CN201354360Y - Device for removing electric desalting emulsion layer - Google Patents
Device for removing electric desalting emulsion layer Download PDFInfo
- Publication number
- CN201354360Y CN201354360Y CNU200920104845XU CN200920104845U CN201354360Y CN 201354360 Y CN201354360 Y CN 201354360Y CN U200920104845X U CNU200920104845X U CN U200920104845XU CN 200920104845 U CN200920104845 U CN 200920104845U CN 201354360 Y CN201354360 Y CN 201354360Y
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- distribution pipe
- distribution
- responsible
- emulsion
- described distribution
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Abstract
The utility model provides a device for removing an electric desalting emulsion layer, belonging to the oil, petrochemical and power generation fields. The device includes a main emulsion liquid discharge pipe and a distribution pipe; the distribution pipe comprises a main distribution pipe and a branch distribution pipe; small holes which are communicated with the distribution pipe are evenly distributed on the wall of the distribution pipe; the distribution pipe is installed above a crude oil tank feeding distributor in an electric desalting tank and horizontally arranged at the position of an oil-water interface in the tank, and the emulsion liquid collected by the distribution pipe is discharged out of the electric desalting tank through the main discharge pipe. By utilizing the device, too thick emulsion liquid can be directly discharged out, thereby maintaining the separation effect of a weak current field so as to ensure the steady operation of a strong current field, lead the electric desalting system to be capable of running smoothly for a long term, and guarantee the long-periodic production of atmospheric and vacuum distillation units and follow-up devices of the whole plant.
Description
Technical field
The utility model belongs to fields such as oil, petrochemical complex and generating, is specifically related to a kind of eliminating electric desalting emulsion layer device.
Background technology
Crude oil can carry water, NaCl, CaCl in exploitation and transportation
2, MgCl
2Can be dissolved in mostly in the contained water of crude oil Deng salt.Crude oil water containing too much can cause the distillation tower fluctuation of service, when serious even cause towards the tower accident, can increase the device energy expenditure simultaneously.There is very big harm in salt in the crude oil to the course of processing, causes equipment corrosion, interchanger and process furnace tube wall to form salt crust, increases the equipment pressure drop, reduces heat transfer efficiency, also can cause device to be stopped work by blocking pipeline when serious.Therefore in refinery, all can be provided with the desalting and dewatering facility, crude oil is carried out pre-treatment.
Because the salt major part in the crude oil is dissolved in the contained water, so desalination and dehydration are carried out simultaneously.In order to remove the salt grain that is suspended in the crude oil, make it to be dissolved in the water also needing to add a certain amount of water before the desalting and dewatering to crude oil, remove with water then.Therefore the essence of desalting and dewatering process is dewatered exactly.Wet oil generally all is more stable Water in Oil emulsion, be that water is scattered in the successive oil phase with the droplet form, and stablized by naturally occurring emulsifying agent contained in the crude oil (as bituminous matter, colloid, naphthenic acid etc.), have only and destroyed this emulsified state, just can make water droplets coalescence, reach the purpose of oily water separation.
The purpose of injecting emulsion splitter in the crude oil is exactly to destroy the oil-water emulsion state of crude oil, its effect is opposite with naturally occurring emulsifying agent in the crude oil, can concentrate rapidly in water-oil interface, and compete with emulsifying agent, original more firm adsorption film is weakened even destroy, little water droplet is able to coalescent, and then settlement separate.
