Oil-based drilling cutting pyrolysis treatment line

Abstract

The utility model relates to an oil-based drilling cutting pyrolysis treatment line, and belongs to the technical field of oil-containing drilling cutting waste treatment, the oil-based drilling cutting pyrolysis treatment line comprises a treatment device and a purification cylinder connected to the treatment device, the purification cylinder communicates with the treatment device, and a spraying structure for spraying and settling flue gas, a pollution discharge structure and an exhaust structure are arranged in the purification cylinder. According to the oil-based drilling cutting pyrolysis treatment line, the purification barrel is additionally arranged on the smoke pipe connected into the tail end of the oil-based drilling cutting pyrolysis treatment line, the spraying pipe and the spraying heads are installed in the purification barrel for spraying, the ash content in smoke is reduced, the smoke purification degree is improved, the end cover is arranged to rotate relative to the purification barrel, the spraying distribution effect is improved, and the oil-based drilling cutting pyrolysis treatment line is more stable. Meanwhile, a connecting frame is mounted on an end cover to drive a stirring rod to rotate, so that sludge mixed with spraying water can be stirred in the purification cylinder, the phenomenon that the sludge sinks to the bottom and blocks is reduced, then gas and liquid are discharged through a smoke pipe and a blow-off pipe, and the purification environmental protection property is improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste oil-containing drill cuttings treatment, and in particular to an oil-based drill cuttings pyrolysis treatment line. Background Art

[0002] In the process of oil exploration and shale gas extraction, the use of oil-based drilling fluid will produce a large amount of oil-containing drill cuttings waste. The arbitrary stacking and discharge of these wastes will endanger human health and the ecological environment. Oil-containing drill cuttings contain a large amount of waste oil-based drilling fluid, which contains considerable energy value. Therefore, in the increasingly serious energy shortage in contemporary times, resource processing and effective utilization of oil-containing drill cuttings is an important strategy to achieve environmental protection and resource recovery.

[0003] Pyrolysis technology refers to the process of cracking organic matter by high temperature under anaerobic or oxygen-free conditions. It can be divided into traditional pyrolysis and microwave pyrolysis due to different heating methods. Oil-bearing drill cuttings contain a large amount of mineral oil, which is of great potential resource utilization value. The application of pyrolysis technology can not only reduce the pollutant content of oil-bearing drill cuttings, but also recover oil and realize the resource utilization of oil-bearing drill cuttings. Therefore, pyrolysis technology has gradually been valued and developed.

[0004] The pyrolysis processing line is mainly composed of a material conveying system, a pyrolysis reaction system, a cyclone separation system, an air preheating system, a pyrolysis oil condensation recovery system, a combustion system, a flue gas purification system, etc. The flue gas purification on the pyrolysis processing line is mainly used to treat the gas after exchanging heat in the primary air preheater. Because the ash content in the oil-based drill cuttings is large, and the flue gas carries small particles of rock cuttings, it is easy to cause blockage when passing through the traditional flue gas purification system. In this regard, an oil-based drill cuttings pyrolysis processing line is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides an oil-based drill cuttings pyrolysis processing line, which has the advantages of being able to easily separate solid particles in flue gas and reduce clogging.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an oil-based drill cuttings pyrolysis processing line, comprising a processing device and a purification cylinder connected to the processing device, the purification cylinder is connected to the processing device, and a spray structure, a sewage discharge structure and an exhaust structure for spraying and settling the flue gas are arranged in the purification cylinder;

[0007] A connecting ring with a circular groove recessed inward is fixedly installed on the top of the purification cylinder, a rotating ring with a C-shaped cross-section is rotatably installed inside the connecting ring, an end cover for closing the upper end of the purification cylinder is fixedly installed on the top of the rotating ring, the spray structure includes a spray pipe fixedly installed on the inner wall of the end cover by a bracket and a spray head fixedly installed on the outside of the spray pipe, and the outside of the connecting ring is connected to the water supply station through a water pipe.

[0008] Furthermore, the air inlet end of the air pump is connected to the purification cylinder, and the air outlet end of the air pump is connected to the smoke pipe.

[0009] Furthermore, the spray pipes are arranged in a mesh shape on the inner wall of the end cover.

[0010] Furthermore, a mounting frame is fixedly mounted on the outside of the purification cylinder, and a motor for pulling the end cover to rotate relative to the purification cylinder is fixedly mounted on the mounting frame, and a power end of the motor is fixedly connected to the end cover.

[0011] Furthermore, a sealing ring is embedded on the outer wall of the rotating ring, and a roller in contact with the inner wall of the connecting ring is installed on the outer wall of the rotating ring.

[0012] Furthermore, the sewage discharge structure includes a connecting frame fixedly connected to the inner top wall of the end cover, a connecting shaft rotatably connected to the lower end of the connecting frame, and a stirring rod fixedly connected to the connecting shaft.

