CN108728158A - Wet crude separator and method and three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank - Google Patents
Wet crude separator and method and three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank Download PDFInfo
- Publication number
- CN108728158A CN108728158A CN201710242445.4A CN201710242445A CN108728158A CN 108728158 A CN108728158 A CN 108728158A CN 201710242445 A CN201710242445 A CN 201710242445A CN 108728158 A CN108728158 A CN 108728158A
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- Prior art keywords
- tank body
- emulsion
- demulsifier
- delivery line
- wet crude
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Classifications
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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
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
-
- 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
-
- 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
- C10G33/08—Controlling or regulating
Abstract
The present invention relates to wet crude separation fields, and in particular, to wet crude separator and method and three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank.The wet crude separator of the present invention, including tank body, optional interface instrument, emulsion demulsification export component, emulsion demulsification export component include：First emulsion delivery line, the second emulsion delivery line, demulsifier ingress pipe and demulsifier distributor pipe.The invention further relates to the methods of wet crude separation, are related to three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank.The wet crude separator and method of the present invention can remove the intractable emulsion in wet crude separating technology in each equipment while improving oil-water separation, it ensure that the safety of wet crude separating technology, production cost is reduced, productivity effect is improved.
Description
Technical field
The present invention relates to wet crude separation fields, and in particular, to a kind of wet crude separator and method and
Three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank.
Background technology
It is between an oil layer and a water layer emulsification liquid layer when the fields such as petroleum and petrochemical industry detach grease.It emulsifies in liquid layer
Emulsion You Heshui is separated into after demulsification, and respectively enter oil reservoir and water layer.But it can usually encounter oil water mixture shape
The case where at the intractable emulsion being stabilized.This part intractable emulsion (dispersed phase drop diameter is less than 50 μm) is dividing
Exist from long-time stable in container, it is difficult to be separated into You Heshui.
The factors such as effect and residence time, temperature and the drug concentration of emulsion demulsification are related.Residence time is longer, temperature
The more high usual demulsification of higher, drug concentration is better.
Influence of the obstinate emulsion to demulsification is mainly reflected in the following aspects：
(1) gravity settling separation equipment is usually to export oil from top, and water is exported from lower part.The proportion of emulsion between
Between oil and water, it is difficult to be exported completely from top or lower part by gravity.And constantly accumulation in process of production, accounts for
Volume is detached with equipment, the oil water mixture residence time reduces, and separating effect is caused to be deteriorated；
(2) demulsifier usually addition enters separation equipment with liquid is carried out, can not reach higher in emulsion layer in vessel inlet
Drug concentration；
(3) after a large amount of existing obstinate emulsions gather in electric dehydrator, polar plate position is easily reached, transformer efficiency is made
It is excessive, burn transformer；
(4) emulsion in actual production carries a large amount of impurity, influences measurement of the interface instrument to oil-water interfaces, causes grease
Interface fluctuation is big, influences normally to produce.
However, there is no technical solutions derived from consideration emulsion for the prior art, or even directly ignore emulsion at all
Problem.Such as patent application CN105219429A, when considering water-oil separating, there is no in view of emulsion is to water-oil separating
It influences.Remaining separation equipment is also usually to export oil, water respectively, does not consider the problems of intractable emulsion.It is stupid to solve
The problem of solidity emulsion, the scheme that patent application CN103239892A is used are will purify oil to export, but also can not be thorough
Solve the problems, such as wherein intractable emulsion accumulation.
Therefore, it is badly in need of a kind of wet crude separator that can be detached and export intractable emulsion and method now.
Invention content
The purpose of the invention is to overcome in the prior art intractable emulsion long-term existence cause separation equipment to occur
The defect of various problems provides a kind of wet crude separation that can be efficiently separated wet crude and can export intractable emulsion
Device and method and three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank.
Therefore, to achieve the goals above, in a first aspect, the present invention provides a kind of wet crude separator, the dress
It sets including tank body, optional interface instrument, the emulsion demulsification export component being arranged in tank body and is arranged on tank wall
Wet crude entrance, oil export and water out, the emulsion demulsification export component include：First emulsion delivery line, second
Emulsion delivery line, demulsifier ingress pipe and demulsifier distributor pipe, the demulsifier ingress pipe are connected with demulsifier distributor pipe,
It is provided with the first hole on the demulsifier distributor pipe so that the demulsifier from demulsifier ingress pipe disperses through first hole
In emulsifying in liquid layer；The first emulsion delivery line and the second emulsion delivery line are connected, the first emulsion export
The second hole is provided on pipe so that emulsion remaining after demulsification through the second emulsion delivery line export tank body outside, institute
Interface instrument is stated for detecting the height of tank body internal emulsification liquid layer to control the export of emulsion.
