A kind of equipment and method for harmless treatment of oil mining sludge

Abstract

The present invention relates to the field of oil extraction, and in particular to a device and method for harmless treatment of oil extraction sludge. The device includes a treatment box, a mud storage cylinder, a liquid receiving cover, a liquid leakage part, a circulation channel, a treatment agent storage tank, a treatment agent control component and a gas collection tank. A partition is arranged inside the treatment box; a sludge pushing part 1 is arranged on the mud storage cylinder; the liquid receiving cover is connected to the mud storage cylinder; the liquid leakage part is located between the mud storage cylinder and the liquid receiving cover; a sludge pushing part 2 is arranged on the circulation channel; and the treatment agent control component is located between adjacent circulation channels. In the process of clockwise / counterclockwise movement of sludge, the present invention completes the recovery of oil, the action of sludge treatment agent, sludge pyrolysis and drying recovery, thereby achieving thorough and efficient harmless treatment of sludge, saving energy and protecting the environment, and effectively reducing environmental pollution caused by oil extraction.

Description

Technical Field

[0001] The present invention relates to the field of oil production, and in particular to equipment and a method for harmless treatment of oil production sludge. Background Art

[0002] The sludge generated during oil extraction, known as oily sludge, contains a complex composition consisting of large amounts of aged crude oil, waxes, asphaltenes, colloids, and suspended solids. It may also contain harmful substances such as bacteria, parasites, salts, acidic gases, corrosion products, and heavy metal salts (such as copper, zinc, chromium, and mercury), as well as odorous and toxic substances such as benzene, phenols, anthracene, and pyrene. If discharged directly into the environment without treatment, these harmful substances in oily sludge can seep into the soil and groundwater, causing long-term and irreversible damage to the ecological environment. This pollution not only affects plant growth but can also affect the health of humans and other organisms through the food chain.

[0003] A Chinese patent document with authorization publication number CN117285216B discloses a device and method for harmless treatment of petroleum extraction sludge. The device includes a device box provided with a discharge port, and also includes: a treatment box, fixedly installed at the upper end of the device box, wherein a conveyor belt is fixedly installed in the device box, a heating plate is fixedly installed in the device box, the upper end surface of the heating plate is affixed to the inner wall of the conveyor belt, and a stirring assembly is provided in the treatment box; an L-shaped flat discharge pipe, fixedly connected to the bottom of the treatment box, wherein the end of the L-shaped flat discharge pipe is fixedly connected to a flat inclined pipe extending to the input end of the conveyor belt.

[0004] The above-mentioned technology for harmless treatment of oil extraction sludge has the following deficiencies: 1. There is a lack of recovery of usable components such as oil in the sludge. Direct treatment of the sludge easily leads to waste of oil resources and increases the amount of treatment agent used; 2. Treatment agents are added and heated during the overall stirring of the oil. The overall centralized treatment method easily causes uneven mixing of the treatment agent and uneven heating of the sludge, and the treatment effect cannot be guaranteed; 3. The pipeline (L-shaped flat discharge pipe) is easily blocked during the sludge discharge process, resulting in poor sludge discharge. Summary of the Invention

[0005] In response to the problems existing in the background technology, a device and method for harmless treatment of oil extraction sludge are proposed. During the clockwise / counterclockwise movement of the sludge, the oil recovery - sludge treatment agent action - sludge pyrolysis - drying and recovery are completed, thereby achieving thorough and efficient harmless treatment of the sludge, saving energy and protecting the environment, and effectively reducing environmental pollution caused by oil extraction.

