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CN103087762A - Crude oil dehydrater based on magnetic field and nonuniform electric field - Google Patents

Crude oil dehydrater based on magnetic field and nonuniform electric field Download PDF

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Publication number
CN103087762A
CN103087762A CN2013100410069A CN201310041006A CN103087762A CN 103087762 A CN103087762 A CN 103087762A CN 2013100410069 A CN2013100410069 A CN 2013100410069A CN 201310041006 A CN201310041006 A CN 201310041006A CN 103087762 A CN103087762 A CN 103087762A
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outer electrode
electrode
voltage connection
crude oil
electric field
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CN103087762B (en
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陈庆国
梁雯
宋春辉
王新宇
魏新劳
王永红
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Heilongjiang Run Electric Technology Co ltd
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Harbin University of Science and Technology
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Abstract

基于磁场和不均匀电场的原油脱水器,涉及一种原油脱水器,解决现有原油脱水器不能利用磁场和不均匀电场的联合作用对原油进行电破乳脱水处理与现有原油脱水器不能利用不均匀电场的电泳行为对原油进行电破乳脱水处理的问题。内电极套装在外电极内腔内,内电极外壁与外电极内壁之间形成脱水腔;外电极的一端通过绝缘密封垫与高压接线盒相连,高压接线盒内设有高压接线螺栓和接地螺栓,高压接线螺栓穿过绝缘密封垫与内电极相连,接地螺栓与外电极相连;外电极的远离高压接线盒的一端与端盖紧密连接,端盖上开设有出水口;外电极侧壁上开设有出油口和进液口;出油口与进液口之间设置有励磁线圈套装在外电极的外表面。本发明可广泛适用于海上原油脱水的工作。

Figure 201310041006

A crude oil dehydrator based on a magnetic field and an uneven electric field relates to a crude oil dehydrator, solving the problem that the existing crude oil dehydrator cannot use the combined action of the magnetic field and the uneven electric field to perform electric demulsification and dehydration of crude oil and that the existing crude oil dehydrator cannot be used Electrophoretic Behavior of Inhomogeneous Electric Fields for Electrodemulsification and Dehydration of Crude Oil. The inner electrode is set in the inner cavity of the outer electrode, and a dehydration chamber is formed between the outer wall of the inner electrode and the inner wall of the outer electrode; one end of the outer electrode is connected to the high-voltage junction box through an insulating gasket, and the high-voltage junction box is equipped with a high-voltage wiring bolt and a grounding bolt. The wiring bolts are connected to the inner electrode through the insulating gasket, and the grounding bolts are connected to the outer electrode; the end of the outer electrode away from the high-voltage junction box is closely connected to the end cover, and the end cover is provided with a water outlet; the side wall of the outer electrode is provided with an outlet. An oil port and a liquid inlet; between the oil outlet and the liquid inlet, an excitation coil is set on the outer surface of the outer electrode. The invention can be widely applied to the dehydration work of offshore crude oil.

