A high-frequency demulsification device for crude oil

Abstract

The utility model relates to crude oil separation technical field, concretely relates to a crude oil high frequency demulsification separation device, include: feed system, feed system includes mixing tank, one side of feed system is provided with high frequency demulsification unit, high frequency demulsification unit includes demulsification tank, the top fixedly connected with high frequency power supply of demulsification tank, the inside of demulsification tank is provided with electrode plate, the other side of high frequency demulsification unit is provided with gravity separation unit, gravity separation unit includes gravity sedimentation tank, the inside even fixedly connected with a plurality of inclined plate of gravity sedimentation tank, the other side of gravity separation unit is provided with cyclone separation unit, and cyclone separation unit includes cyclone separator, through the setting of high frequency demulsification unit, gravity separation unit and cyclone separation unit, can quickly destroy crude oil emulsification structure, improve demulsification efficiency, combine gravity sedimentation and cyclone separation technology, realize the depth separation of crude oil, water and impurity, and further greatly improved the separation effect.

Description

Technical Field

[0001] This utility model relates to the field of crude oil separation technology, specifically to a high-frequency crude oil demulsification and separation device. Background Technology

[0002] During crude oil extraction, due to complex geological conditions, crude oil usually forms a stable emulsion system with impurities such as water, silt, colloids, and asphalt. Emulsified crude oil not only increases the difficulty of transportation, but also causes problems such as corrosion and scaling on equipment during subsequent processing, reducing refining efficiency and product quality. Therefore, crude oil demulsification and separation is an indispensable key link in crude oil production and processing.

[0003] Currently, commonly used crude oil demulsification methods mainly include chemical demulsification, heating demulsification, and electric field demulsification. Chemical demulsification requires the addition of a large amount of chemical demulsifier, which not only increases production costs but may also cause environmental pollution. Heating demulsification has high energy consumption and is not effective for some high-pour-point crude oils. Traditional electric field demulsification methods mostly use power frequency or low-frequency electric fields, which have limited demulsification efficiency and cannot meet the growing demand for crude oil processing.

[0004] In addition, existing demulsification and separation equipment generally suffers from problems such as insufficient processing capacity, poor separation effect, large equipment size, and complex operation, and cannot meet the requirements of the expansion of crude oil extraction scale and changes in quality. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a crude oil high-frequency demulsification and separation device, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a high-frequency demulsification and separation device for crude oil, comprising: a feeding system including a mixing tank; a high-frequency demulsification unit is provided on one side of the feeding system, the high-frequency demulsification unit including a demulsification tank; a high-frequency power supply is fixedly connected to the top of the demulsification tank; an insulating support is fixedly connected inside the demulsification tank; electrode plates are fixedly connected to both sides of the bottom end of the insulating support; a gravity separation unit is provided on the other side of the high-frequency demulsification unit, the gravity separation unit including a gravity settling tank; several inclined plates are uniformly fixedly connected inside the gravity settling tank; and a cyclone separation unit is provided on the other side of the gravity separation unit, the cyclone separation unit including a cyclone separator.

[0008] Furthermore, a feed inlet is fixedly connected to one side of the top of the mixing tank, and a stirring device is fixedly connected to the top of the mixing tank.

[0009] Furthermore, the stirring device includes a drive motor, the output end of which is connected to a stirring paddle via a spline, and the stirring paddle is rotatably connected inside the mixing tank.

[0010] Furthermore, a magnetic level gauge is fixedly connected to one side of the mixing tank, and several support legs are evenly fixedly connected to the bottom of the mixing tank.

[0011] Furthermore, the electrode plates are distributed in parallel inside the demulsifying tank, and the electrode plates are electrically connected to the high-frequency power supply.

[0012] Furthermore, a first delivery pump is fixedly connected to one side of the demulsifying tank, a first connecting pipe is fixedly connected to the input end of the first delivery pump, the other end of the first connecting pipe is fixedly connected to the bottom end of the mixing tank, and a first solenoid valve is fixedly connected to the top end of the first connecting pipe.

[0013] Furthermore, a drain pipe is fixedly connected to the bottom of one end of the gravity settling tank, and a valve is fixedly connected to the top of the drain pipe.