[0006] The present invention proposes a harmless treatment device for petroleum mining sludge, including a treatment box, a mud storage cylinder, a liquid receiving cover, a liquid leakage part, a circulation channel, a treatment agent storage tank, a treatment agent control component and a gas collection tank. The top plate of the treatment box is rotatably arranged, with a feed port, and the interior is divided into a treatment chamber at the upper end and an installation chamber at the lower end by a rotatable partition; the treatment chamber is heatable; the mud storage cylinder is set through the partition, with the upper and lower ends open, and a sludge pushing part that applies force in the vertical direction is set inside; the liquid receiving cover is rotatably arranged in the installation room, the upper end is connected to the mud storage cylinder, and the lower end is provided with a driving part that drives the mud storage cylinder to rotate to produce a centrifugal effect, and is also provided with a liquid outlet extending from the treatment box; the liquid leakage part is located between the mud storage cylinder and the liquid receiving cover, and controls the solid-liquid separation in the mud storage cylinder by moving the liquid leakage end up and down; the circulation channel is provided in multiple groups along the outer circumference of the mud storage cylinder, and the upper and lower ends of each group of circulation channels are respectively connected with valves. The connecting parts are connected to the sludge storage cylinder, and a sludge pushing part 2 is provided inside the cylinder in the opposite direction of the force applied by the sludge pushing part 1; the treatment agent storage tank is located on the top plate and is used to store and check the sludge treatment agent; the treatment agent control component is located between adjacent circulation channels, and the treatment agent control component uses pressure changes to suck the sludge treatment agent into the pipe 2 through the pipe 1, and then sprays the sludge treatment agent into the circulation channel after temperature adjustment to treat the harmful components in the sludge; the gas collection tank is located on the top plate and is connected to the feed port through the collecting end to collect and check the gas generated during the sludge harmless treatment process; the above-mentioned gas is transported to the connecting parts through the pipe 3 to clear the sludge blockage.

[0007] Preferably, the connection position between the mud storage barrel and the liquid receiving cover forms a stepped structure with a small top and a large bottom; the leakage part includes a sealing seat slidably arranged at the large end of the stepped structure to cover the open lower end of the mud storage barrel; the leakage ring is arranged on the sealing seat, and after being combined with the sealing seat, it can match the stepped structure, and the side wall of the leakage ring is provided with a leakage hole; the liquid enters and exits the liquid receiving cover through the leakage hole to control the sealing performance.

[0008] Preferably, the circulation channel is radially arranged on the outer periphery of the sludge storage cylinder, connected to the partition at the bottom, and a buffer cover is arranged at the top; a nozzle is arranged at the bottom of the buffer cover; the nozzle is located directly above the sludge pushing member 2; the pipes are connected to the top of the buffer cover one by one; the two ends of pipe 2 are respectively connected to the sides of adjacent buffer covers.

[0009] Preferably, the second pipe is arc-shaped and is arranged between adjacent buffer covers around the outer periphery of the mud storage cylinder.

[0010] Preferably, the treatment agent control assembly includes two groups of piston balls slidably arranged in the second pipeline; the pressure regulating pump is connected to the second pipeline, and the regulating port is located between the two groups of piston balls.

[0011] Preferably, the connecting part includes a connecting pipe connecting the circulation channel and the mud storage cylinder; a valve and an air outlet seat are provided on the connecting pipe; the air inlet end of the air outlet seat is connected to the pipeline three through the air pipe, the air outlet end extends into the connecting pipe, and an air outlet head is provided.

[0012] Preferably, a piston plate that moves up and down is provided inside the gas collection tank to separate it into an upper display liquid storage chamber and a lower gas collection chamber. A gas collecting seat connected to the gas collection chamber is provided at the bottom of the gas collection tank, and a display tube connected to the display liquid storage chamber is provided at the top.

[0013] Preferably, the treatment agent storage tank is arranged around the outer periphery of the gas collection tank; and the display tube extends out of the top of the treatment agent storage tank.

[0014] The present invention further proposes a method for harmless treatment of oil production sludge, using the above-mentioned oil production sludge harmless treatment equipment, and the treatment steps are as follows:

[0015] S1. Put the sludge into the sludge storage cylinder from the feed port; connect the treatment agent storage tank to pipeline 1; connect the collection end of the gas collection tank to the feed port, and the gas outlet end to pipeline 3;

[0016] S2. Close the valve of the connecting piece, start the driving piece and the leaking piece, so that the mud storage cylinder and the liquid receiving cover are connected;

[0017] S3, high rotation generates centrifugal force, the oil in the sludge enters the liquid receiving cover and is collected through the liquid outlet;

[0018] S4. Close the driving member and the leakage member, open the connecting member, and move the sludge pushing member 1 and the sludge pushing member 2 in opposite directions, so that the sludge moves in a clockwise / counterclockwise trajectory and is dispersed and broken up;

[0019] S5. The treatment agent control component uses pressure changes to suck the sludge treatment agent into the treatment box. After temperature adjustment, the sludge treatment agent is sprayed into the circulation channel to mix with the moving sludge to treat harmful components in the sludge.

