CN103450927A - Dehydration plant for complex electric field - Google Patents
Dehydration plant for complex electric field Download PDFInfo
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- CN103450927A CN103450927A CN2013103290181A CN201310329018A CN103450927A CN 103450927 A CN103450927 A CN 103450927A CN 2013103290181 A CN2013103290181 A CN 2013103290181A CN 201310329018 A CN201310329018 A CN 201310329018A CN 103450927 A CN103450927 A CN 103450927A
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Abstract
The invention discloses a dehydration plant for a complex electric field. The dehydration plant for the complex electric field comprises a separating tank, a crude oil inlet-outlet pipe, a drainage pipe, a feeding distributor, an oil collection pipe and a transformer, wherein the crude oil inlet-outlet pipe and the drainage pipe are arranged on a tank body; the feeding distributor and the oil collection pipe are arranged inside the separating tank and are connected with the crude oil inlet-outlet pipe; the transformer is arranged outside the tank body; a complex electric field area for separating oil and water is arranged between the feeding distributor and the oil collection pipe, and comprises a plurality of electrode layers arranged in a vertical direction at intervals; the plurality of electrode layers comprise at least one first electrode layer electrically connected with the transformer and at least one second electrode layer which is grounded; the at least one first electrode layer and the at least one second electrode layer are mutually matched to form at least two electric field areas arranged in the vertical direction. With the adoption of the dehydration plant for the complex electric field provided by the invention, multilevel efficient oil-water separation can be effectively carried out on high-water-content crude oil with different water contents, so that the production purpose of the crude oil can be realized.
Description
Technical field
The present invention relates to the crude oil upgrading field, relate in particular to high water-content crude oil oily water separation technique field, tool relates to a kind of compound field dewatering unit.
Background technology
Widespread use along with deep development and the tertiary oil recovery technology in oil field, heavy oil, viscous crude and super viscous crude, peracid, high-sulfur, the output of the crude oil with poor quality such as high water content increases year by year, the utilization of these crude oil need to be carried out the pretreatment technology of oily water separation usually, but in current oily water separation correlation technique, high water-content crude oil occurs that in oil water separation process dewatering efficiency is low, draining is containing innage, fluctuation of current appears while making it enter the last step apparatus for electrodewatering, the electric current superelevation, the risk even tripped, have a strong impact on the long-term safety steady running of oily water separating equipment, in addition, along with increasing of water content in crude oil, its oily water separation treatment system load increases, processing efficiency reduces, be difficult to meet the current demand to high water-content crude oil oily water separation.
Current high water-content crude oil oil water separation process is used the separation process of triphase separator+thermochemistry separation+electro-dewatering usually, but that the oil-water separation method of this routine exist to separate progression is many, and equipment is numerous and jumbled, and floor space is large, and the problem such as separation efficiency is low.
For improving the separation efficiency of oily water separation, in practice, adopt the mode that applies electric field to carry out oily water separation to high water-content crude oil, as in publication number be CN1233793C the technical scheme of " crude oil electro-desalting dehydrator ", disclosed a kind of employing, utilize the coalescent district of highfield crude oil to be taken off to the technical scheme of electro-dewatering, to solve the employing weak electric field charging that existing electric desalting and dewatering device exists, the voltolisation effect of forceful electric power place is weakened, crude oil flows from bottom to top and causes blocking the problem of drops of water fall down, but this scheme is directly used highfield to carry out oily water separation, there are conduction risk and potential safety hazard greatly.The patent that the patent No. is CN201735213U discloses a kind of oil gas depositing in water and has fallen separation electro-dewatering Multifunctional three-phase tripping device, be provided with successively settling pocket, electro-dewatering chamber and hydroecium within separating cylindrical shell, the indoor electrode plate with high voltage that is provided with of electro-dewatering, this technical scheme directly adopts the bare metal electrode to apply high-voltage electric field in the moisture flash trapping stage tank of height, electric current raise and easily cause short circuit even to be tripped, affecting the tripping device safe operation.The patent that the patent No. is CN102021020A has been announced a kind of novel crude oil electro-dewatering, desalting method and equipment based on the dielectrophoresis Mechanismic, adopt vertically suspended corrugated plate shape insulated electrode to produce the horizontal variation alternating-electric field, for the disperse phase particle water, grow up and meticulous dewatering and desalting, but in this technical scheme, there are the following problems: vertically hang the pole plate bottom and be " line-face " electric field with water-oil interface, the electric field region fluctuation is large, is unfavorable for that the position, boundary is stable and dewaters; Adopt and vertically hang corrugated plate shape insulated electrode assembly, but see that from whole electric field region horizontal direction is uniform electric field, the vertical direction electric field is " strong-weak-strong-weak-strong-weak " gradual change electric field, there is no steady and audible weak electric field region and strong electric field region, is unfavorable for dehydrating of crude oil; And only adopt the single insulating electrode to be difficult to reach the deep dehydration index.
