CN102451577A - One-way feeding ultrasound-electric desalting combined method and device thereof - Google Patents
One-way feeding ultrasound-electric desalting combined method and device thereof Download PDFInfo
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Abstract
The present invention relates to a one-way feeding ultrasound-electric desalting combined method and a device thereof. The device comprises an electric desalting tank and an ultrasonication zone, and is characterized in that: crude oil enters the electric desalting tank in a one-way feeding manner; a pipeline is provided with the one-way feeding parallel ultrasonication zone, wherein the crude oil enters the electric desalting tank by the pipeline; at least a single ultrasonication zone forms a parallel connection to form the one-way feeding parallel ultrasonication zone; the crude oil flows through the parallel ultrasonication zone, and is uniformly distributed to the single ultrasonication zone; after emulsion breaking with the ultrasonic wave effect, the crude oil enters the electric desalting tank to carry out gravity settling and/or electric field separation. The method and the device of the present invention can be used for the electric desalting processes of the crude oil in the oil refineries, and can further be used for the setting dehydration processes or the electrical dehydration processes of the crude oil in the oil field.
Description
Technical field
The present invention relates to a kind of method of crude oil demulsification dehydration desalination, particularly relate to the method for a kind of ultrasonic wave-electro-desalting associating.
Background technology
Crude oil demulsification is the key problem in technology of oil field dehydration and refinery desalting.For many years; The crude oil demulsification Study on Technology is only limited in the research of chemical demulsifier mostly; Different types of crude oil there is bigger limitation; And the application of demulsifier has many production and environmental issue: cause production cost to rise, cause the COD value of electro-desalting draining and draining oil-containing value to rise, directly influence the qualified discharge that normally carries out and handle back sewage of oil plant water treatment.In recent years,, the desalting dewatering device of ultrasonic dehydration and electric field desalination associating occurred, be used for satisfying the requirement of producing along with the application of ultrasonic technology in crude oil demulsification.
Common electrical oil dewatering salt cellar charging is a multiple feed; Be at least the two-way charging of one-to-two, many persons are by one-to-two, two minutes four again; Octuple charging of four minutes eight etc. again; The purpose of its multiple feed setting is that charging is balanced when keeping crude oil to advance horizontal electrical desalter, prevents short circuit charging or channel, guarantees the electrical desalter smooth operation.
On March 12nd, 2003, disclosed notification number was the CN2539559Y utility model patent, and crude oil ultrasonic wave-electric field associating desalter needs the hyperacoustic sound intensity of control generally to be not more than 0.5W/cm in the production process
2,, the series connection of plural ultrasonic wave active region can be set for the different production condition; Satisfy the different production requirement, still, for the bigger oil plant of crude charging capacity; Only, can not satisfy the hyperacoustic sound intensity of control and generally be not more than 0.5W/cm through the series connection of ultrasonic wave active region
2Specification requirement.On March 9th, 2005 disclosed publication number CN 1589947A application for a patent for invention; The ultrasonic combined effect of following current and adverse current makes the method and the device of oil-water emulsion breakdown of emulsion; In embodiment 1, mention and " according to the different production situation; in order to prolong the ultrasonic wave action time of the crude oil under the flow regime, plural ultrasonic wave active region serial or parallel connection can be set, be used for satisfying the production requirement of different moisture saliferous." this invention is that utility model to aforementioned crude oil ultrasonic wave-electric field associating desalter improves to some extent, and lacks embodiment for the enforcement of the ultrasonic dehydration technology of the electrical desalter of the high throughput of single channel charging.
Development along with novel electric desalting technology; The electrical desalter of one end single channel charging is used aborning, and the ultrasonic wave active region equipment that ultrasonic wave-electro-desalting combination technique adopts also need be designed to single device, and need be designed to the bigger pressure vessel of volume; The design of ultrasonic wave active region also need change the pot type structure into by tubular structure; The problem that exists is hyperacoustic skewness in the ultrasonic wave active region, be easy to cause problems such as emulsification or the demulsification of crude oil and water be not good, and ultrasonic wave active region equipment manufacturing cost raises significantly; Also be not easy to construction and installation, in production operation, also be unfavorable for control.Invent a kind of supporting ultrasonic dehydration equipment of electrical desalter that is fit to an end single channel charging, in order to satisfy the production needs of an end single channel charging electrical desalter.
