CN207031154U - A kind of electro-desalting effluent sewerage oil removing system - Google Patents
A kind of electro-desalting effluent sewerage oil removing system Download PDFInfo
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- CN207031154U CN207031154U CN201720731637.7U CN201720731637U CN207031154U CN 207031154 U CN207031154 U CN 207031154U CN 201720731637 U CN201720731637 U CN 201720731637U CN 207031154 U CN207031154 U CN 207031154U
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Abstract
The utility model discloses a kind of electro-desalting effluent sewerage oil removing system.The system includes two parts of cyclonic separation and dirty oil dewatering；The cyclonic separation part includes one-level degreaser cyclone, the two level degreaser cyclone being sequentially connected by pipeline；The dirty oil dewatering part includes dewatering device for dirt oil and is arranged on the pipeline of its gateway；The pipeline of degreaser cyclone oil discharge outlet is connected with the pipeline of the aqueous sump oil entrance of dewatering device for dirt oil in the dirty oil dewatering part in the cyclonic separation part.The system is by carrying out cyclonic separation to oil-polluted water, and sewage is divided into oil-polluted water and aqueous sump oil two parts, the follow-up water processing establishment of the outer venting of oil-polluted water, aqueous sump oil decontamination oil dehydrator dehydration.The sump oil of discharge is aqueous few, can direct reuse, the oil content of wastewater of discharge is low, can directly go follow-up water processing establishment to handle.
Description
Technical field
The utility model belongs to technical field of waste water processing, more particularly to a kind of electro-desalting effluent sewerage oil removing system.
Background technology
Under normal circumstances, by the preferred of the operation optimization of electric desalting apparatus and demulsifier, the discharge of electrical oil dewatering salt cellar is dirty
Water should reach oil content and be not more than 150ppm technical indicator, and can be discharged directly into sewage from oil refinery processing system.But
Under special circumstances, especially being continuously increased recently as crude oil with poor quality processing quantity, such as processing heavy crude, peracid are oily
When often result in desalination sewage for a long time can not be up to standard, or sewage with oil is too high, sometimes even up to 1%, such desalination sewage is just
Sewage disposal system can be just discharged into after having to pass through processing.For the processing of desalination sewage, the method that oil plant is commonly used at present is
Increase by a sewage tank for oil removal, sewage-treating agent such as demulsifier, flocculant etc. are added into oil removing pot, desalination sewage is purified
Love psychology processing system is discharged into after processing again.
Conventional oil-contaminated water processing method has cyclonic separation and swash plate-coarse separation.The essential structure of cyclone separator
For a disengagement chamber, one to two entrances and two outlets.Cyclone disengagement chamber mainly has cylinder, cone, post-taper three
Kind citation form.Entrance has two kinds of tangential inlet and involute entrance, outlet generally two, and is mostly axially outlet, point
Cloth is at the both ends of cyclone separator.What it is close to feed end is overfall, is underflow opening away from feed end.
Cyclone is physics, mechanical de-oiling, and the oil in Electric Desalting Wastewater is all the extremely strong emulsification of surface-active
Liquid, so the entrance sewage oil concentration that must assure that cyclone just can ensure that the effect of cyclone separator in scope of design；By
Certain shear action is produced in the flowing of fluid in cyclone, if parameter designing is improper, easily by drop (oil droplet or water
Drop) smash emulsification and deteriorate separation process；Different structure size or operation bar are generally required due to handling material of different nature
The cyclone of part, therefore, cyclone versatility are poor.
For the general principle of swash plate-coalescence degreaser according to Stokes' law, the separation ultimate range of small oil droplet is point
Dividing plate plate spacing, disengaging time are flowing time of the aqueous phase in distribution grid, in order that smaller oil droplet can buoyance lift it is necessary to controlling
The ratio of rational demarcation strip spacing and length is made, flow velocity of the aqueous phase in demarcation strip is also controlled, could so obtain
Deoiling effect.This kind of oil expeller must just be made big for the effect reached, so as to effectively reduce demarcation strip spacing and length
Flow velocity of the ratio and aqueous phase of degree in demarcation strip.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of electro-desalting effluent sewerage oil removing system
System, there is the characteristics of effluent sewerage oil content is low, and discharge sump oil water content is low.
