Cracking kettle for cracking oil sludge

Abstract

The invention belongs to the technical field of oil sludge cracking, and discloses a cracking kettle for cracking oil sludge, which comprises a driving assembly, a cracking assembly is arranged at the upper end of the driving assembly, a heating assembly is arranged at the upper end of the cracking assembly, a cooling assembly is arranged at the upper end of the heating assembly, and the driving assembly comprises a driving shell. A servo motor in the driving assembly drives a driving bevel gear to rotate, an inner rotating shaft and an outer rotating sleeve are made to rotate in different directions, then C-shaped stirring blocks arranged in the cracking assembly in a staggered mode are driven to move, and compared with a traditional single stirring structure, by means of the double-shaft reverse rotation stirring mode, the stirring efficiency is greatly improved. According to the oil sludge stirring device, the effect of reversely stirring the inner ring and the outer ring of oil sludge can be achieved, reverse shearing force is formed, and compared with the situation that single-direction rotary stirring can drive the oil sludge to circularly move in the same circumferential direction, and high-viscosity oil sludge is prone to being tightly attached to the kettle wall to form a stable circulation layer under the action of centrifugal force, the stirring effect can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of sludge pyrolysis technology, specifically a pyrolysis reactor for pyrolyzing sludge. Background Technology

[0002] A pyrolysis reactor for pyrolyzing oily sludge is a device used to treat oily sludge generated during petroleum development, production, and processing. It separates oil, gas, and slag from the oily sludge through high-temperature pyrolysis, achieving resource recovery and environmental protection. It generally includes a reactor body with a feed port and oil / gas outlet at the top and a slag outlet at the bottom. A rotating shaft is installed inside the reactor body, and a spiral stirring belt or stirring blades are installed on the rotating shaft to stir the oily sludge and ensure it is heated evenly. Some pyrolysis reactors also have heating wires on the surface of the spiral stirring belt, and heating coils are installed on the inner wall of the reactor body to provide the heat required for pyrolysis.

[0003] However, most current pyrolysis reactors used for cracking oily sludge employ a single stirring structure. In this unidirectional stirring mode, high-viscosity oily sludge aggregates towards the reactor wall due to centrifugal force, forming a "circulating layer" tightly adhering to the reactor wall. Due to the lack of reverse or radial shearing action, the material in the central area and bottom corners of the reactor is difficult to be effectively moved, forming a stirring blind zone. The material in this area cannot fully contact the heating source, resulting in a prolonged overall pyrolysis time, incomplete pyrolysis reaction, and reduced resource recovery efficiency. The viscosity of oil, water, and solid particles in the oily sludge increases at high temperatures, making them prone to agglomeration. Unidirectional stirring can only provide unidirectional thrust and cannot generate cross-shearing forces to break up the agglomerates. The agglomerated oily sludge lumps, due to insufficient internal heat, exhibit overheating and coking on the outer layer and underheating on the inner layer. This not only affects the quality of the pyrolysis products but also causes the coked material to adhere to the stirring components, further hindering the stirring effect. Summary of the Invention

[0004] The purpose of this invention is to provide a pyrolysis reactor for pyrolyzing oily sludge, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pyrolysis reactor for pyrolyzing oily sludge, comprising a driving assembly, a pyrolysis assembly at the upper end of the driving assembly, a heating assembly at the upper end of the pyrolysis assembly, and a cooling assembly at the upper end of the heating assembly. The drive assembly includes a drive housing, a receiving base is fixedly connected to the upper end of the drive housing, a C-shaped bracket is fixedly connected inside the drive housing, a servo motor is fixedly connected to the middle of the C-shaped bracket, an active bevel gear is fixedly connected to the output end of the servo motor, an inner rotating shaft is rotatably connected to the lower end of the C-shaped bracket, and an outer rotating sleeve is rotatably connected to the upper end of the C-shaped bracket and outside the inner rotating shaft.

[0006] Preferably, the inner rotating shaft passes through the interior of the outer rotating sleeve, a first driven bevel gear is fixedly connected to the middle of the inner rotating shaft, and a second driven bevel gear is fixedly connected to the middle of the outer rotating sleeve. Both the second driven bevel gear and the first driven bevel gear are meshed with the driving bevel gear.

