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.
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.