CN110548306B - Aging oil vacuum film evaporation device - Google Patents
Aging oil vacuum film evaporation device Download PDFInfo
- Publication number
- CN110548306B CN110548306B CN201810551779.4A CN201810551779A CN110548306B CN 110548306 B CN110548306 B CN 110548306B CN 201810551779 A CN201810551779 A CN 201810551779A CN 110548306 B CN110548306 B CN 110548306B
- Authority
- CN
- China
- Prior art keywords
- oil
- spray pipe
- conical
- aging
- degassing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to an aging oil vacuum film evaporation device, which is characterized in that: the device is provided with a tank body, the device is provided with an oil inlet and an oil outlet, a hollow cylindrical degassing element formed by overlapping a plurality of layers of hollow disc structures is arranged in the device, the hollow disc is provided with a conical hole for connecting the upper surface and the lower surface, and a conical different hole structure is formed by connecting conical through holes in the degassing element; the hollow cylinder of the degassing element is sleeved on the heating sleeve; the extraction opening on the device is connected with a gas-liquid separation tank through a pipeline, and the gas-liquid separation tank is connected with a vacuum pump. The invention can efficiently break the emulsified state of the aging oil and realize rapid dehydration in a large proportion, so that the aging oil is regenerated into crude oil which can be exported.
Description
Technical Field
The invention relates to an oil-water separation device, in particular to an aging oil vacuum film evaporation device.
Background
A considerable part of crude oil in the process of exploitation and transportation of an offshore oil field is converted into aging oil due to various reasons, the physical and chemical qualities of the oil are changed to cause the oil to be unusable, mechanical impurities and silt contained in the aging oil have conductivity, serious discharge accidents which can cause electric dehydration equipment are placed for a long time, in addition, a large amount of sulfate reducing bacteria can be bred in the aging oil, and the equipment and pipelines of the oil field can be corroded if the aging oil is not sterilized completely and enters the equipment and the pipelines.
The difficulty of treating aged oils is manifested in: firstly, the aging oil is a water-in-oil (W/O) emulsion with complex components and extremely high stability, the average water content is more than 30%, and the water content of the export crude oil is not higher than 0.5% according to the export standard of the crude oil, so that the treatment of the aging oil has extremely high requirements on dehydration rate, and the common technical means is difficult to realize; secondly, the aging oil contains a large amount of colloid, asphaltene and mechanical impurities with strong conductivity, and the components are adsorbed on an oil-water interface film, so that emulsion breaking is difficult, and oil-water separation of the aging oil is not facilitated; thirdly, the colloid and asphaltene lead the aging oil to become sticky and have extremely poor fluidity, which is not beneficial to large-scale treatment.
A large-scale centralized treatment station is established abroad, and the aging oil is treated by a centrifugal sedimentation method, which has very high efficiency, but also has some defects, such as high operation cost, long treatment time, complex equipment structure, large occupied area, high operation and maintenance requirements and the like. The domestic petrochemical industry uses the traditional chemical process to treat the aging oil, and adopts a thermochemical sedimentation method to separate oil from water, so that the treatment time is long, the energy consumption is high, the cost is high, and secondary discharge pollution is possibly caused. Most importantly, the method is only suitable for treating the aging oil of onshore oil fields, but is not suitable for online treatment of the aging oil of offshore production platforms.
Disclosure of Invention
The invention provides an aging oil vacuum thin film evaporation device, aiming at solving the defects of the existing aging oil treatment technology, and being capable of efficiently breaking the emulsified state of the aging oil and realizing rapid dehydration in a large proportion so as to regenerate the aging oil into crude oil capable of being transported outside.
