CN115161068B - Electric dehydration device applied to crude oil containing acidized flowback fluid - Google Patents
Electric dehydration device applied to crude oil containing acidized flowback fluid Download PDFInfo
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- CN115161068B CN115161068B CN202210926931.9A CN202210926931A CN115161068B CN 115161068 B CN115161068 B CN 115161068B CN 202210926931 A CN202210926931 A CN 202210926931A CN 115161068 B CN115161068 B CN 115161068B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/02—Dewatering or demulsification of hydrocarbon oils with electrical or magnetic means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
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Abstract
The invention discloses an electric dehydration device applied to crude oil containing acidized flowback fluid, which belongs to the technical field of crude oil electric dehydration and comprises an electric dehydrator control box and a plurality of electric dehydration tanks, wherein one side of the electric dehydrator control box is provided with the plurality of electric dehydration tanks, the plurality of electric dehydration tanks are arranged in a matched manner, the operation and adjustment of equipment are controlled by the control box, the top of the electric dehydration tanks is provided with a shield, the top of the electric dehydrator control box is provided with a display screen, the display screen can be used for setting parameters such as initial dehydration voltage, temperature and the like, the electric dehydrator control box is provided with a control component for controlling the electric dehydration tanks, test data are adjusted by the control component, and meanwhile, the dehydration current and the resistance in the electric dehydration tanks are displayed on the display screen, and the parameters such as dehydration voltage, dehydration electric field frequency and the like can be quickly adjusted by the control component. The invention can realize the efficient treatment of the crude oil containing the acidized flowback fluid, and is convenient for the operation of staff to monitor the data in real time.
Description
Technical Field
The invention relates to the technical field of crude oil electric dehydration, in particular to an electric dehydration device applied to acidized flowback fluid-containing crude oil.
Background
The dehydration of the extracted crude oil is one of the indispensable important links in the crude oil production process, but the components and the water content of the extracted crude oil are greatly different due to the different geological structures, crude oil types and oil extraction means of each oil field, so that the dehydration methods of the crude oil adopted by different oil fields are also different. Among the many dehydration methods, the electric dehydration method is one of the common and conventional methods for dehydrating crude oil in various oil fields at present, and is widely applied to an oil-water separation system of a joint station of various oil fields. At present, all domestic traditional electric dehydrators adopt bare electrodes, most of which use power frequency, and the other of which use high frequency.
The acidification technology has the characteristics of simple construction technology, low cost, quick response and the like, and is widely applied to various large oil fields at home and abroad. But besides the oil and water two phases in the acid-containing flowback liquid, a large amount of metal ions and stratum impurities are mixed, so that a relatively stable oil-water emulsion is formed. Because the flowback fluid contains more residual acid, a large amount of metal ions and hydrated clay are mixed, the emulsification is serious, the demulsification is difficult, the phenomena of frequent overcurrent, discharge and electric field crossing are caused when the flowback fluid enters the flowback treatment flow, the normal working state of the electric dehydration tank is influenced and basically cannot work, the water content of the dehydrated crude oil is lower than the standard, and the acidized flowback fluid of the oil field is difficult to treat and has become a difficult problem puzzled to people for many years.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the electric dehydration device applied to the acidized flowback crude oil, which can efficiently treat the acidized flowback crude oil, ensure the water content of the crude oil after dehydration and ensure the normal operation of equipment.
In order to solve the technical problems, the invention adopts the following technical scheme:
the electric dehydration device comprises an electric dehydrator control box and a plurality of electric dehydration tanks, wherein one side of the electric dehydrator control box is provided with a plurality of electric dehydration tanks for accommodating the electric dehydration tanks, the electric dehydration tanks are correspondingly placed in the electric dehydration tanks, the top of each electric dehydration tank is provided with a shield, and the electric dehydrator control box is provided with a control component for controlling the electric dehydration tanks; the top of the electric dehydrator control box is provided with a display screen for displaying the parameters of the initialized dehydration electric field in the electric dehydration tank.
Preferably, the control assembly comprises a power switch, an electric dehydration tank switch, a resistance test switch and a magnetic sliding block, wherein the power switch is arranged on the upper surface of the electric dehydration tank, the electric dehydration tank switch, the multi-pole multi-throw switch knob and the magnetic sliding block are used for controlling power supply and power failure of the electric dehydration tank, the electric dehydration tank switch is used for controlling start and stop of the electric dehydration tank, the magnetic sliding block is used for adjusting the electric field size in the electric dehydration tank, and the resistance test switch is connected with the resistance test assembly and used for detecting resistance between any two detection points in the electric dehydration tank.
