A waste mineral oil cracking device for producing non-condensable recovery

Abstract

The utility model relates to the technical field of non-condensing steam recovery, and disclose a kind of recovery device of waste mineral oil cracking to produce non-condensing steam, including gas storage tank, moisture-absorbing box and industrial dehumidifier, processing jar and filter jar, the inner top wall and inner bottom wall of the filter jar are fixedly connected with filter screen.The recovery device of waste mineral oil cracking to produce non-condensing steam, by the setting of filter screen in filter jar, effectively intercept the solid impurities carried in non-condensing gas, avoid impurities into dilute alkali bin and reaction liquid mixing, prevent impurities from affecting subsequent chemical reaction efficiency, reduce the risk of pipeline blockage, ensure the long-term stable operation of recovery device, the solid impurities retained by filter screen can be automatically spiral conveyed to the discharge port by auger shaft, cooperate with the design of detachable discharge cover at the bottom, realize the efficient cleaning of impurities and the convenient maintenance of filtration system.

Description

Technical Field

[0001] This application relates to the field of noncondensable vapor recovery technology, specifically a device for recovering noncondensable vapor generated from the cracking of waste mineral oil. Background Technology

[0002] The pollution and usability of waste mineral oil need to be treated with caution in industrial production. Improper handling of waste mineral oil can cause environmental pollution, and improper handling can also lead to industrial hazards. At the same time, with reasonable recycling and utilization, waste oil can effectively alleviate the pressure of resource shortage and save energy. Non-condensable vapors are mainly small molecule hydrocarbons produced by cracking during high-temperature distillation, containing small amounts of air, hydrogen sulfide and sulfur dioxide and other sulfur-containing gases.

[0003] An existing patent (publication number: CN221825158U) discloses a device for recovering non-condensable vapors generated from the cracking of waste mineral oil, relating to the field of non-condensable vapor recovery technology. It includes a gas storage tank, with a support leg fixedly connected to the lower outer periphery of the tank. A switch is fixedly connected to the lower rear part of the outer side of the tank, and an outlet is fixedly connected to the lower rear part of the outer side of the tank. A switch is fixedly connected to the outer side of the outlet. This invention, by setting up a funnel and a vent pipe, can perform a first-stage treatment of the non-condensable vapors, improving the recovery quality. The inclusion of a first drawer, second drawer, and third drawer allows for timely repair and replacement of devices that malfunction due to prolonged use. The presence of a pressure gauge allows for real-time monitoring of the non-condensable vapor pressure within the storage tank, preventing potential dangers caused by excessive non-condensable vapor pressure during recovery and storage. It also allows for equipment fault detection and extends the service life of the storage tank.

[0004] The aforementioned non-condensable gas can undergo a first-step treatment by setting up a funnel and a vent pipe, allowing the non-condensable gas to react with dilute alkaline water. However, during use, the non-condensable gas often contains impurities such as solid particles or coke produced during the pyrolysis process. These impurities mix with the dilute alkaline water, affecting its service life. Furthermore, the dilute alkaline water is located in the groove of the treatment pipe, making it inconvenient to replace. If it is extracted, some impurities will adhere to the bottom wall of the groove, making it difficult to clean. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a device for recovering non-condensable vapors generated from the cracking of waste mineral oil. This device has advantages such as easy replacement of the reaction liquid and improved service life of the reaction liquid, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a recovery device for non-condensable vapor generated by the cracking of waste mineral oil, comprising a gas storage tank, a moisture absorption box and an industrial dehumidifier, a processing tank and a filter tank, wherein a filter screen is fixedly connected to the inner top wall and the inner bottom wall of the filter tank, and a partition plate is fixedly connected between the inner top wall and the inner bottom wall of the processing tank, wherein one side of the partition plate is a dilute alkali tank and the other side of the partition plate is a lime tank;

[0007] An input pipe and an output pipe are respectively provided on both sides of the filter screen. Both the input pipe and the output pipe are fixedly connected to the filter tank. The other end of the output pipe is fixedly connected to a first L-shaped pipe. The first L-shaped pipe is fixedly connected to the treatment tank. The other end of the first L-shaped pipe extends to the bottom of the dilute alkali silo. The top of one side of the partition plate is fixedly connected to a second L-shaped pipe. The other end of the second L-shaped pipe extends to the bottom of the lime silo.

