CN107957005B - Petroleum pipeline scale prevention demulsification heating equipment and oil-gas-water separation method - Google Patents
Petroleum pipeline scale prevention demulsification heating equipment and oil-gas-water separation method Download PDFInfo
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- CN107957005B CN107957005B CN201711388786.9A CN201711388786A CN107957005B CN 107957005 B CN107957005 B CN 107957005B CN 201711388786 A CN201711388786 A CN 201711388786A CN 107957005 B CN107957005 B CN 107957005B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/18—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/005—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion by thermal diffusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/048—Breaking emulsions by changing the state of aggregation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
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Abstract
The invention relates to a petroleum pipeline scale prevention demulsification heating device and an oil-gas-water separation method, wherein a multi-layer coalescence inclined plate bundle is arranged in a shell of the device, two ends of the coalescence inclined plate bundle are respectively provided with a heat source inlet header and a heat source outlet header, the heat source inlet header is provided with a heat source inlet, the heat source outlet header is provided with a heat source outlet, one end of the coalescence inclined plate bundle is fixed through a vibration transmission rod and is tightly connected with the inside of the shell, the other end of the vibration transmission rod is connected with an ultrasonic transducer, a gas collecting pipe is communicated with the shell through a plurality of gas collecting branch pipes, one end of the shell is provided with a crude oil inlet, and the other end of the shell is provided with a crude oil inlet. The invention can efficiently keep the continuous heating and oil-gas-water separation effects of the oilfield produced liquid for a long time, has strong heating effect and descaling capability of the petroleum pipeline scale prevention demulsification heating equipment, long service life and high oil-gas-water separation efficiency, and reduces engineering cost.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation, in particular to an anti-scale demulsification heating device for a petroleum pipeline and an oil-gas-water separation method.
Background
The oil field heating furnace is an important device in an oil-water separation system for extracting crude oil, the scaling problem often occurs in the operation process, a light person blocks a heat exchange pipeline to increase the pressure, the power consumption is increased, and the heating furnace is directly scrapped in severe cases. At present, when the oil field heating furnace is designed, a heat exchange pipe with a larger drift diameter is adopted to prolong the time of scale blockage, so that the volume of the heating furnace is increased, steel is wasted, transportation and installation costs are increased, and even under the premise of no scale, the heat exchange efficiency is very low due to the fact that the pipe diameter of the heat exchange pipe is larger and the distance between the middle fluid and the pipe wall is far, so that energy is seriously wasted. The waste of energy is even more serious if the scaling problem is added. In addition, the heating furnace applied on site at present only has the heating function, and has no demulsification and active scale prevention functions in the process of passing crude oil through the heating furnace.
Disclosure of Invention
The invention aims to provide an anti-scale demulsification heating device for a petroleum pipeline and an oil-gas-water separation method, which are used for solving the problems of serious scaling of a system pipeline, short service life of the pipeline, high cost, poor oil-water separation effect, poor demulsification effect and the like when crude oil is subjected to oil-water separation.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a petroleum pipeline scale control demulsification firing equipment, it includes shell, heat source entry header, vibration transmission pole, ultrasonic transducer, coalescence swash plate board bundle, heat source export header, gas collecting branch pipe, gas collecting tube, the inside multilayer coalescence swash plate board bundle that has set up of shell, the both ends of coalescence swash plate board bundle are equipped with heat source entry header and heat source export header respectively, the heat source entry has been seted up on the heat source entry header, the heat source export has been seted up on the heat source export header, this coalescence swash plate board bundle is fixed and with the interior zonulae occludens of shell through vibration transmission pole one end, the other end of vibration transmission pole is connected with ultrasonic transducer, the gas collecting tube communicates with the shell through a plurality of gas collecting branch pipe, shell one end has crude oil liquid inlet, and the other end has crude oil liquid outlet.
Further, the middle of the coalescing swash plate bundle is hollow, the plate-to-plate spacing of the coalescing swash plate bundle is 10mm, and the thickness of each plate is 1mm.
Further, the coalescing swash plate bundle and the shell are axially arranged at an angle of 40-50 degrees, and plates of the coalescing swash plate bundle are arranged in parallel.