Figure 201310041006

Description

Oil dehydrator based on magnetic field and non-uniform electric field
Technical field
The present invention relates to a kind of oil dehydrator.
Background technology
Along with the sustainable growth of national economy, energy demand is improved day by day, the supply of oil has become the strategic issue that affects Economic development.Along with the continuous minimizing of land crude oil reserve, the large oil production company in home and abroad turns one's attention to the exploitation of Crude Oil at Sea.The oil dehydrator of domestic land application at present adopts horizontal electrode and the perpendicular electrode structure of hanging, and electrode general using wire netting or metal plate consist of.Electric field between electrode is uniform electric field, and its dehydration mechanism is generally followed dipole coalescence under the voltage of alternating current effect, vibration is coalescent, and its dehydration mechanism is generally followed dipole coalescence and electrophoresis coalescence mechanism under the volts DS effect.Owing to being subjected to the maritime environment condition restriction, marine petroleum exploitation platform and land platform have very large difference, so the compactedness of marine petroleum exploitation, high efficiency and security are the important core problems that reduces cost of oil production, improves offshore oil exploitation efficient.And marine petroleum exploitation now uses existing oil dehydrator to have following problem: (1) existing oil dehydrator can not utilize the combined action of magnetic field and non-uniform electric field to carry out the electric demulsification processed to crude oil; (2) existing oil dehydrator can not utilize the electrophoresis behavior of non-uniform electric field to carry out the electric demulsification processed to crude oil.
Summary of the invention
The present invention can not utilize the combined action of magnetic field and non-uniform electric field to carry out the electric demulsification processed to crude oil in order to solve (1) existing oil dehydrator; (2) existing oil dehydrator can not utilize the electrophoresis behavior of non-uniform electric field crude oil to be carried out the problem of electric demulsification processed, thereby a kind of oil dehydrator based on magnetic field and non-uniform electric field is provided.
Based on the oil dehydrator of magnetic field and non-uniform electric field, it comprises interior electrode, outer electrode, insulated enclosure pad, high-voltage connection box, high-voltage connection bolt, earth stud, magnet coil and end cap;
Described interior electrode is columnar structure, and dispatch from foreign news agency is tubular structure very, and the external diameter of interior electrode is less than 1/3rd of the internal diameter of outer electrode, and it is inner that interior electrode sleeve is contained in the inner chamber of outer electrode, forms dewatering cavity between interior electrode outside surface and outer electrode internal surface;
One end of described outer electrode is connected with the high-voltage connection box by the insulated enclosure pad, is provided with high-voltage connection bolt and earth stud in the high-voltage connection box, and described high-voltage connection bolt passes the insulated enclosure pad and is connected with interior electrode, and earth stud is connected with outer electrode;
Described outer electrode closely is connected with end cap away from an end of high-voltage connection box, offers water outlet on described end cap;
Offer oil outlet on the sidewall of described outer electrode near an end of high-voltage connection box, offer fluid inlet on the sidewall of outer electrode away from an end of high-voltage connection box;
Be set with magnet coil on the outside surface of described outer electrode, described magnet coil is arranged on outer electrode between oil outlet and fluid inlet.
The present invention is based on the oil dehydrator of magnetic field and non-uniform electric field, comprise that following advantage (1) utilizes the combined action of magnetic field and non-uniform electric field can reduce the viscosity of crude oil Produced Liquid, improve particle water collision coalescence speed and dewatering efficiency in crude oil emulsion by the electric demulsification behavior; (2) utilize non-uniform electric field medium electrophoresis behavior to make uncharged neutral water particle be subjected to form induced dipole after electric field induction, particle water is moved to the strength of electric field maximum position, by non-uniform electric field, the Crude Electric Demulsification behavior is improved speed and the efficient of Crude Electric Demulsification dehydration.
Description of drawings
Fig. 1 is apparatus structure schematic diagram of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1, this embodiment is described.Based on the oil dehydrator of magnetic field and non-uniform electric field, it comprises interior electrode 1, outer electrode 2, insulated enclosure pad 3, high-voltage connection box 4, high-voltage connection bolt 5, earth stud 6, magnet coil 7 and end cap 14;
Described interior electrode 1 is columnar structure, and outer electrode 2 is tubular structure, and the external diameter of interior electrode 1 is less than 1/3rd of the internal diameter of outer electrode 2, and it is inner that interior electrode 1 is sleeved on the inner chamber of outer electrode 2, formation dewatering cavity 8 between interior electrode 1 outside surface and outer electrode 2 internal surfaces;
One end of described outer electrode 2 is connected with high-voltage connection box 4 by insulated enclosure pad 3, be provided with high-voltage connection bolt 5 and earth stud 6 in high-voltage connection box 4, described high-voltage connection bolt 5 passes insulated enclosure pad 3 and is connected with interior electrode 1, and earth stud 6 is connected with outer electrode 2;
Described outer electrode 2 closely is connected with end cap 14 away from an end of high-voltage connection box 4, offers water outlet 9 on described end cap 14;
Offer oil outlet 10 on the sidewall of described outer electrode 2 near an end of high-voltage connection box 4, offer fluid inlet 11 on the sidewall of outer electrode 2 away from an end of high-voltage connection box 4;
Be set with magnet coil 7 on the outside surface of described outer electrode 2, described magnet coil 7 is arranged on outer electrode 2 between oil outlet 10 and fluid inlet 11.
What embodiment two, this embodiment were different from embodiment one is that it also comprises interior electrode dielectric layer 12, and described interior electrode 1 outside surface is coated with interior electrode dielectric layer 12.
What embodiment three, this embodiment were different from embodiment one is that it also comprises high pressure inlet wire flange 13, and described high pressure inlet wire flange 13 is arranged on high-voltage connection box 4;
High-voltage connection bolt 5 in described high pressure inlet wire flange 13 and high-voltage connection box 4 is fixedly connected with.
Employing the present invention is based on the oil dehydrator of magnetic field and non-uniform electric field, high-voltage power supply is by in high pressure inlet wire flange 12 Indian high terminal boxes 1, be connected respectively on high-voltage connection bolt 2 and earth stud 13, high-voltage connection bolt 2 is connected with electrode 6 in stainless steel, when applying high-voltage power supply between electrode in stainless steel and stainless steel outer electrode, at the interior non-uniform electric field of setting up of dewatering cavity 11; At the outside magnet coil 5 that is wound around of stainless steel outer electrode, when do not set up magnetic field in magnet coil during galvanization in dewatering cavity 11, after crude oil emulsion enters dewatering cavity 11 from fluid inlet, steeping in water for reconstitution make crude oil under magnetic field and non-uniform electric field effect in is given birth to coalescent, water after coalescent sinks by gravity and flows out through water outlet 9, crude oil after dehydration flows out through oil outlet 4, thereby realizes the oily water separation purpose of crude oil emulsion.
Employing the present invention is based on the oil dehydrator of magnetic field and non-uniform electric field, and following two aspect advantages are arranged:
(1) utilize magnetic field, electric field combined action can reduce the viscosity of crude oil Produced Liquid, improve particle water collision coalescence speed and dewatering efficiency in crude oil emulsion.What the composition of crude oil mainly contained straight chain hydrocarbon, isomeric hydrocarbon, naphthenic hydrocarbon, mononuclear aromatics, condensed ring aromatic hydrocarbon, colloid, bituminous matter and different values changes the compositions such as nitrogen, sulphur and oxygen compound.Due to the effect of magnetic field to electron spinning and nuclear spin magnetic moment, not only make the generation of electron magnetic moment and nuclear magnetic moment around the additional precession in outfield, and the magnetic moment direction of portions of electronics and core is overturn, in the part c h bond, the antiparallel spin state is damaged thereby make, cause colloid and other intermolecular network association polymorphic segment disintegration in crude oil, the activity of molecule is increased, and mobility improves, reduced viscosity.Magnetic field and electric field combined action simultaneously can improve oscillation frequency and the amplitude of polarized water particle in crude oil emulsion, increases particle water collision coalescence speed in crude oil, improves dehydrating of crude oil efficient with this.
(2) utilize medium electrophoresis behavior raising crude oil electric dewatering efficient under non-uniform electric field.Under the non-uniform electric field effect, uncharged neutral water particle is subjected to can form induced dipole after electric field induction, the power suffered due to particle water two ends under the non-uniform electric field effect does not wait, a net effort towards the strong electric field gradient zone will be produced, be the trend that the oriented strength of electric field maximum position of particle water moves, bump coalescently with other disperse phase particle water in this process, it is coalescent that this phenomenon is called the medium electrophoresis.Be with the dipole coalescence difference whether it has other particle waters to exist around not relying on because this is coalescent, and square being directly proportional of the electrostatic coalescence power that produces and strength of electric field, that is: electrical forces is not subjected to the direction of an electric field variable effect to point to all the time the maximum direction of electric-force gradient, and the strength of electric field increase can cause the larger variation of dielectrophoresis force.Under obvious inhomogeneous electrode structure, all can produce medium electrophoresis coalescence force under direct current and voltage of alternating current effect, thereby improve speed and the efficient of crude oil electric dewatering.

