Innocent treatment test method and device for deoiling product of oil-based rock debris

Abstract

The invention relates to a harmless treatment test method and device for oil-based rock debris deoiling products, and belongs to the technical field of organic pollutant detection.The harmless treatment test method for the oil-based rock debris deoiling products comprises the following steps that layering multi-point sampling is conducted on treated tailings through a sampling mechanism, and a tailings mixed sample is obtained; pre-treating the tailing mixed sample to obtain a to-be-detected sample, and detecting and analyzing the to-be-detected sample by adopting a gas chromatograph to obtain the residual quantity of petroleum hydrocarbon in the to-be-detected sample. The method has the advantages that an operator can conveniently judge whether the residual amount of petroleum hydrocarbon in the treated tailings meets the preparation requirement or not, and the quality of a sintered brick or baking-free brick finished product is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of organic pollutant detection, in particular to a test method and device for harmless treatment of oil-based rock cuttings deoiling products. Background Art

[0002] Oil-based rock cuttings are an oily waste produced during the oil and gas drilling process. The solid residue in the de-oiled product is called tailings, which can be used to prepare sintered bricks or unfired bricks after further processing.

[0003] At present, due to the influence of process parameters, organic pollutants such as petroleum hydrocarbons will still remain in the treated tailings, and it is not convenient for operators to judge whether the residual amount of petroleum hydrocarbons in the treated tailings meets the preparation requirements. If the residual amount of petroleum hydrocarbon pollutants does not meet the preparation requirements, it will directly affect the quality of the finished products of sintered bricks or unfired bricks. Summary of the Invention

[0004] In order to facilitate operators to judge whether the residual petroleum hydrocarbons in the treated tailings meet the preparation requirements and ensure the quality of the finished sintered bricks or unfired bricks, the present invention provides a harmless treatment test method and device for oil-based rock cuttings deoiling products.

[0005] In a first aspect, the present invention provides a test method for harmless treatment of oil-based rock cuttings deoiling products, which adopts the following technical solution: A test method for harmless treatment of oil-based rock cuttings deoiling products comprises the following steps: The sampling mechanism is used to carry out multi-point sampling of the treated tailings to obtain a mixed tailings sample; Pre-treating the tailings mixed sample to obtain a sample to be tested; The sample to be tested is detected and analyzed by gas chromatography to obtain the residual amount of petroleum hydrocarbons in the sample to be tested.

[0006] Preferably, the sampling mechanism is used to perform multi-point sampling on the treated tailings to obtain a mixed tailings sample, which includes continuous sampling from bottom to top in layers using the sampling mechanism, with more than two sampling points in each layer, and all tailings in the sampling mechanism are mixed tailings samples.

[0007] Preferably, the pre-processing of the tailings mixed sample to obtain the sample to be tested comprises: Grinding and screening the tailings mixed sample to obtain a screened sample; drying the sieved sample to obtain a dried sample; Add the extractant to the dried sample for extraction, and the extracted extract is the sample to be tested.

[0008] Preferably, before the sampling mechanism is used to perform stratified multi-point sampling on the treated tailings to obtain a mixed tailings sample, the oil-based rock cuttings deoiled solid product is input into a direct-fired incinerator to reduce the loss on ignition of the oil-based rock cuttings deoiled solid product from 13%-16% to less than 9%, thereby obtaining a treated product, and the treated product is crushed to obtain treated tailings.

[0009] In a second aspect, the present invention provides a test device for harmless treatment of oil-based rock cuttings deoiling products, which adopts the following technical solution: A harmless treatment test device for oil-based rock cuttings deoiling products, used in the treatment test method, includes a storage tank and a sampling mechanism, the storage tank is used to store treated tailings, the sampling mechanism includes a sampling unit, a horizontal moving unit and a vertical moving unit, the sampling unit is used to perform layered multi-point sampling of the treated tailings in the storage tank, the horizontal moving unit is used to adjust the position of the sampling unit in the horizontal direction, and the vertical moving unit is used to adjust the position of the sampling unit in the vertical direction.

[0010] Preferably, the sampling unit includes a sampling barrel, an opening and closing plate, a partition plate, a rotating assembly and an adjusting assembly. The upper end of the sampling barrel has an inlet. The opening and closing plate is rotatably arranged on the sampling barrel. The opening and closing plate is used to open or close the inlet. The partition plate is rotatably arranged in the sampling barrel. The partition plate is used to separate the interior of the sampling barrel into two upper and lower parts or to make the interior of the sampling barrel connected. The rotating assembly is used to drive the opening and closing plate to rotate, and the adjusting assembly is used to adjust the rotation of the partition plate.

[0011] Preferably, the rotating assembly includes a first motor provided on the sampling cylinder and a rotating rod provided on the output shaft of the first motor, the opening and closing plate is connected to the rotating rod, and the rotating rod is located at an eccentric position of the opening and closing plate.

