CN215250163U

CN215250163U - Refinery enterprise sump oil dehydration device

Info

Publication number: CN215250163U
Application number: CN202121336854.9U
Authority: CN
Inventors: 关宏讯
Original assignee: BEIJING TIANHAO KERUN ENVIRONMENT TECHNOLOGY CO LTD
Current assignee: BEIJING TIANHAO KERUN ENVIRONMENT TECHNOLOGY CO LTD
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-21
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a refinery enterprise sump oil dehydration device relates to chemical industry technical field, include: a buffer tank, a conditioning tank, an ultrasonic reaction device, a settling tank and a centrifugal separation tank are sequentially connected from front to back; the ultrasonic reaction device comprises a shell, a water distribution weir is arranged in the shell, a settling area is formed between the water distribution weir and one end of the shell, a sump oil emulsion breaking area is arranged in the middle of the shell, a weir opening communicated with the sump oil emulsion breaking area is arranged above the water distribution weir, an emulsion breaking spraying area is arranged below the sump oil emulsion breaking area, a demulsifier atomizing area is arranged at the other end in the shell, and the demulsifier atomizing area is connected with the demulsified liquid spraying area through a demulsifier conveying pipeline; adopt this processing apparatus, not only can realize water oil separating, reduce the emission of filth, improve the utilization efficiency and the economic benefits of sump oil, to the influence of sewage treatment field operation when can avoiding sump oil to handle moreover, have very big market potential.

Description

Refinery enterprise sump oil dehydration device

Technical Field

The utility model belongs to the technical field of the chemical industry, more specifically relates to a refinery enterprise sump oil dehydration device.

Background

Oil refining and chemical enterprises can generate a certain amount of dirty oil in the process of mining and refining, the dirty oil contains more colloids, asphaltenes and electrolytes, and the emulsification and aging degrees are serious. On one hand, the electrolyte contained in the dirty oil emulsion destroys an electric field, so that the dirty oil cannot be dehydrated by adopting an electric desalting tank like crude oil; on the other hand, the emulsion has excellent stability due to the emulsibility, and the thermal sedimentation dehydration effect is common. The dirty oil can form stable emulsion, mainly because the dirty oil contains more natural 'emulsifiers', the natural 'emulsifiers' are dispersed on an oil-water interface to form a viscoelastic film with certain strength, dynamic barrier is caused to emulsion droplet aggregation, and the dirty oil emulsion has stability. In addition, solid particles and the like are enriched on the interface of the oil-water emulsion to form a firm interface film, heavy components of the oil-water emulsion are degenerated and aggregated into clusters under the action of microorganisms, and the oil-water emulsion is easy to form a stable water-in-oil-in-water type 'multi-phase oil-water emulsion' by adding an artificial emulsifier.

Therefore, the key of dehydration is to destroy the action of the emulsifier, so that the oil and water can not form emulsion, and fine water drops can be mutually aggregated into large particles and settled, and finally the purpose of oil-water separation is achieved. At present, the commonly used demulsification method is mainly a chemical demulsification method, and the most common method in the method is demulsification by a demulsification method. However, this method is likely to cause environmental pollution and is too specific.

With the increasing emphasis on environmental protection in China, the realization of reduction, harmlessness and recycling of the recovered dirty oil becomes one of the problems to be solved urgently. If the dirty oil is not reasonably treated before being discharged, on one hand, the dirty oil can cause harm to the ecological environment, and on the other hand, a large amount of crude oil in the dirty oil can not be effectively utilized and is directly burnt, so that resource waste is caused.

Therefore, by adopting a brand-new dirty oil dehydration technology of the refining and chemical enterprises, the dirty oil amount of the refining and chemical enterprises is greatly reduced, energy can be saved, the pressure of a sewage treatment and gathering system is reduced, the problems of deterioration of sewage quality and the like are solved, and better economic benefits and remarkable social benefits and environmental benefits can be created for the enterprises.

The existing dirty oil dehydration treatment technologies comprise the following steps:

an electric field treatment method

The electric field treating method is to re-send the recovered dirty oil to the oil transportation system, mix it with a great amount of fresh crude oil and pump it into the electric dehydrator, under the action of electric field the small water drops are gathered into larger water drops, and then separated from the oil by the action of gravity, and the method is simple in process, and needs no separate treating system, and the water content after treatment can be reduced to below 0.5%.

