CN104807981B - Crude oil emulsion dynamic breaking emulsion and dewatering apparatus for evaluating characteristics and evaluation method - Google Patents
Crude oil emulsion dynamic breaking emulsion and dewatering apparatus for evaluating characteristics and evaluation method Download PDFInfo
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Abstract
The invention discloses a kind of crude oil emulsion dynamic breaking emulsion and dewatering apparatus for evaluating characteristics and evaluation method, including emulsion gravitation tank, electric heating equipment, high speed shear dispersion machine, emulsion measuring pump, thermometer, breakdown of emulsion box, emulsion recycling can, demulsifier gravitation tank, dosing pump, high voltage power supply, oscillograph；Emulsion gravitation tank and emulsion recycling can are connected with the entrance of emulsion measuring pump by triple valve, and the outlet connection breakdown of emulsion box entrance of emulsion measuring pump, the outlet of breakdown of emulsion box are connected with emulsion gravitation tank and emulsion recycling can by triple valve；Front sample tap and rear sample tap are respectively equipped with the entrance pipe and export pipeline of breakdown of emulsion box, high voltage power supply, oscillograph are sequentially connected, are that breakdown of emulsion box applies high voltage electric field, breakdown of emulsion box is provided with demulsifier gravitation tank and dosing pump on the entrance pipe before front sample tap.Compact conformation, crude oil emulsion consumption be few and continuous flowing, breakdown of emulsion box shell material is transparent is easy to observation, can be indoor in experiment or engineering site make Fast Evaluation to the dynamic breaking emulsion and dewatering characteristic of crude oil emulsion.
Description
Technical field
The present invention relates to a kind of crude oil emulsion dynamic breaking emulsion and dewatering characteristic test technology, more particularly to a kind of emulsification of crude oil
State of surging breaking emulsion and dewatering apparatus for evaluating characteristics and evaluation method.
Background technology
Water is almost " like the shadow following the person " during oil extraction, as in world wide, each oil field steps into exploitation
Middle and later periods and intensified oil reduction (EOR) technology are widely used, and the moisture content in oil well produced liquid rises year by year, emulsify degree day
Become serious, not only the situation that crude oil emulsion of the moisture content higher than 15% enters electric dehydrator, and electric dehydrator often occurs in Jing
The factors such as the thickness of middle emulsion layer increases, emulsion stability enhancing cause original electric dehydrator to be difficult to tackle, and frequently go out
Existing " collapse electric field " or even " climbing electricity " phenomenon, it is difficult to by the moisture control of electric dehydrator oil-out crude oil below 0.5%, be this
Each oil field is in the method for actively finding reply.At the same time, domestic and international researcher is taken off for the breakdown of emulsion of w/o type emulsion
Water characteristic has carried out extensive application basic research, wherein the research for not same electric field designing technique is directed generally to inquire into different
Electric field form (uniform electric field, non-uniform electric field, DC impulse electric fields, AC impulse electric fields, AC/DC dual fields etc.), not same electric field ginseng
(electric field waveform, electric-field intensity, electric field frequency, electric field duty cycles etc.) are counted to electric field breaking emulsion and dewatering performance, the impact of power consumption,
Research wherein to different electric pulse field parameters finds：Electric field waveform has a great impact to crude oil electrostatic coalescence effect；Electric-field intensity
Critical value, lower critical value in presence, have preferable electrostatic coalescence breaking emulsion and dewatering effect when electric-field intensity is located in the interval；
There is optimal value in electric field frequency, when electric field frequency is located near optimal frequency, the stability of emulsification of crude oil liquid system is worst, former
Oily breaking emulsion and dewatering efficiency highest；Dutycycle not only affects breaking emulsion and dewatering effect, and also power consumption is had a great impact.Certainly,
Research for different chemical demulsifiers is then directed generally to inquire into demulsifier species, concentration to demulsifier dewatering, dehydration
The impact of water quality.
To obtain optimum electric pulse field parameter or demulsifier species and its addition corresponding to different crude oils emulsion breaking emulsion and dewatering
Dosage, it is desirable to have pointedly carry out lot of experiments, but the technological parameter of each Oil Field actual production system both at home and abroad
Adjust excursion limited, it is difficult to complete evaluation is made to optimized parameter, the restriction of laboratory internal cause each side condition, operating mode bar
Part is very different again with live reality, therefore conclusion often differs greatly with actual conditions.