Claims (3)

1. based on the oil dehydrator of magnetic field and non-uniform electric field, it is characterized in that it comprises interior electrode (1), outer electrode (2), insulated enclosure pad (3), high-voltage connection box (4), high-voltage connection bolt (5), earth stud (6), magnet coil (7) and end cap (14);
Described interior electrode (1) is columnar structure, outer electrode (2) is tubular structure, the external diameter of interior electrode (1) is less than 1/3rd of the internal diameter of outer electrode (2), interior electrode (1) is sleeved on the inner chamber inside of outer electrode (2), forms dewatering cavity (8) between interior electrode (1) outside surface and outer electrode (2) internal surface;
One end of described outer electrode (2) is connected with high-voltage connection box (4) by insulated enclosure pad (3), be provided with high-voltage connection bolt (5) and earth stud (6) in high-voltage connection box (4), described high-voltage connection bolt (5) passes insulated enclosure pad (3) and is connected with interior electrode (1), and earth stud (6) is connected with outer electrode (2);
Described outer electrode (2) closely is connected with end cap (14) away from an end of high-voltage connection box (4), offers water outlet (9) on described end cap (14);
Offer oil outlet (10) on the sidewall of described outer electrode (2) near an end of high-voltage connection box (4), offer fluid inlet (11) on the sidewall of outer electrode (2) away from an end of high-voltage connection box (4);
Be set with magnet coil (7) on the outside surface of described outer electrode (2), described magnet coil (7) is arranged on outer electrode (2) between oil outlet (10) and fluid inlet (11).
2. the oil dehydrator based on magnetic field and non-uniform electric field according to claim 1, is characterized in that it also comprises interior electrode dielectric layer (12), and described interior electrode (1) outside surface is coated with interior electrode dielectric layer (12).
3. the oil dehydrator based on magnetic field and non-uniform electric field according to claim 1, is characterized in that it also comprises high pressure inlet wire flange (13), and described high pressure inlet wire flange (13) is arranged on high-voltage connection box (4);
High-voltage connection bolt (5) in described high pressure inlet wire flange (13) and high-voltage connection box (4) is fixedly connected with.
CN201310041006.9A 2013-02-01 2013-02-01 Based on the oil dehydrator of magnetic field and non-uniform electric field Expired - Fee Related CN103087762B (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN103849428A (en) * 2014-03-17 2014-06-11 碧海舟(北京)石油化工设备有限公司 Electromagnetic field emulsion breaker
CN104927895A (en) * 2014-03-17 2015-09-23 碧海舟(北京)石油化工设备有限公司 High-acid crude oil electro-desalting process
CN108641743A (en) * 2018-04-16 2018-10-12 中国石油大学(华东) A kind of synchronous synergetic effect coalescing devices of high-efficiency electromagnetic
CN108658181A (en) * 2018-04-16 2018-10-16 中国石油大学(华东) The oil-water separation system of the synchronous synergetic effect of high-efficiency electromagnetic
CN110850066A (en) * 2019-12-13 2020-02-28 哈尔滨理工大学 A dynamic simulation test device for evaluating crude oil dehydrating demulsifier
CN111647420A (en) * 2020-06-10 2020-09-11 哈尔滨理工大学 Electromagnetic synergistic oil-water separation device and method
CN113307337A (en) * 2021-06-18 2021-08-27 重庆工商大学 Oil-in-water emulsion breaking and separating device for electric field coupling conductive particle bed layer
CN114507544A (en) * 2022-03-17 2022-05-17 中国海洋石油集团有限公司 Combined crude oil electric dehydrator based on multi-field synergistic effect

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103849428A (en) * 2014-03-17 2014-06-11 碧海舟(北京)石油化工设备有限公司 Electromagnetic field emulsion breaker
CN104927895A (en) * 2014-03-17 2015-09-23 碧海舟(北京)石油化工设备有限公司 High-acid crude oil electro-desalting process
CN103849428B (en) * 2014-03-17 2016-03-30 碧海舟(北京)石油化工设备有限公司 A kind of magnetoelectricity field emulsion treater
CN104927895B (en) * 2014-03-17 2017-02-22 碧海舟(北京)石油化工设备有限公司 High-acid crude oil electro-desalting process
CN108658181B (en) * 2018-04-16 2020-10-20 中国石油大学(华东) Oil-water separation system with efficient electromagnetic synchronous synergistic effect
CN108658181A (en) * 2018-04-16 2018-10-16 中国石油大学(华东) The oil-water separation system of the synchronous synergetic effect of high-efficiency electromagnetic
CN108641743B (en) * 2018-04-16 2020-04-21 中国石油大学(华东) A high-efficiency electromagnetic synchronous synergistic coalescing device
CN108641743A (en) * 2018-04-16 2018-10-12 中国石油大学(华东) A kind of synchronous synergetic effect coalescing devices of high-efficiency electromagnetic
CN110850066A (en) * 2019-12-13 2020-02-28 哈尔滨理工大学 A dynamic simulation test device for evaluating crude oil dehydrating demulsifier
CN111647420A (en) * 2020-06-10 2020-09-11 哈尔滨理工大学 Electromagnetic synergistic oil-water separation device and method
CN113307337A (en) * 2021-06-18 2021-08-27 重庆工商大学 Oil-in-water emulsion breaking and separating device for electric field coupling conductive particle bed layer
CN113307337B (en) * 2021-06-18 2022-06-10 重庆工商大学 Oil-in-water emulsion breaking and separating device for electric field coupling conductive particle bed layer
CN114507544A (en) * 2022-03-17 2022-05-17 中国海洋石油集团有限公司 Combined crude oil electric dehydrator based on multi-field synergistic effect

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