[0020] S6. Gas is continuously generated during the treatment process and enters the gas collection tank from the collection end;

[0021] S7, transferring the collected gas portion to the connector to clear the sludge blockage;

[0022] S8. When the gas volume does not change much, stop adding the sludge treatment agent;

[0023] S9, centrifuging again to separate the solid and liquid to collect and process the waste liquid;

[0024] S10, continue to move the remaining sludge in a clockwise / counterclockwise trajectory, heat it during the movement, decompose the remaining harmful substances, and collect gas;

[0025] S11. After the treatment is completed, the dried sludge is discharged.

[0026] Compared with the prior art, the present invention has the following beneficial technical effects: By combining a centrally located sludge storage cylinder with a first sludge pusher and a peripherally located circulation channel with a second sludge pusher, the sludge maintains a clockwise / counterclockwise trajectory during treatment, preventing sludge accumulation and clogging while facilitating the detoxification process, resulting in more uniform and efficient sludge detoxification. A treatment agent control assembly utilizes pressure fluctuations to control the flow and spraying of the sludge treatment agent, ensuring a uniform top-to-bottom application of the agent at a stable temperature and flow rate, effectively treating harmful components in the sludge. A connector is provided to return some of the collected gas to the connecting pipe. While the gas retains residual heat and does not affect the sludge temperature, it also helps unclog the connecting pipe and prevent circulation interruption. Ultimately, during the sludge movement process, the oil recovery, sludge treatment agent application, sludge pyrolysis, and drying recovery are completed, achieving thorough and efficient detoxification of the sludge, saving energy and protecting the environment, and effectively reducing environmental pollution caused by oil extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the harmless treatment equipment for petroleum mining sludge according to the present invention;

[0028] Figure 2 A cross-sectional view of the harmless treatment equipment for oil production sludge according to the present invention;

[0029] Figure 3 This is a secondary cross-sectional view of the harmless treatment equipment for petroleum mining sludge according to the present invention;

[0030] Figure 4 This is a schematic diagram of the combined structure of the mud storage cylinder, circulation channel, treatment agent storage tank and gas collection tank in the present invention;

[0031] Figure 5 Schematic diagram of the combined structure of the mud storage cylinder and the circulation channel in the present invention;

[0032] Figure 6 It is a structural schematic diagram of the liquid receiving cover and the liquid leakage part in the present invention;

[0033] Figure 7 for Figure 4 A in the middle is an enlarged schematic diagram;

[0034] Figure 8 Schematic diagram of the structure of the connecting member in the present invention;

[0035] Figure 9 This is a schematic structural diagram of the treatment agent storage tank and the gas collection tank in the present invention.

[0036] Figure 1: 1. Treatment box; 2. Partition 2; 3. Mud storage cylinder; 301. Limiting ring; 4. Driving member; 401. Gear ring; 402. Gear; 5. Liquid receiving cover; 6. Leakage member; 601. Leakage ring; 602. Notch; 603. Leakage hole; 604. Sealing seat; 605. Cylinder; 606. Through groove; 607. Driving seat; 608. Driving rod; 7. Sludge pushing member 1; 8. Circulation channel; 801. Buffer cover; 802. Sprinkler; 9. , sludge pushing part 2; 10. Connecting part; 1001. Connecting pipe; 1002. Air outlet seat; 1003. Air pipe; 1004. Air outlet head; 11. Gas collecting tank; 1101. Display tube; 1102. Piston plate; 1103. Gas collecting seat; 12. Treatment agent storage tank; 13. Treatment agent control component; 1301. Pipeline 2; 1302. Piston ball; 1303. Pressure regulating pump; 14. Liquid outlet; 15. Pipeline 1; 16. Pipeline 3. DETAILED DESCRIPTION

[0037] Example 1

[0038] like Figure 1-Figure 5 As shown, the present invention proposes a harmless treatment device for petroleum extraction sludge, which includes a treatment box 1, a sludge storage cylinder 3, a liquid receiving cover 5, a liquid leakage part 6, a circulation channel 8, a treatment agent storage tank 12, a treatment agent control component 13 and a gas collection tank 11. The top plate of the treatment box 1 is rotatably arranged with a feed port, and the interior is divided into a treatment chamber at the upper end and an installation chamber at the lower end by a rotatable partition 2; the treatment chamber can be heated and filled with insulation liquid; the mud storage cylinder 3 is arranged on the partition 2, with the upper and lower ends open, and a sludge pushing member 7 that applies force in the vertical direction is arranged inside; the liquid receiving cover 5 is rotatably arranged in the installation chamber, the upper end is connected to the mud storage cylinder 3, and the lower end is provided with a driving member 4 that drives the mud storage cylinder 3 to rotate to produce a centrifugal effect, and a liquid outlet 14 extending out of the treatment box 1 is also provided; the leakage part 6 is located between the mud storage cylinder 3 and the liquid receiving cover 5, and the solid-liquid separation in the mud storage cylinder 3 is controlled by the up and down movement of the leakage end; a plurality of circulation channels 8 are arranged along the outer periphery of the mud storage cylinder 3, and the upper and lower ends of each group of circulation channels 8 are respectively connected with valves. The connecting piece 10 is connected to the sludge storage cylinder 3, and is provided with a sludge pushing piece 2 9 in the opposite direction of the force applied by the sludge pushing piece 1 7; the treatment agent storage tank 12 is located on the top plate and is used to store and check the sludge treatment agent; the treatment agent control component 13 is located between adjacent circulation channels 8, and the treatment agent control component 13 uses pressure changes to suck the sludge treatment agent into the pipe 2 1301 through the pipe 1 15, and after temperature adjustment, the sludge treatment agent is sprayed into the circulation channel 8 to treat the harmful components in the sludge; the gas collection tank 11 is located on the top plate and is connected to the feed port through the collecting end to collect and check the gas generated during the sludge harmless treatment process; the above-mentioned gas is transported to the connecting piece 10 through the pipe 3 16 to clear the sludge blockage.

[0039] like Figure 3and Figure 6 As shown, the connection position between the mud storage cylinder 3 and the liquid receiving cover 5 forms a stepped structure with a small upper part and a large lower part; the leakage part 6 includes a sealing seat 604 that is slidably set at the large end of the stepped structure to cover the open lower end of the mud storage cylinder 3; the leakage ring 601 is set on the sealing seat 604, and after being combined with the sealing seat 604, it can match the stepped structure. The side wall of the leakage ring 601 is provided with a leakage hole 603 with a slag net, and a notch 602 that matches the lower end connector 10 is also provided; the leakage hole 603 is used to enter and exit the liquid receiving cover 5 to control the sealing performance, and the leakage hole 603 is the leakage end.

[0040] It should be further explained that a cylinder 605 is provided in the liquid receiving cover 5 to drive the sealing seat 604 to move up and down.

[0041] It should be further explained that a limiting ring 301 is provided on the inner wall of the mud storage barrel 3 to limit the leakage ring 601, and a clamping block extending into the stepped structure is provided at the bottom of the mud storage barrel 3. A through groove 606 corresponding to the clamping block is provided on the sealing seat 604.

[0042] When the cylinder 605 drives the sealing seat 604 to move upward until the leakage ring 601 abuts against the limit ring 301, the sealing seat 604 seals the lower end opening of the mud storage cylinder 3, and the clamping block is clamped into the through groove 606, and the mud storage cylinder 3 is sealed; when the cylinder 605 drives the sealing seat 604 to move downward until the leakage hole 603 enters the liquid receiving cover 5, the liquid in the mud storage cylinder 3 can enter the liquid receiving cover 5 through the leakage hole 603 and the through groove 606;

[0043] It should be further explained that a driving seat 607 is provided in the leakage ring 601; a driving rod 608 of the driving seat 607 is driven by a motor 1 to drive the sludge pushing member 1 7 to rotate.

[0044] It should be further explained that the side wall of the driving seat 607 is provided with a conical surface, which can guide the sludge to the periphery and accelerate the centrifugation.

[0045] It should be further explained that the sludge pusher 7 is a spiral dragon structure, which is driven by a motor to drive the sludge in the vertical direction. By maintaining the movement of the sludge, it is harmlessly treated during the movement to avoid sludge accumulation and agglomeration, which affects the treatment effect.

[0046] It should be further explained that the driving element 4 comprises a gear ring 401 located at the bottom of the liquid receiving hood 5; a second motor and a gear 402 driven by the motor are located at the bottom of the mounting chamber; the gear 402 meshes with the gear ring 401, driving its rotation. Ultimately, the liquid receiving hood 5, the mud storage barrel 3, the top plate, and the partition 2 rotate synchronously.

[0047] like Figure 4 and Figure 5As shown, the circulation channel 8 is radially arranged on the outer periphery of the mud storage cylinder 3, with the bottom connected to the partition 2 and a buffer cover 801 set on the top; a nozzle 802 with a one-way valve is set at the bottom of the buffer cover 801.

[0048] It should be further explained that the nozzle 802 is located directly above the sludge pushing member 2 9 .

[0049] It should be further explained that the sludge pushing member 2 9 is a spiral dragon structure, which is driven by the motor 3 to drive the sludge in the vertical direction. By maintaining the movement of the sludge, it is harmlessly treated during the movement to avoid sludge accumulation and agglomeration, which affects the treatment effect.

[0050] It should be further explained that the pipe 15 is connected to the top of the buffer cover 801 in a one-to-one correspondence through the one-way valve 2. The two ends of the pipe 2 1301 are respectively connected to the side of the adjacent buffer cover 801.

[0051] It should be further explained that the second pipe 1301 is arc-shaped and is arranged between adjacent buffer covers 801 around the outer periphery of the mud storage cylinder 3, so that the water discharge from the nozzle 802 is uniform and the heat of the insulation liquid can be absorbed at the same time.

[0052] like Figure 7 As shown, the treatment agent control component 13 includes two groups of piston balls 1302 slidably arranged in the second pipe 1301; the pressure regulating pump 1303 is connected to the second pipe 1301, and the regulating port is located between the two groups of piston balls 1302.

[0053] Pressure-regulating pump 1303 evacuates pipe 2 1301, causing the two sets of piston balls 1302 to move relative to each other. The resulting negative pressure draws the sludge treatment agent from pipe 1 15 into buffer hood 801, where it then enters pipe 2 1301, where it is heated and insulated by the insulation liquid. When spraying liquid is needed, pressure-regulating pump 1303 inflates pipe 2 1301, causing the two sets of piston balls 1302 to move away. The resulting pressure squeezes the sludge treatment agent into buffer hood 801 and sprays it out of nozzle 802. This buffering of the sludge treatment agent in pipe 2 1301 not only allows the temperature of the sludge treatment agent in pipe 2 1301 to be regulated by the temperature of the insulation liquid, but also facilitates increased spray pressure and volume, ensuring a stable and uniform spray rate from multiple nozzles 802, ultimately improving the interaction between the sludge treatment agent and the sludge.

[0054] like Figure 8 As shown, the connecting member 10 includes a connecting pipe 1001 connecting the circulation channel 8 and the mud storage cylinder 3; a valve is provided on the connecting pipe 1001, and an air outlet seat 1002 is also provided; the air inlet end of the air outlet seat 1002 is connected to the pipeline three 16 through the air pipe 1003, and the air outlet end extends into the connecting pipe 1001, and an air outlet head 1004 is provided.

[0055] It should be further explained that the air outlet seat 1002 is annular and is adjusted on the outer circumference of the connecting pipe 1001.

[0056] It should be further explained that multiple groups of air outlet heads 1004 are arranged around the inner wall of the connecting pipe 1001; the air flow of the air outlet heads 1004 is ejected along the inner wall of the connecting pipe 1001, and the air outlet direction matches the sludge movement direction.

[0057] By returning the collected gas portion to the connecting pipe 1001, on the one hand, the gas still has residual heat and will not affect the sludge temperature. On the other hand, the gas can dredge the sludge and prevent it from clogging the connecting pipe 1001 and causing circulation interruption.