In general, the process of desalting and dewatering is carried out in electrical desalter.As shown in Figure 1, battery lead plate 5 is set forming electric field in the electrical desalter, effect of electric field is promote the destruction of emulsion and water droplet coalescent.When crude oil emulsion passes through high-voltage electric field, on the disperse phase water particle, form induced charge, external phase forms dielectric.Under the effect of induction field, water particle keeps electric charge always, and it mainly acts on is dipole coalescence.Therefore when colliding, water droplet just can overcome the obstacle of emulsifying film owing to the effect of coalescence force, gather each other, at the bottom of making drop diameter constantly become big and being settled down to jar, and then make profit obtain separating, oil after the separation is on the upper strata, is pooled to outlet pipe and sends electrical desalter by going out oil trap 4.Be divided into different work areas in the electrical desalter.Wherein weak electric field area is an important step in the demineralising process, because containing the crude oil of small water droplet in this layer moves upward, coalescent in whole electrical desalter simultaneously, as to settle down big water droplet, also will be by this district to being lowered into water layer, therefore the change of moisture content of bottom-up emulsion is very big in the weak electric field area, the proportion of the high aqueous emulsion in its underpart, viscosity and electroconductibility have significant change, usually be referred to as the emulsification liquid layer, the situation of this layer is very big to the quiet run influence of highfield.
Because of the stability of various crude oil emulsions exists than big difference.Though add the stability that emulsion splitter can destroy emulsion to a certain extent in crude oil, demulsification is also not all very good, and the operational condition of electric desalting also directly has influence on the thickness of emulsification liquid layer.
In case having only by adjusting operational condition, the phenomenon of generation emulsification liquid layer thickening in operating process, present way improve this undesirable condition to a certain extent, directly not effective means elimination emulsification liquid layer.When the emulsification liquid layer of thickening for a long time can not be controlled, will form stable emulsion, be difficult to eliminate again, thereby have influence on the operation of highfield, and then make the desalting and dewatering deleterious.
Specifically, in the prior art, the patent No. is the automatic ventilation equipment that discloses in the patent of CN271830 in a kind of granary.This device has a ventilation main pipe line, it is characterized in that it connects with the branch vent road that several are covered with aperture, and the draught fan by wind force that can revolve three-sixth turn is installed on the top of ventilation main pipe line.Another patent No. is to disclose a kind of floating oil recovery apparatus of going up in the patent of JP2004305933.This device principle of operation is: 1) the liquid level come-up flow in the collection cups, has suction device that oil in the cup is attracted in collection cups and floats oil recovery apparatus; 2) suction device is that a vacuum tank links to each other with vacuum extractor, will receive floating oiling by the action of vacuum extractor air intake-exhaust valve and be recycled to jar, sends by the magnetic valve switching of pot bottom again.
The utility model content
The purpose of this utility model is to solve a difficult problem that exists in the above-mentioned prior art, a kind of eliminating electric desalting emulsion layer device is provided, emulsion thickening in finding electrical desalter like this, and when being difficult to improve situation again, a kind of means of direct elimination emulsion have just been increased by adjusting operational condition.
The utility model is achieved through the following technical solutions:
A kind of device that is used to get rid of the electric desalting emulsion layer, this device comprises emulsion discharge manifold and distribution pipe; Described distribution pipe comprises distributing to be responsible for and distribution arms, and the described distribution person in charge and distribution arms are installed in the crude oil feeding sparger top in the electrical desalter, and horizontally disposed water-oil interface place in jar; Described distribution is responsible for axial arranged along electrical desalter, and described distribution arms links to each other with the person in charge that distributes, and described emulsion discharge manifold is used for the emulsion that the distribute person in charge and distribution arms are collected is discharged outside the electrical desalter; For the abundant emulsion of collecting, uniform aperture on described distribution pipe tube wall, described aperture and described distribution pipe connect.
It is one or one group that described distribution is responsible for, and distribution arms is one group, and distribution arms is connected with symmetry or alternative form with the person in charge that distributes; Described distribution arms is distributed on the water-oil interface place.
The arrangement form that described distribution is responsible for is determined according to electrical desalter tank body size; The spacing range that one component cloth is responsible between any two is 100mm to 1000mm, and the caliber of being responsible for that distributes is not more than DN80.In order fully to get rid of emulsion layer, according to the needs of electrical desalter tank body size, the size of described distribution arms changes with the end socket dimensional change at the pot body closing end position, as far as possible the end socket position is covered with assurance; One component cloth arm spacing range between any two is 100mm to 1000mm, and the caliber of distribution arms is not more than DN50.