[0012] Preferably, the adjustment assembly includes a torsion spring, a limit block, a limit rod and an elastic pulling member, the rotation axis of the partition plate is perpendicular to the vertical axis direction of the sampling cylinder, the torsion spring is sleeved on the rotating shaft of the partition plate, the torsion spring is used to drive the partition plate to rotate to separate the interior of the sampling cylinder into two parts, the upper and lower parts, the limit block and the limit rod are respectively located on opposite sides of the rotating shaft of the partition plate, the limit block is provided on the inner wall of the sampling cylinder for abutting against the bottom wall of the partition plate, and when the bottom wall of the partition plate abuts against the limit block, the partition plate separates the interior of the sampling cylinder into two parts, the upper and lower parts; the limit rod and the rotating rod are along the sampling cylinder The axes of the limit rod are relatively distributed, and the limit rod is slidingly arranged on the sampling cylinder, and the sliding direction of the limit rod is perpendicular to the rotation axis of the partition plate. The limit rod is used to abut against the bottom wall of the partition plate away from the limit block. The limit rod has an arc surface, and the side of the opening and closing plate away from the rotating rod is used to slide and abut against the arc surface. When the opening and closing plate closes the inlet of the sampling cylinder, the opening and closing plate abuts against the limit rod, and the distance from the end of the limit rod close to the partition plate to the partition plate rotating shaft is greater than the distance from the outer edge of the partition plate to the partition plate rotating shaft, and the elastic pulling member is used to pull the limit rod to move toward the direction close to the partition plate.

[0013] Preferably, the elastic pulling member includes a tension spring for pulling the limiting rod to move toward the direction close to the partition plate, one end of the tension spring is arranged on the sampling cylinder, and the other end is arranged on the limiting rod.

[0014] Preferably, the sampling cylinder includes an upper cylinder, a middle cylinder and a lower cylinder, the inlet is located on the upper cylinder, the middle cylinder is arranged at the lower end of the upper cylinder, the lower cylinder is slidably connected to the bottom of the middle cylinder in the vertical direction, the opening and closing plate and the partition plate are both rotatably connected to the upper cylinder, the first motor is arranged on the upper cylinder, the cross-section of the middle cylinder is larger than the cross-section of the upper cylinder, a flexible sealing cloth is arranged between the lower cylinder and the middle cylinder along their own circumference, and a sliding part for adjusting the sliding of the lower cylinder is provided on the upper cylinder.

[0015] Preferably, the sliding member includes a fan-shaped gear sleeved on the rotating rod, an adjusting screw rotatably arranged on the upper cylinder, a transmission gear sleeved on the adjusting screw and a threaded cylinder threadedly sleeved on the adjusting screw, the rotation axis of the adjusting screw is parallel to the sliding direction of the lower cylinder, the fan-shaped gear is used to engage with the transmission gear, and the threaded cylinder is connected to the lower cylinder.

[0016] In summary, the present invention has the following beneficial technical effects: Before preparing sintered bricks or unfired bricks from the treated tailings, the treated tailings are first sampled, and a layered multi-point sampling method is adopted to ensure the representativeness of the samples. The obtained mixed tailings samples are then subjected to pre-treatments such as grinding, screening, drying, and extraction. The sample to be tested is then tested and analyzed by gas chromatography to obtain the residual amount of petroleum hydrocarbons in the treated tailings, which is convenient for operators to judge whether the residual amount of petroleum hydrocarbons in the treated tailings meets the preparation requirements. If the residual amount of petroleum hydrocarbon pollutants does not meet the preparation requirements, the treated tailings are subjected to secondary treatment to ensure the quality of the finished sintered bricks or unfired bricks; if the residual amount of petroleum hydrocarbon pollutants meets the preparation requirements, the tailings are transported to a processing plant to prepare sintered bricks or unfired bricks. The position of the sampling unit can be adjusted as needed through the vertical moving unit and the horizontal moving unit to facilitate stratified multi-point sampling, thereby ensuring the representativeness of the sample and the accuracy of the detection of the residual petroleum hydrocarbons in the treated tailings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic flow chart of a test method for harmless treatment of oil-based rock cuttings deoiling products according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of a test device for harmless treatment of oil-based rock cuttings deoiling products according to an embodiment of the present invention.

[0019] Figure 3 It is an exploded view of the partial structure of the test device for harmless treatment of oil-based rock cuttings deoiling products according to an embodiment of the present invention.

[0020] Figure 4 It is a structural schematic diagram of a sampling unit in a test device for harmless treatment of oil-based rock cuttings deoiling products according to an embodiment of the present invention.

[0021] Figure 5 It is a structural cross-sectional view of a sampling unit in a test device for harmless treatment of oil-based rock cuttings deoiling products according to an embodiment of the present invention.

[0022] Explanation of the accompanying drawings: 1. Storage tank; 2. Horizontal moving unit; 201. Turntable; 202. Mounting rod; 203. Ring gear; 204. Driving gear; 205. Second motor; 3. Vertical moving unit; 31. Third motor; 32. Driving screw; 4. Sampling cylinder; 41. Upper cylinder; 42. Middle cylinder; 43. Lower cylinder; 5. Opening and closing plate; 6. Partition plate; 7. Rotating assembly; 71. First motor; 72. Rotating rod; 8. Inlet; 9. Limit block; 10. Limit rod; 11. Arc surface; 12. Tension spring; 13. Flexible sealing cloth; 14. Fan gear; 15. Adjusting screw; 16. Transmission gear; 17. Threaded cylinder; 18. Notch; 19. Groove; 20. Mounting block; 21. Corrugated protective cover; 22. Protective cover; 23. First telescopic rod; 24. Second telescopic rod. DETAILED DESCRIPTION

[0023] The following combination Figure 1-Figure 5 The present invention is described in further detail.