[0058] like Figure 9 As shown, a piston plate 1102 that moves up and down is set inside the gas collecting tank 11 to separate it into an upper display liquid storage chamber and a lower gas collecting chamber. A gas collecting seat 1103 connected to the gas collection chamber is set at the bottom of the gas collecting tank 11, and a display tube 1101 connected to the display liquid storage chamber is set at the top.

[0059] It should be further explained that the display liquid storage chamber contains colored display liquid.

[0060] It should be further explained that the gas collecting seat 1103 extends from the feed port into the upper end of the mud storage cylinder 3 and collects gas through a one-way pressure valve, which is the above-mentioned collecting end.

[0061] It should be further explained that the display tube 1101 is made of a transparent material, and a reading number 1 is set on the side wall.

[0062] The gas enters the gas collection chamber from the gas collecting seat 1103, pushing the piston plate 1102 upward, and the colored display liquid moves synchronously and enters the display tube 1101. The gas volume data can be obtained by reading.

[0063] It should be further explained that the treatment agent storage tank 12 is positioned around the perimeter of the gas collection tank 11; a display tube 1101 extends from the top of the treatment agent storage tank 12; the treatment agent storage tank 12 is made of a transparent material, with a readout indicator on the sidewall; and the waste heat of the gas in the gas collection tank 11 can be used to treat the sludge treatment agent. The centralized placement of the treatment agent storage tank 12 and the gas collection tank 11 not only reduces space usage but also facilitates monitoring of the remaining sludge treatment agent and gas collection levels.

[0064] Example 2

[0065] This embodiment proposes a method for harmless treatment of oil production sludge, based on the harmless treatment equipment for oil production sludge in Example 1, and the treatment steps are as follows:

[0066] S1. Put the sludge into the sludge storage cylinder 3 from the feed port; connect the treatment agent storage tank 12 and the pipeline 15; the collection end of the gas collection tank 11 is connected to the feed port, and the gas outlet end is connected to the pipeline 3 16;

[0067] S2. Close the valve of the connecting piece 10, and the sealing seat 604 moves down to the leakage hole 603 and enters the liquid receiving cover 5, so that the mud storage cylinder 3 and the liquid receiving cover 5 are connected;

[0068] S3, gear 402 meshes with gear ring 401, driving it to rotate; liquid receiving cover 5, mud storage cylinder 3, top plate, and partition 2 rotate synchronously to generate centrifugal force, and the oil in the sludge enters the liquid receiving cover 5 through the leakage hole 603 and the through groove 606, and is finally collected through the liquid outlet 14;

[0069] S4. Close the driving member 4 and the leakage member 6, open the connecting member 10, and move the sludge pushing member 1 7 and the sludge pushing member 2 9 in opposite directions, so that the sludge moves in a clockwise / counterclockwise trajectory and is dispersed and broken up;

[0070] S5. The treatment agent control assembly 13 uses the pressure regulating pump 1303 to evacuate the second pipe 1301. The two sets of piston balls 1302 move relative to each other, generating negative pressure that draws the sludge treatment agent from the first pipe 15 into the buffer cover 801. The agent then enters the second pipe 1301, where it is heat-transferred and kept warm by the insulation liquid. When liquid spraying is required, the pressure regulating pump 1303 inflates the second pipe 1301, and the two sets of piston balls 1302 move away. The generated pressure squeezes the sludge treatment agent into the buffer cover 801 and is sprayed out from the nozzle 802, where it mixes with the moving sludge to treat harmful components in the sludge.

[0071] S6. Gas is continuously generated during the treatment process. The gas enters the gas collection chamber from the gas collecting seat 1103, pushing the piston plate 1102 upward. The colored display liquid is displaced synchronously and enters the display tube 1101. The gas volume data can be obtained by reading;

[0072] S7, returning the collected gas portion to the connecting pipe 1001 to clear the sludge blockage;

[0073] S8. When the gas volume does not change much, stop adding the sludge treatment agent;

[0074] S9, centrifuging again to separate the solid and liquid to collect and process the waste liquid;

[0075] S10, continue to move the remaining sludge in a clockwise / counterclockwise trajectory, heat it during the movement, decompose the remaining harmful substances, and collect gas;

[0076] S11. After the treatment is completed, the dried sludge is discharged.

