CN104560128B - Vertical electrostatic coalescer sledge dressization testing apparatus and method - Google Patents
Vertical electrostatic coalescer sledge dressization testing apparatus and method Download PDFInfo
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- CN104560128B CN104560128B CN201410784191.5A CN201410784191A CN104560128B CN 104560128 B CN104560128 B CN 104560128B CN 201410784191 A CN201410784191 A CN 201410784191A CN 104560128 B CN104560128 B CN 104560128B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/02—Dewatering or demulsification of hydrocarbon oils with electrical or magnetic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/06—Separation of liquids from each other by electricity
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Vertical electrostatic coalescer sledge dressization testing apparatus and method, can test at Oil Field, the serviceability of vertical electrostatic coalescer can evaluate, carry out preferably device processes amount and electric pulse field parameter.All devices is all fixed on the sledge cartridge chassis of convenient transport, mainly comprises power-supply unit, coalescing device and separating device etc.Power-supply unit is housing and transformer, can provide high-voltage for vertical electrostatic coalescer, impels the water droplet in water-in-oil emulsion to occur coalescent; By-pass gate and in-line pump etc. is utilized to regulate the treatment capacity of vertical electrostatic coalescer and water-and-oil separator, by distillation method measure coalescer entrance, outlet and separator oil export place water ratio with the separating effect of comparative analysis pilot system, and preferred equipment treatment capacity and electric pulse field parameter accordingly.Adopt sledge dressization equipment of the present invention, there is convenient transportation, advantage quick for installation, the serviceability of vertical electrostatic coalescer can be tested, contribute to type selecting and the optimization of operating parameters of equipment.
Description
Technical field
The present invention relates to a kind of vertical electrostatic coalescer sledge dressization testing apparatus and method, for simulating the technical process of vertical electrostatic coalescer strengthen dewatering, belonging in oil-gas gathering and transportation system oil field mining liquid dewatering process.
Background technology
Water-in-oil emulsion is extensively present in the Industrial processes such as oil, chemical industry, usually adopts chemistry and physical method accelerate the thinning of water droplet interfacial film and break thus improve coalescence efficiency.Electrostatic coalescence technology is one of method commonly used in dehydrating of crude oil process, and its ultimate principle applies high-strength electric field to milk sap, increases collision and the gathering of dispersion water droplet, promotes water droplets coalescence, acceleration oily water separation.
The joint station of China's overwhelming majority onshore oil field uses traditional Horizontal electric water trap at present, but the use of adopting auxiliary agent along with a large amount of three, form stable water-in-oil emulsion, water ratio is caused to increase, breakdown of emulsion difficulty, polymkeric substance easily in electrical dehydrator inner accumulated, and likely causes that strength of electric field reduces, excessive or " the collapse electric field " phenomenon of dehydration current, causes extreme influence to field produces.Vertical electrostatic coalescer is a kind of new and effective milk sap coalescing device developed for tackling current this situation, there is the advantage of significantly reducing equipment volume under the prerequisite ensureing profit high efficiency separation, save cost, reduce energy consumption, improve safety performance, adapt to the needs of current field produces exploitation.US Patent No. 6136174 discloses a kind of dehydrating of crude oil electrostatic coalescer (CEC), and its electrode part is alternately arranged with the form of vertical coaxial cylinder by insulated electrode and metal electrode.Chinese patent 200710015911.1 (granted patent notification number CN101173182A) discloses a kind of crude oil emulsion electrostatic dehydrator, its coalescing section is arranged on electrical dehydrator top, and electrode part is also be alternately arranged with the form of vertical coaxial cylinder by insulated electrode and metal electrode.The advantages such as the electrode of this form takes full advantage of space, has compact construction, and floor space is little.At present, vertical electrostatic coalescer at use in-site installation, carries out debugging to determine working parameter mostly afterwards again.But the water-in-oil emulsion physico-chemical property formed due to different blocks is different, the strength of electric field, electric field frequency and electric field waveform etc. of effective voltolisation knot can be realized also different to water droplet, it is also unknown whether vertical electrostatic coalescer adapts to site disposal environment, likely cause lectotype selection unreasonable or cannot normally work, waste investment.Therefore before installed vertical electrostatic