Multifunctional shale oil demulsification device
Through a multifunctional shale oil demulsification device combining ultrasonic wave, microwave and demulsifier, the problem of insufficient demulsification in the prior art is solved, and the efficient demulsification and dehydration effect is achieved, which reduces power consumption, and is simple in structure and easy to operate.
Patent Information
- Application Number
- CN202311732203.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-16
- Publication Date
- 2025-07-29
AI Technical Summary
The existing demulsification method is insufficient to demulsify shale oil emulsions with complex composition and severe emulsification and has a single function, resulting in poor demulsification effect.
A multifunctional shale oil demulsification device is designed, combining ultrasonic, microwave and demulsifier, using three ultrasonic transducers and four microwave sources, and automated control is achieved through the controller, and a DC baffle is used to prevent the mixing of the water layer and the oil layer, thereby improving the demulsification efficiency.
It realizes efficient demulsification and dehydration, improves demulsification efficiency, reduces power consumption, is simple in structure, is easy to operate, and has a high dehydration rate, saving labor and cost.
Smart Images
Figure CN120383953A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of demulsification treatment devices, and particularly relates to a multifunctional shale oil demulsification device. Background Art
[0002] As an unconventional oil and gas resource, shale oil is regarded as one of the important alternative energy sources in the 21st century, and the shale oil industry is an important part of the energy industry. Shale oil is a dark brown, viscous liquid with a special pungent smell, high density, high water content, and the oil and water do not separate layers, existing in the form of water-in-oil, which is not conducive to the full use of shale oil in industrial production.
[0003] At present, ultrasonic waves, microwaves, and demulsifiers all have their own advantages in demulsification. However, for shale oil emulsions with complex components and severe emulsification, the above three methods will have the problem of insufficient demulsification, resulting in a significant reduction in the demulsification effect. Summary of the Invention
[0004] The present invention aims to provide a multifunctional shale oil demulsification device, which solves the problems of insufficient demulsification and single demulsification function of the existing demulsification methods.
[0005] To achieve the above object, the technical solution of the present invention is as follows: A multifunctional shale oil demulsification device includes an oil storage tank. An exhaust port valve is connected to the top of the oil storage tank. An oil inlet pipe is connected to the side wall of the oil storage tank. An oil inlet valve and a jet mixer are provided on the oil inlet pipe. A demulsifier storage tank is provided on the jet mixer. An oil outlet valve and a water outlet valve are connected to the bottom of the oil storage tank at intervals. A DC baffle is provided between the oil outlet valve and the water outlet valve inside the oil storage tank. The DC baffle is connected to the inner walls of the front and rear sides of the oil storage tank. An ultrasonic transducer is further provided in the oil storage tank near the oil inlet pipe. A microwave source is provided directly below the ultrasonic transducer inside the oil storage tank.
[0006] Further, the number of the ultrasonic transducers is three, and the three ultrasonic transducers are arranged at intervals.
[0007] Through the above setting, the present solution uses three ultrasonic transducers to achieve a higher demulsification efficiency and reduced power consumption, with the best cost performance. If more ultrasonic transducers are added, it will lead to a decrease in demulsification efficiency and an increase in power consumption, which is determined by the contact area and the fluidity of the crude oil.
[0008] Further, the number of the microwave sources is four, and the four microwave sources are distributed at intervals between two adjacent ultrasonic transducers.
[0009] With the above settings, placing the microwave source in the gap between the two ultrasonic transducers enables it to come into full contact with the crude oil, allowing for balanced treatment of the incoming crude oil, achieving the highest demulsification efficiency, and being relatively convenient for maintenance and replacement.
[0010] Furthermore, the ultrasonic transducers and the microwave source are electrically connected to a controller.
[0011] Furthermore, the controller is electrically connected to the inlet valve, outlet valve, water outlet valve, and exhaust valve respectively.
[0012] With the above settings, automated control can be achieved with the help of the controller, improving the demulsification efficiency of the crude oil.
[0013] Furthermore, a DC baffle located in the oil storage tank is provided between the ultrasonic transducer and the inlet pipe, and the DC baffle is connected to the inner walls on the front and back sides of the oil storage tank.
[0014] With the above settings, the DC baffle can prevent the water layer after demulsification from mixing with the treated shale oil.