Liaohe Petroleum Exploration Bureau's Li Jia rising suns et al. mention a kind of crude oil dehydration dynamic analog in patent CN200964398Y
Device, the device propose " dynamic " this concept, and can be for when outer output oil additive amount of medicament, operating temperature, dehydration
Between three parameters carry out evaluation experimental, but the device can only provide 220V constant voltage sources, not relate to different electric pulse field parameters
Evaluation to breaking emulsion and dewatering performance.
The refined sweet smell of the high-new energy development Co., Ltd. Zhang in Shaanxi mentions a kind of electric dehydration experiment in patent CN103555360A
System, the system include high frequency pulse power supply, emulsifying tank, micro-lens, are provided with copper plate electrode in the emulsifying tank for see rank that is situated between, should
Device is only capable of being observed the crude oil emulsion under electric field action by using microscope in a static condition, and function extremely has
Limit.
Harbin University of Science and Technology's Chen Guoqing et al. proposes a kind of crude oil dehydration dynamic in patent CN103059909A can
Depending on changing analogue means, and the method that crude oil is dehydrated is prepared using the device, the device is cut by high voltage power supply, die heater, emulsification
Cut blend tank, crude oil measurement pump, high pressure electric dehydrator, waste liquid tank, circulating pump etc. composition, can complete crude oil different temperatures,
Flow, electric field treatment time, battery lead plate spacing, the dynamic dehydration characteristic evaluation experimental under the conditions of electric pulse field parameter, while breakdown of emulsion box
On be provided with visual windows, can be with real-time monitoring oil-water interfaces layer situation of change.But device still suffers from many weak points：1. device
Volume is big, high-tension electricity evaporator structure is complicated, not only needs to consume substantial amounts of crude oil emulsion in running, and tests knot
After beam, the timely cleaning problem of equipment is also difficult to effectively solving；2. the device electrode plate is bare metal material, and moisture content is too high
When " collapse electric field " phenomenon occurs, it is difficult to the breaking emulsion and dewatering characteristic to different electric pulse field parameters under high-moisture percentage is made and effectively being commented
Valency；3. on to breaking emulsion and dewatering effect assessment mode, the device only by using moisture content on-line computing model to upper strata crude oil, under
Layer sewage is monitored, when crude oil layer moisture content<0.5%th, water layer moisture content>Carry out oil extraction, draining when 99.5% respectively, while
Oil reservoir is observed by visual windows, is only capable of from macroscopic perspective evaluating electric dehydration performance, it is impossible to accurately sample table
Levy impact of the electric field to emulsion physicochemical property.In sum it is difficult to the equipment is used for non-industrial enterprise subordinate tests indoor
Applied basic research.
Sinopec refinery Engineering stock Co., Ltd Cao's development et al. proposes one kind in CN203768310U can apparent motion
State electric dehydration analogue means, the transposition is by heating crude oil tank, water injection tank, mixing heating tank, high voltage power supply, plunger metering pump
Constitute with recycling can, its electric dehydration can body part is made up of glass, can realize the Real Time Observation to crude oil emulsion in tank,
But there is problems with：1. bare metal electrode cannot implement electric field breakdown of emulsion to high-moisture percentage crude oil emulsion；2. except to tank
Interior crude oil emulsion electric field breaking emulsion and dewatering situation does not have remaining evaluation means outside being observed, and conclusion is theoretically unsound；
3. device volume is excessive, and more crude oil emulsion will certainly be consumed in running, it is difficult to test in non-industrial enterprise subordinate
Applied interior.
The JDYZ-1 types dynamic electro-desalting test sold to each oil field, oil plant at present by analytical instrument factory of Taizhou Jiangyan City
Device, including the warning of oil-water mixer, electric dehydrator, nitrogen pressure supplement system, oil-water interfaces automatic control system, over-temp and over-pressure
System etc., the device characteristic are, equipped with computer control system, can to pass through computer to the items ginseng in experimentation
Number carries out real-time monitoring and control, and automaticity is higher.But the experimental provision is deposited also in many weak points：1. electric dehydrator
Using stainless steel, in running, real-time monitored cannot be carried out to the flow regime of wherein emulsion；2. battery lead plate is adopted
Bare metal material, can occur " collapse electric field " phenomenon, it is impossible to probe into different electric pulse field parameters when crude oil emulsion moisture content is too high
Dehydration characteristic under high-moisture percentage；3. substantial oil emulsion is consumed in running, in Laboratory Crude Oil limited sample
In the case of be difficult carry out the deep experimental study of system；4. the device design is complicated, pipeline pole when emulsification of crude oil fluid viscosity is too high
Easily block, experiment terminates the cleaning problem of rear equipment and is also difficult to solve.