The invention is realized by the following technical scheme:
an aging oil vacuum film evaporation device is characterized in that: the device is provided with a tank body, the device is provided with an oil inlet and an oil outlet, a hollow cylindrical degassing element formed by overlapping a plurality of layers of hollow disc structures is arranged in the device, the hollow disc is provided with a conical hole for connecting the upper surface and the lower surface, and a conical different hole structure is formed by connecting conical through holes in the degassing element; the hollow cylinder of the degassing element is sleeved on the heating sleeve; the extraction opening on the device is connected with a gas-liquid separation tank through a pipeline, and the gas-liquid separation tank is connected with a vacuum pump.
The tapered through-hole of the hollow disk has a variety of maximum and minimum diameters.
The self-rotating material distributor connected with the oil inlet is positioned above the degassing element, a spray pipe of the self-rotating material distributor is connected with a spray pipe interface through a spray pipe steering joint of a ratchet structure, a spray nozzle of the spray pipe faces to a guide plate at the end part of a rocker arm, the rocker arm is rotatably sleeved on a rocker arm shaft extending out of the spray pipe, two ends of a return spring are fixedly arranged on the spray pipe and the rocker arm respectively, and the other end part of the rocker arm corresponds to a spray pipe baffle.
The device is connected with a preheating tank with an electric heater inside through an oil inlet pipe with an oil inlet, a valve and a gear oil suction pump, and the end part of the oil inlet pipe in the device is connected with a self-rotating material distributor.
The heating sleeve is internally provided with a ceramic heating ring.
The invention has the advantages that:
1: the invention can break the emulsification state of the aging oil, realizes the high-efficiency and large-proportion dehydration of the aging oil, does not need to add any chemical demulsifier, and has little pollution to the environment;
2: by using the device, the aging oil flows in the staggered tapered different-hole structure in an extremely-thin liquid film shape, and the heating device gradually transfers heat to heat the liquid film of the oil liquid so as to quickly evaporate the moisture in the oil liquid;
3: the device can be used for circularly dehydrating, and has low operation cost;
4: the device has the advantages of simple structure, high purification efficiency, small volume, simple operation and long service life, and is suitable for online dehydration treatment of the aging oil of the offshore platform.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a spin-on material distributor of the present invention;
FIG. 3 is a schematic view of the overall structure of the degassing element of the present invention;
FIG. 4 is a schematic view of a cross-tapered different pore structure of a degassing element according to the present invention.
Wherein: 1. a preheating tank; 2. an oil inlet and a valve; 3. a gear oil suction pump; 4. a tank body top end cover; 5. a self-rotating material distributor; 6. a degassing element; 7. heating the sleeve; 8. a bottom end cover of the tank body; 9. an oil outlet and a valve; 10. an air extraction opening; 11. a device; 12. a pressure limiting valve; 13. a gas-liquid separation tank; 14. a vacuum pump; 15. a temperature sensor; 16. an electric heater.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor.
As shown in fig. 1:
the apparatus 11 is in the shape of a can body having a can body top end cap 4 and a can body bottom end cap 8, the can body top end cap 4 and the can body bottom end cap 8 being bolted to the can body 11 and sealed with high temperature resistant seal rings.
The device 11 is connected with the preheating tank 1 through an oil inlet pipeline provided with an oil inlet, a valve 2 and a gear oil suction pump 3, the end part of the pipeline positioned in the device 11 is provided with a self-rotating material distributor 5, the self-rotating material distributor 5 is positioned above a degassing element 6, a heating sleeve 7 is arranged in the degassing element in a penetrating way, the bottom of the device 11 is provided with an oil outlet and a valve 9, an air pumping hole 10 on the device 11 is connected with a gas-liquid separation tank 13 through a pipeline provided with a pressure limiting valve 12, and the gas-liquid separation tank 13 is connected with a vacuum pump 14.
The self-rotating material distributor 5 is connected with an oil inlet pipeline through threads, the oil inlet pipeline is welded on the top end cover 4 of the tank body, and the gear oil suction pump 3 provides pressure required by oil liquid injection.