To sum up, along with the development requirements such as deep water oil field, marginal oil field, green oilfield increase, its water content in crude oil of exploiting out is more and more higher, crude oil in poor quality trend is more and more serious, and in current crude oil upgrading flow process, oil water separation process exists that separation efficiency is low, separating effect is not good and has the problem such as potential safety hazard, be difficult to meet the current demand that high water-content crude oil is separated.
Summary of the invention
In order to overcome that the separation efficiency that existing oily water separation correlation technique exists is low, separating effect is not good and to have the deficiency such as potential safety hazard, the invention provides a kind of compound field that utilizes and the high water-content crude oil of different moisture content is carried out to the compound field dewatering unit of multi-stage, efficient oily water separation.
The technical solution adopted for the present invention to solve the technical problems is: a kind of compound field dewatering unit, comprise separating tank, crude oil inlet/outlet pipe, water shoot, feed distributor, oil header and transformer, crude oil inlet/outlet pipe and water shoot are located on tank body, and feed distributor and oil header are located in tank and are connected with the crude oil inlet/outlet pipe; Transformer is located at outside tank body; Be provided with the compound electric place for profit is separated between feed distributor and oil header, described compound electric place is included in spaced apart several electrode layers on vertical direction, described several electrode layers comprise the first electrode layer that at least one and described transformer are electrically connected and the second electrode lay of at least one ground connection, described at least one first electrode layer and described at least one the second electrode lay cooperatively interact, and form at least two electric field regions of arranging at vertical direction.
In compound field dewatering unit of the present invention, described at least one first electrode layer and described at least one the second electrode lay distance each other are arranged at described separating tank adjustablely.
In compound field dewatering unit of the present invention, in described compound electric place, the strength of electric field of each electric field region increases progressively from bottom to top.
In compound field dewatering unit of the present invention, described at least one first electrode layer comprises at least one bare electrode layer and at least one the insulated electrode layer be electrically connected with described transformer, and described at least one bare electrode layer and described at least one insulated electrode layer coordinate at least one insulated electro place of formation and at least one naked electric field region with corresponding the second electrode lay.
In compound field dewatering unit of the present invention, described compound electric place comprises the weak insulated electro place arranged, strong insulated electro place, weak naked electric field region and strong naked electric field region from bottom to top.
In compound field dewatering unit of the present invention, described at least one bare electrode layer comprises the bare electrode that some parallel interval in the same plane are arranged, and described at least one insulated electrode layer comprises the insulated electrode that some parallel interval in the same plane are arranged.
In compound field dewatering unit of the present invention, described separating tank bottom comprises that described water district, water district comprises oil-water separation interface; Described at least one first electrode layer comprises and described oil-water separation interface insulated electrode layer across a certain distance mutually, and this insulated electrode layer coordinates formation insulated electro place with described oil-water separation interface.
