Automatical oil sludge reduction treatment prying device

Abstract

This utility model relates to the field of oily sludge treatment technology, specifically disclosing an automated oily sludge reduction treatment skid-mounted system. The system includes a skid base, with a feeding mechanism, a pretreatment mechanism, and a separation mechanism arranged sequentially from left to right on the upper surface of the skid base. The oily sludge is fed through a feeding trough, a screw conveyor, and an outer conveying cylinder. Through heating, stirring, and the application of chemicals, the oily sludge is transformed into a fluid material. The material is then separated into solid, oil, and water phases of different densities by a high-speed centrifugal centrifuge with a horizontal screw discharge sedimentation centrifuge. These phases are discharged through their respective corresponding solid, oil, and water discharge pipes, thus completing the oily sludge treatment. By integrating multiple processing units onto the skid base, a high degree of automation and modular design is achieved, offering advantages such as high processing efficiency, convenient mobility, rapid deployment, and minimal manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of oily sludge treatment technology, and specifically discloses an automated skid-mounted system for reducing the volume of oily sludge. Background Technology

[0002] During oil extraction, refining, storage, transportation, and machining processes, a large amount of oily sludge (referred to as "oily sludge") with complex composition and difficult treatment is generated. This type of waste has been listed in the National Hazardous Waste Inventory and must be treated in a harmless, reduced-volume, and resource-recovery manner. Currently, common treatment methods include centrifugal separation, thermal washing, incineration, and biological treatment.

[0003] Existing processing facilities often have the following problems:

[0004] 1. They occupy a large area, are mostly fixed factory buildings or large-scale equipment, have a long construction period, and are difficult to move;

[0005] 2. Low level of automation, heavy reliance on manual operation, unstable processing efficiency, and high risk of personnel coming into contact with hazardous waste;

[0006] 3. Poor integration, scattered processing units, long material transfer process, and high energy consumption;

[0007] 4. Poor relocation adaptability: Existing equipment is difficult to deploy and relocate quickly for dispersed and temporary oily sludge generation sites (such as oilfield well sites and emergency accident sites). Utility Model Content

[0008] This utility model proposes an automated skid-mounted system for reducing the volume of oily sludge. The equipment integrates multiple processing units on a unified skid base, achieving a high degree of automated control and modular design. It has the advantages of high processing efficiency, convenient mobility, rapid deployment, and minimal manual intervention.

[0009] This utility model is implemented as follows: an automated sludge reduction treatment skid-mounted system includes a skid-mounted base, and the upper surface of the skid-mounted base is provided with a feeding mechanism, a pretreatment mechanism and a separation mechanism from left to right.

[0010] The feeding mechanism includes a conveying outer cylinder fixedly connected to the upper end face of the skid base. The inner side of the conveying outer cylinder is rotatably connected to a spiral conveying blade. The lower left side of the outer wall of the conveying outer cylinder is connected to a feeding trough fixedly connected to the upper end face of the skid base.

[0011] The pretreatment mechanism includes a stirring and conditioning tank fixedly connected to the upper end face of the skid base and located on the right side of the outer conveying cylinder. A first material passage pipe is connected between the stirring and conditioning tank and the outer conveying cylinder. A stirring frame is rotatably connected to the lower end of the interior of the stirring and conditioning tank.

[0012] The separation mechanism includes a horizontal screw discharge sedimentation centrifuge installed on the upper surface of the skid-mounted base and located on the right side of the stirring and conditioning tank. A second feed pipe is connected between the stirring and conditioning tank and the horizontal screw discharge sedimentation centrifuge. The lower end of the horizontal screw discharge sedimentation centrifuge is connected to a solid phase discharge pipe, an oil phase discharge pipe, and an aqueous phase discharge pipe distributed from left to right. The other ends of the solid phase discharge pipe, the oil phase discharge pipe, and the aqueous phase discharge pipe are respectively connected to external solid phase, oil phase, and aqueous phase collection devices.

[0013] As a preferred embodiment of the automated oily sludge reduction treatment skid-mounted system of this utility model, an electric heating plate and a temperature sensor are respectively embedded in the inner wall of the stirring and conditioning tank.

