Heavy oil dehydration separation system and operation method thereof

Abstract

The invention relates to the technical field of thick oil dehydration, in particular to a thick oil dehydration separation system and an operation method thereof. Comprising an agent tank, a dehydration tank, a heating assembly and a stirring assembly, the agent tank communicates with the dehydration tank, an airflow channel is formed in the wall body of the dehydration tank, and the heating assembly is used for conveying hot air into the airflow channel; the top of the dewatering tank is provided with a feed port, and the bottom of the dewatering tank is communicated with a discharge pipe; the stirring assembly is arranged on the upper wall of the dehydration tank in a penetrating manner and is used for stirring liquid in the dehydration tank; the agent tank is used for conveying a demulsifying agent into the dehydration tank; by arranging the heating assembly, the heating assembly generates hot air and transmits the hot air into the airflow channel to heat thickened oil in the dehydration tank, the fluidity of the thickened oil is improved, the separation speed is increased, the dehydration efficiency is improved, hot air is used for heating, impurities in airflow are few, and frequent cleaning and maintenance of the airflow channel are not needed; the device is suitable for long-time continuous thick oil dehydration operation.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy oil dehydration, and in particular to a heavy oil dehydration separation system and an operating method thereof. Background Art

[0002] Heavy oil is unprocessed petroleum, also known as crude oil. It is a dark brown viscous oily liquid with green fluorescence and a special smell. It is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatic hydrocarbons and olefins. However, heavy oil contains a large amount of water molecules. When heavy oil is commercialized, it needs to be dehydrated and separated.

[0003] One of the commonly used methods for dehydrating heavy oil is to add a demulsifier to the heavy oil and stir it to accelerate the separation of water molecules from the heavy oil. However, the stirring efficiency is often limited by the high viscosity and low fluidity of heavy oil at room temperature, which limits the dehydration efficiency of heavy oil.

[0004] To address this issue, prior art CN204981769U discloses a simple crude oil dehydration device for the pilot production phase. The device comprises several storage tanks, a demulsifier dosing device, a heating boiler, and a sewage tank. The storage tanks are connected in parallel and functionally divided into a circulation tank, a settling tank, a good oil tank, and a sewage tank. The circulation tank, settling tank, and good oil tank are interconnected by pipelines. The circulation tank, settling tank, and good oil tank are each connected to the sewage tank via pipelines. The demulsifier dosing device is connected to the circulation tank via pipelines. Coils are provided within the storage tanks, and the heating boiler is connected to the coils via pipelines. The heating boiler heats the storage tanks via the coils, and the sewage tank is connected to the sewage tank. An agitator is provided on the circulation tank.

[0005] However, the aforementioned device uses hydrothermal radiation for heating. If the water contains impurities, they can easily accumulate at the bends in the coils, affecting heating efficiency. Regular coil cleaning and maintenance are necessary to ensure smooth water flow. Coil cleaning and maintenance are often tedious and time-consuming, and heavy oil dehydration operations cannot be performed during these cleaning and maintenance periods. Therefore, the aforementioned device is only suitable for applications where long-term, continuous heavy oil dehydration is not required.

[0006] Therefore, there is an urgent need to provide a heavy oil dehydration and separation system and an operating method thereof, which can more conveniently cope with long-term continuous heavy oil dehydration operations compared with the existing technology. Summary of the Invention

[0007] The present invention solves the technical problems existing in the prior art and provides a heavy oil dehydration and separation system and an operating method thereof.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] A heavy oil dehydration and separation system and an operating method thereof include a reagent tank, a dehydration tank, a heating assembly, and a stirring assembly. The reagent tank is connected to the dehydration tank. An air flow channel is provided within the wall of the dehydration tank. The heating assembly is used to deliver hot air into the air flow channel. A feed port is provided at the top of the dehydration tank, and a discharge pipe is connected to the bottom of the dehydration tank.

[0010] The stirring assembly is provided on the upper wall of the dehydration tank, and is used to stir the liquid inside the dehydration tank;

[0011] The medicine tank is used to transport demulsifier to the interior of the dehydration tank.

[0012] Furthermore, the heating assembly includes a positioning shell, a heater and a fan assembly. The positioning shell is connected to the air flow channel, the heater is arranged at one end of the positioning shell away from the air flow channel, and the fan assembly is arranged at one end of the heater away from the positioning shell.

