Waste plastic heating cracking oil fume heavy component capturing device

Abstract

The application provides a waste plastic heating cracking oil fume heavy component capturing device, which is a heavy component capturing device arranged in an exhaust pipe of a cracking chamber of a heating cracking system. The heavy component capturing device is provided with at least one fume separator, which comprises a fume separation barrel. The barrel body is internally provided with a fume separation space. An upper part of the barrel body is provided with a fume outlet connected with a fume guide pipe leading to an oil product recovery system. A lower part of the barrel body is provided with a heavy component outlet connected with a heavy component exhaust pipe returning to the cracking chamber. A fume guide pipe is inserted into the fume separation space from the upper part of the barrel body. One end of the fume guide pipe is communicated with the exhaust pipe, and the other end is provided with a pipe opening close to the lower part of the barrel body. The height distance from the pipe opening to the fume outlet is greater than the diameter of the barrel body. The overall structure can improve the quality of oil product recovery, reduce or avoid the adhesion and blockage of wax (grease) on the pipeline of the oil product recovery system, and reduce the maintenance cost or expense.

Description

Technical Field

[0001] This invention relates to a waste plastic thermal pyrolysis oil fume recombinant capture device that can improve the quality of oil recovery and reduce or avoid wax (grease) adhesion and blockage in the pipeline of the oil recovery system. Background Technology

[0002] Waste plastics that cannot be recycled in the form of plastic pellets, such as thermosetting plastics, plastic bags, and plastic garbage bags, can be reused by using pyrolysis to recover oil products (diesel / gasoline / natural gas).

[0003] Existing waste plastic pyrolysis recycling systems first generate pyrolysis fumes from waste plastics through a pyrolysis system. These fumes are then processed by an oil recovery system to produce diesel, gasoline, and natural gas (gas) for recovery. When the pyrolysis fumes are sent to the oil recovery system, they typically pass through a heavy component trap to remove unpyrolyzed or incompletely pyrolyzed soot particles, fine dust particles, and other heavy components to avoid affecting the quality of the recovered oil. The existing heavy component traps consist of multiple mesh layers within a trapping tank to capture these heavy components. While these traps can capture heavy components from the fumes... However, the mesh of this capture layer is prone to clogging due to grease buildup, often requiring considerable manpower for cleaning and maintenance. In particular, even when the mesh is not clogged, the capture layer cannot capture the wax (grease) components in the fumes. Because wax (grease) components have a high ignition point and are highly viscous, even if a large amount of soot and dust particles in the fumes have been removed, the fumes still contain wax (grease) components. In the chilled water condensation treatment pipeline of the oil recovery system, the pipe diameter is often blocked due to wax (grease) adhesion. The excessively frequent pipeline cleaning and maintenance work significantly affects the economic benefits of waste plastic oil recovery. Summary of the Invention

[0004] The main objective of this invention is to provide a device for capturing recombinant components of waste plastic heated and pyrolyzed oil fumes.

[0005] This invention provides a waste plastic heating and pyrolysis oil fume recombinant component capture device, characterized in that: the waste plastic is first heated and pyrolyzed to generate pyrolysis oil fume, and then the pyrolysis oil fume is processed by an oil recovery system to produce diesel, gasoline and gas (gas) for recovery.

[0006] The thermal pyrolysis system comprises a heating device installed on the outer surface of the furnace wall of a thermal pyrolysis furnace, forming a pyrolysis chamber inside. An agitator is installed above the furnace body, with its agitator extending into the pyrolysis chamber. A feed inlet and a flue gas outlet are located above the pyrolysis chamber, and slag outlets are located above and below the pyrolysis chamber. The feed inlet receives waste plastic falling into the pyrolysis chamber, where it is heated by the heating device during agitation, forming pyrolysis fumes that are discharged from the flue gas outlet. Residue remaining after the waste plastic undergoes thermal pyrolysis within the pyrolysis chamber is discharged from the slag outlet. A flue gas pipe is connected to the outlet of the flue gas outlet, and the flue gas pipe is equipped with a heavy component capture device. The heavy component capture device includes at least one fume separator.

