.XA
Authority: CN
Inventors: 方亮
Original assignee: Inconelsh Heat Treatment Equipment Shanghai Co ltd
Current assignee: Inconelsh Heat Treatment Equipment Shanghai Co ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2022-11-15
Anticipated expiration: 2037-09-27
Also published as: CN109553261A

Abstract

The invention relates to the field of sludge harmless treatment, in particular to a thermal decomposition furnace, which comprises a furnace body, wherein a discharging system is arranged at the bottom of the furnace body, an air outlet and a feeding system are arranged at the top of the furnace body, combustion systems are respectively arranged at two sides of the top of the furnace body, each combustion system comprises a plurality of burners arranged along the length direction of the furnace body, the ignition positions of the burners are separated from the furnace body and indirectly transfer heat into the furnace body, a feeding system is arranged at the bottom of the furnace body, the feeding system comprises a plurality of transmission shafts arranged in parallel in the length direction of the furnace body, the transmission shafts penetrate through the furnace body in the width direction, and the end parts of the transmission shafts positioned on the same side surface of the furnace body extend out of the furnace body and are driven to rotate by the same power device. The thermal decomposition furnace can rapidly treat the sludge, has small limitation on the treatment process, and has high sludge harmless efficiency and high speed.

Description

Thermal decomposition furnace

Technical Field

The invention relates to the field of harmless treatment of sludge, in particular to a thermal decomposition furnace.

Background

Sludge treatment is a process of carrying out reduction, stabilization and harmless treatment on sludge. The higher the degree of wastewater treatment, the more sludge residue will be produced to be treated. A general sewage treatment plant must be provided with a sludge treatment facility unless the sewage is treated using land treatment or a sewage pond. For modern sewage treatment plants, the treatment and disposal of sludge has become the most complex and costly part of the operation of sewage treatment systems.

Sludge treatment is always a concern of the industry, the activated sludge process is a treatment method adopted by 90% of sewage treatment plants in the world at present, a large amount of sludge, high-yield sludge with high water content can be generated by the method, the sludge is inconvenient in the processes of storage, transportation, loading and unloading and the like, and high potential environmental safety risk and hidden danger exist, so that the sludge drying treatment is imperative.

The prior art sludge treatment methods include the following:

an electric energy sludge drying method is to convert electric energy into energy in the forms of heat energy or microwaves and the like, heat wet sludge to evaporate water, and dry the sludge, and usually adopts an electric heating furnace to indirectly dry the sludge. The drying system consists of a sludge storage unit, a conveying and metering unit, an electric heating drying (electric energy sludge dryer) unit, an output unit and a temporary storage unit. Because of higher energy consumption, the method is not suitable for sewage treatment plants with short electricity consumption and large mud production, and is suitable for areas with small mud production, rich electric energy and low price.

The steam drying method is to utilize steam heat energy to exchange heat through a shell layer of a heat exchanger to evaporate moisture in sludge and dry the sludge. Sludge drying machines using steam as a heat source are divided into different forms such as a disc type drying machine, a paddle type drying machine, a turbine type drying machine and the like according to different structures or internal components. The steam can realize comprehensive recycling, and is an ideal clean heat source. Generally, low-pressure steam of about 1.0MPa and 160-230 ℃ is used, and the method has high device cost and inconvenient later maintenance.

The solar sludge drying method is a sludge treatment technology for drying and stabilizing sludge in a sewage treatment plant by using solar energy as a main energy source. The technology utilizes solar energy, and has the advantages of low-temperature drying, low operation cost, simple operation, safe and stable operation and the like by means of the traditional greenhouse drying process. The driving force is the water vapor pressure difference between the water content in the sludge and the water vapor partial pressure in the air. Considering the influences of climate, season and weather, the solar drying process is carried out in a large greenhouse provided with a sludge turning machine, wet sludge is input from one end, and dry sludge is output from the other end. The solar drying device mainly comprises a ground structure, a greenhouse and a sludge turning machine. The ground structure is similar to a concrete road, and the sludge turning machine is arranged on the guide rails on the two sides and performs the operation of moving up and down back and forth, thereby playing the roles of spreading sludge, reversely airing and conveying sludge. The solar drying device has high dependence on weather and occupies a large area.