[0008] Furthermore, a stirring shaft is rotatably connected between the inner top wall and the inner bottom wall of both the dilute alkali silo and the lime silo.

[0009] With the above scheme, stirring blades are fixedly connected to the outer surfaces of both stirring shafts. The arrangement of the stirring shafts and stirring blades can prevent lime water from settling and separating.

[0010] Furthermore, a power shaft is rotatably connected to the top of the processing tank, a power gear is fixedly connected to the outer surface of the power shaft, and transmission gears are fixedly connected to the top of both stirring shafts, with the power gear meshing with the two transmission gears.

[0011] The above scheme, through the setting of power gears and transmission gears, enables a single motor to synchronously drive a dual stirring system, simplifying the transmission structure and reducing equipment energy consumption.

[0012] Furthermore, a motor is installed above the processing tank, and a fixed base is fixedly connected to the outer surface of the motor. The bottom end of the fixed base is fixedly connected to the top end of the processing tank, and the output end of the motor is fixedly connected to the top end of the power shaft.

[0013] The above scheme and setup provide a stable and reliable rotational power source for the processing tank, while the fixed base ensures the stability of the motor's operation.

[0014] Furthermore, the bottom circumferential surfaces of the lime silo and the dilute alkali silo are both fixedly connected to discharge pipes, and a first solenoid valve is installed at the middle of each of the two discharge pipes. Metering pumps are installed at the top of the circumferential surfaces of the lime silo and the dilute alkali silo. The output ends of the two metering pumps extend into the lime silo and the dilute alkali silo and are fixedly connected. The input ends of the two metering pumps are fixedly connected to connecting pipes. The other ends of the two connecting pipes are fixedly connected to the external lime water and dilute alkali water storage containers, respectively. A second solenoid valve is installed at the middle of each of the two connecting pipes.

[0015] The above solution enables the regular and automatic replacement of lime water and dilute alkali solution, reducing the labor intensity of workers.

[0016] Furthermore, one end of the input terminal of the industrial dehumidifier is located at the top of the treatment tank, and the input terminal of the industrial dehumidifier is fixedly connected to the lime silo.

[0017] The above method allows the neutralized gas to be directly introduced into an industrial dehumidifier, achieving the purpose of dehumidifying the gas.

[0018] Furthermore, an installation frame is slidably inserted into the middle of the upper surface of the moisture absorption box, and moisture absorption blocks are installed between the inner walls of the installation frame. The output end of the industrial dehumidifier is fixedly connected to one side of the moisture absorption box, and the other side of the moisture absorption box is fixedly connected to the air storage tank through a pipeline.

[0019] Through the above solution, the pre-dehumidification of the industrial dehumidifier can effectively reduce the replacement frequency of the moisture absorption block and achieve dual dehumidification through the moisture absorption block.

[0020] Furthermore, the top of the mounting frame is fixedly connected to the upper surface of the moisture-absorbing box by bolts, enabling quick assembly and disassembly of the suction box.

[0021] The above solution facilitates the regular replacement of the moisture-absorbing blocks.

[0022] Furthermore, the filter screen has an arc-shaped cross-section, and a screw conveyor shaft concentric with the filter screen is rotatably connected to the top of the filter tank. Screw blades are fixedly connected to the outer surface of the screw conveyor shaft, and the edges of the screw blades are in close contact with the surface of the filter screen. A motor is installed on the top of the filter tank, and the output end of the motor is fixedly connected to the top of the screw conveyor shaft.

[0023] The above method can be used to spirally transport the solid impurities trapped by the filter screen to the slag discharge port.

[0024] Furthermore, the bottom end of the filter tank is threadedly sealed with a slag discharge cover.

