Oil-based drilling debris pyrolysis treatment device

Abstract

The utility model discloses an oil -based rock flour pyrolysis processing apparatus relates to oil -based rock flour pyrolysis field, including base, outer tube and inner tube, the first mount pad and second mount pad are provided with on the base interval, the both ends fixed connection first mount pad and second mount pad of outer tube, the inner tube is movably worn in the outer tube, the both ends of inner tube are rotatably connected first mount pad and second mount pad, the annular heating cavity is formed between outer tube and inner tube, the circular array of electric heating sheet has in annular heating cavity, electric heating sheet installs on the inner wall of outer tube, the one end of inner tube is articulated with the hatch, and the circular array electric heating sheet can all -round, even heating to inner tube, avoids the problem that the existing device is not even heated. Meanwhile, the rotation of inner tube drives the oil -based rock flour movement in it, makes rock flour and inner tube wall fully contact, and the heating is more even, effectively guarantees the fullness of oil -based rock flour pyrolysis, improves the recovery rate of oiliness.

Description

Technical Field

[0001] This utility model relates to the field of oil-based rock cuttings pyrolysis technology, specifically to an oil-based rock cuttings pyrolysis treatment device. Background Technology

[0002] Oil-based rock cuttings generated during oil drilling contain large amounts of crude oil, heavy metals, and other harmful substances, making them industrial waste that urgently needs to be treated. Direct discharge of these materials would cause serious pollution to soil, water, and air, damaging the ecological environment and wasting the oil resources contained within.

[0003] Currently, the main methods for treating oil-based rock cuttings include solidification, incineration, and pyrolysis. Solidification involves mixing oil-based rock cuttings with a solidifying agent to form a solidified mass, which is then landfilled. However, this method only temporarily fixes the pollutants and does not fundamentally eliminate the pollution, posing a risk of secondary pollution and occupying significant land resources. While incineration can burn and decompose the organic matter in oil-based rock cuttings, it produces large amounts of toxic and harmful gases such as sulfur dioxide, nitrogen oxides, and dioxins, causing serious atmospheric pollution. Furthermore, the high temperatures generated during incineration can cause significant wear and tear on equipment.

[0004] Pyrolysis, as an environmentally friendly and resource-recovery technology, has attracted widespread attention. It involves heating oil-based rock cuttings to thermally decompose organic matter, converting it into recyclable oils, gases, and solid residues. However, existing oil-based rock cuttings pyrolysis devices still face numerous problems in practical applications. For example, uneven heating in the heating system leads to inconsistent heating of the oil-based rock cuttings, resulting in incomplete pyrolysis of some cuttings and affecting the recovery rate and treatment efficiency of oil substances. Furthermore, some devices have unreasonable feed and discharge structures, making operation cumbersome and reducing processing efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an oil-based rock cuttings pyrolysis treatment device to address the deficiencies of the prior art.

[0006] The purpose of this utility model is achieved through the following technical solution: an oil-based rock cuttings pyrolysis treatment device, comprising a base, an outer cylinder, and an inner cylinder. A first mounting seat and a second mounting seat are spaced apart on the base. The two ends of the outer cylinder are respectively fixedly connected to the first mounting seat and the second mounting seat. The inner cylinder is movably inserted inside the outer cylinder. The two ends of the inner cylinder are respectively rotatably connected to the first mounting seat and the second mounting seat. An annular heating cavity is formed between the outer cylinder and the inner cylinder. Electric heating elements are arranged in a circumferential array inside the annular heating cavity. The electric heating elements are installed on the inner wall of the outer cylinder. A hatch is hinged to one end of the inner cylinder.

[0007] Furthermore, the first mounting base is rotatably mounted on the base, and a cylinder is hinged to the base, with the telescopic shaft of the cylinder hinged to the second mounting base.

[0008] Furthermore, a U-shaped seat is fixed on the base, and a main shaft is rotatably inserted through the first mounting seat. The main shaft is located inside the U-shaped opening of the U-shaped seat and is fixedly connected to the U-shaped seat.