Second, gravity settling method

Heating the dirty oil to a certain temperature, reducing the viscosity of the oil phase, increasing the density difference of the oil and the water, adding a specific surfactant to destroy an oil-water interface film, and removing water and impurities in the dirty oil through long-time gravity settling. The heating temperature of the dirty oil is generally above 60 ℃, the higher the temperature is, the faster the sedimentation speed is, and the sedimentation time is more than dozens of hours, so that the dirty oil can be processed into qualified crude oil with the water content of less than 5%. The method is independent treatment, does not influence daily production, and has simple process and large treatment capacity.

Three, centrifugal separation method

The demulsifier and the flocculant are added into the dirty oil by the automatic dosing device and then sent into the centrifuge, solid particles with high density in the dirty oil are settled on the wall of the rotating drum under the action of centrifugal force, the oil phase and the water phase form a cylinder, and the separated solid impurities are discharged by the screw conveyor. The centrifugal method has the advantages of simplicity, convenience, high efficiency and small occupied area.

Fourth, ultrasonic wave treatment method

The ultrasonic demulsification is based on the displacement effect generated by the action of ultrasonic waves on fluid media with different properties to realize oil-water separation, the viscosity of dirty oil and the rigidity of an oil-water interface membrane are reduced through the mechanical vibration, cavitation and thermal action of the ultrasonic demulsification, the mobility of liquid drops is increased, and the coalesced ultrasonic dirty oil treatment equipment is simple in structure and low in cost.

The mechanical action of the ultrasound wave promotes the agglomeration of the water particles. When the ultrasonic waves are applied to the crude oil, the suspended water particles 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 to each other, so that the volume and the weight of the water particles are increased, and finally the water particles are settled and separated.

The mechanical vibration of the ultrasonic wave can make the paraffin, colloid, asphaltene and other natural emulsifiers in the crude oil uniformly dispersed, increase the solubility of the natural emulsifiers, reduce the mechanical strength of an oil-water interface membrane and facilitate the sedimentation and separation of a water phase.

In addition, when the ultrasonic wave and the chemical demulsifier are combined for use, the action efficiency of the demulsifier can be improved due to the diffusion effect, and under the same treatment condition, the ultrasonic treatment efficiency is obviously higher than that of thermal sedimentation, so that the method can be used for the condition of low efficiency of the conventional method, and has application in the treatment of refinery sump oil at present and good development prospect.

Chemical method

The chemical demulsification method is mainly characterized in that a demulsifier is added into the dirty oil emulsion, and the demulsifier has the function of reducing the interfacial tension between oil and water, so that an interfacial film becomes unstable, the rupture of the interfacial film, the aggregation of water drops and the separation of oil and water phases are caused. As the emulsion has two forms, corresponding hole breaking agents, W/O type demulsifiers and O/W type demulsifiers are developed.

Sixth, biological method

The biological treatment technology comprises biological degradation and biological demulsification, wherein the biological degradation is realized by regulating the pH value, temperature and humidity of the environment and adding nutritive salt to promote the physiological activity of oleophilic bacteria so as to degrade pollutants, secondary pollution is not generated in the degradation processes such as a land ploughing method, a composting method and the like, and the treatment cost is low. The biodegradation is mainly used for harmless treatment of oily sludge and floor-type dirty oil, and is also suitable for harmless treatment of solid waste finally obtained by treating aging oil by other methods, so that direct discharge is avoided.

The treatment capacity of the dirty oil of the electric field treatment method is limited, and once the treatment capacity is too high, an electric field for electric dehydration of the dirty oil is unstable and even spans the electric field, so that the quality of the electric dehydration is poor.

The gravity settling method has long settling time, large energy consumption and high requirement on a matched demulsifier, and needs further improvement.

The centrifugal separation method has large one-time investment, high water content of the recovered oil and requirements on optimized medicament and parameters to achieve the optimal centrifugal treatment effect.