In compound field dewatering unit of the present invention, each insulated electrode in described at least one insulated electrode layer and/or each bare electrode in the bare electrode layer all are fixed in separating tank by insulating suspension and/or insulating support rod; Each insulated electrode in described at least one insulated electrode layer and/or each bare electrode in the bare electrode layer all interconnect and are electrically connected by airtight terminal box and transformer in airtight terminal box; Described transformer provides AC power, DC pulse or alternating-current pulse to insulated electrode and/or bare electrode.
In compound field dewatering unit of the present invention, each described electrode layer comprises the electrode that some parallel interval in the same plane are arranged.
In compound field dewatering unit of the present invention, described crude oil inlet/outlet pipe comprises the oil inlet pipe that is located at the vertical setting of tank base or both ends horizontal setting and is located at the setting of tank body top vertical or the oil outlet pipe of both ends horizontal setting, described feed distributor is connected with oil inlet pipe and is positioned at the middle and lower part of separating tank, described oil header is connected and is positioned at the separating tank top with oil outlet pipe, makes to be arranged on the top that compound electric place between feed distributor and oil header is placed in separating tank.
The present invention compared with prior art has following advantage: the present invention adopts compound field, makes single equipment that the effect that compound field realizes profit is carried out stage trapping is set, and improves oily water separation efficiency, can save equipment volume, is conducive to promote the use simultaneously.
Electrode in the present invention adopts insulated electrode layer and/or bare electrode layer to form insulation electric field and/or naked electric field, uses the insulated electrode layer, can process any water content crude oil and avoids electric pole short circuit, improves device security and operation stability; Use the bare electrode layer, its strength of electric field is large, is conducive to accelerate the coalescent of moisture in crude oil, and the insulation electric field realizes with the cooperation of naked electric field the purpose that the crude oil highly effective and safe separates.
Between insulated electrode and/or bare electrode and transformer, use airtight terminal box to carry out wiring, make its wiring seal isolation, safe and reliable, the risk of minimizing electric pole short circuit.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of compound field dewatering unit of the present invention.
Fig. 2 is the electrode layer of the embodiment of the present invention 1 schematic diagram of arranging.
Fig. 3 is the electrode layer of the embodiment of the present invention 2 schematic diagram of arranging.
Fig. 4 is the electrode layer of the embodiment of the present invention 3 schematic diagram of arranging.
Fig. 5 is the electrode layer of the embodiment of the present invention 4 schematic diagram of arranging.
In figure: 1, separating tank; 2, access opening; 3, feed distributor; 4, electrode layer; 401, the first electrode layer; 402: the second electrode lay; 411: the insulated electrode layer; 412, bare electrode layer; 5, electric field region: 501: insulated electro polar region; 501A: weak insulated electro place; 501B: strong insulated electro place; 502: naked electric field region; 502A: weak naked electric field region; 502B: strong apterium; 6, airtight terminal box; 7, oil header; 8, transformer; 9, insulating suspension; 10, water shoot; 11, oil inlet pipe; 12, oil outlet pipe; 13, compound electric place; 14, water district; 14.1 oil-water separation interface.
Embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, the present invention discloses a kind of compound field dewatering unit, and this dewatering unit comprises horizontal cylinder type separating tank 1, and separating tank 1 two ends also are provided with access opening 2, are convenient to pipeline maintenance.Tank body is provided with transformer 8 outward, can adjust at any time the voltage of separating tank 1 interior powered electrode, to adjust strength of electric field.Tank base is provided with water shoot 10, for discharging the coalescent water settled down of crude oil.Also be provided with the crude oil inlet/outlet pipe on tank body, the crude oil inlet/outlet pipe is included in the oil inlet pipe 11 of the vertical setting of tank base or both ends horizontal setting and is located at the setting of tank body top vertical or the oil outlet pipe 12 of both ends horizontal setting.Also comprise the feed distributor 3, oil header 7 chargings that are connected with the crude oil inlet/outlet pipe in separating tank 1; Divider 3 is connected and is positioned at the middle and lower part of separating tank 1 with oil inlet pipe 11, oil header 7 is connected with oil outlet pipe 12 and is positioned at separating tank 1 top, be provided with the compound electric place 13 for profit is separated between feed distributor 3 and oil header 7, compound electric place 13 is placed in the top of separating tank 1, separating tank 1 bottom is provided with water district 14, be convenient to crude oil is carried out to the dewatering and desalting processing, avoid compound electric place 13 directly to contact with the crude oil of high-moisture simultaneously, moisture in crude oil causes the electric pole short circuit in compound field, causes potential safety hazard.