The natural gas (coal gas) drying method is to use natural gas (coal gas) as a heat source for fuel to dry sludge in a drying device. In order to prevent combustion and explosion, safety measures such as nitrogen protection, oxygen concentration linkage, temperature linkage, sludge back mixing and the like are usually provided so as to improve the safety of equipment operation. The system comprises a feeding unit, a drying machine, a discharging unit, a tail gas treatment unit, a back mixing unit, an instrument control system and the like. Usually as a pretreatment unit for the pyrolysis treatment of sludge. The temperature of the furnace flue gas is generally between 120 and 200 ℃, the harmless efficiency is low, and the speed is slower.

Disclosure of Invention

In order to solve the problems, the invention provides a thermal decomposition path, the thermal decomposition furnace can rapidly treat the sludge, the treatment process is less limited, the sludge harmless efficiency is high, and the speed is high.

In order to achieve the purpose, the invention adopts the technical scheme that:

a thermal decomposition furnace comprises a furnace body, wherein a discharge system is arranged at the bottom of the furnace body, an air outlet and a feeding system are arranged at the top of the furnace body, combustion systems are respectively arranged on two sides of the top of the furnace body, each combustion system comprises a plurality of burners arranged along the length direction of the furnace body, and the ignition positions of the burners are separated from the furnace body and indirectly transfer heat into the furnace body;

the furnace body bottom is provided with feeding system, and this feeding system includes a plurality of transmission shafts that set up side by side in furnace body length direction, run through the furnace body in the transmission shaft width direction, the transmission shaft lies in the tip of the same side of furnace body and stretches out the furnace body and is driven by same power device and rotate.

Preferably, the feeding system comprises a power output assembly and an intermediate transmission assembly, the power output assembly comprises a power device, a driving chain wheel, a first mounting frame and a power chain, wherein the first mounting frame is fixed on the side surface of the furnace body, the power device is mounted on the first mounting frame, and the driving chain wheel is sleeved at the power end of the power device; middle drive assembly includes second mounting bracket, driven shaft, first driven sprocket and second driven sprocket, the driven shaft level sets up on the second mounting bracket, first driven sprocket and second driven sprocket are installed respectively on the driven shaft, first driven sprocket rotation face and drive sprocket's rotation face are at the coplanar, the power chain is around the form on first driven sprocket and drive sprocket, and wherein first driven sprocket's diameter is greater than drive sprocket's diameter.

Preferably, the feeding system further comprises an upper row and a lower row of transmission shafts, the two rows of transmission shafts are arranged at intervals in the height direction of the furnace body, and the upper row and the lower row of transmission shafts are sleeved by a transmission chain and realize transmission.

Preferably, the feeding system further comprises a tooth pressing assembly, the tooth pressing assembly comprises a tooth pressing mounting frame, a sliding plate and a chain wheel, the tooth pressing mounting frame is fixed on the furnace body and provided with a tooth pressing vertical frame, a locking screw is mounted on the tooth pressing vertical frame, a vertically arranged sliding groove is formed in the sliding plate, and the locking screw is inserted into the sliding groove, so that the sliding plate can slide up and down along the limiting position of the locking screw and is locked by the locking screw in a rotating manner; and a chain pressing chain wheel is arranged on the sliding plate and pressed on the transmission chain.

Preferably, the power device is a speed reduction motor.

Preferably, the feeding systems are arranged in two groups, the two groups of feeding systems are arranged adjacently up and down, and the two groups of feeding systems are arranged in an inverted manner.

Preferably, the side surface of the furnace body is provided with a furnace door for manually detecting the internal device of the furnace body.

Preferably, the bottom of the furnace body is of a funnel-shaped structure, the discharging system is arranged at the lower end of the funnel-shaped structure and comprises a discharging box, a discharging motor and a discharging power shaft in power connection with the discharging motor, the transmission shaft is arranged in the discharging box, and transmission threads are arranged on the transmission shaft and driven by the discharging power shaft to enable waste materials to be output out of the discharging box.

Preferably, the furnace body is further provided with a cooling water system, a cooling part of the cooling water system is opposite to the transmission shaft, and the cooling water system is used for cooling the transmission shaft.

Preferably, the feeding system is a plate-turning feeding device which is easy to control the feeding speed and the feeding amount.

The beneficial effects of the invention are as follows:

this pyrolysis furnace separates the setting through nozzle in furnace body and the combustion system for the burning things which may cause a fire disaster that the nozzle produced separates with the furnace body is inside, makes the inside gas of furnace body be difficult to be lighted. Set up the transmission shaft on the furnace body, through the overall arrangement of the position that sets up of transmission shaft for mud pyrolysis efficiency is high, and upper portion decomposition can not appear and accomplish, and below mud is not decomposed the drawback completely.

Drawings

FIG. 1 is a right isometric view of the present invention;

FIG. 2 is a left side isometric view of the present invention;

FIG. 3 is a partial enlarged view A of FIG. 1;

fig. 4 is a partially enlarged view B of fig. 1.

The names of the parts indicated by the numerical references in the above figures are as follows: wherein

1-furnace body, 2-burner, 3-combustion system, 4-deviation-rectifying tensioning system, 5-driving system and 6

Flue gas system, 7-furnace door, 8-cooling water system, 9-explosion-proof opening, 10-feeding system and 11

Outlet, 12 feeding system, 13 discharging frame, 14 discharging system, 15 protective gas

A system;

511-power unit, 512-drive shaft, 513-drive sprocket, 514-first mounting bracket, 515

-power chain, 521-second mounting cross frame, 522-second mounting vertical frame, 523-driven shaft, 524-first driven sprocket, 525-second driven sprocket, 526-drive chain, 531-upper driven sprocket, 532-lower driven sprocket, 533-drive chain, 541-tooth pressing cross frame, 542-tooth pressing vertical frame, 543-slide plate, 544-slide groove, 545-locking screw, 546-chain pressing sprocket.

Detailed Description

The present invention is described in detail below with reference to the attached drawings.

As shown in fig. 1-4, the present embodiment provides a thermal decomposition furnace, which includes a furnace body 1, a discharging system 14 is disposed at the bottom of the furnace body 1, an air outlet 11 and a feeding system 12 are disposed at the top of the furnace body 1, combustion systems 3 are respectively disposed at two sides of the top of the furnace body 1, each combustion system 3 includes a plurality of burners 2 disposed along the length direction of the furnace body 1, and the ignition positions of the burners 2 are separated from the furnace body 1 and indirectly transfer heat to the interior of the furnace body 1; the bottom of the furnace body 1 is provided with a feeding system 10, the feeding system 10 comprises a plurality of transmission shafts arranged in parallel in the length direction of the furnace body 1, the transmission shafts penetrate through the furnace body 1 in the width direction, and the end parts of the transmission shafts positioned on the same side surface of the furnace body 1 extend out of the furnace body 1 and are driven by the same power device 511 to rotate.

As shown in FIG. 1, the X-axis direction of the coordinate axes is the length direction of the furnace body 1, the Y-axis direction is the width direction of the furnace body 1, and the Z-axis direction is the height direction of the furnace body 1. The side surface of the furnace body 1 in the Y-axis direction is provided with a furnace door 7, and when the decomposing furnace stops working, a worker can detect the condition in the furnace body 1 through the furnace door 7.

Two sets of combustion systems 3 are installed to handing-over department at 1Y axle direction side of furnace body and top surface, and every combustion system 3 of group includes a plurality of nozzles 2, and a plurality of nozzles 2 are according to the straight-line arrangement in the X axle direction. The top of the furnace body 1 is provided with a radiant tube, the main body of the radiant tube is arranged in the furnace body 1, after the burner 2 ignites combustible gas, heat is transferred into the furnace body 1 through the radiant tube, flue gas generated after the combustible gas is ignited is collected through a flue gas system 6 on the radiant tube, and the flue gas can be treated in a centralized manner. In this embodiment, each group of combustion systems 3 has 10 burners 2, a mixed gas input pipeline of gas and air is provided at a position corresponding to each burner 2, and the mixed gas input pipeline is correspondingly communicated with the burners 2.

The combustible gas ignited by the burner 2 is isolated from the interior of the furnace body 1, so that the combustible gas generated after thermal decomposition of the sludge is prevented from being ignited, open fire generated by igniting the burner 2 is isolated from the interior of the furnace body 1, and the combustible gas in the furnace body 1 is prevented from exploding.

The feeding systems 10 arranged on two sides of the furnace body 1 in the Y-axis direction are used for stirring sludge in the furnace body 1, so that the sludge is stirred more sufficiently, the sludge thermal decomposition efficiency is better, and the decomposition is more sufficient. The sludge at the bottom can not be decomposed.