Described aperture is an arbitrary shape, and its aperture determines that according to the caliber of described distribution pipe minimum is 5mm; It is 100mm to 1000mm that described aperture is axially gone up the spacing range that distributes along described distribution pipe; The distributed quantity of described aperture on described distribution pipe circumference determined according to the aperture and the distribution consistency degree of described distribution pipe; The layout of described aperture on described distribution pipe tube wall determined according to the situation that is provided with of described distribution pipe, adopts symmetric arrangement or plug hole to arrange that principle guarantees that exactly aperture is evenly distributed as far as possible on water-oil interface.
Described emulsion discharge manifold is one or one group, and its caliber is not more than the caliber that described distribution is responsible for.The mode of communicating of described emulsion discharge manifold and described distribution pipe has multiple, and wherein a kind of mode is that the described distribution person in charge directly is connected with described emulsion discharge manifold, and described distribution arms is responsible for by branch and is connected with described emulsion discharge manifold.Another kind of mode is, this device also comprises collecting tubule, and described collecting tubule is connected with the described distribution person in charge and emulsion discharge manifold respectively, is used for the described distribution person in charge is connected with the emulsion discharge manifold.
The principle of work of the utility model device is: when having emulsion layer in electrical desalter, this device should be immersed in the emulsion layer, because the difference of described distribution pipe external and internal pressure, emulsion enters in the distribution pipe by the perforate on the described distribution pipe, is discharged outside the electrical desalter by the emulsion discharge manifold at last.
The utility model with the key distinction of patent CN271830 is: used field is different fully, and one is ventilation plant, and one is pumping equipment; The utility model need not the induced draft fan device, by moving from baric flow.
The utility model is for the JP2004305933 key distinction with the patent No.: the discharge opeing mode is different fully, and one is the gravity flow discharge opeing, and one is the power discharge opeing; Device structure is different fully, the utility model be on the liquid layer face, establish be responsible for and take-off pipe by the discharge of flowing automatically again of perforate drainage on take-off pipe.And the existing oil spill skimmer of going up is oil to be introduced collection cups discharge through the vacuum pump suction again.Therefore, prior art does not all provide directly effective means and eliminates emulsion layer.
Generally speaking, compared with prior art, the beneficial effects of the utility model are: utilize this device blocked up emulsion can be directly emitted, thereby keep the separating effect of weak electric field, to guarantee the stable operation of highfield, make the electric desalting system be able to smooth long term running, guarantee the long period production of atmospheric and vacuum distillation unit and full factory follow up device.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the electrical desalter cross sectional representation
Fig. 2 is the structure diagram of the device embodiment 1 that provides of the utility model
Fig. 3 is the structure diagram of the device embodiment 2 that provides of the utility model
Fig. 4 is the device distribution pipe perforate synoptic diagram that the utility model provides
Wherein: 1-emulsion discharge equipment, 2-emulsion discharge manifold, 3-crude oil feeding sparger, 4-goes out oil trap, 5-battery lead plate, the 6-person in charge that distributes, 7-distribution arms, 8-collecting tubule, 9-aperture, 10-distribution pipe; 11-water purification layer, the 12-water layer, 13-water-oil interface (emulsification liquid layer), the 14-oil reservoir, weak electric field area, the 15-oil reservoir, the forceful electric power place, the 16-oil reservoir purifies oil reservoir, and T-sees enlarged view 4, and 17-is around the pipe perforate.
Embodiment
A kind of device 1 (as shown in Figure 1) that is used to get rid of the electric desalting emulsion layer, specifically, this device comprises emulsion discharge manifold 2 and distribution pipe 10 as shown in Figure 2; Described distribution pipe 10 comprises the distribute person in charge 6 and distribution arms 7.As shown in Figure 1, the described distribution person in charge 6 and distribution arms 7 are installed in crude oil feeding sparger 3 tops in the electrical desalter, and horizontally disposed water-oil interface place in jar.As Fig. 2 or shown in Figure 3, the described distribution person in charge 6 is axial arranged along electrical desalter, and described distribution arms 7 links to each other with the person in charge 6 that distributes, and described emulsion discharge manifold 2 is used for the emulsion of the distribute person in charge 6 and distribution arms 7 collections is discharged outside the electrical desalter; For the abundant emulsion of collecting, uniform aperture 9 on described distribution pipe 10 tube walls, described aperture 9 connects with described distribution pipe 10.