Compound electric place 13 comprises spaced apart several electrode layers 4 of in the vertical direction, each electrode layer 4 comprises the electrode (not shown) that some parallel interval in the same plane are arranged, electrode in same electrode layer 4 passes into by transformer 8 AC power, DC pulse or the alternating-current pulse that watt level is the same, makes some electrodes form integrated electrode layer 4.Several electrode layers 4 comprise the first electrode layer 401 that at least one and transformer 8 is electrically connected and the second electrode lay 402 of at least one ground connection, at least one the first electrode layer 401 and at least one the second electrode lay 402 cooperatively interact, form at least two electric field regions 5 of arranging at vertical direction, in this programme, several electrode layer 4 in the vertical direction intervals are arranged and made it form the electric field region 5 that vertical direction is arranged, making the electrical forces direction in electric field region 5 is vertical direction, by transformer 8, pass into AC power to the first electrode layer 401, when DC pulse or alternating-current pulse, moisture in crude oil produces upper and lower oscillation effect under the effect of electrical forces, when the moisture of vibration up and down coalescent while to its gravity, being greater than electrical forces, carry out sedimentation, thereby realize the purpose of oily water separation, therefore the action of gravity that the electric field region 5 of arranging up and down can utilize moisture in electrical forces and crude oil simultaneously than correlation technique adopt horizontally disposed electric field region only adopt electrical forces carry out oily water separation separating effect better, separation efficiency is higher.
The strength of electric field of each electric field region 5 in compound electric place 13 increases progressively from bottom to top, thereby protection can realize the stage trapping to high water-content crude oil in same separating tank 1, improves oily water separation efficiency, can save equipment volume, is conducive to promote the use simultaneously.At least one the first electrode layer 401 and at least one the second electrode lay 402 distance each other are arranged at separating tank 1 adjustablely, can be by regulating the strength of electric field apart from the electric field region 5 of adjusting its formation between the first electrode layer 401 and the second electrode lay 402, to realize the purpose to the high water-content crude oil high efficiency separation.
At least one first electrode layer 401 comprises at least one bare electrode layer 412 and at least one the insulated electrode layer 411 be electrically connected with transformer 8, at least one insulated electrode layer 411 comprises the insulated electrode (not shown) that some parallel interval in the same plane are arranged, insulated electrode is non-conductive, therefore the insulated electrode layer 411 of its formation can be processed any water content crude oil and avoid electric pole short circuit, improve device security and operation stability, usually insulated electrode floor 411 is located to 14 position, contiguous water district; At least one bare electrode layer 412 comprises the bare electrode (not shown) that some parallel interval in the same plane are arranged, the bare electrode conduction, therefore bare electrode floor 412 usually is located at the 14 position away from the water district when energising, in order to avoid the moisture in crude oil causes electrode breakdown, cause potential safety hazard; The pole strength of the electrode district 5 that uses the bare electrode layer to form is large, more is conducive to improve the oily water separation efficiency of the minimum crude oil of water content, guarantees its oil-water separation.At least one bare electrode layer 412 and at least one insulated electrode layer 411 coordinate formation at least one insulated electro place 501 and at least one naked electric field region 502 with corresponding the second electrode lay 402, in this programme, use insulated electro place 501 more can realize the purpose that the crude oil highly effective and safe separates with the cooperation of naked electric field region 502.At least one first electrode layer 401 comprise with water district 14 in oil-water separation interface 14. insulated electrode floor 411 across a certain distance mutually, this insulated electrode layer 411 coordinates formation insulated electro place 501 with oil-water separation interface 14.1, oil-water separation interface 14.1 is identical with the effect that the second electrode lay 402 of ground connection produces herein, coordinated insulation electrode layer 411 forms insulated electro place 501, in order to realize the oily water separation purpose.
