CN102585892B - Crude oil electro-desalting dehydrator based on double-phase and single-phase rectifier power supply - Google Patents
Crude oil electro-desalting dehydrator based on double-phase and single-phase rectifier power supply Download PDFInfo
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Abstract
The embodiment of the invention provides a crude oil electro-desalting dehydrator based on a double-phase and single-phase rectifier power supply so as to improve the electro-desalting dehydration efficiency. The crude oil electro-desalting dehydrator is provided with a positive electrode network and/or a negative electrode network, wherein a grounding electrode network is arranged between the electrode networks of the crude oil electro-desalting dehydrator. The technical scheme of the embodiment of the invention has the following beneficial effects that a technological means that the grounding electrode network is arranged between the positive electrode network and the negative electrode network of the crude oil electro-desalting dehydrator is utilized, and the electrode network arrangement distribution method of alternating current and direct current electric fields with the grounding electrode network is adopted, any space inside the electro-desalting dehydrator can be filled with controlled electric field strength meeting the requirement and the electro-desalting dehydration efficiency can be greatly improved.
Description
Technical field
The present invention relates to wet oil desalting and dewatering technical field, relate in particular to a kind of crude oil electro-desalting dehydrator based on two single-phase rectifier powers.
Background technology
At present, two single-phase rectifier power AC and DC Double Electric crude oil electro-desalting dehydrators (that is: form two kinds of electric fields of AC and DC with its unique AC and DC electric field electrode net distributed architecture feature in same electric desalting and dewatering device simultaneously, its self-cleaning oil quality of DC electric field is high, alternating-electric field is limpid compared with DC electric field dehydration, both combine performance advantage separately), at home and abroad Petroleum and Petrochemical Industry obtains extremely widespread use, in conventional crude electrodesalting and electrodehydrating process, bring into play extremely important effect.But, industry spot application shows, the AC and DC electric field power savings of this structure is remarkable, but, for extraordinary crude oil (as: highly aqueous, ageing oil, mink cell focus and high viscosity oil etc.), its desalting and dewatering poor effect, that is: to deviate from water oil length high for crude oil, and after desalting and dewatering, crude oil water content is high.In addition, for reducing the crude oil water content after desalting and dewatering, field operator strengthens electric field, but cause the alternating-electric field between positive electricity polar net and ground excessively strong, electric current is excessive, easily occurs exchanging a series of faults such as " electric fields ", after long-play, often there is a certain electrode network and damage phenomenon, make the crude oil water content after desalting and dewatering still be difficult to meet water content requirement and DC electric field is still very weak.Thereby this AC and DC Double Electric crude oil electro-desalting dehydrator cannot use even inactive at Oil Field.
U.S.'s patent of invention (patent No. 3773180) and document (Zhang Hongren, crude oil dehydration, petroleum industry press, 1990) AC and DC Double Electric crude oil electro-desalting dehydrator power supply architecture and principle have been provided as shown in Fig. 1 (a), wherein, 1 one step-up transformers; 2 one high-voltage rectifiers; 3 one positive electricity polar nets; 4 one negative electricity polar nets; 5 one DC electric field; 6 one positive and negative electrode nets form alternating-electric field over the ground; 7 one wet oils; 8 one crude oil are deviate from current direction; 9 one low wet oils enter electric field; 10 1 cleaned crude oils; 11 1 oily water terminations; 12 1 water bodys; 13 1 deviate from current direction.High-voltage rectifier 2 is made up of two diodes, and Opposite direction connection is done and be connected to one end of step-up transformer 1 in one end of two diodes, and the other end of two diodes is received respectively positive electricity polar net 3 and negative electricity polar net 4.This power supply is supplied with the single-phase half-wave DC electricity of electrical dehydrator.Because electric field 5 directions between positive and negative two arrays of electrodes net are constant all the time, therefore be called DC electric field; And electric field 6 directions that form respectively between positive and negative two arrays of electrodes net and an oily water termination are contrary, be equivalent to an alternating electric field.So the electric field that claims this form is the double electric field of AC and DC.Wet oil 7 self-electrode side off the net 6 places enter, and first stand alternating-electric field processing, and after deviating from part water 8, low wet oil 9 enters electric field 5, through further processing after purification crude oil 10 effusion electric desalting and dewatering devices.The vertical electrode net industry spot electrode network distribution scheme of crude oil electro-desalting dehydrator internal electrical polar net as shown in Fig. 1 (e), wherein, 17 1 power line directions; The coalescent direction of the globule in 18 1 emulsified crude oils." positive electricity polar net-negative electricity polar net-positive electricity polar net-negative electricity polar net-...-positive electricity polar net-negative electricity polar net " the electrode network distribution scheme of no ground electrode network, in like manner, also can provide horizontal electrode net distribution scheme.