[0014] As a preferred embodiment of the automated oily sludge reduction treatment skid-mounted system of this utility model, the upper end face of the stirring and conditioning tank is connected to a reagent dosing pipe.

[0015] As a preferred embodiment of the automated oily sludge reduction treatment skid of this utility model, a first drive motor is installed on the upper end face of the outer conveyor cylinder, and the output end of the first drive motor is fixedly connected to the spiral conveyor blade.

[0016] As a preferred embodiment of the automated oily sludge reduction treatment skid-mounted system of this utility model, a second drive motor is installed on the lower end face of the stirring and conditioning tank, and the output end of the second drive motor is fixedly connected to the stirring frame.

[0017] As a preferred embodiment of the automated oily sludge reduction treatment skid of this utility model, a booster pump is installed on the outer wall of the second feed pipe, and an electromagnetic valve is installed inside the second feed pipe.

[0018] As a preferred skid-mounted automated sludge reduction treatment system of this utility model, the horizontal screw discharge sedimentation centrifuge, electric heating plate, temperature sensor, first drive motor, second drive motor, booster pump, and solenoid valve are all electrically connected to an externally installed PLC programmable logic controller.

[0019] The beneficial effects of this utility model are:

[0020] The oily sludge is fed through a feed trough, screw conveyor blades, and outer conveying cylinder. Heating, stirring, and chemical treatment reduce the viscosity and improve separation characteristics of the sludge, transforming it into a fluid material. The high-speed centrifugal action of the horizontal screw discharge sedimentation centrifuge separates the material into solid, oil, and water phases of different densities, which are then discharged through their respective discharge pipes. This completes the processing of the oily sludge. By integrating multiple processing units onto a skid-mounted base, a high degree of automation and modular design is achieved, offering advantages such as high processing efficiency, convenient mobility, rapid deployment, and minimal manual intervention. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a front cross-sectional view of the present invention.

[0024] The markings in the diagram are: 1. Skid-mounted base; 2. Outer conveyor cylinder; 3. Spiral conveyor blades; 4. Feed chute; 5. Mixing and conditioning tank; 6. First feed pipe; 7. Mixing frame; 8. Horizontal spiral discharge sedimentation centrifuge; 9. Second feed pipe; 10. Solid phase discharge pipe; 11. Oil phase discharge pipe; 12. Aqueous phase discharge pipe; 13. Electric heating plate; 14. Reagent dosing pipeline; 15. First drive motor; 16. Second drive motor; 17. Booster pump. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0026] Please see Figure 1-2 An automated sludge reduction treatment skid-mounted system includes a skid base 1, and the upper surface of the skid base 1 is provided with a feeding mechanism, a pretreatment mechanism and a separation mechanism from left to right.

[0027] The feeding mechanism includes a conveying outer cylinder 2 fixedly connected to the upper end face of the skid base 1, a spiral conveying blade 3 rotatably connected inside the conveying outer cylinder 2, and a feeding trough 4 fixedly connected to the upper end face of the skid base 1 on the lower left side of the outer wall of the conveying outer cylinder 2.

[0028] The pretreatment mechanism includes a stirring and conditioning tank 5 fixedly connected to the upper end face of the skid base 1 and located on the right side of the outer conveying cylinder 2. A first material passage pipe 6 is connected between the stirring and conditioning tank 5 and the outer conveying cylinder 2. A stirring frame 7 is rotatably connected to the lower end of the interior of the stirring and conditioning tank 5.

[0029] The separation mechanism includes a horizontal screw discharge sedimentation centrifuge 8 installed on the upper surface of the skid-mounted base 1 and located on the right side of the stirring and conditioning tank 5. A second feed pipe 9 is connected between the stirring and conditioning tank 5 and the horizontal screw discharge sedimentation centrifuge 8. The lower end of the horizontal screw discharge sedimentation centrifuge 8 is connected to a solid phase discharge pipe 10, an oil phase discharge pipe 11 and an aqueous phase discharge pipe 12 distributed from left to right. The other ends of the solid phase discharge pipe 10, the oil phase discharge pipe 11 and the aqueous phase discharge pipe 12 are respectively connected to external solid phase, oil phase and aqueous phase collection devices.

[0030] In this embodiment: During use, the oily sludge is placed into the feed trough 4, and then the screw conveyor 3 rotates. The rotating screw conveyor 3 transports the oily sludge through the outer conveyor cylinder 2 and the first feed pipe 6 to the mixing and conditioning tank 5. Then, the reagent is added to the mixing and conditioning tank 5 through the reagent addition pipe 14. Then, the stirring frame 7 rotates, and the oily sludge and reagent are stirred by the stirring frame 7. At the same time, the inside of the mixing and conditioning tank 5 is heated by the electric heating plate 13. Under the action of heating and stirring the oily sludge and the reagent, the viscosity of the oily sludge can be reduced and the separation characteristics can be improved, so that the oily sludge is changed into a fluid material. Then, the solenoid valve is opened, and the booster pump 17 draws the fluid material through the second feed pipe 9 into the horizontal screw discharge sedimentation centrifuge 8. Inside, under the high-speed centrifugal action of the horizontal screw discharge sedimentation centrifuge 8 (the model of the horizontal screw discharge sedimentation centrifuge 8 is LW500×2000ND, which is a well-known and mature existing technology, and its working principle and components will not be described in detail here), the material is separated into solid phase, oil phase and water phase with different densities. Then, the solid phase, oil phase and water phase are discharged through their respective solid phase discharge pipe 10, oil phase discharge pipe 11 and water phase discharge pipe 12, and enter the corresponding collection device, thereby completing the treatment of sludge. By integrating multiple treatment process units on the skid-mounted base 1, a high degree of automation control and modular design are achieved, which has the advantages of high processing efficiency, convenient movement, rapid deployment and less manual intervention.

[0031] As a technical optimization of this utility model, an electric heating plate 13 and a temperature sensor are respectively embedded in the inner wall of the stirring and conditioning tank 5.

[0032] In this embodiment: the electric heating plate 13 can heat the inside of the mixing and conditioning tank 5, and the temperature sensor can monitor the temperature inside the mixing and conditioning tank 5 in real time.

[0033] As a technical optimization of this utility model, the upper end face of the stirring and conditioning tank 5 is connected to the reagent dosing pipe 14.

[0034] In this embodiment, the agent is conveniently added to the stirring and conditioning tank 5 through the agent addition pipe 14.

[0035] As a technical optimization of this utility model, a first drive motor 15 is installed on the upper end face of the outer conveying cylinder 2, and the output end of the first drive motor 15 is fixedly connected to the spiral conveying blade 3.

[0036] In this embodiment, the first drive motor 15 can drive the spiral conveyor blade 3 to rotate.

[0037] As a technical optimization of this utility model, a second drive motor 16 is installed on the lower end face of the stirring and conditioning tank 5, and the output end of the second drive motor 16 is fixedly connected to the stirring frame 7.

[0038] In this embodiment, the second drive motor 16 can drive the stirring rack 7 to rotate.

[0039] As a technical optimization of this utility model, a booster pump 17 is installed on the outer wall of the second feed pipe 9, and an electromagnetic valve is installed inside the second feed pipe 9.

[0040] In this embodiment: the booster pump 17 can pump fluid material through the second feed pipe 9 into the horizontal screw discharge sedimentation centrifuge 8, and the second feed pipe 9 can be blocked by the electromagnetic valve.

[0041] As a technical optimization of this utility model, the horizontal screw discharge sedimentation centrifuge 8, the electric heating plate 13, the temperature sensor, the first drive motor 15, the second drive motor 16, the booster pump 17, and the solenoid valve are all electrically connected to an externally installed PLC programmable logic controller.

[0042] In this embodiment: the PLC programmable logic controller facilitates the reception of temperature data from the temperature sensor in real time, and at the same time facilitates the control of the horizontal screw discharge sedimentation centrifuge 8, electric heating plate 13, temperature sensor, first drive motor 15, second drive motor 16, booster pump 17 and solenoid valve (the PLC programmable logic controller is a well-known and mature existing technology, and its working principle and components are not described in detail here).