[0077] The sludge treatment agent selected in the above embodiments can be a mixture of one or more agents, including oxidants, sludge conditioners, pH regulators, flocculants, and antimicrobial agents. Oxidants can effectively decompose organic components in sludge, converting them into inorganic substances, thereby reducing the amount of sludge. Furthermore, oxidants, such as hydrogen peroxide and ozone, can kill bacteria, reduce odor, and improve treatment effectiveness. Sludge conditioners primarily modify the physical and chemical properties of sludge, making it easier to handle and dewater. They contain a variety of ingredients, such as inorganic compounds, sludge surface structure modifiers, degreasing agents, wall-breaking agents, sludge surface treatment agents, and sludge stripping agents. pH regulators are used to adjust the pH of the sludge to an appropriate treatment range. Appropriately adjusting the pH of the solution can increase the solubility of nutrients, promote bacterial growth, and accelerate sludge degradation. Examples include sodium hydroxide and sulfuric acid. Flocculants can aggregate suspended matter in sludge into larger particles and cause them to settle, facilitating subsequent treatment and disposal. Examples include polyaluminum chloride (PAC), polyacrylamide (PAM), and its derivatives such as cationic polyacrylamide. Antimicrobial agents, such as hydrogen peroxide and ozone, are primarily used to kill bacteria, viruses, and other microorganisms in sludge, preventing their continued growth, reducing odor, and ensuring hygienic and safe treatment. Other agents include decolorizing and demulsifying powders, defoamers, demulsifiers, gel breakers, lubricants, and inhibitors. These treatment agents, tailored to the specific properties of oilfield mud, can effectively address various issues encountered in mud treatment.

[0078] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A harmless treatment equipment for oil mining sludge, characterized in that: include: The processing box (1) has a rotatable top plate and a feed port, and the interior is divided into an upper processing chamber and a lower installation chamber by a rotatable partition (2); the processing chamber can be heated; A mud storage cylinder (3) is arranged through the partition (2), with upper and lower ends open, and a mud pushing member (7) for applying force in a vertical direction is arranged inside; A liquid receiving cover (5) is rotatably arranged in the installation room, the upper end of which is connected to the mud storage barrel (3), the lower end of which is provided with a driving member (4) for driving the mud storage barrel (3) to rotate to produce a centrifugal effect, and a liquid outlet (14) extending out of the processing box (1); The liquid leakage part (6) is located between the mud storage barrel (3) and the liquid receiving cover (5), and controls the solid-liquid separation in the mud storage barrel (3) by moving the liquid leakage end up and down; A plurality of circulation channels (8) are arranged along the outer periphery of the mud storage barrel (3), and the upper and lower ends of each group of circulation channels (8) are connected to the mud storage barrel (3) via a connecting piece (10) with a valve, and each group of circulation channels (8) is provided with a second mud pusher (9) in the opposite direction to the force applied by the first mud pusher (7); A treatment agent storage tank (12), located on the top plate, for storing and viewing the sludge treatment agent; The treatment agent control component (13) is located between adjacent circulation channels (8). The treatment agent control component (13) uses pressure changes to suck the sludge treatment agent into the pipeline (1301) through the pipeline (15), and then sprays the sludge treatment agent into the circulation channel (8) after temperature adjustment to treat harmful components in the sludge. And a gas collection tank (11), located on the top plate, connected to the feed port through the collection end, to collect and check the gas generated during the sludge harmless treatment process; the above-mentioned gas is transported to the connecting piece (10) through the pipeline three (16) to clear the sludge blockage.

2. The harmless treatment equipment for oil production sludge according to claim 1 is characterized in that: The connection position between the mud storage barrel (3) and the liquid receiving cover (5) forms a stepped structure with a small top and a large bottom; the liquid leakage member (6) comprises a sealing seat (604) slidably arranged at the large end of the stepped structure to cover the open lower end of the mud storage barrel (3); the liquid leakage ring (601) is arranged on the sealing seat (604) and can match the stepped structure after being combined with the sealing seat (604); the side wall of the liquid leakage ring (601) is provided with a liquid leakage hole (603); and the liquid receiving cover (5) is entered and exited through the liquid leakage hole (603) to control the sealing performance.