The quantity of demulsifier has a critical concentration of gathering in the chemical process, before reaching critical concentration of gathering, the demulsification dehydration effect improves along with the increase of the quantity of demulsifier, surpasss critical concentration of gathering after, the demulsification effect can appear two kinds of different circumstances along with demulsifier use concentration increase: the demulsifying effect is reduced or not changed.

The biological method has long treatment period, and moreover, the heavy components such as asphaltene, wax and the like are difficult to degrade or even can not be degraded, thereby causing secondary pollution to the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dirty oil dehydration processing apparatus of refining and chemical enterprises to the not enough that exists among the prior art, adopt this processing apparatus, not only can realize water oil separating, reduce the emission of filth, improve the utilization efficiency and the economic benefits of dirty oil, to the influence of sewage treatment field operation when can avoiding dirty oil to handle moreover, have very big market potential.

In order to realize the above-mentioned purpose, the utility model provides a refinery enterprise sump oil dehydration device, include:

a buffer tank, a conditioning tank, an ultrasonic reaction device, a settling tank and a centrifugal separation tank are sequentially connected from front to back;

ultrasonic reaction unit includes the shell, the inside of shell is provided with the distribution weir, the distribution weir with form the settlement zone between the one end of shell, middle part in the shell is provided with the broken breast area of sump oil, the top of distribution weir be provided with the weir mouth of sump oil breakdown of emulsion district intercommunication, the below in the broken breast area of sump oil is provided with broken emulsion and sprays the district, the other end in the casing is provided with demulsifier atomization zone, demulsifier atomization zone pass through demulsifier pipeline with broken emulsion sprays the district and connects.

Optionally, the buffer tank is provided with a first oil inlet and a first oil outlet, the first oil inlet is used for being connected with a sewage discharge port of a refining enterprise, the first oil outlet is connected with the conditioning tank through a first oil pipe, and a lift pump is arranged on the first oil pipe.

Optionally, a heating coil and a thermometer are arranged on the tempering tank.

Optionally, the demulsifier pipeline is L-shaped, the upper end of the vertical portion of the demulsifier pipeline with the demulsifier atomization zone intercommunication, the horizontal portion of the demulsifier pipeline set up in the below in the broken breast of sump oil, the horizontal portion of the demulsifier pipeline is provided with a plurality of atomizer, the output of atomizer sets up.

Optionally, one end of the settling tank is provided with a second oil inlet, the top of the settling tank is provided with a second oil outlet, the bottom of the settling tank is provided with a solid particle outlet, and the other end of the settling tank is provided with a first water outlet.

Optionally, a plurality of layers of inclined plate packing are arranged between the second oil outlet and the solid particle outlet along the vertical direction, and an oil separation film is arranged between the inclined plate packing and the first water outlet.

Optionally, the number of the inclined plate filler is not less than 4, the cross section of the inclined plate filler is in a zigzag shape, and the length of the inclined plate filler is 30% -50% of the length of the settling tank.

Optionally, a second oil pipe is arranged between the settling tank and the centrifugal separation tank, and a screw pump is arranged on the second oil pipe.

Optionally, the centrifugal separation jar is the cone, the lateral wall inboard of centrifugal separation jar covers there is the hydrophilicity sieve, the one end of centrifugal separation jar is provided with the third oil inlet, the top of the other end of centrifugal separation jar is provided with the third oil-out, the bottom of centrifugal separation jar is provided with the second delivery port, the second delivery port is used for collecting the mouth with sewage and is connected.

Optionally, the sewage collecting port is provided with a sewage pipe, and the conditioning tank, the settling tank and the centrifugal separation tank are connected with the sewage collecting port through the sewage pipe.

