Magnetization pyrolysis treatment system and method for oily sludge treatment

Abstract

The invention discloses a magnetization pyrolysis treatment system and method for oily sludge treatment. The system comprises a sludge magnetization mechanism, a sludge pyrolysis mechanism and a condensation recovery mechanism which are connected in sequence, the sludge magnetizing mechanism comprises a horizontally arranged sludge magnetizing circulating pipe, a magnetizing supporting pipe is arranged on the periphery of the sludge magnetizing circulating pipe, and a plurality of sludge magnetizing permanent magnets are arranged on the inner side of the magnetizing supporting pipe; the sludge pyrolysis mechanism comprises a sludge pyrolysis supporting shell, a sludge pyrolysis barrel shell is rotationally connected into the sludge pyrolysis supporting shell, a pyrolysis collection input shell is arranged on the side face of the sludge pyrolysis barrel shell, and the side, close to the sludge pyrolysis barrel shell, of the pyrolysis collection input shell is an opening side; a sludge laying output groove is formed in the top of the pyrolysis collection input shell; the system has efficient oil sludge separation performance, can effectively separate oil, water and solid impurities in the oil-containing sludge, magnetizes the oil-containing sludge under the action of a magnetic field, and can change the surface properties of oil drops in the oil-containing sludge, so that the oil drops are more easily gathered and separated.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a magnetic pyrolysis treatment system and method for treating oily sludge. Background Art

[0002] In the process of industrial production, sludge containing oil substances is generated, which is called oily sludge. Due to the presence of oil substances in oily sludge, direct discharge will cause serious environmental pollution and energy waste. Therefore, pyrolysis treatment equipment is currently used to treat oily sludge to obtain useful liquid oil and gaseous hydrocarbons, while reducing the emission of harmful substances.

[0003] The current pyrolysis treatment equipment for oily sludge still has the problems of low treatment efficiency and poor adaptability to the state of oily sludge during treatment, which needs further improvement and optimization. Summary of the invention

[0004] The object of the present invention is to provide a magnetic pyrolysis treatment system and method for treating oily sludge, which can perform pyrolysis on oily sludge more efficiently.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A magnetization pyrolysis treatment system for oily sludge treatment, comprising a sludge magnetization mechanism, a sludge pyrolysis mechanism and a condensation recovery mechanism which are sequentially connected;

[0007] The sludge magnetization mechanism comprises a horizontally arranged sludge magnetization flow pipe, a magnetization support pipe coaxially arranged therewith is arranged at the periphery of the sludge magnetization flow pipe, and a plurality of sludge magnetization permanent magnets are arranged inside the magnetization support pipe;

[0008] The sludge pyrolysis mechanism comprises a sludge pyrolysis support shell, a horizontally arranged sludge pyrolysis shell is rotatably connected inside the sludge pyrolysis support shell, a pyrolysis collection input shell extending in a direction parallel to the axis of the sludge pyrolysis shell is provided on the side of the sludge pyrolysis shell, a side of the pyrolysis collection input shell close to the sludge pyrolysis shell is an open side, and the open side of the pyrolysis collection input shell is in close contact with the outer side of the sludge pyrolysis shell;

[0009] The top of the pyrolysis collection input shell near the opening side is provided with a sludge laying output trough;

[0010] A pyrolysis support arc plate extending in a direction parallel to the axis of the sludge pyrolysis cylinder shell is fixed inside the pyrolysis support arc plate, and a plurality of electromagnetic induction heaters are fixed on the top of the pyrolysis support arc plate;

[0011] Above the sludge pyrolysis cylinder shell within the sludge pyrolysis support housing, a hollow oil and gas separation and discharge housing is fixed. The lower side of the oil and gas separation and discharge housing has a plurality of oil and gas separation flow holes communicating with its interior. At the top of the oil and gas separation and discharge housing, an oil and gas separation discharge pipe communicating with its interior is fixed.

[0012] The condensation recovery mechanism includes a condensation recovery storage tank. Inside the condensation recovery storage tank, a condensation recovery flow pipe extending spirally in the vertical direction is fixed. The upper end of the condensation recovery flow pipe is connected and communicated with the oil and gas separation discharge pipe. At the bottom of the condensation recovery storage tank, a condensation recovery temporary storage housing connected and communicated with the lower end of the condensation recovery flow pipe is fixed.

[0013] Outside the condensation recovery storage tank, a main coolant input pipe and a main coolant output pipe communicating with its interior are fixed.

[0014] Preferably, a screw extruder is connected to the input end of the sludge magnetization flow pipe, and the output end of the screw extruder is connected and communicated with the sludge magnetization flow pipe.

[0015] The input end of the screw extruder is connected and communicated with an oily sludge storage tank through a sludge magnetization input pipe.

[0016] Note: During the process of the oily sludge flowing and being magnetized in the sludge magnetization flow pipe, a slow and stable flow is required. The screw extruder can provide a stable and uniform driving force for the flow of the oily sludge.

[0017] Preferably, a magnetized sludge storage tank is connected and communicated with the output end of the sludge magnetization flow pipe. Inside the magnetized sludge storage tank, a magnetized sludge transfer pump is fixed.

[0018] Outside the pyrolysis collection input housing, a plurality of pyrolysis collection input pipes communicating with its interior are fixed. The output end of the magnetized sludge transfer pump is connected and communicated with the pyrolysis collection input pipes.

[0019] Note: The magnetized oily sludge after magnetization treatment is discharged from the sludge magnetization flow pipe and enters the magnetized sludge storage tank for temporary storage.

[0020] Preferably, the sludge magnetization permanent magnet is connected to the magnetization support pipe through a magnetization array control structure. On the side wall of the magnetization support pipe, there are a plurality of array connection holes penetrating radially along it. The magnetization array control structure includes an array control fixing cylinder fixed in the array connection hole and extending radially along the magnetization support pipe with an inward opening. Inside the array control fixing cylinder, an array control sliding cylinder with an outward opening is slidably connected. A plurality of sludge magnetization permanent magnets are respectively fixed at one end of the array control sliding cylinder inside the magnetization support pipe.

[0021] Inside the array control fixing cylinder, an array control driving rod for driving the array control sliding cylinder to move is provided.

[0022] A plurality of sludge magnetization permanent magnets arranged circumferentially around the same cross-section of the magnetization support tube form a group. Each group of sludge magnetization permanent magnets forms an annular structure around the circumference of the magnetization support tube, and multiple groups of annular structures of sludge magnetization permanent magnets are arranged along the axial direction of the magnetization support tube.

[0023] Note: The magnetization array control structure is used to control the positions of the individual sludge magnetization permanent magnets, thereby controlling the magnetic field strength and direction at the sludge magnetization flow tube. Each sludge magnetization permanent magnet can be independently controlled to adjust the relative position between each sludge magnetization permanent magnet and the sludge magnetization flow tube according to actual requirements.