Second aspect, the present invention provides a kind of method of wet crude separation, this method includes：
Wet crude containing demulsifier is passed through through wet crude entrance in tank body, is made in gravity and/or electric field
Under so that wet crude is at least separated into water phase and oil phase, and the water phase is exported via water out outside tank body, the oil phase warp
Outside by oil export export tank body, the height of tank body internal emulsification liquid layer is detected by interface instrument, when the height of tank body internal emulsification liquid layer
When reaching the 5~45% of tank diameter, demulsifier is imported by demulsifier ingress pipe and demulsifier distributor pipe and makes its dispersion
In emulsifying in liquid layer, when the height of tank body internal emulsification liquid layer reaches the 5~15% of tank diameter, and it is passed through demulsifier emulsion again
For the height of layer when no longer changing, stopping is passed through demulsifier, will be through by the first emulsion delivery line and the second emulsion delivery line
After demulsification outside remaining emulsion export tank body.
The third aspect, the present invention provides a kind of three phase separation equipment, which includes above-mentioned wet crude separator,
The three phase separation equipment is horizontal type structure, and the tank body is along the cambered surface that the end walls of its axis direction are protrusion outward.
Fourth aspect, the present invention provides a kind of free water removal equipment, which includes above-mentioned wet crude separation dress
It sets, the free water removal equipment is horizontal type structure, and the tank body is along the arc that the end walls of its axis direction are protrusion outward
Face.
5th aspect, the present invention provides a kind of electro-dewatering apparatus, which includes above-mentioned wet crude separator, institute
It is horizontal type structure to state electro-dewatering apparatus, and the tank body is along the cambered surface that the end walls of its axis direction are protrusion outward.
6th aspect, the present invention provides a kind of settling tank, which includes above-mentioned wet crude separator, described heavy
Drop tank is vertical structure, and the upper end wall of the tank body is vault, and lower end wall is plane.
The prior art only adds demulsifier in the entrance of separation equipment, and demulsifier enters behind equipment inside with wet crude
Even distribution can not realize the region of high concentration inside equipment, and therefore, intractable emulsion can not efficiently separate discharge, for a long time
Occupy equipment inner space.In the present invention, by the way that demulsifier distributor pipe is arranged in wet crude separator, by thereon
First hole makes the demulsifier from demulsifier ingress pipe be scattered in emulsification liquid layer, so as to form intractable emulsion
Region realize emphasis dosing, form topical agent high concentration region, improve demulsification；Also, it is exported in the first emulsion
The second hole is provided on pipe so that can not the intractable emulsion of break milk separation smoothly export, avoid intractable
Emulsion occupies space in separation equipment and causes wet crude residence time in tank body shorter for a long time.In addition, the present invention
Wet crude separator can be used for various separation equipments, such as three phase separation equipment, free water removal equipment, electric dehydration are set
Standby, settling tank etc. can remove stupid in each equipment in wet crude separating technology while improving oil-water separation
Solidity emulsion ensure that the safety of wet crude separating technology, reduce production cost, improves productivity effect.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of the wet crude separator of specific implementation mode of the present invention；
Fig. 2 is a kind of schematic diagram of the three phase separation equipment of specific implementation mode of the present invention；
Fig. 3 is a kind of schematic diagram of the free water removal equipment of specific implementation mode of the present invention；
Fig. 4 is a kind of schematic diagram of the electro-dewatering apparatus of specific implementation mode of the present invention；
Fig. 5 is the schematic diagram of the electro-dewatering apparatus of another specific implementation mode of the present invention；
Fig. 6 is a kind of schematic diagram of the settling tank of specific implementation mode of the present invention；
Fig. 7 is a kind of schematic diagram of the concentric tubes of specific implementation mode of the present invention；
Fig. 8 is the first emulsion delivery line and demulsifier distributor pipe relative position of a kind of specific implementation mode of the present invention
Schematic diagram.
Reference sign
1 tank body
2 interface instruments
3 emulsions demulsification export component
301 first emulsion delivery line, 3,011 second hole, 302 second emulsion delivery line
303 demulsifier ingress pipe, 304 3,041 first hole of demulsifier distributor pipe, 305 fixed component
4 in-line analyzers
5 plate washers
The 4th water outs of A1 the first water out A2 the second water out A3 third water outs A4
The 4th oil exports of B1 the first oil export B2 the second oil export B3 third oil exports B4
C1 the first wet crude entrance C2 the second wet crude entrance C3 third wet crude entrances C4 the 4th contains
Water crude oil entrance
D gas vents
Specific implementation mode
The specific implementation mode of the present invention is described in detail below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of wet crude separators, as shown in Figure 1, the device includes tank body 1, optional interface
Wet crude entrance, the oil export that instrument 2, the emulsion being arranged in tank body demulsification export component 3 and be arranged on tank wall
And water out, the emulsion demulsification export component 3 include：First emulsion delivery line 301, the second emulsion delivery line 302,
Demulsifier ingress pipe 303 and demulsifier distributor pipe 304, the demulsifier ingress pipe 303 are connected with demulsifier distributor pipe 304,
The first hole 3041 is provided on the demulsifier distributor pipe 304 so that described in the demulsifier warp from demulsifier ingress pipe 303
First hole is scattered in emulsification liquid layer；The first emulsion delivery line 301 is connected with the second emulsion delivery line 302, institute
It states and is provided with the second hole 3011 on the first emulsion delivery line 301 so that emulsion remaining after demulsification is through second breast
Change liquid delivery line 302 to export outside tank body 1, the interface instrument 2 is used to detect the height of 1 internal emulsification liquid layer of tank body to control emulsion
Export.