Preferably, the side surface of the electric dehydrator control box is provided with an observation window corresponding to the electric dehydration tank; the magnetic sliding blocks are correspondingly arranged on the side wall of the control box of the electric dehydrator at the outer side of the electric dehydration tank.
Preferably, the three electric dewatering tanks are arranged in parallel, and the three electric dewatering tanks on one side of the electric dewatering device control box are correspondingly arranged; the shield is rotatably connected with one end of the top surface of the electric dewatering tank through a pin shaft.
Preferably, a sliding rail for accommodating a magnetic sliding block is arranged on the side wall of the electric dehydrator control box, and the magnetic sliding block can slide up and down along the sliding rail.
Preferably, the electric dehydration tank comprises a top cover, a tank body, an upper polar plate, a lower polar plate, a metal rod and an adjusting knob, wherein the lower polar plate is fixed at the bottom of the metal rod, the top of the metal rod passes through the top cover to be fixedly connected with the adjusting knob, and the adjusting knob is arranged above the top cover; the outer part of the metal rod is sleeved with a fixed insulating layer, the upper polar plate is sleeved outside the insulating layer, and the magnetic sliding block can attract the upper polar plate to move up and down along the insulating layer; a plurality of detection points are arranged on the insulating layer at intervals along the length direction of the insulating layer, and the detection points can be connected with the resistance test assembly through wires to move up and down; a plurality of detection points are arranged on the insulating layer at intervals along the length direction of the insulating layer, and the detection points can be connected with the resistance testing assembly through wires.
Preferably, the tank body is used for containing crude oil to be separated, and the volume of the crude oil is not more than 4/5 of the volume of the electric dehydration tank.
Preferably, the adjusting knob and the insulating layer are made of polytetrafluoroethylene.
Preferably, the outside of the electric dehydration tank is wrapped with an austenitic stainless steel shell, and the electric dehydration tank body is made of glass.
Preferably, the resistance test assembly comprises a plurality of probes, wherein the probes are connected with detection points in the electric dehydration tank through wires, and the detection points are arranged on an external insulating layer of a metal rod of the electric dehydration tank at intervals; the resistance test switch is a first multi-pole multi-throw switch knob and a second multi-pole multi-throw switch knob which are arranged on the top surface of the electric dehydrator control box, the plurality of probes are arranged on the periphery of the first multi-pole multi-throw switch knob and the second multi-pole multi-throw switch knob at intervals in a ring shape in two groups, and the first multi-pole multi-throw switch knob and the second multi-pole multi-throw switch knob can be matched with the probes on the periphery of the first multi-pole multi-throw switch knob and the second multi-pole multi-throw switch knob respectively.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in: compared with the prior art, the invention has the advantages that the plurality of electric dewatering tanks are arranged on one side of the electric dewatering tank, the plurality of electric dewatering tanks are arranged in a matched manner, the shield is arranged at the top of the electric dewatering tank through the operation and adjustment of control equipment of the control tank, the phenomena of liquid leakage, electric leakage and the like are prevented, the display screen is arranged at the top of the electric dewatering tank, the control component for controlling the electric dewatering tank is arranged on the display screen, the test data are adjusted through the control component, meanwhile, the dehydration current and the resistance change in the electric dewatering tank are displayed on the display screen, the visualization of the data is realized, and the parameters such as the dehydration voltage, the dehydration electric field frequency and the like can be quickly adjusted through the control component. The invention can realize the efficient treatment of the crude oil containing the acidized flowback fluid, and is convenient for the operation of staff to monitor the data in real time.
Drawings
FIG. 1 is a schematic diagram of an electric dewatering device for crude oil containing acidified flowback fluid according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of an electric dehydration tank in an embodiment of the invention;
FIG. 3 is a schematic view of the metal rod of FIG. 2;
FIG. 4 is a schematic view of an insulating layer according to an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the viewing window on the control box of the electric dehydrator of FIG. 1;
FIG. 6 is a schematic diagram of a resistance test switch in an embodiment of the invention;
in the figure: the device comprises a 1-display screen, a 2-power switch, a 3-electric dehydration tank switch, a 4-shield, a 5-first multi-pole multi-throw knob, a 6-second multi-pole multi-throw knob, a 7-glass window, an 8-adjusting knob, a 9-top cover, a 10-upper polar plate, a 11-lower polar plate, a 12-insulating layer, a 13-detection point, a 14-magnetic sliding block, a 15-observation window, a 16-probe and a 17-tank body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the electric dehydration device applied to the crude oil containing the acidized flowback fluid provided by the invention comprises an electric dehydrator control box and a plurality of electric dehydration tanks, wherein one side of the electric dehydrator control box is provided with a plurality of electric dehydration tanks for containing the electric dehydration tanks, the electric dehydration tanks are correspondingly placed in the electric dehydration tanks one by one, the top of each electric dehydration tank is provided with a shield 4, so that liquid splashing can be prevented, and the electric dehydrator control box is provided with a control component for controlling the electric dehydration tanks; the top of the electric dehydrator control box is provided with a display screen 1 for displaying the parameters of the initialized dehydration electric field in the electric dehydration tank, and the parameters such as the initial dehydration voltage, the dehydration electric field frequency, the temperature and the like can be set, and the electric dehydration frequency can be also adjusted. When the volume of the electric dehydration tank is specifically designed, comprehensively considering the system volume and the sample liquid utilization degree, an electric dehydration tank with the radius r=2 cm and the height h=10 cm is designed, and the volume of the electric dehydration tank is 125.66cm 3 The volume of the use is 100cm 3 。
In a specific embodiment of the present invention, as shown in fig. 1 and 6, the control assembly includes a power switch 2, an electric dehydration tank switch 3, a resistance test switch and a magnetic slider 14, which are disposed on an upper surface of the electric dehydrator control box, where the power switch 2 is used to control power on and power off of the electric dehydration tank, the electric dehydration tank switch, the resistance test switch and the magnetic slider 14, the electric dehydration tank switch 3 is used to control start and stop of the electric dehydration tank, adjust dehydration voltage and dehydration electric field frequency, the magnetic slider 14 is used to adjust movement of an upper polar plate 10 in the electric dehydration tank, and adjust electric field size in cooperation with a lower polar plate 11, and the resistance test switch is connected with the resistance test assembly and is used to detect resistance between any two detection points 13 in the electric dehydration tank.
As a preferable structure, as shown in fig. 1 and 5, the side surface of the electric dehydrator control box is provided with an observation window 15 corresponding to the electric dehydration tank, and the dehydration process in the electric dehydration tank can be seen through the observation window 15, so that dehydration can be seen by naked eyes, and visualization is realized. Wherein, the magnetic slide block 14 is correspondingly arranged on the side wall of the control box of the electric dehydrator at the outer side of the electric dehydration tank, and controls the upper polar plate 10 to move on the insulating layer 12.
In a specific design, the three electric dewatering tanks are arranged in parallel, and the three electric dewatering tanks on one side of the electric dewatering device control box are correspondingly arranged; the shield 4 is rotatably connected with one end of the top surface of the electric dewatering tank through a pin shaft, and the electric dewatering tank shield 4 is driven upwards, so that the working states of the electric dewatering tanks in the three electric dewatering tank positions can be observed. The side wall of the electric dehydrator control box is provided with a sliding rail for accommodating the magnetic sliding block 14, the magnetic sliding block 14 can slide up and down along the sliding rail, the sliding block 14 and the upper polar plate 10 are restrained by magnetic force, and the upper polar plate 10 is driven to move on the insulating layer 12 by the change of the position of the sliding block 14.
In a specific embodiment of the present invention, as shown in fig. 2-4, the electric dehydration tank includes a top cover 9, a tank 17, an upper polar plate 10, a lower polar plate 11, a metal rod and an adjusting knob 8, wherein the lower polar plate 11 is fixed at the bottom of the metal rod, the top of the metal rod passes through the top cover 9 to be fixedly connected with the adjusting knob 8, the adjusting knob 8 is arranged above the top cover 9, a fixed insulating layer 12 is sleeved outside the metal rod, and the lower polar plate 11 can be driven to lift by lifting the metal rod; the upper polar plate 10 is sleeved outside the insulating layer 12 in a sliding way, the insulating layer 12 is arranged between the upper polar plate 10 and the lower polar plate 11, a passage is not formed, and short circuit can be prevented; the magnetic slide block 14 can attract the upper polar plate 10 to move up and down along the insulating layer 12; the insulation layer 12 is provided with a plurality of detection points 13 at intervals along the length direction, the detection points 13 can be connected with probes 16 of the resistance test assembly one by one through wires, and the resistance between any two detection points 13 in the electric dehydration tank is detected through a resistance test switch. The upper polar plate 10 and the lower polar plate 11 can move up and down freely in the vertical direction, so that any position in the electric dehydration tank is used as the center of the electric dehydration process, and fixed-point type electric dehydration and rear-end type electric dehydration are realized.
During specific manufacturing, internal threads can be machined on the inner wall of the insulating layer 12, external threads are machined on the outer wall of the metal rod, and the internal threads and the external threads are matched through threads to fix the insulating layer 12 on the metal rod.