Summary of the invention
The objective of the invention is to existing ultrasonic wave-electric field combined unit; The method and the device of a kind of single channel charging ultrasonic wave-electro-desalting associating are proposed; When single jar of treating capacity of electro-desalting is the single channel feeding manner than big and electrical oil dewatering salt cellar; Solved in the ultrasonic wave active region hyperacoustic skewness or ultrasonic acoustic is powerful causes the not good problem of emulsification or demulsification in the regulation parameter; The pressure vessel and equipment cost of the ultrasonic wave active region that provides is lower, be convenient to construction and installation, also be convenient to production operation control; Strengthen ultrasonic dehydration and symphyogenetic dehydration of electro-desalting and desalting effect, during realization electrical desalter single channel high throughput and the symphyogenetic commercial Application of ultrasonic dehydration.
The method of a kind of single channel charging ultrasonic wave of the present invention-electro-desalting associating; Comprise electrical desalter, ultrasonic wave active region; It is characterized in that: the mode that crude oil advances electrical desalter is the single channel charging; Advance at crude oil on the pipeline of electrical desalter the parallel ultrasonic wave of single channel charging active region is set, the parallel ultrasonic wave of this single channel charging active region is at least by 1 single ultrasonic wave active region parallel connection, and crude stream is crossed parallel ultrasonic wave active region and uniform distribution in single ultrasonic wave active region; Behind the breakdown of emulsion, crude oil gets into electrical desalter and carries out gravitational settling and/or electric field separates under action of ultrasonic waves.
Single channel charging ultrasonic wave of the present invention active region is formed in parallel by the single ultrasonic wave active region more than 1; The ultrasonic wave that produces acts on crude oil and the mixing and emulsifying thing of water before the electrical desalter into; Produce demulsification; Prolonged the time of oil-water emulsion ultrasonic wave effect, made the abundant breakdown of emulsion of oil-water emulsion.
The ultrasonic wave that is used for the single ultrasonic wave active region of parallel connection is preferably propagated with the uniform sound intensity, and hyperacoustic intensity is at 0.1-0.5w/cm
2Scope, preferred ultrasonic intensity is at 0.2-0.3w/cm
2Scope.
At least 1 ultrasonic transducer is installed at the two ends that are used for the single ultrasonic wave active region of parallel connection respectively; Produce with the crude oil flow direction in the same way or the ultrasonic wave mode of action of reverse following current and adverse current; On the direction of ultrasonic wave radiation; The reflecting surface of ultrasonic wave active region can not be set to curved-surface structure (the for example end socket class formation pattern of curved surface); To prevent to produce hyperacoustic focusing and stack, hyperacoustic focusing and stack can cause oil-water emulsion, and embodiment is that the ultrasonic wave active region is set to the duct type structure preferably.
Each the ultrasonic wave active region version that constitutes the parallel ultrasonic wave of single channel charging active region is consistent.
The volume of each ultrasonic wave active region of the parallel ultrasonic wave of formation single channel charging active region is basic identical.
Each the interconnective mode in ultrasonic wave active region that constitutes the parallel ultrasonic wave of single channel charging active region is consistent.
Single channel charging ultrasonic wave of the present invention active region is made up of with the duct type connected mode the single ultrasonic wave active region more than 1, and single ultrasonic wave active region can link to each other by the duct type welding manner each other, forms the parallel ultrasonic wave of single channel charging active region.
Single channel charging ultrasonic wave of the present invention active region is made up of with the duct type connected mode the single ultrasonic wave active region more than 1, and single ultrasonic wave active region can link to each other by the duct type flange connection each other, forms the parallel ultrasonic wave of single channel charging active region.
Single channel charging ultrasonic wave of the present invention active region is inserted on the pipeline before the electrical desalter through the pipeline by-pass, close the main line valve, when opening the by-pass valve, the mixture of crude oil and water can pass through the parallel ultrasonic wave of single channel charging active region.
Single channel charging ultrasonic wave of the present invention active region can not inserted through by-pass yet and is directly inserted pipeline, and the mixture of crude oil and water can directly pass through the parallel ultrasonic wave of single channel charging active region.