[0043] The working principle and usage process of this utility model are as follows: In use, the sludge is placed into the feed trough 4. Then, the first drive motor 15 drives the spiral conveyor blade 3 to rotate. The rotating spiral conveyor blade 3 transports the sludge through the outer conveyor cylinder 2 and the first feed pipe 6 to the mixing and conditioning tank 5. Then, chemicals are added to the mixing and conditioning tank 5 through the chemical dosing pipe 14. Next, the second drive motor 16 drives the stirring frame 7 to rotate, which stirs the sludge and chemicals. Simultaneously, the electric heating plate 13 heats the inside of the mixing and conditioning tank 5, thus heating and stirring the sludge and chemicals. Under the action of the agent, the viscosity of the oily sludge is reduced and the separation characteristics are improved, changing the oily sludge into a fluid material. Then, the solenoid valve is opened, and the fluid material is pumped through the second feed pipe 9 into the horizontal screw discharge sedimentation centrifuge 8 by the booster pump 17. Under the high-speed centrifugal action of the horizontal screw discharge sedimentation centrifuge 8, the material is separated into solid phase, oil phase and water phase with different densities. Then, the solid phase, oil phase and water phase are discharged through their respective solid phase discharge pipe 10, oil phase discharge pipe 11 and water phase discharge pipe 12, and enter the corresponding collection device, thereby completing the treatment and processing of the oily sludge.

[0044] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An automated skid-mounted system for reducing the volume of oily sludge, comprising a skid-mounted base (1), characterized in that: The upper surface of the skid-mounted base (1) is provided with a feeding mechanism, a pre-treatment mechanism and a separation mechanism from left to right; The feeding mechanism includes a conveying outer cylinder (2) fixedly connected to the upper end face of the skid base (1), and a spiral conveying blade (3) is rotatably connected inside the conveying outer cylinder (2). The lower left side of the outer wall of the conveying outer cylinder (2) is connected to a feeding groove (4) fixedly connected to the upper end face of the skid base (1). The pretreatment mechanism includes a stirring and conditioning tank (5) fixedly connected to the upper end face of the skid base (1) and located on the right side of the outer conveying cylinder (2). A first material passage pipe (6) is connected between the stirring and conditioning tank (5) and the outer conveying cylinder (2). A stirring frame (7) is rotatably connected to the lower end of the interior of the stirring and conditioning tank (5). The separation mechanism includes a horizontal screw discharge sedimentation centrifuge (8) installed on the upper surface of the skid-mounted base (1) and located on the right side of the stirring and conditioning tank (5). A second feed pipe (9) is connected between the stirring and conditioning tank (5) and the horizontal screw discharge sedimentation centrifuge (8). The lower end of the horizontal screw discharge sedimentation centrifuge (8) is connected to a solid phase discharge pipe (10), an oil phase discharge pipe (11), and a water phase discharge pipe (12) distributed from left to right. The other ends of the solid phase discharge pipe (10), the oil phase discharge pipe (11), and the water phase discharge pipe (12) are respectively connected to external solid phase, oil phase, and water phase collection devices.

2. The automated sludge reduction skid-mounted system according to claim 1, characterized in that: The inner wall of the stirring and conditioning tank (5) is respectively embedded with an electric heating plate (13) and a temperature sensor.

3. The automated sludge reduction skid-mounted system according to claim 1, characterized in that: The upper end of the stirring and conditioning tank (5) is connected to a reagent dosing pipe (14).

4. The automated sludge reduction skid-mounted system according to claim 2, characterized in that: The upper end face of the outer conveying cylinder (2) is equipped with a first drive motor (15), and the output end of the first drive motor (15) is fixedly connected to the spiral conveying blade (3).

5. The automated sludge reduction skid-mounted system according to claim 4, characterized in that: The lower end face of the stirring and conditioning tank (5) is equipped with a second drive motor (16), and the output end of the second drive motor (16) is fixedly connected to the stirring frame (7).

6. The automated sludge reduction skid-mounted system according to claim 5, characterized in that: A booster pump (17) is installed on the outer wall of the second feed pipe (9), and an electromagnetic valve is installed inside the second feed pipe (9).

7. The automated oily sludge reduction skid-mounted system according to claim 6, characterized in that: The horizontal screw discharge sedimentation centrifuge (8), electric heating plate (13), temperature sensor, first drive motor (15), second drive motor (16), booster pump (17) and solenoid valve are all electrically connected to an externally installed PLC programmable logic controller.

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