3. The harmless treatment equipment for oil production sludge according to claim 1 is characterized in that: The circulation channel (8) is radially arranged on the outer periphery of the mud storage cylinder (3), the bottom is connected to the partition plate (2), and the top is provided with a buffer cover (801); a nozzle (802) is provided at the bottom of the buffer cover (801); The nozzle (802) is located directly above the second sludge pushing member (9); Pipe 1 (15) is connected to the top of the buffer cover (801) in a one-to-one correspondence; The two ends of the second pipe (1301) are respectively connected to the side portions of the adjacent buffer covers (801).

4. The harmless treatment equipment for oil production sludge according to claim 3 is characterized in that: The second pipe (1301) is arc-shaped and is arranged around the outer circumference of the mud storage cylinder (3) and between adjacent buffer covers (801).

5. The harmless treatment equipment for oil production sludge according to claim 4 is characterized in that: The treatment agent control component (13) comprises two groups of piston balls (1302) slidably arranged in the second pipeline (1301); the pressure regulating pump (1303) is connected to the second pipeline (1301), and the regulating port is located between the two groups of piston balls (1302).

6. The harmless treatment equipment for oil production sludge according to claim 1 is characterized in that: The connecting piece (10) comprises a connecting pipe (1001) connecting the circulation channel (8) and the mud storage cylinder (3); a valve is arranged on the connecting pipe (1001), and an air outlet seat (1002) is also arranged; the air inlet end of the air outlet seat (1002) is connected to the pipeline three (16) through the air pipe (1003), and the air outlet end extends into the connecting pipe (1001) and is provided with an air outlet head (1004).

7. The harmless treatment equipment for oil production sludge according to claim 1 is characterized in that: A piston plate (1102) that moves up and down is arranged inside the gas collection tank (11) to separate the gas collection tank into an upper display liquid storage chamber and a lower gas collection chamber. A gas collecting seat (1103) connected to the gas collection chamber is arranged at the bottom of the gas collection tank (11), and a display tube (1101) connected to the display liquid storage chamber is arranged at the top.

8. The harmless treatment equipment for oil production sludge according to claim 7 is characterized in that: The treatment agent storage tank (12) is arranged around the outer periphery of the gas collection tank (11); The display tube (1101) extends out of the top of the treatment agent storage tank (12).

9. A method for harmless treatment of oil production sludge, characterized in that: The harmless treatment equipment for oil production sludge according to claim 1 is used, and the treatment steps are as follows: S1, feeding the sludge into the sludge storage cylinder (3) from the feed inlet; connecting the treatment agent storage tank (12) and the pipeline one (15); connecting the collection end of the gas collection tank (11) to the feed inlet, and connecting the gas outlet end to the pipeline three (16); S2, closing the valve of the connecting member (10), starting the driving member (4) and the liquid leakage member (6), so that the mud storage cylinder (3) and the liquid receiving cover (5) are connected; S3, high rotation generates centrifugal force, and the oil in the sludge enters the liquid receiving cover (5) and is collected through the liquid outlet (14); S4, closing the driving member (4) and the liquid leakage member (6), opening the connecting member (10), and causing the sludge pushing member 1 (7) and the sludge pushing member 2 (9) to move in opposite directions, so that the sludge moves in a clockwise / counterclockwise trajectory and is dispersed and broken up; S5, the treatment agent control component (13) uses pressure changes to suck the sludge treatment agent into the treatment box (1), and after temperature adjustment, sprays the sludge treatment agent into the circulation channel (8) to mix with the moving sludge to treat harmful components in the sludge; S6, gas is continuously generated during the treatment process, and the gas enters the gas collection tank (11) from the collection end; S7, transferring the collected gas portion to the connecting piece (10) to clear the sludge blockage; S8. When the gas volume does not change much, stop adding the sludge treatment agent; S9, centrifuging again to separate the solid and liquid to collect and process the waste liquid; S10, continue to move the remaining sludge in a clockwise / counterclockwise trajectory, heat it during the movement, decompose the remaining harmful substances, and collect gas; S11. After the treatment is completed, the dried sludge is discharged.

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