The purpose of this utility model is achieved through the following technical solutions：
A kind of electro-desalting effluent sewerage oil removing system, including two parts, cyclonic separation part and dirty oil dewatering part；
The cyclonic separation part includes one-level degreaser cyclone, two level degreaser cyclone and pipeline；
The one-level, two level degreaser cyclone are same structure, by cylindrical section, large cone section, small cone section and tail straight length
It is sequentially connected and diameter reduces successively, it is equal in adjacent two sections of socket section diameters；The cylindrical section, tail straight length are circle
Cylindrical cavity, tangential mouth is provided with cylindrical section side wall as oil-polluted water entrance, in its bottom opening as oil discharge outlet, in tail
For the tail end opening of straight length as pure water inlet, the large cone section, small cone section are truncated cone-shaped cavity；
In the cyclonic separation part, one-level degreaser cyclone, two level degreaser cyclone are sequentially connected via pipeline, and one
Level, two level degreaser cyclone entry position pipeline on be equipped with pressure monitoring and adjusting means, on the pipeline of outlet port
Provided with pressure monitoring device；
The dirty oil dewatering part includes dewatering device for dirt oil and is arranged on the pipeline of its gateway；
The dewatering device for dirt oil, its main body are a horizontal tank, a side opening of tank as aqueous sump oil entrance, tank it is another
Side opening sets oil-collecting bag and transformer as outfall, tank deck, and tank bottom opening is as tap hole；The oil-collecting bag, its
Main body is a hydrostatic column, and upper and lower two layers of battery lead plate of setting, two layers of battery lead plate are suspended on oil-collecting by insulating suspension in it
In bag, the open top of oil-collecting bag as sump oil outlet, an oil-collecting bag side opening adjacent with transformer as power supply intake,
High voltage side of transformer is connected by power supply intake with lower electrode plate；
The pipeline of degreaser cyclone oil discharge outlet and dirty oil dewatering in the dirty oil dewatering part in the cyclonic separation part
The pipeline of the aqueous sump oil entrance of device is connected.
Preferably, boundary position instrument is additionally provided with the dewatering device for dirt oil, boundary position instrument is provided with two ports, and connection is dirty respectively
Oil dehydrator tank body and oil-collecting bag；Boundary position regulating valve is additionally provided with the pipeline of dewatering device for dirt oil sump oil outlet, with the boundary
Position instrument interlocking.
Preferably, pressure transmitter is additionally provided with the dewatering device for dirt oil, its port connection dewatering device for dirt oil tank body；It is dirty
Pressure-regulating valve is additionally provided with the pipeline of oil dehydrator outfall, is interlocked with the pressure transmitter.
Preferably, bypass duct is separately set on the pipeline of the dewatering device for dirt oil outfall, and in the bypass duct
It is provided with relief valve.
Preferably, bypass duct is separately set on the pipeline of the aqueous sump oil entrance of the dewatering device for dirt oil, with dewatering device for dirt oil
The pipeline of outfall is connected.
Preferably, the insulating suspension in the oil-collecting bag is polytetrafluoroethylene (PTFE) material.
A kind of electro-desalting effluent sewerage oil removing system of the utility model and method have the beneficial effect that：
Cyclone deoiling and electric field coalescent deoiling are provided with the system, cyclone deoiling is used as pretreatment, electric field coalescent deoiling
As advanced treating so that system effluent sewerage oil content is low, can directly go downstream wastewater treatment facility advanced treating, system row
It is low to go out sump oil water content, can direct reuse.
Brief description of the drawings
Fig. 1 is the structure chart of the degreaser cyclone of the utility model electro-desalting effluent sewerage oil removing system：
Wherein, 1- oil-polluted waters entrance, 2- oil discharge outlets, 3- cylindrical sections, 4- large cone sections, 5- small cone sections, 6- tails straight length, 7-
Pure water inlet.
Fig. 2 is the structure chart of the dewatering device for dirt oil of the utility model electro-desalting effluent sewerage oil removing system：
Wherein, the aqueous sump oil entrances of 8-, 9- sump oils outlet, 10- outfalls, 11- tap holes, 12- circle positions instrument
One interface, 13- circle positions instrument second interface, 14- pressure transmitters interface, 15- power supplys intake, 16- battery lead plates, 17- insulating hangings
Extension, 18- dewatering device for dirt oil tanks body, 19- oil-collecting bags.
Fig. 3 is the cyclonic separation part schematic flow sheet of the utility model electro-desalting effluent sewerage oil removing system：
Wherein, 20- oil-polluted waters inlet duct, the regulating valves of 21- first, 22- first pressures table, 23- one-level cyclone deoilings
Device, the regulating valves of 24- second, 25- second pressure gauges, the pressure gauges of 26- the 3rd, 27- two levels degreaser cyclone, the pressure gauges of 28- the 4th,
The first bilge discharge pipes of 29- road, the pressure gauges of 30- the 5th, the pressure gauges of 31- the 6th, 32- the first sump oil discharge lines.
Fig. 4 is the dirty oil dewatering part schematic flow sheet of the utility model electro-desalting effluent sewerage oil removing system：
Wherein, the aqueous sump oil inlet ducts of 33-, 34- transformers, 35- circle positions instrument, 36- pressure transmitters, 37- circle positions are adjusted
Save valve, the second sump oils of 38- discharge line, 39- pressure-regulating valves, the second bilge discharge pipes of 40- road, 41- relief valves, 42-
Safety relief pipeline, 43- tap lines, 44- sump oil bypass ducts.
Embodiment
With reference to Figure of description and specific embodiment to a kind of electro-desalting effluent sewerage oil removing system of the utility model
Technical scheme be described in further detail.
Embodiment 1
A kind of electro-desalting effluent sewerage oil removing system, including two parts, cyclonic separation part and dirty oil dewatering part.
As shown in figure 1, degreaser cyclone is sequentially connected and formed by cylindrical section 3, large cone section 4, small cone section 5 and tail straight length 6,
It is equal in the section diameter that adjacent two sections needs are socketed in order to easy to connect and diameter reduces successively；The cylindrical section 3, tail are straight
Pipeline section 6 is a cylindrical cavity, tangential mouth is provided with the side wall of cylindrical section 3 as oil-polluted water entrance 1, in its bottom opening
As pure water inlet 7, the large cone section 4, small cone section 5 it is for round platform in the tail end opening of tail straight length 6 as oil discharge outlet 2
Shape cavity.
As shown in Figure 1,3, the oil-polluted water from electrical desalter bottom passes through oil-polluted water inlet duct 20 and regulating valve 21
Oil removal treatment is carried out into one-level degreaser cyclone 23, the sewage after processing is arranged by the pure water inlet of one-level degreaser cyclone 23
Go out, remove two level degreaser cyclone 27, aqueous sump oil is discharged by the oil discharge outlet of one-level degreaser cyclone 23, goes the first sump oil to discharge
Pipeline 32.Sewage into two level degreaser cyclone 27 is handled by eddy flow again, and the sewage after processing passes through two level cyclone deoiling
The pure water inlet discharge of device 27, goes to the first bilge discharge pipe road 29, in downstream wastewater treatment facility (such as Love psychology processing system
System) in advanced treating.Aqueous sump oil is discharged by the oil discharge outlet of two level degreaser cyclone 27, and from one-level degreaser cyclone 23
Aqueous sump oil together remove the first sump oil discharge line 32.First sump oil discharge line 32 and the entrance of dirty oil dewatering part connect
Connect.
During above-mentioned cyclonic separation, the operating pressure of degreaser cyclone need to maintain 0.6-1.0MPa, can set
Multiple pressure gauges are used for the operating pressure at each position of monitoring system, separately set regulating valve to be used to adjust pressure in key position.
Specifically, the first regulating valve 21 and first pressure table 22 can be set on oil-polluted water inlet duct 20, for supervising in real time
Survey and adjust the operating pressure of the oil-polluted water inlet duct 20 before entering one-level degreaser cyclone 23；In one-level degreaser cyclone
Second regulating valve 24 and second pressure gauge 25 are set on the pipeline connected between 23 and two level degreaser cyclone 27, for supervising in real time
The operating pressure for the pipeline surveyed between regulation one-level, two level degreaser cyclone；In the first bilge discharge pipe road and the first sump oil
3rd pressure gauge 26, the 4th pressure gauge 28, the 5th pressure gauge 30 and the 6th pressure gauge 31 are set respectively on discharge line, for dividing
Not Jian Ce one-level, two level degreaser cyclone each exit pipeline operating pressure.
When degreaser cyclone is run, pending oil-polluted water tangentially enters the circle of degreaser cyclone under above-mentioned operating pressure
Cylinder section 3, and rotated at a high speed in cyclone, produce the centrifugal force field of sufficient intensity.Due to centrifugal action, oil phase is to cyclone axle
Moved at the heart, form upward inward eddy oil core；Aqueous phase is moved to wall, forms downward contour stealth.After water-oil separating, oil from
Oil discharge outlet 2 is discharged, and purified water is discharged from pure water inlet 7.
The small cone section 5 of degreaser cyclone is the main region of water-oil separating.The angular momentum of fluid reaches near small cone section 5
Maximum.In small cone section 5, due to the friction of tube wall, liquid stream weakens in the angular momentum of cone Bottomhole pressure, in addition, small-angle 5 flows
Logical area, which is gradually reduced, will compensate the reduction of angular momentum, and the comprehensive function of the two makes the high-speed rotational fortune that fluid keeps relative stability
It is dynamic.Flowing through the liquid stream after small Taper Pipe 5 still has very big angular momentum, and oil-polluted water can further be divided in tail straight length 6
From.Tail straight length 6 plays stabilization to the oily core of screw, and it is the purification after separating that it, which exports (pure water inlet 7) liquid,
Water.
As shown in Fig. 2 the main body of dewatering device for dirt oil is a horizontal tank, the side of tank sets aqueous sump oil entrance 8, tank it is another
Side sets outfall 10, and tank deck sets oil-collecting bag 19, and roof opening sets and put as pressure transmitter interface 14, tank bottom
Liquid mouth 11, tank surface set boundary position instrument first interface 12；The oil-collecting bag 19, its main body are a hydrostatic column, setting in it
Upper and lower two layers of battery lead plate 16, two layers of battery lead plate 16 are suspended in oil-collecting bag 19 by insulating suspension 17, and the top of oil-collecting bag 19 is opened
Mouth is used as sump oil outlet 9, and the side opening of oil-collecting bag 19 1 connects as power supply intake 15, another side opening as boundary position instrument second
Mouth 13.
As shown in Figure 2,4, the sump oil from cyclone deoiling part enters dewatering device for dirt oil from aqueous sump oil inlet duct 33
Tank body 18, part flood drop in sump oil in tank body under gravity in settling.After liquid layer gradually rises, into oil-collecting
19 are wrapped, is provided with upper and lower two layers of battery lead plate 16 in oil-collecting bag 19, two layers of battery lead plate 16 passes through the insulation of polytetrafluoroethylene (PTFE) material
Hanging 17 is suspended in oil-collecting bag 19, and wherein lower electrode plate is connected with the High voltage output side of transformer 34, then two layers of electrode
A highfield is formed between plate 16.After aqueous oil reservoir enters the highfield that two layers of battery lead plate 16 is formed, the small water in sump oil
Drop in the presence of electric field and coalesce, small water droplets coalescence finally separates from oil reservoir, settled down, taken off into sump oil into big water droplet
Hydrophone tank body 18.It is dehydrated the sump oil outlet 9 of the sump oil of purification then from the top of oil-collecting bag 19 and leaves oil-collecting bag 19, into the
Two sump oil discharge lines 38, carry out recycling.Second sump oil discharge line 38 sets bounded position regulating valve 37, itself and installation
Boundary position instrument 35 between oil-collecting bag 19 and dewatering device for dirt oil tank body 18 interlocks, and the aperture of boundary position regulating valve 37 is according to boundary position instrument
35 instruction regulation, setting oil water interface are highly 50%~80%, when the instruction of boundary position instrument 35 is less than the oil water interface of setting
During height, the aperture of boundary position regulating valve 37 diminishes, when the instruction of boundary position instrument 35 is higher than the oil water interface height set, the regulation of boundary position
The aperture of valve 37 becomes big, when the indicated altitude and the highly consistent oil water interface of setting of boundary position instrument 35, boundary position regulating valve 37
Aperture is constant.The sewage for being deposited in dewatering device for dirt oil tank body 18 enters the second bilge discharge pipe road 40 from outfall 10,
The advanced treating in downstream wastewater treatment facility (such as Love psychology processing system).Pressure is set on second bilge discharge pipe road 40
Regulating valve 39, pressure-regulating valve 39 are interlocked with the pressure transmitter 36 installed in the top of dewatering device for dirt oil tank body 18, and pressure is adjusted
The aperture for saving valve 39 is adjusted according to the instruction of pressure transmitter 36, when the instruction of pressure transmitter 36 is less than the pressure set,
The aperture of pressure-regulating valve 39 diminishes, and when the instruction of pressure transmitter 36 is higher than the pressure set, the aperture of pressure-regulating valve 39 becomes
Greatly, when the instruction of pressure transmitter 36 is consistent with the pressure set, the aperture of pressure-regulating valve 39 is constant.Discharged in the second sewage
Safety relief pipeline 42 is separately set on pipeline 40, relief valve 41 is set on safety relief pipeline 42.Relief valve 41 is set
A set-pressure is put, when system pressure is less than set-pressure, relief valve 41 is closed, when system pressure is higher than set-pressure
When, relief valve 41 is opened, and when system pressure is less than set-pressure, relief valve 41 recovers closed mode.Sump oil
Dewatering part separately sets tap line 43, and it is connected with the tap hole 11 of the bottom of dewatering device for dirt oil tank body 18, for by sump oil
Liquid in dehydrator is put only.Sump oil bypass duct 44, the sump oil bypass duct 44 are separately set on aqueous sump oil inlet duct 33
Directly it is connected with the second bilge discharge pipe road 40, sump oil can be made in case of emergency, without dewatering device for dirt oil, directly through second
Discharge in bilge discharge pipe road 40.
The density contrast of water-oil phase is the motive force of water-oil separating, and oil viscosity be then resistance, for water and oil this two
The separation of individual immiscible liquid, the sinking speed of water droplet meet the stoke of spheroidal particle free settling in stationary fluid
This law：
U=d2(ρ1-ρ2)g/18μρ2
In formula, U-drops of water fall down speed, m/s；
D-drop diameter, m；
ρ1、ρ2The density of-water and oil, kg/m3；
The dynamic viscosity of μ-oil, m2/s；
G-acceleration of gravity, m/s2。
From above formula, to increase sinking speed, should mainly increase drop diameter and reduce the viscosity of oil, and make water and oil
Density contrast increases.Under the premise of the technical conditions of oil dewatering, it is possible option only to increase drop diameter.In electric field
In the presence of, small water droplet is polymerized to big water droplet after the effect such as polarizing, deform, vibrate, attract, repelling.Due to the sedimentation speed of water droplet
Degree is square directly proportional with drop diameter, thus increase drop diameter can greatly speed up it to sinking speed.
In actual motion, the sewage of the oil-containing 10% from Crude Desalting System, after two-stage eddy flow, sewage is divided into two
Part, a part is oil-polluted water, and sewage with oil is less than 100ppm, and oil-polluted water goes follow-up water treatment system, and another part is
Aqueous sump oil, sump oil aqueous 10%, decontamination oil dehydrator is handled aqueous sump oil again, and the sump oil after processing is aqueous to be less than 0.1%, place
Draining oil-containing can be decreased to less than 100ppm during reason, then remove subsequent treatment facility.
Claims (6)
1. a kind of electro-desalting effluent sewerage oil removing system, it is characterised in that including two parts, cyclonic separation part and sump oil take off
Water section；
The cyclonic separation part includes one-level degreaser cyclone, two level degreaser cyclone and pipeline；
The one-level, two level degreaser cyclone are same structure, by cylindrical section, large cone section, small cone section and tail straight length successively
Connect and diameter reduces successively, it is equal in adjacent two sections of socket section diameters；The cylindrical section, tail straight length are cylinder
Cavity, tangential mouth is provided with cylindrical section side wall as oil-polluted water entrance, in its bottom opening as oil discharge outlet, in tail straight tube
For the tail end opening of section as pure water inlet, the large cone section, small cone section are truncated cone-shaped cavity；
In the cyclonic separation part, one-level degreaser cyclone, two level degreaser cyclone are sequentially connected via pipeline, one-level, two
Pressure monitoring and adjusting means are equipped with the pipeline of level degreaser cyclone entry position, pressure is equipped with the pipeline of outlet port
Power monitoring device；
The dirty oil dewatering part includes dewatering device for dirt oil and is arranged on the pipeline of its gateway；
The dewatering device for dirt oil, its main body are a horizontal tank, and a side opening of tank is opened as aqueous sump oil entrance, the opposite side of tank
Mouth is used as outfall, and tank deck sets oil-collecting bag and transformer, and tank bottom opening is as tap hole；The oil-collecting bag, its main body
For a hydrostatic column, upper and lower two layers of battery lead plate of setting, two layers of battery lead plate are suspended on oil-collecting bag by insulating suspension in it
Interior, the open top of oil-collecting bag becomes as sump oil outlet, an oil-collecting bag side opening adjacent with transformer as power supply intake
Depressor high-pressure side is connected by power supply intake with lower electrode plate；
The pipeline of degreaser cyclone oil discharge outlet contains with dewatering device for dirt oil in the dirty oil dewatering part in the cyclonic separation part
The pipeline of water sump oil entrance is connected.
A kind of 2. electro-desalting effluent sewerage oil removing system according to claim 1, it is characterised in that the dewatering device for dirt oil
On be additionally provided with boundary position instrument, boundary position instrument is provided with two ports, connects dewatering device for dirt oil tank body and oil-collecting bag respectively；Sump oil takes off
Boundary position regulating valve is additionally provided with the pipeline of hydrophone sump oil outlet, is interlocked with boundary position instrument.
A kind of 3. electro-desalting effluent sewerage oil removing system according to claim 1, it is characterised in that the dewatering device for dirt oil
On be additionally provided with pressure transmitter, its port connection dewatering device for dirt oil tank body；It is another on the pipeline of dewatering device for dirt oil outfall
Provided with pressure-regulating valve, interlocked with the pressure transmitter.
A kind of 4. electro-desalting effluent sewerage oil removing system according to claim 1, it is characterised in that the dewatering device for dirt oil
Bypass duct is separately set on the pipeline of outfall, and relief valve is provided with the bypass duct.
A kind of 5. electro-desalting effluent sewerage oil removing system according to claim 1, it is characterised in that the dewatering device for dirt oil
Bypass duct is separately set on the pipeline of aqueous sump oil entrance, is connected with the pipeline of dewatering device for dirt oil outfall.
6. a kind of electro-desalting effluent sewerage oil removing system according to claim 1, it is characterised in that in the oil-collecting bag
Insulating suspension is polytetrafluoroethylene (PTFE) material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720731637.7U CN207031154U (en) | 2017-06-22 | 2017-06-22 | A kind of electro-desalting effluent sewerage oil removing system |
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| CN201720731637.7U CN207031154U (en) | 2017-06-22 | 2017-06-22 | A kind of electro-desalting effluent sewerage oil removing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129080A (en) * | 2017-06-22 | 2017-09-05 | 江苏金门能源装备有限公司 | A kind of electro-desalting effluent sewerage oil removing system and deoiling method |
| CN113025376A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气股份有限公司 | Oil-water separation device and oil-water separation method |
-
2017
- 2017-06-22 CN CN201720731637.7U patent/CN207031154U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129080A (en) * | 2017-06-22 | 2017-09-05 | 江苏金门能源装备有限公司 | A kind of electro-desalting effluent sewerage oil removing system and deoiling method |
| CN113025376A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气股份有限公司 | Oil-water separation device and oil-water separation method |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201229 Address after: No.18 District, Konggang new area, Jurong City, Zhenjiang City, Jiangsu Province Patentee after: JIANGSU JINMEN ENERGY & EQUIPMENT Co.,Ltd. Patentee after: Nanjing fanghuai Chemical Technology Co., Ltd Patentee after: Liu Zuhu Address before: No.18, Konggang new area, Guozhuang Town, Jurong City, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU JINMEN ENERGY & EQUIPMENT Co.,Ltd. Patentee before: Liu Zuhu |
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| TR01 | Transfer of patent right |