The method and the device of single channel charging ultrasonic wave of the present invention-electro-desalting associating; Its ultrasonic wave active region import distributes material through 1 duct type stock distributor; Play the effect that material distributes, realize that material flows through each ultrasonic wave active region as far as possible relatively uniformly.
The method and the device of single channel charging ultrasonic dehydration of the present invention, its ultrasonic wave active region outlet distributes material through 1 duct type stock distributor, plays the effect that material distributes, and realizes that material flows through each ultrasonic wave active region as far as possible relatively uniformly.
Each the ultrasonic wave active region quantity that constitutes the parallel ultrasonic wave of single channel charging active region is confirmed by the crude charging capacity of electrical desalter; Can constitute by 1 single ultrasonic wave active region; Also can constitute, also can constitute or the like by 3 identical single ultrasonic wave active regions by 2 identical single ultrasonic wave active regions.The ultrasonic intensity of the parallel ultrasonic wave of control single channel active region is at 0.1-0.5w/cm
2In the scope, preferred ultrasonic intensity is at 0.2-0.3w/cm
2In the scope.
General, crude charging capacity can adopt single ultrasonic wave active region less than 1,500,000 tons/year electrical desalter, and single ultrasonic wave active region adopts welding or flange connection directly to link to each other with untreated oil line, the import and export distributor need be set.
General, the electrical desalter that crude charging capacity 150-500 is ten thousand tons/year can adopt 2 single ultrasonic wave active region parallel connections, is provided with and imports and exports the duct type stock distributor.
General, the electrical desalter that crude charging capacity 500-1500 is ten thousand tons/year can adopt 4-6 single ultrasonic wave active region parallel connection, is provided with and imports and exports the duct type stock distributor.
For guaranteeing that hyperacoustic intensity is at 0.1-0.5w/cm
2Scope, preferred ultrasonic intensity is at 0.2-0.3w/cm
2Scope, the power output of scalable processor for ultrasonic wave reaches specification requirement uniformity and best breakdown of emulsion desalting effect.
The parallel ultrasonic wave of single channel charging active region can be installed in the electro-desalting system more than 1 grade at least.
The parallel ultrasonic wave of single channel charging active region can be chosen on the mixed pipeline of profit before the one-level electro-desalting and install.
The parallel ultrasonic wave of single channel charging active region can be chosen on the mixed pipeline of profit before the one-level electrical desalter and install, and simultaneously, also installs on the mixed pipeline of the profit before the secondary electrical desalter.
The parallel ultrasonic wave of single channel charging active region can be chosen on the mixed pipeline of profit before the electro-desalting at different levels such as one-level, secondary, three grades and all install.
The present invention can select one or more levels the parallel ultrasonic dehydration scheme of single channel charging according to the demands of different of variety classes oil property and desalting and dewatering index.
The do not ration the power supply progression of desalination of the method for single channel charging ultrasonic wave of the present invention-electro-desalting associating.
The method of single channel charging ultrasonic wave of the present invention-electro-desalting associating is not limit the progression of parallelly connected ultrasonic wave active region, is made up of the 1 grade of parallel ultrasonic wave of single channel charging active region at least.
In the method for single channel charging electro-desalting of the present invention-ultrasonic combined and the device; Single ultrasonic wave active region is the duct type structure; At least one ultrasonic transducer is respectively installed at the two ends of each pipeline; Produce and profit flow direction following current ultrasonic wave in the same way and reverse adverse current ultrasonic wave respectively, ultrasonic transducer links to each other through the ultrasonic power line with supersonic generator.The ultrasonic wave active region is the duct type structure, and pipeline can be a straight tube, also can be reducer pipe, preferred reducer pipe; This reducer pipe both can be that the two ends diameter is big, and mid diameter is little, also can be that the two ends diameter is little; Mid diameter is big, also can be that an end diameter is big, the little various forms that waits of an end diameter.The cross section of pipeline also can be a different shape, as circular, square etc.Duct type ultrasonic wave active region is connected with the profit pipeline, can weld or multiple connected mode such as flange connection.