[0013] Furthermore, the fan assembly includes a second motor and a first fan, and the output end of the second motor is connected to the first fan.

[0014] Furthermore, the fan assembly further includes a second fan, which is located below the first fan and rotates synchronously with the first fan through a transmission assembly.

[0015] Furthermore, the transmission assembly includes a first transmission wheel, a second transmission wheel and a transmission belt, the first transmission wheel is fixedly connected between the output end of the second motor and the first fan, the second transmission wheel is fixedly connected to the second fan, and the first transmission wheel and the second transmission wheel are connected through the transmission belt.

[0016] Furthermore, the heating assembly also includes a dustproof shell, which is connected to the positioning shell, the heater, the first fan, the second fan, the first transmission wheel, the second transmission wheel and the transmission belt are all located inside the dustproof shell, and the second motor is located outside the dustproof shell.

[0017] Furthermore, a plurality of air inlet grilles or a plurality of air inlet meshes are provided on a side wall of the dustproof shell facing away from the first fan.

[0018] Furthermore, the medicine tank, the dehydration tank and the dustproof shell are all arranged on the upper part of the base plate, and the upper wall of the base plate is fixedly connected with a support frame, a fixing frame and a mounting frame in sequence. The medicine tank is connected above the support frame, the dehydration tank is connected above the fixing frame, and the dustproof shell is connected above the mounting frame.

[0019] Furthermore, there are a plurality of heaters, and the plurality of heaters are arranged at intervals along the arrangement direction of the first fan and the second fan, and a ventilation gap is provided between two adjacent heaters.

[0020] Furthermore, the dehydration tank includes a mixing box and an insulation shell, the insulation shell is arranged on the outside of the mixing box, the air flow channel is arranged inside the insulation shell wall, the feed port is arranged at the top of the mixing box, and the discharge pipe is connected to the bottom of the mixing box.

[0021] Furthermore, the stirring assembly includes a second drive assembly, a transmission shaft and a plurality of stirring blades. The second drive assembly is located at the top of the stirring box, the transmission shaft is arranged through the upper wall of the stirring box, and the plurality of stirring blades are located inside the stirring box. The transmission shaft is coaxially arranged with the stirring box, and the end of the transmission shaft located outside the stirring box is connected to the second drive assembly. The second drive assembly drives the transmission shaft to rotate, and the stirring blades are fixedly connected to the outer wall of the transmission shaft located inside the stirring box.

[0022] Furthermore, the second driving assembly includes a first motor, and an output end of the first motor is connected to the transmission shaft.

[0023] Furthermore, the second drive assembly further includes a first bevel gear and a second bevel gear, the first bevel gear is connected to the output end of the first motor, the second bevel gear is connected to the upper end of the transmission shaft, and the first bevel gear is meshed with the second bevel gear.

[0024] Furthermore, the stirring blade includes an upper stirring rod, a lower stirring rod and multiple vertical stirring rods, the upper stirring rod and the lower stirring rod are connected through multiple vertical stirring rods, and one end of the upper stirring rod and the lower stirring rod in the same direction is fixedly connected to the transmission shaft.

[0025] Furthermore, a quantitative shell is provided between the medicine tank and the dehydration tank, the upper end of the quantitative shell is connected to the medicine tank through a first pipe, and the lower end of the quantitative shell is connected to the dehydration tank through a second pipe, and the connection point between the first pipe and the quantitative shell and the connection point between the second pipe and the quantitative shell are respectively located at the two ends of the quantitative shell.

[0026] Furthermore, the quantitative housing is further connected to a quantitative assembly, which includes a solenoid valve, a capacity housing, and a first drive assembly. The solenoid valve is arranged between the medicine tank and the first pipe, the capacity housing is located inside the quantitative housing, and the first drive assembly is located outside the quantitative housing. The first drive assembly drives the capacity housing to perform reciprocating motion inside the quantitative housing.

[0027] The capacity shell has two position states in the quantitative shell, namely a first position state and a second position state. When the capacity shell is in the first position state, the capacity shell is only connected to the first pipe. When the capacity shell is in the second position state, the capacity shell is only connected to the second pipe.