In the present invention, remaining emulsion refers to intractable emulsion after demulsification.
In the present invention, the tank body 1 can be variously-shaped tank body, such as can be cylindrical tank body.
Device according to the present invention, wet crude separator may include interface instrument 2, can not also include interface
Instrument 2 preferably includes interface instrument 2, so as to improve the accuracy of emulsification height of liquid layer detection, and then more accurately controls stubbornness
Opportunity derived from property emulsion.When wet crude separator does not include interface instrument 2, can be examined in such a way that other are conventional
The height of 1 internal emulsification liquid layer of tank body is surveyed, such as draws pipeline respectively in tank body different height and valve is set, it is different by observing
Height pipeline releases the character of liquid to be judged, and then realizes purpose derived from control intractable emulsion.Also can pass through
The transparent window being arranged on tank body is observed and is judged.
Device according to the present invention is readily applied in order to enable emulsion demulsification export component 3 has globality
Various types of separation equipments, it is preferable that the second emulsion delivery line 302 is concentric tubes with demulsifier ingress pipe 303,
The concentric tubes are along the radial setting of tank body 1；In a specific embodiment, the concentric tubes are fixed on 1 side wall of tank body
On.In another embodiment specific implementation mode, the concentric tubes are fixed on 1 end wall of tank body.In the present invention, " side wall " refers to
When the shape of tank body is the cylinder that at least one end face is cambered surface raised outward, it is parallel to the tank skin of tank body axial direction,
" end wall " refers to the end face of tank body, which can be raised cambered surface and optional plane outward." end in the present invention
Wall " may be used interchangeably as the meaning of " end face ".
At least 1 set of emulsion demulsification leading-out portion can be arranged in device according to the present invention, wet crude separator
Part 3, specifically, the quantity of emulsion demulsification export component 3 can be determined according to the needs of practical application, such as can be by breast
Change the institutes such as the size of liquid demulsification export component 3 and the wet crude separation equipment applied and the property of wet crude to be separated
It determines.
Device according to the present invention, when being provided with more set emulsion demulsification export components 3 in tank body, more set emulsifications
Liquid demulsification export component 3 can be spaced setting, as long as ensureing the first emulsion export in more set emulsion demulsification export components 3
Pipe 301 is completely in emulsification liquid layer.
The quantity of device according to the present invention, concentric tubes can be at least one.Preferably, 1 emulsion demulsification
It includes 1 concentric tubes to export component 3.
Device according to the present invention, it is preferable that the first emulsion delivery line 301 and demulsifier distributor pipe 304
It is parallel to the axial setting of tank body 1.Due to being limited by the height of emulsification liquid layer, it is further preferred that first emulsion is led
Outlet pipe 301 and demulsifier distributor pipe 304 are along 1 radially adjacent setting of tank body.
Device according to the present invention, as shown in fig. 7, the second emulsion delivery line 302 and demulsifier ingress pipe
303 be concentric tubes, since general demulsifier dosage is much smaller than the volume of emulsion, inner tube is demulsifier ingress pipe
303, outer tube is the second emulsion delivery line 302.Usually, the material of demulsifier ingress pipe 303 can be stainless steel, the second breast
The material for changing liquid delivery line 302 can be ordinary carbon steel.
Device according to the present invention, by taking horizontal tank body as an example, as shown in figure 8, can be according to the property of demulsifier not
With determining the relative position of the first emulsion delivery line 301 and demulsifier distributor pipe 304.Such as when demulsifier is oil-in-water type
When demulsifier, as shown in Figure 8 a, the first emulsion delivery line 301 and demulsifier distributor pipe 304 are along the radial position of tank body 1：
First emulsion delivery line 301 and the neighbouring water phase of demulsifier distributor pipe 304 are arranged, and the first emulsion delivery line 301 is located at
The top of demulsifier distributor pipe 304.When demulsifier is water-in-oil type demulsifier, as shown in Figure 8 b, the first emulsion delivery line
301 and demulsifier distributor pipe 304 be along the radial position of tank body 1：First emulsion delivery line 301 and demulsifier distributor pipe 304
Neighbouring oil phase is arranged, and the first emulsion delivery line 301 is located at the lower section of demulsifier distributor pipe 304.Wherein, tank body is vertical
When, the phase the case where relative position and the horizontal tank body of foregoing description of the first emulsion delivery line 301 and demulsifier distributor pipe 304
Seemingly, unlike, the relative position of the first emulsion delivery line 301 and demulsifier distributor pipe 304 is referred to along 1 axial direction of tank body
Relative position.
Device according to the present invention, water-in-oil type demulsifier are the various conventional water-in-oil type demulsifiers in this field,
Such as can be at least one of polyoxy alkylol, polyoxy alkyl polyamine and polyoxy alkyl resin, but it is not limited to this.Its
In, polyoxy alkylol surfactant for example can be SP169, BP2040, and polyoxy alkyl polyamine surfactant for example can be with
For at least one of AP221, AP134, AE121 and AE8051, polyoxy alkyl resin surfactant for example can be
TA1031。
Device according to the present invention, oil-in-water type demulsifier are the various conventional oil-in-water type demulsifications in this field
Agent, such as can be broken for electrolytes demulsifier, low molecule alcohol demulsifier, surfactant-based demulsifier, polymerization species
At least one of emulsion, but it is not limited to this.Wherein, electrolytes demulsifier for example can be hydrochloric acid, sodium chloride,
At least one of magnesium chloride, calcium chloride and aluminum nitrate, low molecule alcohol demulsifier for example can be methanol, ethyl alcohol, third
At least one of alcohol, hexanol and enanthol, surfactant-based demulsifier for example can be C14H29(CH3)3NCl、 In extremely
Few one kind, polymerization species demulsifier for example can beAnd RO-
(EO)nAt least one of-H, wherein EO is oxyethylene group, and R is saturated or unsaturated C12~C18Alkyl, can be with
It is straight-chain alkyl, can also be branched alkyl.
Device according to the present invention, the quantity of the first emulsion delivery line 301 are at least 1, such as can be with
It it is 1~4, when the quantity of the first emulsion delivery line 301 is 2 or 2 or more, it is preferable that first emulsion
Delivery line 301 is uniformly arranged in 1 axial direction of tank body.
The quantity of device according to the present invention, demulsifier distributor pipe 304 is at least 1, such as can be 1~4,
When the quantity of demulsifier distributor pipe 304 is 2 or 2 or more, it is preferable that the demulsifier distributor pipe 304 is in 1 axis of tank body
It is uniformly arranged upwards.
In the preferred embodiment of the present invention, there is 1 concentric tubes, tool in emulsion demulsification export component 3
There are 2 or 2 or more the first emulsion delivery lines 301 and demulsifier distributor pipe 304.
In the preferred embodiment of the present invention, the first emulsion delivery line 301 and demulsifier distributor pipe 304
Projection in 1 axial direction of tank body has angle, it is highly preferred that the angle is 30~90 degree (preferably 45~90 degree), to
Can extend through the first hole 3041 on demulsifier distributor pipe 304 be scattered in emulsification liquid layer in demulsifier in emulsifying liquid layer
Residence time, and then significantly improve the demulsification to intractable emulsion.
Device according to the present invention, when the first emulsion delivery line 301 and demulsifier distributor pipe 304 are in tank body
When projection in 1 axial direction does not have angle, derived demulsifier may be exported directly by the first emulsion in the first hole 3041
The second hole 3011 export on pipe 301 emulsifies intractable to cause the shorter in the residence time of emulsification liquid layer of demulsifier
The demulsification of liquid is bad.In this embodiment, the demulsifier in order to prevent in the first hole 3041 out directly passes through first
The second hole 3011 export on emulsion delivery line 301, needs to accurately control the first hole being arranged on demulsifier distributor pipe 304
3041 and first be provided on emulsion delivery line 301 second hole 3011 opening direction, therefore, in the specific implementation mode
The set-up mode of equipment is not easy to control, and operability is poor in actual production.If ignoring the complexity of time cost and setting
Property, only consider demulsification, which can also be used as a kind of alternative.
Device according to the present invention, the device can also include：Fixed component 305, the fixed component 305 make
The first emulsion delivery line 301 and the demulsifier distributor pipe 304 along tank body 1 it is radially displaceable be connected with concentric tubes
It is logical.In the present invention, the first emulsion delivery line 301 and the demulsifier distributor pipe 304 can be with along the radial position of tank body 1
Change with the variation of emulsification liquid layer position.In the preferred embodiment for the present invention, " radially displaceablely along tank body 1 " actually
Refer to that the first emulsion delivery line 301 and the demulsifier distributor pipe 304 are removable along concentric tubes.
Device according to the present invention, the device are also provided with motor, for being the first emulsion delivery line 301
The power of lifting is moved radially and provided along tank body 1 with the demulsifier distributor pipe 304.
Device according to the present invention, as shown in Figure 1, in a specific embodiment, being filled when wet crude detaches
When setting including interface instrument 2, the interface instrument 2 is arranged on tank wall.As shown in fig. 6, in another embodiment specific implementation mode,
When wet crude separator includes interface instrument 2, the interface instrument 2 is arranged on tank body end wall.
Device according to the present invention, it is preferable that the device further includes：It is arranged online on emulsion discharge pipe
Analyzer 4, for monitoring the oil-water ratio in derived emulsion in real time to determine end time derived from emulsion.
Device according to the present invention is also provided with automatic valve on emulsion discharge pipe, the automatic valve
It can be closed by the analysis result of in-line analyzer 4.Wherein, the automatic valve can be the various automatic valves in this field
Door, such as can be solenoid valve.The pipeline with transparent window can also be used, by the character of liquid in observation window, manually
Control valve is operated.
Device according to the present invention, it is preferable that lay in the first hole 3041 on the demulsifier distributor pipe 304
It sets, to be more advantageous to dispersion of the demulsifier in emulsification liquid layer, and then significantly improves the demulsification to intractable emulsion.