[0007] Preferably, the pyrolysis assembly includes a pyrolysis shell fixedly connected to the upper end of the receiving base. The lower end of the pyrolysis shell is connected to a sludge discharge port. Inside the pyrolysis shell, there is a pair of symmetrical L-shaped scraping rods. Both L-shaped scraping rods are fixedly connected to the upper end of the outer rotating sleeve. A C-shaped stirring block is fixedly connected to the middle of each pair of L-shaped scraping rods. Similarly, a pair of C-shaped stirring blocks is fixedly connected to the middle of the inner rotating shaft. The two pairs of C-shaped stirring blocks are staggered.

[0008] Preferably, the C-shaped stirring block has multiple stirring rods fixedly connected inside, and strip-shaped spring sheets are fixedly connected to both the upper and lower ends of the C-shaped stirring block.

[0009] Preferably, the heating assembly includes a mounting shell fixedly connected to the upper end of the pyrolysis shell, a gas communication sleeve fixedly connected inside the mounting shell, a pair of symmetrical electric wire driving components fixedly connected inside the mounting shell, power supply connection lines electrically installed at the lower ends of the pair of electric wire driving components, a pair of symmetrical bearings provided at the bottom end of the inner part of the mounting shell, the outer ring of the bearings fixedly connected to the bottom end of the mounting shell, and an external heating copper tube fixedly connected inside the bearings.

[0010] Preferably, a heating wire is fixedly connected inside the external heating copper tube, and the heating wire is electrically connected to the power supply connection line. A plurality of metal heat-conducting plates are fixedly connected to the middle of the external heating copper tube, and a pair of symmetrical contact rollers are also fixedly connected to the middle of the external heating copper tube. The middle part of the pair of contact rollers respectively contacts the middle part of a pair of strip-shaped springs.

[0011] Preferably, the cooling assembly includes a coolant tank housing fixedly connected to the upper end of the mounting housing. The upper part of the coolant tank housing is connected to an inlet, and the middle part of the coolant tank housing is connected to an outlet. The interior of the coolant tank housing is provided with a gas recovery connection pipe. One end of the gas recovery connection pipe is connected to the upper end of a gas communication sleeve, and the other end of the gas recovery connection pipe is connected to a cooling pipe.

[0012] Preferably, the bottom of the mounting housing has a pair of circular grooves for mounting with bearings.

[0013] Preferably, the overall shape of the cooling pipe is spiral, and the height of the inner ring of the cooling pipe is higher than the height of the outer ring.

[0014] The beneficial effects of this invention are as follows: 1. This invention uses a servo motor in the drive assembly to drive the active bevel gear to rotate, causing the inner rotating shaft and the outer rotating sleeve to rotate in different directions. This, in turn, drives the C-shaped stirring blocks that are staggered in the pyrolysis assembly to move. This dual-axis reversing stirring method, compared with the traditional single stirring structure, can achieve the effect of reverse stirring of the inner and outer rings of the sludge, forming a reverse shear force. In contrast, single-direction rotation stirring will cause the sludge to circulate along the same circumference. Under the action of centrifugal force, the high-viscosity sludge easily adheres to the reactor wall to form a stable "circulation layer", which can greatly improve the stirring effect. 2. In this invention, an external heating copper tube in the heating assembly is installed in the mounting housing via a bearing, and its internal heating wire is connected to the driving components. During the stirring process, the strip-shaped spring on the C-shaped stirring block contacts the contact roller in the middle of the external heating copper tube, causing the heating copper tube to rotate back and forth. Combined with multiple metal heat-conducting plates, this breaks the traditional fixed heating mode and achieves dynamic and uniform heat transfer, effectively avoiding the problems of local overheating and coking of sludge or insufficient heating, and significantly improving the pyrolysis quality. 3. This invention uses an outer rotating sleeve to drive an L-shaped scraper to rotate. During the pyrolysis of oily sludge, the L-shaped scraper can promptly scrape and clean the oily sludge adhering to the inner wall of the pyrolysis shell, solving the problem of difficult cleaning of oily sludge from the walls of existing pyrolysis reactors, reducing maintenance costs, minimizing downtime for cleaning, ensuring continuous and stable operation of the equipment, and meeting the needs of environmental protection and efficient treatment of oily sludge. 4. The present invention increases the flow path and time of the recovered gas in the cooling pipe by using a spiral cooling pipe design in the cooling component with the inner ring height being higher than the outer ring. Combined with the coolant in the coolant tank shell, it can more fully cool the gas generated by pyrolysis, improve the gas recovery efficiency, and eliminate the need for multiple devices to work separately, further improving practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the drive housing structure of the present invention; Figure 3 This is a schematic cross-sectional view of the pyrolysis shell structure of the present invention; Figure 4 This is a schematic cross-sectional view of the coolant tank outer casing of the present invention; Figure 5 This is a schematic diagram of the heating wire connection structure of the present invention; Figure 6 This is a schematic cross-sectional view of the outer rotating sleeve of the present invention; Figure 7 This is a schematic diagram of the overall structure of the C-shaped stirring block of the present invention.

[0016] In the diagram: 1. Drive assembly; 2. Pyrolysis assembly; 3. Heating assembly; 4. Cooling assembly; 101. Drive housing; 102. Support base; 103. C-shaped bracket; 104. Servo motor; 105. Driven bevel gear; 106. Inner rotating shaft; 107. Outer rotating sleeve; 108. First driven bevel gear; 109. Second driven bevel gear; 201. Pyrolysis housing; 202. Sludge discharge port; 203. L-shaped scraper; 204. C-shaped... 205. Stirring block; 206. Stirring rod; 307. Strip spring; 308. Mounting housing; 309. Gas connecting sleeve; 3000. Electric wire drive component; 3001. Bearing; 301. External heating copper tube; 302. Power supply connection line; 303. Heating wire; 304. Metal heat-conducting plate; 305. Contact roller; 406. Coolant tank housing; 407. Inlet; 408. Outlet; 409. Gas recovery connection pipe; 4000. Cooling pipe. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1 to 7 As shown, this embodiment of the invention provides a pyrolysis reactor for pyrolyzing oily sludge, including a driving component 1, a pyrolysis component 2 at the upper end of the driving component 1, a heating component 3 at the upper end of the pyrolysis component 2, and a cooling component 4 at the upper end of the heating component 3. The drive assembly 1 includes a drive housing 101, a receiving base 102 fixedly connected to the upper end of the drive housing 101, a C-shaped bracket 103 fixedly connected inside the drive housing 101, a servo motor 104 fixedly connected to the middle of the C-shaped bracket 103, an active bevel gear 105 fixedly connected to the output end of the servo motor 104, an inner rotating shaft 106 rotatably connected to the lower end of the C-shaped bracket 103, and an outer rotating sleeve 107 rotatably connected to the upper end of the C-shaped bracket 103 and outside the inner rotating shaft 106.

[0019] The drive assembly includes a servo motor 104, a driving bevel gear 105, a first driven bevel gear 108, and a second driven bevel gear 109. These components, along with an inner rotating shaft 106 and an outer rotating sleeve 107, enable a single power source to drive dual-shaft reverse rotation, providing a bidirectional power foundation for subsequent stirring and cleaning actions. The servo motor has a model number such as 110AEA12020-SH3, a power of 1.5kW, and a speed range of 0-1500r / min. The gear set includes a driving bevel gear with a module of 2mm and 20 teeth, a first driven gear with 30 teeth, and a second driven bevel gear with 109. The gear has 40 teeth, and the transmission ratio is 4:3 (inner shaft:outer shaft). The heating wire is made of nickel-chromium alloy, has a power of 2kW, and a resistance of 24.2Ω. The output voltage of the wire drive components is 220V, and the current is 9A. The external heating copper tube has a diameter of 50mm, a length of 800mm, and a wall thickness of 3mm. The metal heat-conducting fins are 8 in number, with dimensions of 50mm (length) × 30mm (width) × 2mm (thickness), and are made of copper. The cooling pipe has a diameter of 30mm, 5 spiral turns, an inner ring height of 200mm, and an outer ring height of 150mm. The coolant tank has a volume of 50L.

[0020] like Figure 2 As shown, the inner rotating shaft 106 passes through the interior of the outer rotating sleeve 107. A first driven bevel gear 108 is fixedly connected to the middle of the inner rotating shaft 106, and a second driven bevel gear 109 is fixedly connected to the middle of the outer rotating sleeve 107. Both the second driven bevel gear 109 and the first driven bevel gear 108 are meshed with the driving bevel gear 105. The L-shaped scraper 203, which is fixed to the outer rotating sleeve 107 in the pyrolysis assembly, can scrape off the oily sludge adhering to the inner wall of the pyrolysis shell 201 in real time as the outer rotating sleeve 107 rotates, thus avoiding the coking and residue of the oily sludge.

[0021] like Figure 2 As shown, the pyrolysis assembly 2 includes a pyrolysis shell 201 fixedly connected to the upper end of the receiving base 102. The lower end of the pyrolysis shell 201 is connected to a sludge discharge port 202. Inside the pyrolysis shell 201, there is a pair of symmetrical L-shaped scraping rods 203. Both L-shaped scraping rods 203 are fixedly connected to the upper end of the outer rotating sleeve 107. C-shaped stirring blocks 204 are fixedly connected to the middle of both L-shaped scraping rods 203. Similarly, a pair of C-shaped stirring blocks 204 are fixedly connected to the middle of the inner rotating shaft 106. The two pairs of C-shaped stirring blocks 204 are staggered.

[0022] The pyrolysis assembly contains two pairs of C-shaped stirring blocks 204 that are fixed to the inner rotating shaft 106 and the outer rotating sleeve 107 respectively and are staggered. Together with the multiple stirring rods 205 inside the C-shaped stirring blocks 204, they achieve the effect of bidirectional reverse stirring of the sludge inside the pyrolysis shell 201, breaking the "circulation layer" and improving the uniformity of the sludge mixing.

[0023] like Figure 7 As shown, multiple stirring rods 205 are fixedly connected inside the C-shaped stirring block 204, and strip-shaped spring pieces 206 are fixedly connected to both the upper and lower ends of the C-shaped stirring block 204.

[0024] The strip spring 206 is used in conjunction with the contact roller 309 to drive the contact roller 309 to rotate.

[0025] like Figure 5 As shown, the heating assembly 3 includes a mounting housing 301 fixedly connected to the upper end of the pyrolysis housing 201. A gas communication sleeve 302 is fixedly connected inside the mounting housing 301. A pair of symmetrical electric wire drive components 303 are fixedly connected inside the mounting housing 301. Power supply connection lines 306 are electrically installed at the lower ends of the pair of electric wire drive components 303. A pair of symmetrical bearings 304 are provided at the bottom of the interior of the mounting housing 301. The outer ring of the bearings 304 is fixedly connected to the bottom of the mounting housing 301. An external heating copper tube 305 is fixedly connected inside the bearings 304.

[0026] The heating component uses an electric wire drive element 303, a power supply connection line 306, and an electric heating wire 307 inside an external heating copper tube 305 to provide a stable heat source for the heating component. In addition, multiple metal heat-conducting plates 308 on the external heating copper tube 305 are used to expand the heat transfer area and enhance the heat transfer efficiency to the sludge.

[0027] like Figure 5 As shown, a heating wire 307 is fixedly connected inside the external heating copper tube 305. The heating wire 307 is electrically connected to the power supply connection line 306. Multiple metal heat-conducting plates 308 are fixedly connected to the middle of the external heating copper tube 305. A pair of symmetrical contact rollers 309 are also fixedly connected to the middle of the external heating copper tube 305. The middle part of the pair of contact rollers 309 is in contact with the middle part of a pair of strip-shaped springs 206 respectively.

[0028] The strip-shaped springs 206 at the upper and lower ends of the C-shaped stirring block 204 in the heating component, together with the contact rollers 309 on the external heating copper tube 305 and the bearings 304 in the housing 301, achieve the effect of driving the external heating copper tube 305 to rotate back and forth during the stirring process, breaking the fixed heating mode and avoiding local overheating or underheating of the sludge.

[0029] like Figure 4As shown, the cooling assembly 4 includes a coolant tank housing 401 fixedly connected to the upper end of the mounting housing 301. The upper part of the coolant tank housing 401 is connected to an inlet 402, and the middle part of the coolant tank housing 401 is connected to an outlet 403. The interior of the coolant tank housing 401 is provided with a gas recovery connection pipe 404. One end of the gas recovery connection pipe 404 is connected to the upper end of the gas communication sleeve 302, and the other end of the gas recovery connection pipe 404 is connected to a cooling pipe 405.

[0030] The cooling component features a spiral cooling pipe 405 with an inner ring higher than the outer ring. This, along with the coolant inside the coolant tank 401, extends the flow path and residence time of the cracked oil and gas within the cooling pipe 405, achieving sufficient cooling and condensation of the oil and gas and improving oil and gas recovery efficiency.

[0031] like Figure 3 As shown, a pair of circular grooves are provided at the bottom of the inner side of the mounting housing 301 to accommodate the bearing 304.

[0032] The bearing 304 is precisely positioned and fixed by using a circular groove at the bottom of the housing 301 to accommodate the bearing 304, thus ensuring the stability of the external heating copper tube 305 during rotation.

[0033] like Figure 4 As shown, the overall shape of the cooling pipe 405 is spiral, and the height of the inner ring of the cooling pipe 405 is higher than the height of the outer ring.

[0034] The cooling pipe 405 is designed with a spiral structure, which can maximize the extension of the flow path of cracked oil and gas within the limited internal space of the coolant tank shell 401, avoiding the problem of rapid oil and gas passage and insufficient heat exchange caused by straight pipes or short paths.

[0035] Working principle and usage process: When the pyrolysis reactor for cracking oily sludge is started, the core power is first provided by the drive assembly, which powers the servo motor 104 on the C-shaped bracket 103 inside the outer casing 101. Its output drives the active bevel gear 105 to rotate. The active bevel gear 105 simultaneously meshes with the first driven bevel gear 108 of the inner rotating shaft 106 and the second driven bevel gear 109 of the outer rotating sleeve 107. Because the two driven bevel gears mesh in opposite directions, this drives the inner rotating shaft 106 and the outer rotating sleeve 107 to rotate in opposite directions. Both rotate stably in opposite directions and are rotatably connected to the C-shaped support 103, ensuring uninterrupted power transmission. The reverse power is transmitted to the upper pyrolysis assembly. Within the pyrolysis assembly, the upper end of the outer rotating sleeve 107 is fixed to a pair of L-shaped scraping rods 203 inside the pyrolysis shell 201, causing the L-shaped scraping rods 203 and their central C-shaped stirring blocks 204 to rotate in one direction. The upper end of the inner rotating shaft 106 extends into the pyrolysis shell 201, causing another pair of C-shaped stirring blocks 204 in its center to rotate in the opposite direction. The two pairs of C-shaped stirring blocks 204 are staggered and generate reverse shear force when rotating in opposite directions. At the same time, multiple stirring rods 205 inside the C-shaped stirring blocks 204 further divide the oily sludge, preventing the oily sludge from forming a "circulating layer" due to unidirectional stirring, thus achieving uniform mixing. In addition, during the rotation of the L-shaped scraper 203, its outer side is in contact with the inner wall of the pyrolysis shell 201, which can scrape off the oily sludge adhering to the reactor wall in real time, preventing coking residue. The scraped oily sludge falls back into the reactor to participate in pyrolysis. Finally, the residue after pyrolysis is... The slag is discharged through the sludge discharge port 202 at the lower end of the pyrolysis shell 201. The heating components work synchronously with the pyrolysis process. The electric wire drive component 303 inside the shell 301 is energized, and the heating wire 307 inside the external heating copper tube 305 is powered through the power supply connection line 306. After the heating wire 307 heats up, the heat is transferred through the external heating copper tube 305 to multiple metal heat-conducting plates 308 on its surface. The metal heat-conducting plates 308 increase the heat dissipation area and transfer the heat to the sludge inside the pyrolysis shell 201.Simultaneously, the strip-shaped springs 206 at both ends of the C-shaped stirring block 204 rotate with the stirring action. The middle of the strip-shaped springs 206 continuously contacts the contact rollers 309 on the external heating copper tube 305. Because the C-shaped stirring block 204 rotates in the opposite direction, the strip-shaped springs 206 generate alternating forward and reverse thrusts on the contact rollers 309. The external heating copper tube 305 is rotatably connected to the mounting shell 301 through the bearing 304, achieving reciprocating rotation under external force. This breaks the traditional fixed heating mode, allowing the heat transferred by the metal heat-conducting plate 308 to evenly cover the sludge in the reactor, avoiding local overheating or insufficient heating. The oil and gas mixture generated during the pyrolysis process passes through the mounting shell. The gas-gas mixture enters the cooling assembly through the gas-gas connecting sleeve 302 inside 301. The oil-gas mixture flows into the cooling pipe 405 inside the coolant tank housing 401 via the recovery gas connecting pipe 404 at the upper end of the gas-gas connecting sleeve 302. Previously, coolant was injected through the inlet 402 at the upper end of the coolant tank housing 401. The coolant fills the housing and surrounds the cooling pipe 405. The cooling pipe 405 is spiral-shaped with the inner ring higher than the outer ring, extending the flow path and residence time of the oil-gas mixture within the pipe. After sufficient heat exchange between the oil-gas and coolant, it condenses into recyclable liquid oil. The cooled coolant can be discharged and replaced through the outlet 403, completing the oil-gas recovery process.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pyrolysis reactor for pyrolyzing oily sludge, comprising a drive assembly (1), characterized in that: The upper end of the driving component (1) is provided with a pyrolysis component (2), the upper end of the pyrolysis component (2) is provided with a heating component (3), and the upper end of the heating component (3) is provided with a cooling component (4). The drive assembly (1) includes a drive housing (101), a receiving base (102) is fixedly connected to the upper end of the drive housing (101), a C-shaped bracket (103) is fixedly connected inside the drive housing (101), a servo motor (104) is fixedly connected to the middle part of the C-shaped bracket (103), an active bevel gear (105) is fixedly connected to the output end of the servo motor (104), an inner rotating shaft (106) is rotatably connected to the lower end of the C-shaped bracket (103), and an outer rotating sleeve (107) is rotatably connected to the upper end of the C-shaped bracket (103) and outside the inner rotating shaft (106).

2. The pyrolysis reactor for pyrolyzing oily sludge according to claim 1, characterized in that: The inner rotating shaft (106) passes through the interior of the outer rotating sleeve (107). A first driven bevel gear (108) is fixedly connected to the middle of the inner rotating shaft (106), and a second driven bevel gear (109) is fixedly connected to the middle of the outer rotating sleeve (107). Both the second driven bevel gear (109) and the first driven bevel gear (108) are meshed with the driving bevel gear (105).

3. The pyrolysis reactor for pyrolyzing oily sludge according to claim 1, characterized in that: The pyrolysis assembly (2) includes a pyrolysis shell (201) fixedly connected to the upper end of the receiving base (102). The lower end of the pyrolysis shell (201) is connected to a mud discharge port (202). Inside the pyrolysis shell (201) are a pair of symmetrical L-shaped scraping rods (203). Both L-shaped scraping rods (203) are fixedly connected to the upper end of the outer rotating sleeve (107). C-shaped stirring blocks (204) are fixedly connected to the middle of both L-shaped scraping rods (203). A pair of C-shaped stirring blocks (204) are also fixedly connected to the middle of the inner rotating shaft (106). The two pairs of C-shaped stirring blocks (204) are staggered.

4. The pyrolysis reactor for pyrolyzing oily sludge according to claim 3, characterized in that: The C-shaped stirring block (204) has multiple stirring rods (205) fixedly connected inside, and strip-shaped spring pieces (206) are fixedly connected to both the upper and lower ends of the C-shaped stirring block (204).

5. The pyrolysis reactor for pyrolyzing oily sludge according to claim 1, characterized in that: The heating assembly (3) includes a mounting shell (301) fixedly connected to the upper end of the pyrolysis shell (201). A gas communication sleeve (302) is fixedly connected inside the mounting shell (301). A pair of symmetrical electric wire drive components (303) are fixedly connected inside the mounting shell (301). Power supply connection lines (306) are electrically installed at the lower ends of the pair of electric wire drive components (303). A pair of symmetrical bearings (304) are provided at the bottom of the interior of the mounting shell (301). The outer ring of the bearing (304) is fixedly connected to the bottom of the mounting shell (301). An external heating copper tube (305) is fixedly connected inside the bearing (304).

6. The pyrolysis reactor for pyrolyzing oily sludge according to claim 5, characterized in that: The external heating copper tube (305) is internally fixedly connected to a heating wire (307), which is electrically connected to a power supply connection line (306). Multiple metal heat-conducting plates (308) are fixedly connected to the middle of the external heating copper tube (305). A pair of symmetrical contact rollers (309) are also fixedly connected to the middle of the external heating copper tube (305). The middle of the pair of contact rollers (309) is in contact with the middle of a pair of strip springs (206).

7. The pyrolysis reactor for pyrolyzing oily sludge according to claim 1, characterized in that: The cooling assembly (4) includes a coolant tank housing (401) fixedly connected to the upper end of the mounting housing (301). The upper part of the coolant tank housing (401) is connected to an inlet (402), and the middle part of the coolant tank housing (401) is connected to an outlet (403). The interior of the coolant tank housing (401) is provided with a gas recovery connection pipe (404). One end of the gas recovery connection pipe (404) is connected to the upper end of the gas communication sleeve (302), and the other end of the gas recovery connection pipe (404) is connected to a cooling pipe (405).

8. The pyrolysis reactor for pyrolyzing oily sludge according to claim 5, characterized in that: The bottom of the mounting housing (301) has a pair of circular grooves for mounting bearings (304).

9. The pyrolysis reactor for pyrolyzing oily sludge according to claim 7, characterized in that: The cooling pipe (405) has a spiral shape, and the inner ring of the cooling pipe (405) is higher than the outer ring.

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