[0014] Furthermore, a second connecting pipe is fixedly connected to one side of the gravity settling tank, and a second delivery pump is fixedly connected to the other end of the second connecting pipe. The input end of the second delivery pump is fixedly connected to the bottom end of the demulsifying tank, and a second solenoid valve is fixedly connected to the top end of the input end of the second delivery pump.

[0015] Furthermore, the top of the cyclone separator is fixedly connected to a crude oil outlet, the bottom of the cyclone separator is fixedly connected to a sludge outlet, one side of the top of the cyclone separator is fixedly connected to a third connecting pipe, the other end of the third connecting pipe is fixedly connected to a third conveying pump, and the input end of the third conveying pump is connected to the interior of the gravity settling tank.

[0016] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0017] By incorporating a high-frequency demulsification unit, a gravity separation unit, and a cyclone separation unit, the unique mechanism of the high-frequency alternating electric field is utilized to rapidly disrupt the crude oil emulsion structure, thereby significantly improving demulsification efficiency. Combined with gravity settling and cyclone separation technology, deep separation of crude oil, water, and impurities is achieved, which greatly improves the separation effect and meets the requirements of crude oil transportation and processing.

[0018] By using a high-frequency power supply and electrode plates, the water droplets in the crude oil emulsion undergo dipole coalescence and oscillatory coalescence processes under the action of a high-frequency alternating electric field. This causes the tiny water droplets to rapidly aggregate into larger droplets, thereby destroying the crude oil emulsion structure. Compared with the traditional heating demulsification method, this device reduces a large amount of heat energy consumption. The high-frequency demulsification technology can reduce the amount of chemical demulsifiers used, and in some cases, it can even eliminate the need for demulsifiers, thereby reducing production costs and environmental pollution. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-frequency crude oil demulsification and separation device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the overall front view structure of a high-frequency crude oil demulsification and separation device according to the present invention;

[0022] Figure 3 This is a schematic diagram of the feeding system structure of a high-frequency crude oil demulsification and separation device according to the present invention;

[0023] Figure 4 This is a schematic diagram of the high-frequency demulsification unit structure of a crude oil high-frequency demulsification and separation device according to the present invention;

[0024] Figure 5 This is a schematic diagram of the gravity separation unit structure of a high-frequency crude oil demulsification and separation device according to the present invention;

[0025] Figure 6 This is a schematic diagram of the cyclone separation unit structure of a high-frequency crude oil demulsification and separation device according to this utility model.

[0026] The labels in the diagram represent:

[0027] 1. Feeding System; 101. Mixing Tank; 102. Feed Inlet; 103. Stirring Device; 104. Magnetic Level Gauge; 105. Support Leg; 2. High-Frequency Demulsification Unit; 201. Demulsification Tank; 202. High-Frequency Power Supply; 203. Insulating Support; 204. Electrode Plate; 205. First Transfer Pump; 206. First Connecting Pipe; 207. First Solenoid Valve; 3. Gravity Separation Unit; 301. Gravity Settling Tank; 302. Inclined Plate; 303. Drain Pipe; 304. Valve; 305. Second Connecting Pipe; 306. Second Transfer Pump; 307. Second Solenoid Valve; 4. Cyclone Separation Unit; 401. Cyclone Separator; 402. Crude Oil Outlet; 403. Drain Outlet; 404. Third Connecting Pipe; 405. Third Transfer Pump. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] The present invention will be further described below with reference to the embodiments.

[0030] Example 1

[0031] Reference Figure 1-6 This is the first embodiment of the present invention, which discloses a high-frequency demulsification and separation device for crude oil, comprising: a feeding system 1, the feeding system 1 including a mixing tank 101, a high-frequency demulsification unit 2 provided on one side of the feeding system 1, the high-frequency demulsification unit 2 including a demulsification tank 201, a high-frequency power supply 202 fixedly connected to the top of the demulsification tank 201, an insulating support 203 fixedly connected inside the demulsification tank 201, and electrode plates 204 fixedly connected to both sides of the bottom end of the insulating support 203; a gravity separation unit 3 provided on the other side of the high-frequency demulsification unit 2, the gravity separation unit 3 including a gravity settling tank 301, a plurality of inclined plates 302 uniformly fixedly connected inside the gravity settling tank 301; and a cyclone separation unit 4 provided on the other side of the gravity separation unit 3, the cyclone separation unit 4 including a cyclone separator 401.

[0032] By setting up the high-frequency demulsification unit 2, gravity separation unit 3 and cyclone separation unit 4, the unique mechanism of the high-frequency alternating electric field can be used to quickly destroy the crude oil emulsion structure, thereby significantly improving the demulsification efficiency. Combined with gravity sedimentation and cyclone separation technology, deep separation of crude oil, water and impurities can be achieved, which greatly improves the separation effect and meets the requirements of crude oil transportation and processing.

[0033] Example 2

[0034] Reference Figure 1-6 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0035] A feed inlet 102 is fixedly connected to one side of the top of the mixing tank 101. A stirring device 103 is fixedly connected to the top of the mixing tank 101. The stirring device 103 includes a drive motor. The output end of the drive motor is connected to a stirring paddle via a spline. The stirring paddle is rotatably connected inside the mixing tank 101. A magnetic float level gauge 104 is fixedly connected to one side of the mixing tank 101. Several support legs 105 are evenly fixedly connected to the bottom of the mixing tank 101. Electrode plates 204 are parallelly distributed inside the demulsifying tank 201. The electrode plates 204 are electrically connected to a high-frequency power supply 202. A first delivery pump 205 is fixedly connected to one side of the demulsifying tank 201. A first connecting pipe 206 is fixedly connected to the input end of the first delivery pump 205. The other end of the first connecting pipe 206 is fixedly connected to the bottom of the mixing tank 101. A first solenoid valve 207 is fixedly connected to the top end of the first connecting pipe 206.

[0036] A drain pipe 303 is fixedly connected to the bottom of one end of the gravity settling tank 301, and a valve 304 is fixedly connected to the top of the drain pipe 303. A second connecting pipe 305 is fixedly connected to one side of the gravity settling tank 301, and a second transfer pump 306 is fixedly connected to the other end of the second connecting pipe 305. The input end of the second transfer pump 306 is fixedly connected to the bottom of the demulsifying tank 201, and a second solenoid valve 307 is fixedly connected to the top of the input end of the second transfer pump 306. A crude oil outlet 402 is fixedly connected to the top of the cyclone separator 401, and a drain port 403 is fixedly connected to the bottom of the cyclone separator 401. A third connecting pipe 404 is fixedly connected to one side of the top of the cyclone separator 401, and a third transfer pump 405 is fixedly connected to the other end of the third connecting pipe 404. The input end of the third transfer pump 405 is internally connected to the gravity settling tank 301.

[0037] With the high-frequency power supply 202 and electrode plate 204, under the action of a high-frequency alternating electric field, water droplets in crude oil emulsion undergo dipole coalescence and oscillatory coalescence processes, causing tiny water droplets to rapidly aggregate into larger droplets, thereby destroying the crude oil emulsion structure. Compared with the traditional heating demulsification method, this device reduces a large amount of heat energy consumption. The high-frequency demulsification technology can reduce the amount of chemical demulsifier used, and in some cases, it may even eliminate the need for demulsifier, thereby reducing production costs and environmental pollution.

[0038] The remaining structure is the same as that in Example 1.

[0039] The working principle of this utility model is as follows:

[0040] First, crude oil and demulsifier (if needed) are added together into mixing tank 101 through feed inlet 102. Then, stirring device 103 is started to mix them thoroughly. The mixed crude oil is then transported to demulsification tank 201 through first transfer pump 205. Then, high-frequency power supply 202 is started to demulsify the crude oil. High-frequency power supply 202 uses high-frequency inverter power supply and can generate a frequency range between 10kHz and 100kHz. The operator can set the frequency, voltage and other parameters of the electric field of high-frequency power supply 202 to adapt to crude oil emulsion systems with different properties. Through the setting of high-frequency power supply 202 and electrode plate 204, under the action of high-frequency alternating electric field, water droplets in crude oil emulsion undergo dipole coalescence, oscillating coalescence and other processes, which cause small water droplets to rapidly aggregate into larger water droplets, thereby destroying the crude oil emulsion structure. Compared with the traditional heating demulsification method, this device reduces a lot of heat energy consumption. High-frequency demulsification technology can reduce the amount of chemical demulsifier used, and in some cases, demulsifier is not needed, thereby reducing production costs and reducing environmental pollution.