Compared with prior art, method of the present invention provides a kind of ultrasonic wave active region that can produce the even sound intensity, and hyperacoustic intensity is at 0.1-0.5w/cm
2Scope, preferred ultrasonic intensity is at 0.2-0.3w/cm
2Scope has guaranteed the effect of desalination and dehydration.Show through commerical test, compare with simple electro-desalting method, through the method and the device of the parallel ultrasonic dehydration of this single channel charging-electro-desalting associating, obtain good desalting and dewatering effect: crude oil takes off the back saliferous can be reduced to 1-3mg/L by 5-10mg/L; Take off the back crude oil water containing and be reduced to 0.1-0.2% by original 0.2-0.3%; Can replace demulsifier fully, the total draining oil-containing of electro-desalting total draining COD value and electro-desalting all reduces more than 50%, and it is obvious to implement the back environmental benefit.
The present invention can be used in the crude oil electric desalting technology in refinery's Crude Oil Processing, and the present invention also can be used in the electric dehydration technology of crude oil.
The present invention can be provided with different parallelly connected schemes according to the difference of electro-desalting crude charging capacity.
The present invention can select one or more levels the parallel ultrasonic dehydration scheme of single channel charging according to the demands of different of variety classes oil property and desalting and dewatering index.
The do not ration the power supply progression of desalination of the method for single channel charging ultrasonic wave-electro-desalting of the present invention and device.
The method of single channel charging ultrasonic wave-electro-desalting of the present invention and device are made up of the 1 grade of parallel ultrasonic wave of single channel charging active region at least.
Description of drawings
Fig. 1 is a typical control process flow diagram of the present invention.
Fig. 2 is 5,000,000 tons of/year two-stage single channel of the present invention charging ultrasonic wave-two-stage electro-desalting flow chart.
Fig. 3 is 1,500,000 tons of/year one-level single channel of the present invention charging ultrasonic wave-two-stage electro-desalting flow chart.
Fig. 4 is 1,500,000 tons of/year two-stage single channel of the present invention charging ultrasonic wave-two-stage electro-desalting flow chart.
Fig. 5 is that desalting effect is taken off in one of 5,000,000 tons of/year one-level single channel of the present invention charging ultrasonic wave-two-stage electro-desalting.
Fig. 6 is that desalting effect is taken off in two of 5,000,000 tons of/year one-level single channel of the present invention charging ultrasonic wave-two-stage electro-desalting.
Fig. 7 is that desalting effect (salt content trend) is taken off in 1,500,000 tons of/year one-level single channel charging ultrasonic wave-secondary electro-desalting two of the present invention.
Fig. 8 is that dehydrating effect (moisture trend) is taken off in 1,500,000 tons of/year one-level single channel charging ultrasonic wave-secondary level electro-desalting two of the present invention.
Among the figure: 1, take off preceding crude oil, 2, the one-level water filling, 3, the one-level static mixer, 4, the one-level mixing valve; 5, the parallel ultrasonic wave of single channel charging active region, 6, ultrasonic transducer, 7, inlet pipeline formula stock distributor, 8, single ultrasonic wave active region; 9, outlet conduit formula stock distributor, 10, the ultrasonic wave switch board, 11, the DCS control system of central control room; 12, one-level electrical desalter, 13, the secondary water filling, 14, the secondary static mixer; 15, secondary mixing valve, 16, the secondary electrical desalter, 17, secondary takes off back crude oil.
The specific embodiment
Embodiment 1
The embodiment in the one-level electro-desalting is united in single channel charging ultrasonic wave-electro-desalting
Shown in Figure 1; Crude oil 1 mixes through one-level static mixer 3 with one-level water filling 2 before taking off; Mix through one-level mixing valve 4 again; Get into the parallel ultrasonic wave of single channel charging active region 5 through the pipeline by-pass via inlet pipeline formula stock distributor 7, the parallel ultrasonic wave of single channel charging active region 5 is made up of a plurality of identical single ultrasonic wave active regions 8, and 8 two ends, single ultrasonic wave active region are separately installed with ultrasonic transducer 6; Ultrasonic transducer 6 is connected with ultrasonic wave controller in the ultrasonic wave switch board 10, the DCS control system 11 control ultrasonic waves outputs of the ultrasonic wave controller in the ultrasonic wave switch board 10 through central control room with show.