[0013] Furthermore, a fixing seat is fixedly installed on the inner top wall of the end cover, the connecting frame is fixedly connected to the fixing seat, a gear frame is also fixedly installed on the inner bottom wall of the purification cylinder, and a traction wheel that is toothed and meshed with the gear frame is fixedly installed on the outside of the connecting shaft.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The oil-based drill cuttings pyrolysis processing line adds a purification cylinder to the smoke pipe connected to the rear end thereof, installs a spray pipe and a nozzle in the purification cylinder for spraying to reduce the ash content in the smoke, so that the smoke purification degree is improved, and the end cover is arranged to rotate relative to the purification cylinder to improve the distribution effect of the spraying. At the same time, a connecting frame is installed on the end cover to drive the stirring rod to rotate, so that the sludge mixed with the spray water can be stirred in the purification cylinder, reducing the sludge sinking and clogging phenomenon. Subsequently, the gas and liquid are discharged separately by connecting to the smoke pipe and the sewage pipe, which is beneficial to improving the purification and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2This is a schematic diagram of the structure of the purification cartridge of this application;

[0018] Figure 3 For this application Figure 2 A magnified view of the structure at center.

[0019] In the figure: 1. treatment equipment; 2. purification cylinder; 3. smoke pipe; 4. air pump; 5. connecting ring; 6. end cover; 7. rotating ring; 8. fixing seat; 9. spray pipe; 10. nozzle; 11. water pipe; 12. sealing ring; 13. roller; 14. mounting frame; 15. motor; 16. connecting frame; 17. rotating shaft; 18. stirring rod; 19. traction wheel; 20. gear frame; 21. sewage pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] See also Figure 1-3 In this embodiment, an oil-based drill cuttings pyrolysis processing line includes a processing device 1 and a purification cylinder 2 connected to the processing device 1. The purification cylinder 2 is connected to the low-temperature flue gas after heat exchange of the processing device 1 and is used to separate impurities contained in the flue gas.

[0022] In this embodiment, a spray structure, a sewage discharge structure and an exhaust structure for spraying and settling the smoke are arranged in the purification cylinder 2 , and the exhaust structure includes a smoke pipe 3 and an air pump 4 connected to the outside of the purification cylinder 2 .

[0023] Specifically, the air inlet end of the air pump 4 is connected to the purification cylinder 2, and the exhaust end of the air pump 4 is connected to the smoke pipe 3. Under the suction of the air pump 4, the smoke inside the purification cylinder 2 can be pumped into the smoke pipe 3 for discharge.

[0024] It should be noted that a connecting ring 5 with a circular groove recessed inward is fixedly installed on the top of the purification cylinder 2, a rotating ring 7 with a C-shaped cross-section is rotatably installed inside the connecting ring 5, and an end cover 6 for closing the upper end of the purification cylinder 2 is fixedly installed on the top of the rotating ring 7.

[0025] In this embodiment, the spray structure includes a spray pipe 9 fixedly mounted on the inner wall of the end cover 6 by a bracket and a spray head 10 fixedly mounted on the outside of the spray pipe 9. The spray pipe 9 is arranged in a mesh on the inner wall of the end cover 6, so that the area covered by the spray head 10 is increased, ensuring a wider spraying area.

[0026] In this embodiment, the outside of the connecting ring 5 is connected to the water supply station through the water pipe 11, so that the spray water can flow into the annular area surrounded by the rotating ring 7 and the connecting ring 5, and one end of the spray pipe 9 and the inner wall of the rotating ring 7 are connected to each other.

[0027] This design allows the spray water to evenly enter the mesh spray pipe 9 and be sprayed out from the nozzle 10, so that the low-temperature flue gas entering the purification cylinder 2 can be sprayed to remove fine particles and settle them into sludge.

[0028] It should be noted that a mounting frame 14 is fixedly mounted on the outside of the purification cylinder 2 , and a motor 15 for pulling the end cover 6 to rotate relative to the purification cylinder 2 is fixedly mounted on the mounting frame 14 , and the power end of the motor 15 is fixedly connected to the end cover 6 .

[0029] In a specific implementation, the motor 15 can drive the end cover 6 to rotate relative to the purification cylinder 2, so that the spray pipe 9 fixed in the end cover 6 rotates and sprays immediately, thereby increasing the spraying surface.

[0030] In this embodiment, a sealing ring 12 is embedded in the outer wall of the rotating ring 7, and the sealing ring 12 can seal the area surrounded by the rotating ring 7 and the connecting ring 5. At the same time, a roller 13 in contact with the inner wall of the connecting ring 5 is installed on the outer wall of the rotating ring 7. The roller 13 contacts the connecting ring 5, so that the rotational friction of the rotating ring 7 relative to the connecting ring 5 is reduced.