Further, an exhaust check valve is arranged in the gas collecting branch pipe.
An oil-water-gas separation method by utilizing petroleum pipeline scale prevention demulsification heating equipment comprises the following steps,
firstly, a heating source enters a heat source inlet in the middle of each sloping plate through a heat source inlet header, and the heat source flows in the sloping plates and exchanges heat with crude oil between the sloping plates;
step two, crude oil incoming liquid enters the device from the left end of the crude oil incoming liquid inlet and then is separated through the coalesced inclined plate bundles, firstly larger oil drops float upwards and adhere to the lower surface of each inclined plate under the action of gravity difference, water drops sink down, at the moment, the power ultrasonic energy emitted by the inclined plates has good mechanical vibration, shearing and heating effects, on one hand, emulsion demulsification separation which is not separated or floats upwards is accelerated among the plate bundles in the pipeline, on the other hand, oil drops which are adhered to the lower surface of each inclined plate are accelerated to polymerize, an ascending channel of an oil way is formed and kept, the water drops sink down into the pipeline, meanwhile, gas is discharged upwards, the gas enters a gas collecting pipe through a gas collecting branch pipe, and the process of oil-gas-water separation is repeated continuously;
and thirdly, opening an exhaust check valve in the gas collecting branch pipe, timely discharging the separated gas, discharging the separated mixed liquid from a crude oil liquid outlet, and discharging a heat source from a heat source outlet on a heat source outlet header.
The invention has the beneficial effects that: the oil-water-gas separation effect is good, the anti-scaling demulsification heating is integrated, the cost is reduced, the working efficiency is improved, the service life of the petroleum pipeline is prolonged, and the anti-scaling demulsification heating equipment for the petroleum pipeline has the advantages of small occupied area, convenient installation and use, no maintenance, energy conservation, high efficiency and continuous and stable operation.
Drawings
FIG. 1 is a schematic diagram of an anti-scale demulsification heating device for petroleum pipelines.
FIG. 2 is a schematic diagram of a partial structure of a vibration transmission rod of the petroleum pipeline anti-scale demulsification heating device.
Detailed Description
As shown in fig. 1-2, the invention discloses a petroleum pipeline scale prevention demulsification heating device and an oil-gas-water separation method, which comprises a shell 1, a heat source inlet header 3, a vibration transmission rod 5, an ultrasonic transducer 6, a coalescing sloping plate bundle 8, a heat source outlet header 9, a gas collection branch pipe 11 and a gas collection pipe 12, wherein a plurality of layers of coalescing sloping plate bundles 8 are arranged in the shell 1, and the number of plates of the coalescing sloping plate bundles 8 is adjusted according to actual requirements. The two ends of the coalescence inclined plate bundle 8 are respectively provided with a heat source inlet header 3 and a heat source outlet header 9, the heat source inlet header 3 is provided with a heat source inlet 2, the heat source outlet header 9 is provided with a heat source outlet 7, the coalescence inclined plate bundle 8 is fixed at one end through a vibration transmission rod 5 and is tightly connected with the inside of the shell 1, the other end of the vibration transmission rod 5 is connected with an ultrasonic transducer 6, a gas collecting tube 12 is communicated with the shell 1 through a plurality of gas collecting branch pipes 11, one end of the shell 1 is provided with a crude oil incoming liquid inlet 4, and the other end is provided with a crude oil incoming liquid outlet 10.
The middle of the coalescing swash plate bundle 8 is empty, the plate-to-plate spacing of the coalescing swash plate bundle 8 is 10mm, and the thickness of each plate is 1mm. The coalescing swash plate bundle 8 and the housing 1 are axially arranged at 40-50 degrees, and plates of the coalescing swash plate bundle 8 are arranged in parallel.
In addition, an exhaust check valve is arranged in the gas collecting branch pipe 11 and is used for timely exhausting the separated gas so as to reduce the pressure and the gas volume in the integrated equipment, ensure that the oil water is filled in the inner space of the shell 1 and maintain the separation efficiency.