[0028] Furthermore, the first drive assembly includes an electric push rod, a connecting plate and a plurality of positioning rods, the electric push rod is fixedly connected to the outer side wall of the quantitative shell, the output end of the electric push rod is extended in the direction away from the quantitative shell, the output end of the electric push rod is fixedly connected to the connecting plate, and the plurality of positioning rods are fixedly connected to the connecting plate, and the end of the positioning rod away from the connecting plate passes through the side wall of the quantitative shell and is fixedly connected to the capacity shell, and the axis of the positioning rod is arranged parallel to the axis of the electric push rod.

[0029] Furthermore, a valve is connected in series to the discharge pipe.

[0030] A method for operating a heavy oil dehydration and separation system comprises the following steps:

[0031] S1. Add thick oil into the mixing tank;

[0032] S2. Open the solenoid valve to discharge the demulsifier in the reagent tank into the capacity shell. After the capacity shell is filled, close the solenoid valve, start the first drive assembly, push the capacity shell to the second position, and discharge the demulsifier in the capacity shell into the mixing tank.

[0033] S3, starting the second driving assembly to drive the stirring blade to stir the liquid inside the stirring box;

[0034] S4. Start the heater and the fan assembly at the same time. The fan assembly draws external air to the heater and discharges the heat generated by the heater to the air flow channel to heat the mixing box.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) The present invention provides a heating component, which generates hot air and transmits the hot air to the air flow channel to heat the heavy oil inside the dehydration tank, thereby increasing the temperature of the heavy oil and improving the fluidity of the heavy oil. The heating can promote the evaporation and volatilization of water molecules, accelerate the separation speed, and improve the dehydration efficiency. The use of hot air heating reduces impurities in the air flow and does not require frequent cleaning and maintenance of the air flow channel. The invention is suitable for long-term continuous heavy oil dehydration operations.

[0037] (2) The present invention also provides a quantitative shell, a capacity shell and a first drive component. The demulsifier in the medicine tank flows into the capacity shell of the quantitative shell through the first pipe. After the capacity shell is filled, the solenoid valve is closed and the filling of the demulsifier into the capacity shell is stopped. Then, the demulsifier in the capacity shell is pushed to the connection point between the quantitative shell and the second pipe through the first drive component, thereby achieving the effect of quantitative dosing of the medicine into the mixing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the overall structure of the heavy oil dehydration and separation system in the embodiment.

[0039] Figure 2 Schematic diagram of the three-dimensional structure of the heavy oil dehydration and separation system in the embodiment.

[0040] Figure 3 It is a structural schematic diagram of the quantitative mechanism in the embodiment.

[0041] Figure 4 It is a schematic diagram of the dehydration tank and its internal device in the embodiment.

[0042] Figure 5 Schematic diagram of the structure of the hot air device in the embodiment.

[0043] Description of reference numerals:

[0044] 1. Bottom plate; 2. Support frame; 3. Support plate; 4. Medicine tank; 5. Solenoid valve; 6. First pipeline; 7. Dosing shell;

[0045] 8. Dosing assembly; 801. Electric push rod; 802. Connecting plate; 803. Positioning rod; 804. Capacity housing; 805. Fixing ring;

[0046] 9. Fixed frame; 10. Mixing box; 11. Extension plate;

[0047] 12. Stirring assembly; 1201. First motor; 1202. First bevel gear; 1203. Second bevel gear; 1204. Stirring blade; 12041. Upper stirring rod; 12042. Lower stirring rod; 12043. Vertical stirring rod; 1205. Drive shaft;

[0048] 13. Second pipeline; 14. Discharge pipe; 15. Valve; 16. Mounting frame;

[0049] 17. Heating assembly; 1701. Positioning housing; 1702. Heater; 1703. Dustproof housing; 1704. Second motor; 1705. First transmission wheel; 1706. First fan; 1707. Transmission belt; 1708. Second transmission wheel; 1709. Second fan; 1710. Reinforcement ring;

[0050] 18. Insulation shell; 19. Reinforcement block; 20. Feed port. DETAILED DESCRIPTION

[0051] The technical solution of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0052] Example