coalescer, the coalescent effect after water-in-oil emulsion energising is evaluated, preferred electric pulse field parameter, significant for purchasing of the design of electrostatic coalescer and potential device.Chinese patent 201320477801.8 (granted patent notification number CN203474723U) discloses a kind of two-stage automatic electric and takes off testing apparatus, then the water-oil emulsion that test crude oil cuts into Pass Test requirement is injected dewatering and desalting tank carry out powering up dehydration test by shearing oil-water mixer, but the character of water-in-oil emulsion except with shearing resistance also with processing environment, piping systems etc. are relevant, so indoor electric takes off the processing environment at the test scene of cannot truly reducing, the test-results obtained also can be affected.Aforesaid device or because of Industrial products, volume is comparatively large, and tooling cost is higher, transport is installed inconvenient, and scene of can easily not arriving is tested, or because belonging to laboratory experiment, be difficult to the treatment condition of complete simulated field, the result obtained is not representative yet.
Therefore be necessary to utilize vertical electrostatic coalescer to test at the scene, to determine the suitability of equipment and optimizing technology parameters, make the type selecting of the design and equipment of coalescer have more specific aim.In view of above reason, be necessary that invention is a set of to use at Oil Field, actual production technical process can be simulated, the coalescent effect of vertical electrostatic coalescer is evaluated, preferred sledge dressization pilot system is carried out to equipment parameters, for the design and running of vertical electrostatic coalescer provides foundation, make equipment de-sign more reasonable, use more efficient.
Summary of the invention
The object of the invention is to provide a kind of vertical electrostatic coalescer sledge dressization testing apparatus and method, solve water-in-oil emulsion processing environment different, shop experiment such as cannot to reproduce completely at the problem, and can be applied to Oil Field quickly and easily, vertical electrostatic coalescer treatment effect and working parameter carry out evaluating and preferably.The result utilizing vertical electrostatic coalescer sledge dressization testing apparatus to obtain can provide reference frame for the design of commercial scale plant.
A kind of vertical electrostatic coalescer sledge dressization testing apparatus, is characterized in that comprising entrance pipe, export pipeline, under meter, vertical electrostatic coalescer, gravitational separator, water out under meter, oil export under meter, in-line pump, transformer, transformer bracket, sledge cartridge chassis;
Described vertical electrostatic coalescer, gravitational separator and transformer are installed on sledge cartridge chassis, and described staircase is installed on transformer bracket at the scene;
Described entrance pipe connects gate valve 1 and by-pass gate 2 respectively by threeway, and described gate valve 1 and by-pass gate 2 composition control valve group are for controlling the flow of entrance pipe; Described gate valve 1 front end is connected with metering module; Described metering module is made up of the by-pass line of main line and band ball valve, and wherein main line is made up of ball valve, strainer, tensimeter, under meter, rear end ball valve successively;
Vertical electrostatic coalescer is connected in the front end of described metering module, the inlet end of described vertical electrostatic coalescer and exit end are respectively equipped with entrance thief hole and outlet thief hole, described vertical electrostatic coalescer is connected with transformer, the exit end of described vertical electrostatic coalescer is connected with by-pass line with gravity separation pipeline respectively by threeway, wherein gravity separation pipeline is provided with gate valve and gravitational separator successively; The exit end of described gravitational separator is divided into water out and oil export, and described water out and oil export are respectively equipped with water out thief hole and oil export thief hole.The front end of described water out and oil export is connected to metering module, the main line of described metering module by band under meter and the by-pass line composition of band ball valve; The front end of the metering module of described water out and oil export is all connected to in-line pump module by check valve;
The by-pass line of described vertical electrostatic coalescer exit end is connected with described in-line pump module with check valve by gate valve 2 successively, and described by-pass gate 1 and gate valve 2 composition control valve group are for controlling the flow of gravitational separator;
Described by-pass gate 2 the other end be connected with entrance pipe is also connected with described in-line pump module;
Described in-line pump module is made up of the main line containing in-line pump and the by-pass line containing variable valve, and for providing power for whole system, the exit end of in-line pump module is export pipeline.