[0015] Compared with the prior art, the beneficial effects of this solution are:
[0016] The multifunctional shale oil demulsification device designed in the present invention comprehensively utilizes the characteristics of ultrasonic waves, microwaves, and demulsifiers to demulsify and dehydrate shale oil. The multifunctional shale oil demulsification device has a simple design structure, simple operation, easy automation implementation, reliable performance, and high dehydration rate, saving labor and costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of a multifunctional shale oil demulsification device of the present invention;
[0018] Figure 2 is a graph showing the variation of treatment time and dehydration rate of different demulsification methods in this embodiment. DETAILED DESCRIPTION OF THE INVENTION
[0019] The present invention will be further described in detail below through specific embodiments:
[0020] The reference numerals in the accompanying drawings of the specification include: ultrasonic transducer 1, microwave source 2, oil storage tank 3, demulsifier storage tank 4, bracket 5, inlet valve 6, DC baffle 7, outlet valve 8, water outlet valve 9, exhaust valve 10, controller 11, jet mixer 12.
[0021] Embodiment
[0022] As Figure 1As shown in the figure, a multifunctional shale oil demulsification device includes an oil storage tank 3. The top on the right side of the oil storage tank 3 is connected to an exhaust port valve 10. An oil inlet pipe is connected to the left side wall of the oil storage tank 3. An oil inlet valve 6 and a jet mixer 12 are successively arranged on the oil inlet pipe from right to left. A demulsifier storage tank 4 is installed on the jet mixer 12. With the help of the jet mixer 12, the combined demulsification process can proceed smoothly and continuously. The bottom on the right side of the oil storage tank 3 is connected to an oil outlet valve 8 and a water outlet valve 9 arranged at intervals. A DC baffle 7 located inside the oil storage tank 3 is arranged between the oil outlet valve 8 and the water outlet valve 9. Both DC baffles 7 are fixedly and hermetically connected to the inner walls on the front and rear sides of the oil storage tank 3. The oil outlet valve 8 is located on the right side of the DC baffle 7, and the water outlet valve 9 is located on the left side of the DC baffle 7. With the help of this DC baffle 7, the water layer after demulsification and the treated shale oil can be prevented from mixing. An ultrasonic transducer 1 close to the oil inlet pipe is also arranged inside the oil storage tank 3. The number of ultrasonic transducers 1 is three. The three ultrasonic transducers 1 are arranged at intervals in the oil storage tank through a fixing frame. A DC baffle 7 located inside the oil storage tank 3 is arranged between the ultrasonic transducer 1 and the oil inlet pipe. The DC baffle 7 is connected to the inner walls on the front and rear sides of the oil storage tank 3. This DC baffle 7 can prevent the original shale oil and the shale oil after demulsification from mixing. A microwave source 2 located inside the oil storage tank 3 is arranged directly below the ultrasonic transducer 1. The number of microwave sources 2 is four. The four microwave sources 2 are distributed at intervals between two adjacent ultrasonic transducers 1 through a bracket 5. The ultrasonic transducer 1 and the microwave source 2 are electrically connected to a controller 11. The controller 11 is respectively electrically connected to the oil inlet valve 6, the oil outlet valve 8, the water outlet valve 9, and the exhaust port valve 10. In this embodiment, the oil inlet valve 6, the oil outlet valve 8, the water outlet valve 9, and the exhaust port valve 10 all adopt solenoid valves.
[0023] The working process of this embodiment:
[0024] The oil inlet valve 6, the ultrasonic transducer 1, and the microwave source 2 are opened through the controller 11. After the shale oil is added with the demulsifier in the demulsifier storage tank 4, it is injected into the oil inlet pipe by the jet mixer 12. The shale oil mixed with the demulsifier enters the oil storage tank 3 through the oil inlet pipe. After the ultrasonic transducer 1 and the microwave source 2 are turned on for demulsification operation, the treated crude oil is discharged through the oil outlet valve 8. The water settles to the bottom due to gravity and is blocked by the DC baffle 7 between the oil outlet valve 8 and the water outlet valve 9 and is discharged through the water outlet valve 9. Gases such as natural gas are discharged from the exhaust port valve 10.
[0025] Comparing different demulsification and dehydration methods, different demulsification and dehydration methods are used to perform demulsification operations on crude oil, and the following Figure 2 results are obtained. Among them, the ultrasonic power is 150W, and the treatment time is 4min. The concentration of the chemical demulsifier used for chemical demulsifier demulsification and dehydration is 1%. The treatment temperature is 90°C, the dimensionless sound intensity is 0.3, and the treatment frequency is 20kHz.