Device according to the present invention, it is preferable that the second hole 3011 on the first emulsion delivery line 301 is uniformly distributed
Setting, to be more advantageous to the export of intractable emulsion.
Device according to the present invention does not have the shape in hole, the quantity in hole in the first hole 3041 and the second hole 3011
Special limitation.In addition, the pore size in the first hole 3041 can be determined according to the size of 304 caliber of demulsifier distributor pipe,
Similarly, the pore size in the second hole 3011 can be determined according to the size of 301 caliber of the first emulsion delivery line.
The end of device according to the present invention, emulsion discharge pipe is preferably provided with compression pump, in favor of stubbornness
The export of property emulsion.
Second aspect, the present invention provides a kind of method of wet crude separation, this method includes：
Wet crude containing demulsifier is passed through through wet crude entrance in tank body, is made in gravity and/or electric field
Under so that wet crude is at least separated into water phase and oil phase, and the water phase is exported via water out outside tank body, the oil phase warp
Outside by oil export export tank body, the height of 1 internal emulsification liquid layer of tank body is detected by interface instrument 2, when the height of 1 internal emulsification liquid layer of tank body
When degree reaches the 5~45% of 1 diameter of tank body, demulsifier is imported simultaneously by demulsifier ingress pipe 303 and demulsifier distributor pipe 304
So that it is scattered in emulsification liquid layer, when the height of 1 internal emulsification liquid layer of tank body reaches the 5~15% of 1 diameter of tank body, and is passed through brokenly again
When the height of emulsion emulsification liquid layer no longer changes, stopping is passed through demulsifier, is emulsified by the first emulsion delivery line 301 and second
Liquid delivery line 302 will be outside emulsion export tank body 1 remaining after demulsification.
Method according to the present invention, when the height of 1 internal emulsification liquid layer of tank body reaches the 5~15% of 1 diameter of tank body,
Demulsifier is imported by demulsifier ingress pipe 303 and demulsifier distributor pipe 304 and it is made to be scattered in emulsification liquid layer, so as to
It is enough to detach in time and intractable emulsion is discharged, and then avoid a large amount of intractable emulsions from being gathered in electrically separated equipment and reach
Polar plate position and cause transformer efficiency is excessive to burn.
Method according to the present invention, when the height of 1 internal emulsification liquid layer of tank body reaches the 10~15% of 1 diameter of tank body,
And it is passed through the height of demulsifier emulsification liquid layer again when no longer changing, stopping is passed through demulsifier, to further avoid demulsifier
Waste, significantly improves the utilization rate of demulsifier, and can also accurately judge the opportunity for starting to export intractable emulsion.
Method according to the present invention, it is preferable that this method further includes：Pass through the monitoring export in real time of in-line analyzer 4
Emulsion in oil-water ratio to determine end time derived from emulsion, so as to accurately judge that derived from emulsion
End time.It is highly preferred that when the oil-water ratio in derived emulsion is 1：When 0.1~0.25, stop export emulsion.
Method according to the present invention, wet crude can be the various wet crudes in this field, such as the wet crude
Oil content be 3~97%, corresponding water content be 3~97%.The concentration of demulsifier can be ability in wet crude
The concentration of the various conventional demulsifiers in domain, according to the property of demulsifier and type be different and the water-oil factors of wet crude not
Together, the concentration of demulsifier is also different, can be in broad range, such as can be 0.001~0.02 weight %.
Method according to the present invention, the type of demulsifier is as described above, details are not described herein.Containing containing demulsifier
Residence time of the water crude oil in tank body can be arranged according to the difference of tank body size, the property for the temperature and wet crude of being demulsified
And the correlations such as residence time, it can determine according to actual needs.
The third aspect, the present invention provides a kind of three phase separation equipment, as shown in Fig. 2, the equipment includes above-mentioned aqueous original
Oil separating device, the three phase separation equipment are horizontal type structure, and the tank body 1 is convex outward along the end walls of its axis direction
The cambered surface risen.
Three phase separation equipment according to the present invention, the end walls of three phase separation equipment are specifically as follows hemispherical, ellipse
The end socket of the shapes such as circle, dish.
Three phase separation equipment according to the present invention, in order to facilitate the installation of, it is preferable that concentric tubes are fixed on tank body 1
On side wall.
Three phase separation equipment according to the present invention, when wet crude separator includes interface instrument 2, the interface
Instrument 2 can be arranged on 1 side wall of tank body.
Three phase separation equipment according to the present invention is provided with above-mentioned wet crude separator in the equipment, other
Component is the conventional components of this field three phase separation equipment, such as the equipment can also include：Tank interior is parallel to tank body
The plate washer 5 being arranged on axial side wall, the radial direction for being oriented parallel to tank body of the plate washer 5.
Three phase separation equipment according to the present invention, the equipment can also include：It is arranged and is being parallel to tank body axial direction
Gas vent D on side wall.
The water out of the equipment is known as the first water out A1, oil export by three phase separation equipment according to the present invention
Referred to as the first oil export B1, the first water out A1 and the first oil export B1 is arranged on the side wall opposite with gas vent D.
The wet crude entrance of the equipment is known as the first wet crude and entered by three phase separation equipment according to the present invention
Mouth C1, the first wet crude entrance C1 can be the various conventional three phase separator entrances in this field.Such as it may refer to document
ENGINEERING DATA BOOK (2012 the 13rd edition) published by Gas Processors Suppliers Association
The set-up mode of Fig. 7-33 and Fig. 7-34 entrances is configured in 7-24 pages.
Three phase separation equipment according to the present invention, the plate washer 5 by the first water out A1 and the first oil export B1 every
It opens, and the first water out A1 and wet crude entrance C1 be in the side of plate washer 5, and the first oil export B1 is in the other side of plate washer 5.
Three phase separation equipment according to the present invention, concentric tubes are fixed on 1 side wall of tank body, and are arranged in plate washer 5
Close to the first sides water out A1.
Fourth aspect, the present invention provides a kind of free water removal equipment, as shown in figure 3, the equipment includes above-mentioned aqueous
Crude separating device, the free water removal equipment are horizontal type structure, and the tank body 1 is outside along the end walls of its axis direction
The cambered surface of side protrusion.
Free water removal equipment according to the present invention, in order to facilitate the installation of, it is preferable that concentric tubes are fixed on tank body
On 1 side wall.
Free water removal equipment according to the present invention, when wet crude separator includes interface instrument 2, the boundary
Face instrument 2 can be arranged on tank wall.
Free water removal equipment according to the present invention is provided with above-mentioned wet crude separator in the equipment,
Its component is the conventional components of this field free water removal equipment, and details are not described herein, and those skilled in the art can root
It is obtained according to common knowledge.
The water out of the equipment is known as the second water out A2 by free water removal equipment according to the present invention, and oil goes out
Mouth is known as the second oil export B2, and wet crude entrance is known as the second wet crude entrance C2, wherein the second wet crude entrance C2
The same side wall in tank body 1 can be set with the second oil export B2, the second water out A2 is arranged on another side wall.
5th aspect, the present invention provides a kind of electro-dewatering apparatus, which includes above-mentioned wet crude separator, institute
It is horizontal type structure to state electro-dewatering apparatus, and the tank body 1 is along the cambered surface that the end walls of its axis direction are protrusion outward.
Electro-dewatering apparatus according to the present invention, it is preferable that in order to facilitate the installation of, it is preferable that concentric tubes are fixed on
On 1 side wall of tank body.
Electro-dewatering apparatus according to the present invention, when wet crude separator includes interface instrument 2, the interface instrument
2 can be arranged on tank wall.
As shown in figure 4, in a specific embodiment, the wet crude entrance of the equipment is known as third wet crude
Entrance C3, oil export are known as third oil export B3, and water out is known as third water out A3, and the third wet crude entrance C3 is set
It sets on the side wall of tank body 1, and the third wet crude entrance C3 can be multiple, such as can be two, this two the
Three wet crude entrance C3 can also be in opposite both sides in homonymy.The third oil export B3 is arranged aqueous with third
On the side wall of tank body 1 opposite crude oil entrance C3.Wherein, the third water out A3 can be arranged in third wet crude entrance
The sides C3 can also be arranged in the sides third oil export B3.
As shown in figure 5, in another embodiment specific implementation mode, the wet crude entrance of the equipment is known as the 4th aqueous original
Oil-in C4, oil export are known as the 4th oil export B4, and water out is known as the 4th water out A4, the 4th wet crude entrance C4
It is arranged on the end wall of tank body 1, the 4th oil export B4 and the 4th water out A4 are separately positioned on two phases of tank body 1
To side wall on.
Electro-dewatering apparatus according to the present invention is provided with above-mentioned wet crude separator, other portions in the equipment
Part is the conventional components of this field electro-dewatering apparatus, and details are not described herein, and those skilled in the art can be according to known normal
Knowledge obtains.
6th aspect, the present invention provides a kind of settling tanks, as shown in fig. 6, the equipment includes above-mentioned wet crude separation
Device, the settling tank are vertical structure, and the upper end wall of the tank body 1 is vault, and lower end wall is plane.
Settling tank according to the present invention, concentric tubes are fixed on the end wall of tank body 1.Wherein the end wall is plane,
And the end wall is contacted with ground.
Settling tank according to the present invention, emulsion discharge pipe can be arranged on the side wall of settling tank.
Settling tank according to the present invention, when wet crude separator includes interface instrument 2, the interface instrument 2 is set
It sets on tank body vault.
Settling tank according to the present invention is provided with above-mentioned wet crude separator in the equipment, and other components are equal
For the conventional components of this field settling tank, details are not described herein, and those skilled in the art can obtain according to common knowledge.
The wet crude separator of the present invention can be applied to the various separation equipments for needing to export intractable emulsion
In, such as can be used in the separation equipments such as three phase separation equipment, free water removal equipment, electro-dewatering apparatus, settling tank.Its
In, those skilled in the art knows, settling tank be normal pressure separation equipment, and three phase separation equipment, free water removal equipment,
Electro-dewatering apparatus is the separation equipment for having certain pressure.