[0024] The embodiment of the present invention discloses a test method for harmless treatment of oil-based rock cuttings deoiling products. Figure 1 A test method for harmless treatment of oil-based rock cuttings deoiling products comprises the following steps: S1: Use a sampling mechanism to perform multi-point sampling on the treated tailings to obtain a mixed tailings sample.

[0025] Specifically, a sampling mechanism is used to perform multi-point sampling on the treated tailings to obtain a mixed tailings sample, which includes continuous sampling from bottom to top in layers using the sampling mechanism, with more than two sampling points in each layer, and all tailings in the sampling mechanism are mixed tailings samples.

[0026] Furthermore, to ensure the representativeness of the sample, when sampling, the sampling mechanism can take the tailings from the bottom, middle and upper parts in sequence as needed.

[0027] By using the sampling mechanism to take samples from different layers and horizontal positions in the treated tailings, the representativeness of the samples and the accuracy of the test results can be ensured, and continuous sampling can greatly improve the test processing efficiency.

[0028] In other embodiments, the sampling mechanism may be used to continuously sample different layers in the vertical direction first, and then the position of the sampling mechanism on the horizontal plane may be adjusted to continue continuous sampling at multiple points in the vertical direction.

[0029] Specifically, before adopting a sampling mechanism to carry out stratified multi-point sampling on the treated tailings to obtain a mixed tailings sample, the oil-based rock cuttings deoiled solid product is input into a direct-fired incinerator to reduce the loss on ignition of the oil-based rock cuttings deoiled solid product from 13%-16% to less than 9%, thereby obtaining a treated product, which is then crushed by a ball mill to obtain treated tailings.

[0030] Among them, the oil-based rock cuttings deoiling solid product in the present invention is a solid product after thermal desorption treatment of oil-based rock cuttings. The direct-fired incinerator can effectively burn out the residual organic matter in the oil-based rock cuttings deoiling solid product, and reduce the residual amount of petroleum hydrocarbons in the treated tailings as much as possible. Among them, the direct-fired incinerator is sealed to achieve harmless treatment; and the ball milling device is used to make the treated tailings meet the particle standards of fly ash, and at the same time facilitate the detection and analysis of the residual amount of petroleum hydrocarbons.

[0031] S2: Pre-treat the tailings mixed sample to obtain a sample to be tested.

[0032] Specifically, the tailings mixed sample is pre-treated to obtain a sample to be tested, including: S21: grinding and screening the tailings mixed sample to obtain a screened sample; S22: drying and screening the sample to obtain a dried sample; S23: adding an extractant to the dried sample for extraction, and the extracted liquid is the sample to be tested.

[0033] In which, the drying temperature of the sample after screening in step S22 is less than 40° to avoid volatilization of hydrocarbons in the sample due to high temperature; the extraction agent in step S23 can be n-hexane or dichloromethane. In step 23, after the extraction of the extract, the extract can be purified and concentrated as needed.

[0034] Pre-treatment of tailings mixed samples can homogenize the samples and improve the accuracy of test analysis.

[0035] S3: Use gas chromatography to detect and analyze the sample to be tested to obtain the residual amount of petroleum hydrocarbons in the sample to be tested.

[0036] The implementation principle of the embodiment of the present invention is: before the treated tailings are used to prepare sintered bricks or unfired bricks, the treated tailings are first sampled, and a layered multi-point sampling method is adopted to ensure the representativeness of the sample. The obtained mixed tailings sample is then subjected to pre-treatment such as grinding, screening, drying, and extraction in turn, and then the test sample is tested by gas chromatography to obtain the residual amount of petroleum hydrocarbons in the treated tailings, so that the operating personnel can judge whether the residual amount of petroleum hydrocarbons in the treated tailings meets the preparation requirements. If the residual amount of petroleum hydrocarbon pollutants does not meet the preparation requirements, the treated tailings will be subjected to secondary treatment to ensure the quality of the finished sintered bricks or unfired bricks; if the residual amount of petroleum hydrocarbon pollutants meets the preparation requirements, it will be transported to the processing plant to prepare sintered bricks or unfired bricks.

[0037] The amount of tailings added when preparing different types of bricks is different. Specifically, the amount of tailings added when preparing sintered bricks generally does not exceed 10%, otherwise the sintered bricks will be difficult to shape, and a large amount of oil will accumulate in the oven, making the bricks white and brittle; and the amount of tailings added when preparing unfired bricks is about 25%.

[0038] Reference Figure 2 The present invention also discloses a harmless treatment test device for de-oiling products from oil-based rock cuttings. This device, used in the aforementioned treatment test method, includes a storage tank 1 and a sampling mechanism. Tank 1 is used to store treated tailings. Tank 1 has a circular cross-section and includes a feed port at its upper end and a discharge port with a valve at its lower end, facilitating the input and output of treated tailings.

[0039] Reference Figure 2 and Figure 3 The sampling mechanism is arranged on the storage tank 1, and the sampling mechanism includes a sampling unit, a horizontal moving unit 2 and a vertical moving unit 3. The sampling unit is used to perform layered multi-point sampling on the treated tailings in the storage tank 1, the horizontal moving unit 2 is used to adjust the position of the sampling unit in the horizontal direction, and the vertical moving unit 3 is used to adjust the position of the sampling unit in the vertical direction.