[0031] In this embodiment, the sewage discharge structure includes a connecting frame 16 fixedly connected to the inner top wall of the end cover 6, a connecting shaft 17 rotatably connected to the lower end of the connecting frame 16, and a stirring rod 18 fixedly connected to the connecting shaft 17;

[0032] Specifically, a fixing seat 8 is fixedly installed on the inner top wall of the end cover 6, and the connecting frame 16 is fixedly connected to the fixing seat 8. The connection through the fixing seat 8 can improve the installation stability of the connecting frame 16.

[0033] It should be noted that a gear rack 20 is fixedly mounted on the inner bottom wall of the purification cylinder 2, and a traction wheel 19 is fixedly mounted on the outside of the connecting shaft 17 and is toothed and meshed with the gear rack 20. By rotating the connecting shaft 17 around the gear rack 20, the connecting shaft 17 can rotate relative to the connecting rack 16.

[0034] The lower end side of the purification cylinder 2 in this embodiment is connected to a sewage pipe 21 for discharging sludge, and the sewage pipe 21 is provided with a valve for closing the sewage pipe 21 .

[0035] The working principle of the above embodiment is:

[0036] By sending the spray water in the water supply station into the annular cavity formed by the connecting ring 5 and the rotating ring 7 through the water pipe 11, the spray pipe 9 is directly connected to the rotating ring 7, so that the spray water can smoothly enter the spray pipe 9 to achieve distribution, and the spray water is evenly sprayed into the purification cylinder 2 through the numerous nozzles 10 on the spray pipe 9, so that the flue gas sent into the purification cylinder 2 can achieve dust reduction of dust particles, and then by controlling the motor 15, the motor 15 drives the end cover 6 fixedly connected on the power end to rotate relative to the purification cylinder 2, and at this time, the spray pipe 9 connected to the end cover 6 rotates accordingly, thereby improving the coverage rate of the nozzle 10, and the dust particles after dust reduction are mixed with the spray water as sludge and deposited at the bottom of the purification cylinder 2, and the two stirring rods 18 are driven to rotate through the end cover 6 and the connecting frame 16 to reduce the sludge deposition and blockage phenomenon, and then the sludge is discharged through the sewage pipe 21, and the purified air is sucked by the air pump 4 and discharged from the smoke pipe 3 connected to the air pump 4.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An oil-based drill cuttings pyrolysis processing line, comprising a processing device (1) and a purification cylinder (2) connected to the processing device (1), characterized in that: The purification cylinder (2) is connected to the processing equipment (1), and a spray structure, a sewage discharge structure and an exhaust structure for spraying and settling the flue gas are arranged in the purification cylinder (2); A connecting ring (5) having an annular groove recessed inwardly is fixedly mounted on the top of the purification cylinder (2); a rotating ring (7) having a C-shaped cross section is rotatably mounted inside the connecting ring (5); an end cover (6) for closing the upper end of the purification cylinder (2) is fixedly mounted on the top of the rotating ring (7); the spray structure comprises a spray pipe (9) fixedly mounted on the inner wall of the end cover (6) via a bracket and a spray head (10) fixedly mounted on the outside of the spray pipe (9); and the outside of the connecting ring (5) is connected to a water supply station via a water pipe (11).

2. The oil-based drill cuttings pyrolysis processing line according to claim 1, characterized in that: The air inlet end of the air pump (4) is connected to the purification cylinder (2), while the air outlet end of the air pump (4) is connected to the smoke pipe (3).

3. The oil-based drill cuttings pyrolysis processing line according to claim 1, characterized in that: The spray pipes (9) are arranged in a mesh shape on the inner wall of the end cover (6).

4. The oil-based drill cuttings pyrolysis processing line according to claim 1, characterized in that: A mounting frame (14) is also fixedly mounted on the outside of the purification cylinder (2), and a motor (15) is fixedly mounted on the mounting frame (14) for pulling the end cover (6) to rotate relative to the purification cylinder (2), and a power end of the motor (15) is fixedly connected to the end cover (6).

5. The oil-based drill cuttings pyrolysis processing line according to claim 1, characterized in that: A sealing ring (12) is embedded on the outer wall of the rotating ring (7), and a roller (13) is installed on the outer wall of the rotating ring (7) to contact the inner wall of the connecting ring (5).

6. The oil-based drill cuttings pyrolysis processing line according to claim 1, characterized in that: The sewage discharge structure comprises a connecting frame (16) fixedly connected to the inner top wall of the end cover (6), a connecting shaft (17) rotatably connected to the lower end of the connecting frame (16), and a stirring rod (18) fixedly connected to the connecting shaft (17).

7. The oil-based drill cuttings pyrolysis processing line according to claim 6, characterized in that: A fixing seat (8) is fixedly mounted on the inner top wall of the end cover (6), the connecting frame (16) is fixedly connected to the fixing seat (8), a gear frame (20) is also fixedly mounted on the inner bottom wall of the purification cylinder (2), and a traction wheel (19) is fixedly mounted on the outside of the connecting shaft (17) and is toothed and meshed with the gear frame (20).

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