The ceramic heating ring is arranged in the heating sleeve 7, heat generated by the heating ring is transferred to the oil through the degassing element 6, heat preservation (evaporation and heat absorption) of the oil in the evaporation process is realized, and the heating sleeve 7 is directly welded on the bottom end cover 8 of the tank body so as to avoid contact between the oil and the heating element. The heating sleeve 7 can provide the oil heat preservation effect, the oil can be maintained at 70 ℃ in the evaporation process, and the oil is ensured not to influence the evaporation rate due to the heat absorption and temperature reduction of evaporation
Other areas of the device 11 where leaks may occur are coated with a high temperature sealant.
Before the device 11 is used, the aging oil to be treated is heated to a certain temperature (60 ℃) in the preheating tank 1 by the electric heater 16 to increase the fluidity of the aging oil, the vacuum pump 14 and the heating sleeve 7 are started in advance, and the oil inlet and the valve 2 are opened after the interior of the device 11 reaches the preset temperature (about 70 ℃) and the vacuum degree (about 70.5 kpa).
When the device 11 is operated, the primarily preheated material is heated by the electric heater 16 in the preheating tank 1, then enters the device 11 through the oil inlet and the valve 2 and the gear oil suction pump 3, and then uniformly flows into the degassing element 6 through the self-rotating material distributor 5. Due to the staggered tapered different-hole structure and the heat conduction characteristic of the degassing element 6, the oil forms a flowing liquid film in the degassing element 6 and is gradually heated, under the condition that the vacuum degree is about 70.5kpa, the moisture in the oil liquid film reaches the evaporation temperature (about 70 ℃), the moisture is evaporated into water vapor, a gas-liquid mixed phase is pumped out through the air pumping hole 10 under the action of the vacuum pump 14, the separation of mist oil drops and the water vapor is realized through the gas-liquid separation tank 13, and finally the vapor is pumped out by the vacuum pump 14, so that the purpose of oil-water separation of the aging oil is achieved. The aging oil is essentially crude oil emulsion with complex components and contains some light-phase components with lower boiling points, and mist oil drops carried by water vapor in the air exhaust process enter the gas-liquid separation tank 13 to be separated to obtain a part of light-phase oil.
After the oil liquid in the device 11 has a certain liquid level, the oil outlet and the valve 9 are opened, and the aging oil liquid at the bottom is discharged from the oil outlet and the valve 9 under the action of the oil suction pump and enters the oil storage device for circular treatment.
As shown in fig. 2:
the self-rotating material distributor 5 is provided with a rocker type spray head structure, a spray pipe 59 is connected with a spray pipe connector 58 through a spray pipe steering joint 57 with a ratchet structure, when oil enters the spray pipe 59 from the spray pipe connector 58 and is sprayed out from a spray nozzle 52 of the spray pipe 59, the oil impacts a corresponding guide plate 51 to form falling oil mist, as the rocker arm 54 is rotatably sleeved on a rocker shaft 53 extending out of the spray pipe 59, the guide plate 51 at the end part of the rocker arm 54 is subjected to tangential stress to drive the whole rocker arm 54 to rotate anticlockwise for a certain angle around the rocker shaft 53, as the two ends are respectively fixed on the spray pipe 59 and the rocker arm 54 under the action of a return spring 55, the other end part of the rocker arm 54 corresponds to a spray pipe baffle 56 fixed on the spray pipe 59, the rocker arm 54 returns to impact the spray pipe baffle 56, as the spray pipe steering joint 57 with the ratchet structure on the spray pipe 59 rotates for a certain angle, the oil circularly reciprocates along with the spray pipe 59, the oil can be uniformly sprayed into the degassing element 6.