It is one group that described distribution is responsible for 6, and distribution arms 7 is one group, distribution arms 7 with distribute be responsible for 6 connect and compose staggered (as Fig. 2) or symmetry (as Fig. 3) form; Described distribution arms 7 is distributed on the water-oil interface place.
The described distribution person in charge's 6 arrangement form is determined according to electrical desalter tank body size; Two spacing ranges of being responsible between 6 that distribute are 100mm to 1000mm, and the person in charge's 6 that distributes caliber is not more than DN80.One component cloth arm 7 spacing range between any two is 100mm to 1000mm, and the caliber of distribution arms 7 is not more than DN50.
As shown in Figure 4, described aperture 9 is an arbitrary shape, and its aperture determines that according to the caliber of described distribution pipe 10 minimum is 5mm; It is 100mm to 1000mm that described aperture 9 is axially gone up the spacing range that distributes along described distribution pipe 10; The distributed quantity of described aperture 9 on described distribution pipe 10 circumference determined according to the caliber and the distribution consistency degree of described distribution pipe 10.The layout of described aperture 9 on described distribution pipe 10 tube walls determined according to the situation that is provided with of described distribution pipe 10, can adopt symmetric arrangement or plug hole to arrange that principle guarantees that exactly aperture 9 is evenly distributed as far as possible on water-oil interface.The perforate mode adopts around the pipe perforate, and what is called is meant perforate on the circumference that is centered around pipe around the pipe perforate, and open-cellular form can be symmetric, also can interlock.Fig. 4 provided alternative form around the pipe perforate, the hole that wherein is coated with shade refers to the hole of opening at the pipe back side.
Described emulsion discharge manifold 2 is one, and its caliber is not more than described distribution and is responsible for 6 caliber.The mode of communicating of described emulsion discharge manifold 2 and described distribution pipe 10 has that multiple, shown in Figure 2 embodiment 1 and embodiment's 2 shown in Figure 3 provided wherein a kind of mode of communicating respectively.
There is following difference between embodiment 1 shown in Figure 2 and the embodiment 2 shown in Figure 3: among (1) embodiment 1, it is two that described distribution is responsible for 6, directly be connected with described emulsion discharge manifold 2 respectively, described distribution arms 7 is responsible for 6 by branch and is connected with described emulsion discharge manifold 2.Like this, the emulsion of collecting from distribution arms 7 apertures is introduced in the person in charge 6 that distributes, and is responsible for the emulsion of collecting in 6 with distributing again and enters emulsion discharge manifold 2 together, at last by outside emulsion discharge manifold 2 drain tanks.(2) in embodiment 2, it is 2 that described distribution is responsible for 6, is linked to each other by collecting tubule 8 between them.Described collecting tubule 8 is connected with the described distribution person in charge 6 and emulsion discharge manifold 2 respectively, like this, the emulsion of collecting from distribution arms 7 apertures 9 enters respectively earlier in 2 persons in charge 6 that distribute, being responsible for the emulsion of collecting in 6 with distributing again enters in the described collecting tubule 8 together, enter emulsion discharge manifold 2 from collecting tubule 8 then, outside emulsion discharge manifold 2 drain tanks.(3) as shown in Figure 3, in order fully to get rid of emulsion layer, according to the needs of electrical desalter tank body size, the size of described distribution arms 7 changes with the end socket dimensional change at the pot body closing end position, the end socket position is covered with assurance as far as possible.For large-scale electrical desalter, the form of preferred embodiment 2.
