Crude oil heating dehydration device

Abstract

The utility model belongs to the technical field of crude oil dehydration, and particularly relates to a crude oil heating dehydration device which comprises a separation box, a demulsification box is arranged on the right side of the separation box, a heating base is fixedly installed at the bottom of an inner cavity of the separation box, and a heating groove of a hopper-shaped structure is formed in the center of the heating base. A spiral heating pipe is mounted in the inner cavity of the heating seat and located on the inner side wall of the heating groove; by arranging the separation tank and the demulsification tank, primary separation and secondary separation are carried out on crude oil mixed liquid, more water in the crude oil mixed liquid is separated through the separation tank, and residual water in the crude oil mixed liquid is separated through the demulsification tank, so that the water content of the finally obtained crude oil is lower, and the quality of the crude oil is improved; the problem that a traditional device is insufficient in separation when oil-water mixed liquid is separated only by means of heating is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crude oil dehydration, in particular to a crude oil heating and dehydration device. Background Art

[0002] Water in crude oil is a common phenomenon in the development of oil and gas fields. Water-containing crude oil must be dehydrated and desalted before processing.

[0003] For example, the Chinese patent with publication number CN205295230U discloses a heating type crude oil dehydration device, including an installation box, the installation box includes an operating surface and a dehydration device, the operation box is arranged on the left side outside the installation box, and the dehydration device is arranged inside the installation box; the dehydration device includes a condenser, an oil-water separator and a reactor, the condenser is installed inside the installation box, the lower end of the condenser is provided with an oil-water separator, the right side of the oil-water separator is provided with a reactor, the oil-water separator is provided with a connecting pipe, the connecting pipe is connected to the upper end of the reactor, the lower end of the reactor is provided with a drain valve, and the reactor is also provided with a heating pipe and a sensor; the heating pipe and the sensor are connected to the operation box. The utility model uses profiles to assemble into a shelf, and the use of heating pipes for heating significantly shortens the heating time and dehydration time, improves the dehydration efficiency, and the lines and pipelines are added with protection boxes, which greatly improves the safety of employees.

[0004] This patent has some shortcomings when used, such as: the device in this patent heats the reactor and evaporates the water in the water-containing crude oil by high-temperature evaporation, but since the emulsion formed by the oil-water mixture in the water-containing crude oil is often in the state of oil-in-water or water-in-oil, the mixed emulsion in the oil-in-water state cannot be fully dehydrated by high-temperature heat treatment alone, so that the oil liquid finally separated still contains a lot of water. In view of this, we propose a crude oil heating dehydration device. Utility Model Content

[0005] The utility model aims to provide a crude oil heating and dehydration device to solve the problems raised in the above background technology.

[0006] In view of this, the utility model provides a crude oil heating and dehydration device, comprising:

[0007] A separation box, a demulsification box is arranged on the right side of the separation box, a heating seat is fixedly installed at the bottom of the inner cavity of the separation box, a heating groove with a bucket-shaped structure is opened at the center of the heating seat, and a spiral heating pipe is installed in the inner cavity of the heating seat and on the inner side wall of the heating groove;

[0008] Two groups of ultrasonic mechanisms, which are symmetrically arranged and both located in the inner cavity of the heating seat, and are used to generate ultrasonic waves and use ultrasonic waves to accelerate the separation of water and crude oil in the crude oil mixture;

[0009] A crude oil mixture inlet pipe, the crude oil mixture inlet pipe is fixedly installed on the left side wall of the separation box, the inner cavity of the separation box is provided with a collecting bucket, a hose is fixed at the bottom of the collecting bucket, and the other end of the hose passes through the right side wall of the separation box and extends to the outside, a connecting pipe is fixed at one end of the hose located at the outside, and the other end of the connecting pipe passes through the outer wall of the demulsification box and extends to the inner cavity of the demulsification box, and an oil pump is installed on the connecting pipe;

[0010] Drain pipe 1, the drain pipe 1 is fixedly installed at the bottom of the separation box, and the top of the drain pipe 1 passes through the lower surface of the separation box and extends to the bottom surface of the heating tank, and a valve 1 is fixedly installed at the bottom of the drain pipe 1;

[0011] A recovery component, which is located between the drain pipe 1 and the connecting pipe and is used to recover the crude oil at the bottom of the separation box;

[0012] A lifting assembly, which is located in the inner cavity of the separation box and is used to change the height of the collection bucket in the vertical direction;

[0013] A stirring assembly, the stirring assembly is located in the inner cavity of the demulsification tank and is used to accelerate the mixing of the crude oil and the demulsifier in the demulsification tank;

[0014] Drain pipe 2, the drain pipe 2 is fixedly installed on the lower surface of the demulsification box, an oil drain pipe is fixed on the lower surface of the demulsification box and located around the drain pipe 2, and valve 3 is fixedly installed on the drain pipe 2 and the oil drain pipe.

[0015] In the above technical solution, further, the ultrasonic mechanism includes:

[0016] An ultrasonic generator, the ultrasonic generator is fixedly installed in the inner cavity of the heating seat, wires are symmetrically fixed at both ends of the ultrasonic generator, and an ultrasonic transducer is connected to the end of the wire away from the ultrasonic generator, the ultrasonic transducer is fixedly installed on the upper surface of the heating seat near the corner, the bottom end of the ultrasonic transducer penetrates the upper surface of the heating seat and extends to the inner cavity of the heating seat and is fixedly connected to the wire, and the ultrasonic generator, the wire and the ultrasonic transducer are electrically connected.

[0017] In the above technical solution, further, the outer side of the ultrasonic generator is wrapped with a heat insulation layer.

[0018] In the above technical solution, further, the recycling component includes:

[0019] A check valve, the check valve is fixedly installed on the connecting pipe, and the check valve is located on the left side of the oil pump, a bottom liquid recovery pipe is fixed between the drain pipe 1 and the connecting pipe, a valve 2 is fixedly installed on the bottom liquid recovery pipe, one end of the bottom liquid recovery pipe is connected with the drain pipe 1, and the valve 1 is arranged below the drain pipe 1, the other end of the bottom liquid recovery pipe is arranged between the oil pump and the check valve, and the bottom liquid recovery pipe is connected with the connecting pipe.

[0020] In the above technical solution, further, the separation box and the demulsification box are both hollow structures with top openings, and an upper cover is fixedly installed at the top opening of the separation box.

[0021] In the above technical solution, further, the lifting assembly includes:

[0022] Two electric push rods are symmetrically arranged and fixedly mounted on the lower surface of the upper cover, a horizontal plate is fixed to the telescopic rod ends of the two electric push rods, a fixing frame is symmetrically fixed to the lower surface of the horizontal plate, and one end of the fixing frame away from the horizontal plate is fixed to the outer wall of the collecting bucket.

[0023] In the above technical solution, further, a liquid level sensor and a temperature sensor are fixedly mounted on the lower surface of the upper cover.

[0024] In the above technical solution, further, the stirring assembly includes:

[0025] A fixed plate is fixedly installed at the top opening of the demulsification tank, a stirring roller is rotatably installed at the center of the lower surface of the fixed plate, a plurality of stirring blades distributed in a circular pattern are fixed on the stirring roller, a motor is fixed on the upper surface of the fixed plate, and the output shaft of the motor passes through the upper surface of the fixed plate and extends to the bottom to be coaxially connected with the stirring roller.

[0026] In the above technical solution, further, an observation port is provided on the front side wall of the demulsification tank, a tempered glass is fixedly installed in the observation port, and a scale is provided on the tempered glass.

[0027] The beneficial effects of the utility model are:

[0028] 1. The crude oil heating and dehydration device, by setting a separation box and a demulsifier, allows the crude oil mixture to undergo primary and secondary separations. The separation box is used to separate more water in the crude oil mixture, and the demulsifier is used to separate the remaining water in the crude oil mixture, so that the water content of the final crude oil is low, the quality of the crude oil is improved, and the problem of insufficient separation when the traditional device only relies on heating to separate the oil-water mixture is solved.

[0029] 2. The crude oil heating and dehydration device, by setting an ultrasonic component, uses ultrasound to oscillate and separate the water-in-oil droplets in the crude oil mixture, thus solving the limitation that the traditional device cannot process the water-in-oil droplets in the oil-water mixture.

[0030] 3. The crude oil heating and dehydration device further improves the separation effect and separation efficiency of the water-containing crude oil by setting up a demulsifier, adding a demulsifier in the demulsifier, and using a stirring component to accelerate the reaction between the crude oil mixture and the demulsifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the distribution of parts in the inner cavity of the separation box and the demulsification box in the utility model;

[0033] Figure 3 It is a structural schematic diagram of the ultrasonic component in the utility model;

[0034] Figure 4 It is a structural schematic diagram of the pipeline distribution in the utility model;

[0035] Figure 5 It is a structural schematic diagram of the lifting assembly and the collecting bucket in the utility model;

[0036] Figure 6 It is an exploded schematic diagram of the observation port and the tempered glass in the utility model.

[0037] The symbols in the figure are:

[0038] 1. Separation box; 2. Demulsification box; 3. Heating seat; 4. Heating tube; 5. Ultrasonic generator; 6. Wire; 7. Ultrasonic transducer; 8. Crude oil mixture inlet pipe; 9. Collecting bucket; 10. Hose; 11. Connecting pipe; 12. Oil pump; 13. Check valve; 14. Drain pipe 1; 15. Valve 1; 16. Bottom liquid recovery pipe; 17. Valve 2; 18. Upper cover; 19. Electric push rod; 20. Horizontal plate; 21. Fixed frame; 22. Liquid level sensor; 23. Temperature sensor; 24. Fixed plate; 25. Stirring roller; 26. Motor; 27. Observation port; 28. Tempered glass; 29. ​​Scale; 30. Drain pipe 2; 31. Oil drain pipe; 32. Valve 3. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0040] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0042] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0043] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0044] Embodiment 1:

[0045] See also Figure 1 - Figure 6 As shown, this embodiment provides a crude oil heating and dehydration device, comprising:

[0046] A separation box 1, a demulsification box 2 is arranged on the right side of the separation box 1, a heating seat 3 is fixedly installed at the bottom of the inner cavity of the separation box 1, a heating groove with a bucket-shaped structure is opened at the center of the heating seat 3, and a spiral heating pipe 4 is installed in the inner cavity of the heating seat 3 and on the inner side wall of the heating groove;

[0047] Two sets of ultrasonic mechanisms, which are symmetrically arranged and both located in the inner cavity of the heating seat 3, and are used to generate ultrasonic waves and use ultrasonic waves to accelerate the separation of water and crude oil in the crude oil mixture;

[0048] A crude oil mixture inlet pipe 8 is fixedly installed on the left side wall of the separation box 1. A collecting bucket 9 is provided in the inner cavity of the separation box 1. A hose 10 is fixed at the bottom of the collecting bucket 9, and the other end of the hose 10 passes through the right side wall of the separation box 1 and extends to the outside. A connecting pipe 11 is fixed at one end of the hose 10 located outside, and the other end of the connecting pipe 11 passes through the outer wall of the demulsification box 2 and extends to the inner cavity of the demulsification box 2. An oil pump 12 is installed on the connecting pipe 11;

[0049] A drain pipe 14, which is fixedly installed at the bottom of the separation box 1, and the top of the drain pipe 14 passes through the lower surface of the separation box 1 and extends to the bottom surface of the heating tank, and a valve 15 is fixedly installed at the bottom of the drain pipe 14;