Applicant finds above-mentioned phenomenal research:
The first, for not thering is the crude oil emulsion of capacitive, its electric field distribution as shown in Fig. 1 (b), wherein, 14 1 positive and negative electrode net voltage peaks; 15 1 positive and negative electrode net voltage drop curve line directions.Voltage rising between positive electricity polar net, negative electricity polar net and ground and downcurve are as shown in 14 and 15 of Fig. 1 (b), axis of abscissa represents ground potential, positive half cycle curve represents positive electricity polar net voltage to ground, negative half period curve represents negative electricity polar net voltage to ground, between positive electricity polar net and negative electricity polar net, there is no voltage, therefore,, for the electrode network of Fig. 1 (e) arranged distribution, electric field 5 can not be set up between positive and negative electrode net.Here it is, and AC and DC Double Electric crude oil electro-desalting dehydrator can not play the reason of electrodesalting and electrodehydrating effect for the high crude oil of water content.
The second, for thering is the crude oil emulsion of capacitive, the voltage curve between positive electricity polar net, negative electricity polar net and ground as shown in Fig. 1 (c), wherein, 16 1 positive and negative electrode net voltage time delay downcurves.Axis of abscissa represents ground potential, and positive half cycle curve 14 and curve 16 represent positive electricity polar net voltage to ground, and negative half period curve 14 and curve 16 represent negative electricity polar net voltage to ground.Dash area as shown in Fig. 1 (d) represents the voltage curve between positive electricity polar net and negative electricity polar net.For positive electricity polar net, the numerical values recited of voltage is divided two stages, and the first stage, the numerical value of voltage depends on the discharge scenario of electric capacity, and electric capacity is larger, and voltage can be higher; Subordinate phase, electric capacity enters negative charging, and the numerical value of voltage depends on the position strength of electric field of electrode network, and volts DS is passive and passive.Negative electricity polar net curve has the character identical with positive electricity polar net curve.
The 3rd, between electrode network, electric field controllability is poor.For the electrode network arranged distribution shown in Fig. 1 (e) and Fig. 1 (f), because two arrays of electrodes net does not form loop, volts DS on every group of electrode is only 45% of voltage of alternating current, the very weak strength of electric field that does not reach desalting and dewatering of DC electric field between positive electricity polar net and negative electricity polar net does not even work, and what really play desalting and dewatering effect is alternating-electric field.In order to improve the DC electric field between positive electricity polar net and negative electricity polar net, document (Yu great Min, to the Views of " two electric field " crude oil electric dewatering, oilfield surface engineering (OSE), 1987,6 (2): 14-17) propose to improve DC electric field intensity by the method that increases electric capacity, but, due to the DC electric field between positive electricity polar net and negative electricity polar net be between positive and negative electrode net electrical capacity and electrode network in locus impact and also be passive passive, the method for this increase electric capacity is very limited.Therefore, the extraordinary dehydrating of crude oil technology of existing Double Electric is difficult to obtain the effect of expecting.
Summary of the invention
The embodiment of the present invention provides a kind of crude oil electro-desalting dehydrator based on two single-phase rectifier powers, to improve electrodesalting and electrodehydrating efficiency.
In order to achieve the above object, the embodiment of the present invention provides a kind of crude oil electro-desalting dehydrator based on two single-phase rectifier powers, described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net has ground-electrode net between the above-mentioned electrode network of described crude oil electro-desalting dehydrator.
Preferably, in an embodiment of the present invention, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, there is ground-electrode net, can comprise: between the positive electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net.
Further, preferably, in an embodiment of the present invention, the ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Further, preferably, in an embodiment of the present invention, the ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Preferably, in an embodiment of the present invention, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, there is ground-electrode net, can comprise: between the positive electricity polar net of described crude oil electro-desalting dehydrator and positive electricity polar net, there is ground-electrode net.
Further, preferably, in an embodiment of the present invention, the ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Further, preferably, in an embodiment of the present invention, the ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Preferably, in an embodiment of the present invention, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, there is ground-electrode net, can comprise: between the negative electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net.
Further, preferably, in an embodiment of the present invention, the ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.
Further, preferably, in an embodiment of the present invention, the ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.
Technique scheme has following beneficial effect: adopt at the positive electricity polar net of crude oil electro-desalting dehydrator or/and be provided with the technique means of ground-electrode net between negative electricity polar net electrode network, this AC and DC Double Electric electrode network arranged distribution method with ground-electrode net, can all be full of the controllable electric field intensity meeting the demands in any space of whole desalting and dewatering device inside, can increase substantially electrodesalting and electrodehydrating efficiency.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 (a) is the two single-phase rectifier power desalting and dewatering technological principle schematic diagram of prior art;
Fig. 1 (b) is the crude oil emulsion desalting and dewatering electric field that prior art does not have capacitive;
Fig. 1 (c) is prior art positive and negative electrode net voltage to ground oscillogram;
Fig. 1 (d) is voltage oscillogram between prior art positive and negative electrode net;
Fig. 1 (e) is prior art water droplets coalescence flow graph;
Fig. 1 (f) is prior art electric desalting and dewatering device structural representation;
Fig. 2 (a) be AC and DC Double Electric crude oil electro-desalting dehydrator electrode network of the present invention by " just-ground-negative-ground-...-just " arranged distribution pattern;
Fig. 2 (b) be AC and DC Double Electric crude oil electro-desalting dehydrator electrode network of the present invention by " just-ground-just-ground-...-just " arranged distribution pattern;
Fig. 2 (c) be AC and DC Double Electric crude oil electro-desalting dehydrator electrode network of the present invention by " negative-ground-negative-ground-...-negative " arranged distribution pattern.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
For overcoming the shortcoming a little less than two single-phase rectifier power desalting and dewatering device prior art DC electric field, improve AC and DC Double Electric crude oil electric desalting dewatering effect, the present invention proposes to have the AC and DC Double Electric electrode network arranged distribution method of ground-electrode net, like this, any space in whole desalting and dewatering device inside is all full of the controllable electric field intensity meeting the demands, and can increase substantially electrodesalting and electrodehydrating efficiency.
For this reason, the embodiment of the present invention provides a kind of crude oil electro-desalting dehydrator based on two single-phase rectifier powers, to improve electrodesalting and electrodehydrating efficiency.Described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net has ground-electrode net between the above-mentioned electrode network of described crude oil electro-desalting dehydrator.
The AC and DC Double Electric electrode network arranged distribution with ground-electrode net that the embodiment of the present invention proposes has a variety of methods, here provide following three kinds of electrode network arranged distribution patterns, three kinds of patterns can be combined into more complicated integrated mode thus, it should be noted that, the positive electricity polar net of these three kinds of patterns is or/and all have ground-electrode net between negative electricity polar net, in addition, it should be noted that, positive electricity polar net or/and between negative electricity polar net and the pattern not exclusively with ground-electrode net also can realize, the embodiment of the present invention as long as can improve electrodesalting and electrodehydrating efficiency at the existing positive electricity polar net of the existing crude oil electro-desalting dehydrator based on two single-phase rectifier powers or/and be provided with ground-electrode net between negative electricity polar net, only, the positive electricity polar net of following three kinds of patterns is or/and all have ground-electrode net between negative electricity polar net, all be full of the controllable electric field intensity meeting the demands in any space of whole crude oil electro-desalting dehydrator inside, comparatively speaking, more can increase substantially electrodesalting and electrodehydrating efficiency.
Preferably, in an embodiment of the present invention, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, there is ground-electrode net, can comprise: between the positive electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net.
Further, preferably, in an embodiment of the present invention, the ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Further, preferably, in an embodiment of the present invention, the ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Fig. 2 (a) for AC and DC Double Electric crude oil electro-desalting dehydrator electrode network of the present invention by " just-ground-negative-ground-...-just " arranged distribution pattern, that is: vertical direction electrode network put in order for: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.Putting in order of horizontal direction electrode network is similar, no longer draws to describe to repeat.This AC and DC Double Electric electrode network arranged distribution method with ground-electrode net, can all be full of the controllable electric field intensity meeting the demands in any space of whole desalting and dewatering device inside, can increase substantially electrodesalting and electrodehydrating efficiency.
Preferably, in an embodiment of the present invention, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, there is ground-electrode net, can comprise: between the positive electricity polar net of described crude oil electro-desalting dehydrator and positive electricity polar net, there is ground-electrode net.
Further, preferably, in an embodiment of the present invention, the ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Further, preferably, in an embodiment of the present invention, the ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
Fig. 2 (b) for AC and DC Double Electric crude oil electro-desalting dehydrator electrode network of the present invention by " just-ground-just-ground-...-just " arranged distribution pattern, that is: vertical direction electrode network put in order for: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.Putting in order of horizontal direction electrode network is similar, no longer draws to describe to repeat.This AC and DC Double Electric electrode network arranged distribution method with ground-electrode net, can all be full of the controllable electric field intensity meeting the demands in any space of whole desalting and dewatering device inside, can increase substantially electrodesalting and electrodehydrating efficiency.
Preferably, in an embodiment of the present invention, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, there is ground-electrode net, can comprise: between the negative electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net.
Further, preferably, in an embodiment of the present invention, the ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.
Further, preferably, in an embodiment of the present invention, the ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.
Fig. 2 (c) for AC and DC Double Electric crude oil electro-desalting dehydrator electrode network of the present invention by " negative-ground-negative-ground-...-negative " arranged distribution pattern, that is: vertical direction electrode network put in order for: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.Putting in order of horizontal direction electrode network is similar, no longer draws to describe to repeat.This AC and DC Double Electric electrode network arranged distribution method with ground-electrode net, can all be full of the controllable electric field intensity meeting the demands in any space of whole desalting and dewatering device inside, can increase substantially electrodesalting and electrodehydrating efficiency.
Technique scheme has following beneficial effect: adopt at the positive electricity polar net of crude oil electro-desalting dehydrator or/and be provided with the technique means of ground-electrode net between negative electricity polar net electrode network, this AC and DC Double Electric electrode network arranged distribution method with ground-electrode net, can all be full of the controllable electric field intensity meeting the demands in any space of whole desalting and dewatering device inside, can increase substantially electrodesalting and electrodehydrating efficiency.Compared with prior art, the feature of AC and DC Double Electric electrode network location mode of the present invention: 1, add ground-electrode net between just negative, positive positive and negative negative electricity polar net, it is active controlled making the electric field between electrode network.2, be all full of in any space of whole desalting and dewatering device inside the controllable electric field intensity meeting the demands.3, active electrode can increase substantially electrodesalting and electrodehydrating efficiency.
Method described in the embodiment of the present invention or the step of algorithm can directly embed hardware, the software module of treater execution or the two combination.Software module can be stored in the storage medium of other arbitrary form in RAM storer, flash memory, ROM storer, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with treater, with make treater can be from storage medium reading information, and can deposit write information to storage medium.Alternatively, storage medium can also be integrated in treater.Treater and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, treater and storage medium also can be arranged in the different parts in user terminal.