If pilot system frictional resistance is comparatively large, milk sap proper flow cannot can provide power by in-line pump, if can proper flow, does not need turn on pump only need walk the by-pass valve of in-line pump.
The port of described entrance pipe and export pipeline, all with stainless steel wired hose, can be connected with field processing equipment with reducing by flange.
Described electrostatic coalescer treatment capacity is 0 ~ 300m
3/ d (12.5m
3/ h), be highly 2300mm, cylindrical shell external diameter 300mm.The treatment capacity of described gravitational separator is 0 ~ 24m
3/ d (1m
3/ h), diameter 0.5m, long 1600mm.The process flow of vertical electrostatic coalescer can be regulated by by-pass gate 2, and the process flow of gravitational separator can be regulated by by-pass gate 1.Utilize under meter, water out under meter and oil export under meter can the process flow of the vertical electrostatic coalescer of accurate measurement and gravitational separator.
Be connected with high-voltage connection rod via explosion-proof wired hose between described transformer and vertical electrostatic coalescer; Around gravitational separator, have transformer bracket to be arranged on described sledge cartridge chassis, described transformer is arranged on above transformer bracket, around transformer, be provided with guardrail, and sledge cartridge chassis is also provided with the staircase leading to transformer.
Working process of the present invention is: after the vertical electrostatic coalescer pilot system be arranged on sledge cartridge chassis being transported to Oil Field by lorry, utilize entrance pipe and export pipeline by stainless steel wired hose, reducing is connected with site disposal system with flange etc., in-line pump provides power, so that milk sap can pass through pilot system.Transformer is placed on transformer bracket, and has installed guardrail additional, ensures safety.Produce high voltage electric by transformer to be input in vertical electrostatic coalescer through explosion-proof wired hose and high-voltage connection rod and to process water-in-oil emulsion.Open gate valve 1 and by-pass gate 2 and regulate the flow entering the water-in-oil emulsion of vertical electrostatic coalescer, and measured by under meter, namely can test after flow meets test requirements document.Regulate input voltage by housing and export to after transformer boost in vertical electrostatic coalescer, thus high-strength electric field is applied to water-oil emulsion, impelling water droplet to occur coalescent, accelerating oily water separation.By the restriction of floor space, the small volume of gravitational separator, when the flow of the water-in-oil emulsion flowing through vertical electrostatic coalescer is larger than the treatment capacity of gravitational separator, can regulate by controlling the aperture of by-pass gate 1 flow entering gravitational separator, being obtained the treatment capacity of gravitational separator simultaneously by the observed value of water out under meter and oil export under meter.The water directly do not flowed out with water out and oil export through the water-in-oil emulsion of gravitational separator, oilyly mix and flow to subsequent processing device through export pipeline.Because pilot system flow process is compact, equipment is more, and frictional resistance is comparatively large, and when the pressure in on-the-spot separation system cannot ensure that water-in-oil emulsion passes through pilot system, needing to start in-line pump for pilot system provides power.It is to prevent excessive shear water-in-oil emulsion that in-line pump is not put into entrance pipe place, increases the difficulty be separated.Oil length in water is measured by water out thief hole in process of the test, adopt the method monitoring entrance thief hole of distillation, outlet thief hole and the water ratio of oil export thief hole carry out the separating effect of analytical test system, and the treatment capacity of vertical electrostatic coalescer and gravitational separator when determining that separating effect is optimum accordingly.Input waveform can be regulated by housing, voltage and frequency etc. simultaneously, to evaluate the separating effect under different electric pulse field parameter, and then determine optimum electric pulse field parameter, for equipment de-sign and type selecting provide guidance.