[0026] From Figure 2 it can be seen that under the condition of sedimentation for 6 h, the dehydration rate of sedimentation dehydration can reach more than 30%, the ultrasonic dehydration rate can reach more than 70%, and the chemical dehydration rate is about 50%. When ultrasonic and chemical act jointly, the dehydration rate can be close to 90%. In terms of a dehydration rate of 70%, ultrasonic dehydration requires a sedimentation time of 6 h, while for the chemical dehydration rate to reach 70%, it requires a sedimentation of more than 10 h. Under this condition, the sedimentation time of ultrasonic dehydration will be shortened by about 40% compared with that of chemical dehydration. The reason is that the fluidity of heavy oil is poor, and the chemical demulsifier cannot be fully dispersed in the heavy oil emulsion, resulting in a poor demulsification and dehydration effect. When ultrasonic and chemical act jointly, due to the dispersion characteristics of ultrasonic waves, on the one hand, ultrasonic waves themselves have the effect of demulsification and dehydration. On the other hand, due to the dispersion effect of ultrasonic waves, the chemical demulsifier can be fully dispersed in the heavy oil emulsion, greatly improving the effect of the chemical demulsifier, thus increasing the dehydration rate. At the same time, in this solution, the effect of demulsification can also be improved by the microwave generated by the microwave source 2. The principle is that since the ability of water molecules to absorb microwaves is stronger than that of the oil molecules in the interfacial film, the internal phase water droplets absorb more energy and expand, causing the interfacial film to become thinner under the internal pressure. At the same time, the solubility of the oil in the interfacial film increases due to heat, making the mechanical strength of the interfacial film lower and easier to break. In addition, the magnetic field formed by the microwave also magnetizes the non-polar oil molecules, forming a vortex electric field at a certain angle with the axis of the oil molecules. This electric field can weaken the intermolecular attraction, reduce the viscosity of the oil, and thus increase the density difference between oil and water. All these effects enable the oil and water molecules to effectively collide and coalesce. The water droplets coalesce to a certain extent and settle to the bottom layer under the action of gravity, realizing the separation of oil and water.
[0027] The above are only embodiments of the present invention, and common knowledge such as specific structures and / or characteristics known in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.
Claims
1. A multifunctional shale oil demulsification device, characterized in that: It includes an oil storage tank (3). An exhaust port valve (10) is connected to the top of the oil storage tank (3). An oil inlet pipe is connected to the side wall of the oil storage tank (3). An oil inlet valve (6) and a jet mixer (12) are provided on the oil inlet pipe. A demulsifier storage tank (4) is provided on the jet mixer (12). An oil outlet valve (8) and a water outlet valve (9) which are spaced apart are connected to the bottom of the oil storage tank (3). A DC baffle (7) located inside the oil storage tank (3) is provided between the oil outlet valve (8) and the water outlet valve (9). The DC baffle (7) is connected to the inner walls of the front and rear sides of the oil storage tank (3). An ultrasonic transducer (1) close to the oil inlet pipe is further provided inside the oil storage tank (3). A microwave source (2) located inside the oil storage tank (3) is provided directly below the ultrasonic transducer (1).
2. The multifunctional shale oil demulsification device according to claim 1, wherein: The number of the ultrasonic transducers (1) is three, and the three ultrasonic transducers (1) are spaced apart.
3. The multifunctional shale oil demulsification device according to claim 1, characterized in that: The number of the microwave sources (2) is four, and the four microwave sources (2) are spaced and distributed between two adjacent ultrasonic transducers (1).
4. A multifunctional shale oil demulsification device according to claim 1, characterized in that: The ultrasonic transducers (1) and the microwave sources (2) are electrically connected to a controller (11).
5. The multifunctional shale oil demulsification device according to claim 4, wherein: The controller (11) is respectively electrically connected to the oil inlet valve (6), the oil outlet valve (8), the water outlet valve (9) and the exhaust port valve (10).
6. The multifunctional shale oil demulsification device according to claim 1, wherein: A DC baffle (7) located inside the oil storage tank (3) is provided between the ultrasonic transducer (1) and the oil inlet pipe. The DC baffle (7) is connected to the inner walls of the front and rear sides of the oil storage tank (3).