The utility model provides a refinery enterprise sump oil dehydration device, its beneficial effect lies in:

1. the processing device controls the tempering tank through the heating coil and the thermometer, can reduce the heating temperature and the temperature of the outward transportation of the dirty oil, and can reduce the consumption of heating equipment and fuel;

2. before ultrasonic demulsification, dirty oil uniformly flows through a water distribution weir and then enters a dirty oil demulsification area, and meanwhile, partial solid particles and impurities in the dirty oil are removed;

3. the treatment device is additionally provided with an emulsion breaking atomization area and a spraying area in the ultrasonic reaction device, and the atomized demulsifier is fully contacted with dirty oil from top to bottom through an atomization nozzle, so that the action of the demulsifier is greatly improved, the using amount of the demulsifier is obviously reduced, and the treatment cost is reduced;

4. the treatment device adds a fold line-shaped sloping plate filler and an oil separation film in a settling tank to accelerate the oil-water separation of dirty oil;

5. the treatment device is provided with a hydrophilic sieve plate in a centrifugal separation tank, so that the rapid separation of oil and water is realized; the water content of the treated dirty oil is obviously reduced, the oil content of the separated sewage is low, the suspended matters are low, and the influence on a sewage treatment field is reduced;

6. after entering the treatment device, the dirty oil sequentially passes through the buffer tank, the conditioning tank, the ultrasonic reaction device, the settling tank and the centrifugal separation tank, the water content of the dirty oil is obviously reduced, the process flow is clear and simple, the process facilities have no special technical requirements, the investment of the treatment device is small, and the operating cost is low.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.

Fig. 1 shows a schematic structural diagram of a refinery sump oil dehydration processing device according to an embodiment of the present invention.

Fig. 2 shows a schematic structural diagram of an ultrasonic reaction apparatus according to an embodiment of the present invention.

Fig. 3 shows a schematic structural view of a settling tank according to an embodiment of the present invention.

Fig. 4 shows a schematic structural view of a centrifugal separation tank according to an embodiment of the present invention.

Description of reference numerals:

1. a buffer tank; 2. a tempering tank; 3. an ultrasonic reaction device; 4. a settling tank; 5. a centrifugal separation tank; 6. a housing; 7. a water distribution weir; 8. a settling zone; 9. a dirty oil demulsification area; 10. a demulsifier atomization zone; 11. a demulsifier delivery conduit; 12. a first oil pipe; 13. a lift pump; 14. a heating coil; 15. an atomizing spray head; 16. a second oil inlet; 17. a second oil outlet; 18. a solid particle outlet is arranged; 19. a first water outlet; 20. filling materials of the inclined plate; 21. an oil separating film; 22. a screw pump; 23. a third oil inlet; 24. a third oil outlet; 25. a second water outlet; 26. a sewage collection port; 27. a sewage pipe; 28. a hydrophilic sieve plate.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The utility model provides a refinery enterprise sump oil dehydration device, include:

the ultrasonic reaction device comprises a shell, a water distribution weir is arranged inside the shell, a settling zone is formed between the water distribution weir and one end of the shell, a sump oil demulsification zone is arranged in the middle of the shell, a weir opening communicated with the sump oil demulsification zone is arranged above the water distribution weir, a demulsification spray zone is arranged below the sump oil demulsification zone, a demulsifier atomization zone is arranged at the other end of the shell, and the demulsifier atomization zone is connected with the demulsification liquid spray zone through a demulsifier conveying pipeline.

Specifically, the treatment device sequentially passes the dirty oil through the buffer tank, the conditioning tank, the ultrasonic reaction device, the settling tank and the centrifugal separation tank to separate oil from water in the dirty oil, so that the water content of the treated dirty oil is obviously reduced, the oil content and the suspended matters of the separated sewage are low, and the influence of the separated sewage on a sewage treatment field is avoided; in ultrasonic reaction unit, the sump oil gets into the settling zone earlier, foreign particles subsides through the settling basin of lower part and gets rid of, reduce the maintenance cost of equipment, the sump oil gets into the broken breast of sump oil district from the top of water distribution weir, in addition the broken emulsion of demulsifier flow direction in the demulsifier atomization district sprays the district, in the below in the broken breast of sump oil district, the demulsifier contacts with top-down sump oil with the form of atomized particles, greatly increased with the area of contact on demulsifier surface, improve the breakdown of emulsion efficiency to the sump oil, the use amount of demulsifier has been reduced simultaneously, use cost is reduced, the sump oil after final breakdown of emulsion is by the lower part outflow ultrasonic reaction unit in the broken breast of sump oil district, get into sump oil dehydration on next step.