Ultimate principle of the present invention is connected in the production system of Oil Field by testing apparatus by stainless steel wired hose, water-in-oil emulsion enters vertical electrostatic coalescer after under meter, utilize silicon controlled rectifier automatic Regulation or constant-current source control cabinet (being connected with transformer 20) to regulate input voltage and be input to after transformer boost in vertical electrostatic coalescer and high-strength electric field is applied to the water-oil emulsion flowing through coalescer, impel water droplet to occur coalescent, accelerate oily water separation.Flow through the part of the water-in-oil emulsion after vertical electrostatic coalescer to be shunted, a part enters gravitational separator and carries out gravity settling, isolated oil phase, aqueous phase are discharged by oil export and water out, and the water-oil emulsion be separated with without gravitational separator mixes, and enters later separation equipment.The coalescent effect of electrostatic coalescer is evaluated in the change of the water ratio at employing electrostatic coalescer entrance, outlet, separator oil export place.
The invention has the beneficial effects as follows, all equipment is arranged on sledge cartridge chassis, compact construction, and floor space is little, with goods vehicle, equipment can be transported to oil field and carry out test in place; The entrance and exit of pilot system is all furnished with flange, can be connected fast, not affect normal production by stainless steel wired hose with reducing etc. with Oil Field technical process; Piping system is coated with thermal insulation layer and ensures that emulsion temperature keeps stable; The treatment effect of evaluation test system is carried out with the change of the water ratio at vertical electrostatic coalescer entrance, outlet, separator oil export place; The process flow of vertical electrostatic coalescer and separator can be controlled by by-pass gate, even if coalescer treatment capacity exceedes separator capacity, also being separated by gate valve makes equipment normally work, and then can determine the treatment capacity of equipment optimum, for equipment de-sign and operation provide parameter; Housing and voltate regulator combine can provide multiple waveforms, regulating voltage and frequency, thus the separating effect of system under different electric pulse field parameter effect can be evaluated, for electric pulse field parameter preferably provides reference; At exit pipe laying pump, power can be provided to avoid again in ingress water-in-oil emulsion excessive shear for pilot system; Transformer is positioned on transformer bracket can improve space availability ratio, and easy to operate; Guardrail and staircase can ensure safety when operating.
Accompanying drawing illustrates:
Fig. 1 is schema of the present invention;
Wherein, 1-entrance pipe, 2-gate valve, 13-ball valve, 4-strainer, 5-tensimeter, 6-under meter, 7-entrance thief hole, 8-vertical electrostatic coalescer 9-outlet thief hole, 10-gravitational separator, 11-water out, 12-oil export, 13-water out thief hole, 14-oil export thief hole, 15-water out under meter, 16-check valve, 17-oil export under meter, 18-in-line pump, 19-export pipeline, 20-transformer, 21-by-pass gate, 122-by-pass gate, 229-gate valve 2.
Fig. 2 is structural representation of the present invention.
Wherein, 23-explosion-proof wired hose 24-guardrail, 25-transformer bracket, 26-sledge cartridge chassis, 27-staircase, 28-high-voltage connection rod.
Embodiment
See accompanying drawing 1 and accompanying drawing 2, the present invention is by entrance pipe (1), gate valve 1 (2), ball valve (3), strainer (4), tensimeter (5), under meter (6), entrance thief hole (7), vertical electrostatic coalescer (8), outlet thief hole (9), gravitational separator (10), water out (11), oil export (12), water out thief hole (13), oil export thief hole (14), water out under meter (15), check valve (16), oil export under meter (17), in-line pump (18), export pipeline (19), transformer (20), by-pass gate 1 (21), by-pass gate 2 (22), explosion-proof wired hose (23), guardrail (24), transformer bracket (25), sledge cartridge chassis (26), staircase (27), high-voltage connection rod (28), the compositions such as gate valve 2 (29).Except staircase (27) is to in-site installation on transformer bracket (25), miscellaneous equipment is all be fixed on sledge cartridge chassis (26).