The basic principle of the invention is as follows: the oil-water mixed liquid is demulsified and scale-proof under the action of the inclined plate of the powered ultrasonic energy in the flowing process, the water phase with higher density is naturally layered under the action of gravity in the inclined plate environment, the water phase with higher density sinks to the lower part of the inclined plate and is collected in the pipeline, the oil phase with lower density floats to the upper part of the inclined pipe and is collected in the pipeline, finally, the layered flowing of the oil phase and the water phase is formed, the gas phase in the crude oil liquid continuously rises to the uppermost gas phase pipeline, and finally, the high-efficiency and rapid separation of oil, gas and water is realized.
When the integrated equipment works normally, the power ultrasonic system is started first, the ultrasonic transducer 6 couples power ultrasonic energy to the coalescing sloping plate bundle 8 through the vibration transmission rod 5, at the moment, the plate bundle and the pipeline are provided with ultrasonic energy, namely the pipeline wall surface and the plate bundle wall surface always keep high-frequency low-amplitude fluctuation, and the result of the ultrasonic fluctuation effectively transmits mechanical vibration, shearing and thermal action of the ultrasonic energy to oil-water mixed liquid to be treated, so that the results of efficient demulsification, efficient scale prevention, efficient heat exchange and efficient coalescence are received. The adopted ultrasonic technology can realize the functions of frequency conversion, frequency sweep, long pulse and the like, and the ultrasonic energy is controlled in the optimal state before cavitation so as to realize the optimal demulsification and scale prevention functions.
As shown in figure 1, after entering the integrated equipment of the invention from a crude oil incoming liquid inlet 4, the crude oil incoming liquid is subjected to coalescence and separation treatment through a coalescence inclined plate bundle 8, the inclination angle of the inclined plate bundle is set to be 40-50 degrees along the axial direction of a pipeline, the plate bundle material is made of stainless steel materials with good elasticity and good oil drop absorption, the plate bundles are arranged in parallel, and the plate spacing is set to be 10mm according to the characteristics of crude oil incoming liquid. Firstly, larger oil drops float upwards and adhere to the lower surface of each inclined plate under the action of gravity difference, and water drops sink, at the moment, the power ultrasonic energy emitted by the inclined plates has good mechanical vibration, shearing and thermal effects, on one hand, emulsion demulsification separation of emulsion which is not separated or floats upwards between inner plate bundles of the pipeline is accelerated, on the other hand, oil drops which are adhered to the lower surface of each inclined plate are accelerated to polymerize, and an ascending channel of an oil way is formed and maintained, so that the separation efficiency of oil and water gas is improved, and the treated crude oil liquid is discharged from a crude oil liquid outlet 10.
As shown in fig. 2, the heat source in the present invention may be a heat source such as hot steam, hot water, heat conducting oil, high temperature flue gas, etc. to heat the crude oil passing between the coalescing swash plate bundles 8, and the heat source may be a heat pump, MVR, heating furnace, solar heater, etc.
Example 1
Taking a hot steam heat source as an example, crude oil liquid enters the integrated equipment of the invention from the left end of the crude oil liquid inlet 4, and then is subjected to coalescence and separation treatment by a coalescence inclined plate bundle 8, wherein the inclination angle of the inclined plate bundle is set to 40 degrees along the axial direction of a pipeline, the plate bundle is made of stainless steel materials with good elasticity and good oil drop absorption, the plate bundles are arranged in parallel, and the plate spacing is set to 10mm according to the characteristics of crude oil liquid. Firstly, hot steam enters a heat source inlet 2 in the middle of each inclined plate through a heat source inlet header 3, the hot steam flows in the inclined plates and exchanges heat with crude oil liquid coming between the inclined plates, and finally, a steam-water mixture after heat exchange is discharged from a heat source outlet 7 and a heat source outlet header 9.
Example 2
Taking a heat conducting oil heat source as an example, crude oil liquid enters the integrated equipment of the invention from a crude oil liquid inlet 4, and then is subjected to coalescence and separation treatment by a coalescence inclined plate bundle 8, wherein the inclination angle of the inclined plate bundle is set to be 50 degrees along the axial direction of a pipeline, the plate bundle material is made of stainless steel materials with good elasticity and good oil drop absorption, the plate bundles are arranged in parallel, and the plate spacing is set to be 10mm according to the characteristics of crude oil liquid. The first heat conducting oil enters the heat source inlet 2 in the middle of each sloping plate through the heat source inlet header 3, the heat conducting oil flows in the sloping plates and exchanges heat with crude oil liquid coming between the sloping plates, and finally the heat conducting oil after heat exchange is discharged from the heat source outlet 7 and the heat source outlet header 9.