Shown in Figure 1; Crude oil mixes the emulsion of formation through behind 5 breakdowns of emulsion of the parallel ultrasonic wave of single channel charging active region with water high strength, draw via outlet conduit formula stock distributor 9, and the end by one-level electrical desalter 12 gets into the one-level electrical desalter again; Oil-water emulsion sedimentation separation under the gravity effect; Or under gravitational settling and high voltage electric field acting in conjunction, separate, realize one-level dehydration-desalination, the discharge at the bottom of the jar of the saline sewage after the one-level dehydration-desalination.After crude oil after the one-level dehydration-desalination is derived from tank deck; After secondary water filling 13 mixes through secondary static mixer 14; Mix through secondary mixing valve 15 again, get into secondary electrical desalter 16, water-oil separating under the effect of high voltage electric field and gravity; The secondary saline sewage is discharged at the bottom of by jar, and secondary takes off back crude oil 17 is derived by tank deck.
Electrical desalter crude oil feeding form is the single channel charging of an end of electrical desalter among Fig. 1.
The parallel ultrasonic wave of single channel charging active region 5 is the duct type structure among Fig. 1, and the parallel ultrasonic wave of single channel charging active region 5 is made up of single ultrasonic wave active region 8, inlet pipeline formula stock distributor 7, the outlet conduit formula stock distributor 9 of the same structure size more than 1.
Inlet pipeline formula stock distributor 7, outlet conduit formula stock distributor 9 can be connected through the mode of welding with single ultrasonic wave active region 8 among Fig. 1, also can be connected by flange.
The duct type structural design has been realized for the electrical desalter of the high throughput of single channel charging in the parallel ultrasonic wave of single channel charging active region among Fig. 1, has avoided being designed to the pot type structure; Solved hyperacoustic skewness in the ultrasonic wave active region; Be easy to cause the emulsification or the inaccessible problem of demulsification of crude oil and water, ultrasonic acoustic is powerful when having solved the associating of ultrasonic wave-electro-desalting causes the not good problem of emulsification or demulsification in the regulation parameter, and ultrasonic wave active region equipment manufacturing cost is lower; Construction and installation both be convenient to; Also be convenient to control, realized the ideal application effect of single channel charging ultrasonic dehydration-electro-desalting associating, can reach desalting and dewatering effect preferably.
Among Fig. 1; Ultrasonic wave controller in the ultrasonic wave switch board 10 is by the power supply energize; Ultrasonic wave controller is supplied with transducer 6 energy, converts electrical energy into hyperacoustic mechanical vibrational energy by transducer 6, through ultrasonic wave active region 8 ultrasonic energy is passed to crude oil and water emulsion.
Hyperacoustic sound intensity can select generally to be not more than 0.8w/cm
2, preferably be not more than 0.5w/cm
2
Generally speaking, frequency of ultrasonic is selected little to the influential effect of profit desalting and dewatering, and frequency is higher, and ultrasonic wave is decayed easily.Therefore the ultrasonic wave of general employing 0.1-50Khz is more suitable.
According to the different production situation, the parallel ultrasonic wave of the single channel charging active region more than 1 can be set before multistage electrical desalter respectively, be used for satisfying the production requirement of different moisture saliferous.
General, the electrical desalter design charging of 1,500,000 tons of/year following treating capacities is the form of one-to-two, can be arranged on the preceding main line of branch line 1 single ultrasonic wave active region 5 is installed, and constitutes the parallel ultrasonic wave of single channel charging active region.
General; Between ten thousand tons/year of the 150-500 treating capacity electrical desalter design charging be the form of one-to-two or two minutes four; Can be arranged on 2 single ultrasonic wave active regions 5 are installed on 2 bye-passes after the main line branch, constitute the parallel ultrasonic wave of single channel charging active region.
General; Between ten thousand tons/year of the 500-1200 treating capacity electrical desalter design charging be two minutes four or four minutes eight form; Can be arranged on 4-6 single ultrasonic wave active region 5 is installed on 4 bye-passes after the main line branch, constitute the parallel ultrasonic wave of single channel charging active region.
For guaranteeing that hyperacoustic intensity is at 0.1-0.5w/cm
2Scope, preferred ultrasonic intensity is at 0.2-0.3w/cm
2Scope, the power output of scalable processor for ultrasonic wave reaches specification requirement uniformity and best breakdown of emulsion desalting effect.
The difference of the density of based on crude, emulsification degree can be provided with the parallel ultrasonic wave of the single channel active region more than 1 respectively before one, two, three electrical desalter, be used for satisfying different production requirements.
The difference of the density of based on crude, emulsification degree can be provided with the parallel ultrasonic wave of a plurality of single channel active region respectively before multistage electrical desalter, be used for satisfying different production requirements.
The pot type structure has been avoided being designed in single channel charging ultrasonic wave of the present invention active region; Ultrasonic wave active region equipment manufacturing cost is lower, both has been convenient to construction and installation, also is convenient to control; Having realized ultrasonic dehydration---the ideal application effect of electro-desalting associating can reach desalting and dewatering effect preferably.
The enforcement in the one-level electro-desalting is united in the single channel charging ultrasonic wave-electro-desalting of certain 5,000,000 tons of/year crude charging capacity
Effect relatively before and after one-level single channel charging ultrasonic wave-electro-desalting Joint Implementation.
The two-stage electro-desalting of oil plant one endfeed of certain 5,000,000 tons of/year treating capacity; Insert the parallel ultrasonic wave of one-level single channel charging active region through the pipeline by-pass; Implement the parallel ultrasonic dehydration of single channel charging in the one-level electro-desalting; The parallel ultrasonic wave of single channel charging active region is made up of the single ultrasonic wave active region of 3 same structure sizes; Crude oil is through behind the one-level static mixer, again through the one-level mixing valve, before the parallel ultrasonic dehydration of single channel charging inserts the one-level electrical desalter through the duct type distributor before taking off; The ultrasonic wave parameter control is by oil plant central control room DCS centralized Control, and DCS is through the control of the ultrasonic wave controller in switch board two ends, ultrasonic wave active region ultrasonic transducer.
With Fig. 1 is example, and the enforcement in the one-level electro-desalting is united in the single channel charging ultrasonic wave-electro-desalting of 5,000,000 tons of/year crude charging capacities, and the simple electro-desalting effect comparison before implementing with this invention is demarcated.The parallel ultrasonic dehydration of single channel charging of 5,000,000 tons/year crude charging capacities is after the enforcement of one-level electro-desalting, and the calibration result of saliferous was as shown in Figure 5 after one-level was taken off, and it is as shown in Figure 6 that secondary takes off the back saliferous.
Visible by Fig. 5, single channel charging ultrasonic wave-electro-desalting is united before the enforcement of one-level electro-desalting, and the one-level electro-desalting is taken off the back saliferous between 6-20mg/L, and is obviously higher; Single channel charging ultrasonic wave-electro-desalting is united after the enforcement of one-level electro-desalting, and the one-level electro-desalting is taken off the back saliferous below 3mg/L, obviously reduces.
Visible by Fig. 6, single channel charging ultrasonic wave-electro-desalting is united before the enforcement of one-level electro-desalting, and saliferous generally about 3mg/L, guaranteed that the index request below the 3mg/L is difficult to reach after the secondary electro-desalting was taken off; Use single channel charging ultrasonic wave-electro-desalting and unite after the one-level electro-desalting, secondary takes off the back saliferous about 1.5mg/L, guarantees to have reached the industry index request below the 3mg/L.
Can find out through demarcating; The single channel charging ultrasonic wave-electro-desalting of 5,000,000 tons of/year crude charging capacities is united after the one-level electro-desalting is implemented; Can replace demulsifier fully; One-level takes off the back salt content in crud oil and secondary takes off back salt content in crud oil reduction more than 50%, takes off the back saliferous and obviously reduces, and can realize the purpose of crude oil advanced desalination.
Through demarcating; The single channel charging ultrasonic wave-electro-desalting of 5,000,000 tons of/year crude charging capacities is united after the enforcement of one-level electro-desalting; Can replace demulsifier fully, the total draining oil-containing of electro-desalting total draining COD value and electro-desalting all reduces more than 50%, and it is obvious to implement the back environmental benefit.
The implementation result in the two-stage electro-desalting is united in the single channel charging ultrasonic wave-electro-desalting of 5,000,000 tons of/year crude charging capacities
The two-stage electro-desalting implementation result of two-stage single channel charging ultrasonic wave-electro-desalting associating and one-level single channel charging ultrasonic dehydration relatively.