[0007] The at least one smoke separator includes:

[0008] A smoke separation tank has a smoke separation space inside the tank body, an upper part of the tank body above the smoke separation space, and a lower part of the tank body below the space. The upper part of the tank body is provided with a smoke outlet, which is connected to a smoke conduit leading to the oil recovery system. The lower part of the tank body is provided with a heavy component outlet, which is connected to a heavy component discharge pipe leading to the pyrolysis chamber.

[0009] An oil fume duct passes through the upper part of the barrel and is inserted into the smoke separation space. One end of the duct is connected to the exhaust pipe at the end of the pyrolysis chamber, which can connect to the pyrolysis oil fumes discharged from the exhaust port of the pyrolysis chamber. The other end has a pipe opening facing the lower part of the barrel and close to the lower part of the barrel, which can release the pyrolysis oil fumes into the smoke separation space. The height and distance of the pipe opening from the smoke outlet are greater than the diameter of the barrel of the smoke separation barrel.

[0010] In the aforementioned waste plastic heating and pyrolysis oil fume recombinant component capture device, the height distance from the pipe opening of the oil fume duct to the smoke outlet is 1.2 to 1.8 times the diameter of the smoke separation barrel.

[0011] The waste plastic heating and pyrolysis oil fume recombinant capture device includes an oil fume heater on the surface of the body of the fume separation barrel, corresponding to the pipe opening of the oil fume duct, so that a heating zone is formed at the pipe opening of the fume separation space.

[0012] The waste plastic thermal pyrolysis fume heavy component capture device, wherein at least one soot particle capture device is provided between the at least one fume separator and the pyrolysis chamber, and the at least one soot particle capture device is connected to the exhaust pipe; the at least one soot particle capture device includes:

[0013] A dust collection bin has a dust collection space inside its body. The dust collection space has a top and a bottom. A dust collection section is provided between the top and bottom of the bin, which divides the dust collection space into an upper space and a lower space. The lower space has a smoke inlet connected to a smoke exhaust pipe. The top of the bin has a smoke outlet connected to the oil fume duct of at least one smoke separator. The bottom of the bin has a dust outlet connected to a dust discharge pipe leading to the pyrolysis chamber. Furthermore, the dust collection section has multiple baffle layers, each of which has a guide plate layer to form multiple tortuous channels.

[0014] The waste plastic heating and pyrolysis oil fume recombinant component capture device has a heater located between the smoke inlet and the ash particle capture part on the surface of the barrel body of the ash particle capture barrel, so that the lower space forms a heating zone.

[0015] When the fume duct guides the pyrolysis fumes discharged from the pyrolysis chamber into the fume separation tank, and releases them into the fume separation space from the duct opening, the unpyrolyzed or incompletely pyrolyzed heavy components in the pyrolysis fumes, such as tiny or fine particulate soot, dust particles, and wax (grease) components, will deposit at the bottom of the tank, while the completely pyrolyzed, lighter components will rise to the top of the tank. The heavy component discharge pipe returns the captured heavy components deposited at the bottom of the tank to the pyrolysis chamber for reheating, and the fume duct removes the unpyrolyzed or incompletely pyrolyzed components from the pyrolysis fumes. The completely pyrolyzed smoke is sent to the oil recovery system. The overall structure allows the oil recovery system to use the heavy components that are absent or present in the received smoke, which not only improves the quality of oil recovery, but also ensures that the pyrolyzed smoke discharged from the pyrolysis chamber, which contains high-ignition-point and highly viscous wax (grease) components, is separated in the smoke separation space of the smoke separation tank and is not sent to the oil recovery system with the smoke. This also reduces or avoids blockages in the pipelines of the oil recovery system caused by wax (grease) adhesion, significantly reducing pipeline cleaning and maintenance costs.

[0016] The present invention also provides a waste plastic heating and pyrolysis oil fume heavy component capture device, wherein the height distance from the pipe opening of the oil fume duct to the smoke outlet is 1.2 to 1.8 times the diameter of the smoke separation barrel; this not only ensures that the smoke has sufficient space distance within the smoke separation space to form a separation effect with the heavy components, but also prevents the smoke from excessively reducing its ability to reach the oil recovery system.