[0053] like Figure 1 、 Figure 2 As shown, the present invention provides a heavy oil dehydration and separation system, including a reagent tank 4, a dehydration tank and a heating component 17. The dehydration tank includes a stirring box 10 and an insulation shell 18. The reagent tank 4 is connected to the stirring box 10. The stirring box 10 is used to store a demulsifier. The insulation shell 18 is sleeved on the outside of the stirring box 10, and the insulation shell 18 is connected to the heating component 17; the reagent tank 4, the stirring box 10, and the heating component 17 are all arranged on the upper part of the bottom plate 1, and the upper part of the bottom plate 1 is fixedly connected to the support frame 2, the fixing frame 9 and the mounting frame 16 from left to right. The support frame 2 is fixedly connected to the support plate 3 above, the support plate 3 is fixedly connected to the reagent tank 4 above, the fixing frame 9 is fixedly connected to the stirring box 10 above, and the mounting frame 16 is fixedly connected to the heating component 17 above; an air flow channel is provided in the wall of the insulation shell 18, and the heating component 17 is used to transport hot air to the air flow channel in the insulation shell 18.

[0054] A first pipe 6 is provided on the side wall of the medicine tank 4 close to the mixing box 10. The first pipe 6 is connected to the quantitative shell 7 at one end away from the medicine tank 4. The upper end of the quantitative shell 7 is connected to the first pipe 6. The lower end of the quantitative shell 7 is connected to the second pipe 13. The second pipe 13 is connected to the mixing box 10 at one end away from the quantitative shell 7.

[0055] like Figure 1 、 Figure 3As shown, the quantitative shell 7 is fixed on the upper wall of the support plate 3, and the connection points between the first pipe 6 and the quantitative shell 7 and the connection points between the second pipe 13 and the quantitative shell 7 are respectively located on the left and right sides of the quantitative shell 7. The quantitative shell 7 is also connected to a quantitative component 8, which includes a solenoid valve 5, a capacity shell 804 and a first drive component. The solenoid valve 5 is arranged between the first pipe 6 and the medicine tank 4, the capacity shell 804 is arranged inside the quantitative shell 7, and the first drive component is arranged outside the quantitative shell 7. The first drive component drives the capacity shell 804 to reciprocate inside the quantitative shell 7. The capacity shell 804 is a hollow structure with openings on both the top and the bottom. The capacity shell 804 has two position states inside the quantitative shell 7, namely a first position state and a second position state. When the capacity shell 804 is in the first position state, the upper end of the capacity shell 804 is connected to the first pipe 6, and the lower end is not connected to the second pipe 13. When the capacity shell 804 is in the second position state, the upper end of the capacity shell 804 is not connected to the first pipe 6, and the lower end is connected to the second pipe 13.

[0056] The first drive assembly includes an electric push rod 801, a connecting plate 802, a positioning rod 803 and a fixing ring 805. The side wall of the quantitative shell 7 away from the medicine tank 4 is fixedly connected to the fixing ring 805, and the electric push rod 801 is fixedly connected inside the fixing ring 805. The axis of the electric push rod 801 is perpendicular to the side wall of the medicine tank 4 where the fixing ring 805 is set. A connecting plate 802 is fixedly set at the output end of the electric push rod 801. The connecting plate 802 is vertically fixedly connected to multiple positioning rods 803 at one end close to the electric push rod 801. The end of the positioning rod 803 away from the connecting plate 802 passes through the quantitative shell 7 and is fixedly connected to the outer wall of the capacity shell 804. Multiple positioning rods 803 are arranged around the electric push rod 801; when the electric push rod 801 is extended, the capacity shell 804 is in the first position and connected to the first pipe 6. When the electric push rod 801 is retracted, the capacity shell 804 is in the second position and connected to the second pipe 13.

[0057] A quantitative component 8 is provided for controlling the amount of medicine added to the mixing box 10. Specifically, when adding medicine, the demulsifier is discharged into the inner cavity of the capacity shell 804 through the first pipe 6. After the inner cavity of the capacity shell 804 is filled with the demulsifier, the solenoid valve 5 is closed, and the first pipe 6 stops adding the demulsifier to the quantitative shell 7. At this time, the electric push rod 801 retracts to drive the connecting plate 802 to move. When the connecting plate 802 moves, it drives the positioning rod 803 to move, thereby pushing the capacity shell 804 to the second position state, and then the quantitative demulsifier is discharged into the inner cavity of the mixing box 10 through the second pipe 13, thereby achieving the effect of quantitative dosing.

[0058] like Figure 1 、 Figure 4As shown, the second pipe 13 passes through the insulation shell 18 and is connected to the bottom of the side wall of the mixing box 10. A discharge pipe 14 is provided at the bottom of the mixing box 10, and the discharge pipe 14 is connected to the inside of the mixing box 10. A valve 15 is connected in series on the discharge pipe 14; a stirring assembly 12 is also provided on the mixing box 10, and the stirring assembly 12 includes a second drive assembly, a transmission shaft 1205 and a plurality of stirring blades 1204. The second drive assembly is arranged on the upper wall of the mixing box 10, and the transmission shaft 1205 is passed through the upper wall of the mixing box 10, and the transmission shaft 1205 is coaxially arranged with the mixing box 10. The transmission shaft 1205 located inside the mixing box 10 is fixed with a plurality of stirring blades 1204 along its circumference; a feed port 20 is also provided on the top of the mixing box 10.

[0059] The second drive assembly includes a first motor 1201, a first bevel gear 1202 and a second bevel gear 1203. The first motor 1201 is arranged on the upper wall of the mixing box 10. The end of the output shaft of the first motor 1201 is fixedly connected to the first bevel gear 1202. The axis of the first bevel gear 1202 is arranged parallel to the upper wall of the mixing box 10. The end of the transmission shaft 1205 located outside the mixing box 10 is fixedly connected to the second bevel gear 1203. The second bevel gear 1203 is meshed with the first bevel gear 1202.

[0060] An extension plate 11 is fixedly provided on the upper wall of the mixing box 10, and the extension plate 11 is set to be L-shaped. The extension plate 11 includes a horizontal part and a vertical part that are integrally connected. The vertical part of the extension plate 11 is fixedly connected to the mixing box 10, and the upper wall of the horizontal part of the extension plate 11 is fixedly connected to the first motor 1201. The upper wall of the mixing box 10 is also provided with a reinforcement block 19. The reinforcement block 19 is a triangular prism shape, and the vertical surfaces of the reinforcement block 19 are respectively fixedly connected to the upper wall of the mixing box 10 and the side wall of the vertical part of the extension plate 11 close to the horizontal part. The reinforcement block 19 is provided to reinforce the extension plate 11.

[0061] The stirring blade 1204 includes an upper stirring rod 12041, a lower stirring rod 12042 and multiple vertical stirring rods 12043. The upper stirring rod 12041 and the lower stirring rod 12042 are arranged in parallel. The upper stirring rod 12041 and the lower stirring rod 12042 are fixedly connected by multiple vertical stirring rods 12043. The multiple vertical stirring rods 12043 are arranged at intervals. The ends of the upper stirring rod 12041 and the lower stirring rod 12042 in the same direction are fixedly connected to the transmission shaft 1205. The axes of the upper stirring rod 12041 and the lower stirring rod 12042 are both arranged perpendicular to the axis of the transmission shaft 1205.

[0062] When stirring the mixing box 10 , the first motor 1201 is started, the first motor 1201 drives the first bevel gear 1202 to rotate, the first bevel gear 1202 drives the second bevel gear 1203 to rotate, thereby driving the transmission shaft 1205 to rotate, and driving the stirring blade 1204 to stir the material in the mixing box 10 .

[0063] like Figure 5 As shown, the heating component 17 includes a positioning shell 1701, a heater 1702, a dustproof shell 1703 and a fan assembly. The positioning shell 1701 is fixedly connected to the outer side wall of the insulation shell 18, and the end of the positioning shell 1701 away from the insulation shell 18 is connected to the dustproof shell 1703. The positioning shell 1701 is connected to the air flow channel in the insulation shell 18, and the dustproof shell 1703 is connected to the positioning shell 1701. The heater 1702 and part of the fan assembly are arranged inside the dustproof shell 1703, and the remaining part of the fan assembly is arranged outside the dustproof shell 1703. Compared with the fan assembly arranged inside the dustproof shell 1703, the heater 1702 is arranged closer to the positioning shell 1701, and the fan assembly is used to transfer the heat generated by the heater 1702 to the inside of the air flow channel, and then heat the inside of the mixing box 10.