Like Fig. 2, the electro-desalting of the single channel charging of certain 5,000,000 tons of/year crude charging capacity is introduced the parallel ultrasonic wave of single channel charging active region through the pipeline by-pass respectively before one-level, secondary electrical desalter.Crude oil is through behind the one-level static mixer before taking off; Again through the one-level mixing valve; Before the parallel ultrasonic wave of single channel charging district inserted the one-level electrical desalter through the duct type distributor, the parallel ultrasonic wave of single channel charging active region was made up of the single ultrasonic wave active region of 3 same structure sizes; One-level is taken off back crude oil through behind the secondary static mixer; Again through the secondary mixing valve; Before the parallel ultrasonic wave of single channel charging district inserted the secondary electrical desalter through the duct type distributor, the parallel ultrasonic wave of single channel charging active region was made up of the single ultrasonic wave active region of 3 same structure sizes.
Two-stage ultrasonic wave parameter control is by central control room DCS centralized Control, and DCS controls two ends, ultrasonic wave active region ultrasonic transducer through the ultrasonic wave controller in the switch board,
Two-stage single channel charging ultrasonic wave-electro-desalting associating is compared with the two-stage electro-desalting implementation result of one-level single channel charging ultrasonic dehydration; Contain salt figure after the secondary electro-desalting of two-stage single channel charging ultrasonic wave-electro-desalting associating is taken off and reduce about 20%, the electro-desalting operation is more stable.
The enforcement in the one-level electro-desalting is united in the single channel charging ultrasonic wave-electro-desalting of 1,500,000 tons of/year crude charging capacities
As shown in Figure 3, the two-stage electro-desalting of crude charging capacity below 1,500,000 tons/year is provided with 1 ultrasonic wave active region before can being chosen in the one-level electrical desalter; The ultrasonic wave active region connects through pipeline flange or welding inserts, and the ultrasonic wave active region is inserted through the pipeline by-pass, after can closing the main line valve, opening the by-pass valve; The mixture of crude oil and water receives hyperacoustic demulsification in the ultrasonic wave active region, behind crude oil and the water emulsion breakdown of emulsion through the ultrasonic wave active region; Get into the one-level electrical desalter, water-oil separating under the effect of high voltage electric field, then; Water is discharged at the bottom of by jar, and one-level is taken off back crude oil has tank deck to discharge.One-level is taken off back crude oil again with after water mixes, entering secondary electrical desalter desalting and dewatering.
As shown in Figure 7; The single channel charging ultrasonic wave-electro-desalting of certain 1,500,000 tons of/year crude charging capacity of factory is united after the one-level electro-desalting is implemented; Ultrasonic dehydration can substitute demulsifier fully; Under the situation that saliferous is suitable basically before crude oil takes off, the crude oil secondary takes off the back saliferous is reduced to below the average 3mg/L by original average 4.6mg/L, and the effect of strengthening desalination is obvious.
As shown in Figure 8; The single channel charging ultrasonic wave-electro-desalting of certain 1,500,000 tons of/year crude charging capacity of factory is united after the one-level electro-desalting is implemented; Ultrasonic dehydration can substitute demulsifier fully, and the crude oil secondary takes off that the back is moisture on average to be reduced on average below 0.2% by original more than 0.2%, and it is obvious to strengthen dehydrating effect.
Claims (15)
1. the method for a single channel charging ultrasonic wave-electro-desalting associating; Comprise electrical desalter, ultrasonic wave active region; It is characterized in that: the mode that crude oil advances electrical desalter is the single channel charging; Advance at crude oil on the pipeline of electrical desalter the parallel ultrasonic wave of single channel charging active region is set, the parallel ultrasonic wave of this single channel charging active region is at least by 1 single ultrasonic wave active region parallel connection, and crude stream is crossed parallel ultrasonic wave active region and uniform distribution in single ultrasonic wave active region; Behind the breakdown of emulsion, crude oil gets into electrical desalter and carries out gravitational settling and/or electric field separates under action of ultrasonic waves.
2. method according to claim 1; At least 1 ultrasonic transducer is installed at the two ends that it is characterized in that being used for the single ultrasonic wave active region of the parallel ultrasonic wave of single channel charging active region respectively; Produce and crude oil flow direction following current ultrasonic wave in the same way and reverse adverse current ultrasonic wave, on the direction of ultrasonic wave radiation, the reflecting surface of ultrasonic wave active region can not be set to curved-surface structure; To prevent producing hyperacoustic focusing and stack, prevent to cause oil-water emulsion.