In sum, crude oil emulsion of the prior art static state breaking emulsion and dewatering experimental result differ with engineering site compared with
Greatly；Existing commercial dynamic (electric field) breaking emulsion and dewatering evaluation experimental device size is larger, and crude oil emulsion consumes many, and equipment is clear
Washing maintenance wastes time and energy；And the pole plate of existing commercial dynamic (electric field) breaking emulsion and dewatering evaluation experimental device is bare metal,
High water cut emulsion cannot be adapted to.
The content of the invention
It is an object of the invention to provide one kind can to different crude oils emulsion different electric pulse field parameters/demulsifier species/
It is special that dynamic breaking emulsion and dewatering characteristic under breakdown of emulsion agent dose makes the crude oil emulsion dynamic breaking emulsion and dewatering rapidly and effectively evaluated
Property evaluating apparatus and evaluation method.
The purpose of the present invention is achieved through the following technical solutions：
The crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device of the present invention, including emulsion gravitation tank, electricity plus
Hot equipment, high speed shear dispersion machine, emulsion measuring pump, thermometer, breakdown of emulsion box, emulsion recycling can, demulsifier gravitation tank, plus
Teat pipette, high voltage power supply, oscillograph；
The emulsion gravitation tank and emulsion recycling can are connected with the entrance of the emulsion measuring pump by triple valve
Connect, the outlet connection breakdown of emulsion box entrance of the emulsion measuring pump, the outlet of breakdown of emulsion box is by triple valve and the emulsion feed
Tank is connected with emulsion recycling can；
Front sample tap and rear sample tap, the demulsifier are respectively equipped with the entrance pipe and export pipeline of the breakdown of emulsion box
Gravitation tank is connected with the entrance of the dosing pump, and the outlet of the dosing pump passes through gate valve with the breakdown of emulsion box in the front sampling
Entrance pipe connection before mouthful.
The crude oil emulsion dynamic breaking emulsion and dewatering apparatus for evaluating characteristics that the application of the present invention is above-mentioned realizes that emulsification of crude oil surges
The evaluation method of state breaking emulsion and dewatering characteristic, including step：
A, proportionally crude oil, water, emulsifying agent are put in emulsion gravitation tank, tie up mixed liquor by electric heating equipment
Hold after design temperature, shear agitation is carried out to mixed liquor using high speed shear dispersion machine, to make different degrees of stability
Crude oil emulsion；
After the completion of B, crude oil emulsion are prepared, open emulsion measuring pump and crude oil emulsion is pumped into brokenly with the flow velocity for setting
Newborn box, after crude oil emulsion is in steady flow in Fast Evaluation device, by regulating three-way valve, by the original through electric field action
Oil emulsion is squeezed in emulsion recycling can, subsequently opens high voltage power supply, oscillograph successively, is that breakdown of emulsion box applies high voltage electric field,
To carry out electric field breaking emulsion and dewatering to flowing crude oil emulsion therein；
C, after front sample tap takes a small amount of crude oil emulsion sample, according to corresponding hydraulic detention time different in flow rate,
Take the crude oil emulsion sample after a small amount of breakdown of emulsion after a certain interval at rear sample tap；
D, with reference to front sample tap, rear sample tap samples taken, by measuring instrument to dispersion phase water in crude oil emulsion
Grain particle diameter, emulsion stability etc. are analyzed sign, evaluate the effect of crude oil emulsion electric field breaking emulsion and dewatering from quantitative angle
Really；Centrifugal treating can also be carried out to crude oil emulsion sample by centrifugal separator, the dehydration after contrasting centrifugation
Measure to evaluate breaking emulsion and dewatering effect；
After E, experiment terminate, first the crude oil emulsion in device is emptied, poured in emulsion gravitation tank appropriate clear
Lotion, opens emulsion measuring pump, by triple valve before and after regulation breakdown of emulsion box so as in emulsion gravitation tank, breakdown of emulsion box, emulsification
Liquid recycling can interior circulation back and forth flows, and is rapidly completed the cleaning of device.
As seen from the above technical solution provided by the invention, crude oil emulsion dynamic provided in an embodiment of the present invention is broken
Newborn dehydration characteristic evaluating apparatus and evaluation method, for joining in identical or different electric field for identical or different crude oil emulsion
Dynamic breaking emulsion and dewatering characteristic under number/demulsifier species/demulsifier concentration makes Fast Evaluation, and the evaluating apparatus have structure tight
Gather, few crude oil emulsion consumption and continuous flowing, breakdown of emulsion box shell material is transparent the advantages of be easy to observation, not only can be in experiment
The indoor dynamic breaking emulsion and dewatering characteristic to crude oil emulsion makes Fast Evaluation, while portable set can also be made, is work
Journey scene provides effective testing service.