The feeding system 10 comprises a plurality of transmission shafts arranged along the length direction of the furnace body 1, the ends of the transmission shafts are mounted on the furnace body 1 through bearings, the main bodies of the transmission shafts penetrate through the furnace body 1 in the width direction of the furnace body 1, and the parts of the transmission shafts located inside the furnace body 1 are fixed with stirring blades, which are spiral or plane blades vertically fixed on the transmission shafts in some embodiments, preferably spiral blades. When the power device 511 drives the transmission shaft to rotate, the transmission shaft can stir the sludge in the furnace body 1, so that the sludge is decomposed more completely.

In this embodiment, the feeding system 10 includes a power output assembly and an intermediate transmission assembly, the power output assembly includes a power device 511, a driving sprocket 513, a first mounting bracket 514 and a power chain 515, wherein the first mounting bracket 514 is fixed on the side of the furnace body 1, the power device 511 is mounted on the first mounting bracket 514, and the driving sprocket 513 is sleeved on the power end of the power device 511; middle drive assembly includes the second mounting bracket, driven shaft 523, first driven sprocket 524 and second driven sprocket 525, driven shaft 523 level sets up on the second mounting bracket, and first driven sprocket 524 and second driven sprocket 525 install respectively on driven shaft 523, and the surface of rotation of first driven sprocket 524 and drive sprocket 513 is in the coplanar, and power chain 515 winds the form on first driven sprocket 524 and drive sprocket 513, and wherein the diameter of first driven sprocket 524 is greater than the diameter of drive sprocket 513.

As shown in fig. 3, a first mounting bracket is fixed on the side of the furnace body 1, the first mounting bracket has a horizontally arranged supporting surface, the power device 511 is vertically mounted on the first mounting bracket, and a power shaft (i.e., a driving shaft 512) of the power device 511 is connected with a driving sprocket 513 through a key, so that the driving sprocket 513 can rotate in a direction parallel to the side wall of the furnace body 1.

The position between transmission shaft and driving sprocket 513 is equipped with the second installing support, wherein second installation crossbearer 521 stretches out furnace body 1 side, second installation vertical frame 522 is fixed at the lower wall of second installation crossbearer 521 and downward straight line extends, driven shaft 523 passes through the rotatable fixing of bearing on second installation vertical frame 522, first driven sprocket 524 and second driven sprocket 525 install respectively on driven shaft 523, wherein first driven sprocket 524 all is located the coplanar with power sprocket's rotation plane, power sprocket passes through power chain 515 and drives first driven sprocket 524 and rotate, and then can drive second driven sprocket 525 and rotate. Correspondingly, the transmission shaft is sleeved with a lower driven chain wheel 532, and the second driven chain wheel 525 and the lower driven chain wheel 532 are wound and transmitted through the

transmission chains

526 and 533, so that the transmission shaft can be driven to rotate.

In this embodiment, the feeding system 10 further includes two rows of transmission shafts, an upper row and a lower row, the two rows of transmission shafts are arranged at intervals in the height direction of the furnace body 1, and the two rows of transmission shafts are sleeved by the

transmission chains

526 and 533 to realize transmission. So that the sludge in the furnace body 1 can be rolled and stirred in a larger range, and the sludge decomposition completion degree is further improved.

As shown in fig. 4, the feeding system 10 further includes a tooth pressing assembly, which includes a tooth pressing mounting frame, a sliding plate 543 and a chain pressing sprocket 546, the tooth pressing mounting frame is fixed on the furnace body 1, the tooth pressing mounting frame has a tooth pressing vertical frame 542, a locking screw 545 is mounted on the tooth pressing vertical frame 542, a vertically arranged sliding groove 544 is formed on the sliding plate 543, and the locking screw 545 is inserted into the sliding groove 544, so that the sliding plate 543 can slide up and down along the limit of the locking screw 545 and is rotated and locked by the locking screw 545; a chain pressing sprocket 546 is mounted on the slide 543, and the chain pressing sprocket 546 presses on the

drive chains

526, 533.

Specifically, a transmission shaft is installed on the furnace body 1, an upper driven sprocket 531 is sleeved on the end of the transmission shaft, and the

transmission chains

526, 533 can circularly rotate around the upper driven sprocket 531 and the lower driven sprocket 532.

In order to adjust the transmission efficiency of the

transmission chains

526, 533, a chain pressing sprocket 546 is installed on the moving path of the

transmission chains

526, 533, so that the transmission chains are conveniently installed on the upper driven sprocket 531 and the lower driven sprocket 532, and have a high transmission effect after installation.

Wherein, install the pressure tooth crossbearer 541 in the side of furnace body 1, press tooth crossbearer 541 vertically to stretch out the furnace body 1 side, press tooth vertical frame 542 of slabby fixed plate-like in the free end of tooth crossbearer 541, paste a slide 543 in pressing the outside of tooth vertical frame 542, slide 543 have vertical slotted spout 544, transmit the rotatable connection of spout 544 on pressing tooth vertical frame 542 through a locking screw 545, press chain sprocket 546 through a lower part of the rotatable connection of a pivot 543. After the transmission chain is sleeved on the upper driven sprocket 531, the lower driven sprocket 532 and the second driven sprocket 525, the chain is in a non-tight state, the locking screw 545 is firstly rotated outwards, so that the sliding plate 543 can slide up and down, and after the transmission chain is pressed to a proper state, the locking screw 545 is rotated inwards, so that the position of the sliding plate 543 can be fixed, and the transmission chain is kept in a proper tension state.

As can be seen from fig. 1 and 2, the transmission shafts of the present embodiment are disposed in a staggered manner, so that the stirring effect is better. The arrangement position of the transmission shafts is arranged in a W shape. The feeding systems 10 are arranged in two groups, the two groups of feeding systems 10 are arranged adjacently up and down, and the two groups of feeding systems 10 are arranged in an inverted manner. It can be seen that the two sets of drive shafts are arranged in central symmetry.

In this embodiment, the stirring speed of the transmission shaft should not be too fast, and the transmission shaft should be kept rotating at a slower speed, so as to stir the sludge and enable the sludge stirred above to be subjected to thermal decomposition for a sufficient length.

Correspondingly, the power device 511 adopts a speed reduction motor. The diameter and the number of teeth of the driving sprocket 513 are smaller than those of the first driven sprocket 524. The diameter and the number of teeth of the second driven sprocket 525 are smaller than those of the lower driven sprocket 532 and the upper driven sprocket 531. Through the cooperation of the three structures, the rotating speed of the transmission shaft is kept in a lower state, the transmission shaft obtains larger torque, and the force for stirring the sludge is enough.

In this embodiment, 1 bottom of furnace body is the infundibulate structure, and discharging system 14 sets up the lower extreme at the funnel structure, and discharging system 14 includes ejection of compact case 13, ejection of compact motor and the ejection of compact power shaft of being connected with ejection of compact motor power, and in the ejection of compact case 13 was put into to the transmission shaft, be equipped with the transmission screw thread on the transmission shaft, this transmission screw thread was driven by ejection of compact power shaft and was made waste material output ejection of compact case 13.

The sludge after the thermal decomposition moves to the lower opening through the funnel-shaped structure according to the self gravity, and is collected to the top opening of the discharging box 13, and the top opening of the discharging box 13 which can be understood is in butt joint with the lower opening of the funnel-shaped structure. The discharge port of the discharge box 13 is arranged in the Y direction, the motor drives the rotating shaft to rotate, and the sludge after thermal decomposition is discharged out of the discharge box 13 through the threaded blade in the discharge box 13.

In the embodiment, when the decomposing furnace is in a working state, the temperature in the furnace body 1 reaches 1300-1800 ℃, and the transmission shaft is in danger of softening at the temperature. In order to avoid overheating and softening of the transmission shaft, a cooling water system 8 is further arranged on the furnace body 1, a cooling part of the cooling water system 8 is opposite to the position of the transmission shaft, and the cooling water system 8 is used for cooling the transmission shaft.

An explosion-proof opening 9 is arranged on the top surface of the furnace body 1 to prevent gas in the furnace body 1 from exploding.

The feed system 12 is a plate-over feed device that facilitates control of feed rate and feed volume.

In this embodiment, the deviation rectifying and tensioning system 4 is correspondingly arranged at the position of the driving system 55, so as to prevent the transmission failure of the power device 511511 or the deviation of any chain.

The furnace body 1 is provided with the protective gas system 15, and when danger occurs in the furnace body 1, the protective gas system 15 injects inert gas into the furnace body 1 to prevent the danger from occurring in the furnace body 1.