Optionally, the buffer tank is provided with a first oil inlet and a first oil outlet, the first oil inlet is used for being connected with a sewage discharge port of an refining enterprise, the first oil outlet is connected with the conditioning tank through a first oil pipe, and a lift pump is arranged on the first oil pipe.

Specifically, the flow of the dirty oil is adjusted through the buffer tank, so that the large flow fluctuation of the dirty oil in a short time is prevented, and the flow of the dirty oil entering the next process is kept unchanged or fluctuates within a certain reasonable range as much as possible; be provided with the elevator pump on first oil pipe, avoid because there is the difference in height in buffer tank and quenching and tempering jar to lead to sump oil to carry unstablely.

In one embodiment, two oil pipe branches are arranged on the first oil pipe, and a lifting pump is arranged on each oil pipe branch, so that the efficiency of conveying dirty oil is improved, and the treatment efficiency of the treatment device on the dirty oil is improved.

Specifically, dirty oil with stable flow enters a tempering tank, steam is adopted to heat the dirty oil through a heating coil, a thermometer monitors the heating temperature in real time and is not more than 50 ℃, after standing for a certain time, less water is separated out, and the dirty oil is heated to be beneficial to subsequent ultrasonic demulsification.

Optionally, the demulsifier pipeline is L-shaped, the upper end of the vertical portion of the demulsifier pipeline is communicated with the demulsifier atomization zone, the horizontal portion of the demulsifier pipeline is arranged below the dirty oil demulsification zone, the horizontal portion of the demulsifier pipeline is provided with a plurality of atomization nozzles, and the output ends of the atomization nozzles are arranged upwards.

Specifically, in an ultrasonic generator, a demulsifier atomization area is connected with a sump oil demulsification area through a demulsifier conveying pipeline, the upper end of a vertical part is connected with the demulsifier atomization area, a plurality of atomization nozzles are arranged on a horizontal part, a demulsifier is sprayed out from the atomization nozzles and fully contacts with sump oil flowing down from a water distribution weir, and meanwhile, sump oil demulsification is realized under the action of ultrasonic waves; be provided with the demulsifier atomization zone on ultrasonic wave horizontal part right side, make the demulsifier under ultrasonic effect, form demulsifier atomized particles, greatly increased with the area of contact on sump oil surface, improve the breakdown of emulsion efficiency to the sump oil, reduce the use amount of demulsifier simultaneously, reduce cost.

In one embodiment, the atomizing nozzles are uniformly distributed on the demulsifier conveying pipeline, and the number of demulsifier atomized particles is increased at the lower part of the sump oil demulsification area, so that the contact area of the demulsifier and the sump oil is increased.

Specifically, dirty oil after the breakdown of emulsion that flows out from dirty oil broken emulsion district lower part flows into the setting tank from the second oil inlet, and dirty oil carries out further oil-water separation after the breakdown of emulsion in the setting tank, and dirty oil, solid particle, the sewage of separating are discharged from each export respectively, make dirty oil separator discharge more reasonable, avoid causing environment dirty oil and wasting of resources.

After the demulsified sump oil enters the second oil inlet, under the action of interception of inclined plate fillers and inertial collision, collision among oil droplets is increased, so that small oil droplets are aggregated into large liquid droplets, and finally, the large liquid droplets float out of the second oil outlet and flow to a centrifugal separation tank; meanwhile, after collision, the impurity particles sink by self gravity and are discharged out of the settling tank through the solid particle outlet, so that excessive impurities in the dirty oil are avoided, and oil drops are prevented from floating upwards; an oil separation film is arranged around the first water outlet, and sewage filtered from the oil separation film by dirty oil in the settling tank is discharged from the first water outlet.

In one embodiment, two ends of the oil separating film are connected with the top and the bottom of the settling tank, so that the contact area of the oil separating film and dirty oil is increased.

Optionally, the number of the inclined plate filler is not less than 4, the section of the inclined plate filler is in a zigzag shape, and the length of the inclined plate filler is 30% -50% of the length of the settling tank.