As shown in fig. 3 and 4:
the degassing element 6 is hollow cylindrical as a whole, is formed by stacking a plurality of layers of hollow disks 61 (for example, 10 layers, each layer has a thickness of 20mm), and a tiny gap exists between each layer of hollow disks 61, so that the circulation of gas phase in the evaporation process is facilitated. The interior of the single hollow disc 61 is provided with the conical through holes 62 which are connected with the upper surface and the lower surface in a staggered mode, the diameter of the large-diameter end of each conical through hole 62 is within the range of 1-2mm, the pore density is 60ppi, the pore size of each conical through hole 62 is different, when the plurality of layers of conical through holes 62 are overlapped together, a staggered conical different-pore structure is formed, a flowing film is gradually formed when oil enters, moisture in the oil is quickly evaporated into water vapor in a vacuum negative pressure environment, and the gas is discharged from a hole and is pumped out through the pumping hole 10 under the action of the vacuum pump 14.
The degassing element 6 is a place for film formation and evaporation of oil, and the surface area of the conical through hole is larger than that of the cylindrical hole under the same volume, so that the effective evaporation surface area of a liquid film can be increased, and the evaporation efficiency is improved.
The conical different-hole structure means that the size of each conical through hole 62 is different and has different maximum diameter and minimum diameter, each hollow disc 61 of the degassing element 6 is formed by pressing a plurality of porous sheets, and the conical through holes 62 with different sizes form a tortuous and changeable channel, so that rolling deformation can be generated in the flowing process of an oil film, the evaporation surface of a liquid film is refreshed, and the dehydration rate of the device is improved.
The surface area of the liquid influences the evaporation efficiency of the water, and the more water molecules are on the evaporation surface of the liquid, the more water molecules overflow from the liquid surface in the same time, and the faster the water is evaporated. The oil liquid irregularly flows in the conical through hole 62, the evaporation surface of the liquid film which is contacted with the heating surface is changed, the oil liquid is uniformly heated, the local overhigh temperature can not occur (aging oil is a heat-sensitive material, the local overhigh temperature of the oil liquid can be caused by too long residence time of the liquid film, the heating surface is easy to coke and deteriorate), and the flowing speed is slow, the liquid film in a too many turbulent flow states can not be generated, the thermal resistance is low, and the heat transfer coefficient is high.
A temperature sensor 15 arranged on the device 11 feeds back the internal temperature of the device 11 and compares the internal temperature with a set temperature, the power controller controls the heating sleeve 7 to be opened and closed, the actual output power is continuously changed, the purpose of controlling the internal temperature of the device 11 to be constant is achieved, the pressure limiting valve 12 is used for realizing the stability of vacuum negative pressure in the device 11, and the anti-aging oil liquid is prevented from bumping under the premise of ensuring the evaporation rate.
The device has the advantages of small occupied area, large treatment capacity, high evaporation efficiency, low failure rate and the like, and is suitable for online dehydration of the aging oil of the offshore platform.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. An aging oil vacuum film evaporation device is characterized in that: the device is provided with an oil outlet, the device is connected with a preheating tank with an electric heater through an oil inlet pipeline provided with an oil inlet, a valve and a gear oil suction pump, a hollow cylindrical degassing element formed by overlapping a plurality of layers of hollow disc structures is arranged in the device, the hollow disc is provided with a conical through hole for connecting the upper surface and the lower surface, the conical through hole has various maximum diameters and minimum diameters, and the degassing element is internally connected through the conical through hole to form a conical different-hole structure; the hollow cylinder of the degassing element is sleeved on the heating sleeve; the extraction opening on the device is connected with a gas-liquid separation tank through a pipeline, and the gas-liquid separation tank is connected with a vacuum pump;
the self-rotating material distributor connected with the oil inlet is positioned above the degassing element, a spray pipe of the self-rotating material distributor is connected with a spray pipe interface through a spray pipe steering joint of a ratchet structure, a spray nozzle of the spray pipe faces a guide plate at the end part of a rocker arm, the rocker arm is rotatably sleeved on a rocker arm shaft extending out of the spray pipe, two ends of a return spring are fixedly arranged on the spray pipe and the rocker arm respectively, and the other end of the rocker arm corresponds to a spray pipe baffle; the end part of the oil inlet pipeline positioned in the device is connected with the self-rotating material distributor.