[0040] The position of the sampling unit can be adjusted as needed through the vertical moving unit 3 and the horizontal moving unit 2 to facilitate stratified multi-point sampling, ensure the representativeness of the sample, and facilitate the detection accuracy of the petroleum hydrocarbon residue in the treated tailings.

[0041] Reference Figure 2In order to facilitate the adjustment of the position of the sampling unit in the horizontal direction, the horizontal moving unit 2 includes a turntable 201, a mounting rod 202, a gear ring 203, a driving gear 204 and a second motor 205. The turntable 201 is rotatably arranged at the top of the storage tank 1, and the rotation axis of the turntable 201 is arranged in the vertical direction. The turntable 201 is concentric with the storage tank 1, and the feeding end is installed at the center position of the turntable 201; the mounting rod 202 is fixedly penetrated on the turntable 201 in the vertical direction, one end of the mounting rod 202 is located in the storage tank 1, and the other end is located outside the storage tank 1. The end of the mounting rod 202 located in the storage tank 1 is close to the bottom of the storage tank 1; the sampling unit is slidably connected to the mounting rod 202 in the vertical direction, and a notch 18 is opened on the turntable 201 for allowing the sampling unit to move in or out of the storage tank 1.

[0042] Reference Figure 2 The ring gear 203 is fixedly mounted on the turntable 201, and the ring gear 203 is concentrically arranged with the turntable 201. The second motor 205 is fixedly mounted on the top of the storage tank 1, and the driving gear 204 is coaxially fixed on the output shaft of the second motor 205. The driving gear 204 is engaged with the ring gear 203, wherein the second motor 205 is a reduction motor.

[0043] When the sampling unit needs to be driven to change its horizontal position, the second motor 205 is started, and the second motor 205 drives the driving gear 204 to rotate, and the driving gear 204 drives the ring gear 203 and the turntable 201 to rotate, so that the turntable 201 drives the mounting rod 202 and the sampling unit to move, so that the sampling unit can be moved to the desired position for stratified multi-point sampling as needed.

[0044] In other embodiments, the turntable 201, mounting rod 202, ring gear 203, drive gear 204, and second motor 205 may also be replaced with a sliding plate, a bracket, and a driving source. The sliding plate slides horizontally on the top of the storage tank 1, and the bracket is fixedly mounted on the sliding plate, with one end of the bracket located inside the storage tank 1 and the other end located outside the storage tank 1. The sampling unit slides vertically on the bracket, and the driving source is used to drive the sliding plate to slide. The driving source can be a pneumatic cylinder, an electric cylinder, etc. The driving source drives the sliding plate to move, and the sliding plate drives the bracket and the sampling unit to move. This also allows the sampling unit to be moved to a desired position as needed for multi-point sampling.

[0045] Reference Figure 3 and Figure 4In order to facilitate the adjustment of the position of the sampling unit in the vertical direction, a groove 19 is opened on the mounting rod 202, and a mounting block 20 is slidably connected to the groove 19 along the vertical direction. The sampling unit is fixedly connected to the mounting block 20, and the vertical moving unit 3 includes a third motor 31 and a driving screw 32. The third motor 31 is fixedly mounted on the top of the mounting rod 202, and the driving screw 32 is rotatably set in the groove 19. The rotation axis of the driving screw 32 is parallel to the length direction of the mounting rod 202. The driving screw 32 is coaxially fixed with the output shaft of the third motor 31, and the mounting block 20 is threadedly sleeved on the driving screw 32.

[0046] When the position of the sampling unit needs to be adjusted in the vertical direction, the third motor 31 is started, the third motor 31 drives the driving screw 32 to rotate, and the driving screw 32 drives the mounting block 20 to move the sampling unit, so that the sampling unit can be adjusted to a desired height as needed.

[0047] Reference Figure 3 and Figure 4 In order to reduce the impact of the processed tailings on the driving screw 32, corrugated protective covers 21 are distributed on the opposite sides of the mounting block 20. The corrugated protective covers 21 are movably sleeved outside the driving screw 32. One end of the corrugated protective cover 21 is fixed to the side wall of the groove 19, and the other end is fixed to the mounting block 20, thereby separating the driving screw 32 from the tailings and not easily affecting the threaded fit between the mounting block 20 and the driving screw 32.

[0048] In other embodiments, the third motor 31 and the screw rod can also be replaced with a winch and a steel cable. Two winches are mounted at the top of the mounting rod 202, with one steel cable corresponding to each winch. One end of the steel cable is wound around the corresponding winch, and the other end is fixed to the mounting block 20. A guide pulley is mounted at the bottom of the mounting rod 202, and one of the steel cables is slidably connected to the guide pulley. When the two winches are activated, one winch reels in the corresponding steel cable, and the other winch unwinds the corresponding steel cable. Through the cooperation of the steel cables on both sides, the mounting block 20 can also drive the sampling unit to move in the vertical direction.

[0049] Reference Figure 4 and Figure 5 In order to facilitate the multi-point sampling of the tailings after treatment in the storage tank 1, the sampling unit includes a sampling cylinder 4, an opening and closing plate 5, a partition plate 6, a rotating component 7 and an adjusting component. The sampling cylinder 4 is fixedly connected to the mounting block 20, and the sampling cylinder 4 as a whole can pass through the notch 18 (refer to Figure 2), and will not get stuck at the notch 18; the sampling barrel 4 has a circular cross-section, and the upper end of the sampling barrel 4 has an inlet 8 to facilitate the entry of tailings materials; the opening and closing plate 5 is rotatably arranged at the upper end of the sampling barrel 4, and the opening and closing plate 5 is used to open or close the inlet 8. The cross-section of the opening and closing plate 5 is larger than the cross-section of the inlet 8. Specifically, the rotation axis of the opening and closing plate 5 is parallel to the vertical axis of the sampling barrel 4, wherein the sampling barrel 4 is connected to the mounting rod 202 (refer to Figure 2 ) has a certain distance to ensure that the rotation of the opening and closing plate 5 will not interfere with the installation rod 202.

[0050] Reference Figure 4 and Figure 5 The partition plate 6 is rotatably arranged in the sampling tube 4, and the rotation axis of the partition plate 6 is perpendicular to the vertical axis direction of the sampling tube 4. The partition plate 6 is used to separate the interior of the sampling tube 4 into two parts, upper and lower parts, or to make the interior of the sampling tube 4 connected. The rotating component 7 is used to drive the opening and closing plate 5 to rotate, and the adjusting component is used to adjust the rotation of the partition plate 6.

[0051] After the hopper 4 is opened, the hopper 4 is opened and the hopper 4 is opened, and the hopper 4 is opened and the hopper 4 is opened.

[0052] Reference Figure 4 and Figure 5The sampling tube 4 comprises an upper body 41, a middle body 42, and a lower body 43. The upper body 41, the middle body 42, and the lower body 43 are arranged in order from top to bottom. The inlet 8 is located on the upper body 41, the middle body 42 is integrally formed at the lower end of the upper body 41, and the lower body 43 is arranged below the middle body 42. The opening and closing plate 5 is rotatably arranged above the upper body 41, and the partition plate 6 is rotatably connected to the upper body 41. The cross-section of the middle body 42 is larger than that of the upper body 41, so as to expand the storage space of the sampling tube 4 and shorten the length of the sampling tube 4. The ends of the middle body 42 and the lower body 43 that are away from each other have a tapered section. The diameters of the two tapered sections of the middle body 42 and the lower body 43 decrease in the direction away from each other, thereby helping to reduce the resistance during the downward movement of the sampling tube 4. A discharge plate (not shown in the figure) is detachably connected to the conical surface of the lower body 43 by screws. After sampling is completed, the discharge plate is opened to facilitate sample collection.

[0053] Reference Figure 4 and Figure 5 In order to facilitate the rotation of the opening and closing plate 5, the rotating assembly 7 includes a first motor 71 and a rotating rod 72. The first motor 71 is fixedly mounted on the outer wall of the upper cylinder 41. The first motor 71 is a micro reduction motor. The rotating rod 72 is coaxially fixed on the output shaft of the first motor 71. The opening and closing plate 5 is connected to the rotating rod 72, and the rotating rod 72 is located at an eccentric position of the opening and closing plate 5.

[0054] When the inlet 8 needs to be opened or closed, the first motor 71 is started, and the first motor 71 drives the rotating rod 72 to rotate the opening and closing plate 5, thereby opening and closing the inlet 8 as needed.

[0055] Reference Figure 4 and Figure 5 In order to protect the first motor 71 , a protective cover 22 is fixed on the outer wall of the upper cylinder 41 . The protective cover 22 is arranged outside the first motor 71 , thereby protecting the first motor 71 and reducing the impact of tailings on the use of the first motor 71 .

[0056] Reference Figure 4 and Figure 5 In order to facilitate the adjustment of the rotation of the partition plate 6, the adjustment assembly includes a torsion spring, a limit block 9, a limit rod 10 and an elastic pulling member. The torsion spring is movably mounted on the rotating shaft of the partition plate 6. One end of the torsion spring is fixed to the inner wall of the upper cylinder 41, and the other end is fixed to the partition plate 6. The torsion spring is used to drive the partition plate 6 to rotate to separate the interior of the sampling cylinder 4 into two parts, upper and lower. When the torsion spring is in a natural state, the partition plate 6 separates the interior of the sampling cylinder 4 into two parts, upper and lower.

[0057] Reference Figure 4 and Figure 5The limit block 9 and the limit rod 10 are located on opposite sides of the partition plate 6's rotation axis. Specifically, the limit block 9 is located on the side of the partition plate 6's rotation axis closest to the rotation rod 72. The limit block 9 is fixed to the inner wall of the upper cylinder 41 and is used to abut the bottom wall of the partition plate 6. When the torsion spring is in the natural state, the bottom wall of the partition plate 6 abuts the limit block 9. Specifically, when the partition plate 6 abuts the limit block 9, the partition plate 6 is tilted, and the tilt angle of the partition plate 6 is less than 10°. Reference Figure 4 and Figure 5 The limit rod 10 and the rotating rod 72 are relatively distributed along the vertical axis of the upper cylinder 41, that is, the connecting line of the rotating rod 72 and the limit rod 10 passes through the center of the upper cylinder 41, and the limit rod 10 is L-shaped. The limit rod 10 is slidably set on the sampling cylinder 4, and the sliding direction of the limit rod 10 is perpendicular to the rotation axis of the partition plate 6. One end of the limit rod 10 is slidably passed through the upper cylinder 41, and the other end extends to near the inlet 8. A first telescopic rod 23 is fixed between the limit rod 10 and the outer wall of the upper cylinder 41. The telescopic direction of the first telescopic rod 23 is parallel to the sliding direction of the limit rod 10, thereby guiding the sliding of the limit rod 10; the limit rod 10 is used to abut against the bottom wall of the partition plate 6 away from the limit block 9. When the torsion spring is in a natural state, the limit rod 10 is driven to move into the upper cylinder 41, and the end of the limit rod 10 abuts against the bottom wall of the partition plate 6 away from the limit block 9, thereby limiting the partition plate 6 and making it convenient for the partition plate 6 to receive the tailings; when the limit rod 10 is driven to move out from under the partition plate 6, the partition plate 6 is flipped upward at one end close to the limit block 9 under the action of the gravity of the tailings material, so that the tailings on the partition plate 6 fall into the lower cylinder 43.