As Fig. 1, 2, device provided by the invention gathers knot and separating device in integrally, can apply at Oil Field easily, the coalescent effect of vertical electrostatic coalescer is evaluated, preferred sledge dressization pilot system is carried out to electric pulse field parameter, comprise: entrance pipe (1), gate valve 1 (2), ball valve (3), strainer (4), tensimeter (5), under meter (6), entrance thief hole (7), vertical electrostatic coalescer (8), outlet thief hole (9), gravitational separator (10), water out (11), oil export (12), water out thief hole (13), oil export thief hole (14), water out under meter (15), check valve (16), oil export under meter (17), in-line pump (18), export pipeline (19), transformer (20), by-pass gate 1 (21), by-pass gate 2 (22), explosion-proof wired hose (23), guardrail (24), transformer bracket (25), sledge cartridge chassis (26), staircase (27), high-voltage connection rod (28), gate valve 2 (29) etc.It is characterized in that: all devices is all arranged on sledge cartridge chassis (26), the wide 2000mm in chassis, long 6000mm can transport Oil Field to by goods vehicle and test; Be connected with Oil Field oil-water process system with export pipeline (19) by entrance pipe (1); High voltage electric is input in vertical electrostatic coalescer (8) by explosion-proof wired hose (23) and high-voltage connection rod (28) by transformer (20).
Vertical electrostatic coalescer (8) utilizes static electric field process water-in-oil emulsion, is provided with entrance thief hole (7) and outlet thief hole (9), can measures the microscopic pattern of Water in oil rate and milk sap.The interior electrode of vertical electrostatic coalescer (8) can be for convenience detach, can change different electrode assemblies according to oil property, also can detect the performance characteristics of electrode assemblie.
Described in-line pump is arranged on export pipeline (19) place, can produce intensive shear to prevent being arranged on entrance pipe (1) place to milk sap, causes breakdown of emulsion difficulty, cannot warranty test result accuracy.
Described transformer is installed on transformer bracket (25), and has guardrail (24) and staircase (27) protection, and handled easily, ensures safety.
After described gravitational separator is installed on vertical electrostatic coalescer (8), all or part of process of gravity field can be utilized through the water-in-oil emulsion of vertical electrostatic coalescer (8), aqueous phase is separated.And water out thief hole (13) is installed respectively and oil export thief hole (14) is analyzed to facilitate oil length and Water in oil rate in water at water out (11) and oil export (12)
Described by-pass gate: the treatment capacity that can be regulated gravitational separator (10) by by-pass gate 1 (21), even if vertical electrostatic coalescer (8) treatment capacity exceedes the treatment capacity of gravitational separator (10), also by the mode warranty test system worked well of shunting, thus the floor space of gravitational separator (10) and the floor space of sledge assembling system can be reduced.
After described check valve is installed on water out under meter (15) and oil export under meter (17), before in-line pump (18), to prevent liquid from flowing backwards, equipment and production system are damaged.
