Internal self-cleaning oil refining furnace

Abstract

The invention relates to the technical field of oil refining furnaces, and particularly discloses an in-furnace self-cleaning oil refining furnace which comprises a furnace body, a feeding device, a tar scraping device and a slag discharging device. An oil refining cavity is formed in the furnace body; the feeding device is connected with the outer wall of the furnace body and communicates with the oil refining cavity; the tar scraping device is arranged in the furnace body, the tar scraping device comprises a cleaning liquid storage mechanism, a scraping knife and a driving mechanism, a conveying channel is formed in the scraping knife, the conveying channel is communicated with a blade part of the scraping knife, and the driving mechanism drives the scraping knife to move along the cavity wall of the oil refining cavity; the slag discharging device communicates with the oil refining cavity and the outside and is used for discharging slag and tar scraped by the tar scraping device. The oil refining furnace has the effects that the interior of the oil refining furnace is conveniently cleaned, and the cleaning cost of the oil refining furnace is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of oil refining furnaces, and in particular to an oil refining furnace with self-cleaning in the furnace. Background Art

[0002] The oil refinery is a device that fractionates the hydrocarbon molecules with different melting points in the oil refinery raw materials by heating them at different temperatures. In the production process of existing oil refineries, heavy oil can form gasoline or diesel through cracking reaction, but the heavy oil will also crack and coke during the cracking reaction, forming coke blocks and coke powder inside the oil refinery, which affects the production of the oil refinery.

[0003] In the existing production process, the method for cleaning the coke blocks and coke powder in the oil refinery is mainly to stop the oil refinery, open the oil refinery, and manually clean the coke blocks and coke powder attached to the inner wall of the oil refinery with chemical agents.

[0004] The existing process of cleaning the oil refinery requires a lot of manpower and material resources, and it takes a lot of time to complete the cleaning inside the oil refinery. There are problems such as the cleaning process is complicated and the cleaning cost is high. Summary of the invention

[0005] In order to facilitate the internal cleaning of an oil refinery and reduce the cleaning cost of the oil refinery, the present application provides an oil refinery with internal self-cleaning.

[0006] The present application provides a self-cleaning oil refining furnace with the following technical solution:

[0007] A self-cleaning oil refining furnace, comprising:

[0008] The furnace body has an oil refining chamber formed inside;

[0009] A feeding device connected to the outer wall of the furnace body and in communication with the oil refining chamber;

[0010] A tar scraping device is arranged inside the furnace body, comprising a cleaning liquid storage mechanism, a scraping blade and a driving mechanism, wherein a conveying channel is provided inside the scraping blade, the conveying channel is connected to the blade of the scraping blade, and the driving mechanism drives the scraping blade to move along the cavity wall of the oil refining cavity;

[0011] The slag discharge device is connected with the oil refining chamber and the outside world, and is used for discharging the slag and the tar scraped by the tar scraping device.

[0012] By adopting the above technical scheme, the raw materials enter the refining chamber in the furnace body through the feeding device, the slag formed in the oil refining furnace is discharged through the slag discharge device, the tar scraper device is started after the oil refining is completed, the cleaning liquid is stored through the cleaning liquid storage mechanism, and the conveying channel in the scraper conveys the cleaning liquid to the scraper, the scraper abuts against the cavity wall of the oil refining chamber and is driven by the driving mechanism to scrape off the coke blocks and coke powder softened by the cleaning liquid, and finally discharged through the slag discharge device, completing the self-cleaning of the oil refining furnace, and finally facilitating the internal cleaning of the oil refining furnace and reducing the cleaning cost of the oil refining furnace.

[0013] Optionally, the blade of the scraper includes a cutting blade and a softening portion, one side of the cutting blade slides against the wall of the oil refining chamber, and the other side of the cutting blade is inclined from the tip of the blade toward the wall of the oil refining chamber away from the tip of the blade, the softening portion is connected to the end of the cutting blade away from the tip of the blade, the connection between the softening portion and the cutting blade is arranged parallel to the oil refining chamber, and the outlet of the conveying channel is arranged on the surface of the softening portion.

[0014] By adopting the above technical solution, the cutting edge of the scraper uses the mechanical force provided by the blade tip formed by the inclined side to form a gap between the coke block and the oil refining chamber, and the softening part sprays the cleaning liquid between the cutting part and the softening part through the conveying channel, thereby softening the coke block, reducing the resistance of the coke block to the cutting edge, making it easier for the scraper to cut off the coke block, and the connection between the softening part and the cutting edge is arranged parallel to the inner wall of the oil refining chamber, which reduces the probability of direct contact between the coke block and the softening part, and further facilitates the scraper to cut off the coke block.

[0015] Optionally, the main body of the scraper is connected to one end of the softening portion away from the cutting edge, and an inclined surface is arranged at one end of the main body of the scraper close to the softening portion, and the inclined surface is arranged parallel to the side of the cutting edge away from the wall of the refining chamber.

[0016] By adopting the above technical solution, the main body of the scraper guides the moving direction of the coke block through the inclined surface, which facilitates the separation of the coke block from the wall of the refining chamber. The inclined surface is arranged parallel to the side of the cutting blade, so that there is a gap between the inclined surface and the moving direction of the tar guided by the cutting blade, which facilitates the spraying of the cleaning liquid and reduces the resistance of the tar to the cutting blade.

[0017] Optionally, the tar scraping device also includes a cleaning blade, the main body of the cutting blade is arranged at intervals from the cavity wall of the oil refining chamber, the cleaning blade is arranged between the main body of the cutting blade and the cavity wall of the oil refining chamber, and the tip of the cleaning blade is arranged at intervals from the cutting blade and slides against the cavity wall of the oil refining chamber.

[0018] By adopting the above technical scheme, the cleaning blade cleans again the cavity wall of the oil refining cavity that has been cleaned once by the cutting blade, so that the cavity wall of the oil refining cavity is cleaned more thoroughly, and there is a gap between the side of the cutting blade facing the cavity wall of the oil refining cavity and the oil refining cavity, which facilitates the cleaning of the cleaning blade and reduces the friction between the cutting blade and the cavity wall of the oil refining cavity.

[0019] Optionally, a cleaning port is formed on a side of the softening portion facing the cleaning blade, and the cleaning port is connected to the conveying channel.

[0020] By adopting the above technical solution, the cleaning port is connected to the conveying channel to spray cleaning liquid between the cleaning blade and the cutting blade to soften the coke blocks remaining on the inner wall of the refining chamber, making it easier to scrape off the tar blocks on the inner wall of the refining chamber, making the scraping of the coke blocks on the wall of the refining chamber more thorough.

[0021] Optionally, there is an inclined angle between the tip of the cleaning edge and the tip of the cutting edge.

[0022] By adopting the above technical solution, the inclined angle guides the coke blocks cleaned by the cleaning blade, thereby reducing the probability of coke blocks accumulating between the cleaning blade and the cutting blade.

[0023] Optionally, the inclination angle is 20°-45°.

[0024] By adopting the above technical solution, it is further convenient to transport the coke blocks cleaned by the cleaning blade out from between the cleaning blade and the cutting blade.

[0025] Optionally, the driving mechanism includes a rotating motor, a first telescopic rod and a second telescopic rod, the rotating motor is fixedly connected to one end of the cleaning liquid storage mechanism, the end of the cleaning liquid storage mechanism facing away from the rotating motor is fixedly connected to the first telescopic rod, the first telescopic rod and the rotating motor are both coaxially arranged with the refining chamber, one end of the second telescopic rod is vertically connected to the side of the first telescopic rod facing away from the rotating motor, and the scraper is connected to the end of the second telescopic rod facing away from the first telescopic rod.

[0026] By adopting the above technical solution, the driving mechanism drives the cleaning liquid storage mechanism to rotate by rotating the motor, and the cleaning liquid storage mechanism transmits the rotational force to the first telescopic rod, the first telescopic rod drives the second telescopic rod to rotate, and finally drives the scraper to rotate, the first telescopic rod controls the axial position of the scraper in the oil refining chamber, and the second telescopic rod controls the scraper to abut the inner wall of the oil refining chamber, thereby realizing the scraping of tar on the inner wall of the oil refining chamber by the scraper.

[0027] Optionally, the feeding device includes a feeding hopper and a conveying screw, wherein the conveying screw is arranged at the bottom end of the feeding hopper and is connected to the oil refining chamber.

[0028] By adopting the above technical solution, the feed hopper collects the raw materials, and the conveying screw conveys the raw materials into the interior of the refining chamber to complete the conveying of the raw materials.

[0029] Optionally, the slag discharge device includes a sealing plate, a discharge paddle, a heater and a conveying pipe. A discharge outlet is opened at the bottom end of the furnace body. The sealing plate is used to seal the discharge outlet. The discharge paddle is arranged close to the sealing plate and is located on the side of the sealing plate away from the refining chamber. The discharge paddle is driven by a motor. The heater is arranged in the discharge outlet. The conveying pipe is connected to the discharge outlet.

[0030] By adopting the above technical scheme, the slag discharge device seals the discharge outlet through the sealing plate when the oil refining furnace is refining oil. When the oil refining furnace is cleaned, the sealing plate is opened to connect the discharge outlet with the inside of the oil refining chamber. The discharge paddle discharges the slag in the oil refining chamber and the coke blocks and coke powder scraped by the tar scraping device, thereby completing the cleaning of the oil refining chamber.

[0031] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0032] 1. The oil refining raw materials enter the oil refining chamber in the furnace body through the feeding device. After the oil refining in the oil refining furnace is completed, the formed slag is discharged through the slag discharge device. The tar scraping device is driven by the driving mechanism, so that the scraping blade moves close to the inner wall of the oil refining chamber. The cleaning liquid storage mechanism is transported to the scraping blade through the conveying channel, so that the cleaning liquid contacts the coke block at the scraping blade, softens the coke block, and facilitates the scraping blade to scrape the coke block on the wall of the oil refining chamber, thereby realizing self-cleaning in the oil refining furnace, and finally facilitating the internal cleaning of the oil refining furnace and reducing the cleaning cost of the oil refining furnace;

[0033] 2. The scraper provides mechanical force through the cutting edge to form a gap between the coke block and the inner wall of the refining chamber, and then softens the coke block through the softening part to reduce the resistance of the coke block to the inner wall of the refining chamber, making it easier for the scraper to clean the coke block on the wall of the refining chamber;

[0034] 3. A cleaning blade is arranged below the scraper blade, and the cleaning blade is used to clean the inner wall of the oil refining chamber that has been cleaned once by the cutting blade, so that the coke blocks on the wall of the oil refining chamber can be cleaned more thoroughly. The cleaning port is connected to the conveying channel to spray cleaning liquid between the cleaning blade and the cutting blade, so that the coke blocks remaining on the inner wall of the oil refining chamber between the cutting blade and the cleaning blade are softened, which facilitates the cleaning of the coke blocks on the wall of the oil refining chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the external structure of an embodiment of the present application.

[0036] Figure 2 It is a schematic diagram of the structure inside the furnace body in this application.

[0037] Figure 3 It is an axonometric view of the scraper in the embodiment of the present application.

[0038] Figure 4 It is a schematic diagram of the bottom surface structure of the scraper in the embodiment of the present application.

[0039] Figure 5 It is a schematic diagram of the placement position of the discharge paddle in the embodiment of the present application.

[0040] In the figure: 1. furnace body; 11. oil refining chamber; 12. discharge port; 2. feeding device; 21. feeding hopper; 22. conveying screw; 3. tar scraping device; 31. cleaning liquid storage mechanism; 32. scraping knife; 321. conveying channel; 322. cutting blade; 323. softening part; 3231. cleaning port; 324. inclined surface; 33. driving mechanism; 331. rotating motor; 332. first telescopic rod; 333. second telescopic rod; 34. cleaning blade; 4. slag discharge device; 41. sealing plate; 42. discharge paddle; 43. heater; 44. conveying pipe. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0042] The present application embodiment discloses a self-cleaning oil refining furnace. Figure 1 , Figure 2 and Figure 3 A self-cleaning oil refining furnace includes a furnace body 1, a feeding device 2, a tar scraping device 3 and a slag discharge device 4.

[0043] An oil refining chamber 11 is provided in the furnace body 1, and the feeding device 2 is connected to the outer wall of the furnace body 1 and communicated with the oil refining chamber 11. The tar scraping device 3 includes a cleaning liquid storage mechanism 31, a scraping blade 32 and a driving mechanism 33. The cleaning liquid storage mechanism 31 is connected to the driving mechanism 33, and the driving mechanism 33 is connected to the scraping blade 32. A conveying channel 321 is provided inside the scraping blade 32. The cleaning liquid storage mechanism 31 is communicated with the conveying channel 321, and the conveying channel 321 is connected to the blade of the scraping blade 32. The scraping blade 32 moves along the wall of the oil refining chamber 11. The slag discharge device 4 connects the oil refining chamber 11 with the outside world, and the slag discharge device 4 is arranged at the bottom end of the furnace body 1.