[0050] A recovery component, which is located between the drain pipe 14 and the connecting pipe 11 and is used to recover the crude oil at the bottom of the separation box 1;

[0051] A lifting assembly, which is located in the inner cavity of the separation box 1 and is used to change the height of the collecting bucket 9 in the vertical direction;

[0052] A stirring assembly, which is located in the inner cavity of the demulsification tank 2 and is used to accelerate the mixing of the crude oil and the demulsifier in the demulsification tank 2;

[0053] Drain pipe 2 30, drain pipe 2 30 is fixedly installed on the lower surface of the demulsification tank 2, an oil drain pipe 31 is fixed on the lower surface of the demulsification tank 2 and located around drain pipe 2 30, and valve 3 32 is fixedly installed on drain pipe 2 30 and oil drain pipe 31;

[0054] In this embodiment, the ultrasonic mechanism includes:

[0055] An ultrasonic generator 5, which is fixedly mounted in the inner cavity of the heating seat 3, with wires 6 symmetrically fixed at both ends of the ultrasonic generator 5, and an end of the wire 6 away from the ultrasonic generator 5 is connected to an ultrasonic transducer 7, which is fixedly mounted on the upper surface of the heating seat 3 near a corner, and a bottom end of the ultrasonic transducer 7 penetrates the upper surface of the heating seat 3 and extends to the inner cavity of the heating seat 3 and is fixedly connected to the wire 6, and the ultrasonic generator 5, the wire 6 and the ultrasonic transducer 7 are electrically connected;

[0056] In this embodiment, the recycling component includes:

[0057] A check valve 13, the check valve 13 is fixedly mounted on the connecting pipe 11, and the check valve 13 is located on the left side of the oil pump 12, a bottom liquid recovery pipe 16 is fixedly mounted between the drain pipe 14 and the connecting pipe 11, a valve 2 17 is fixedly mounted on the bottom liquid recovery pipe 16, one end of the bottom liquid recovery pipe 16 is connected to the drain pipe 14, and the valve 15 is arranged below the drain pipe 14, the other end of the bottom liquid recovery pipe 16 is arranged between the oil pump 12 and the check valve 13, and the bottom liquid recovery pipe 16 is connected to the connecting pipe 11;

[0058] In this embodiment, the lifting assembly includes:

[0059] Two electric push rods 19 are symmetrically arranged and fixedly mounted on the lower surface of the upper cover 18. The telescopic rod ends of the two electric push rods 19 are fixed with a transverse plate 20. The lower surface of the transverse plate 20 is symmetrically fixed with a fixing frame 21, and one end of the fixing frame 21 away from the transverse plate 20 is fixed to the outer wall of the collecting bucket 9;

[0060] In this embodiment, the stirring assembly includes:

[0061] A fixed plate 24 is fixedly installed at the top opening of the demulsification tank 2. A stirring roller 25 is rotatably installed at the center of the lower surface of the fixed plate 24. A plurality of stirring blades distributed in a circular pattern are fixed on the stirring roller 25. A motor 26 is fixed on the upper surface of the fixed plate 24, and the output shaft of the motor 26 passes through the upper surface of the fixed plate 24 and extends to the bottom to be coaxially connected with the stirring roller 25.

[0062] Among them, the working principle of this device is as follows:

[0063] The water-containing crude oil mixture is sent into the inner cavity of the separation box 1 through the crude oil mixture inlet pipe 8. The liquid level height of the crude oil mixture in the inner cavity of the separation box 1 is observed in real time through the liquid level sensor 22. When the liquid level reaches the predetermined position, the heating tube 4 is started, and the heating tube 4 works and generates heat, so that the temperature at the heating groove position on the heating seat 3 rises, thereby heating the mixed liquid in the inner cavity of the separation box 1. By heating the mixed liquid, the viscosity of the crude oil mixture is effectively reduced, and the separation of water in the crude oil is accelerated. Under the action of the density difference, the crude oil and the oil-in-water or oil-in-water droplets float up. , and the water sinks; the ultrasonic component is started, and the two ultrasonic generators 5 work, and transmit the electrical signal to the corresponding ultrasonic transducer 7 through the wire 6. The ultrasonic transducer 7 can convert electrical energy into sound energy. The ultrasonic wave propagates in the crude oil mixture. The ultrasonic wave causes the chemical bonds between the liquid molecules to change continuously through mechanical vibration, forming high-frequency eddy currents and severe shearing, thereby reducing the particle size of the oil-water mixture, increasing the surface activity, and improving the dispersibility, thereby accelerating the separation of crude oil and water, and making the oil droplets in the water-in-oil float out of the water droplets, thereby improving the separation effect of the crude oil mixture;

[0064] The oil at the upper layer is absorbed by the collecting bucket 9, and the lifting assembly and the oil pump 12 are started at this time. When the lifting assembly is working, the telescopic rod of the electric push rod 19 extends downward or upward, and the height of the collecting bucket 9 in the vertical direction is changed through the cross plate 20 and the fixing frame 21. Through the adjustment of the electric push rod 19, the edge of the upper surface of the collecting bucket 9 is just above the top liquid surface of the crude oil; at this time, under the action of the oil pump 12, the crude oil at the upper part continuously enters the collecting bucket 9 and enters the inner cavity of the demulsification box 2 through the hose 10 and the connecting pipe 11, and the water at the bottom of the separation box 1 is discharged to the outside through the drain pipe 14;

[0065] In the above process, when the water at the bottom of the inner cavity of the separation box 1 is nearly drained, the valve 15 is closed and the valve 2 17 is opened, and the oil pump 12 transports part of the crude oil and a small amount of water at the bottom of the inner cavity of the separation box 1 to the inner cavity of the demulsification box 2. At this time, the check valve 13 works to avoid backflow.

[0066] When the crude oil mixture in the demulsifier tank 2 is subjected to secondary separation, a demulsifier is added to the inner cavity of the demulsifier tank 2 through the top opening of the demulsifier tank 2, and the stirring assembly is started. At this time, the output shaft of the motor 26 rotates and drives the stirring roller 25 to rotate. The multiple stirring blades on the stirring roller 25 stir and mix the crude oil mixture and the demulsifier in the separation tank 1. Under the action of the demulsifier, the oil film outside the oil-in-water droplets is broken, and oil-water separation occurs. At this time, water is deposited at the bottom of the demulsifier tank 2. Then, the valve three 32 on the drain pipe 2 30 is opened to drain the water at the bottom of the inner cavity of the demulsifier tank 2 first. Then, the valve three 32 on the drain pipe 2 30 is closed and the valve three 32 on the oil drain pipe 31 is opened to discharge the separated crude oil from the oil drain pipe 31.

[0067] By setting up the separation box 1 and the demulsifier box 2, the crude oil mixture undergoes primary separation and secondary separation. The separation box 1 is used to separate more water in the crude oil mixture, and the demulsifier box 2 is used to separate the remaining water in the crude oil mixture, so that the water content of the crude oil finally obtained is low, the quality of the crude oil is improved, and the problem of insufficient separation when the traditional device only relies on heating to separate the oil-water mixture is solved; by setting up an ultrasonic component, ultrasonic waves are used to oscillate and separate the water-in-oil droplets in the crude oil mixture, which solves the limitation that the water-in-oil droplets in the oil-water mixture cannot be processed in the traditional device; by setting up the demulsifier box 2, adding a demulsifier in the demulsifier box 2, and using a stirring component to accelerate the reaction between the crude oil mixture and the demulsifier, the separation effect and separation efficiency of the device for water-containing crude oil are further improved.

[0068] Embodiment 2:

[0069] This embodiment provides a crude oil heating and dehydration device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the outer side of the ultrasonic generator 5 is wrapped with a heat insulation layer.