Technique scheme is two kinds of embodiments of the present utility model, for those skilled in the art, on the basis that the utility model discloses application method and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the utility model, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (8)
1. device that is used to get rid of the electric desalting emulsion layer, it is characterized in that: this device comprises emulsion discharge manifold and distribution pipe; Described distribution pipe comprises distributing to be responsible for and distribution arms, and the described distribution person in charge and distribution arms are installed in the crude oil feeding sparger top in the electrical desalter, and horizontally disposed water-oil interface place in jar; Described distribution is responsible for axial arranged along electrical desalter, and described distribution arms links to each other with the person in charge that distributes, and described emulsion discharge manifold is used for the emulsion that the distribute person in charge and distribution arms are collected is discharged outside the electrical desalter; Uniform aperture on the described distribution pipe tube wall, described aperture and described distribution pipe connect.
2. device according to claim 1 is characterized in that: it is one or one group that described distribution is responsible for, and distribution arms is one group, distribution arms with distribute be responsible between to interlock or symmetric form is connected; Described distribution arms is distributed on the water-oil interface place.
3. device according to claim 2 is characterized in that: the spacing range that a described component cloth is responsible between any two is 100mm to 1000mm, and the caliber of being responsible for that distributes is not more than DN80.
4. device according to claim 2 is characterized in that: described distribution arms is covered with at the pot body closing end position; One component cloth arm spacing range between any two is 100mm to 1000mm, and the caliber of distribution arms is not more than DN50.
5. according to the arbitrary described device of claim 1 to 4, it is characterized in that: the minimum 5mm of being of described small aperture; It is 100mm to 1000mm that described aperture is axially gone up the spacing range that distributes along described distribution pipe; The layout of described aperture on described distribution pipe tube wall adopts symmetric arrangement or plug hole to arrange.
6. device according to claim 5 is characterized in that: described emulsion discharge manifold is one or one group, and its caliber is not more than the caliber that described distribution is responsible for.
7. device according to claim 6 is characterized in that: described distribution is responsible for and directly is connected with described emulsion discharge manifold, and described distribution arms is responsible for by branch and is connected with described emulsion discharge manifold.
8. device according to claim 6 is characterized in that: this device also comprises collecting tubule, and described collecting tubule is connected with the described distribution person in charge and emulsion discharge manifold respectively, and described distribution is responsible for and is connected with the emulsion discharge manifold by collecting tubule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920104845XU CN201354360Y (en) | 2009-01-09 | 2009-01-09 | Device for removing electric desalting emulsion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920104845XU CN201354360Y (en) | 2009-01-09 | 2009-01-09 | Device for removing electric desalting emulsion layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201354360Y true CN201354360Y (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920104845XU Expired - Lifetime CN201354360Y (en) | 2009-01-09 | 2009-01-09 | Device for removing electric desalting emulsion layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201354360Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046381A (en) * | 2013-03-15 | 2014-09-17 | 中石化洛阳工程有限公司 | Inferior crude oil desalting and dewatering pretreatment technology |
| CN108728158A (en) * | 2017-04-14 | 2018-11-02 | 中国海洋石油集团有限公司 | Wet crude separator and method and three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank |
-
2009
- 2009-01-09 CN CNU200920104845XU patent/CN201354360Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104046381A (en) * | 2013-03-15 | 2014-09-17 | 中石化洛阳工程有限公司 | Inferior crude oil desalting and dewatering pretreatment technology |
| CN108728158A (en) * | 2017-04-14 | 2018-11-02 | 中国海洋石油集团有限公司 | Wet crude separator and method and three phase separation equipment, free water removal equipment, electro-dewatering apparatus and settling tank |
| CN108728158B (en) * | 2017-04-14 | 2020-08-14 | 中国海洋石油集团有限公司 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: Sinopec Engineering Incorporation Patentee after: China Petrochemical Group Corp. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Engrg Construction Co., SINOPEC Patentee before: China Petrochemical Group Corp. |
|
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SINOPEC ENGINEERING INCORPORATION Effective date: 20130114 Owner name: SINOPEC ENGINEERING INCORPORATION Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20130114 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100728 CHAOYANG, BEIJING TO: 100101 CHAOYANG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130114 Address after: Anhui Beili Anyuan 21 No. 100101 Beijing Chaoyang District City Patentee after: Sinopec Engineering Incorporation Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Sinopec Engineering Incorporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091202 |