[0017] The present invention further provides a waste plastic heating and pyrolysis oil fume heavy component capture device, wherein an oil fume heater is provided on the surface of the body of the fume separation barrel corresponding to the pipe opening of the oil fume duct, so that a heating zone is formed at the pipe opening of the fume separation space; the oil fume heater heats the pyrolysis oil fume released from the pipe opening in the heating zone, at least maintaining the temperature of the pyrolysis oil fume in the heating zone equivalent to the temperature of the pyrolysis chamber, so that the heavy components captured by the sediment at the bottom of the barrel are normally discharged back into the pyrolysis chamber, and the smoke rising to the top of the barrel can be normally sent to the oil recovery system through the fume duct.

[0018] The present invention further provides a waste plastic thermal pyrolysis oil fume heavy component capture device, wherein at least one soot particle capture device is provided between the at least one fume separator and the pyrolysis chamber and connected to the exhaust pipe; the at least one soot particle capture device includes:

[0019] A particle-catching barrel has an internal particle-catching space. The particle-catching space has a top and a bottom. A particle-catching section is located between the top and bottom, dividing the particle-catching space into an upper and lower space. The lower space has a smoke inlet connected to an exhaust pipe. The top has a smoke outlet connected to the oil fume duct of at least one smoke separator. The bottom has a particle outlet leading to a particle discharge pipe connecting to the pyrolysis chamber. The particle-catching section has multiple baffle layers, each with a guide plate layer forming multiple tortuous channels. When the pyrolysis oil fume discharged from the pyrolysis chamber flows from the lower space to the upper space of the particle-catching space through the smoke inlet, the tortuous channels of the particle-catching section prevent unpyrolyted soot particles from passing through. The particle discharge pipe then... The soot particles captured at the bottom are discharged back into the pyrolysis chamber for reheating. The exhaust port connects the ash-free oil fume from the upper space to the oil fume duct, ensuring that the oil fume released from the duct of the at least one smoke separator into the smoke separation space is low-ash-content ash-free oil fume, effectively reducing the workload of the at least one smoke separator during smoke separation. Furthermore, the surface of the ash-capturing barrel is provided with a heater located between the exhaust port and the ash-capturing section, creating a heating zone in the lower space. The heater heats the pyrolysis oil fume entering the exhaust port in this heating zone, ensuring that the temperature of the pyrolysis oil fume in the heating zone is not lower than the temperature of the pyrolysis chamber. This allows the soot particles captured at the bottom of the barrel to be smoothly discharged back into the pyrolysis chamber, and the ash-free oil fume from the upper space to smoothly flow from the exhaust port to the oil fume duct of the at least one smoke separator. Attached Figure Description

[0020] Figure 1This is a flowchart of the waste plastic oil recycling process.

[0021] Figure 2 This is a schematic diagram of the usage state of an embodiment of the present invention in a thermal pyrolysis system.

[0022] Figure 3 This is a cross-sectional view of the smoke separator structure of the present invention.

[0023] Figure 4 This is a schematic diagram showing the state of smoke separation in the smoke separator of the present invention.

[0024] Figure 5 This is a schematic diagram illustrating the usage state of another embodiment of the present invention in a thermal pyrolysis system.

[0025] Figure 6 This is a cross-sectional view of the structure of the smoke separator and soot particle catcher used in this invention.

[0026] Figure 7 This is a cross-sectional view of the soot particle catcher structure of the present invention.

[0027] Figure 8 is a schematic diagram of the smoke separation state when the smoke separator and the soot particle catcher of the present invention are used together.

[0028] Explanation of reference numerals in the attached drawings: 1. Heating pyrolysis system; 2. Oil recovery system; 10. Waste plastics; 11. Pyrolysis fumes; 11. Heavy components; 11A. Ash particles; 110A. Ash-removed fumes; 110B. Smoke; 11B. Diesel fuel; 12. Gasoline; 13. Gas fuel; 14. Pyrolysis furnace; 20. Furnace body; 200. Heating device; 21. Pyrolysis chamber; 22. Feed inlet; 23. Exhaust port; 24. Slag outlet; 25. Exhaust pipe; 26. Mixer; 30. Agitator; 31. Heavy component capture devices; 40, 40A. Smoke separator; 50. Smoke separation tank; 51. Tank body; 510. Diameter D; Smoke separation space; 52. Heating zone; 52A. Upper part of the tank body. 53; Smoke outlet 530; Smoke duct 531; Lower part of barrel 54; Heavy component outlet 540; Heavy component pipe 541; Fume heater 55; Fume duct 60; Pipe opening 61; Height distance HD; Ash particle catcher 70; Ash particle catching barrel 71; Barrel body 710; Smoke inlet 711; Ash particle catching space 72; Upper space 72A; Lower space 72B; Heating zone 720B; Top of barrel 73; Smoke outlet 730; Bottom of barrel 74; Ash particle outlet 740; Ash particle pipe 741; Ash particle catching part 75; Baffle layer 750; Guide plate layer 751; Twisted channel 76; Heater 77. Detailed Implementation