In the present invention, three phase separation equipment, the specifically used method of free water removal equipment, electro-dewatering apparatus, settling tank
Other than the method for wet crude separation as described above of the invention, other steps and parameter are this field routine techniques,
It can determine according to actual needs.
Three phase separation equipment, free water removal equipment, settling tank and electro-dewatering apparatus can be used for wet crude separation work
In the different phase of skill.Can be selected according to the difference of the oil-water ratio of wet crude above-mentioned different separation equipment or its
Combination.Usually, the water oil composition of the water phase and oil phase that are obtained using above-mentioned separation equipment is as shown in table 1 below：
Table 1
It can thus be seen that using wet crude separator of the present invention, and it is orderly used to three phase separation
The equipment such as equipment, free water removal equipment, settling tank and electro-dewatering apparatus, wherein three phase separation equipment, free water removal equipment
Sequencing can be interchanged.In the oil phase that final electro-dewatering apparatus oil export obtains moisture content can down to 0.5% or more down to
0.1%, oil content can be less than 0.1% in the water phase that water out obtains, to illustrate the present invention wet crude separator and
Method can export intractable emulsion while improving oil-water separation.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail can carry out a variety of simple variants to technical scheme of the present invention within the scope of the technical concept of the present invention, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (19)
1. a kind of wet crude separator, which is characterized in that the device includes tank body (1), optional interface instrument (2), setting
Wet crude entrance, oil export and the water that emulsion demulsification in tank body exports component (3) and is arranged on tank wall go out
Mouthful,
The emulsion demulsification exports component (3) and includes：First emulsion delivery line (301), the second emulsion delivery line
(302), demulsifier ingress pipe (303) and demulsifier distributor pipe (304), the demulsifier ingress pipe (303) and demulsifier distribution
Pipe (304) is connected, and is provided with the first hole (3041) on the demulsifier distributor pipe (304) so that coming from demulsifier ingress pipe
(303) demulsifier is scattered in through first hole in emulsification liquid layer；The first emulsion delivery line (301) and the second emulsification
Liquid delivery line (302) is connected, and is provided with the second hole (3011) on the first emulsion delivery line (301) so that through demulsification
Remaining emulsion exports tank body (1) outside through the second emulsion delivery line (302) afterwards,
The interface instrument (2) is used to detect the height of tank body (1) internal emulsification liquid layer to control the export of emulsion.
2. the apparatus according to claim 1, wherein the tank body (1) is cylindric tank body；
The second emulsion delivery line (302) is concentric tubes with demulsifier ingress pipe (303), and the concentric tubes are along tank body
(1) radial setting；
Preferably, the concentric tubes are fixed on tank body (1) side wall；
Preferably, the concentric tubes are fixed on tank body (1) end wall.
3. device according to claim 1 or 2, wherein the first emulsion delivery line (301) and demulsifier distributor pipe
(304) tank body (1) is parallel to axially to be arranged.
4. according to the device described in any one of claim 1-3, wherein the first emulsion delivery line (301) and broken
Emulsion distributor pipe (304) is along tank body (1) radially adjacent setting.
5. device according to claim 4, wherein the quantity of the first emulsion delivery line (301) is 1~4, institute
The first emulsion delivery line (301) is stated to be uniformly arranged in tank body (1) axial direction；
Preferably, the quantity of the demulsifier distributor pipe (304) is 1~4, and the demulsifier distributor pipe (304) is in tank body (1)
It is uniformly arranged in axial direction.
6. device according to claim 5, wherein the first emulsion delivery line (301) and demulsifier distributor pipe
(304) projection in tank body (1) axial direction has angle, it is preferable that the angle is 30~90 degree, more preferably 45~90
Degree.
7. the apparatus of claim 2, wherein the device further includes：Fixed component (305), the fixed component
(305) so that the first emulsion delivery line (301) and the demulsifier distributor pipe (304) are radially displaceable along tank body (1)
Ground is connected with concentric tubes.
8. the apparatus according to claim 1, wherein when wet crude separator includes interface instrument (2), the interface
Instrument (2) is arranged on tank wall or end wall.
9. the apparatus according to claim 1, wherein the device further includes：It is arranged online on emulsion discharge pipe
Analyzer (4), for monitoring the oil-water ratio in derived emulsion in real time to determine end time derived from emulsion.
10. the apparatus according to claim 1, wherein the first hole (3041) on the demulsifier distributor pipe (304) is uniformly distributed
It is arranged, the second hole (3011) on the first emulsion delivery line (301) is uniformly arranged.