[0064] The fan assembly includes a second motor 1704, a first fan 1706, a second fan 1709, a transmission assembly and a reinforcement ring 1710, wherein the transmission assembly includes a first transmission wheel 1705, a transmission belt 1707 and a second transmission wheel 1708. The second motor 1704 and the reinforcement ring 1710 are arranged outside the dustproof shell 1703, and the side wall of the dustproof shell 1703 away from the positioning shell 1701 is fixedly connected to the reinforcement ring 1710. The second motor 1704 is fixedly connected to the outside of the dustproof shell 1703 through the reinforcement ring 1710. The output end of the second motor 1704 passes through the side wall of the dustproof shell 1703 and is fixedly connected to the first transmission wheel 1705. The end of the first transmission wheel 1705 away from the second motor 1704 is fixedly connected to the first fan 1705. 06. The second fan 1709 is located below the first fan 1706. The second fan 1709 is connected to the inner side wall of the dustproof shell 1703 through the second transmission wheel 1708. The second transmission wheel 1708 is connected to the inner rotation of the dustproof shell 1703. The first transmission wheel 1705 and the second transmission wheel 1708 are driven by the transmission belt 1707. The second motor 1704 is started, and the first transmission wheel 1705 rotates to drive the first fan 1706 to work. The second transmission wheel 1708 is driven by the first transmission wheel 1705 through the transmission belt 1707, and the second transmission wheel 1708 thereby drives the second fan 1709 to work. The side wall of the dustproof shell 1703 on which the second motor 1704 is arranged is provided with a plurality of air inlet grilles or a plurality of air inlet meshes.

[0065] There are multiple heaters 1702 , and the multiple heaters 1702 are distributed along the arrangement direction of the first fan 1706 and the second fan 1709 , and ventilation gaps are provided between the multiple heaters 1702 .

[0066] The working principle of a heavy oil dehydration and separation system and an operating method thereof provided by the present invention is as follows: when in use, the heavy oil is poured into the inner cavity of the mixing box 10 through the feed port 20, and then the solenoid valve 5 is opened to discharge the demulsifier in the reagent tank 4 into the interior of the quantitative shell 7 through the first pipe 6, and the quantitative addition of the medicine to the mixing box 10 is achieved through the capacity shell 804 and the first drive component. The quantitative demulsifier enters the inner cavity of the mixing box 10 through the second pipe 13. At this time, the first motor 1201 is turned on, and the first bevel gear 1202 is driven to rotate by the first motor 1201, and the first bevel gear 1202 drives the second bevel gear 1203 to rotate, thereby driving the stirring blade 1204 to stir the inside of the mixing box 10, so as to achieve sufficient mixing of the heavy oil and demulsifier in the inner cavity of the mixing box 10. At the same time, the heater 1702 is started and the second motor 1704 is turned on, and the second motor 1704 drives the first transmission wheel 1705 to rotate The first transmission wheel 1705 drives the first fan 1706 to rotate. While the first transmission wheel 1705 drives the first fan 1706 to transmit, the first transmission wheel 1705 drives the second transmission wheel 1708 to rotate through the transmission belt 1707, thereby realizing the rotation of the second fan 1709. The first fan 1706 and the second fan 1709 draw air through the air inlet grid or air inlet mesh provided on the side wall of the dustproof shell 1703 to the heater 1702. The heat generated by the heater 1702 is discharged into the air flow channel through the positioning shell 1701, and then heats the mixing box 10, thereby increasing the temperature of the heavy oil, improving the fluidity of the heavy oil, and making it easier to separate water and heavy oil. By heating the heavy oil, the viscosity can be reduced, the evaporation and volatilization of water molecules can be promoted, and the separation speed can be accelerated. Finally, the valve 15 is opened to discharge the water through the discharge pipe 14 first, and then the separated oil is discharged.

[0067] The present invention also provides an operating method of a heavy oil dehydration and separation system, comprising the following steps:

[0068] S1, adding thick oil into the mixing tank 10;

[0069] S2. Open the solenoid valve 5 to discharge the demulsifier in the reagent tank 4 into the interior of the capacity shell 804 through the first pipe 6. After the capacity shell 804 is filled, close the solenoid valve 5, start the first drive assembly, push the capacity shell 804 to the point where it is connected to the second pipe 13, and discharge the demulsifier in the capacity shell 804 into the mixing box 10;

[0070] S3, start the second driving assembly to drive the stirring blade 1204 to stir the heavy oil and demulsifier in the stirring box 10;

[0071] S4. Start the heater 1702 and the fan assembly at the same time. The fan assembly draws external air to the heater 1702 and discharges the heat generated by the heater 1702 into the air flow channel to heat the mixing box 10.