Each insulated electrode and/or each bare electrode in bare electrode layer 412 in insulated electrode layer 411 all are fixed in separating tank 1 by insulating suspension 9 and/or insulating support rod (not shown), for avoiding rocking of offshore operation process oil tanker to cause between electrode occurring the problems such as short circuit, make whole Crude Oil at Sea recovery process more safe and reliable.Each insulated electrode in insulated electrode layer 411 and/or each bare electrode in bare electrode layer 412 all interconnect and are electrically connected by airtight terminal box 6 and transformer 8 in airtight terminal box 6, make the wiring seal isolation, safe and reliable, the risk of minimizing electric pole short circuit.Transformer 8 provides AC power, DC pulse or alternating-current pulse to insulated electrode 5 and/or bare electrode 4, so that moisture produces the effect of vibration up and down in electric field region, improves the effect of crude oil oily water separation.Insulated electrode layer 411 can share a transformer 8 with the receiving electrode of bare electrode layer 412, simplifies the operation; Also can adopt respectively independently transformer 8 to be powered to it, make the power supply adjusting of 8 pairs of insulated electrodes 5 of transformer and bare electrode 4 more flexible, can adjust in time relevant parameter according to the requirement of separating effect.
Each insulated electrode in insulated electrode layer 411 can be metal hollow rod or metal bar or the plate electrode that covers fine and close insulation layer, each bare electrode in bare electrode layer 412 can be metal hollow rod or metal bar plate electrode, preferably uses bar-shaped insulated electrode and bare electrode.Use bar-shaped insulated electrode and bare electrode, than tabular electroplax, can reduce in Oil extraction process at sea and acutely to rock due to oil tanker the damage that causes electrode.
While using this device to carry out the oily water separation processing to high water-content crude oil, the oil inlet pipe 11 of high water-content crude oil through being arranged on the vertical setting of tank base or both ends horizontal setting enters in separating tank 1, preferably from bottom, enters; The water district 14 by feed distributor 3, crude oil evenly spread between separating tank 1 bottom and feed distributor 3 is more fully washed, and remove portion moisture makes crude oil carry out initial gross separation; Enter compound electric place 13, the moisture in the crude oil of 13 pairs of compound electric places carries out multistage coalescent sedimentation and enters water district 14, by the water shoot 10 of tank base, moisture is discharged again; Crude oil after dehydration is discharged and is collected through the oil outlet pipe 12 that tank body vertically arranges or both ends horizontal arranges, thereby complete, high water-content crude oil is dewatered.
Compound electric place 13 comprises at least two-layer electric field region 5 in the weak insulated electro place 501A arranged, strong insulated electro place 501B, weak naked electric field region 502A and strong naked electric field region 502B from bottom to top.Insulated electro place 501 is that insulated electrode layer 411 or bare electrode layer 412 determine with naked electric field region 502 by the first electrode layer 401 with transformer 8 electric connections.The power of electric field region 5 is determined by the energising voltage of transformer 8 and the distance between each electrode layer 401 and the second electrode lay 402.In general, when two interelectrode distances are 200-220mm, when strength of electric field is 0.8-2.0KV/cm, be highfield; When two interelectrode distances are 500-540mm, it when strength of electric field is 0.3-0.5KV/cm, is weak electric field.Therefore can form the electric field regions 5 such as weak insulated electro place 501A, strong insulated electro place 501B, weak naked electric field region 502A that strength of electric field grows from weak to strong and strong naked electric field region 502B, to adapt to the multistage dehydration demand of different properties different moisture content crude oil, take full advantage of between limited electric field region, to reach multistage strengthen dewatering effect.