Description of the drawings
Fig. 1 is that the flow process of crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is the main cross section structure diagram of breakdown of emulsion box (8) in the embodiment of the present invention；
Sectional views of the Fig. 3 for the line A-A of Fig. 2.
In figure, each mark is as follows：
1- emulsion feeder sleeves, 2- electric heating equipments, 3- high speed shear dispersion machines, 4- triple valves, 5- emulsion measuring pumps,
Before 6- thermometers, 7-, after sample tap, 8- breakdown of emulsion boxes, 9- breakdown of emulsion box low-pressure ends, 10-, sample tap, 11- triple valves, 12- emulsions are returned
Closed cans, 13- high voltage power supplies, 14- breakdown of emulsion box high-pressure sides, 15- voltage test signals, 16- current test signals, 17- oscillographs,
End cap, 22- low pressure electrode plate insulation materials, 23- low-field electrodes on the left of 18- demulsifier gravitation tanks, 19- dosing pumps, 20- gate valves, 21-
Plate, 24- breakdown of emulsion box entrances, 25- breakdown of emulsion box housings, 26- seal washers, 27- electrode plate with high voltage, 28- high-pressure polar plate insulating materials,
End cap, the outlet of 30- breakdowns of emulsion box, 31- rectangle tortuous flow paths on the right side of 29-.
Specific embodiment
The embodiment of the present invention will be described in further detail below.
The crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device of the present invention, its preferably specific embodiment
It is：
Including emulsion gravitation tank 1, electric heating equipment 2, high speed shear dispersion machine 3, emulsion measuring pump 5, thermometer 6,
Breakdown of emulsion box 8, emulsion recycling can 12, demulsifier gravitation tank 18, dosing pump 19, high voltage power supply (13), oscillograph (17)；
The emulsion gravitation tank 1 and emulsion recycling can 12 pass through the entrance of triple valve 4 and the emulsion measuring pump 5
Be connected, the outlet of the emulsion measuring pump 5 connection breakdown of emulsion box entrance 24, breakdown of emulsion box outlet 30 by triple valve 11 with it is described
Emulsion gravitation tank 1 is connected with emulsion recycling can 12；
Front sample tap 7 and rear sample tap 10 are respectively equipped with the entrance pipe and export pipeline of the breakdown of emulsion box 8, it is described broken
Emulsion gravitation tank 18 is connected with the entrance of the dosing pump 19, and the outlet of the dosing pump 19 passes through gate valve 20 and the breakdown of emulsion box
The 8 entrance pipe connections before the front sample tap 7.
The high voltage power supply (13) is connected with each other with oscillograph (17), the high voltage power supply 13 and the breakdown of emulsion box high-pressure side
14 are connected.
The electric heating equipment 2, the export pipeline of the emulsion gravitation tank 1 are installed in the emulsion gravitation tank 1
The thermometer 6 is provided with, heat tracing equipment is installed on the export pipeline of the emulsion gravitation tank 1.
The breakdown of emulsion box 8 includes breakdown of emulsion box housing 25, left side end cap 21 and right side end cap 29, the left side end cap 21, the right side
It is bolted between side end cap 29 and breakdown of emulsion box housing 25, and is provided with seal washer 26, the left side end cap 21 and right side
Low tension pole plate 23 and electrode plate with high voltage 27, the bottom of the breakdown of emulsion box housing 25 and top difference are respectively fixed with end cap 29
It is provided with breakdown of emulsion box entrance 24 and breakdown of emulsion box outlet 30.
The surface of the electrode plate with high voltage 27 and low tension pole plate 23 has been covered each by insulating barrier 28,22, and using insulation
The electrode plate with high voltage 27 and low tension pole plate 23 are cast into one with the right side end cap 29, left side end cap 21 by material respectively
Overall, the electrode plate with high voltage 27, low tension pole plate 23 are respectively by breakdown of emulsion box high-pressure side 14, breakdown of emulsion box low-pressure end 9 and the external world
It is connected, and, the electrode plate with high voltage 27, low tension pole plate 23 surround rectangle tortuous flow path 31 jointly with breakdown of emulsion box housing 25.
The emulsion gravitation tank 1, emulsion recycling can 12 and breakdown of emulsion box housing 25 are transparent material.
Whole evaluating apparatus are the portable skid structure being placed in box-type shell, and are provided with display touch-screen.