[0029] To achieve the above objectives, the present invention provides preferred embodiments, which are described in detail below with reference to the accompanying drawings:

[0030] like Figure 1 , Figure 2As shown, this invention provides a waste plastic thermal pyrolysis oil fume recombinant capture device. Waste plastic 10 is first passed through a thermal pyrolysis system 1 to generate pyrolysis oil fume 11. This pyrolysis oil fume 11 is then processed through an oil recovery system 2 to produce diesel 12, gasoline 13, and natural gas 14 (gas) for recovery. The thermal pyrolysis system 1 consists of a heating device 21 on the outer surface of the furnace wall of a thermal pyrolysis furnace 20, forming a pyrolysis chamber 22 inside. An agitator 31 is installed above the furnace body 200, extending into the pyrolysis chamber 22. An inlet valve is installed above the pyrolysis chamber 22. The feed inlet 23 and the exhaust outlet 24 are connected, and a slag outlet 25 is provided below. The feed inlet 23 is used to receive the waste plastic 10 falling into the pyrolysis chamber 22. During the stirring of the agitator 31, it is heated by the heating device 21 to form pyrolysis fumes 11, which are discharged from the exhaust outlet 24. The residue remaining in the pyrolysis chamber 22 after the waste plastic 10 is heated and pyrolyzed can be discharged from the slag outlet 25. The exhaust pipe 26 is connected to the outlet end of the exhaust outlet 24 and is equipped with a heavy component capture device 40. The heavy component capture device 40 is equipped with at least one smoke separator 50. The at least one smoke separator 50, such as Figure 2 , Figure 3 As shown, it includes:

[0031] A smoke separation tank 51 has a smoke separation space 52 inside its tank body 510. Above the smoke separation space 52 is an upper part 53 of the tank body, and below it is a lower part 54 of the tank body. The upper part 53 of the tank body is provided with a smoke outlet 530, which leads to a smoke conduit 531 leading to the oil recovery system 2. The lower part 54 of the tank body is provided with a heavy component outlet 540, which leads to a heavy component discharge pipe 541 leading to the pyrolysis chamber 22.

[0032] An oil fume duct 60 passes through the upper part 53 of the barrel and is inserted into the smoke separation space 52. One end of the duct is connected to the exhaust pipe 26 at the end of the pyrolysis chamber 22 and can be connected to the pyrolysis oil fume 11 discharged from the exhaust port 24 of the pyrolysis chamber 22. The other end has a pipe opening 61 facing the lower part 54 of the barrel and close to the lower part 54 of the barrel. The pyrolysis oil fume 11 can be released into the smoke separation space 52 through the pipe opening 61. The height distance HD from the pipe opening 61 to the smoke outlet 530 is greater than the diameter D of the barrel 510 of the smoke separation barrel 51.

[0033] like Figure 1 , Figure 4As shown, when the fume duct 60 guides the pyrolysis fume 11 discharged from the pyrolysis chamber 22 into the smoke separation tank 51, and releases it from the duct 61 into the smoke separation space 52, the unpyrolyzed or incompletely pyrolyzed heavy components 11A contained in the pyrolysis fume 11, such as tiny or fine particulate soot particles, soot particles, and wax (grease) components, will deposit in the lower part 54 of the tank, while the completely pyrolyzed, lighter (lower density) smoke 11B portion of the pyrolysis fume 11 will rise to the upper part 53 of the tank; the heavy component discharge pipe 541 discharges the heavy component 11A deposited and captured in the lower part 54 of the tank back into the pyrolysis chamber 22 for reheating, and the smoke duct 5... 31. The completely pyrolyzed smoke 11B portion of the pyrolyzed oil fume 11 is sent to the oil recovery system 2. The overall structure allows the oil recovery system 2 to use the heavy component 11A, which is absent or present in the received smoke 11B, to improve the quality of oil recovery. In addition, the high-ignition-point, highly viscous wax (grease) component of the pyrolyzed oil fume 11 discharged from the pyrolysis chamber 22 is separated in the smoke separation space 52 of the smoke separation tank 51 and is not sent to the oil recovery system 2 along with the smoke 11B. This also reduces or avoids blockages in the pipelines of the oil recovery system 2 caused by wax (grease) adhesion, significantly reducing pipeline cleaning and maintenance costs or expenses.

[0034] According to the above embodiments, preferably, such as Figure 3 As shown, the height distance HD from the pipe opening 61 of the fume duct 60 to the fume outlet 530 is 1.2 to 1.8 times the diameter D of the body 510 of the fume separation barrel 51; as Figure 4 This ensures that the smoke 11B has sufficient spatial distance within the smoke separation space 52 to form a separation effect with the heavy component 11A, and also prevents the smoke 11B from excessively reducing its ability to reach the oil recovery system 2.

[0035] According to the above embodiments, optionally, such as Figure 2 , Figure 3 As shown, the surface of the body 510 of the smoke separation barrel 51, corresponding to the outlet 61 of the fume duct 60, is equipped with a fume heater 55 (which can be an eddy current heater or an electric heating tube heater), so that a heating zone 52A is formed at the outlet 61 of the smoke separation space 52; as Figure 4 The fume heater 55 heats the pyrolysis fume 11 released from the pipe 61 in the heating zone 52A, at least maintaining the temperature of the pyrolysis fume 11 in the heating zone 52A at a temperature equivalent to that of the pyrolysis chamber 22. This allows the heavy component 11A deposited and captured in the lower part 54 of the barrel to be normally discharged back into the pyrolysis chamber 22, and the smoke 11B rising to the upper part 53 of the barrel to be normally sent to the oil recovery system 2 through the smoke duct 531.

[0036] Based on the above embodiments, the present invention can further improve the smoke separation effect through the following other embodiment, such as... Figure 5 , Figure 6 , Figure 7 As shown, in the recombinant component capture device 40A, at least one soot particle catcher 70 is provided between the at least one smoke separator 50 and the pyrolysis chamber 22, connected to the exhaust pipe 26; the at least one soot particle catcher 70 includes:

[0037] A dust collection bin 71 has a dust collection space 72 inside its body 710. The dust collection space 72 has a top 73 above it and a bottom 74 below it. A dust collection section 75 is provided between the top 73 and the bottom 74. The dust collection space 72 is divided into an upper space and a lower space 72B. The lower space 72B has a smoke inlet 711 connected to the exhaust pipe 26. The top 73 has a smoke outlet 730 connected to the fume duct 60 of at least one smoke separator 50. The bottom 74 has a dust outlet 740 leading to a dust discharge pipe 741 that connects to the pyrolysis chamber 22. Furthermore, the dust collection section 75 has multiple partition layers 750, each with a guide plate layer 751 forming multiple tortuous channels 76. Figure 5 8. When the smoke inlet 711 connects the pyrolysis fume 11 discharged from the pyrolysis chamber 22 to the lower space 72B of the ash particle capture space 72 and flows to the upper space 72A, the plurality of tortuous channels 76 of the ash particle capture section 75 can obstruct (restrict) the passage of unpyrolyted soot particles 110A contained in the pyrolysis fume 11; the soot particles 110A captured by the sediment at the bottom 74 of the tank are discharged back to the pyrolysis chamber 22 for reheating via the soot discharge pipe 741, and the smoke outlet 730 connects the ash-free fume 110B from the upper space 72A to the fume duct 60, so that the fume released from the duct 60 of the at least one smoke separator 50 into the smoke separation space 52 through the pipe opening 61 is the ash-free fume 110B with low ash particle content, effectively reducing the workload of the at least one smoke separator 50 when performing the separation of the fume 11B; Figure 6 , 7Furthermore, the surface of the body 710 of the aforementioned ash particle capture barrel 71 is provided with a heater 77 (which may be an eddy current heater or an electric heating tube heater) located between the smoke inlet 711 and the ash particle capture section 75, so that the lower space 72B forms a heating zone 720B, as shown in FIG8. The heater 77 heats the pyrolysis oil fume 11 entering the smoke inlet 711 in the heating zone 720B, so that the temperature of the pyrolysis oil fume 11 in the heating zone 720B is not lower than the temperature of the pyrolysis chamber 22, so that the ash particles 110A components deposited and captured at the bottom 74 of the barrel can be smoothly discharged back into the pyrolysis chamber 22, and the ash particles removed oil fume 110B in the upper space 72A can be smoothly connected from the smoke outlet 730 to the oil fume duct 60 of the at least one smoke separator 50.