Example 3
Taking a hot water heat source as an example, crude oil liquid enters the integrated equipment of the invention from the left end of the crude oil liquid inlet 4, and then is subjected to coalescence and separation treatment by a coalescence inclined plate bundle 8, wherein the inclination angle of the inclined plate bundle is set at 45 degrees along the axial direction of a pipeline, the plate bundle materials are made of stainless steel materials with good elasticity and good oil drop absorption, the plate bundles are arranged in parallel, and the plate spacing is set at 10mm according to the characteristics of crude oil liquid. Firstly, hot water enters the heat source inlet 2 in the middle of each inclined plate through the heat source inlet header 3, the hot water flows in the inclined plates and exchanges heat with crude oil liquid coming from the inclined plates, and finally, the gas-water mixed liquid after heat exchange is discharged from the heat source outlet 7 and the heat source outlet header 9.
In the normal working process of the integrated equipment, no matter the shell 1 or the coalescent sloping plate bundles 8 are always provided with power ultrasonic energy, the energy can continuously keep the pipelines and the plate bundles to have good shearing force, the shearing force can effectively prevent and remove scaling, any adverse effect on the equipment caused by scaling is avoided, and the heat exchange efficiency is much higher than that of a common heating furnace due to the fact that the distance between the plate bundles is only 10mm and the fluctuation effect of the ultrasonic energy on the plate bundles is continuously damaged, and the integrated equipment can keep the continuous heating and oil-gas-water separation effects of oilfield produced liquid for a long time. The integrated equipment of the invention has huge market space.
As shown in figure 1, the invention can be used singly in actual operation, can be used in centralized multistage series or parallel connection, can be used in segmented multistage series or parallel connection, and the specific composition quantity is mainly determined by the characteristics of crude oil liquid in the field, and meanwhile, the equipment condition of other oil-water separation equipment in the field is considered. The device can be used for heating crude oil liquid, can also be used for efficiently separating oil, water and gas, can effectively prevent the influence of dirt in the operation process, and can keep long-term stable operation. Compared with the reused oil field heating furnace, on the basis of the same heat exchange efficiency, the integrated equipment of the invention has the volume smaller than 1/3 of the original heating furnace and the weight smaller than 1/5 of the original heating furnace. Therefore, the utility model can greatly reduce the cost and the workload of installation.
Principle of ultrasonic demulsification
(1) Why ultrasound technology is needed to break emulsions
The natural emulsifying agent in the crude oil and the surfactant added during exploitation are adsorbed on an oil-water interface to form a viscoelastic film with certain strength, so that the oil-water interface energy is increased, the crude oil extracted from the oil field is mostly in the form of emulsion, the dispersion structure of the emulsion is very complex, and as many oil fields in China enter secondary and tertiary oil recovery, the quality of the crude oil is poor, the chemical components and the oil-water emulsion structure become more complex, and the kinetic barrier is caused for the coalescence of dispersed water drops. In particular, for heavy crude oil, the viscosity is high, the density is high, and demulsification and dehydration are more difficult than those of dilute oil. Conventional gravity separation methods are only capable of separating large droplets of water and mixtures of droplets of oil, and are ineffective for complex emulsions such as oil-in-water (O/W), water-in-oil (W/O), oil-in-water-in-oil (O/W/O), oil-in-water (W/O/W), and the like. It has been found that it is difficult to demulsify desalted and dewater crude oil by conventional methods, and that power ultrasound assisted methods can be used for desalting and dewatering such oils with good results.
(2) Ultrasonic demulsification mechanism and advantage
The ultrasonic demulsification mainly uses the mechanical vibration, shearing and thermal effects of ultrasonic waves to strengthen the collision and coalescence of water drops in the oil, thereby accelerating the separation of oil and water phases.