The crude oil emulsion dynamic breaking emulsion and dewatering apparatus for evaluating characteristics that the application of the present invention is above-mentioned realizes that emulsification of crude oil surges
The evaluation method of state breaking emulsion and dewatering characteristic, its preferably specific embodiment is：
Including step：
A, proportionally crude oil, water, emulsifying agent are put in emulsion gravitation tank 1, mixed liquor is made by electric heating equipment 2
After maintaining design temperature, shear agitation is carried out to mixed liquor using high speed shear dispersion machine 3, to make different degrees of stability
Crude oil emulsion；
After the completion of B, crude oil emulsion are prepared, crude oil emulsion is pumped into by the flow velocity for opening emulsion measuring pump 5 to set
Breakdown of emulsion box 8, after crude oil emulsion is in steady flow in Fast Evaluation device, by regulating three-way valve 11, will make through electric field
Crude oil emulsion is squeezed in emulsion recycling can 12, is subsequently opened high voltage power supply 13, oscillograph 17 successively, is breakdown of emulsion box 8
Apply high voltage electric field, electric field breaking emulsion and dewatering to be carried out to flowing crude oil emulsion therein；
C, after front sample tap 7 takes a small amount of crude oil emulsion sample, according to corresponding hydraulic detention time different in flow rate,
Take the crude oil emulsion sample after a small amount of breakdown of emulsion after a certain interval at rear sample tap 10；
D, with reference to front sample tap 7,10 samples taken of rear sample tap, by measuring instrument to dispersion phase water in crude oil emulsion
Grain diameter, emulsion stability etc. are analyzed sign, evaluate crude oil emulsion electric field breaking emulsion and dewatering from quantitative angle
Effect；Centrifugal treating can also be carried out to crude oil emulsion sample by centrifugal separator, it is de- after contrasting centrifugation
The water yield is evaluating breaking emulsion and dewatering effect；
After E, experiment terminate, first the crude oil emulsion in device is emptied, poured in emulsion gravitation tank 1 appropriate clear
Lotion, opens emulsion measuring pump 5, by adjusting the triple valve 4,11 in front and back of breakdown of emulsion box 8 so as in emulsion gravitation tank 1, breakdown of emulsion
Box 8,12 interior circulation of emulsion recycling can back and forth flow, and are rapidly completed the cleaning of device.
In step B, after crude oil emulsion is in steady flow in Fast Evaluation device, in addition to using electric field breakdown of emulsion,
Can also be using demulsifier be injected on pipeline of the dosing pump 19 between front sample tap 7 and breakdown of emulsion box 8, can be with demulsifier list
Under only effect or " electric field+demulsifier " collective effect, Fast Evaluation is carried out to its breaking emulsion and dewatering characteristic；
Before and after in step C, sample tap sampling interval time should be corresponding with the emulsion electric field action time, by the greatest extent
Contrast may be measured causes experimental data more credible with a batch of crude oil emulsion；
During step D is to sample analysis sign, can dispersion phase particle water grain in independent measurement crude oil emulsion
The data such as footpath, emulsion stability, centrifugal dehydration rate, it is also possible to which several characterization methods are used in combination.
The crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device of the present invention and evaluation method, can be more complete
Face, science are testing indoor or engineering site to different crude oils emulsion in different electric pulse field parameters/demulsifier species/demulsifier agent
Dynamic breaking emulsion and dewatering characteristic under amount is made and rapidly and effectively being evaluated.
Corresponding Fast Evaluation device is produced through reality processing and is tested through laboratory test, show that the present invention has
Following advantage and effect：
1st, the emulsion in device is continuous flow regime, solves experiment in the past indoor using static demulsification and dehydration device
The larger problem of situation gap in the data that draw and engineering site.
2nd, due to during emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation plant running the w/o type emulsion volume that consumes compared with
Few (can as little as 2.5L) so that in dehydration characteristic sides of making such as the indoor electric field breakdown of emulsion to different emulsions of experiment, chemical demulsifications
Just, efficiently evaluate and be possibly realized, while the portable skid structure being placed in box-type shell can be made, so can not only
It is enough laboratory, and timely and effectively test evaluation service can be provided for engineering site.
3rd, due in breakdown of emulsion box board-like metal electrode sealing is poured using insulating materials all, compare traditional electric field dehydration evaluation
In device for the battery lead plate of bare metal material, be also not in that " collapse electric field " is existing when High water cut w/o type emulsion is processed
As.
4th, emulsion gravitation tank, emulsion recycling can, breakdown of emulsion box housing are made using transparent material, are easy to emulsion
Gravity Separation effect of settling after breakdown of emulsion carries out real-time visual observation.
5th, using emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device, in front and back's sample tap emulsion sample, lead to
Cross the measurement of its drop particle diameter, stability are characterized, centrifugal dehydration rate quantitative observation and to breakdown of emulsion box internal state real-time photography
The evaluation meanses such as record, can make science objective and comprehensively careful comment to crude oil emulsion dynamic breaking emulsion and dewatering performance
It is fixed.
Specific embodiment：
Embodiment one：
As shown in Figure 1, Figure 2, Figure 3 shows, present embodiment crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device bag
Include：Emulsion gravitation tank (1), electric heating equipment (2), high speed shear dispersion machine (3), emulsion measuring pump (5), thermometer (6),
Breakdown of emulsion box (8), emulsion recycling can (12), high voltage power supply (13), oscillograph (17), demulsifier gravitation tank (18), dosing pump
(19) composition such as.Emulsion gravitation tank (1), emulsion recycling can (12) are by triple valve (4) and emulsion measuring pump (5) entrance
It is connected, emulsion measuring pump (5) outlet connection breakdown of emulsion box entrance (24), breakdown of emulsion box export (30) by triple valve (11) and breast
Change liquid gravitation tank (1), emulsion recycling can (12) to be connected, high voltage power supply (13), oscillograph (17) are sequentially connected, its mesohigh
Power supply (13) is connected with breakdown of emulsion box high-pressure side (14) and can provide high voltage electric field for breakdown of emulsion box (8), at the same time demulsifier gravitation tank
(18) same to dosing pump (19) is connected, and injects demulsifier on pipeline that can be between front sample tap (7) and breakdown of emulsion box (8)；Breakdown of emulsion box
(8) it is main by left side end cap (21), right side end cap (29), low tension pole plate (23), electrode plate with high voltage (27), breakdown of emulsion box housing
(25) constitute, left side end cap (21), right side end cap (29) with being bolted between breakdown of emulsion box housing (25), while using close
Seal washer (26) prevents crude oil emulsion from leaking outside, and is provided with emulsion entrance (24) in the bottom of breakdown of emulsion box housing (25), in breakdown of emulsion
The top of box housing (25) is provided with emulsion outlet (30).
The present embodiment can adjust emulsification of crude oil liquid temp by using electric heating equipment (2) and thermometer (6)；Can
The crude oil emulsion that different water cut and different stability are required is prepared by using high shear dispersion machine (3)；Can be by changing
Become the output flow of emulsion measuring pump (5), adjust the time of staying of the emulsion in breakdown of emulsion box (8)；Can be high by adjusting
Voltage source (13) output signal, is that breakdown of emulsion box (8) provides different types of electric field environment；Can be different types of broken by adding
The demulsifier of emulsion or variable concentrations, probes into impact of the demulsifier to crude oil emulsion breaking emulsion and dewatering performance；The data obtained to for
Production run provides strong theoretical foundation.
Embodiment two：
Present embodiment from unlike embodiment one：Using crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation
The mode of device, comprises the following steps that：
1st, proportionally crude oil, water, emulsifying agent are put in emulsion gravitation tank (1), make to mix by electric heating equipment (2)
After conjunction liquid maintains design temperature, shear agitation is carried out to mixed liquor using high speed shear dispersion machine (3), is contained with making difference
The crude oil emulsion of water rate and different degrees of stability.
2nd, after the completion of crude oil emulsion is prepared, the flow for opening emulsion measuring pump (5) to set is by emulsification of crude oil liquid pump
Enter breakdown of emulsion box (8), after crude oil emulsion is in steady flow in Fast Evaluation device, by regulating three-way valve (11), will pass through
The crude oil emulsion of electric field action is returned in emulsion recycling can (12), subsequently opens high voltage power supply (13), oscillograph successively
(17) it is, that breakdown of emulsion box (8) applies high voltage electric field, to carry out breaking emulsion and dewatering to flowing crude oil emulsion therein.
3rd, after front sample tap (7) takes a small amount of crude oil emulsion sample, during according to corresponding hydraulic retention different in flow rate
Between, the crude oil emulsion sample after rear sample tap (10) place takes a small amount of breakdown of emulsion after a certain interval.
4th, with reference to front sample tap (7), rear sample tap (10) samples taken, by measuring instrument to disperseing in crude oil emulsion
Phase particle water particle diameter, emulsion stability etc. are analyzed sign, evaluate crude oil emulsion electric field breakdown of emulsion from quantitative angle and take off
The effect of water；Centrifugal treating can also be carried out to crude oil emulsion sample by centrifugal separator, after contrasting centrifugation
Dehydrating amount evaluating breaking emulsion and dewatering effect.