[0024] Preferably, a sludge pyrolysis recovery scraper is provided on the side of the sludge pyrolysis cylinder shell away from the pyrolysis collection input shell. The sludge pyrolysis recovery scraper includes a recovery scraper main body and a recovery scraper blade edge, and the recovery scraper blade edge is in top-pressure contact fit with the outer side surface of the sludge pyrolysis cylinder shell;

[0025] The recovery scraper main body extends along a direction parallel to the axis of the sludge pyrolysis cylinder shell, and both ends of the recovery scraper main body are fixedly connected to the inner side wall of the sludge pyrolysis support housing;

[0026] A sludge recovery receiving pool with an upward opening is provided in the sludge pyrolysis support housing below the sludge pyrolysis recovery scraper.

[0027] Note: After pyrolysis, the oil-containing sludge forms sludge residues. Under the scraping action of the sludge pyrolysis recovery scraper, the sludge residues are peeled off from the outer surface of the sludge pyrolysis cylinder shell, and the sludge residues slide down along the upper side surface of the sludge pyrolysis recovery scraper to the sludge recovery receiving pool for centralized storage.

[0028] Preferably, a thickness control mechanism is provided at the top of the pyrolysis collection input shell. The thickness control mechanism includes a thickness control scraper slidably connected to the top of the pyrolysis collection input shell;

[0029] A back support plate extending along a direction parallel to the axis of the sludge pyrolysis cylinder shell is fixed in the sludge pyrolysis support housing. A thickness control fixed cylinder extending radially along the sludge pyrolysis cylinder shell is fixed on the back support plate. The opening end of the thickness control fixed cylinder faces the side of the sludge pyrolysis cylinder shell. A thickness control sliding cylinder is slidably connected in the thickness control fixed cylinder, and the thickness control scraper is fixedly connected to the outer end of the thickness control sliding cylinder;

[0030] A thickness control driving rod for driving the movement of the thickness control sliding cylinder is provided in the thickness control fixed cylinder.

[0031] Note: By adjusting the distance between the side of the thickness control scraper close to the sludge pyrolysis cylinder shell and the outer surface of the sludge pyrolysis cylinder shell, the thickness of the oil-containing sludge discharged from the sludge laying output groove and coated on the outer surface of the sludge pyrolysis cylinder shell can be adjusted.

[0032] Preferably, a texture control mechanism is provided above the thickness control squeegee. The texture control mechanism includes a texture control squeegee slidably connected to the top of the thickness control squeegee. A texture control fixed cylinder arranged parallel to the thickness control fixed cylinder is fixed on the back support plate. The opening end of the texture control fixed cylinder faces the side of the sludge pyrolysis cylinder shell. A texture control sliding cylinder is slidably connected in the texture control fixed cylinder, and the texture control squeegee is fixedly connected to the outer end of the texture control sliding cylinder;

[0033] The side of the texture control squeegee close to the sludge pyrolysis cylinder shell has a plurality of texture flow channels;

[0034] A texture control driving rod for driving the texture control sliding cylinder to move is provided in the texture control fixed cylinder.

[0035] Note: The oily sludge discharged from the sludge laying output groove and coated on the outer surface of the sludge pyrolysis cylinder shell can only pass through the texture flow channels on the side of the texture control squeegee. By replacing texture control squeegees of various specifications, the shape of the oily sludge coated on the outer surface of the sludge pyrolysis cylinder shell can be adjusted.

[0036] Preferably, a sludge preheating temporary storage pool with an upward opening is provided in the sludge pyrolysis support housing below the sludge pyrolysis cylinder shell, and the lower side of the sludge pyrolysis cylinder shell extends into the sludge preheating temporary storage pool;

[0037] A preheated sludge delivery pump is provided in the sludge preheating temporary storage pool, and the output end of the preheated sludge delivery pump is connected to the pyrolysis collection input pipe through a pipeline;

[0038] The output end of the magnetized sludge delivery pump is connected to the sludge preheating temporary storage pool;

[0039] A preheated sludge squeegee is provided in the sludge preheating temporary storage pool. The preheated sludge squeegee includes a preheated squeegee main body and a preheated squeegee blade edge. The preheated squeegee blade edge is in pressing contact with the outer side surface of the sludge pyrolysis cylinder shell, and the preheated squeegee main body extends along the axis direction parallel to the sludge pyrolysis cylinder shell, and the end of the preheated squeegee main body is fixedly connected to the inner side wall of the sludge preheating temporary storage pool.

[0040] Note: The lower side of the sludge pyrolysis cylinder shell is immersed in the oily sludge to be pyrolyzed. The waste heat of the sludge pyrolysis cylinder shell is used to preheat the oily sludge, saving energy and improving the pyrolysis working efficiency at the same time.

[0041] Preferably, a heat exchange circulation mechanism is provided in the condensation recovery storage tank. The heat exchange circulation mechanism includes a circulation driving cylinder shell provided in the condensation recovery storage tank and having an upward opening, and a plurality of circulation driving plates are fixed on the outer side wall of the circulation driving cylinder shell;

[0042] A circulation drive shaft extending vertically is fixed at the bottom of the circulation drive cylinder shell, and a circulation drive housing is fixed at the bottom of the condensation recovery storage tank. The lower end of the circulation drive shaft extends into the interior of the circulation drive housing, and a circulation drive motor for driving the rotation of the circulation drive shaft is provided in the circulation drive housing;

[0043] An inner ring cooling input pipe and an inner ring cooling output pipe extending vertically are fixed at the top of the condensation recovery storage tank, and the lower ends of the inner ring cooling input pipe and the inner ring cooling output pipe both extend into the interior of the circulation drive cylinder shell.

[0044] Note: The heat exchange circulation mechanism is used to promote the circulation of the cooling water in the condensation recovery storage tank, so that the cooling water can come into more sufficient contact with the condensation recovery circulation pipe for heat exchange, and the cooling water in the circulation drive cylinder shell can play an auxiliary cooling role, keeping the cooling water in the condensation recovery storage tank at a lower temperature and making the heat exchange efficiency in the condensation recovery storage tank higher.

[0045] On the other hand, the present invention also provides a method for magnetizing and pyrolyzing oily sludge. Based on the above-mentioned magnetizing pyrolysis treatment system for treating oily sludge, it includes the following steps:

[0046] S1. Magnetization treatment of oily sludge:

[0047] The oily sludge to be treated is conveyed into the sludge magnetization flow pipe, and the oily sludge flows in the sludge magnetization flow pipe at a flow rate of 0.3 - 0.6 m / min;

[0048] The oily sludge is magnetized by multiple array - arranged sludge magnetization permanent magnets under the condition of a magnetic field intensity of 6000 gauss, and the magnetization treatment time is 5 - 10 min;

[0049] S2. Pyrolysis of oily sludge:

[0050] The magnetized oily sludge is conveyed into the pyrolysis collection input shell, and then a servo - motor fixed on the inner side wall of the sludge pyrolysis support housing drives the sludge pyrolysis cylinder shell to rotate counter - clockwise through a gear - ring transmission structure;

[0051] The oily sludge in the pyrolysis collection input shell is discharged from the sludge laying output groove and coated on the outer surface of the sludge pyrolysis cylinder shell. When the oily sludge continues to rotate with the sludge pyrolysis cylinder shell and passes through the electromagnetic induction heater, each electromagnetic induction heater heats the sludge pyrolysis cylinder shell by electromagnetic induction heating;

[0052] The heating temperature of the sludge pyrolysis cylinder shell is 500 °C, and the pyrolysis time of the oily sludge coated on the outer surface of the sludge pyrolysis cylinder shell on the sludge pyrolysis cylinder shell is 60 - 90 min;

[0053] There is a fan on the oil-gas separation and discharge pipe, and the input end of the fan is connected to the oil-gas separation and discharge pipe. Under the suction of the fan, the oil-gas generated by the pyrolysis of oily sludge enters the oil-gas separation and discharge shell through the oil-gas separation through-hole, and then is discharged through the oil-gas separation and discharge pipe;

[0054] S3. Oil-gas condensation and recovery treatment:

[0055] The oil-gas discharged from the oil-gas separation and discharge pipe enters from the upper end of the condensation and recovery flow pipe, and the oil-gas flows through the condensation and recovery flow pipe from top to bottom. The condensation and recovery storage tank is filled with cooling water, and the oil-gas in the condensation and recovery flow pipe is liquefied through heat exchange;

[0056] The liquefied oil-gas is discharged from the lower end of the condensation and recovery flow pipe and flows into the condensation and recovery temporary storage shell for temporary storage.

[0057] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0058] 1. The structure of the present invention is reasonably designed, with high-efficiency oil sludge separation performance. It can effectively separate oil, water, and solid impurities in the oily sludge. Under the action of the magnetic field, the oily sludge is magnetized, which can change the surface properties of the oil droplets in the oily sludge. The surface tension and wettability of the tiny oil droplets change, and the small oil droplets collide with each other and aggregate into large oil droplets, making it easier to aggregate and separate;

[0059] 2. The present invention is convenient to operate and has high-efficiency pyrolysis treatment performance. The pyrolysis process can achieve the deep decomposition of organic components in the oily sludge, and can decompose organic pollutants such as long-chain hydrocarbons and polycyclic aromatic hydrocarbons in the oil sludge into small-molecule combustible gases and liquids;

[0060] 3. The present invention has stable magnetization performance. Multiple sludge magnetization permanent magnets arranged in an array can provide a stable and uniform magnetic field, and the magnetic field intensity can be adaptively adjusted through the magnetization array control structure to adapt to the properties of the actual oily sludge;

[0061] 4. In the pyrolysis treatment of the present invention, according to the actual moisture content of the oily sludge, the thickness control mechanism is used to adjust the thickness of the oily sludge coated on the outer surface of the sludge pyrolysis cylinder shell to ensure that the oily sludge can be pyrolyzed more thoroughly;

[0062] 5. In the pyrolysis treatment of the present invention, the lower side of the sludge pyrolysis cylinder shell is immersed in the oily sludge to be pyrolyzed, and the waste heat of the sludge pyrolysis cylinder shell is used to preheat the oily sludge, which saves energy and improves the pyrolysis work efficiency at the same time;

[0063] 6. During the oil and gas recovery process of the present invention, the heat exchange circulation mechanism is utilized to promote the circulation of the cooling water in the condensation recovery storage tank, enabling the cooling water to come into more sufficient contact with the condensation recovery circulation pipe for heat exchange. Moreover, the cooling water in the circulation drive cylinder shell can play an auxiliary role in cooling, keeping the cooling water in the condensation recovery storage tank at a relatively low temperature and making the heat exchange efficiency in the condensation recovery storage tank higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 is the overall layout schematic diagram of the present invention;

[0065] Figure 2 is the structural schematic diagram of the sludge magnetization mechanism of the present invention;

[0066] Figure 3 is the structural schematic diagram of the magnetization array control structure of the present invention;

[0067] Figure 4 is the left view of the magnetization array control structure of the present invention;

[0068] Figure 5 is the structural schematic diagram of the sludge pyrolysis mechanism of the present invention;

[0069] Figure 6 is the structural schematic diagram of the thickness control mechanism of the present invention;

[0070] Figure 7 is the top view of the texture control scraper of the present invention;

[0071] Figure 8 is the structural schematic diagram of the condensation recovery mechanism of the present invention;

[0072] Figure 9 is Figure 8 the top view of.

[0073] In the figure, 10 is the sludge magnetization mechanism, 101 is the sludge magnetization input pipe, 102 is the oily sludge storage tank, 103 is the magnetized sludge storage tank, 104 is the magnetized sludge transfer pump, 11 is the sludge magnetization circulation pipe, 12 is the magnetization support pipe, 13 is the sludge magnetization permanent magnet, 14 is the screw extruder, 15 is the magnetization array control structure, 150 is the array connection hole, 151 is the array control fixed cylinder, 152 is the array control sliding cylinder, 153 is the array control drive rod, 20 is the sludge pyrolysis mechanism, 201 is the sludge pyrolysis support housing, 202 is the rear support plate, 21 is the sludge pyrolysis cylinder shell, 22 is the pyrolysis collection input shell, 220 is the pyrolysis collection input pipe, 221 is the sludge laying output groove, 23 is the pyrolysis support arc plate, 231 is the electromagnetic induction heater, 24 is the oil-gas separation and external discharge shell, 240 is the oil-gas separation circulation hole, 241 is the oil-gas separation external discharge pipe, 25 is the sludge pyrolysis recovery scraper, 251 is the recovery scraper main body, 252 is the recovery scraper cutting edge, 253 is the sludge recovery receiving pool, 26 is the thickness control mechanism, 261 is the thickness control scraper, 262 is the thickness control fixed cylinder, 263 is the thickness control sliding cylinder, 264 is the thickness control drive rod, 27 is the texture control mechanism, 271 is the texture control scraper, 2710 is the texture circulation groove, 272 is the texture control fixed cylinder, 273 is the texture control sliding cylinder, 274 is the texture control drive rod, 28 is the sludge preheating and temporary storage pool, 281 is the preheated sludge transfer pump, 282 is the preheated sludge scraper, 2821 is the preheated scraper main body, 2822 is the preheated scraper cutting edge, 30 is the condensation recovery mechanism, 31 is the condensation recovery receiving tank, 311 is the main coolant input pipe, 312 is the main coolant output pipe, 32 is the condensation recovery circulation pipe, 33 is the condensation recovery temporary storage shell, 34 is the heat exchange circulation mechanism, 341 is the circulation drive cylinder shell, 342 is the circulation drive plate, 343 is the circulation drive shaft, 344 is the circulation drive receiving shell, 345 is the circulation drive motor, 346 is the inner ring cooling input pipe, 347 is the inner ring cooling output pipe. Detailed implementation mode

[0074] The following combines Figures 1 to 9 to describe the present invention in detail. For the convenience of narration, the following directions are defined as follows: The up, down, left, right, front, and back directions mentioned below are consistent with the up, down, left, right, front, and back directions of the projection relationship of each main view or structural schematic diagram itself.