The mechanical vibration action of the ultrasonic waves causes the oil droplets or water droplets to coalesce, for example, when the ultrasonic waves pass through a crude oil medium having suspended water "particles" which are caused to vibrate with the crude oil medium. Because the water 'particles' with different sizes have different relative vibration speeds, the water 'particles' collide and adhere with each other, so that the volume and the weight of the particles are increased, and finally sedimentation and separation are carried out.
The shearing action of the ultrasonic wave can reduce the strength of the oil-water interface film or damage the interface film by diameter, and accelerate the liquid film drainage process, thereby promoting the coalescence and separation of water drops or oil drops.
The thermal action of ultrasonic wave reduces the strength of the oil-water interfacial film and the viscosity of crude oil, on one hand, the boundary friction increases the temperature at the oil-water interfacial position, which is favorable for the rupture of the interfacial film, and on the other hand, the acoustic energy of the absorption part of the crude oil is converted into heat energy, which can reduce the viscosity of the crude oil, and is favorable for the gravity sedimentation separation of water particles from oil to water. It was found that ultrasonic irradiation promoted coalescence of water droplets in the dirty oil emulsion. Compared with the traditional continuous ultrasonic radiation, the pulsed ultrasonic radiation can obtain better water drop coalescence effect.
Ultrasonic demulsification has the advantage that currently, the commonly applied demulsification method is mainly a chemical demulsifier method. The method is easy to cause environmental pollution, has strong specificity, can only act on a single emulsion, and has a narrow application range. Ultrasonic waves can be conducted in various mediums, and the ultrasonic wave generator is free from limitation in use. The ultrasonic demulsification is an emerging physical demulsification method, and has the advantages of good effect, no pollution and low cost. Experiments prove that the ultrasonic demulsification method can be used alone or together with other methods, for example, has good synergistic effect with the demulsifier method, and can greatly improve the demulsification efficiency when used together.
(3) Inclined plate oil-water separation principle and existing problems
The oil-water separation effect generally depends on the characteristics of the coalescing element material and the structural characteristics of the internal components of the separation equipment, and the shallow pool principle of the inclined plate becomes an indispensable method in the oil-water separation technology.
According to the shallow pool principle, the inclined plate beam is arranged in the pipeline, so that the effective separation area of the oil separation pool is increased, the vertical rising distance of oil droplets is shortened, and the rectifying effect is improved. The action mechanism is that the flowing speed of fluid in the inclined plate is reduced, the residence time of the fluid in the pipeline is prolonged, so that the probability of collision and coalescence of discrete phase oil drops in the inclined plate is increased, the oil-water two phases are driven to move oppositely under the action of density difference, favorable conditions are provided for the floating and separation of the discrete phase oil drops in the mixed phase, the collision probability of small oil drops is increased, the oil-water separation efficiency is improved, and the physical oil-water separation technology of oil-water separation is achieved.
Experiments show that as stainless steel has good lipophilicity, oil drop particles with different particle diameters quickly adhere to the lower surface of the inclined plate after reaching the inclined plate made of the stainless steel without the action of ultrasonic waves, and further cover the whole inclined plate type coalescing plate; because adjacent oil drops are not quickly fused by surface tension, a continuous oil film is formed, and the adjacent oil drops are closely arranged together in the form of particles. With continuous mixing of dispersed phase oil drops, part of oil drop particles distributed on the surface of the coalescing plate are continuously increased, when the oil drops are sufficiently gathered, the oil drops are continuously combined with the oil drops adjacent to the upper side, then a flow channel is randomly formed, the oil phase is conveyed to the top end of the sloping plate, and the plate surface after the flow channel disappears returns to the initial state. The dispersed phase oil drops are adhered again in the area, and the dispersed phase oil drops are circulated continuously, so that coalescence and separation of the dispersed phase are realized.
Because the problem of scale formation of the gathering and transporting system of the oil field is very common, the scale formation and even the blockage are easy to occur among the inclined plate bundles under the conventional condition, and the separation effect is seriously influenced. Through the analysis of the separation process, the separation efficiency of the conventional inclined plate coalescence-separation technology is not high, and more importantly, the emulsion cannot be separated by the self gravity of oil drops and water drops, or the separation effect is very poor.
The foregoing description is merely illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Equivalent changes and modifications are intended to be within the scope of the present invention as defined in the appended claims.