5th, after experiment terminates, first the crude oil emulsion in device is emptied, is poured in emulsion gravitation tank (1) appropriate
Cleaning agent, opens emulsion measuring pump (5), by adjusting breakdown of emulsion box (8) triple valve (4), (11) in front and back so as to supply in emulsion
Batch can (1), breakdown of emulsion box (8), emulsion recycling can (12) interior circulation back and forth flow, and are rapidly completed the cleaning of device.Other
It is identical with specific embodiment one.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (3)
1. a kind of crude oil emulsion dynamic breaking emulsion and dewatering characteristic Fast Evaluation device, it is characterised in that including emulsion gravitation tank
(1), electric heating equipment (2), high speed shear dispersion machine (3), emulsion measuring pump (5), thermometer (6), breakdown of emulsion box (8), emulsification
Liquid recycling can (12), demulsifier gravitation tank (18), dosing pump (19), high voltage power supply (13), oscillograph (17)；
The emulsion gravitation tank (1) and emulsion recycling can (12) are by triple valve (4) and the emulsion measuring pump (5)
Entrance is connected, and outlet connection breakdown of emulsion box entrance (24) of the emulsion measuring pump (5), breakdown of emulsion box export (30) by threeway
Valve (11) is connected with the emulsion gravitation tank (1) and emulsion recycling can (12)；
Front sample tap (7) and rear sample tap (10) are respectively equipped with the entrance pipe and export pipeline of the breakdown of emulsion box (8), it is described
Demulsifier gravitation tank (18) is connected with the entrance of the dosing pump (19), the outlet of the dosing pump (19) by gate valve (20) with
Entrance pipe connection of the breakdown of emulsion box (8) before the front sample tap (7)；
The high voltage power supply (13) is connected with each other with oscillograph (17), the high voltage power supply (13) and the breakdown of emulsion box high-pressure side
(14) it is connected；
The electric heating equipment (2), the outlet of the emulsion gravitation tank (1) are installed in the emulsion gravitation tank (1)
Road is provided with the thermometer (6), is provided with heat tracing equipment on the export pipeline of the emulsion gravitation tank (1)；
The breakdown of emulsion box (8) includes breakdown of emulsion box housing (25), left side end cap (21) and right side end cap (29), the left side end cap
(21), it is bolted between right side end cap (29) and breakdown of emulsion box housing (25), and is provided with seal washer (26), the left side
Low tension pole plate (23) and electrode plate with high voltage (27), the breakdown of emulsion box shell are respectively fixed with end cap (21) and right side end cap (29)
The bottom and top of body (25) is respectively equipped with breakdown of emulsion box entrance (24) and breakdown of emulsion box outlet (30)；
The surface of the electrode plate with high voltage (27) and low tension pole plate (23) has been covered each by insulating barrier (28,22), and using exhausted
Edge material is respectively by the electrode plate with high voltage (27) and low tension pole plate (23) and the right side end cap (29), left side end cap (21)
An entirety is cast into, the electrode plate with high voltage (27), low tension pole plate (23) pass through breakdown of emulsion box high-pressure side (14), breakdown of emulsion respectively
Box low-pressure end (9) is connected with the external world, and, the electrode plate with high voltage (27), low tension pole plate (23) are with breakdown of emulsion box housing (25) altogether
It is same to surround rectangle tortuous flow path (31)；
Whole evaluating apparatus are the portable skid structure being placed in box-type shell, and are provided with display touch-screen.
2. crude oil emulsion according to claim 1 dynamic breaking emulsion and dewatering characteristic Fast Evaluation device, it is characterised in that institute
State emulsion gravitation tank (1), emulsion recycling can (12) and breakdown of emulsion box housing (25) and be transparent material.