[0075] Example 1: A magnetization pyrolysis treatment system for treating oily sludge, as Figure 1 shown, includes a sludge magnetization mechanism 10, a sludge pyrolysis mechanism 20, and a condensation recovery mechanism 30 that are connected in sequence;

[0076] As Figure 2As shown, the sludge magnetization mechanism 10 includes a horizontally arranged sludge magnetization flow pipe 11. An axially co-arranged magnetization support pipe 12 is provided outside the sludge magnetization flow pipe 11, and a plurality of sludge magnetization permanent magnets 13 are provided inside the magnetization support pipe 12;

[0077] The sludge magnetization permanent magnet 13 is a prior art. For example, an existing neodymium iron boron permanent magnet can be used;

[0078] As Figure 5 As shown, the sludge pyrolysis mechanism 20 includes a sludge pyrolysis support outer shell 201. A horizontally arranged sludge pyrolysis cylinder shell 21 is rotatably connected inside the sludge pyrolysis support outer shell 201. A pyrolysis collection input shell 22 extending along the direction parallel to its axis is provided on the side of the sludge pyrolysis cylinder shell 21. The side of the pyrolysis collection input shell 22 close to the sludge pyrolysis cylinder shell 21 is the open side, and the open side of the pyrolysis collection input shell 22 is in airtight contact and cooperation with the outer side surface of the sludge pyrolysis cylinder shell 21;

[0079] Both ends of the pyrolysis collection input shell 22 are fixedly connected to the inner side wall of the sludge pyrolysis support outer shell 201;

[0080] As Figure 6 As shown, the top of the pyrolysis collection input shell 22 near the open side has a sludge laying output groove 221;

[0081] As Figure 5 As shown, a pyrolysis support arc plate 23 extending along the direction parallel to its axis is fixed inside the sludge pyrolysis cylinder shell 21, and a plurality of electromagnetic induction heaters 231 are fixed on the top of the pyrolysis support arc plate 23;

[0082] Both ends of the pyrolysis support arc plate 23 are fixedly connected to the inner side wall of the sludge pyrolysis support outer shell 201;

[0083] The sludge pyrolysis cylinder shell 21 is driven to rotate by a servo motor of the prior art fixed on the inner side wall of the sludge pyrolysis support outer shell 201 through a gear and ring gear transmission structure;

[0084] As Figure 5 As shown, a hollow oil and gas separation and outer discharge shell 24 is fixed inside the sludge pyrolysis support outer shell 201 above the sludge pyrolysis cylinder shell 21. A plurality of oil and gas separation flow holes 240 communicating with its interior are provided on the lower side of the oil and gas separation and outer discharge shell 24. An oil and gas separation and outer discharge pipe 241 communicating with its interior is fixed on the top of the oil and gas separation and outer discharge shell 24, and the oil and gas separation and outer discharge pipe 241 extends to the outside of the sludge pyrolysis support outer shell 201;

[0085] As Figure 8As shown in the figure, the condensation recovery mechanism 30 includes a condensation recovery storage tank 31. Inside the condensation recovery storage tank 31, a condensation recovery flow pipe 32 that spirally extends in the vertical direction is fixed. The upper end of the condensation recovery flow pipe 32 is communicated with the oil-gas separation and discharge pipe 241. At the bottom of the condensation recovery storage tank 31, a condensation recovery temporary storage shell 33 that is communicated with the lower end of the condensation recovery flow pipe 32 is fixed.

[0086] Outside the condensation recovery storage tank 31, a main coolant input pipe 311 and a main coolant output pipe 312 that are communicated with its interior are fixed.

[0087] Embodiment 2: This embodiment describes an oil-containing sludge magnetization pyrolysis treatment method. Based on the magnetization pyrolysis treatment system for oil-containing sludge in Embodiment 1, it includes the following steps:

[0088] S1. Magnetization treatment of oil-containing sludge:

[0089] The oil-containing sludge to be treated is conveyed into the sludge magnetization flow pipe 11, and the oil-containing sludge flows through the sludge magnetization flow pipe 11 at a flow rate of 0.3 m / min.

[0090] The oil-containing sludge is magnetized by multiple arrayed sludge magnetization permanent magnets 13 under the condition of a magnetic field intensity of 6000 gauss, and the magnetization treatment time is 10 min.

[0091] S2. Pyrolysis of oil-containing sludge:

[0092] The magnetized oil-containing sludge is conveyed into the pyrolysis collection input shell 22, and then the servo motor fixed on the inner side wall of the sludge pyrolysis support outer shell 201 drives the sludge pyrolysis cylinder shell 21 to rotate counterclockwise through the gear and gear ring transmission structure.

[0093] The oil-containing sludge in the pyrolysis collection input shell 22 is discharged from the sludge laying output groove 221 and coated on the outer surface of the sludge pyrolysis cylinder shell 21. When the oil-containing sludge continues to rotate with the sludge pyrolysis cylinder shell 21 and passes through the electromagnetic induction heater 231, each electromagnetic induction heater 231 heats the sludge pyrolysis cylinder shell 21 through electromagnetic induction heating.

[0094] The heating temperature of the sludge pyrolysis cylinder shell 21 is 500 °C, and the time for the oil-containing sludge coated on the outer surface of the sludge pyrolysis cylinder shell 21 to be pyrolyzed on the sludge pyrolysis cylinder shell 21 is 90 min.

[0095] The oil-gas separation and discharge pipe 241 is equipped with a fan, and the input end of the fan is communicated with the oil-gas separation and discharge pipe 241. Under the suction of the fan, the oil and gas generated by the pyrolysis of the oil-containing sludge enter the oil-gas separation outer shell 24 through the oil-gas separation through hole 240 and are then discharged through the oil-gas separation and discharge pipe 241.

[0096] S3. Oil and gas condensation recovery treatment:

[0097] The oil and gas discharged from the oil and gas separation exhaust pipe 241 enters from the upper end of the condensation recovery flow pipe 32. The oil and gas flows through the condensation recovery flow pipe 32 from top to bottom. The condensation recovery storage tank 31 is filled with cooling water, and the oil and gas in the condensation recovery flow pipe 32 is liquefied through heat exchange.

[0098] The liquefied oil and gas is discharged from the lower end of the condensation recovery flow pipe 32 and flows into the condensation recovery temporary storage shell 33 for temporary storage.

[0099] A delivery pump of the existing technology is used to transport cooling water into the condensation recovery storage tank 31 through the main coolant input pipe 311. At the same time, an equal amount of cooling water is discharged from the main coolant output pipe 312. In this way, the cooling water is circulated and transported into the condensation recovery storage tank 31 for heat exchange with the oil and gas in the condensation recovery flow pipe 32.

[0100] Example 3: On the basis of Example 1, as Figure 2 shown, a screw extruder 14 is connected to the input end of the sludge magnetization flow pipe 11, and the output end of the screw extruder 14 is connected and communicated with the sludge magnetization flow pipe 11.

[0101] The input end of the screw extruder 14 is connected and communicated with an oily sludge storage tank 102 through a sludge magnetization input pipe 101.

[0102] As Figure 2 shown, the output end of the sludge magnetization flow pipe 11 is connected and communicated with a magnetized sludge storage tank 103. A magnetized sludge delivery pump 104 is fixed in the magnetized sludge storage tank 103. The magnetized sludge delivery pump 104 is a screw pump of the existing technology.

[0103] A plurality of pyrolysis collection input pipes 220 connected to the inside are fixed on the outside of the pyrolysis collection input shell 22. The output end of the magnetized sludge delivery pump 104 is connected and communicated with the pyrolysis collection input pipe 220.

[0104] Example 4: This example describes a method for magnetizing and pyrolyzing oily sludge. Based on the magnetizing and pyrolyzing treatment system for oily sludge in Example 3, the difference from Example 2 is that;

[0105] In step S1, the oily sludge to be treated is stored in the oily sludge storage tank 102. The oily sludge in the oily sludge storage tank 102 is transported to the input end of the screw extruder 14 through the sludge magnetization input pipe 101. Under the extrusion and transportation action of the screw extruder 14, the oily sludge is discharged from the output end of the screw extruder 14 and enters the sludge magnetization flow pipe 11 for circulation.

[0106] The oil-containing sludge after magnetization treatment is discharged from the sludge magnetization flow pipe 11 and enters the magnetization sludge storage tank 103 for temporary storage.

[0107] Example 5: On the basis of Example 3, as Figure 2 shown, the sludge magnetization permanent magnet 13 is connected to the magnetization support pipe 12 through the magnetization array control structure 15. There are a plurality of array connection holes 150 penetrating radially along the side wall of the magnetization support pipe 12. As Figure 3 shown, the magnetization array control structure 15 includes an array control fixed cylinder 151 fixed in the array connection hole 150 and extending radially along the magnetization support pipe 12 with an opening facing inwards. An array control sliding cylinder 152 with an opening facing outwards is slidably connected inside the array control fixed cylinder 151. A plurality of sludge magnetization permanent magnets 13 are fixedly arranged at one end of the array control sliding cylinder 152 inside the magnetization support pipe 12 in a one-to-one correspondence;

[0108] An array control driving rod 153 for driving the array control sliding cylinder 152 to move is arranged inside the array control fixed cylinder 151. The array control driving rod 153 is an electric control telescopic rod driven by a servo motor in the prior art. The outer rod end of the array control driving rod 153 is fixedly connected to the inner end of the array control fixed cylinder 151, and the inner rod end of the array control driving rod 153 is fixedly connected to the inner end of the array control sliding cylinder 152;

[0109] As Figure 4 shown, a plurality of sludge magnetization permanent magnets 13 arranged circumferentially around the same cross-section of the magnetization support pipe 12 are in a group. Each group of sludge magnetization permanent magnets 13 forms an annular structure around the circumference of the magnetization support pipe 12, and multiple groups of annular-structured sludge magnetization permanent magnets 13 are arranged along the axial direction of the magnetization support pipe 12.

[0110] Example 6: This example describes a method for magnetizing and pyrolyzing oil-containing sludge. Based on the magnetizing and pyrolyzing treatment system for oil-containing sludge in Example 5, the difference from Example 4 is that;

[0111] In step S1, the positions of the respective sludge magnetization permanent magnets 13 are controlled through the magnetization array control structure 15, thereby controlling the magnetic field strength and magnetic field direction at the sludge magnetization flow pipe 11;

[0112] The array control driving rod 153 drives the array control sliding cylinder 152 together with the sludge magnetization permanent magnet 13 to move radially along the magnetization support pipe 12. When the inner rod of the array control driving rod 153 extends, it drives the sludge magnetization permanent magnet 13 closer to the sludge magnetization flow pipe 11. When the inner rod of the array control driving rod 153 retracts, it drives the sludge magnetization permanent magnet 13 away from the sludge magnetization flow pipe 11;

[0113] A plurality of sludge magnetization permanent magnets 13 in the same group are further divided into group A and group B in a form of one interval apart, controlling each sludge magnetization permanent magnet 13 in group A to be close to the sludge magnetization flow pipe 11, and controlling each sludge magnetization permanent magnet 13 in group B to be far from the sludge magnetization flow pipe 11;

[0114] Each sludge magnetization permanent magnet 13 can be independently controlled to adjust the relative position between each sludge magnetization permanent magnet 13 and the sludge magnetization flow pipe 11 according to actual needs.

[0115] Example 7: On the basis of Example 5, as Figure 5 shown, a sludge pyrolysis recovery scraper 25 is provided on one side of the sludge pyrolysis cylinder shell 21 away from the pyrolysis collection input shell 22. The sludge pyrolysis recovery scraper 25 includes a recovery scraper main body 251 and a recovery scraper blade 252, and the recovery scraper blade 252 is in top pressure contact fit with the outer side surface of the sludge pyrolysis cylinder shell 21;

[0116] The recovery scraper main body 251 extends along the axial direction parallel to the sludge pyrolysis cylinder shell 21, and both ends of the recovery scraper main body 251 are fixedly connected to the inner side wall of the sludge pyrolysis support outer shell 201;

[0117] A sludge recovery receiving pool 253 with an upward opening is provided below the sludge pyrolysis recovery scraper 25 inside the sludge pyrolysis support outer shell 201.

[0118] Example 8: This example describes an oil-containing sludge magnetization pyrolysis treatment method. Based on the magnetization pyrolysis treatment system for oil-containing sludge in Example 7, the difference from Example 6 is that;

[0119] In step S2, after pyrolysis, the oil-containing sludge forms sludge residues. When the sludge residues rotate with the sludge pyrolysis cylinder shell 21 and pass through the sludge pyrolysis recovery scraper 25, under the scraping action of the recovery scraper blade 252 of the sludge pyrolysis recovery scraper 25, the sludge residues are peeled off from the outer surface of the sludge pyrolysis cylinder shell 21, and the sludge residues slide down along the upper side surface of the sludge pyrolysis recovery scraper 25 to the sludge recovery receiving pool 251 for centralized storage.

[0120] Example 9: On the basis of Example 7, as Figure 6 shown, a thickness control mechanism 26 is provided at the top of the pyrolysis collection input shell 22. The thickness control mechanism 26 includes a thickness control scraper 261 slidably connected to the top of the pyrolysis collection input shell 22;

[0121] Inside the sludge pyrolysis support housing 201, a rear support plate 202 extending along the direction parallel to the axis of the sludge pyrolysis cylinder shell 21 is fixed. On the rear support plate 202, a thickness control fixed cylinder 262 extending radially along the sludge pyrolysis cylinder shell 21 is fixed. The opening end of the thickness control fixed cylinder 262 faces the side of the sludge pyrolysis cylinder shell 21. A thickness control sliding cylinder 263 is slidably connected inside the thickness control fixed cylinder 262. The thickness control scraper 261 is fixedly connected to the outer end of the thickness control sliding cylinder 263;

[0122] Inside the thickness control fixed cylinder 262, a thickness control driving rod 264 for driving the movement of the thickness control sliding cylinder 263 is provided. The thickness control driving rod 264 is an electric control telescopic rod driven by a servo motor in the prior art. The outer rod end of the thickness control driving rod 264 is fixedly connected to the inner end of the thickness control fixed cylinder 262, and the inner rod end of the thickness control driving rod 264 is fixedly connected to the inner end of the thickness control sliding cylinder 263.

[0123] Example 10: This example describes a method for magnetizing and pyrolyzing oily sludge. Based on the magnetizing and pyrolyzing treatment system for oily sludge in Example 9, the difference from Example 8 is as follows;

[0124] In step S2, the thickness control mechanism 26 is used to adjust the thickness of the oily sludge coated on the outer surface of the sludge pyrolysis cylinder shell 21. The thickness control driving rod 264 can drive the thickness control sliding cylinder 263 together with the thickness control scraper 261 to move radially along the sludge pyrolysis cylinder shell 21. When the inner rod of the thickness control driving rod 264 extends, it drives the thickness control scraper 261 closer to the outer surface of the sludge pyrolysis cylinder shell 21. When the inner rod of the thickness control driving rod 264 retracts, it drives the thickness control scraper 261 away from the outer surface of the sludge pyrolysis cylinder shell 21;

[0125] By adjusting the distance between the side of the thickness control scraper 261 close to the sludge pyrolysis cylinder shell 21 and the outer surface of the sludge pyrolysis cylinder shell 21, the thickness of the oily sludge coated on the outer surface of the sludge pyrolysis cylinder shell 21 discharged from the sludge laying output groove 221 can be adjusted.

[0126] Example 11: On the basis of Example 9, as Figure 6 shown, a texture control mechanism 27 is provided above the thickness control scraper 261. The texture control mechanism 27 includes a texture control scraper 271 slidably connected to the top of the thickness control scraper 261. A texture control fixed cylinder 272 arranged in parallel with the thickness control fixed cylinder 262 is fixed on the rear support plate 202. The opening end of the texture control fixed cylinder 272 faces the side of the sludge pyrolysis cylinder shell 21. A texture control sliding cylinder 273 is slidably connected inside the texture control fixed cylinder 272. The texture control scraper 271 is fixedly connected to the outer end of the texture control sliding cylinder 273;

[0127] The texture control squeegee 271 has a plurality of texture flow grooves 2710 near the side of the sludge pyrolysis cylinder shell 21;

[0128] Inside the texture control fixed cylinder 272, there is a texture control driving rod 274 for driving the movement of the texture control sliding cylinder 273. The texture control driving rod 274 is an electric control telescopic rod driven by a servo motor in the prior art. The outer rod end of the texture control driving rod 274 is fixedly connected to the inner end of the texture control fixed cylinder 272, and the inner rod end of the texture control driving rod 274 is fixedly connected to the inner end of the texture control sliding cylinder 273.

[0129] Example 12: This example describes an oil-containing sludge magnetization pyrolysis treatment method. Based on the magnetization pyrolysis treatment system for oil-containing sludge in the above Example 11, the difference from Example 10 is as follows;

[0130] In step S2, the texture control mechanism 27 is used to adjust the shape of the oil-containing sludge coated on the outer surface of the sludge pyrolysis cylinder shell 21. The texture control driving rod 274 can drive the texture control sliding cylinder 273 to move together with the texture control squeegee 271. When the inner rod of the texture control driving rod 274 extends, it drives the texture control squeegee 271 closer to the outer surface of the sludge pyrolysis cylinder shell 21. When the inner rod of the texture control driving rod 274 retracts, it drives the texture control squeegee 271 away from the outer surface of the sludge pyrolysis cylinder shell 21;

[0131] The oil-containing sludge coated on the outer surface of the sludge pyrolysis cylinder shell 21 discharged from the sludge laying output groove 221 can only pass through the texture flow grooves 2710 on the side of the texture control squeegee 271. By replacing texture control squeegees 271 of various specifications, the shape of the oil-containing sludge coated on the outer surface of the sludge pyrolysis cylinder shell 21 can be adjusted.

[0132] Example 13: On the basis of Example 11, as Figure 5 shown, inside the sludge pyrolysis support outer shell 201, there is a sludge preheating temporary storage pool 28 with an upward opening below the sludge pyrolysis cylinder shell 21, and the lower side of the sludge pyrolysis cylinder shell 21 extends into the interior of the sludge preheating temporary storage pool 28;

[0133] Inside the sludge preheating temporary storage pool 28, there is a preheated sludge delivery pump 281. The output end of the preheated sludge delivery pump 281 is connected to the pyrolysis collection input pipe 220 through a pipeline;

[0134] The preheated sludge delivery pump 281 is a screw pump in the prior art;

[0135] The output end of the magnetized sludge delivery pump 104 is connected to the sludge preheating temporary storage pool 28;

[0136] Inside the sludge preheating storage tank 28, there is a preheated sludge scraper 282. The preheated sludge scraper 282 includes a preheated scraper main body 2821 and a preheated scraper edge 2822. The preheated scraper edge 2822 is in top-pressure contact fit with the outer side surface of the sludge pyrolysis cylinder shell 21. The preheated scraper main body 2821 extends along the direction parallel to the axis of the sludge pyrolysis cylinder shell 21, and the end of the preheated scraper main body 2821 is fixedly connected to the inner side wall of the sludge preheating storage tank 28.

[0137] Embodiment 14: This embodiment describes a method for magnetized pyrolysis treatment of oily sludge. Based on the magnetized pyrolysis treatment system for oily sludge in Embodiment 13, the difference from Embodiment 12 is that;

[0138] In step S2, the magnetized oily sludge is first transported to the sludge preheating storage tank 28 by the magnetized sludge transfer pump 104. The lower side of the sludge pyrolysis cylinder shell 21 is immersed in the oily sludge. The residual heat of the sludge pyrolysis cylinder shell 21 is used to preheat the oily sludge, and the preheated scraper edge 2822 of the preheated sludge scraper 282 is used to scrape off the oily sludge remaining attached to the outer surface of the sludge pyrolysis cylinder shell 21 and fall back into the sludge preheating storage tank 28. The preheated oily sludge is then transported to the pyrolysis collection input shell 22 by the preheated sludge transfer pump 281.

[0139] Embodiment 15: On the basis of Embodiment 13, as Figure 8 shown, inside the condensation recovery storage tank 31, there is a heat exchange circulation mechanism 34. The heat exchange circulation mechanism 34 includes a circulation driving cylinder shell 341 arranged inside the condensation recovery storage tank 31 with an upward opening. A plurality of circulation driving plates 342 are fixedly arranged on the outer side wall of the circulation driving cylinder shell 341;

[0140] At the bottom of the circulation driving cylinder shell 341, there is a vertically extending circulation driving shaft 343 fixedly arranged. At the bottom of the condensation recovery storage tank 31, there is a circulation driving housing 344 fixedly arranged. The lower end of the circulation driving shaft 343 extends into the inside of the circulation driving housing 344. Inside the circulation driving housing 344, there is a circulation driving motor 345 for driving the rotation of the circulation driving shaft 343;

[0141] The circulation driving motor 345 is a motor of the prior art. The output shaft of the circulation driving motor 345 drives the rotation of the circulation driving shaft 343 through gear transmission;

[0142] At the top of the condensation recovery storage tank 31, there are an inner ring cooling input pipe 346 and an inner ring cooling output pipe 347 extending vertically. The lower ends of the inner ring cooling input pipe 346 and the inner ring cooling output pipe 347 both extend into the inside of the circulation driving cylinder shell 341.