[0070] Among them, by arranging a heat insulation layer on the outer side of the ultrasonic generator 5, the adverse effect of the high temperature generated by the heating tube 4 during operation on the ultrasonic generator 5 can be effectively reduced, thereby improving the stability and service life of the device.

[0071] Embodiment 3:

[0072] This embodiment provides a crude oil heating and dehydration device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the separation box 1 and the demulsification box 2 are both hollow structures with top openings, and an upper cover 18 is fixedly installed at the top opening of the separation box 1.

[0073] By providing the upper cover 18, the inner cavity of the separation box 1 is made into a closed structure, which can improve the heating efficiency in the separation box 1 and the heat preservation efficiency of the crude oil in the device.

[0074] Embodiment 4:

[0075] This embodiment provides a crude oil heating and dehydration device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: a liquid level sensor 22 and a temperature sensor 23 are fixedly mounted on the lower surface of the upper cover 18 .

[0076] The liquid level sensor 22 is provided to facilitate real-time observation of the liquid level of the crude oil mixture in the inner cavity of the separation box 1 , and the temperature sensor 23 is provided to facilitate real-time observation of the temperature of the crude oil mixture in the inner cavity of the separation box 1 .

[0077] Embodiment 5:

[0078] This embodiment provides a crude oil heating and dehydration device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: an observation port 27 is opened on the front side wall of the demulsification box 2, and a tempered glass 28 is fixedly installed in the observation port 27, and a scale 29 is set on the tempered glass 28.

[0079] The observation port 27 is provided and the tempered glass 28 is arranged in the observation port 27, so that the height of the crude oil and water in the inner cavity of the demulsification tank 2 can be observed. The scale 29 can be provided to estimate the solvent of the crude oil mixture in the inner cavity of the demulsification tank 2.

[0080] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A crude oil heating and dehydration device, characterized in that: include: A separation box (1), a demulsification box (2) being arranged on the right side of the separation box (1), a heating seat (3) being fixedly mounted on the bottom of the inner cavity of the separation box (1), a heating groove with a bucket-shaped structure being opened at the center of the heating seat (3), and a spiral heating pipe (4) being mounted on the inner wall of the inner cavity of the heating seat (3) and located on the inner side wall of the heating groove; Two groups of ultrasonic mechanisms, the two groups of ultrasonic mechanisms are symmetrically arranged and both are located in the inner cavity of the heating seat (3), and are used to generate ultrasonic waves and use ultrasonic waves to accelerate the separation of water and crude oil in the crude oil mixture; A crude oil mixed liquid inlet pipe (8), the crude oil mixed liquid inlet pipe (8) is fixedly mounted on the left side wall of the separation box (1), the inner cavity of the separation box (1) is provided with a collecting bucket (9), a hose (10) is fixed at the bottom of the collecting bucket (9), and the other end of the hose (10) passes through the right side wall of the separation box (1) and extends to the outside, a connecting pipe (11) is fixed at one end of the hose (10) located outside, and the other end of the connecting pipe (11) passes through the outer wall of the demulsification box (2) and extends to the inner cavity of the demulsification box (2), and an oil pump (12) is installed on the connecting pipe (11); Drain pipe 1 (14), the drain pipe 1 (14) is fixedly mounted on the bottom of the separation box (1), and the top end of the drain pipe 1 (14) passes through the lower surface of the separation box (1) and extends to the bottom surface of the heating tank, and a valve 1 (15) is fixedly mounted on the bottom of the drain pipe 1 (14); A recovery component, the recovery component is located between the drainage pipe 1 (14) and the connecting pipe (11), and is used to recover the crude oil at the bottom of the separation box (1); A lifting assembly, the lifting assembly being located in the inner cavity of the separation box (1) and being used to change the height of the collection bucket (9) in the vertical direction; A stirring component, the stirring component is located in the inner cavity of the demulsification tank (2) and is used to accelerate the mixing of the crude oil and the demulsifier in the demulsification tank (2); Drain pipe 2 (30), the drain pipe 2 (30) is fixedly mounted on the lower surface of the demulsification tank (2), an oil drain pipe (31) is fixedly mounted on the lower surface of the demulsification tank (2) and located around the drain pipe 2 (30), and valve 3 (32) is fixedly mounted on both the drain pipe 2 (30) and the oil drain pipe (31).