3. the crude oil emulsion dynamic breaking emulsion and dewatering apparatus for evaluating characteristics described in a kind of application claim 1 or 2 realizes crude oil breast
Change the evaluation method of state breaking emulsion and dewatering characteristic of surging, it is characterised in that including step：
A, proportionally crude oil, water, emulsifying agent are put in emulsion gravitation tank (1), mixed liquor is made by electric heating equipment (2)
After maintaining design temperature, shear agitation is carried out to mixed liquor using high speed shear dispersion machine (3), to make different stable journeys
The crude oil emulsion of degree；
After the completion of B, crude oil emulsion are prepared, crude oil emulsion is pumped into brokenly by the flow velocity for opening emulsion measuring pump (5) to set
Newborn box (8), after crude oil emulsion is in steady flow in Fast Evaluation device, by regulating three-way valve (11), will be through electric field
The crude oil emulsion of effect is squeezed in emulsion recycling can (12), is subsequently opened high voltage power supply (13), oscillograph (17) successively, is
Breakdown of emulsion box (8) applies high voltage electric field, to carry out electric field breaking emulsion and dewatering to flowing crude oil emulsion therein；
C, after front sample tap (7) takes a small amount of crude oil emulsion sample, according to corresponding hydraulic detention time different in flow rate,
Crude oil emulsion sample of the intervals after rear sample tap (10) place takes a small amount of breakdown of emulsion；
D, with reference to front sample tap (7), rear sample tap (10) samples taken, by measuring instrument to dispersion phase water in crude oil emulsion
Grain diameter, emulsion stability are analyzed sign, evaluate the effect of crude oil emulsion electric field breaking emulsion and dewatering from quantitative angle
Really；Centrifugal treating can also be carried out to crude oil emulsion sample by centrifugal separator, the dehydration after contrasting centrifugation
Measure to evaluate breaking emulsion and dewatering effect；
After E, experiment terminate, first the crude oil emulsion in device is emptied, pour appropriate cleaning in emulsion gravitation tank (1) into
Agent, opens emulsion measuring pump (5), by adjusting breakdown of emulsion box (8) triple valve (4), (11) in front and back so as in emulsion gravitation tank
(1), breakdown of emulsion box (8), emulsion recycling can (12) interior circulation back and forth flow, and are rapidly completed the cleaning of device；
In step B, after crude oil emulsion is in steady flow in Fast Evaluation device, in addition to using electric field breakdown of emulsion, may be used also
To inject demulsifier on the pipeline using dosing pump (19) between front sample tap (7) and breakdown of emulsion box (8), can be with demulsifier
Under independent role or " electric field+demulsifier " collective effect, Fast Evaluation is carried out to its breaking emulsion and dewatering characteristic；
Before and after in step C, sample tap sampling interval time should be corresponding with the emulsion electric field action time, by as far as possible
Measurement contrast causes experimental data more credible with a batch of crude oil emulsion；
During step D is to sample analysis sign, can dispersion phase particle water particle diameter, breast in independent measurement crude oil emulsion
Change liquid stability, centrifugal dehydration rate data, it is also possible to which several characterization methods are used in combination.
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| CN110850066A (en) * | 2019-12-13 | 2020-02-28 | 哈尔滨理工大学 | Dynamic simulation test device for evaluating crude oil dehydration demulsifier |
| CN112051390B (en) * | 2020-08-06 | 2023-10-27 | 中国石油集团工程股份有限公司 | Oilfield demulsification and dehydration performance evaluation system and evaluation method |
| CN113213730B (en) * | 2021-03-15 | 2024-02-27 | 长江三星能源科技股份有限公司 | Oil-containing sludge and emulsified dirty oil reduction recycling treatment process and equipment |
| CN114354691B (en) * | 2021-12-31 | 2023-10-27 | 北京石油化工学院 | Crude oil emulsion electric field demulsification characteristic evaluation device |
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| CN200964398Y (en) * | 2006-10-20 | 2007-10-24 | 辽河石油勘探局 | Crude oil dehydration dynamic analog device |
| CN101173182B (en) * | 2007-06-02 | 2013-07-10 | 中国石油大学(华东) | Novel crude oil emulsion electrostatic dehydrator |
| US8043858B2 (en) * | 2008-07-15 | 2011-10-25 | General Electric Company | Dynamic desalter simulator |
| CN201501846U (en) * | 2009-09-23 | 2010-06-09 | 北京石油化工学院 | Novel crude oil electric dehydration and desalination apparatus based on dielectrophoresis demulsification mechanism |
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| CN202829959U (en) * | 2012-10-28 | 2013-03-27 | 东北石油大学 | High-frequency pulse electric dehydration device for treatment of aged crude oil |
| CN103059909A (en) * | 2013-01-10 | 2013-04-24 | 哈尔滨理工大学 | Crude oil electric dehydration dynamic visualization simulation device and method for preparing dehydrated crude oil by utilizing same |
| CN203768310U (en) * | 2014-03-04 | 2014-08-13 | 中石化洛阳工程有限公司 | Visible dynamic electric dehydration simulation device |
| CN203904275U (en) * | 2014-05-15 | 2014-10-29 | 中石化洛阳工程有限公司 | Electrode plate for crude oil electric dehydrator |
| CN204556624U (en) * | 2015-04-15 | 2015-08-12 | 北京石油化工学院 | The dynamic breaking emulsion and dewatering apparatus for evaluating characteristics of crude oil emulsion |
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