[0041] Secondly, the crude oil after demulsification is transported to the gravity settling tank 301 by the second transfer pump 306. The crude oil, water and impurities are initially separated by the density difference. The gravity settling tank 301 is equipped with multiple inclined plates 302. The inclined plate 302 structure can increase the surface area for oil-water separation, shorten the water droplet settling distance, and improve the settling efficiency.

[0042] Finally, the crude oil at the top of the gravity settling tank 301 is transported to the hydrocyclone separator 401 via the third transfer pump 405. The hydrocyclone separator 401 uses the principle of centrifugal force to separate the fine water droplets and solid impurities remaining in the crude oil. During high-speed rotation, the denser water and impurities are thrown against the wall of the hydrocyclone separator 401 and flow downwards along the wall, and are discharged from the drain port 403. The less dense crude oil forms an inner vortex in the center and flows out from the top crude oil outlet 402, achieving deep separation of crude oil. Through the setting of the high-frequency demulsification unit 2, gravity separation unit 3 and hydrocyclone separation unit 4, the unique action mechanism of the high-frequency alternating electric field can quickly destroy the emulsion structure of crude oil, thereby significantly improving the demulsification efficiency. Combined with gravity settling and hydrocyclone separation technology, deep separation of crude oil, water and impurities is achieved, which greatly improves the separation effect and meets the requirements of crude oil transportation and processing.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A crude oil high-frequency demulsification and separation device, characterized in that, include: The feeding system includes a mixing tank. A high-frequency demulsification unit is provided on one side of the feeding system. The high-frequency demulsification unit includes a demulsification tank. A high-frequency power supply is fixedly connected to the top of the demulsification tank. An insulating support is fixedly connected inside the demulsification tank. Electrode plates are fixedly connected to both sides of the bottom end of the insulating support. A gravity separation unit is provided on the other side of the high-frequency demulsification unit. The gravity separation unit includes a gravity settling tank. Several inclined plates are uniformly fixedly connected inside the gravity settling tank. A cyclone separation unit is provided on the other side of the gravity separation unit. The cyclone separation unit includes a cyclone separator.

2. The crude oil high-frequency demulsification and separation device according to claim 1, characterized in that, A feed inlet is fixedly connected to one side of the top of the mixing tank, and a stirring device is fixedly connected to the top of the mixing tank.

3. The crude oil high-frequency demulsification and separation device according to claim 2, characterized in that, The stirring device includes a drive motor, and the output end of the drive motor is connected to a stirring paddle via a spline. The stirring paddle is rotatably connected inside the mixing tank.

4. The crude oil high-frequency demulsification and separation device according to claim 3, characterized in that, A magnetic level gauge is fixedly connected to one side of the mixing tank, and several support legs are evenly fixedly connected to the bottom of the mixing tank.

5. The high-frequency demulsification and separation device for crude oil according to claim 1, characterized in that, The electrode plates are arranged in parallel inside the demulsifying tank, and the electrode plates are electrically connected to the high-frequency power supply.

6. The crude oil high-frequency demulsification and separation device according to claim 1, characterized in that, A first delivery pump is fixedly connected to one side of the demulsifying tank. A first connecting pipe is fixedly connected to the input end of the first delivery pump. The other end of the first connecting pipe is fixedly connected to the bottom end of the mixing tank. A first solenoid valve is fixedly connected to the top end of the first connecting pipe.

7. The crude oil high-frequency demulsification and separation device according to claim 1, characterized in that, A drain pipe is fixedly connected to the bottom of one end of the gravity settling tank, and a valve is fixedly connected to the top of the drain pipe.

8. The high-frequency demulsification and separation device for crude oil according to claim 1, characterized in that, A second connecting pipe is fixedly connected to one side of the gravity settling tank, and a second conveying pump is fixedly connected to the other end of the second connecting pipe. The input end of the second conveying pump is fixedly connected to the bottom end of the demulsifying tank, and a second solenoid valve is fixedly connected to the top end of the input end of the second conveying pump.

9. The crude oil high-frequency demulsification and separation device according to claim 1, characterized in that, The top of the cyclone separator is fixedly connected to a crude oil outlet, the bottom of the cyclone separator is fixedly connected to a sludge outlet, a third connecting pipe is fixedly connected to one side of the top of the cyclone separator, and a third conveying pump is fixedly connected to the other end of the third connecting pipe. The input end of the third conveying pump is connected to the interior of the gravity settling tank.

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