The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the invention are therefore considered to be within the scope of the invention.

Claims

1. A thermal decomposition furnace is characterized by comprising a furnace body, wherein a discharging system is arranged at the bottom of the furnace body, an air outlet and a feeding system are arranged at the top of the furnace body, combustion systems are respectively arranged at two sides of the top of the furnace body, each combustion system comprises a plurality of burners arranged along the length direction of the furnace body, the ignition positions of the burners are separated from the furnace body and indirectly transfer heat into the furnace body,

the furnace body is internally provided with a feeding system and a discharging system consisting of three augers at the bottom of the furnace body, the feeding system comprises a plurality of transmission shafts which are arranged in parallel in the length direction of the furnace body, the transmission shafts penetrate through the furnace body in the width direction, and stirring blades are fixed at the parts of the transmission shafts, which are positioned in the furnace body; the transmission shafts are arranged in an upper row and a lower row, the two rows of transmission shafts are arranged at intervals in the height direction of the furnace body, and the arrangement positions of the transmission shafts are arranged in a W shape; the end parts of the upper and lower rows of transmission shafts positioned on the same side surface of the furnace body extend out of the furnace body and are driven by the same power device to rotate;

the furnace body is also provided with a cooling water system, the cooling part of the cooling water system is opposite to the transmission shaft, and the cooling water system is used for cooling the transmission shaft;

the bottom of the furnace body is of a funnel-shaped structure, the discharging system is arranged at the lower end of the funnel structure and comprises a discharging box, a discharging motor and a discharging power shaft in power connection with the discharging motor, the transmission shaft is arranged in the discharging box, and a transmission stirring cage is arranged on the transmission shaft and is driven by the discharging power shaft and enables waste materials to be output out of the discharging box;

two groups of combustion systems are arranged at the joint of the side surface and the top surface of the furnace body in the Y-axis direction, each group of combustion system comprises a plurality of burners, and the burners are linearly arranged in the X-axis direction; and the feeding systems are arranged on two side surfaces of the furnace body in the Y-axis direction.

2. The thermal decomposition furnace of claim 1, wherein the feeding system comprises a power output assembly and an intermediate transmission assembly, the power output assembly comprises a power device, a driving chain wheel, a first mounting frame and a power chain, wherein the first mounting frame is fixed on the side surface of the furnace body, the power device is mounted on the first mounting frame, and the driving chain wheel is sleeved on a power end of the power device; middle drive assembly includes second mounting bracket, driven shaft, first driven sprocket and second driven sprocket, the driven shaft level sets up on the second mounting bracket, first driven sprocket and second driven sprocket are installed respectively on the driven shaft, first driven sprocket plane of rotation and drive sprocket's plane of rotation are at the coplanar, the power chain is around the form on first driven sprocket and drive sprocket, and wherein first driven sprocket's diameter is greater than drive sprocket's diameter.

3. The pyrolysis furnace of claim 2, wherein the stirring blade is a flat blade spirally or vertically fixed on the driving shaft.

4. The thermal decomposition furnace according to claim 3, wherein the feeding system further comprises a tooth pressing assembly, the tooth pressing assembly comprises a tooth pressing mounting frame, a sliding plate and a chain pressing sprocket, the tooth pressing mounting frame is fixed on the furnace body, the tooth pressing mounting frame is provided with a tooth pressing vertical frame, a locking screw is mounted on the tooth pressing vertical frame, a vertically arranged sliding groove is formed in the sliding plate, and the locking screw is inserted into the sliding groove, so that the sliding plate can slide up and down along the limit of the locking screw and can be rotated and locked by the locking screw; and a chain pressing chain wheel is arranged on the sliding plate and pressed on the transmission chain.

5. The thermal decomposition furnace of claim 1, wherein the power device is a reduction motor.

6. The thermal decomposition furnace according to any one of claims 2 to 5, wherein there are two sets of the feeding systems, the two sets of the feeding systems are disposed adjacent to each other in the up-down direction, and the two sets of the feeding systems are disposed upside down to each other.

7. The pyrolytic furnace of claim 1, wherein the side of the furnace body is provided with a furnace door for manual inspection of the interior of the furnace body.

8. The pyrolytic furnace of claim 1, wherein the feeding system is a plate-turning feeding device that facilitates control of feeding speed and feeding amount.