[0058] Reference Figure 4 and Figure 5 The end of the limit rod 10 away from the partition plate 6 has a curved surface 11. Specifically, the end of the limit rod 10 away from the partition plate 6 can be designed to be spherical, and the side of the opening and closing plate 5 away from the rotating rod 72 is used to slide and abut against the curved surface 11. When the opening and closing plate 5 closes the inlet 8 of the sampling cylinder 4, the opening and closing plate 5 abuts against the arc of the limit rod 10, and the distance from the end of the limit rod 10 close to the partition plate 6 to the rotating axis of the partition plate 6 is greater than the distance from the outer edge of the partition plate 6 to the rotating axis of the partition plate 6. The elastic pulling member is provided on the upper cylinder 41, and the elastic pulling member is used to pull the limit rod 10 toward the direction close to the partition plate 6. When the elastic pulling member is in a natural state, the distance from the end of the limit rod 10 close to the partition plate 6 to the rotating axis of the partition plate 6 is less than the distance from the outer edge of the partition plate 6 to the rotating axis of the partition plate 6.

[0059] Reference Figure 4 and Figure 5Furthermore, to facilitate pulling the limiting rod 10 toward the direction close to the partition plate 6, the elastic pulling member includes a tension spring 12, which is movably mounted on the first telescopic rod 23. One end of the tension spring 12 is fixed to the outer wall of the upper cylinder 41, and the other end is fixed to the limiting rod 10. In other embodiments, the tension spring 12 can be replaced by an elastic rope.

[0060] When the opening and closing plate 5 completely closes the inlet 8, the side of the opening and closing plate 5 away from the rotating rod 72 abuts against the end of the limiting rod 10 away from the partition plate 6. At this time, the limiting rod 10 is in a state away from the upper cylinder 41, and the tension spring 12 is in a stretched state. The rotation of the partition plate 6 is not restricted by the limiting rod 10, so that when the opening and closing plate 5 closes the inlet 8, the partition plate 6 can rotate under the gravity of the tailings, causing the tailings material to fall into the lower cylinder 43, and then the partition plate 6 is reset under the action of the torsion spring.

[0061] When the opening and closing plate 5 gradually opens the inlet 8, and the opening and closing plate 5 is separated from the edge of the rotating rod 72 and the end of the limiting rod 10, the limiting rod 10 is close to the upper cylinder 41 under the tension of the tension spring 12, so that the end of the limiting rod 10 is located below the partition plate 6 and abuts against the partition plate 6, thereby limiting the rotation of the partition plate 6, so that the partition plate 6 can receive a certain amount of tailings material.

[0062] Reference Figure 4 and Figure 5 The lower cylinder 43 slides vertically beneath the middle cylinder 42, with a gap of less than 2 mm between the outer wall of the lower cylinder 43 and the inner wall of the middle cylinder 42. A flexible sealing cloth 13 is circumferentially disposed between the lower cylinder 43 and the middle cylinder 42, ensuring a seal between the two bodies despite relative sliding. To facilitate guiding the sliding of the lower cylinder 43, multiple second telescopic rods 24 are fixed between the two inner conical surfaces of the middle cylinder 42 and the lower cylinder 43. The telescopic direction of the second telescopic rods 24 is parallel to the sliding direction of the lower cylinder 43. A sliding member is provided on the upper cylinder 41 to adjust the sliding of the lower cylinder 43.

[0063] Reference Figure 4 and Figure 5To facilitate the sliding adjustment of the lower cylinder 43, the sliding member includes a sector gear 14, an adjusting screw 15, a transmission gear 16, and a threaded barrel 17. The sector gear 14 is fixedly mounted on the rotating rod 72, and the adjusting screw 15 is rotatably mounted on the protective cover 22 outside the upper cylinder 41. The rotation axis of the adjusting screw 15 is parallel to the sliding direction of the lower cylinder 43. The transmission gear 16 is fixedly mounted on the adjusting screw 15 and located inside the protective cover 22. The sector gear 14 is used to mesh with the transmission gear 16. The threaded barrel 17 is threadedly mounted on the outside of the adjusting screw 15 and slidably mounted on the protective cover 22. The lower end of the threaded barrel 17 is fixedly connected to the lower cylinder 43. To ensure that the cooperation between the adjusting screw 15 and the threaded barrel 17 is not affected by the tailings, only the lower end of the adjusting screw 15 has a threaded end, thereby separating the threaded end of the adjusting screw 15 from the tailings.