Specifically, the number of layers of the sloping plate filler is not less than 4, and the sloping plate filler is in a zigzag shape, so that the flow direction and the flow velocity of a medium can be changed, water molecules generated after the dirty oil is demulsified by ultrasonic waves are easier to separate the dirty oil, the settling speed of the water molecules is accelerated, the oil-water separation is accelerated, and meanwhile, the settling of solid particles is accelerated in the process of collision of the dirty oil and the sloping plate filler; the length of the sloping plate filler is 30-50% of the length of the settling tank, so that the contact area of the dirty oil and the sloping plate filler is increased, and the dirty oil separation efficiency is improved.

Specifically, a screw pump is arranged on the second oil pipe, the flow of the sump oil treated by the settling tank is regulated by the screw pump, the sump oil is pumped into the centrifugal separation tank, the initial speed of the sump oil entering the centrifugal separation tank is increased, and the centrifugal separation effect is improved.

Optionally, the centrifugal separation jar is the cone, and the lateral wall inboard of centrifugal separation jar covers there is the hydrophilicity sieve, and the one end of centrifugal separation jar is provided with the third oil-out, and the top of the other end of centrifugal separation jar is provided with the third oil-out, and the bottom of centrifugal separation jar is provided with the second delivery port, and the second delivery port is used for collecting the mouth with sewage and is connected.

Specifically, the centrifugal separation tank is conical, and dirty oil can be further separated from oil and water and can remove sewage and impurity particles after passing through the centrifugal separation tank; dirty oil enters the centrifugal separation tank through the third oil inlet, under the centrifugal action generated by high-speed rotation, the dirty oil is separated from sewage, the dirty oil floats upwards and flows out of the third oil outlet at the upper part of the centrifugal separation tank, the sewage is accelerated to coalesce in the contact process with the hydrophilic sieve plate at the outermost side in the circumferential direction of the centrifugal separation tank, and finally the sewage is discharged from the second water outlet at the bottom of the centrifugal separation tank, so that the oil-water rapid separation is realized; the inside of the side wall of the centrifugal separation tank is provided with the hydrophilic sieve plate, the hydrophilic sieve plate only allows hydrophilic substances to permeate, oil and water are more favorably separated, one side of the sieve plate, which is close to the axle center of the centrifugal separation tank, is of a convex curved surface structure, the contact area is increased, and the oil-water separation efficiency is improved.

In the process of separating the dirty oil, sewage is separated from the tempering tank, the settling tank and the centrifugal separation tank, collected through the sewage pipe and then discharged to the sewage collecting port, and the sewage is treated uniformly, so that the pollution to the environment is reduced.

Examples

As shown in fig. 1 to 4, the utility model provides a refinery sump oil dehydration device, include:

a buffer tank 1, a conditioning tank 2, an ultrasonic reaction device 3, a settling tank 4 and a centrifugal separation tank 5 are sequentially connected from front to back;

ultrasonic reaction unit 3 includes shell 6, the inside of shell 6 is provided with water distribution weir 7, form subsidence area 8 between the one end of water distribution weir 7 and shell 3, middle part in the shell 6 is provided with the broken breast area 9 of sump oil, the top of water distribution weir 7 is provided with the weir mouth with the broken breast area 9 intercommunication of sump oil, the below of the broken breast area 9 of sump oil is provided with broken emulsion and sprays the district, the other end in the casing is provided with demulsifier atomization zone 10, demulsifier atomization zone 10 spouts through demulsifier pipeline 11 and the breakdown of emulsion and sprays the district and be connected.

In this embodiment, the buffer tank 1 is provided with a first oil inlet and a first oil outlet, the first oil inlet is used for being connected with a sewage discharge port of a refining enterprise, the first oil outlet is connected with the conditioning tank 2 through a first oil pipe 12, and a lift pump 13 is arranged on the first oil pipe 12.

In the present embodiment, the tempering tank 2 is provided with a heating coil 14 and a thermometer.

In this embodiment, demulsifier pipeline 11 is L shape, and the upper end and the demulsifier atomization zone 10 intercommunication of the vertical portion of demulsifier pipeline 11, the horizontal part of demulsifier pipeline 11 set up in the broken below of breast 9 of sump oil, and the horizontal part of demulsifier pipeline 11 is provided with a plurality of atomizer 15, and atomizer 15's output sets up.