Utilize above-mentioned vertical electrostatic coalescer sledge dressization testing apparatus to carry out the preferred method of equipment parameters, it is characterized in that comprising the following steps:
1) by lorry, above-mentioned vertical electrostatic coalescer sledge dressization testing apparatus is transported to Oil Field, utilizes entrance pipe (1) to be connected with site disposal system with export pipeline (19),
2) provide power with in-line pump (18), pass through pilot system to enable milk sap;
3) produce high voltage electric by transformer (20) and be input to process water-in-oil emulsion in vertical electrostatic coalescer (8); Open gate valve 1 (2) and by-pass gate 2 (22) and regulate the flow entering the water-in-oil emulsion of vertical electrostatic coalescer (8), and measured by under meter (6), namely can test after flow meets default requirement;
4) by regulating input voltage and exporting in vertical electrostatic coalescer (8) after transformer (20) boosting, thus high-strength electric field is applied to water-oil emulsion, impel water droplet to occur coalescent, accelerate oily water separation;
5) when the flow of the water-in-oil emulsion flowing through vertical electrostatic coalescer (8) is larger than the treatment capacity of gravitational separator (10), regulating by controlling the aperture of by-pass gate 1 (21) flow entering gravitational separator (10), being obtained the treatment capacity of gravitational separator simultaneously by the observed value of water out under meter (15) and oil export under meter (17); The water directly do not flowed out with water out (11) and oil export (12) through the water-in-oil emulsion of gravitational separator (10), oilyly mix and flow to subsequent processing device through export pipeline (19);
6) oil length in water is measured by water out thief hole (13) in process of the test, adopt method monitoring entrance thief hole (7) of distillation, the water ratio of outlet thief hole (9) and oil export thief hole (14) carrys out the separating effect of analytical test system, and determines the treatment capacity of vertical electrostatic coalescer (8) and gravitational separator (10) when separating effect is optimum accordingly;
7) regulate input waveform by housing, voltage and frequency, to evaluate the separating effect under different electric pulse field parameter, and then determine that optimum electric pulse field parameter comprises waveform, strength of electric field and frequency;
Utilize square being directly proportional of the coalescent effect in electrostatic coalescer and electric field strength E, be directly proportional to frequency f, with electric field action time t
ebe directly proportional, with oil viscosity μ
othe character be inversely proportional to; And utilize disengaging time t in gravity separation effect and gravity separator
sbe directly proportional, with oil density ρ
owith water-mass density ρ
wdifference be inversely proportional to, with the density μ of oil
obe inversely proportional to, the character be inversely proportional to milk sap thickness H;
Obtain two criterion numerals
as long as two criterion numerals meeting testing installation and industrial equipments are equal; If for same water-oil emulsion, and obtain optimum strength of electric field and frequency by experiment, as long as so meet t when designing electrical dehydrator
e, t
s/ H is consistent;
Wherein t
e=L
ea
e/ Q
e, L
efor electrostatic coalescer height, Q
efor electrostatic coalescer flow, A
efor electrostatic coalescer sectional area; t
s/ H=Q
s/ A
sl
sh, L
sfor separator length, Q
sfor separator flow, A
efor electrostatic coalescer sectional area; Namely the design variable of electrostatic coalescer and gravity separator Industrial products can be obtained by above-mentioned formula.
As the electrostatic coalescer flow Q at scene
eit is the parameter known; L
efor electrostatic coalescer height, A
efor electrostatic coalescer sectional area, be the parameter that two parameters can regulate mutually, if there is that L of requirement for height at such as scene
eknown, can A be obtained
e.If do not require that just according to the practical situation adjustment L of equipment
eand A
emeet the demands, final purpose is exactly by known flow Q
eobtain L
eand A
e.In like manner for separator t
s/ H=Q
s/ A
sl
sh is also Q
sknown, determine parameter A according to specification " SY/T0515-2007 separator specification "
s, L
s, H.
Its principle researchs and analyses according to the present invention, and square being directly proportional of the agglomeration process in known electrostatic coalescer and electric field strength E, is directly proportional to frequency f, with electric field action time t
ebe directly proportional, with oil viscosity μ
obe inversely proportional to;
Disengaging time t in gravity based separation process and gravity separator
sbe directly proportional, with oil density ρ
owith water-mass density ρ
wdifference be inversely proportional to, with the density μ of oil
obe inversely proportional to, be inversely proportional to milk sap thickness H;
Therefore two criterion numerals can be obtained
as long as two criterion numerals meeting testing installation and industrial equipments are equal; If for same water-oil emulsion, and obtain optimum strength of electric field and frequency by experiment, as long as so meet t when designing electrical dehydrator
e, t
s/ H is consistent;
Wherein t
e=L
ea
e/ Q
e, L
efor electrostatic coalescer height, Q
efor electrostatic coalescer flow, A
efor electrostatic coalescer sectional area; t
s=Q
s/ A
sl
s, L
sfor separator length, Q
sfor separator flow, A
efor electrostatic coalescer sectional area; Namely the design variable of electrostatic coalescer and gravity separator Industrial products can be obtained by above-mentioned formula.