[0025] The above method facilitates the regular cleaning of sludge at the bottom of the filter tank.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0027] This device for recovering non-condensable vapors generated from the cracking of waste mineral oil effectively intercepts solid impurities carried in the non-condensable vapors through the installation of an arc-shaped filter screen inside the filter tank. This prevents impurities from entering the dilute alkali tank and mixing with the reaction liquid, thus preventing impurities from affecting the efficiency of subsequent chemical reactions. At the same time, it reduces the risk of pipeline blockage and ensures the long-term stable operation of the recovery device. The solid impurities trapped by the filter screen can be automatically spirally conveyed to the slag discharge port by the auger shaft. With the design of a removable slag discharge cover at the bottom, efficient cleaning of impurities and convenient maintenance of the filtration system can be achieved.

[0028] The treatment tank adopts a dual-compartment structure to achieve staged treatment. After the acidic gas is initially neutralized by dilute alkali solution, the gas reacts fully with lime water through countercurrent contact. The gas rising characteristics are used to extend the reaction time, which significantly improves the neutralization efficiency of acidic gas. The combination design of the stirring shaft and stirring blades avoids lime water precipitation and stratification, ensures the uniformity of the reaction solution, and further improves the treatment effect.

[0029] The coordinated control of metering pumps and solenoid valves enables the regular automatic replenishment and discharge of lime water and dilute alkali solution, reducing the frequency of manual intervention, simplifying the solution replacement process, and reducing the labor intensity of workers. The dual dehumidification structure of industrial dehumidifier and activated carbon moisture-absorbing block first performs preliminary drying through industrial dehumidifier, and then uses activated carbon to adsorb residual moisture, significantly reducing gas humidity. The moisture-absorbing block can be quickly disassembled and installed through a sliding mounting frame, which is convenient for regular replacement and extends the service life of the moisture-absorbing structure. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 1 ;

[0031] Figure 2 This is a front view of the overall structure of this application;

[0032] Figure 3 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 2 ;

[0033] Figure 4 This is a cross-sectional view of the filter tank structure in this application;

[0034] Figure 5 This is a cross-sectional view of the tank structure processed in this application;

[0035] Figure 6 This is a structural diagram of the industrial dehumidifier used in this application.

[0036] In the picture:

[0037] 1. Gas storage tank; 2. Moisture absorption box; 3. Industrial dehumidifier; 4. Processing tank; 401. Dilute alkali silo; 402. Lime silo; 5. Filter tank; 6. Filter screen; 7. Divider plate; 8. Inlet pipe; 9. Outlet pipe; 10. First L-shaped pipe; 11. Second L-shaped pipe; 12. Stirring shaft; 13. Stirring blade; 14. Power shaft; 15. Power gear; 16. Transmission gear; 17. Motor; 18. Mounting base; 19. Discharge pipe; 20. First solenoid valve; 21. Metering pump; 22. Connecting pipe; 23. Second solenoid valve; 24. Mounting frame; 25. Moisture absorption block; 26. Screw shaft; 27. Screw blade; 28. Motor; 29. ​​Slag discharge cover. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Please see Figure 1 , Figure 2 and Figure 5 This embodiment describes a device for recovering non-condensable vapors generated from the cracking of waste mineral oil. It includes a gas storage tank 1, a moisture absorption box 2, an industrial dehumidifier 3, a processing tank 4, and a filter tank 5. A filter screen 6 is fixedly connected to the inner top and bottom walls of the filter tank 5. A partition plate 7 is fixedly connected between the inner top and bottom walls of the processing tank 4. One side of the partition plate 7 is a dilute alkali tank 401, and the other side is a lime tank 402. The filter screen 6 effectively filters impurities, preventing them from entering the dilute alkali tank 401 and mixing with the dilute alkali solution, thus preventing impurities from affecting the efficiency of subsequent chemical reactions and reducing... To mitigate the risk of pipe blockage and ensure the long-term stable operation of the treatment system, the filter screen 6 has an arc-shaped cross-section. The top of the filter tank 5 is rotatably connected to an auger shaft 26 concentric with the filter screen 6. The outer surface of the auger shaft 26 is fixedly connected to auger plates 27, and the edges of the auger plates 27 are in close contact with the surface of the filter screen 6. A motor 28 is installed on the top of the filter tank 5, and the output end of the motor 28 is fixedly connected to the top of the auger shaft 26, which can spirally transport the solid impurities intercepted by the filter screen 6 to the slag discharge port. The bottom of the filter tank 5 is threadedly sealed with a slag discharge cover 29, which facilitates regular cleaning of the slag accumulated at the bottom of the filter tank 5.

[0040] Please see Figure 1 , Figure 2 and Figure 4 The filter screen 6 is provided with an input pipe 8 and an output pipe 9 on both sides. The input pipe 8 is connected to the external non-condensable gas conveying equipment. Both the input pipe 8 and the output pipe 9 are fixedly connected to the filter tank 5. The other end of the output pipe 9 is fixedly connected to a first L-shaped pipe 10. The first L-shaped pipe 10 is fixedly connected to the treatment tank 4. The other end of the first L-shaped pipe 10 extends to the bottom of the dilute alkali tank 401. The top of one side of the partition plate 7 is fixedly connected to a second L-shaped pipe 11. The other end of the second L-shaped pipe 11 extends to the bottom of the lime tank 402. The lime tank 402 is filled with lime water. By utilizing the gas rising characteristics, a countercurrent contact is formed, which prolongs the reaction time between the gas and the lime water and significantly improves the neutralization efficiency of acidic gas.

[0041] Please see Figure 1 , Figure 2 and Figure 5A stirring shaft 12 is rotatably connected between the inner top and bottom walls of both the dilute alkali tank 401 and the lime tank 402. Stirring blades 13 are fixedly connected to the outer surfaces of both stirring shafts 12. The arrangement of the stirring shafts 12 and stirring blades 13 prevents lime water from settling and stratifying. A power shaft 14 is rotatably connected to the top of the treatment tank 4. A power gear 15 is fixedly connected to the outer surface of the power shaft 14. Transmission gears 16 are fixedly connected to the tops of both stirring shafts 12. The power gear 15 meshes with the two transmission gears 16. A motor 17 is installed above the treatment tank 4. A fixed base 18 is fixedly connected to the outer surface of the motor 17. The bottom end of the fixed base 18 is fixedly connected to the top of the treatment tank 4. The output end of the motor 17 is fixedly connected to the top of the power shaft 14. This arrangement provides a stable and reliable rotational power source for the treatment tank 4. Simultaneously, the fixed base 18 ensures the stability of the motor 17's operation. The arrangement of the power gear 15 and transmission gears 16 enables a single motor 17 to synchronously drive the dual stirring system, simplifying the transmission structure and reducing equipment energy consumption.

[0042] Please see Figure 1 , Figure 2 and Figure 3 Both lime silo 402 and dilute alkali silo 401 have a fixed discharge pipe 19 connected to their bottom circumference. A first solenoid valve 20 is installed at the middle of each of the two discharge pipes 19. A metering pump 21 is installed at the top of the circumference of both lime silo 402 and dilute alkali silo 401. The output ends of the two metering pumps 21 extend into lime silo 402 and dilute alkali silo 401 and are fixedly connected. The input ends of the two metering pumps 21 are fixedly connected to a connecting pipe 22. The other ends of the two connecting pipes 22 are fixedly connected to the external lime water and dilute alkali water storage containers, respectively. A second solenoid valve 23 is installed at the middle of each of the two connecting pipes 22. Through the above settings, the lime water and dilute alkali solution can be automatically replaced periodically, reducing the labor intensity of workers.

[0043] Please see Figure 1 , Figure 2 and Figure 6 One end of the input of the industrial dehumidifier 3 is located at the top of the treatment tank 4. The input of the industrial dehumidifier 3 is fixedly connected to the lime silo 402, and the neutralized gas is directly introduced into the industrial dehumidifier 3 to achieve the purpose of dehumidifying the gas. The upper surface of the moisture absorption box 2 is slidably inserted with a mounting frame 24 in the middle. Moisture absorption blocks 25 are installed between the inner walls of the mounting frame 24. The moisture absorption blocks 25 are made of activated carbon material, which is existing technology and will not be described in detail here. The output of the industrial dehumidifier 3 is fixedly connected to one side of the moisture absorption box 2. The other side of the moisture absorption box 2 is fixedly connected to the gas storage tank 1 through a pipeline. Through the pre-dehumidification of the industrial dehumidifier 3, the replacement frequency of the moisture absorption blocks 25 can be effectively reduced. Through the double dehumidification of the moisture absorption blocks 25, the top of the mounting frame 24 is fixedly connected to the upper surface of the moisture absorption box 2 by bolts, so as to achieve quick disassembly and assembly, and facilitate the regular replacement of the moisture absorption blocks 25.

[0044] The working principle of the above embodiment is as follows: Non-condensable gas enters the filter tank 5 through the input pipe 8 and first comes into contact with the arc-shaped filter screen 6. The filter screen 6 intercepts solid particles, coke, and other impurities entrained in the gas, preventing them from entering subsequent processing stages. The motor 28 at the top of the filter tank 5 drives the auger shaft 26 to rotate, and the auger blades 27 spirally advance along the surface of the filter screen 6, conveying the intercepted impurities to the bottom of the filter tank 5. The threaded seal slag discharge cover 29 is opened periodically to thoroughly remove the accumulated solid impurities, ensuring that the filter screen 6 continues to work efficiently. The filtered gas enters the treatment tank through the output pipe 9 and the first L-shaped pipe 10. At the bottom of the dilute alkali tank 401, the gas is in full contact with the dilute alkali solution. The dilute alkali solution absorbs some of the acidic gases such as hydrogen sulfide (H2S) and sulfur dioxide (SO2) in the gas, completing the initial neutralization reaction. The gas after initial treatment enters the bottom of the lime tank 402 through the second L-shaped pipe 11. The lime water filled in the lime tank 402 forms a countercurrent contact with the gas: the gas rises from bottom to top, and the lime water flows downward due to gravity, prolonging the reaction time, fully neutralizing the residual acidic components, and improving the purification efficiency. The motor 17 at the top of the treatment tank 4 drives the power gear 15 to rotate through the power shaft 14. 5 synchronously drives two transmission gears 16 to rotate, which in turn drives the stirring shafts 12 in the dilute alkali tank 401 and lime tank 402 to rotate. The stirring blades 13 continuously stir the reaction liquid to prevent the lime water from separating due to sedimentation and ensure the uniformity of the reaction liquid. When the dilute alkali solution or lime water needs to be replaced, the first solenoid valve 20 on the discharge pipe 19 is opened, and the waste liquid is automatically discharged. The metering pump 21 draws fresh solution from the external storage container through the connecting pipe 22. After the second solenoid valve 23 is opened, the solution is quantitatively injected into the corresponding tank, realizing periodic replacement without human intervention. The neutralized gas is discharged from the top of the treatment tank 4. The gas enters the industrial dehumidifier 3, where it initially removes moisture. Then, the gas flows into the moisture absorption box 2, where it comes into contact with the activated carbon moisture-absorbing block 25 inside the mounting frame 24, further adsorbing residual moisture. The activated carbon moisture-absorbing block 25 is quickly installed and removed via the bolted mounting frame 24, facilitating regular replacement. The neutralized gas then enters the industrial dehumidifier 3 from the top of the treatment tank 4, where it initially removes moisture. The gas then flows into the moisture absorption box 2, where it comes into contact with the activated carbon moisture-absorbing block 25 inside the mounting frame 24, further adsorbing residual moisture. The activated carbon moisture-absorbing block 25 is quickly installed and removed via the bolted mounting frame 24, facilitating regular replacement.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for recovering non-condensable vapors generated from the cracking of waste mineral oil, comprising a gas storage tank (1), a moisture absorption box (2), an industrial dehumidifier (3), a processing tank (4), and a filter tank (5), characterized in that: The filter tank (5) has a filter screen (6) fixedly connected to its inner top wall and inner bottom wall. The treatment tank (4) has a partition plate (7) fixedly connected between its inner top wall and inner bottom wall. One side of the partition plate (7) is a dilute alkali silo (401), and the other side of the partition plate (7) is a lime silo (402). The filter screen (6) is provided with an input pipe (8) and an output pipe (9) on both sides. The input pipe (8) and the output pipe (9) are fixedly connected to the filter tank (5). The other end of the output pipe (9) is fixedly connected to a first L-shaped pipe (10). The first L-shaped pipe (10) is fixedly connected to the treatment tank (4). The other end of the first L-shaped pipe (10) extends to the bottom of the dilute alkali tank (401). The top of one side of the partition plate (7) is fixedly connected to a second L-shaped pipe (11). The other end of the second L-shaped pipe (11) extends to the bottom of the lime tank (402).