The present invention obtains Beijing City Education Commission and builds together that project is special subsidizes.The present invention obtains national high-tech research evolutionary operation(EVOP) (863 Program) support, project name: high-efficient energy-saving environment friendly crude oil Chaotic-Pulse electrical dehydrator industrialization gordian technique research (item number: 2007AA05Z230).
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. the crude oil electro-desalting dehydrator based on two single-phase rectifier powers, described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net is characterized in that, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, has ground-electrode net; Wherein, between the positive electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net; The ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
2. the crude oil electro-desalting dehydrator based on two single-phase rectifier powers, described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net is characterized in that, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, has ground-electrode net; Wherein, between the positive electricity polar net of described crude oil electro-desalting dehydrator and positive electricity polar net, there is ground-electrode net; The ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
3. the crude oil electro-desalting dehydrator based on two single-phase rectifier powers, described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net is characterized in that, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, has ground-electrode net; Wherein, between the positive electricity polar net of described crude oil electro-desalting dehydrator and positive electricity polar net, there is ground-electrode net; The ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-positive electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-positive electricity polar net-ground-electrode net-... the large tank shell of-positive electricity polar net-crude oil electro-desalting dehydrator.
4. the crude oil electro-desalting dehydrator based on two single-phase rectifier powers, described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net is characterized in that, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, has ground-electrode net; Wherein, between the negative electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net; The ordering of the vertical direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.
5. the crude oil electro-desalting dehydrator based on two single-phase rectifier powers, described crude oil electro-desalting dehydrator has positive electricity polar net or/and negative electricity polar net is characterized in that, between the above-mentioned electrode network of described crude oil electro-desalting dehydrator, has ground-electrode net; Wherein, between the negative electricity polar net of described crude oil electro-desalting dehydrator and negative electricity polar net, there is ground-electrode net; The ordering of the horizontal direction electrode network of described crude oil electro-desalting dehydrator is: the large tank shell-negative electricity of crude oil electro-desalting dehydrator polar net-ground-electrode net-negative electricity polar net-ground-electrode net-... the large tank shell of-negative electricity polar net-crude oil electro-desalting dehydrator.
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| CN103773428B (en) * | 2012-10-26 | 2016-03-30 | 中国石油化工股份有限公司 | A kind of high efficiency electrical desalting and dehydration equipment and application |
| CN111773769B (en) * | 2020-07-09 | 2021-10-01 | 重庆工商大学 | Waste oil emulsion chaotic frequency pulse electric field demulsification method and system |
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| US4702815A (en) * | 1986-05-05 | 1987-10-27 | National Tank Company | Distributed charge composition electrodes and desalting system |
| CN1140611C (en) * | 2000-08-18 | 2004-03-03 | 中国石化集团洛阳石油化工工程公司 | Electric dewatering and desalting appliance |
| CN1171975C (en) * | 2001-05-25 | 2004-10-20 | 中国石化胜利油田有限公司规划设计研究院 | Highfrequency pulse raw oil electric dewatering device |
| CN1209444C (en) * | 2003-03-10 | 2005-07-06 | 朱绪荣 | High-efficient electric desalting apparatus |
| CN2813618Y (en) * | 2005-07-07 | 2006-09-06 | 镇江金门实业有限公司 | High-speed electrostatic desalting and dewatering equipment for crude oil |
| CN100366707C (en) * | 2006-07-07 | 2008-02-06 | 中国石油化工集团公司 | Electric desalting and dewatering device |
| CN100554382C (en) * | 2007-04-26 | 2009-10-28 | 北京科技大学 | A kind of electric desalting/dewatering device with efficient combined electrode |
| CN201245619Y (en) * | 2007-09-27 | 2009-05-27 | 江苏三星化工有限公司 | Variable frequency pulse crude oil electric desalting and electric dehydration apparatus |
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