Certainly also by Artificial Neural Network, separating effect φ and electric field strength E is obtained, electric field frequency f, profit density difference ρ
w-ρ
o, oil viscosity μ
o, electrostatic coalescer flow Q
e, separator flow Q
sbetween relation, the relation between separator milk sap layer thickness H, φ=f (E, f, ρ
w-ρ
o, μ
o, Q
e, Q
s, H), can be used for the parameter making Industrial products.
Claims (5)
1. a vertical electrostatic coalescer sledge dressization testing apparatus, it is characterized in that comprising entrance pipe (1), export pipeline (19), under meter (6), vertical electrostatic coalescer (8), gravitational separator (10), water out under meter (15), oil export under meter (17), in-line pump (18), transformer (20), transformer bracket (25), sledge cartridge chassis (26) and staircase (27);
Described vertical electrostatic coalescer (8), gravitational separator (10) and transformer (20) are installed on sledge cartridge chassis (26), and described staircase (27) is installed on transformer bracket (25) at the scene;
Described entrance pipe (1) connects gate valve 1 (2) and by-pass gate 2 (22) respectively by threeway, and described gate valve 1 (2) and by-pass gate 2 (22) composition control valve group are for controlling the flow of entrance pipe (1); Described gate valve 1 (2) front end is connected with metering module; Described metering module is made up of the by-pass line of main line and band ball valve, and wherein main line is made up of ball valve (3), strainer (4), tensimeter (5), under meter (6), rear end ball valve successively;
Vertical electrostatic coalescer (8) is connected in the front end of described metering module, the inlet end of described vertical electrostatic coalescer (8) and exit end are respectively equipped with entrance thief hole (7) and outlet thief hole (9), described vertical electrostatic coalescer (8) is connected with transformer (20), the exit end of described vertical electrostatic coalescer (8) is connected with by-pass line with gravity separation pipeline respectively by threeway, wherein gravity separation pipeline is provided with successively by-pass gate 1 (21) and gravitational separator (10); The exit end of described gravitational separator (10) is divided into water out (11) and oil export (12), and described water out (11) and oil export (12) are respectively equipped with water out thief hole (13) and oil export thief hole (14); The front end of described water out (11) and oil export (12) is connected to metering module, the main line of described metering module by band under meter and the by-pass line composition of band ball valve; The front end of the metering module of described water out (11) and oil export (12) is all connected to in-line pump module by check valve (16);
The by-pass line of described vertical electrostatic coalescer (8) exit end is connected with described in-line pump module with check valve by gate valve 2 (29) successively, and described by-pass gate 1 (21) and gate valve 2 (29) composition control valve group are for controlling the flow of gravitational separator;
Described by-pass gate 2 (22) the other end be connected with entrance pipe (1) is also connected with described in-line pump module;
Described in-line pump module is made up of the main line containing in-line pump (18) and the by-pass line containing variable valve, and for providing power for whole system, the exit end of in-line pump module is export pipeline (19).
2. vertical electrostatic coalescer sledge dressization testing apparatus as claimed in claim 1, is characterized in that the port of described entrance pipe (1) and export pipeline (19) is all with stainless steel wired hose.
3. vertical electrostatic coalescer sledge dressization testing apparatus as claimed in claim 1, is characterized in that described electrostatic coalescer treatment capacity is 0 ~ 300m
3/ d is highly 2300mm, cylindrical shell external diameter 300mm; The treatment capacity of described gravitational separator (10) is 0 ~ 24m
3/ d, diameter 0.5m, long 1600mm.