2. The crude oil heating and dehydration device according to claim 1, characterized in that: The ultrasonic mechanism comprises: An ultrasonic generator (5), the ultrasonic generator (5) being fixedly mounted in the inner cavity of the heating seat (3), wires (6) being symmetrically fixed at both ends of the ultrasonic generator (5), and an end of the wire (6) away from the ultrasonic generator (5) being connected to an ultrasonic transducer (7), the ultrasonic transducer (7) being fixedly mounted on the upper surface of the heating seat (3) near a corner, the bottom end of the ultrasonic transducer (7) penetrating the upper surface of the heating seat (3) and extending to the inner cavity of the heating seat (3) to be fixedly connected to the wire (6), and the ultrasonic generator (5), the wire (6) and the ultrasonic transducer (7) being electrically connected.

3. The crude oil heating and dehydration device according to claim 2, characterized in that: The outer side of the ultrasonic generator (5) is wrapped with a heat insulation layer.

4. The crude oil heating and dehydration device according to claim 1, characterized in that: The recycling assembly comprises: A check valve (13) is fixedly mounted on the connecting pipe (11), and the check valve (13) is located on the left side of the oil pump (12); a bottom liquid recovery pipe (16) is fixedly mounted between the drain pipe 1 (14) and the connecting pipe (11); a valve 2 (17) is fixedly mounted on the bottom liquid recovery pipe (16); one end of the bottom liquid recovery pipe (16) is connected to the drain pipe 1 (14), and the valve 1 (15) is arranged below the drain pipe 1 (14); the other end of the bottom liquid recovery pipe (16) is arranged between the oil pump (12) and the check valve (13), and the bottom liquid recovery pipe (16) is connected to the connecting pipe (11).

5. The crude oil heating and dehydration device according to claim 1, characterized in that: The separation box (1) and the demulsification box (2) are both hollow structures with top openings, and an upper cover (18) is fixedly mounted at the top opening of the separation box (1).

6. The crude oil heating and dehydration device according to claim 5, characterized in that: The lifting assembly comprises: Two electric push rods (19) are symmetrically arranged and fixedly mounted on the lower surface of the upper cover (18); a transverse plate (20) is fixed to the telescopic rod ends of the two electric push rods (19); a fixing frame (21) is symmetrically fixed to the lower surface of the transverse plate (20); and an end of the fixing frame (21) away from the transverse plate (20) is fixed to the outer wall of the collecting bucket (9).

7. The crude oil heating and dehydration device according to claim 5, characterized in that: A liquid level sensor (22) and a temperature sensor (23) are fixedly mounted on the lower surface of the upper cover (18).

8. The crude oil heating and dehydration device according to claim 5, characterized in that: The stirring assembly comprises: A fixed plate (24) is fixedly mounted at the top opening of the demulsification tank (2); a stirring roller (25) is rotatably mounted at the center of the lower surface of the fixed plate (24); a plurality of stirring blades distributed in a circular pattern are fixed to the stirring roller (25); a motor (26) is fixed to the upper surface of the fixed plate (24); and an output shaft of the motor (26) passes through the upper surface of the fixed plate (24) and extends downward to be coaxially connected to the stirring roller (25).

9. The crude oil heating and dehydration device according to claim 1, characterized in that: The front side wall of the demulsification tank (2) is provided with an observation port (27), a tempered glass (28) is fixedly installed in the observation port (27), and a scale (29) is arranged on the tempered glass (28).

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