[0072] The present invention is provided with a heater 1702 and a fan assembly. The fan assembly draws external air to the heater 1702, and discharges the heat generated by the heater 1702 into the air flow channel. The generated hot air heats the mixing box 10, thereby increasing the temperature of the heavy oil and improving the fluidity of the heavy oil. The heating can promote the evaporation and volatilization of water molecules, accelerate the separation speed, and improve the dehydration efficiency. The system uses hot air heating, has few impurities in the air flow, and does not require frequent cleaning and maintenance of the air flow channel. It is suitable for long-term continuous heavy oil dehydration operations.

[0073] The present invention also provides a quantitative shell 7, a capacity shell 804 and a first drive component. The demulsifier in the medicine tank 4 flows into the capacity shell 804 of the quantitative shell 7 through the first pipe 6. After the capacity shell 804 is filled, the solenoid valve 5 is closed, and the filling of the demulsifier into the capacity shell 804 is stopped. The demulsifier in the capacity shell 804 is then pushed to the connection point between the quantitative shell 7 and the second pipe 13 through the first drive component, thereby achieving the effect of quantitative dosing into the mixing box 10.

[0074] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A heavy oil dehydration and separation system, characterized in that: It includes a medicine tank, a dehydration tank, a heating component and a stirring component. The medicine tank is connected to the dehydration tank. An air flow channel is provided in the wall of the dehydration tank. The heating component is used to transport hot air into the air flow channel. A feed port is provided on the top of the dehydration tank, and a discharge pipe is connected to the bottom of the dehydration tank. The stirring assembly is provided on the upper wall of the dehydration tank, and is used to stir the liquid inside the dehydration tank; The medicine tank is used to transport demulsifier to the interior of the dehydration tank.

2. A heavy oil dehydration and separation system according to claim 1, characterized in that: The heating assembly includes a positioning shell, a heater and a fan assembly. The positioning shell is connected to the air flow channel. The heater is arranged at one end of the positioning shell away from the air flow channel. The fan assembly is arranged at one end of the heater away from the positioning shell.

3. A heavy oil dehydration and separation system according to claim 2, characterized in that: The fan assembly includes a second motor and a first fan, and an output end of the second motor is connected to the first fan.

4. A heavy oil dehydration and separation system according to claim 3, characterized in that: The fan assembly further includes a second fan, which is located below the first fan and rotates synchronously with the first fan through a transmission assembly.

5. A heavy oil dehydration and separation system according to claim 4, characterized in that: The transmission assembly includes a first transmission wheel, a second transmission wheel and a transmission belt. The first transmission wheel is fixedly connected between the output end of the second motor and the first fan, the second transmission wheel is fixedly connected to the second fan, and the first transmission wheel and the second transmission wheel are connected through the transmission belt.

6. The heavy oil dehydration and separation system according to claim 5, characterized in that: The heating assembly also includes a dustproof shell, which is connected to the positioning shell. The heater, the first fan, the second fan, the first transmission wheel, the second transmission wheel and the transmission belt are all located inside the dustproof shell, and the second motor is located outside the dustproof shell.

7. The heavy oil dehydration and separation system according to claim 6, characterized in that: A plurality of air inlet grilles or a plurality of air inlet meshes are provided on the side wall of the dustproof shell facing away from the first fan.

8. The heavy oil dehydration and separation system according to claim 6, characterized in that: The medicine tank, the dehydration tank and the dustproof shell are all arranged on the upper part of the base plate. The upper wall of the base plate is fixedly connected with a support frame, a fixing frame and a mounting frame in sequence. The medicine tank is connected above the support frame, the dehydration tank is connected above the fixing frame, and the dustproof shell is connected above the mounting frame.

9. The heavy oil dehydration and separation system according to claim 4, characterized in that: There are multiple heaters, and the multiple heaters are arranged at intervals along the arrangement direction of the first fan and the second fan, and a ventilation gap is provided between two adjacent heaters.