[0038] The above description is illustrative only and not restrictive for the purposes of this invention. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined in the appended specification, and all such modifications, variations or equivalents will fall within the protection scope of this invention.

Claims

1. A device for capturing heavy components of waste plastic heating and pyrolysis oil fumes, characterized in that: Waste plastics are first heated and pyrolyzed to generate pyrolyzed oil fumes, and then the pyrolyzed oil fumes are processed through an oil recovery system to produce diesel, gasoline and gas (methane) for recovery. The heating pyrolysis system has a heating device installed on the outer surface of the furnace wall of a pyrolysis furnace body, forming a pyrolysis chamber inside, and a stirrer installed above the furnace body, with the stirrer extending into the pyrolysis chamber; The pyrolysis chamber is provided with a feed inlet and a flue gas outlet at the top, and a slag outlet at the bottom. The feed inlet is used to receive waste plastic falling into the pyrolysis chamber. During the stirring of the agitator, it is heated by the heating device to form pyrolysis fumes, which are discharged from the flue gas outlet. The residue remaining after the waste plastic is heated and pyrolyzed in the pyrolysis chamber can be discharged from the slag outlet. A flue gas pipe is connected to the outlet end of the flue gas outlet. The flue gas pipe is equipped with a heavy component capture device. The heavy component capture device is equipped with at least one smoke separator. The at least one smoke separator includes: A smoke separation tank has a smoke separation space inside the tank body, an upper part of the tank body above the smoke separation space, and a lower part of the tank body below the space. The upper part of the tank body is provided with a smoke outlet, which is connected to a smoke conduit leading to the oil recovery system. The lower part of the tank body is provided with a heavy component outlet, which is connected to a heavy component discharge pipe leading to the pyrolysis chamber. An oil fume duct passes through the upper part of the barrel and is inserted into the smoke separation space. One end of the duct is connected to the exhaust pipe at the end of the pyrolysis chamber, which can connect to the pyrolysis oil fumes discharged from the exhaust port of the pyrolysis chamber. The other end has a pipe opening facing the lower part of the barrel and close to the lower part of the barrel, which can release the pyrolysis oil fumes into the smoke separation space. The height and distance of the pipe opening from the smoke outlet are greater than the diameter of the barrel of the smoke separation barrel.

2. The waste plastic heating pyrolysis oil fume recombinant component capture device as described in claim 1, characterized in that, The height distance from the opening of the fume duct to the fume outlet is 1.2 to 1.8 times the diameter of the fume separation barrel.

3. The waste plastic heating pyrolysis oil fume recombinant component capture device as described in claim 1, characterized in that, An oil fume heater is provided on the surface of the body of the smoke separation barrel, corresponding to the position of the oil fume duct opening, so that a heating zone is formed at the position of the opening of the smoke separation space.

4. The waste plastic heating pyrolysis oil fume heavy component capture device as described in claim 1, characterized in that, At least one soot particle catcher is provided between the at least one smoke separator and the pyrolysis chamber in the heavy component capture device, and the at least one soot particle catcher is connected to the exhaust pipe; the at least one soot particle catcher includes: A dust collection bin has a dust collection space inside its body. The dust collection space has a top and a bottom. A dust collection section is provided between the top and bottom of the bin, which divides the dust collection space into an upper space and a lower space. The lower space has a smoke inlet connected to a smoke exhaust pipe. The top of the bin has a smoke outlet connected to the oil fume duct of at least one smoke separator. The bottom of the bin has a dust outlet connected to a dust discharge pipe leading to the pyrolysis chamber. Furthermore, the dust collection section has multiple baffle layers, each of which has a guide plate layer to form multiple tortuous channels.

5. The waste plastic heating pyrolysis oil fume recombinant component capture device as described in claim 4, characterized in that, The surface of the ash particle capture barrel is provided with a heater located between the smoke inlet and the ash particle capture part, so that the lower space forms a heating zone.

Images