2. The aging oil vacuum thin film evaporation device of claim 1, wherein: the heating sleeve is internally provided with a ceramic heating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810551779.4A CN110548306B (en) | 2018-05-31 | 2018-05-31 | Aging oil vacuum film evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810551779.4A CN110548306B (en) | 2018-05-31 | 2018-05-31 | Aging oil vacuum film evaporation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110548306A CN110548306A (en) | 2019-12-10 |
| CN110548306B true CN110548306B (en) | 2022-03-29 |
Family
ID=68734107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810551779.4A Active CN110548306B (en) | 2018-05-31 | 2018-05-31 | Aging oil vacuum film evaporation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110548306B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202191733U (en) * | 2011-07-08 | 2012-04-18 | 常州贺斯特电气有限公司 | Efficient degassing rings for treating insulating oil |
| CN102430252A (en) * | 2011-09-21 | 2012-05-02 | 重庆工商大学 | Double-effect heat transfer falling film vacuum oil-water separating device |
| WO2013057380A1 (en) * | 2011-10-20 | 2013-04-25 | Barba Willy Del | Separator for water/oil condensates from compressors |
-
2018
- 2018-05-31 CN CN201810551779.4A patent/CN110548306B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202191733U (en) * | 2011-07-08 | 2012-04-18 | 常州贺斯特电气有限公司 | Efficient degassing rings for treating insulating oil |
| CN102430252A (en) * | 2011-09-21 | 2012-05-02 | 重庆工商大学 | Double-effect heat transfer falling film vacuum oil-water separating device |
| WO2013057380A1 (en) * | 2011-10-20 | 2013-04-25 | Barba Willy Del | Separator for water/oil condensates from compressors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110548306A (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203875112U (en) | Equipment for treating volatile organic contaminated soil by microwave heating | |
| CN203048630U (en) | Microwave desalination device for concentrated saline water | |
| WO2020034611A1 (en) | Oil sludge pyrolysis device | |
| CN103964539A (en) | Microwave desalination device for strong brine | |
| EA013151B1 (en) | Process and device for dehydration and degassing of crude petroleum solutions or emulsions by water | |
| CN110548306B (en) | Aging oil vacuum film evaporation device | |
| CN104910944A (en) | Coal tar desalination process | |
| CN210151034U (en) | Oil-water separation device based on graphene film | |
| CN210140556U (en) | High-efficient dewatering device of ageing crude oil vacuum flash distillation | |
| JP2012518690A (en) | Oil reaction vacuum pump with hydraulic gasket and method for conducting catalytic oiling reaction from preconditioned slurry-like residue | |
| AU2021103727A4 (en) | Deoiling and purification device for emulsified wastewater | |
| CN110642314A (en) | Process unit for comprehensively utilizing crude oil electric desalting sewage by delayed coking device | |
| CN202078804U (en) | On-line heat transfer oil regenerating device | |
| CN103285734A (en) | A treatment process and a system for waste organic solvents based on nano filter membranes | |
| CN104784956B (en) | A kind of ultrahigh vacuum molecular distillation equipment | |
| CN101993705B (en) | Asphalt pretreatment tower | |
| CN210127097U (en) | Water injection, deoxidization and degassing water treatment machine for oil field | |
| CN204996170U (en) | Electric dual -purpose high temperature deoiling device | |
| CN205151821U (en) | Freezing sewage treatment plant of low temperature | |
| CN219681752U (en) | Deoiling demulsification device | |
| Lu et al. | Research of oily wastewater treatment by micro-bubble flotation experimental device | |
| CN206577602U (en) | A kind of oil-sludge treatment condenses spray system | |
| CN108017177B (en) | Brine membrane separation process for treating high-salinity high-organic-matter wastewater | |
| CN203425722U (en) | Waste organic solvent treatment system based on nano-filtration membrane | |
| CN110699114B (en) | Petroleum refining atmospheric and vacuum distillation device with improved water removal method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |