CN209828348U - V-shaped electric agglomeration dehydration dynamic experimental device - Google Patents
V-shaped electric agglomeration dehydration dynamic experimental device Download PDFInfo
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- CN209828348U CN209828348U CN201920285073.8U CN201920285073U CN209828348U CN 209828348 U CN209828348 U CN 209828348U CN 201920285073 U CN201920285073 U CN 201920285073U CN 209828348 U CN209828348 U CN 209828348U
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Abstract
The utility model discloses a V-shaped dynamic experimental device for electrocoagulation dehydration, which comprises an oil-water emulsion preparation device, a V-shaped dynamic electrocoalescentor, an image acquisition and processing device and a recycling device; the oil-water emulsion preparation device comprises a settling tank, a water storage tank and a stirring kettle, wherein the settling tank and the water storage tank are respectively connected with an inlet of the stirring kettle, an oil-well pump is arranged between the settling tank and the stirring kettle, and a water outlet is formed in the bottom of the settling tank; the outlet of the stirring kettle is connected with the inlet at the top of the V-shaped dynamic electric coalescer through a diaphragm pump; one or more groups of V-shaped electrode plate groups are arranged in the V-shaped dynamic electric coalescer, each group of V-shaped electrode plate group comprises an upper electrode plate and a lower electrode plate, the upper electrode plate and the lower electrode plate are arranged in parallel in a V shape, the upper electrode plate is connected with the anode of the high-voltage electrostatic generator, and the lower electrode plate is connected with the cathode of the high-voltage electrostatic generator; circulation recovery unit is connected to V type developments electricity coalescence ware bottom, the utility model discloses a design is compact for current design structure, efficiency is higher.
Description
Technical Field
The utility model belongs to the technical field of the dynamic experimental facilities of dehydration, especially, relate to a V type electricity gathers knot dehydration dynamic experiment device.
Background
In the middle and later stages of domestic oil recovery, tertiary oil recovery methods such as chemical flooding, compound flooding and the like are used, so that the heavy and inferior crude oil is increasingly serious, the pretreatment difficulty is greatly increased, the water content and the oil content of cut water after dehydration are high, the problems of equipment corrosion and scaling, increased transportation energy consumption, catalyst inactivation and the like are easily caused, and great pressure is brought to the stable production of a device and the standard discharge of refinery sewage. Under the environment of 'green economy, low-carbon economy, energy conservation and emission reduction' vigorously advocated by the nation, how to improve the desalting and dewatering effects of heavy and poor crude oil and reduce the energy consumption of the device as far as possible becomes one of the problems to be solved urgently by petroleum and petrochemical enterprises.
The electric coalescence dehydration technology is widely applied due to the advantages of high efficiency, high speed, large processing capacity and the like. The basic principle is that water drops in the oil phase are polarized under the action of an external high-voltage electric field to form dipoles with different charges at two ends, and the direction of the dipoles is parallel to the direction of the electric field. The water drops coalesce under the action of an electric field to form large water drops, and the large water drops are rapidly settled and separated due to the existence of the density difference of oil and water. At present, most commercial electric coalescence dehydrators have the problems of large volume, high construction cost and the like. With the increasing concern of the marine energy strategy in China, the development of offshore oil fields is gradually increased. However, due to the limitations of offshore platform load bearing and area, the design of efficient and compact continuous type electric agglomeration dehydration device is in high demand. Research has found that researchers have more research on static state electro-coalescence dehydration, and relatively less research on-line dynamic electro-coalescence dehydration, and the compactness and dehydration efficiency are poor. Therefore, there is a need to design a new efficient compact experimental device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a V type electricity gathers knot dehydration dynamic experiment device according to the problem that exists among the prior art, and aim at provides compact structure, efficient electricity gathers knot dehydration dynamic experiment device.
The utility model discloses the technical scheme who adopts as follows:
a V-shaped dynamic experimental device for electrocoagulation dehydration comprises an oil-water emulsion preparation device, a V-shaped dynamic electrocoalescentor, an image acquisition and processing device and a circulating recovery device;
the oil-water emulsion preparation device comprises a settling tank, a water storage tank and a stirring kettle, wherein the settling tank and the water storage tank are respectively connected with an inlet of the stirring kettle, an oil-well pump is arranged between the settling tank and the stirring kettle, and a water outlet is formed in the bottom of the settling tank; the outlet of the stirring kettle is connected with the inlet at the top of the V-shaped dynamic electric coalescer through a diaphragm pump;
one or more groups of V-shaped electrode plate groups are arranged in the V-shaped dynamic electric coalescer, each group of V-shaped electrode plate group comprises an upper electrode plate and a lower electrode plate, the upper electrode plate and the lower electrode plate are arranged in a V-shaped parallel manner, the upper electrode plate is connected with the anode of the high-voltage electrostatic generator, and the lower electrode plate is connected with the cathode of the high-voltage electrostatic generator; the bottom of the V-shaped dynamic electric condenser is connected with a circulating recovery device;
the recycling device comprises a recycling liquid storage tank, and the recycling liquid storage tank is connected with the settling tank through a circulating pump;
the image acquisition and processing device comprises an observation unit and an image acquisition and post-processing device, the observation unit made of transparent materials is arranged between the V-shaped dynamic electric coalescer and the circulating recovery device, the image acquisition and post-processing device comprises a high-speed camera, the high-speed camera is arranged right opposite to the observation unit and used for acquiring picture information of emulsion in the observation unit, inputting the acquired picture information into an image post-processing system and analyzing the picture information;
furthermore, holes with the same size are uniformly formed in the same electrode plate; the sizes of the holes on the upper electrode plate and the lower electrode plate of the same group of V-shaped electrode plate groups are the same, and the holes on the upper electrode plate of the same group of V-shaped electrode plate groups are smaller than the holes on the lower electrode plate;
further, from top to bottom and from top to bottom, in the adjacent V-shaped electrode plate groups, the holes on the upper electrode plate of the next group are larger than the holes on the lower electrode plate of the previous group;
further, the electrode plate of the V-shaped electrode plate group is made of copper;
further, an insulating material is coated on the V-shaped electrode plate group;
further, the observation unit is made of transparent materials;
further, a water outlet is formed in the bottom of the settling tank.
The utility model has the advantages that:
the emulsion passes through the electrode plate, so that the effective contact area is large; the flowing direction of the emulsion is consistent with the direction of the electric field, so that the electrostatic acting force among water drops is increased; the inclination angle of the polar plate promotes large water drops to migrate to the center (tip) of the polar plate, so that the oil-water separation effect is enhanced; the bare electrode accelerates the transfer of electric charge, and water drops are charged after contacting the bare electrode, so that the water drop-water drop coalescence process is enhanced; the insulating electrode and the high-frequency pulse electric field are matched for use, so that the method can be used for the electrocoagulation dehydration process of high-water-content emulsion; by increasing the hydrophilicity of the electrode plate, large water drops can form a water film at the gap of the electrode plate, so that the water drop-interface coalescence process in the electric coalescence process is enhanced; there are three coalescence mechanisms for the process of electro-coalescence: water droplet dipolar polarization coalescence, electrophoretic coalescence and dielectrophoretic coalescence; the multiple groups of V-shaped electrode plate groups can be embedded simultaneously, and the electrode bar spacing is gradually increased from top to bottom, so that the compact design and modular design target of the electric coalescer is realized, and the volume of the shell is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a V-shaped compact electrocoagulation dehydration dynamic experimental device;
FIG. 2 is a schematic sectional view A-A of FIG. 1;
FIG. 3 is a graph of particle size distribution of initial water droplets and particle size distribution of water droplets after electro-coalescence of an oil-water emulsion;
the system comprises a PLC control cabinet 1, a PLC control cabinet 2, an observation unit 3, an image acquisition and post-processing device 301, a high-speed camera 302, an image post-processing system 4, a recovery liquid storage tank 5, a circulating pump 6, a settling tank 7, a water storage tank 8, an oil well pump 9, a stirring kettle 10, a diaphragm pump 11, an electromagnetic valve 12, a high-voltage electrostatic generator 13, a V-shaped dynamic electric coalescer 1301 and a V-shaped electrode plate group.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in figure 1, the V-shaped electric coagulation dewatering dynamic experimental device provided by the utility model comprises an outlet of a liquid storage tank 4 connected with a circulating pump 5 through a pipeline, an output end of the circulating pump 5 is connected with a settling tank 6, a water outlet is arranged at the bottom of the settling tank 6, an oil outlet of the settling tank 6 is connected with an oil pump 8, an outlet of the oil pump 8 is connected with a stirring kettle 9, an inlet of the stirring kettle 9 is connected with a water storage tank 7, an outlet of the stirring kettle 9 is connected with a diaphragm pump 10, an outlet of the diaphragm pump 10 is sequentially connected with an electromagnetic valve 11 and an inlet at the top of a V-shaped dynamic electric coalescer 13 through pipelines, one or more groups of V-shaped electrode plate groups 1301 can be arranged in the vertical direction in the V-shaped dynamic electric coalescer 13, each group of V-shaped electrode plate groups 1301 comprises an upper electrode plate and a lower electrode plate, the upper electrode plate and the lower electrode plate are arranged in, the lower electrode plate is connected with the negative electrode of the high-voltage electrostatic generator 12; in practical application, if the water content of the oil-water emulsion is high, an insulating material can be coated on an electrode plate and used in the process of electrocoagulation dehydration of high-water-content crude oil; if the water content of the oil-water emulsion is low, a hydrophilic material can be coated on the electrode plate to increase the hydrophilicity of the V-shaped electrode plate group 1301, and large water drops can form a water film at the gap of the electrode plate to enhance the water drop-interface coalescence process in the electro-coalescence process; the bottom of the V-shaped dynamic electric coalescer 13 is connected with the liquid storage tank 4 through a pipeline; be equipped with the observation unit 2 that a thin organic glass made on the pipeline of being connected with liquid storage pot 4, high-speed camera 301 just arranges observation unit 2 for the picture information of emulsion among the collection observation unit 2 has avoided the influence that the light transmissivity that leads to because emulsion layer is too thick descends, makes things convenient for high-speed camera 301 to collect the big water droplet image after the coalescence, and with the picture information input image post-processing system 302 of gathering, carries out the analysis to picture information. Motors in the diaphragm pump 10, the electromagnetic valve 11 and the stirring kettle 9 are respectively connected with the PLC control cabinet 1, and the PLC control cabinet 1 adjusts the emulsion flowing state in the V-shaped compact dynamic electric coalescer 13 by controlling the opening of the electromagnetic valve 11.
In the design of the utility model, as shown in fig. 2, the same electrode plate in the V-shaped electrode plate group 1301 is uniformly provided with holes with the same size; on the basis, the hole sizes of the upper electrode plate and the lower electrode plate of the V-shaped electrode plate group 1301 are the same; if two sets of V-shaped electrode plates 1301 are provided inside the V-shaped dynamic coalescer 13, the holes in the upper and lower electrode plates in the first set are the same size, the holes in the upper and lower electrode plates in the second set are the same size, but the holes in the second set are larger than the holes in the first set.
In addition, the utility model also provides another design, if two groups of V-shaped electrode plate groups 1301 are arranged in the V-shaped dynamic electric coalescer 13, the hole on the upper electrode plate in each group of V-shaped electrode plate groups 1301 is smaller than the hole on the lower electrode plate; and the holes on the second group of upper electrode plates are larger than the holes on the first group of lower electrode plates.
For a more clear explanation of the technical solution of the present invention, the following working process of the present invention is further explained in combination:
before use, all valves are kept in a closed state, water is injected into the water storage tank 7, oil is injected into the settling tank 6, all valves are opened, the oil-well pump 8 and the stirring kettle 12 are started, and oil and water respectively enter the stirring kettle 12 from the settling tank 6 and the water storage tank 7 under the action of the oil-well pump 8 and hydrostatic pressure to prepare the oil-water emulsion.
Starting the diaphragm pump 10, pumping the prepared oil-water emulsion into the V-shaped dynamic electric coalescer 13, wherein the emulsion flowing out of the electric coalescer passes through the observation unit 2, and when the high-voltage electrostatic generator 12 is not started, the initial picture information of the oil-water emulsion is obtained at the moment; after the high voltage electrostatic generator 12 is started, the image information obtained after the oil-water emulsion is subjected to electric coalescence is analyzed by the image post-processing system 302; the oil-water emulsion flowing out from the V-shaped dynamic electric coalescer 13 after the process of electric agglomeration and dehydration enters the recovery liquid storage tank 4, when a proper amount of oil-water emulsion exists in the recovery liquid storage tank 4, the circulating pump 5 is started to pump the emulsion to the settling tank 6 for the gravity settling process, because of the existence of the density difference of oil and water, the upper layer in the settling tank 6 is an oil phase, and the lower layer is a water phase; the upper oil phase of the settling tank 6 is pumped into the stirring kettle 9 under the action of the oil pump 8, so that the oil phase can be recycled. After the experiment is finished, the power supply of the high-voltage electrostatic generator 12 is cut off, and finally all valves are closed. As shown in figure 3, the picture of the initial water drop particle size distribution and the post-electrocoagulation water drop particle size distribution of the oil-water emulsion of the utility model has a scale of mm, namely, the distance between every two grids on the right side is 1 mm. The primary droplets are uniformly distributed in size as mu size droplets, and the arithmetic mean particle size is about 160 μm. After applying the external electric field, the difficult micron level water droplet quantity that realizes water oil separating obviously reduces, forms the big liquid droplet of mm level after the electric coalescence, and the maximum particle diameter is about 5mm, the utility model discloses show and promote the electric coalescence effect.
The above embodiments are only used for illustrating the design ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all the equivalent changes or modifications made according to the principles and design ideas disclosed by the present invention are within the protection scope of the present invention.
Claims (10)
1. A V-shaped electrocoagulation dewatering dynamic experimental device is characterized by comprising an oil-water emulsion preparation device, a V-shaped dynamic electrocoalescope (13), an image acquisition processing device and a circulation recovery device;
the oil-water emulsion preparation device comprises a stirring kettle (9), wherein the inlet of the stirring kettle (9) is respectively connected with a settling tank (6) and a water storage tank (7), and the outlet of the stirring kettle (9) is connected with the inlet of a V-shaped dynamic electric coalescer (13) through a diaphragm pump (10);
one or more groups of V-shaped electrode plate groups (1301) are arranged in the V-shaped dynamic electric coalescer (13), and the V-shaped electrode plate groups (1301) are connected with a high-voltage electrostatic generator (12); the bottom of the V-shaped dynamic electric coalescer (13) is connected with a circulating recovery device;
the recycling device comprises a recycling liquid storage tank (4), and the recycling liquid storage tank (4) is connected with a settling tank (6) through a circulating pump (5);
the image acquisition and processing device comprises an observation unit (2) and an image acquisition and post-processing device (3), wherein the observation unit (2) is arranged between the V-shaped dynamic electric coalescer (13) and the circulating recovery device, and the image acquisition and post-processing device (3) comprises a high-speed camera (301) and an image post-processing system (302).
2. The V-shaped electrocoagulation dewatering dynamic experimental device as claimed in claim 1, wherein each group of V-shaped electrode plate groups (1301) comprises an upper electrode plate and a lower electrode plate, the upper electrode plate and the lower electrode plate are arranged in a V-shaped parallel manner, the upper electrode plate is connected with a positive electrode of the high-voltage electrostatic generator (12), and the lower electrode plate is connected with a negative electrode of the high-voltage electrostatic generator (12).
3. The V-shaped electrocoagulation dewatering dynamic experimental device as claimed in claim 2, wherein holes with the same size are uniformly formed in the same electrode plate in the V-shaped electrode plate group (1301).
4. The V-shaped electrocoagulation dewatering dynamic experimental device as claimed in claim 3, wherein the holes in the upper electrode plate and the lower electrode plate of the same group of V-shaped electrode plate groups (1301) are the same in size.
5. The V-shaped electrocoagulation dewatering dynamic experimental device as claimed in claim 3, wherein the holes in the upper electrode plate of the same V-shaped electrode plate group (1301) are smaller than the holes in the lower electrode plate.
6. The dynamic experiment device for V-shaped electrocoagulation dehydration of claim 4 or 5, characterized in that, from top to bottom, in the adjacent V-shaped electrode plate group (1301), the holes on the upper electrode plate of the next group are larger than those on the lower electrode plate of the previous group.
7. The V-shaped electrocoagulation dewatering dynamic experimental device as claimed in claim 6, wherein the electrode plates of the V-shaped electrode plate group (1301) are made of copper.
8. The V-shaped electrocoagulation dewatering dynamic experimental apparatus according to claim 7, characterized in that the V-shaped electrode plate group (1301) is coated with an insulating material.
9. The V-shaped electrocoagulation dewatering dynamic experiment device according to claim 1, wherein the observation unit (2) is made of transparent material.
10. The V-shaped electrocoagulation dewatering dynamic experimental device as claimed in claim 1, wherein a water outlet is arranged at the bottom of the settling tank (6).
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| CN201920285073.8U CN209828348U (en) | 2019-03-06 | 2019-03-06 | V-shaped electric agglomeration dehydration dynamic experimental device |
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| CN201920285073.8U CN209828348U (en) | 2019-03-06 | 2019-03-06 | V-shaped electric agglomeration dehydration dynamic experimental device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064231A (en) * | 2019-03-06 | 2019-07-30 | 江苏大学 | A kind of V-type voltolisation knot dehydration dynamic experimental device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064231A (en) * | 2019-03-06 | 2019-07-30 | 江苏大学 | A kind of V-type voltolisation knot dehydration dynamic experimental device |
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Granted publication date: 20191224 Termination date: 20210306 |