Embodiment 1: as shown in Figure 2, use the i.e. 1B in figure of one deck insulated electrode layer 411() with three layers of bare electrode layer 412(i.e. 1A, 1C and 1D in figure) vertically arrange and form three electric field regions 5.Specifically, the spacing arranged from bottom to top between electrode layer 4 is respectively 540mm, 200mm and 500mm.Using insulated electrode layer 1B and bare electrode layer 1D connection transformer 8 as the first electrode layer 401, bare electrode layer 1A and bare electrode layer 1C ground connection are as the second electrode lay 402, by transformer 8, DC pulse is provided to insulated electrode layer 1B and bare electrode layer 1D, and the adjustment service voltage, thereby form that strength of electric field from bottom to top increases progressively weak insulation electric field 501A, insulate electric field 501B and weak naked electric field 502A by force.Crude oil is after 14 initial gross separations of the water district of separating tank 1 bottom, and the weak insulation electric field 501A first increased progressively from bottom to top by strength of electric field, insulate electric field 501B and weak naked electric field 502A carries out multistage processed to it by force, with the purpose that realizes that highly effective and safe separates.
Embodiment 2: as shown in Figure 3, use the i.e. 2A in figure of one deck insulated electrode 411() with two layers of bare electrode layer 412(i.e. 2B and 2C in figure) vertically arrange, and coordinates three electric field regions 5 of formation with the oil-water separation interface 14.1 in water district 14.Specifically, the spacing that insulated electrode layer 2A and oil-water separation interface 14.1 are set is 510mm, and the spacing between insulated electrode layer 2A and bare electrode layer 2B is 220mm, and the spacing between bare electrode layer 2B and bare electrode layer 2C is 500mm.Using insulated electrode layer 2A with and bare electrode layer 2C connection transformer 8 as the first electrode layer 401, bare electrode layer 2B ground connection is as the second electrode lay 402, by transformer 8, AC power is provided and adjusts service voltage to insulated electrode layer 2A and bare electrode layer 2C, thereby make oil-water separation interface 14.1 in insulated electrode layer 2A and tank body form weak insulation electric field 501A, form strong insulation electric field 501B between insulated electrode layer 2A and bare electrode layer 2B, form weak naked electric field 502A between bare electrode layer 2B and bare electrode layer 2C.Crude oil after 14 initial gross separations of the water district of separating tank 1 bottom, successively strength of electric field increase progressively from bottom to top through weak insulation electric field 501A, insulate electric field 501B and weak naked electric field 502A carries out multistage processed to it by force, with the purpose that realizes that highly effective and safe separates.
Embodiment 3: as shown in Figure 4, use the i.e. 3B in figure of one deck insulated electrode layer 411() with four layers of bare electrode layer 412(i.e. 3A, 3C, 3D and 3E in figure) vertically be arranged to four electric field regions 5.Specifically, the spacing arranged from bottom to top between electrode layer 4 is respectively 520mm, 210mm, 500mm and 200mm, using insulated electrode layer 3B and bare electrode layer 3D connection transformer 8 as the first electrode layer 401, bare electrode layer 3A, bare electrode layer 3C and bare electrode layer 3E ground connection are as the second electrode lay 402, by transformer 8, DC pulse is provided to insulated electrode layer 1B and bare electrode layer 1D, and adjustment service voltage, thereby form the weak insulated electro place 501A that pole strength increases progressively from bottom to top, strong insulated electro place 501B, weak naked electric field region 502A and strong naked electric field region 502B.Crude oil is after 14 initial gross separations of the water district of separating tank 1 bottom, the weak insulated electro place 501A first increased progressively from bottom to top by strength of electric field, strong insulated electro place 501B, weak naked electric field region 502A and strong naked electric field region 502B carry out multistage processed to it, with the purpose that realizes that highly effective and safe separates.
