Ultrasonic demulsification and dehydration device for crude oil
Through the combined technology of ultrasonic vibration and hydrophilic-oleophobic coating, the problems of low efficiency, high energy consumption and poor applicability of existing crude oil dehydration equipment have been solved, and efficient, energy-saving and environmentally friendly crude oil dehydration effects have been achieved.
Patent Information
- Application Number
- CN202422334243.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing crude oil dehydration equipment has shortcomings in processing efficiency, energy consumption and operational complexity. The traditional gravity sedimentation method is slow and has limited applicability. In addition, the equipment is large in size, making it difficult to widely promote in industrial applications.
The system uses a combination of ultrasonic vibration device and hydrophilic-oleophobic coating technology to achieve oil-water separation through ultrasonic vibration, and uses a water content detector for intelligent adaptive control to adjust the frequency to suit different crude oil compositions. It also combines with a grid-shaped moisture collector to improve separation efficiency.
It achieves rapid and efficient dehydration of crude oil, simplifies operating procedures, reduces energy consumption, minimizes environmental impact, and adapts to the processing requirements of different crude oil components.
Smart Images
Figure CN223329249U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of petroleum development, in particular to a crude oil ultrasonic demulsification and dehydration device. Background Art
[0002] With growing energy demand, crude oil extraction and processing have become crucial components of the global oil industry. However, crude oil often contains significant amounts of water, necessitating dehydration to improve refining efficiency and reduce production costs. Current crude oil dehydration systems on the market often suffer from shortcomings in processing efficiency, energy consumption, and operational complexity. Traditional dehydration methods can lead to energy waste, environmental impact, and require frequent maintenance during operation.
[0003] Existing technology relies on gravity sedimentation, utilizing the density difference between the water and oil phases in crude oil to separate them by gravity. The device primarily consists of a specially designed settling tank, where crude oil is introduced under appropriate temperature and pressure conditions. After a period of stagnant water and sediment, the water and sediment gradually settle to the bottom, while the relatively clean crude oil is extracted from the upper portion.
[0004] However, the gravity sedimentation method still has some limitations. The sedimentation rate is relatively slow, requiring a long processing time, which may affect production efficiency. In addition, since gravity sedimentation is affected by factors such as crude oil composition and temperature, its applicability may be limited. In addition, compared with some mechanical equipment, the volume of gravity sedimentation equipment is relatively large, and space limitations need to be considered in actual industrial applications. Therefore, optimized design and further engineering improvements are the key to achieving wider application of this technology.
[0005] To address these issues, this utility model patent aims to provide a crude oil dehydration device that, through innovative technical means, achieves efficient dehydration, reduces energy consumption, simplifies operational procedures, and minimizes environmental impact. The device's flexible design adapts to varying crude oil compositions and processing requirements, providing the oil industry with a more advanced and sustainable crude oil dehydration solution. Summary of the Invention
[0006] The utility model aims to solve a series of technical problems existing in traditional crude oil dehydration methods and proposes a crude oil ultrasonic demulsification and dehydration device to improve dehydration efficiency, reduce energy consumption, simplify operation, and reduce impact on the environment.
[0007] The technical solution of the utility model is:
[0008] A crude oil ultrasonic demulsification and dehydration device comprises an ultrasonic dehydration device, the inlet of the ultrasonic dehydration device being connected to an oil inlet pipeline, and the outlet being provided with a water outlet and an exhaust outlet; a moisture collector being provided above the interior of the ultrasonic dehydration device, and being connected to the exhaust outlet; and an ultrasonic vibration device being further provided, one end of the ultrasonic vibration device being located outside the ultrasonic dehydration device, and the other end of the ultrasonic vibration device being located inside the ultrasonic dehydration device, and passing through the ultrasonic dehydration device and the moisture collector in sequence; a water content detector being provided on the oil inlet pipeline, and the ultrasonic vibration device being connected to the water content detector.
[0009] The ultrasonic vibration device includes an ultrasonic vibration rod and a power device; the power device is an ultrasonic controller; the ultrasonic controller is connected to a moisture content detector; one end of the ultrasonic vibration rod is located outside the ultrasonic dehydration device and connected to the ultrasonic controller, and the other end passes through the ultrasonic dehydration device and the moisture collector in sequence and is located below the moisture collector.
[0010] The ultrasonic controller is connected to the ultrasonic vibration rod via a frequency control line.
[0011] The moisture collector is a grid-like structure, and each grid is coated with a hydrophilic and oleophobic coating; a hole for the ultrasonic vibration rod to pass through is provided in the center of the grid-like structure.
[0012] The invention also comprises a water vapor discharge pipeline connected to the exhaust port, wherein a water vapor discharger is provided on the water vapor discharge pipeline.
[0013] Also included is a drain line connected to the drain outlet.