2. The device for recovering non-condensable vapors generated by the cracking of waste mineral oil according to claim 1, characterized in that: The inner top wall and inner bottom wall of the dilute alkali silo (401) and lime silo (402) are rotatably connected to a stirring shaft (12), and stirring blades (13) are fixedly connected to the outer surface of the two stirring shafts (12).

3. The waste mineral oil pyrolysis non-condensable vapor recovery device according to claim 2, characterized in that: The top of the processing tank (4) is rotatably connected to a power shaft (14), and a power gear (15) is fixedly connected to the outer surface of the power shaft (14). The tops of the two stirring shafts (12) are fixedly connected to transmission gears (16), and the power gear (15) meshes with the two transmission gears (16).

4. The waste mineral oil pyrolysis non-condensable vapor recovery device according to claim 3, characterized in that: A motor (17) is provided above the processing tank (4). A fixed base (18) is fixedly connected to the outer surface of the motor (17). The bottom end of the fixed base (18) is fixedly connected to the top end of the processing tank (4). The output end of the motor (17) is fixedly connected to the top end of the power shaft (14).

5. The device for recovering non-condensable vapors generated by waste mineral oil pyrolysis according to claim 1, characterized in that: The bottom circumferential surfaces of the lime silo (402) and the dilute alkali silo (401) are both fixedly connected to discharge pipes (19). The middle ends of the two discharge pipes (19) are each equipped with a first solenoid valve (20). The top of the circumferential surfaces of the lime silo (402) and the dilute alkali silo (401) are each equipped with a metering pump (21). The output ends of the two metering pumps (21) extend into the lime silo (402) and the dilute alkali silo (401) and are fixedly connected. The input ends of the two metering pumps (21) are both fixedly connected to connecting pipes (22). The other ends of the two connecting pipes (22) are respectively fixedly connected to the external lime water and dilute alkali water storage containers. The middle ends of the two connecting pipes (22) are each equipped with a second solenoid valve (23).

6. The device for recovering non-condensable vapors generated by the cracking of waste mineral oil according to claim 1, characterized in that: One end of the input terminal of the industrial dehumidifier (3) is located at the top of the treatment tank (4), and the input terminal of the industrial dehumidifier (3) is fixedly connected to the lime silo (402).

7. The device for recovering non-condensable vapors generated by waste mineral oil pyrolysis according to claim 6, characterized in that: The upper surface of the moisture-absorbing box (2) is slidably connected to the middle of the upper surface of the box (2). A moisture-absorbing block (25) is installed between the inner walls of the mounting frame (24). The output end of the industrial dehumidifier (3) is fixedly connected to one side of the moisture-absorbing box (2), and the other side of the moisture-absorbing box (2) is fixedly connected to the air storage tank (1) through a pipeline.

8. The waste mineral oil pyrolysis non-condensable vapor recovery device according to claim 7, characterized in that: The top of the mounting frame (24) is fixedly connected to the upper surface of the moisture-absorbing box (2) by bolts.

9. The device for recovering non-condensable vapors generated by the cracking of waste mineral oil according to claim 1, characterized in that: The filter screen (6) has an arc-shaped cross-section. The top of the filter tank (5) is rotatably connected to an auger shaft (26) concentric with the filter screen (6). The outer surface of the auger shaft (26) is fixedly connected to an auger plate (27). The edge of the auger plate (27) is in close contact with the surface of the filter screen (6). A motor (28) is installed on the top of the filter tank (5). The output end of the motor (28) is fixedly connected to the top of the auger shaft (26).

10. A waste mineral oil pyrolysis non-condensable vapor recovery device according to claim 9, characterized in that: The bottom of the filter tank (5) is threadedly sealed with a slag discharge cover (29).

Images