Embodiment 4: as shown in Figure 5, use the i.e. 4A in figure of one deck insulated electrode layer 411() with three layers of bare electrode layer 412(i.e. 4B, 4C and 4D in figure) vertically arrange, and coordinates four electric field regions 5 of formation with the oil-water separation interface 14..1 in water district 14.Specifically, the spacing arranged between insulated electrode layer 4A and oil-water separation interface 14.1 is 520mm, the spacing arranged from bottom to top between electrode layer is respectively 200mm, 500mm and 210mm, by transformer 8 connection insulated electrode layer 4A and bare electrode layer 4C, make it as the first electrode layer 401, bare electrode layer 4B and bare electrode layer 4D ground connection are as the second electrode lay 402, transformer 8 provides alternating-current and adjusts its voltage to insulated electrode layer 4A and bare electrode layer 4C, thereby make oil-water separation interface 14.1 in insulated electrode layer 4A and tank body form weak insulation electric field 501A, form between insulated electrode layer 4A and bare electrode layer 4B between strong insulation electric field 501B and bare electrode layer 4B and bare electrode layer 4C and form weak naked electric field 502A, form strong naked electric field 502B between bare electrode layer 4C and bare electrode layer 4D.Crude oil is after 14 initial gross separations of the water district of separating tank 1 bottom, the weak insulation electric field 501A first increased progressively from bottom to top by strength of electric field) the electric field 501B that insulate by force, weak naked electric field 502A and strong naked electric field 502B carry out multistage processed to it, with the purpose that realizes that highly effective and safe separates.
In above-described embodiment, but distance based on crude character and water content flexible between each electrode layer 5, and wherein insulated electrode layer 411 can not be subject to the impact that water content in crude oil changes, and itself and other interelectrode spacing is arranged convenient flexible.Use compound field in device, achieve the effect of multistage oily water separation, improve oily water separation efficiency, also reduction equipment volume simultaneously, conveniently exploit in Crude Oil at Sea.But electric field equipment and voltage are supplied with based on crude character and change of moisture content flexible, meet different crude oils separating treatment demand.
The present invention describes by several specific embodiments, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, for particular condition or particular case, can make various modifications to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole embodiments that fall in the claims in the present invention scope.
Claims (10)
1. a compound field dewatering unit, comprise separating tank (1), crude oil inlet/outlet pipe, water shoot (10), feed distributor (3), oil header (7) and transformer (8), crude oil inlet/outlet pipe and water shoot (10) are located on tank body, and feed distributor (3) and oil header (7) are located in tank and are connected with the crude oil inlet/outlet pipe, transformer (8) is located at outside tank body, it is characterized in that: between feed distributor (3) and oil header (7), be provided with the compound electric place (13) for profit is separated, described compound electric place (13) comprises spaced apart several electrode layers of in the vertical direction (4), described several electrode layers (4) comprise the first electrode layer (401) that at least one and described transformer (8) are electrically connected and the second electrode lay (402) of at least one ground connection, described at least one first electrode layer (401) and described at least one the second electrode lay (402) cooperatively interact, form at least two electric field regions (5) of arranging at vertical direction.
2. compound field dewatering unit according to claim 1 is characterized in that: described at least one first electrode layer (401) and described at least one the second electrode lay (402) distance each other are arranged at described separating tank (1) adjustablely.
3. compound field dewatering unit according to claim 1, it is characterized in that: in described compound electric place (13), the strength of electric field of each electric field region (5) increases progressively from bottom to top.
4. compound field dewatering unit according to claim 1, it is characterized in that: described at least one first electrode layer (401) comprises at least one bare electrode layer (412) and at least one the insulated electrode layer (411) be electrically connected with described transformer (8), and described at least one bare electrode layer (412) and described at least one insulated electrode layer (411) coordinate at least one insulated electro place (501) of formation and at least one naked electric field region (502) with corresponding the second electrode lay (402).