In addition, the upper polar plate 10 and the lower polar plate 11 adopt a double-electrode flat hanging mode, both the two polar plates adopt DR (dezincification prevention) brass sheet materials, are coated by ABS plastic, and are subjected to insulation treatment in advance. The ABS plastic outside the lower polar plate 11 forms an insulating layer, the insulating layer is provided with internal threads, and the lower polar plate 11 is fixed at the bottom of the metal rod through threads.
When the electric dehydration tank is particularly applied, the tank body 17 can contain crude oil to be separated, the volume of the crude oil is not more than 4/5 of the volume of the electric dehydration tank, and leakage and electric leakage accidents are prevented. The adjustment of the electric dehydration frequency is adjusted in real time by the electric dehydration frequency on the display screen 1. The position, the electric field magnitude and the electric field frequency of the upper polar plate 10 and the lower polar plate 11 are matched and adjusted, so that the aims of preventing electric field crossing and realizing high-efficiency electric dehydration can be achieved.
As shown in fig. 6, the resistance testing assembly includes two plurality of probes 16, and the probes 16 are connected to the probing points 13 on the metal rod insulating layer 12 in the electric dehydration tank one by one through wires; the resistance test switch is two multi-pole multi-throw switch knobs, namely a first multi-pole multi-throw switch knob 5 and a second multi-pole multi-throw switch knob 6, the two multi-pole multi-throw switch knobs are arranged on an electric dehydrator control box, a plurality of probes 16 are arranged on the periphery of the first multi-pole multi-throw switch knob 5 and the second multi-pole multi-throw switch knob 6 at annular intervals in two groups, the first multi-pole multi-throw switch knob 5 and the second multi-pole multi-throw switch knob 6 can be respectively matched with the plurality of probes 16 on the periphery one by one, and resistance detection between any two detection points is realized through a resistance test element. The resistance test elements are all of the prior art, and are not described herein. The resistance between any two detection points can be tested through the two multi-pole multi-throw switches, and the resistance is transmitted to the display screen through the A/D converter, so that the other visual effect is realized on the data, and the method is convenient and quick.
During specific manufacturing, the adjusting knob 8 and the insulating layer 12 are made of polytetrafluoroethylene materials, and the purpose of insulation can be achieved by adopting the polytetrafluoroethylene materials. In addition, wrap up the stainless steel shell of oo in the outside of electric dehydration jar, electric dehydration jar body 17 multiply glass material, and observation window 15 also adopts the preparation of sapphire glass material, and intensity is high, and is non-electrically conductive, does not have magnetism, satisfies the work requirement of electric dehydration, also conveniently observes dehydration observation simultaneously, realizes the visual requirement.
In conclusion, the invention has the advantages of simple and compact structure and convenient and quick operation, can efficiently treat the acidized flowback fluid-containing crude oil, ensures the water content of the crude oil after dehydration, effectively solves the problem that the water content of the crude oil is not up to standard due to frequent overcurrent, discharge and cross-electric field of the acidized well crude oil electric dehydrator, and ensures the normal operation of equipment.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. An electric dehydration device applied to crude oil containing acidized flowback fluid is characterized in that: the electric dehydrator comprises an electric dehydrator control box and a plurality of electric dehydration tanks, wherein one side of the electric dehydrator control box is provided with a plurality of electric dehydration tanks for accommodating the electric dehydration tanks, the electric dehydration tanks are correspondingly placed in the electric dehydration tanks, the top of each electric dehydration tank is provided with a shield, and the electric dehydrator control box is provided with a control assembly for controlling the electric dehydration tanks; a display screen is arranged at the top of the electric dehydrator control box and used for displaying the parameters of the initialized dehydration electric field in the electric dehydration tank;
the control assembly comprises a power switch, an electric dehydration tank switch, a resistance test switch and a magnetic sliding block which are arranged on the upper surface of the electric dehydrator control box, wherein the power switch is used for controlling the electric dehydration tank, the electric dehydration tank switch, the resistance test switch and the magnetic sliding block to obtain and lose electricity, the electric dehydration tank switch is used for controlling the start and stop of the electric dehydration tank, the magnetic sliding block is used for adjusting the electric field in the electric dehydration tank, and the resistance test switch is connected with the resistance test assembly and is used for detecting the resistance between any two detection points in the electric dehydration tank; a sliding rail for accommodating a magnetic sliding block is arranged on the side wall of the electric dehydrator control box, and the magnetic sliding block can slide up and down along the sliding rail; the electric dehydration tank comprises a top cover, a tank body, an upper polar plate, a lower polar plate, a metal rod and an adjusting knob, wherein the lower polar plate is fixed at the bottom of the metal rod, the top of the metal rod passes through the top cover to be fixedly connected with the adjusting knob, and the adjusting knob is arranged above the top cover; the outer part of the metal rod is sleeved with a fixed insulating layer, the upper polar plate is sleeved outside the insulating layer, and the magnetic sliding block can attract the upper polar plate to move up and down along the insulating layer; a plurality of detection points are arranged on the insulating layer at intervals along the length direction of the insulating layer, and the detection points can be connected with the resistance testing assembly through wires.