11. a kind of method of wet crude separation, which is characterized in that this method includes：
Wet crude containing demulsifier is passed through through wet crude entrance in tank body, under gravity and/or electric field action,
So that wet crude is at least separated into water phase and oil phase, the water phase is exported via water out outside tank body, and the oil phase is via oil
Outside outlet export tank body, the height of tank body (1) internal emulsification liquid layer is detected by interface instrument (2), when tank body (1) internal emulsification liquid layer
When height reaches the 5~45% of tank body (1) diameter, it will be demulsified by demulsifier ingress pipe (303) and demulsifier distributor pipe (304)
Agent import and make its be scattered in emulsification liquid layer in, when the height of tank body (1) internal emulsification liquid layer reach tank body (1) diameter 5~
15%, and it is passed through the height of demulsifier emulsification liquid layer again when no longer changing, stopping is passed through demulsifier, passes through the first emulsion and exports
It manages (301) and the second emulsion delivery line (302) and remaining emulsion after demulsification is exported into tank body (1) outside.
12. according to the method for claim 11, wherein when the height of tank body (1) internal emulsification liquid layer reaches tank body (1) diameter
5~15% when, demulsifier is imported by demulsifier ingress pipe (303) and demulsifier distributor pipe (304) and it is made to be scattered in
It emulsifies in liquid layer；
Preferably, when the height of tank body (1) internal emulsification liquid layer reaches the 10~15% of tank body (1) diameter, and it is passed through demulsifier again
When the height of emulsification liquid layer no longer changes, stopping is passed through demulsifier.
13. according to the method for claim 11, wherein this method further includes：By in-line analyzer (4), monitoring is led in real time
Oil-water ratio in the emulsion gone out is to determine end time derived from emulsion；
Preferably, when the oil-water ratio in derived emulsion is 1：When 0.1~0.25, stop export emulsion.
14. a kind of three phase separation equipment, which is characterized in that the equipment includes aqueous described in any one of claim 1-10
Crude separating device, the three phase separation equipment are horizontal type structure, and the tank body (1) is outside along the end walls of its axis direction
The cambered surface of side protrusion.
15. equipment according to claim 14, wherein the equipment further includes：Tank body (1) interior parallel is in tank body (1) axis
To side wall on the plate washer (5) that is arranged, the radial direction for being oriented parallel to tank body (1) of the plate washer (5).
16. equipment according to claim 14, wherein the equipment further includes：It is arranged in the side for being parallel to tank body (1) axial direction
Gas vent on wall.
17. a kind of free water removal equipment, which is characterized in that the equipment includes containing described in any one of claim 1-10
Water crude separating device, the free water removal equipment are horizontal type structure, and the tank body (1) is along the end walls of its axis direction
Raised cambered surface outward.
18. a kind of electro-dewatering apparatus, which is characterized in that the equipment includes the aqueous original described in any one of claim 1-10
Oil separating device, the electro-dewatering apparatus are horizontal type structure, and the tank body (1) is convex outward along the end walls of its axis direction
The cambered surface risen.
19. a kind of settling tank, which is characterized in that the equipment includes the wet crude point described in any one of claim 1-10
From device, the settling tank is vertical structure, and the upper end wall of the tank body (1) is vault, and lower end wall is plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710242445.4A CN108728158B (en) | 2017-04-14 | 2017-04-14 | Device and method for separating crude oil containing water, three-phase separation equipment, free water removal equipment, electric dehydration equipment and settling tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710242445.4A CN108728158B (en) | 2017-04-14 | 2017-04-14 | Device and method for separating crude oil containing water, three-phase separation equipment, free water removal equipment, electric dehydration equipment and settling tank |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534317A (en) * | 2022-02-22 | 2022-05-27 | 海南海嘉惠科技有限公司 | Laminar flow oil-water two-phase flow multi-frequency microwave detection real-time feedback segmentation method |
| CN115404099A (en) * | 2021-05-28 | 2022-11-29 | 大庆油田有限责任公司 | Free water removal method for high-surfactant-content high-water-content produced fluid for high oil displacement |
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| US20160208176A1 (en) * | 2015-01-16 | 2016-07-21 | Exxonmobil Research And Engineering Company | Desalter operation |
| 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 |
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| CN201354360Y (en) * | 2009-01-09 | 2009-12-02 | 中国石油化工集团公司 | Device for removing electric desalting emulsion layer |
| CN201581056U (en) * | 2009-10-28 | 2010-09-15 | 江苏三星化工有限公司 | Electrodesalting and electrodehydrating emulsified liquid emission device |
| US20160208176A1 (en) * | 2015-01-16 | 2016-07-21 | Exxonmobil Research And Engineering Company | Desalter operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115404099A (en) * | 2021-05-28 | 2022-11-29 | 大庆油田有限责任公司 | Free water removal method for high-surfactant-content high-water-content produced fluid for high oil displacement |
| CN115404099B (en) * | 2021-05-28 | 2024-01-30 | 大庆油田有限责任公司 | Free water removal method for high-water-content produced liquid with high surfactant content for oil displacement |
| CN114534317A (en) * | 2022-02-22 | 2022-05-27 | 海南海嘉惠科技有限公司 | Laminar flow oil-water two-phase flow multi-frequency microwave detection real-time feedback segmentation method |
| CN114534317B (en) * | 2022-02-22 | 2023-06-16 | 海南海嘉惠科技有限公司 | Real-time feedback segmentation method for multi-frequency microwave detection of laminar oil-water two-phase flow |
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| CN108728158B (en) | 2020-08-14 |
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