[0044] The feeding device 2 provides a feeding channel for the refined raw materials, and the slag discharge device 4 discharges the slag formed by refining in the furnace body 1. After the refining is completed, the driving mechanism 33 in the tar scraper 3 drives the scraper 32 to rotate, and the cleaning liquid storage mechanism 31 conveys cleaning liquid to the blade of the scraper 32 through the conveying channel 321. The cleaning liquid contacts the coke blocks on the cavity wall of the refining cavity 11 and softens the coke blocks. The scraper 32 scrapes off the softened coke blocks, and finally discharges the scraped coke blocks through the slag discharge device 4, thereby realizing self-cleaning in the refinery, and finally facilitating the internal cleaning of the refinery and reducing the cleaning cost of the refinery.

[0045] Reference Figure 2 and Figure 3 The driving mechanism 33 includes a rotating motor 331, a first telescopic rod 332 and a second telescopic rod 333. The rotating motor 331 is fixedly connected to the furnace body 1 and arranged coaxially with the oil refining chamber 11. The output shaft of the rotating motor 331 is fixedly connected to one end of the cleaning liquid storage mechanism 31. The end of the cleaning liquid storage mechanism 31 away from the rotating motor 331 is fixedly connected to one end of the first telescopic rod 332. The second telescopic rod 333 is connected to one end of the first telescopic rod 332 away from the rotating motor 331. The end of the second telescopic rod 333 away from the first telescopic rod 332 is connected to the scraper 32. The first telescopic rod 332 and the second telescopic rod 333 are both provided with a transport cavity (not marked in the drawings), and the transport cavity is connected to the cleaning liquid storage mechanism 31 and the conveying channel 321. A scraper storage cavity (not marked in the drawings) is provided on one side of the oil refining chamber 11. The sliding cover of the scraper storage cavity is covered with an isolation cover (not marked in the drawings). The tar scraping device 3 is normally in the scraper storage cavity.

[0046] The driving mechanism 33 is powered by the rotating motor 331, which drives the first telescopic rod 332 and the second telescopic rod 333 to rotate, and causes the cleaning liquid storage mechanism 31 to rotate accordingly. The cleaning liquid storage mechanism 31 transports the cleaning liquid to the scraper 32 through the transport cavity, and the scraper 32 assists in scraping the tar on the wall of the oil refining cavity 11. Under normal conditions, the first telescopic rod 332 and the second telescopic rod 333 are retracted, so that the scraper 32 is recovered into the scraper storage cavity, and the scraper storage cavity is covered by an isolation cover that is slidably connected to the wall of the oil refining cavity 11.

[0047] Reference Figure 2 and Figure 3 The blade of the scraper 32 includes a cutting blade 322 and a softening portion 323. One side of the cutting blade 322 slides against the wall of the refining chamber 11, and the other side of the cutting blade 322 is inclined from the tip of the blade to the wall of the refining chamber 11. The softening portion 323 is connected to the end of the cutting blade 322 away from the tip of the blade. The softening portion 323 is arranged parallel to the connection between the cutting blade 322, and the outlet of the conveying channel 321 is arranged on the surface of the softening portion 323.

[0048] The scraper 32 provides mechanical force through the cutting edge 322 to create a gap between the coke blocks on the wall of the refining chamber 11 and the wall of the refining chamber 11. The conveying channel 321 in the softening part 323 sprays cleaning liquid onto the coke blocks to soften the coke blocks, thereby reducing the difficulty of removing the coke blocks and facilitating the removal of the coke blocks on the wall of the refining chamber 11.

[0049] Reference Figure 3 and Figure 4 The main body of the scraper 32 is connected to the softening portion 323 and is away from the end of the cutting edge 322. An inclined surface 324 is arranged at one end of the scraper 32 main body close to the softening portion 323. The inclined surface 324 is arranged parallel to the cavity wall of the cutting edge 322 away from the refining cavity 11.

[0050] The main body of the scraper 32 guides the softened tar through the inclined surface 324, which facilitates the removal of coke blocks. The inclined surface 324 is arranged parallel to the side of the cutting blade 322, and combined with a section of the softening part 323 parallel to the wall of the refining chamber 11, a gap is created between the coke block and the main body of the cutting blade 322, which facilitates the softening part 323 to spray cleaning liquid onto the coke block, while reducing the resistance of the coke block to the scraper 32, thereby facilitating the removal of the coke block.

[0051] Reference Figure 2 and Figure 3 The cutting blade 322 is arranged at a distance from the wall of the oil refining chamber 11 on one side thereof, and the cutting blade 322 is connected to the wall of the oil refining chamber 11 with a cleaning blade 34, the tip of the cleaning blade 34 is arranged at a distance from the cutting blade 322, and the cleaning blade 34 is in sliding contact with the wall of the oil refining chamber 11.

[0052] The cleaning blade 34 cleans the wall of the oil refining chamber 11 again after being cleaned once by the cutting blade 322, so that the wall of the oil refining chamber 11 is cleaned more thoroughly.

[0053] Reference Figure 3 and Figure 4 A cleaning port 3231 is provided on one side of the softening portion 323 facing the cleaning blade 34, and the cleaning port 3231 is connected to the conveying channel 321. There is an inclined angle between the tip of the cleaning blade 34 and the tip of the cutting blade 322, and the inclined angle is preferably 20°-45°.

[0054] The softening portion 323 sprays cleaning liquid onto the tar on the wall of the oil refining chamber 11 between the cleaning blade 34 and the cutting blade 322 through the cleaning port 3231 to soften the tar, making it easier for the cleaning blade 34 to remove the tar on the wall of the oil refining chamber 11.

[0055] Reference Figure 1 and Figure 2The feeding device 2 includes a feeding hopper 21 and a conveying screw 22. The feeding hopper 21 is fixedly connected to the furnace body 1. A feeding port (not marked in the drawings) is opened on the inner wall of the furnace body 1. The conveying screw 22 is arranged in the feeding port. The feeding port is connected to the refining chamber 11. The end of the conveying screw 22 is connected to the refining chamber 11.

[0056] The raw materials enter from the feed hopper 21, so that the raw materials contact with the conveying screw 22, and finally the raw materials are conveyed from the feed port into the interior of the oil refining chamber 11 by the conveying screw 22, thereby completing the input of the raw materials into the oil refining furnace.

[0057] Reference Figure 1 , Figure 2 and Figure 5 The slag discharge device 4 includes a sealing plate 41, a discharge paddle 42, a heater 43 and a conveying pipe 44. A discharge port 12 is opened at the bottom end of the furnace body 1. The sealing plate 41 covers the discharge port 12. The discharge paddle 42 is located on the side of the sealing plate 41 away from the refining chamber 11. The discharge paddle 42 is connected to a motor. The heater 43 is arranged on the inner wall of the discharge port 12. The conveying pipe 44 is connected to the discharge port 12.

[0058] When the slag discharge device 4 is refining oil in the oil refinery, the sealing plate 41 covers the discharge port 12, thereby reducing the probability of material leakage in the oil refinery. After the oil refinery is finished refining, the sealing plate 41 is opened, and the slag and the coke blocks scraped by the tar scraping device 3 enter the conveying pipe 44 through the discharge port 12 and are discharged. The discharge paddle 42 accelerates the slag discharge speed of the slag discharge device 4, reducing the probability of the slag and coke blocks solidifying in the discharge port 12 and causing the discharge port 12 to be blocked. The heater 43 heats the slag and coke blocks in the discharge port 12, further reducing the probability of the slag and coke blocks blocking the discharge port 12.

[0059] The implementation principle of the in-furnace self-cleaning oil refining furnace of the embodiment of the present application is as follows: the feeding device 2 connected to the furnace body 1 inputs the raw materials into the oil refining chamber 11 of the furnace body 1, and the slag discharge device 4 discharges the slag after the oil refining is completed. After the slag in the furnace body 1 is discharged, the tar scraper device 3 cleans the cavity wall of the oil refining chamber 11, and the driving mechanism 33 drives the scraper 32 to move along the inner wall of the oil refining chamber 11. During the movement of the scraper 32, the cleaning liquid storage mechanism 31 sprays the cleaning liquid onto the inner wall of the oil refining chamber 11 at the scraper 32, thereby softening the coke blocks attached to the inside of the oil refining chamber 11, facilitating the scraper 32 to clean the inner wall of the oil refining chamber 11, thereby realizing self-cleaning of the interior of the oil refining furnace, reducing labor costs, and ultimately facilitating the internal cleaning of the oil refining furnace and reducing the cleaning cost of the oil refining furnace.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-cleaning oil refining furnace, characterized in that: include: A furnace body (1) is provided with an oil refining chamber (11) therein; A feeding device (2) connected to the outer wall of the furnace body (1) and in communication with the oil refining chamber (11); A tar scraping device (3) is arranged inside the furnace body (1), comprising a cleaning liquid storage mechanism (31), a scraping blade (32) and a driving mechanism (33); a conveying channel (321) is provided inside the scraping blade (32), the conveying channel (321) is connected to the blade of the scraping blade (32), and the driving mechanism (33) drives the scraping blade (32) to move along the cavity wall of the oil refining cavity (11); The slag discharge device (4) is connected to the oil refining chamber (11) and the outside world and is used to discharge the slag and the tar scraped by the tar scraping device (3).

2. The in-furnace self-cleaning oil refining furnace according to claim 1, characterized in that: The blade of the scraper (32) comprises a cutting blade (322) and a softening portion (323); one side of the cutting blade (322) is slidably abutted against the cavity wall of the oil refining cavity (11); the other side of the cutting blade (322) is arranged obliquely from the blade tip toward the cavity wall away from the oil refining cavity (11); the softening portion (323) is connected to the end of the cutting blade (322) away from the blade tip; the connection between the softening portion (323) and the cutting blade (322) is arranged parallel to the oil refining cavity (11); and the outlet of the conveying channel (321) is arranged on the surface of the softening portion (323).

3. The in-furnace self-cleaning oil refining furnace according to claim 2, characterized in that: The main body of the scraper (32) is connected to one end of the softening portion (323) away from the cutting edge (322), and an inclined surface (324) is arranged at one end of the main body of the scraper (32) close to the softening portion (323), and the inclined surface (324) is arranged parallel to the side of the cutting edge (322) away from the cavity wall of the refining cavity (11).

4. The in-furnace self-cleaning oil refining furnace according to claim 3, characterized in that: The tar scraping device (3) also includes a cleaning blade (34); the main body of the cutting blade (322) is arranged at intervals from the cavity wall of the oil refining cavity (11); the cleaning blade (34) is arranged between the main body of the cutting blade (322) and the cavity wall of the oil refining cavity (11); the tip of the cleaning blade (34) is arranged at intervals from the cutting blade (322) and slides against the cavity wall of the oil refining cavity (11).

5. The in-furnace self-cleaning oil refining furnace according to claim 4, characterized in that: A cleaning port (3231) is provided on a side of the softening portion (323) facing the cleaning blade (34), and the cleaning port (3231) is connected to the conveying channel (321).

6. The in-furnace self-cleaning oil refining furnace according to claim 4, characterized in that: An inclined angle is formed between the tip of the cleaning edge (34) and the tip of the cutting edge (322).

7. The in-furnace self-cleaning oil refining furnace according to claim 6, characterized in that: The inclination angle is 20°-45°.

8. The in-furnace self-cleaning oil refining furnace according to claim 1, characterized in that: The driving mechanism (33) comprises a rotating motor (331), a first telescopic rod (332) and a second telescopic rod (333); the rotating motor (331) is fixedly connected to one end of the cleaning liquid storage mechanism (31); one end of the cleaning liquid storage mechanism (31) which is away from the rotating motor (331) is fixedly connected to the first telescopic rod (332); the first telescopic rod (332) and the rotating motor (331) are both coaxially arranged with the oil refining chamber (11); one end of the second telescopic rod (333) is vertically connected to a side of the first telescopic rod (332) which is away from the rotating motor (331); and the scraper (32) is connected to one end of the second telescopic rod (333) which is away from the first telescopic rod (332).

9. The in-furnace self-cleaning oil refining furnace according to claim 1, characterized in that: The feeding device (2) comprises a feeding hopper (21) and a conveying screw (22), wherein the conveying screw (22) is arranged at the bottom end of the feeding hopper (21), and the conveying screw (22) is connected to the oil refining chamber (11).

10. The in-furnace self-cleaning oil refining furnace according to claim 1, characterized in that: The slag discharge device (4) comprises a sealing plate (41), a discharge paddle (42), a heater (43) and a conveying pipe (44); a discharge port (12) is provided at the bottom end of the furnace body (1); the sealing plate (41) is used to seal the discharge port (12); the discharge paddle (42) is arranged close to the sealing plate (41) and is located on a side of the sealing plate (41) away from the oil refining chamber (11); the discharge paddle (42) is driven by a motor; the heater (43) is arranged in the discharge port (12); and the conveying pipe (44) is connected to the discharge port (12).

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