[0014] The ultrasonic dehydration device is a crude oil ultrasonic dehydrator. The water content detector is an automatic crude oil water content detector.
[0015] The oil inlet pipeline is also provided with a flow metering device; the flow metering device is a flow meter.
[0016] The technical effects of the utility model are:
[0017] The utility model adopts ultrasonic dehydration technology and realizes rapid and efficient dehydration of crude oil in oil fields through efficient and intelligent adaptive control, simplifies the operation process, improves the oil-water separation effect, and is green, energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a structural schematic diagram of a crude oil ultrasonic demulsification and dehydration device of the present utility model.
[0019] Figure 2 This is a top view of the moisture collector of the utility model.
[0020] Figure numerals: 1. Moisture collector; 2. Ultrasonic vibrator; 3. Flow metering device; 4. Frequency control line; 5. Ultrasonic controller; 6. Oil inlet pipeline; 7. Water vapor discharger; 8. Water vapor discharge pipeline; 9. Drainage pipeline; 10. Hydrophilic and oleophobic coating; 11. Moisture content detector. DETAILED DESCRIPTION
[0021] Example 1
[0022] A crude oil ultrasonic demulsification and dehydration device includes an ultrasonic dehydration device, the inlet of the ultrasonic dehydration device is connected to an oil inlet pipeline 6, and the outlet is provided with a water outlet and an exhaust port; a moisture collector 1 is also provided above the interior of the ultrasonic dehydration device, and the moisture collector 1 is connected to the exhaust port; the device also includes an ultrasonic vibration device, one end of the ultrasonic vibration device is located outside the ultrasonic dehydration device, and the other end passes through the ultrasonic dehydration device and the moisture collector 1 in sequence and is located inside the ultrasonic dehydration device; a water content detector 11 is provided on the oil inlet pipeline 6, and the ultrasonic vibration device is connected to the water content detector 11.
[0023] The specific implementation process of this embodiment is as follows:
[0024] External crude oil enters the ultrasonic dehydration device through the oil inlet pipeline 6. The oil inlet pipeline 6 is equipped with a water content detector 11, which can monitor the water content of the crude oil entering the oil inlet pipeline 6 in real time and adjust the frequency of the ultrasonic vibration device according to the feedback of the crude oil water content to adapt to different crude oil characteristics and achieve efficient and adaptive dehydration control;
[0025] The ultrasonic vibration device initially vibrates at an initial frequency of 22.5kHz. Low-frequency ultrasound has greater penetrating power and is suitable for processing large oil droplets or coarse emulsions. It triggers collisions between water droplets in the crude oil, causing them to flocculate and aggregate, achieving preliminary oil-water separation. When the crude oil water content is 60-85%, the specified frequency of the ultrasonic vibration device is adjusted to 21kHz; when the crude oil water content is 40-60%, the specified frequency is adjusted to 22.5kHz; and when the crude oil water content is below 40%, the specified frequency is adjusted to 25kHz. A small amount of separated water phase evaporates into water vapor due to the vibration of the ultrasonic vibration device. This vapor is collected by the moisture collector 1 and then discharged through the exhaust port, ensuring the smooth progress of the dehydration process. After a period of operation, the oil-water separation is complete. Due to the different densities, the crude oil floats above the interior of the ultrasonic dehydration device, while the separated water phase settles at the bottom and is discharged through the drain port.
[0026] Example 2
[0027] In accordance with Example 1, the present invention further comprises: the ultrasonic vibration device comprises an ultrasonic vibration rod 2 and a power device; the power device is an ultrasonic controller 5; the ultrasonic controller 5 is connected to a moisture content detector 11; one end of the ultrasonic vibration rod 2 is located outside the ultrasonic dehydration device and connected to the ultrasonic controller 5, and the other end passes through the ultrasonic dehydration device and the moisture collector 1 in sequence and is located below the moisture collector 1. The ultrasonic controller 5 and the ultrasonic vibration rod 2 are connected via a frequency control line 4.
[0028] The specific implementation process of this embodiment is as follows: the ultrasonic controller 5 automatically adjusts the specified frequency based on the water content of the crude oil, generates an electrical signal, and transmits it to the ultrasonic vibrator 2, causing the ultrasonic vibrator 2 to vibrate at the specified frequency. When the water content of the crude oil is 60-85%, the specified frequency is adjusted to 21kHz; when the water content of the crude oil is 40-60%, the specified frequency is adjusted to 22.5kHz; when the water content of the crude oil is below 40%, the specified frequency is adjusted to 25kHz. High-frequency ultrasonic waves have a shorter wavelength and are suitable for processing small oil droplets or finer emulsions. The appropriate ultrasonic frequency promotes oil-water separation in the crude oil tank, primarily by promoting the vaporization and coalescence of water droplets.