[0009] Furthermore, a lifting device is provided on the base, and the lifting device is located near the hatch. The lifting device includes a mounting frame and a conveying pipe. The mounting frame is fixed on the base, and the conveying pipe is inclined and fixed on the mounting frame. An auger shaft is rotatably installed inside the conveying pipe, and auger blades are fixedly fitted on the auger shaft. A motor is installed at one end of the conveying pipe, and the output shaft of the motor is connected to the auger shaft. A feed pipe is connected to the bottom end of the conveying pipe, and a discharge pipe is connected to the top end of the conveying pipe. When the end of the inner cylinder with the hatch is deflected to the top end, the discharge pipe discharges oil-based rock cuttings into the inner cylinder.

[0010] Furthermore, a guide pipe is slidably sleeved on the discharge pipe, and a guide cylinder is installed on the side wall of the conveying pipe, with the telescopic shaft of the guide cylinder connected to the guide pipe.

[0011] Furthermore, the hatch is equipped with multiple exhaust valves.

[0012] Furthermore, the inner wall of the inner cylinder is fixed with a plurality of ribs, which are evenly distributed along the circumference of the inner cylinder.

[0013] Furthermore, a drive motor is mounted on the second mounting base, the output shaft of the drive motor is connected to a gear, and an external gear ring is fixedly sleeved on the inner cylinder, the external gear ring meshing with the gear.

[0014] The beneficial effects of this utility model are:

[0015] 1. Within the annular heating cavity formed between the outer and inner cylinders, a circular array of electric heating elements provides comprehensive and uniform heating to the inner cylinder, avoiding the uneven heating problem found in existing devices. Simultaneously, the rotation of the inner cylinder causes the oil-based rock cuttings within it to move. Multiple ribs on the inner wall of the inner cylinder push the oil-based rock cuttings to tumble, ensuring full contact between the rock cuttings and the inner cylinder wall, resulting in more uniform heating. This effectively guarantees the sufficiency of the pyrolysis of the oil-based rock cuttings and improves the recovery rate of oily substances.

[0016] 2. Regarding the convenience and efficiency of feeding and discharging, the lifting device on the base, through the rotation of the auger shaft and auger blades, can transport oil-based rock cuttings from the feed pipe to the discharge pipe. When the end of the inner cylinder with the hatch deflects to the high end, the discharge pipe can smoothly discharge the rock cuttings into the inner cylinder, realizing automated feeding. The first mounting seat is rotatably mounted on the base, and in conjunction with the extension and retraction of the cylinder, it can drive the inner cylinder to deflect, facilitating the opening of the hatch for discharge after pyrolysis, simplifying the operation process and significantly improving processing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an oil-based rock cuttings pyrolysis treatment device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the inner cylinder in an oil-based rock cuttings pyrolysis treatment device according to the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0020] In the diagram, 1-base, 2-outer cylinder, 3-inner cylinder, 4-first mounting seat, 5-second mounting seat, 6-electric heating element, 7-door, 8-cylinder, 9-U-shaped seat, 10-main shaft, 11-mounting frame, 12-conveying pipe, 13-motor, 14-feed pipe, 15-discharge pipe, 16-guide pipe, 17-guide cylinder, 18-rib, 19-drive motor, 20-gear, 21-external gear ring. Detailed Implementation

[0021] Example 1

[0022] like Figures 1 to 3As shown, an oil-based rock cuttings pyrolysis treatment device includes a base 1, an outer cylinder 2, and an inner cylinder 3. A first mounting seat 4 and a second mounting seat 5 are spaced apart on the base 1. The first mounting seat 4 and the second mounting seat 5 are fixedly connected to both ends of the outer cylinder 2, respectively. The inner cylinder 3 is movably inserted inside the outer cylinder 2, and the first mounting seat 4 and the second mounting seat 5 are rotatably connected to both ends of the inner cylinder 3. An annular heating chamber is formed between the outer cylinder 2 and the inner cylinder 3. Electric heating elements 6 are arranged in a circumferential array within the annular heating chamber. The electric heating elements 6 are installed on the inner wall of the outer cylinder 2. A hatch 7 is hinged to one end of the inner cylinder 3. Opening the hatch 7 allows oil-based rock cuttings to be fed into the inner cylinder 3. The rotation of the inner cylinder 3 causes the oil-based rock cuttings inside to move, and the electric heating elements 6 provide the temperature required for pyrolysis. The electric heating elements 6 are installed on the outer cylinder 2, and the outer cylinder 2 is fixedly installed, thus preventing the inner cylinder 3 from affecting the electric heating elements 6. The circumferentially arrayed electric heating elements can provide all-round and uniform heating to the inner cylinder, avoiding the problem of uneven heating in existing devices. Secondly, multiple ribs 18 are fixed on the inner wall of the inner cylinder 3. The multiple ribs 18 are evenly distributed along the circumference of the inner cylinder 3. The rotation of the inner cylinder drives the movement of the oil-based rock cuttings inside. The multiple ribs on the inner wall can push the oil-based rock cuttings to turn over with the rotation of the inner cylinder, so that the rock cuttings are in full contact with the inner cylinder wall, the heating is more uniform, and the pyrolysis of oil-based rock cuttings is fully guaranteed, thereby improving the recovery rate of oil substances.

[0023] Furthermore, such as Figure 1 and Figure 2 As shown, a drive motor 19 is installed on the second mounting base 5. The output shaft of the drive motor 19 is connected to a gear 20. An outer gear ring 21 is fixedly sleeved on the inner cylinder 3. The outer gear ring 21 meshes with the gear 20. The drive motor 19 drives the gear 20 to rotate. The gear 20 drives the inner cylinder 3 to rotate through the outer gear ring 21, causing the oil-based rock debris inside the inner cylinder 3 to move and making the heating uniform.

[0024] Example 2

[0025] Based on Embodiment 1, the hatch 7 is equipped with multiple exhaust valves to discharge the waste gas generated by pyrolysis. The exhaust valve pipes can be connected to gas pipes for centralized treatment of waste gas, avoiding direct discharge of waste gas.

[0026] Example 3

[0027] Based on Example 2, such as Figure 1As shown, the first mounting seat 4 is rotatably mounted on the base 1. A cylinder 8 is hinged to the base 1. The telescopic shaft of the cylinder 8 is hinged to the second mounting seat 5. A U-shaped seat 9 is fixed on the base 1. A main shaft 10 is rotatably mounted on the first mounting seat 4. The main shaft 10 is located in the U-shaped opening of the U-shaped seat 9 and is fixedly connected to the U-shaped seat 9. The telescopic movement of the cylinder 8 drives the first mounting seat 4 to deflect around the axis of the main shaft 10, causing the inner cylinder 3 to deflect, which facilitates loading and unloading. Specifically, during loading, the end of the inner cylinder 3 with the hatch 7 deflects to the high end, making it easier for oil-based rock cuttings to enter the inner cylinder 3. During pyrolysis, the inner cylinder 3 deflects to a horizontal state, making the oil-based rock cuttings more evenly heated. During unloading, the hatch 7 is opened, and the end of the inner cylinder 3 with the hatch 7 deflects to the bottom end, thereby quickly discharging the oil-based rock cuttings from the inner cylinder 3.

[0028] Example 4

[0029] Based on Example 3, such as Figure 1 and Figure 3 As shown, a lifting device is installed on the base 1, and the lifting device is located near the hatch 7. The lifting device includes a mounting frame 11 and a conveying pipe 12. The mounting frame 11 is fixed on the base 1, and the conveying pipe 12 is fixedly mounted on the mounting frame 11 at an angle. An auger shaft is rotatably installed inside the conveying pipe 12, and auger blades are fixedly fitted on the auger shaft. A motor 13 is installed at one end of the conveying pipe 12, and the output shaft of the motor 13 is connected to the auger shaft. A feed pipe 14 is connected to the bottom end of the conveying pipe 12, and a discharge pipe 15 is connected to the top end of the conveying pipe 12. When the end of the inner cylinder 3 with the hatch 7 deflects to the top end... At this time, the discharge pipe 15 discharges oil-based rock cuttings into the inner cylinder 3. The feed pipe 14 is connected to the discharge port of the oil-based rock cuttings storage tank through a pipeline. A pump body is installed on the pipeline, so that the oil-based rock cuttings enter the conveying pipe 12 through the feed pipe 14. The motor 13 drives the auger shaft to rotate, and the auger shaft drives the auger blades to rotate, thereby outputting the oil-based rock cuttings from the lower end to the higher end. Finally, the oil-based rock cuttings are discharged from the discharge pipe 15. The end of the inner cylinder 3 with the hatch 7 is deflected to the higher end. At this time, the opening of the inner cylinder 3 with the hatch 7 is located on the discharge path of the discharge pipe 15, so that the oil-based rock cuttings can be smoothly added into the inner cylinder 3.

