CN202016989U - Electric desalting and dehydrating device - Google Patents
Electric desalting and dehydrating device Download PDFInfo
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- CN202016989U CN202016989U CN2010206802130U CN201020680213U CN202016989U CN 202016989 U CN202016989 U CN 202016989U CN 2010206802130 U CN2010206802130 U CN 2010206802130U CN 201020680213 U CN201020680213 U CN 201020680213U CN 202016989 U CN202016989 U CN 202016989U
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- desalting
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- crude oil
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Abstract
The utility model discloses an electric desalting and dehydrating device, which consists of a pulse transformer 1, pulse control equipment 10, an electric desalting tank 12, pole plates 4, a crude oil inlet distributor 11, a crude oil outlet collector 3, an ultrasonic generator 7 and ultrasonic probes 5, wherein the ultrasonic probes 5 are arranged at the two ends of the desalting tank. By the device, desalting rate is improved by 30 percent, demulsifying agents are saved by 50 percent, and electricity is saved by over 60 percent.
Description
Technical field
The invention belongs to petrochemical industry, relate to a kind of device that is used for oil field and refinery wet oil desalting and dewatering.
Background technology
Domestic and international most of oil fields have entered the high moisture productive life at present, along with Development of Tertiary Oil Recovery Technology, the injection of a large amount of oil recovery auxiliary agents, add crude oil heaviness tendency, cause emulsification of crude oil serious, moisture many, chemical ingredients and oil-water emulsion complex structure, usually there are problems such as the warning of electrical desalting and dewatering device electric current superelevation, desalting and dewatering weak effect, electric desalting draining oil-containing height in oil field or refinery when handling these crude oil.The development of new desalting dewatering device can effectively improve the Desalting and Dewatering from Crude Oil effect, recycles crude resources, reduce the qualified discharge of device refining losses and implement device sewage, alleviates impact and the secondary pollution of oily(waste)water to follow-up sewage work.
The mid-90 in 20th century has begun pulsed electrical is used for the research of electrodesalting and electrodehydrating both at home and abroad, and with ultrasonic wave be used for crude oil demulsification last century the eighties research report is also arranged.These disclosed data and report are only with the pulse power or only carry out the desalting and dewatering of crude oil with ultrasonic wave mostly, and the pulse power and ultrasonic wave are used for the report of the desalination of crude oil and dehydration and few simultaneously.CN101475832 discloses a kind of method of utilizing the pulse power and ultrasonic wave crude oil to be carried out desalting and dewatering simultaneously, this method is specially: the crude oil that is heated to certain temperature is after injecting a certain amount of washing water and emulsion splitter, at first pass through the ultrasonic wave zone of action, enter electrical desalter then and under pulsed electrical field, carry out desalting and dewatering.According to this patent introduction, the desalting and dewatering that uses this method to carry out crude oil is handled, but brownout is more than 50%.The shortcoming of this method is that ultrasonic wave is short to the action time of crude oil, makes desalting and dewatering efficient lower.
The utility model content
The utility model provides a kind of crude oil electric desalting dewatering device, its purpose is: problems such as the desalting and dewatering efficient that exists at present crude oil electric desalting dewatering device is low, the electric desalting draining contains innage, the device running current is big provide a kind of effective crude oil electric desalting dewatering device.Utilize this device to carry out desalting and dewatering, when can satisfying the Desalting and Dewatering from Crude Oil requirement, the operation power consumption of all right economy system, the consumption of minimizing emulsion splitter.
A kind of electrical desalting and dewatering device of the utility model, form by pulse transformer 1, pulse operating device 10, electrical desalter 12, pole plate 4, crude oil import sparger 11, crude exports collector 3, ultrasonic generator 7 and ultrasonic probe 5, be characterised in that: ultrasonic probe 5 is installed in the two ends of desalter, and links to each other with ultrasonic generator 7.Ultrasonic probe 5 links to each other with ultrasonic generator 7 by transmission cable.
Described ultrasonic probe 5 is mounted on the electrical desalter outer wall by flange, ultrasonic probe 5 is installed in the two ends of electrical desalter respectively, every group of ultrasonic probe 5 is one or more, and probe radiating ultrasonic frequency can be identical with power, also can be inequality.The probe horizontal positioned, and extend into the water-oil interface layer of electrical desalter.
Pulse transformer 1, pulse operating device 10 are the pulse power supply system in the utility model.The power frequency supply of 380V becomes desired pulse signal through pulse operating device 10, is delivered to the pulse transformer 1 of tank deck then through cable, boost to required voltage after, be transported on the pole plate in the electrical desalter.Pulse transformer 1 output voltage waveforms is pulse rectangle square wave or sawtooth square wave.
The pulse transformer adjustable parameter is output voltage, frequency and dutycycle in the utility model.Its variable range is respectively: output voltage 0～60000V, frequency 50～2000Hz, dutycycle 5～70%.Different according to oil property and processing requirement can rationally be provided with these parameters.Hyperacoustic sound intensity and frequency also are the important factors that influences Desalting and Dewatering from Crude Oil.Generally speaking, its scope is respectively at 0.3w/cm
2～0.8w/cm
2And 20kHz～25kHz.
The utility model adopts the pulse power supply mode, forms pulsed electrical field between pole plate, and field voltage is pulse rectangle square wave or sawtooth square wave.The pulsed electrical field energy polarizes water droplet under the instantaneous pressure electric field coalescent, this intensity of impelling water droplets coalescence is higher than the alternating-electric field of same electric field intensity far away, can destroy oil-water interfacial film tension force, accelerates the collision of water droplet and coalescent, improve oil-water separation, thereby improve the desalting and dewatering rate.Because the pulse power is an intermission power supply method, has shortened conduction time, has reduced running current, therefore has tangible power savings.
In the crude oil electric desalting process, if the water-oil interface emulsion layer is blocked up, will cause the desalination electric current to increase even tripping operation, bring a series of problems such as cutting the water oil-containing exceeds standard, desalting and dewatering weak effect.Add ultrasonic probe in the water-oil interface position, utilize the thickness of ultrasonic dehydration effect attenuate emulsion layer.Ultrasonic energy is radiated in the emulsified crude oil, the oil-water emulsion structure is produced effects such as cohesion, breakdown of emulsion, vibration, reduce water droplet emulsification film strength on every side, help coalescent, the sedimentation of water droplet, simultaneously because hyperacoustic displacement effect makes the oil droplet of disperse phase constantly move, assemble to antinode or node, and bump, form the bigger oil droplet of diameter, under buoyancy, rise then, improved emulsion layer breakdown of emulsion ability and oil-water separation.
The utlity model has the characteristics of technology advanced person, desalting and dewatering efficient height, saving power consumption, saving medicament.With common exchange, the alternating current-direct current desalting dewatering device compares, and under identical condition, adopts the present invention can improve ratio of desalinization about 30%, can save emulsion splitter 50%, can economize on electricity more than 60%, that can reduce simultaneously device cuts the water oil-containing, and concrete data are difference with the difference of crude oil kind.
Accompanying drawing and description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: 1. pulse transformer, 2. crude exports, 3. crude exports collector, 4. vertical electrode, 5. ultrasonic probe, 6. flange, 7. ultrasonic generator, 8. drain outlet, 9. crude oil import, 10. pulse control system, 11. crude oil import spargers, 12. tank bodies.
Embodiment
As shown in Figure 1, the power supply of common two-phase 380V or other forms of power supply change the pulse signal of requirement into through pulse Controlling System (10),, boost to behind the desired voltage of technology by high-tension cable and be incorporated on the vertical plate (4) in the electrical desalter to the pulse transformer (1) that is positioned at electrical desalter top through cable transmission.Wet oil enters electrical desalter (12) by crude oil import (9) behind crude oil import sparger (11), under the pulsed electric field effect, the water droplet in the water solution of oil polarizes, is out of shape and assembles.Oil and the very fast within a certain period of time layering of water in the crude oil form water-oil interface between two-layer, and the water-oil interface place is the emulsion layer that is difficult for breakdown of emulsion.Because the energy that ultrasonic generator (7) produces sends ultrasonic probe (5) to by transmission cable, ultrasonic probe radiate supersonic wave energy, the emulsion layer at this water-oil interface place produce effects such as cohesion, breakdown of emulsion, vibration under action of ultrasonic waves in the crude oil.The oil droplet of disperse phase constantly moves, assembles, and bumps, and forms the bigger oil droplet of diameter, rises under buoyancy then, enters oil reservoir.Crude oil after the dehydration is discharged to the following process device through crude exports collector (3) by crude exports (2), and accumulative desalination sewage in electrical desalter bottom is discharged the motion device Sewage treatment systems through drain outlet (8).
With specific embodiment the utility model is described below, but the present invention is not limited to these embodiment.
Embodiment 1
Certain oil density 927.1Kg/m
3, water-content 0.05%, salts contg 87.8mgNaCl/L, emulsion splitter are water-soluble, and model is ERI1162, and water filling is a fresh water, PH=7,130 ℃ of desalination temperature, impulse electric field strength is 800v/cm, dutycycle is 50%, frequency 100Hz.Hyperacoustic sound intensity is 0.45w/cm
2, frequency is 20kHz.
Single stage desalting emulsion splitter injection rate is 15 μ g/g, and water injection rate 7%, secondary emulsion splitter dosage are 10 μ g/g, and water injection rate is 5%.
Test-results under this condition such as following table:
Embodiment 2
Certain oil density 927.1Kg/m
3, water-content 0.05%, salts contg 87.8mgNaCl/L, emulsion splitter are water-soluble, and model is ERI1162, and water filling is a fresh water, PH=7,130 ℃ of desalination temperature, impulse electric field strength is 800v/cm, dutycycle is 50%, frequency 100Hz.Hyperacoustic sound intensity is 0.45w/cm
2, frequency is 20kHz.
Single stage desalting emulsion splitter injection rate is 10 μ g/g, and water injection rate 7%, secondary emulsion splitter dosage are 5 μ g/g, and water injection rate is 5%.
Test-results under this condition such as following table:
Embodiment 3 (Comparative Examples)
Present embodiment adopts common alternating current-direct current desalting technology, compares with electric desalting technology of the present invention, and mainly contrasting object is emulsion splitter injection rate, ratio of desalinization and power consumption.
Certain oil density 927.1Kg/m
3, water-content 0.05%, salts contg 87.8mgNaCl/L, emulsion splitter are water-soluble, and model is ERI1162, and water filling is a fresh water, PH=7,130 ℃ of desalination temperature, strength of electric field are 800v/cm.
Single stage desalting emulsion splitter injection rate is 15 μ g/g, and water injection rate 7%, secondary emulsion splitter dosage are 10 μ g/g, and water injection rate is 5%.
Test-results under this condition such as following table:
Claims (5)
1. electrical desalting and dewatering device, be made up of pulse transformer (1), pulse operating device (10), electrical desalter (12), pole plate (4), crude oil import sparger (11), crude exports collector (3), ultrasonic generator (7) and ultrasonic probe (5), it is characterized in that: ultrasonic probe (5) is installed in the two ends of desalter.
2. according to the described a kind of electrical desalting and dewatering device of claim 1, it is characterized in that: ultrasonic probe (5) links to each other with ultrasonic generator (7) by transmission cable.
3. according to the described a kind of electrical desalting and dewatering device of claim 1, it is characterized in that: described ultrasonic probe (5) is connected the electrical desalter outer wall by flange.
4. according to the described a kind of electrical desalting and dewatering device of claim 1, it is characterized in that: described ultrasonic probe (5) is at least one.
5. according to the described a kind of electrical desalting and dewatering device of claim 1, it is characterized in that: described probe horizontal positioned extend into the water-oil interface layer of electrical desalter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206802130U CN202016989U (en) | 2010-12-20 | 2010-12-20 | Electric desalting and dehydrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206802130U CN202016989U (en) | 2010-12-20 | 2010-12-20 | Electric desalting and dehydrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202016989U true CN202016989U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206802130U Expired - Lifetime CN202016989U (en) | 2010-12-20 | 2010-12-20 | Electric desalting and dehydrating device |
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| CN (1) | CN202016989U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281410A (en) * | 2016-10-17 | 2017-01-04 | 广汉市思科信达科技有限公司 | A kind of ultrasonic dehydration desalting and dewatering pipeline |
| CN106433763A (en) * | 2016-10-17 | 2017-02-22 | 广汉市思科信达科技有限公司 | Ultrasonic intensified crude oil electro-desalting system |
| CN106753541A (en) * | 2016-12-26 | 2017-05-31 | 广汉市思科信达科技有限公司 | A kind of intensified by ultrasonic wave electrical oil dewatering salt system |
| CN110184088A (en) * | 2019-06-04 | 2019-08-30 | 哈尔滨理工大学 | A kind of crude dehydrating plant and dewatering of ultrasonic in combination electric field |
| CN115445248A (en) * | 2022-09-16 | 2022-12-09 | 江苏理工学院 | Efficient sump oil treatment device integrating multiple demulsification technologies and treatment method thereof |
-
2010
- 2010-12-20 CN CN2010206802130U patent/CN202016989U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281410A (en) * | 2016-10-17 | 2017-01-04 | 广汉市思科信达科技有限公司 | A kind of ultrasonic dehydration desalting and dewatering pipeline |
| CN106433763A (en) * | 2016-10-17 | 2017-02-22 | 广汉市思科信达科技有限公司 | Ultrasonic intensified crude oil electro-desalting system |
| CN106753541A (en) * | 2016-12-26 | 2017-05-31 | 广汉市思科信达科技有限公司 | A kind of intensified by ultrasonic wave electrical oil dewatering salt system |
| CN110184088A (en) * | 2019-06-04 | 2019-08-30 | 哈尔滨理工大学 | A kind of crude dehydrating plant and dewatering of ultrasonic in combination electric field |
| CN115445248A (en) * | 2022-09-16 | 2022-12-09 | 江苏理工学院 | Efficient sump oil treatment device integrating multiple demulsification technologies and treatment method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC Patentee after: Sinopec Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Luoyang Petrochemical Engineering Co., China Petrochemical Group Patentee before: Sinopec Corp. |
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| CX01 | Expiry of patent term |
Granted publication date: 20111026 |
|
| CX01 | Expiry of patent term |