5. compound field dewatering unit according to claim 4 is characterized in that: described compound electric place (13) comprises the weak insulated electro place (501A) arranged, strong insulated electro place (501B), weak naked electric field region (502A) and strong naked electric field region (502B) from bottom to top.
6. compound field dewatering unit according to claim 4, it is characterized in that: described at least one bare electrode layer (412) comprises the bare electrode that some parallel interval in the same plane are arranged, and described at least one insulated electrode layer (411) comprises the insulated electrode that some parallel interval in the same plane are arranged.
7. according to the described compound field dewatering unit of claim 1 to 6 any one, it is characterized in that: described separating tank (1) bottom comprises water district (14), and described water district (14) comprises oil-water separation interface (14.1); Described at least one first electrode layer (401) comprises and described oil-water separation interface (14.1) insulated electrode layer (411) across a certain distance mutually, and this insulated electrode layer (411) coordinates formation insulated electro place (501) with described oil-water separation interface (14.1).
8. according to the described compound field dewatering unit of claim 4 to 6 any one, it is characterized in that: each insulated electrode and/or each bare electrode in bare electrode layer (412) in described at least one insulated electrode layer (411) all are fixed in separating tank (1) by insulating suspension (9) and/or insulating support rod; Each insulated electrode in described at least one insulated electrode layer (411) and/or each bare electrode in bare electrode layer (412) all interconnect and are electrically connected by airtight terminal box (6) and transformer (8) in airtight terminal box (6); Described transformer (8) provides AC power, DC pulse or alternating-current pulse to insulated electrode (5) and/or bare electrode (4).
9. according to the described compound field dewatering unit of claim 1 to 6 any one, it is characterized in that: each described electrode layer (4) comprises the electrode that some parallel interval in the same plane are arranged.
10. according to the described compound field dewatering unit of claim 1 to 6 any one, it is characterized in that: described crude oil inlet/outlet pipe comprises the oil inlet pipe (11) that is located at the vertical setting of tank base or both ends horizontal setting and is located at the setting of tank body top vertical or the oil outlet pipe (12) of both ends horizontal setting, described feed distributor (3) is connected and is positioned at the middle and lower part of separating tank (1) with oil inlet pipe (11), described oil header (7) is connected with oil outlet pipe (12) and is positioned at separating tank (1) top, make to be arranged on the top that compound electric place (13) between feed distributor (3) and oil header (7) is placed in separating tank (1).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105219429A (en) * | 2014-06-19 | 2016-01-06 | 中石化洛阳工程有限公司 | A kind of high water-content crude oil separation method |
| CN106318442A (en) * | 2016-08-19 | 2017-01-11 | 中石化炼化工程（集团）股份有限公司 | Sump oil purifying device and method |
| CN114989859A (en) * | 2022-05-05 | 2022-09-02 | 中国石油化工股份有限公司 | Apparatus and method for dewatering crude oil containing water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105219429A (en) * | 2014-06-19 | 2016-01-06 | 中石化洛阳工程有限公司 | A kind of high water-content crude oil separation method |
| CN106318442A (en) * | 2016-08-19 | 2017-01-11 | 中石化炼化工程（集团）股份有限公司 | Sump oil purifying device and method |
| CN106318442B (en) * | 2016-08-19 | 2018-06-26 | 中石化炼化工程（集团）股份有限公司 | A kind of sump oil purification processing unit and purifying treatment method |
| CN114989859A (en) * | 2022-05-05 | 2022-09-02 | 中国石油化工股份有限公司 | Apparatus and method for dewatering crude oil containing water |
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|---|---|
| CN103450927B (en) | 2015-08-12 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC (China) Co., Ltd. Shenzhen Branch Patentee after: China Offshore Oil Group Co., Ltd. Address before: China CNOOC Building No. 25 Beijing 100010 Dongcheng District Chaoyangmen North Street China CNOOC Oil Corporation, the Ministry of science and technology development Co-patentee before: CNOOC (China) Co., Ltd. Shenzhen Branch Patentee before: China National Offshore Oil Corporation |