[0030] Furthermore, a guide pipe 16 is slidably sleeved on the discharge pipe 15, and a guide cylinder 17 is installed on the side wall of the conveying pipe 12. The telescopic shaft of the guide cylinder 17 is connected to the guide pipe 16. In order to avoid the problem of oil-based rock chips splashing during the feeding process, the guide pipe 16 is driven into the inner cylinder 3 by the guide cylinder 17, so that the oil-based rock chips directly enter the inner cylinder 3, avoiding the splashing of oil-based rock chips. After the feeding is completed, the guide pipe 16 is reset, which does not affect the deflection of the inner cylinder 3.

Claims

1. An oil-based rock cuttings pyrolysis treatment device, characterized in that, The device includes a base (1), an outer cylinder (2), and an inner cylinder (3). The base (1) is provided with a first mounting seat (4) and a second mounting seat (5) spaced apart. The two ends of the outer cylinder (2) are fixedly connected to the first mounting seat (4) and the second mounting seat (5), respectively. The inner cylinder (3) is movably inserted inside the outer cylinder (2). The two ends of the inner cylinder (3) are rotatably connected to the first mounting seat (4) and the second mounting seat (5), respectively. An annular heating cavity is formed between the outer cylinder (2) and the inner cylinder (3). Electric heating elements (6) are arranged in a circular array inside the annular heating cavity. The electric heating elements (6) are installed on the inner wall of the outer cylinder (2). A hatch (7) is hinged to one end of the inner cylinder (3).

2. The oil-based rock cuttings pyrolysis treatment device according to claim 1, characterized in that, The first mounting base (4) is rotatably mounted on the base (1), and a cylinder (8) is hinged on the base (1). The telescopic shaft of the cylinder (8) is hinged on the second mounting base (5).

3. The oil-based rock cuttings pyrolysis treatment device according to claim 2, characterized in that, A U-shaped seat (9) is fixed on the base (1), and a main shaft (10) is rotatably inserted on the first mounting seat (4). The main shaft (10) is located inside the U-shaped opening of the U-shaped seat (9) and is fixedly connected to the U-shaped seat (9).

4. The oil-based rock cuttings pyrolysis treatment device according to claim 2, characterized in that, A lifting device is provided on the base (1). The lifting device is located near the hatch (7). The lifting device includes a mounting frame (11) and a conveying pipe (12). The mounting frame (11) is fixed on the base (1). The conveying pipe (12) is fixedly mounted on the mounting frame (11). An auger shaft is rotatably installed inside the conveying pipe (12). An auger blade is fixedly mounted on the auger shaft. A motor (13) is installed at one end of the conveying pipe (12). The output shaft of the motor (13) is connected to the auger shaft. A feed pipe (14) is connected to the bottom end of the conveying pipe (12). A discharge pipe (15) is connected to the upper end of the conveying pipe (12). When the end of the inner cylinder (3) with the hatch (7) is deflected to the upper end, the discharge pipe (15) discharges oil-based rock cuttings into the inner cylinder (3).

5. The oil-based rock cuttings pyrolysis treatment device according to claim 4, characterized in that, The discharge pipe (15) is slidably fitted with a guide pipe (16), and the side wall of the conveying pipe (12) is equipped with a guide cylinder (17), the telescopic shaft of the guide cylinder (17) is connected to the guide pipe (16).

6. The oil-based rock cuttings pyrolysis treatment apparatus according to claim 1, characterized in that, The hatch (7) is equipped with multiple exhaust valves.

7. The oil-based rock cuttings pyrolysis treatment apparatus according to claim 1, characterized in that, The inner wall of the inner cylinder (3) is fixed with a plurality of ribs (18), which are evenly distributed along the circumferential direction of the inner cylinder (3).

8. The oil-based rock cuttings pyrolysis treatment apparatus according to claim 1, characterized in that, A drive motor (19) is installed on the second mounting base (5). The output shaft of the drive motor (19) is connected to a gear (20). An external gear ring (21) is fixedly sleeved on the inner cylinder (3). The external gear ring (21) meshes with the gear (20).

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