4. vertical electrostatic coalescer sledge dressization testing apparatus as claimed in claim 1, is characterized in that being connected with high-voltage connection rod (28) via explosion-proof wired hose (23) between described transformer (20) and vertical electrostatic coalescer (8); Around gravitational separator (10), there is transformer bracket (25) to be arranged on described sledge cartridge chassis (26), described transformer (20) is arranged on transformer bracket (25) top, around transformer (20), be provided with guardrail (24), sledge cartridge chassis (26) is provided with the staircase (27) leading to transformer (20).
5. utilize the vertical electrostatic coalescer sledge dressization testing apparatus described in claim 1 to carry out the preferred method of equipment parameters, it is characterized in that comprising the following steps:
1) by lorry, above-mentioned vertical electrostatic coalescer sledge dressization testing apparatus is transported to Oil Field, utilizes entrance pipe (1) to be connected with site disposal system with export pipeline (19),
2) provide power with in-line pump (18), pass through pilot system to enable milk sap;
3) produce high voltage electric by transformer (20) and be input to process water-in-oil emulsion in vertical electrostatic coalescer (8); Open gate valve 1 (2) and by-pass gate 2 (22) and regulate the flow entering the water-in-oil emulsion of vertical electrostatic coalescer (8), and measured by under meter (6), namely can test after flow meets default requirement;
4) by regulating input voltage and exporting in vertical electrostatic coalescer (8) after transformer (20) boosting, thus high-strength electric field is applied to water-oil emulsion, impel water droplet to occur coalescent, accelerate oily water separation;
5) when the flow of the water-in-oil emulsion flowing through vertical electrostatic coalescer (8) is larger than the treatment capacity of gravitational separator (10), regulating by controlling the aperture of by-pass gate 1 (21) flow entering gravitational separator (10), being obtained the treatment capacity of gravitational separator simultaneously by the observed value of water out under meter (15) and oil export under meter (17); The water directly do not flowed out with water out (11) and oil export (12) through the water-in-oil emulsion of gravitational separator (10), oilyly mix and flow to subsequent processing device through export pipeline (19);
6) oil length in water is measured by water out thief hole (13) in process of the test, adopt method monitoring entrance thief hole (7) of distillation, the water ratio of outlet thief hole (9) and oil export thief hole (14) carrys out the separating effect of analytical test system, and determines the treatment capacity of vertical electrostatic coalescer (8) and gravitational separator (10) when separating effect is optimum accordingly;
7) regulate input waveform by housing, voltage and frequency, to evaluate the separating effect under different electric pulse field parameter, and then determine that optimum electric pulse field parameter comprises waveform, strength of electric field and frequency;
Utilize square being directly proportional of the coalescent effect in electrostatic coalescer and electric field strength E, be directly proportional to frequency f, with electric field action time t
ebe directly proportional, with oil viscosity μ
othe character be inversely proportional to; And utilize disengaging time t in gravity separation effect and gravity separator
sbe directly proportional, with oil density ρ
owith water-mass density ρ
wdifference be inversely proportional to, with the density μ of oil
obe inversely proportional to, the character be inversely proportional to milk sap thickness H;
Obtain two criterion numerals
as long as two criterion numerals meeting testing installation and industrial equipments are equal; If for same water-oil emulsion, and obtain optimum strength of electric field and frequency by experiment, as long as so meet t when designing electrical dehydrator
e, t
s/ H is consistent;
Wherein t
e=L
ea
e/ Q
e, L
efor electrostatic coalescer height, Q
efor electrostatic coalescer flow, A
efor electrostatic coalescer sectional area; t
s/ H=Q
s/ A
sl
sh, L
sfor separator length, Q
sfor separator flow, A
efor electrostatic coalescer sectional area; Namely the design variable of electrostatic coalescer and gravity separator Industrial products can be obtained by above-mentioned formula.
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