[0029] Example 3
[0030] Based on Example 2, the invention further comprises: the moisture collector 1 is a grid structure, each grid being coated with a hydrophilic-oleophobic coating 10; a hole is provided at the center of the grid structure for the ultrasonic vibrating rod 2 to pass through; the hydrophilic-oleophobic coating 10 is made of a nanomaterial, has a thickness of 1 mm to 4 mm, and an oleophobic angle greater than 150°.
[0031] The specific implementation process of this embodiment is as follows: Under the vibration of a specified ultrasonic frequency, the water in the crude oil is converted into a fine water mist, which is then introduced into the water collector 1. The application of the hydrophilic-oleophobic coating 10 allows the water in the crude oil to be quickly adsorbed and aggregated into water droplets when it contacts the surface of the grid structure, while the crude oil is effectively repelled due to its oleophobic properties. Each hydrophilic-oleophobic coating 10 is an independent hydrophilic-oleophobic unit, which together form a highly efficient water capture network, thereby improving the efficiency of collecting water from the crude oil.
[0032] Example 4
[0033] In accordance with Example 3, the present invention further comprises: a moisture discharge pipeline 8 connected to the exhaust port, equipped with a moisture discharger 7. Collected water is smoothly transported to the exterior of the ultrasonic dehydration device through the moisture discharge pipeline 8, thereby optimizing oil-water separation; a drainage pipeline 9 connected to the drain port, through which the separated water phase is discharged. The ultrasonic dehydration device is a crude oil ultrasonic dehydrator. The water content detector 11 is an automatic crude oil water content detector. A flow meter 3 is also provided on the oil inlet pipeline 6; the flow meter 3 is a flow meter.
[0034] The components involved in this utility model are all commercially available products; for example, the ultrasonic controller 5 is a Swedish AQ ultrasonic controller, and the crude oil water content automatic detector is an FDH-Z crude oil water content automatic detector.
Claims
1. A crude oil ultrasonic demulsification and dehydration device, comprising an ultrasonic dehydration device, wherein the inlet of the ultrasonic dehydration device is connected to an oil inlet pipeline (6), and the outlet is provided with a water outlet and an exhaust outlet; characterized in that: A moisture collector (1) is also provided above the interior of the ultrasonic dehydration device, and the moisture collector (1) is connected to the exhaust port; an ultrasonic vibration device is also included, one end of the ultrasonic vibration device is located outside the ultrasonic dehydration device, and the other end passes through the ultrasonic dehydration device and the moisture collector (1) in sequence and is located inside the ultrasonic dehydration device; a moisture content detector (11) is provided on the oil inlet pipeline (6); and the ultrasonic vibration device is connected to the moisture content detector (11).
2. The crude oil ultrasonic demulsification and dehydration device according to claim 1, characterized in that: The ultrasonic vibration device comprises an ultrasonic vibration rod (2) and a power device; the power device is an ultrasonic controller (5); the ultrasonic controller (5) is connected to a moisture content detector (11); one end of the ultrasonic vibration rod (2) is located outside the ultrasonic dehydration device and is connected to the ultrasonic controller (5), and the other end passes through the ultrasonic dehydration device and the moisture collector (1) in sequence and is located below the moisture collector (1).
3. The crude oil ultrasonic demulsification and dehydration device according to claim 2, characterized in that: The ultrasonic controller (5) is connected to the ultrasonic vibration rod (2) via a frequency control line (4).
4. The crude oil ultrasonic demulsification and dehydration device according to claim 2, characterized in that: The moisture collector (1) is a grid-like structure, and each grid is coated with a hydrophilic and oleophobic coating (10); a hole for the ultrasonic vibration rod (2) to pass through is provided at the center of the grid-like structure.
5. The crude oil ultrasonic demulsification and dehydration device according to claim 1, characterized in that: It also includes a water vapor discharge pipeline (8) connected to the exhaust port, and a water vapor discharger (7) is provided on the water vapor discharge pipeline (8).
6. The crude oil ultrasonic demulsification and dehydration device according to claim 1, characterized in that: Also included is a drainage pipeline (9) connected to the drainage outlet.
7. The crude oil ultrasonic demulsification and dehydration device according to claim 1, characterized in that: The ultrasonic dehydration device is a crude oil ultrasonic dehydrator.
8. The crude oil ultrasonic demulsification and dehydration device according to claim 1, characterized in that: The oil inlet pipeline (6) is also provided with a flow metering device (3).
9. The crude oil ultrasonic demulsification and dehydration device according to claim 8, characterized in that: The flow metering device (3) is a flow meter.
10. The crude oil ultrasonic demulsification and dehydration device according to claim 1, characterized in that: The water content detector (11) is an automatic detector for the water content of crude oil.