[0064] During the process of opening and closing the inlet 8, the opening and closing plate 5 always rotates in the same direction, that is, the opening and closing plate 5 rotates one circle from opening the inlet 8 to closing the inlet 8; each time the opening and closing plate 5 opens the inlet 8, the sector gear 14 drives the transmission gear 16 to rotate once, causing the adjusting screw 15 to drive the threaded barrel 17 to gradually move downward, thereby gradually expanding the internal storage space of the sampling barrel 4, so that the lower barrel 43 can gradually move downward according to the amount of sampling, on the one hand facilitating continuous sampling, and on the other hand facilitating the collection of tailings at the bottom of the storage tank 1, reducing the influence of the length of the sampling barrel 4 on the collection of tailings at the bottom of the storage tank 1. Through the threaded engagement between the threaded barrel 17 and the adjusting screw 15, the position of the lower barrel 43 can be relatively fixed when the adjusting screw 15 is not rotating.

[0065] The implementation principle of the embodiment of the present invention is as follows: when sampling is required, the second motor 205 is started, and the mounting rod 202 and the sampling tube 4 are moved to the desired position through the cooperation of the driving gear 204 and the ring gear 203, and then the third motor 31 is started, and the third motor 31 drives the driving screw 32 to rotate, and the driving screw 32 drives the mounting block 20 to drive the sampling tube 4 from the notch 18 to the bottom of the treated tailings in the storage tank 1, and then the first motor 71 is started, and the first motor 71 drives the opening and closing plate 5 to rotate in the direction away from the inlet 8, opening the inlet 8, and the opening and closing plate 5 is disengaged from the limiting rod 10, and the end of the limiting rod 10 extends under the partition plate 6 to limit the rotation of the partition plate 6; at the same time, The rotating rod 72 drives the sector gear 14 to rotate, and through the cooperation of the sector gear 14 and the transmission gear 16, the adjusting screw 15 rotates to drive the threaded cylinder 17 to drive the lower cylinder 43 to move down a certain distance; then the tailings at the bottom of the storage tank 1 enters the upper cylinder 41 and is located above the partition plate 6, and then continues to drive the opening and closing plate 5 to rotate in the same direction, and the opening and closing plate 5 gradually closes the inlet 8. The edge of the opening and closing plate 5 away from the rotating rod 72 abuts against the arc surface 11 of the limit rod 10, pushing the limit rod 10 gradually away from the partition plate 6 until the opening and closing plate 5 completely closes the inlet 8, and the limit rod 10 is separated from the partition plate 6. At this time, the partition plate 6 flips over under the action of the gravity of the tailings material, causing the tailings material to fall into the lower cylinder 43 for storage.

[0066] Then start the second motor 205, and through the cooperation of the driving gear 204 and the ring gear 203, move the mounting rod 202 and the sampling tube 4 to other sampling points on the same horizontal plane, and repeat the above sampling steps to take samples until the sampling of multiple sampling points on the same plane at the bottom of the storage tank 1 is completed.

[0067] Then the third motor 31 is driven to start, the third motor 31 drives the driving screw 32 to rotate, the driving screw 32 drives the mounting block 20 to drive the sampling tube 4 to move to the middle of the tailings in the storage tank 1, and the sampling steps are repeated to take samples at multiple sampling points on the same plane in the middle; then the third motor 31 drives the driving screw 32 to rotate, the driving screw 32 drives the mounting block 20 to move the sampling tube 4 to the top of the tailings in the storage tank 1, and then samples are taken at multiple sampling points on the top of the storage tank 1 in turn.

[0068] After sampling is completed, the driving screw 32 is driven to rotate by the third motor 31, and the driving screw 32 drives the mounting block 20 to move the sampling tube 4 out of the storage tank 1, and then the discharge plate on the lower cylinder 43 is opened to obtain the tailings mixed sample; the sampling mechanism of the present invention can realize continuous layered multi-point sampling, thereby ensuring the representativeness of the sample and the test accuracy of the petroleum hydrocarbon residue.

[0069] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A test method for harmless treatment of oil-based rock cuttings deoiling products, characterized in that: The steps include: The sampling mechanism is used to carry out multi-point sampling of the treated tailings to obtain a mixed tailings sample; Pre-treating the tailings mixed sample to obtain a sample to be tested; The sample to be tested is detected and analyzed by gas chromatography to obtain the residual amount of petroleum hydrocarbons in the sample to be tested.

2. The method for harmless treatment of oil-based rock cuttings deoiling products according to claim 1, characterized in that: The method of using a sampling mechanism to perform multi-point sampling on the treated tailings to obtain a mixed tailings sample includes using the sampling mechanism to perform continuous sampling from bottom to top, with more than two sampling points in each layer, and all tailings in the sampling mechanism are mixed tailings samples.

3. The method for harmless treatment of oil-based rock cuttings deoiling products according to claim 1, characterized in that: The pre-processing of the tailings mixed sample to obtain the sample to be tested comprises: Grinding and screening the tailings mixed sample to obtain a screened sample; drying the sieved sample to obtain a dried sample; Add the extractant to the dried sample for extraction, and the extracted extract is the sample to be tested.

4. The method for harmless treatment of oil-based rock cuttings deoiling products according to claim 1, characterized in that: Before the sampling mechanism is used to perform multi-point sampling on the treated tailings to obtain a mixed tailings sample, the oil-based rock cuttings deoiled solid product is input into a direct-fired incinerator to reduce the loss on ignition of the oil-based rock cuttings deoiled solid product from 13%-16% to less than 9%, thereby obtaining a treated product, which is then crushed to obtain treated tailings.

5. A test device for harmless treatment of oil-based rock cuttings deoiling products, used in the treatment test method according to any one of claims 1 to 4, characterized in that: The invention comprises a storage tank (1) and a sampling mechanism, wherein the storage tank (1) is used for storing treated tailings, and the sampling mechanism comprises a sampling unit, a horizontal moving unit (2) and a vertical moving unit (3), wherein the sampling unit is used for performing layered multi-point sampling on the treated tailings in the storage tank (1), the horizontal moving unit (2) is used for adjusting the position of the sampling unit in the horizontal direction, and the vertical moving unit (3) is used for adjusting the position of the sampling unit in the vertical direction.

6. The harmless treatment test device for oil-based rock cuttings deoiling products according to claim 5, characterized in that: The sampling unit comprises a sampling barrel (4), an opening and closing plate (5), a partition plate (6), a rotating assembly (7) and an adjusting assembly. The upper end of the sampling barrel (4) is provided with an inlet (8). The opening and closing plate (5) is rotatably arranged on the sampling barrel (4). The opening and closing plate (5) is used to open or close the inlet (8). The partition plate (6) is rotatably arranged in the sampling barrel (4). The partition plate (6) is used to separate the interior of the sampling barrel (4) into upper and lower parts or to make the interior of the sampling barrel (4) in a connected state. The rotating assembly (7) is used to drive the opening and closing plate (5) to rotate. The adjusting assembly is used to adjust the rotation of the partition plate (6).

7. The harmless treatment test device for oil-based rock cuttings deoiling products according to claim 6, characterized in that: The rotating assembly (7) comprises a first motor (71) arranged on the sampling cylinder (4) and a rotating rod (72) arranged on the output shaft of the first motor (71); the opening and closing plate (5) is connected to the rotating rod (72); and the rotating rod (72) is located at an eccentric position of the opening and closing plate (5).

8. The harmless treatment test device for oil-based rock cuttings deoiling products according to claim 7, characterized in that: The adjusting assembly includes a torsion spring, a limit block (9), a limit rod (10) and an elastic pulling member. The rotation axis of the partition plate (6) is perpendicular to the vertical axis direction of the sampling tube (4). The torsion spring is sleeved on the rotation axis of the partition plate (6). The torsion spring is used to drive the partition plate (6) to rotate so as to separate the interior of the sampling tube (4) into two parts, the upper and lower parts. The limit block (9) and the limit rod (10) are respectively located on opposite sides of the rotation axis of the partition plate (6). The limit block (9) is set on the inner wall of the sampling tube (4) and is used to abut against the bottom wall of the partition plate (6). When the bottom wall of the partition plate (6) abuts against the limit block (9), the partition plate (6) separates the interior of the sampling tube (4) into two parts, the upper and lower parts. The limit rod (10) and the rotating rod (72) are relatively distributed along the axis of the sampling tube (4). The positioning rod (10) is slidably arranged on the sampling cylinder (4), and the sliding direction of the limiting rod (10) is perpendicular to the rotation axis of the partition plate (6). The limiting rod (10) is used to abut against the bottom wall of the partition plate (6) away from the limiting block (9). The limiting rod (10) has an arc surface (11), and the side of the opening and closing plate (5) away from the rotating rod (72) is used to slide and abut against the arc surface (11). When the opening and closing plate (5) closes the inlet (8) of the sampling cylinder (4), the opening and closing plate (5) abuts against the limiting rod (10), and the distance from the end of the limiting rod (10) close to the partition plate (6) to the partition plate (6) rotation axis is greater than the distance from the outer edge of the partition plate (6) to the partition plate (6) rotation axis. The elastic pulling member is used to pull the limiting rod (10) to move toward the partition plate (6).

9. The harmless treatment test device for oil-based rock cuttings deoiling products according to claim 7, characterized in that: The sampling cylinder (4) comprises an upper cylinder (41), a middle cylinder (42) and a lower cylinder (43), the inlet (8) is located on the upper cylinder (41), the middle cylinder (42) is arranged at the lower end of the upper cylinder (41), the lower cylinder (43) is slidably connected to the lower part of the middle cylinder (42) in the vertical direction, the opening and closing plate (5) and the partition plate (6) are both rotatably connected to the upper cylinder (41), the first motor (71) is arranged on the upper cylinder (41), the cross section of the middle cylinder (42) is larger than the cross section of the upper cylinder (41), a flexible sealing cloth (13) is arranged between the lower cylinder (43) and the middle cylinder (42) along their own circumference, and a sliding member for adjusting the sliding of the lower cylinder (43) is provided on the upper cylinder (41).

10. The harmless treatment test device for oil-based rock cuttings deoiling products according to claim 9, characterized in that: The sliding member comprises a sector gear (14) sleeved on the rotating rod (72), an adjusting screw (15) rotatably arranged on the upper cylinder (41), a transmission gear (16) sleeved on the adjusting screw (15), and a threaded barrel (17) threadedly sleeved on the adjusting screw (15), wherein the rotation axis of the adjusting screw (15) is parallel to the sliding direction of the lower cylinder (43), the sector gear (14) is used to mesh with the transmission gear (16), and the threaded barrel (17) is connected to the lower cylinder (43).

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