2. An electric dewatering device for acid-containing flowback crude oil as claimed in claim 1, wherein: the side surface of the electric dehydrator control box is provided with an observation window corresponding to the electric dehydration tank; the magnetic sliding blocks are correspondingly arranged on the side wall of the control box of the electric dehydrator at the outer side of the electric dehydration tank.
3. An electric dewatering device for acid-containing flowback crude oil as claimed in claim 1, wherein: the three electric dewatering tanks are arranged in parallel, and the three electric dewatering tanks on one side of the electric dewatering device control box are correspondingly arranged; the shield is rotatably connected with one end of the top surface of the electric dewatering tank through a pin shaft.
4. An electric dewatering device for acid-containing flowback crude oil as claimed in claim 1, wherein: the tank body is used for containing crude oil to be separated, and the volume of the crude oil is not more than 4/5 of the volume of the electric dehydration tank.
5. An electric dewatering device for acid-containing flowback crude oil as claimed in claim 1, wherein: the adjusting knob and the insulating layer are made of polytetrafluoroethylene.
6. An electric dewatering device for acid-containing flowback crude oil as claimed in claim 5, wherein: the outside of the electric dehydration tank is wrapped with an austenitic stainless steel shell, and the tank body of the electric dehydration tank is made of glass.
7. An electric dewatering device for acid-containing flowback crude oil according to any one of claims 1-6, wherein: the resistance test assembly comprises a plurality of probes, and the probes are connected with detection points in the electric dehydration tank through wires; the resistance test switch is a first multi-pole multi-throw switch knob and a second multi-pole multi-throw switch knob which are arranged on the top surface of the electric dehydrator control box, the plurality of probes are arranged on the periphery of the first multi-pole multi-throw switch knob and the second multi-pole multi-throw switch knob at intervals in a ring shape in two groups, and the first multi-pole multi-throw switch knob and the second multi-pole multi-throw switch knob can be matched with the probes on the periphery of the first multi-pole multi-throw switch knob and the second multi-pole multi-throw switch knob respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210926931.9A CN115161068B (en) | 2022-08-03 | 2022-08-03 | Electric dehydration device applied to crude oil containing acidized flowback fluid |
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| CN202210926931.9A CN115161068B (en) | 2022-08-03 | 2022-08-03 | Electric dehydration device applied to crude oil containing acidized flowback fluid |
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| CN115161068B true CN115161068B (en) | 2023-06-06 |
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| CN110317634A (en) * | 2019-08-07 | 2019-10-11 | 中石化炼化工程（集团）股份有限公司 | A kind of processing system and method for crude oil dewatering and desalting |
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| GB977124A (en) * | 1962-06-13 | 1964-12-02 | Howe Baker Eng | Method and apparatus for electrically treating emulsions |
| US4581120A (en) * | 1984-09-19 | 1986-04-08 | Combustion Engineering, Inc. | Method and apparatus for separating oilfield emulsions |
| CN101092572A (en) * | 2006-06-21 | 2007-12-26 | 中国科学院沈阳应用生态研究所 | Method for removing polymer and zoogloea in base oil |
| CN1888023A (en) * | 2006-07-17 | 2007-01-03 | 威海海和科技有限责任公司 | Electric field method and apparatus for dewatering and desalting raw oil |
| JP6104581B2 (en) * | 2012-12-03 | 2017-03-29 | 三菱重工業株式会社 | Apparatus and method for dehydrating water-containing oil |
| CN203048888U (en) * | 2013-01-10 | 2013-07-10 | 国家电网公司 | Dynamic visualized simulation device for crude oil electric dehydration |
| CN114426870A (en) * | 2022-01-10 | 2022-05-03 | 北京科安博科技有限公司 | Crude oil electric desalting equipment and electric desalting method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204224538U (en) * | 2014-11-18 | 2015-03-25 | 李庆银 | Mobile skid-mounted apparatus for electrodewatering |
| CN110317634A (en) * | 2019-08-07 | 2019-10-11 | 中石化炼化工程（集团）股份有限公司 | A kind of processing system and method for crude oil dewatering and desalting |
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