Claims (5)
1. A petroleum pipeline scale control demulsification firing equipment, its characterized in that: the device comprises a shell (1), a heat source inlet header (3), a vibration transmission rod (5), an ultrasonic transducer (6), a coalescence inclined plate bundle (8), a heat source outlet header (9), a gas collecting branch pipe (11) and a gas collecting pipe (12), wherein the inside of the shell (1) is provided with a plurality of coalescence inclined plate bundles (8), two ends of the coalescence inclined plate bundles (8) are respectively provided with the heat source inlet header (3) and the heat source outlet header (9), the heat source inlet header (3) is provided with a heat source inlet (2), the heat source outlet header (9) is provided with a heat source outlet (7), one end of the coalescence inclined plate bundles (8) is fixed through the vibration transmission rod (5) and is tightly connected with the inside of the shell (1), the other end of the vibration transmission rod (5) is connected with the ultrasonic transducer (6), the gas collecting pipe (12) is communicated with the shell (1) through a plurality of gas collecting branch pipes (11), one end of the shell (1) is provided with a crude oil liquid inlet (4), and the other end of the shell (1) is provided with a crude oil liquid outlet (10).
2. The petroleum pipeline scale control demulsification heating apparatus as claimed in claim 1, wherein: the middle of the coalescing sloping plate bundle (8) is hollow, the plate spacing of the coalescing sloping plate bundle (8) is 10mm, and the thickness of each plate is 1mm.
3. The petroleum pipeline scale control demulsification heating apparatus as claimed in claim 1 or 2, wherein: the coalescing sloping plate bundle (8) and the shell (1) are axially arranged at an angle of 40-50 degrees, and plates of the coalescing sloping plate bundle (8) are arranged in parallel.
4. The petroleum pipeline scale control demulsification heating apparatus as claimed in claim 1, wherein: an exhaust check valve is arranged in the gas collecting branch pipe (11).
5. An oil-water-gas separation method by using the petroleum pipeline scale prevention demulsification heating equipment as claimed in claim 1 or 2 or 3 or 4, which is characterized in that: comprises the following steps of the method,
firstly, a heating source enters a heat source inlet in the middle of each sloping plate through a heat source inlet header, and the heat source flows in the sloping plates and exchanges heat with crude oil between the sloping plates;
step two, crude oil incoming liquid enters the device from the left end of the crude oil incoming liquid inlet and then is separated through the coalesced inclined plate bundles, firstly larger oil drops float upwards and adhere to the lower surface of each inclined plate under the action of gravity difference, water drops sink down, at the moment, the power ultrasonic energy emitted by the inclined plates has good mechanical vibration, shearing and heating effects, on one hand, emulsion demulsification separation which is not separated or floats upwards is accelerated among the plate bundles in the pipeline, on the other hand, oil drops which are adhered to the lower surface of each inclined plate are accelerated to polymerize, an ascending channel of an oil way is formed and kept, the water drops sink down into the pipeline, meanwhile, gas is discharged upwards, the gas enters a gas collecting pipe through a gas collecting branch pipe, and the process of oil-gas-water separation is repeated continuously;
and thirdly, opening an exhaust check valve in the gas collecting branch pipe, timely discharging the separated gas, discharging the separated mixed liquid from a crude oil liquid outlet, and discharging a heat source from a heat source outlet on a heat source outlet header.
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| CN201711388786.9A CN107957005B (en) | 2017-12-21 | 2017-12-21 | Petroleum pipeline scale prevention demulsification heating equipment and oil-gas-water separation method |
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| WO2021044317A1 (en) * | 2019-09-05 | 2021-03-11 | Khalifa University of Science and Technology | Inline demulsification device |
| CN110925514B (en) * | 2019-12-20 | 2022-05-10 | 上海核工程研究设计院有限公司 | Device for avoiding piping system acoustic resonance |
| CN111871004A (en) * | 2020-07-31 | 2020-11-03 | 深圳职业技术学院 | Oil-water emulsion separation equipment |
| CN112479431B (en) * | 2020-12-03 | 2023-04-25 | 中国石油天然气股份有限公司 | Device and method for filling solid scale inhibitor into crude oil gathering and conveying station |
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