3. method according to claim 1 is characterized in that on the pipeline before the parallel ultrasonic wave of single channel charging active region is through pipeline by-pass access electrical desalter.
4. method according to claim 1 is characterized in that on the pipeline before electrical desalter is directly inserted in single channel charging ultrasonic wave active region.
5. method according to claim 1 is characterized in that the active region import of the parallel ultrasonic wave of single channel charging distributes material through 1 duct type stock distributor, and outlet distributes material to get into electrical desalter through 1 duct type stock distributor.
6. method according to claim 1 is characterized in that the parallel ultrasonic wave of single channel charging active region is by single ultrasonic wave active region parallel connection identical more than 1.
7. method according to claim 1 is characterized in that installing on the mixed pipeline of profit before the parallel ultrasonic wave of single channel charging active region can be chosen in electro-desalting at different levels such as one-level, secondary, three grades.
8. method according to claim 1 is characterized in that the parallel ultrasonic wave of single channel charging active region is the duct type structure and is connected with the profit pipeline that single ultrasonic wave active region is the duct type structure of straight pipe type.
9. method according to claim 1 is characterized in that the parallel ultrasonic wave of single channel charging active region is the duct type structure and is connected with the profit pipeline that single ultrasonic wave active region is the duct type structure of reducing tubulose.
10. method according to claim 1, the ultrasonic wave that it is characterized in that being used for the single ultrasonic wave active region of the parallel ultrasonic wave of single channel charging active region is propagated with the uniform sound intensity, and hyperacoustic intensity is at 0.1-0.5W/cm
2Scope.
11. device that is used in the said single channel charging ultrasonic wave of one of claim 1-10-electro-desalting integrated processes; It is characterized in that comprising electrical desalter, ultrasonic wave active region; It is characterized in that the mode that crude oil advances electrical desalter is the single channel charging; Advance at crude oil on the pipeline of electrical desalter the parallel ultrasonic wave of single channel charging active region is set, the parallel ultrasonic wave of this single channel charging active region is at least by 1 single ultrasonic wave active region parallel connection.
12. device according to claim 11 is characterized in that at least one ultrasonic transducer is installed at the two ends of said single ultrasonic wave active region respectively, produces and crude oil flow direction following current ultrasonic wave in the same way and reverse adverse current ultrasonic wave.
13. device according to claim 11 is characterized in that the active region import of the parallel ultrasonic wave of single channel charging is provided with 1 duct type stock distributor and distributes material, outlet is provided with 1 duct type stock distributor and distributes material to get into electrical desalter.
14. device according to claim 11 is characterized in that the parallel ultrasonic wave of single channel charging active region is by 1 above structure is identical, volume is identical identical with connected mode single ultrasonic wave active region parallel connection.
15. device according to claim 11 is characterized in that on the mixed pipeline of profit before the parallel ultrasonic wave of single channel charging active region is installed in electro-desalting at different levels such as one-level, secondary, three grades.
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| CN103555364A (en) * | 2013-10-25 | 2014-02-05 | 西南石油大学 | Method for dechlorinating crude oil through phonochemical combination in oil plant |
| 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 |
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| CN110205158A (en) * | 2019-05-31 | 2019-09-06 | 青岛贝索科技有限公司 | The control method of electro-desalting ultrasonic wave |
| CN110216110A (en) * | 2019-05-31 | 2019-09-10 | 青岛贝索科技有限公司 | A kind of method and device that ultrasonic wave prevents electrical desalter greasy filth from depositing |
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| 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 |
| CN111825265A (en) * | 2019-04-23 | 2020-10-27 | 中国石油化工股份有限公司 | Oilfield produced water treatment method |
| CN110205158A (en) * | 2019-05-31 | 2019-09-06 | 青岛贝索科技有限公司 | The control method of electro-desalting ultrasonic wave |
| CN110216110A (en) * | 2019-05-31 | 2019-09-10 | 青岛贝索科技有限公司 | A kind of method and device that ultrasonic wave prevents electrical desalter greasy filth from depositing |
| CN110205158B (en) * | 2019-05-31 | 2021-07-23 | 青岛贝索科技有限公司 | Method for controlling ultrasonic wave for electric desalting |
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Application publication date: 20120516 |