[0143] Example 16: This example describes a method for magnetothermal pyrolysis treatment of oily sludge. Based on the magnetothermal pyrolysis treatment system for oily sludge in Example 15, the difference from Example 14 is as follows;

[0144] In step S3, the heat exchange circulation mechanism 34 is used to promote the circulation of the cooling water in the condensate recovery storage tank 31, making the heat exchange of the condensate recovery circulation pipe 32 more uniform;

[0145] The circulation drive motor 345 drives the circulation drive shaft 343 to rotate. The circulation drive shaft 343 drives the circulation drive cylinder shell 341 together with multiple circulation drive plates 342 to rotate, stirring the cooling water in the condensate recovery storage tank 31, generating a circulation of the cooling water in the condensate recovery storage tank 31, and further enabling the cooling water to come into more sufficient contact with the condensate recovery circulation pipe 32 for heat exchange;

[0146] At the same time, a delivery pump of the existing technology is used to input cooling water into the circulation drive cylinder shell 341 through the inner ring cooling input pipe 346, and at the same time, a delivery pump of the existing technology is used to discharge an equal amount of cooling water from the circulation drive cylinder shell 341 through the inner ring cooling output pipe 347. The cooling water in the circulation drive cylinder shell 341 can play an auxiliary cooling role, keeping the cooling water in the condensate recovery storage tank 31 at a lower temperature and making the heat exchange efficiency in the condensate recovery storage tank 31 higher.

[0147] Example 17: The difference from Example 16 is that in step S1, the oily sludge flows in the sludge magnetization circulation pipe 11 at a flow rate of 0.5 m / min;

[0148] The magnetization treatment time of the oily sludge is 6 min;

[0149] Among them, in step S2, the pyrolysis treatment time of the oily sludge is 75 min.

[0150] Example 18: The difference from Example 16 is that in step S1, the oily sludge flows in the sludge magnetization circulation pipe 11 at a flow rate of 0.6 m / min;

[0151] The magnetization treatment time of the oily sludge is 5 min;

[0152] Among them, in step S2, the pyrolysis treatment time of the oily sludge is 60 min.

Claims

1. A magnetic pyrolysis treatment system for oily sludge treatment, characterized in that: It comprises a sludge magnetization mechanism (10), a sludge pyrolysis mechanism (20) and a condensation recovery mechanism (30) which are sequentially connected; The sludge magnetization mechanism (10) comprises a horizontally arranged sludge magnetization circulation pipe (11), the periphery of the sludge magnetization circulation pipe (11) is provided with a magnetization support pipe (12) coaxially arranged therewith, and the inner side of the magnetization support pipe (12) is provided with a plurality of sludge magnetization permanent magnets (13); The sludge pyrolysis mechanism (20) comprises a sludge pyrolysis support shell (201), a horizontally arranged sludge pyrolysis cylinder shell (21) is rotatably connected inside the sludge pyrolysis support shell (201), a pyrolysis collection input shell (22) extending in a direction parallel to its axis is provided on the side of the sludge pyrolysis cylinder shell (21), a side of the pyrolysis collection input shell (22) close to the sludge pyrolysis cylinder shell (21) is an open side, and the open side of the pyrolysis collection input shell (22) is in close contact with the outer side of the sludge pyrolysis cylinder shell (21); The top of the pyrolysis collection input shell (22) near the opening side is provided with a sludge laying output groove (221); A pyrolysis supporting arc plate (23) extending in a direction parallel to the axis of the sludge pyrolysis cylinder shell (21) is fixed inside the pyrolysis supporting arc plate (23), and a plurality of electromagnetic induction heaters (231) are fixed on the top of the pyrolysis supporting arc plate (23); A hollow oil-gas separation outer discharge shell (24) is fixed inside the sludge pyrolysis support shell (201) and located above the sludge pyrolysis cylinder shell (21); the lower side of the oil-gas separation outer discharge shell (24) has a plurality of oil-gas separation flow holes (240) communicating with the interior thereof; and the top of the oil-gas separation outer discharge shell (24) is fixed with an oil-gas separation outer discharge pipe (241) communicating with the interior thereof; The condensate recovery mechanism (30) comprises a condensate recovery holding tank (31), a condensate recovery circulation pipe (32) spirally extending in a vertical direction is fixed inside the condensate recovery holding tank (31), the upper end of the condensate recovery circulation pipe (32) is connected to the oil-gas separation external discharge pipe (241), and a condensate recovery temporary storage shell (33) connected to the lower end of the condensate recovery circulation pipe (32) is fixed at the bottom of the condensate recovery holding tank (31); A main cooling liquid input pipe (311) and a main cooling liquid output pipe (312) which are connected to the interior of the condensation recovery container (31) are fixed on the outside of the container.

2. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: The input end of the sludge magnetization circulation pipe (11) is connected to a screw extruder (14), and the output end of the screw extruder (14) is connected to the sludge magnetization circulation pipe (11); The input end of the screw extruder (14) is connected to an oily sludge storage tank (102) via a sludge magnetization input pipe (101).

3. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: The output end of the sludge magnetized circulation pipe (11) is connected to a magnetized sludge storage box (103), and a magnetized sludge delivery pump (104) is fixed in the magnetized sludge storage box (103); A plurality of pyrolysis collection input pipes (220) connected to the interior of the pyrolysis collection input shell (22) are fixed to the outside of the pyrolysis collection input shell (22), and the output end of the magnetized sludge delivery pump (104) is connected to the pyrolysis collection input pipe (220).

4. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: The sludge magnetizing permanent magnet (13) is connected to the magnetizing support tube (12) via a magnetizing array control structure (15); a plurality of array connection holes (150) are provided on the side wall of the magnetizing support tube (12) and are radially penetrated therethrough; the magnetizing array control structure (15) comprises an array control fixing cylinder (151) fixed in the array connection hole (150) and extending radially along the magnetizing support tube (12) and opening inward; an array control sliding cylinder (152) opening outward is slidably connected in the array control fixing cylinder (151); and a plurality of the sludge magnetizing permanent magnets (13) are fixed one by one to one end of the array control sliding cylinder (152) located on the inner side of the magnetizing support tube (12); An array control driving rod (153) for driving the array control sliding cylinder (152) to move is arranged in the array control fixed cylinder (151); A plurality of sludge magnetizing permanent magnets (13) arranged circumferentially at the same cross section of the magnetizing support tube (12) form a group, each group of the sludge magnetizing permanent magnets (13) forming an annular structure around the circumference of the magnetizing support tube (12), and a plurality of groups of the sludge magnetizing permanent magnets (13) having annular structures are arranged along the axial direction of the magnetizing support tube (12).

5. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: A sludge pyrolysis recovery scraper (25) is provided on the side of the sludge pyrolysis shell (21) away from the pyrolysis collection input shell (22), and the sludge pyrolysis recovery scraper (25) comprises a recovery scraper body (251) and a recovery scraper blade (252), and the recovery scraper blade (252) is in press contact with the outer side surface of the sludge pyrolysis shell (21); The recovery scraper body (251) is arranged to extend in a direction parallel to the axis of the sludge pyrolysis shell (21), and both ends of the recovery scraper body (251) are fixedly connected to the inner side wall of the sludge pyrolysis support shell (201); A sludge recovery holding pool (253) with an opening facing upward is provided in the sludge pyrolysis support shell (201) and below the sludge pyrolysis recovery scraper (25).

6. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: A thickness control mechanism (26) is provided on the top of the pyrolysis collecting input shell (22), and the thickness control mechanism (26) comprises a thickness control scraper (261) slidably connected to the top of the pyrolysis collecting input shell (22); A back support plate (202) extending in a direction parallel to the axis of the sludge pyrolysis shell (21) is fixed inside the sludge pyrolysis support shell (201); a thickness control fixed cylinder (262) extending radially along the sludge pyrolysis shell (21) is fixed on the back support plate (202); an open end of the thickness control fixed cylinder (262) faces one side of the sludge pyrolysis shell (21); a thickness control sliding cylinder (263) is slidably connected inside the thickness control fixed cylinder (262); and the thickness control scraper (261) is fixedly connected to the outer end of the thickness control sliding cylinder (263); A thickness control driving rod (264) for driving the thickness control sliding cylinder (263) to move is arranged inside the thickness control fixed cylinder (262).

7. The magnetic pyrolysis treatment system for treating oily sludge according to claim 6, characterized in that: A texture control mechanism (27) is provided above the thickness control scraper (261), the texture control mechanism (27) comprising a texture control scraper (271) slidably connected to the top of the thickness control scraper (261), a texture control fixed cylinder (272) arranged in parallel with the thickness control fixed cylinder (262) is fixed on the back support plate (202), the open end of the texture control fixed cylinder (272) faces one side of the sludge pyrolysis cylinder shell (21), a texture control sliding cylinder (273) is slidably connected inside the texture control fixed cylinder (272), and the texture control scraper (271) is fixedly connected to the outer end of the texture control sliding cylinder (273); The texture control scraper (271) has a plurality of texture flow grooves (2710) on the side close to the sludge pyrolysis shell (21); A texture control driving rod (274) for driving the texture control sliding cylinder (273) to move is arranged inside the texture control fixed cylinder (272).

8. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: A sludge preheating temporary storage tank (28) with an upward opening is provided in the sludge pyrolysis support shell (201) below the sludge pyrolysis shell (21), and the lower side of the sludge pyrolysis shell (21) extends to the interior of the sludge preheating temporary storage tank (28); A preheating sludge delivery pump (281) is provided in the sludge preheating temporary storage tank (28), and the output end of the preheating sludge delivery pump (281) is connected to the pyrolysis collection input pipe (220) through a pipeline; The output end of the magnetized sludge delivery pump (104) is connected to the sludge preheating temporary storage tank (28); A preheating sludge scraper (282) is provided in the sludge preheating temporary storage tank (28), and the preheating sludge scraper (282) comprises a preheating scraper body (2821) and a preheating scraper blade (2822), the preheating scraper blade (2822) is in press-contact cooperation with the outer side surface of the sludge pyrolysis shell (21), the preheating scraper body (2821) is extended and arranged in a direction parallel to the axis of the sludge pyrolysis shell (21), and the end of the preheating scraper body (2821) is fixedly connected to the inner side wall of the sludge preheating temporary storage tank (28).

9. The magnetic pyrolysis treatment system for treating oily sludge according to claim 1, characterized in that: A heat exchange circulation mechanism (34) is provided in the condensation recovery storage tank (31), and the heat exchange circulation mechanism (34) comprises a circulation drive shell (341) which is arranged in the condensation recovery storage tank (31) and has an opening facing upward, and a plurality of circulation drive plates (342) are fixed to the outer wall of the circulation drive shell (341); A circulation drive shaft (343) extending in a vertical direction is fixed at the bottom of the circulation drive cylinder shell (341), a circulation drive housing shell (344) is fixed at the bottom of the condensation recovery housing tank (31), the lower end of the circulation drive shaft (343) extends into the interior of the circulation drive housing shell (344), and a circulation drive motor (345) for driving the circulation drive shaft (343) to rotate is arranged in the circulation drive housing shell (344); An inner ring cooling input pipe (346) and an inner ring cooling output pipe (347) extending in a vertical direction are fixed to the top of the condensation recovery holding tank (31), and the lower ends of the inner ring cooling input pipe (346) and the inner ring cooling output pipe (347) both extend to the interior of the circulation drive shell (341).

10. A method for treating oily sludge by magnetization pyrolysis, based on a magnetization pyrolysis system for treating oily sludge according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Magnetization treatment of oily sludge: The oily sludge to be treated is transported to the sludge magnetization circulation pipe (11), and the oily sludge is circulated in the sludge magnetization circulation pipe (11) at a flow rate of 0.3 to 0.6 m / min; The oily sludge is magnetized by using a plurality of sludge magnetizing permanent magnets (13) arranged in an array under a magnetic field strength of 6000 Gauss, and the magnetization treatment time is 5 to 10 minutes; S2. Pyrolysis of oily sludge: The oily sludge after magnetization treatment is transported to the pyrolysis collection input shell (22), and then the sludge pyrolysis cylinder shell (21) is driven to rotate in a counterclockwise direction by a servo motor fixed on the inner side wall of the sludge pyrolysis support shell (201) through a gear ring transmission structure; The oily sludge in the pyrolysis collection input shell (22) is discharged from the sludge laying output groove (221) and coated on the outer surface of the sludge pyrolysis shell (21). When the oily sludge continues to rotate with the sludge pyrolysis shell (21) and passes through the electromagnetic induction heater (231), each electromagnetic induction heater (231) heats the sludge pyrolysis shell (21) by electromagnetic induction heating. The heating temperature of the sludge pyrolysis shell (21) is 500° C., and the oily sludge coated on the outer surface of the sludge pyrolysis shell (21) is pyrolyzed on the sludge pyrolysis shell (21) for 60 to 90 minutes; The oil-gas separation outer discharge pipe (241) is provided with a fan, and the input end of the fan is connected to the oil-gas separation outer discharge pipe (241). Under the suction effect of the fan, the oil and gas generated by the pyrolysis of the oil-containing sludge enters the oil-gas separation outer discharge shell (24) through the oil-gas separation flow hole (240), and is then discharged through the oil-gas separation outer discharge pipe (241); S3, Oil and gas condensation recovery and treatment: The oil and gas discharged from the oil and gas separation external discharge pipe (241) enters from the upper end of the condensation recovery circulation pipe (32), and the oil and gas circulate from top to bottom in the condensation recovery circulation pipe (32). The condensation recovery holding tank (31) is filled with cooling water, and the oil and gas in the condensation recovery circulation pipe (32) are liquefied through heat exchange. The liquefied oil gas is discharged from the lower end of the condensation recovery circulation pipe (32) and flows into the condensation recovery temporary storage shell (33) for temporary storage.

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