10. The heavy oil dehydration and separation system according to claim 1, characterized in that: The dehydration tank includes a mixing box and an insulation shell. The insulation shell is arranged outside the mixing box, the air flow channel is arranged inside the insulation shell wall, the feed port is arranged at the top of the mixing box, and the discharge pipe is connected to the bottom of the mixing box.

11. The heavy oil dehydration and separation system according to claim 10, characterized in that: The stirring assembly includes a second drive assembly, a transmission shaft and a plurality of stirring blades. The second drive assembly is located at the top of the stirring box, the transmission shaft passes through the upper wall of the stirring box, and the plurality of stirring blades are located inside the stirring box. The transmission shaft is coaxially arranged with the stirring box, and the end of the transmission shaft located outside the stirring box is connected to the second drive assembly. The second drive assembly drives the transmission shaft to rotate, and the stirring blades are fixedly connected to the outer wall of the transmission shaft located inside the stirring box.

12. A heavy oil dehydration and separation system according to claim 11, characterized in that: The second driving assembly includes a first motor, and an output end of the first motor is connected to the transmission shaft.

13. A heavy oil dehydration and separation system according to claim 12, characterized in that: The second drive assembly further includes a first bevel gear and a second bevel gear, the first bevel gear is connected to the output end of the first motor, the second bevel gear is connected to the upper end of the transmission shaft, and the first bevel gear is meshed with the second bevel gear.

14. The heavy oil dehydration and separation system according to claim 11, characterized in that: The stirring blade includes an upper stirring rod, a lower stirring rod and a plurality of vertical stirring rods. The upper stirring rod and the lower stirring rod are connected through the plurality of vertical stirring rods. One end of the upper stirring rod and the lower stirring rod in the same direction is fixedly connected to the transmission shaft.

15. The heavy oil dehydration and separation system according to claim 1, characterized in that: A quantitative shell is provided between the medicine tank and the dehydration tank. The upper end of the quantitative shell is connected to the medicine tank through a first pipe, and the lower end of the quantitative shell is connected to the dehydration tank through a second pipe. The connection points between the first pipe and the quantitative shell and the connection points between the second pipe and the quantitative shell are respectively located at two ends of the quantitative shell.

16. The heavy oil dehydration and separation system according to claim 15, characterized in that: The quantitative housing is further connected to a quantitative assembly, which includes a solenoid valve, a capacity housing, and a first drive assembly. The solenoid valve is disposed between the medicine tank and the first pipe. The capacity housing is located inside the quantitative housing. The first drive assembly is located outside the quantitative housing. The first drive assembly drives the capacity housing to reciprocate inside the quantitative housing. The capacity shell has two position states in the quantitative shell, namely a first position state and a second position state. When the capacity shell is in the first position state, the capacity shell is only connected to the first pipe. When the capacity shell is in the second position state, the capacity shell is only connected to the second pipe.

17. A heavy oil dehydration and separation system according to claim 16, characterized in that: The first driving assembly includes an electric push rod, a connecting plate and multiple positioning rods. The electric push rod is fixedly connected to the outer side wall of the quantitative shell, and the output end of the electric push rod is extended in the direction away from the quantitative shell. The output end of the electric push rod is fixedly connected to the connecting plate, and multiple positioning rods are fixedly connected to the connecting plate. The end of the positioning rod away from the connecting plate passes through the side wall of the quantitative shell and is fixedly connected to the capacity shell. The axis of the positioning rod is arranged parallel to the axis of the electric push rod.

18. The heavy oil dehydration and separation system according to claim 1, characterized in that: The discharge pipe is connected in series with a valve.

19. The method for operating a heavy oil dehydration and separation system according to any one of claims 1 to 18, characterized in that: The following steps are involved: S1. Add thick oil into the mixing tank; S2. Open the solenoid valve to discharge the demulsifier in the reagent tank into the capacity shell. After the capacity shell is filled, close the solenoid valve, start the first drive assembly, push the capacity shell to the second position, and discharge the demulsifier in the capacity shell into the mixing tank. S3, starting the second driving assembly to drive the stirring blade to stir the liquid inside the stirring box; S4. Start the heater and the fan assembly at the same time. The fan assembly draws external air to the heater and discharges the heat generated by the heater to the air flow channel to heat the mixing box.

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