In this embodiment, one end of the settling tank 4 is provided with a second oil inlet 16, the top of the settling tank 4 is provided with a second oil outlet 17, the bottom of the settling tank 4 is provided with a solid particle outlet 18, and the other end of the settling tank 4 is provided with a first water outlet 19.

In the present embodiment, a plurality of layers of swash plate packing 20 are disposed between the second oil outlet 16 and the solid particle outlet 18 along the vertical direction, and an oil separating film 21 is disposed between the swash plate packing 20 and the first water outlet 19.

In this embodiment, the number of layers of the inclined plate filler 20 is not less than 4, the cross section of the inclined plate filler 20 is a zigzag shape, and the length of the inclined plate filler 20 is 30% to 50% of the length of the settling tank 4.

In this embodiment, a second oil pipe 21 is provided between the settling tank 4 and the centrifugal separation tank 5, and a screw pump 22 is provided on the second oil pipe 21.

In this embodiment, the centrifugal separation tank 5 is a cone, the inner side of the sidewall of the centrifugal separation tank 5 is covered with a hydrophilic sieve plate 28, one end of the centrifugal separation tank 5 is provided with a third oil inlet 23, the top of the other end of the centrifugal separation tank 5 is provided with a third oil outlet 24, the bottom of the centrifugal separation tank 5 is provided with a second water outlet 25, and the second water outlet 25 is used for being connected with a sewage collecting port 26.

In this embodiment, the sewage collecting port 26 is provided with a sewage pipe 27, and the tempering tank 2, the settling tank 4, and the centrifugal separation tank 5 are connected to the sewage collecting port 26 through the sewage pipe 27.

In conclusion, the annual treatment of the dirty oil of a certain refinery enterprise is 10000m³45% of water, 5% of sand and 50% of oil content, and the water content of the treated sump oil is lower than 10%; the treatment device is connected with a sewage discharge port of a refining enterprise, dirty oil passes through the buffer tank 1, and the flow of the dirty oil is regulated by the buffer tank 1; the homogenized dirty oil enters the tempering tank 2 through a lift pump 13, the dirty oil in the tempering tank 2 is heated through a heating coil 14, a thermometer monitors the temperature of the dirty oil, and after standing for a certain time, a small amount of water is separated; the sewage oil after the conditioning enters an ultrasonic reaction device 3 by gravity, the emulsion breaking is carried out on the sewage oil by ultrasonic mechanical vibration and cavitation, the stability of emulsion in the sewage oil is damaged, the sewage oil is settled in a settling area 8, the sewage oil enters a sewage oil emulsion breaking area 9 through the upper part of a water distribution weir 7 and is fully contacted with an emulsion breaker sprayed by an atomizing nozzle 15, meanwhile, the emulsion breaking of the sewage oil is realized under the action of ultrasonic waves, and the sewage oil after the emulsion breaking flows out of the ultrasonic reaction device 3 through the lower part of the sewage oil emulsion breaking area 9; the demulsified dirty oil enters a settling tank 4 for oil-water separation, under the action of interception and inertial collision of the dirty oil by an inclined plate filler 20, collision among oil droplets is increased, so that small oil droplets are aggregated into large liquid droplets, and finally the large liquid droplets float out from a second oil outlet 17 and enter a centrifugal separation tank 5; under the action of the screw pump 22 with adjustable flow, the dirty oil is sent into the centrifugal separation tank 5, the hydraulic cyclone equipment is adopted for centrifugal separation, the separated water drops contact the hydrophilic sieve plate 28, the coalescence of the water drops is accelerated, the centrifugal separation tank 5 further realizes oil-water separation, sewage and impurity particles are removed, and the water content of the finally treated dirty oil is lower than 10%.

While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. The utility model provides a refinery enterprise sump oil dehydration processing apparatus which characterized in that includes:

ultrasonic reaction unit includes the shell, the inside of shell is provided with joins in marriage the weir, join in marriage the weir with form the settlement zone between the one end of shell, middle part in the shell is provided with the broken breast area of sump oil, the top of joining in marriage the weir be provided with the weir mouth of sump oil breakdown of emulsion district intercommunication, the below in the broken breast area of sump oil is provided with broken emulsion and sprays the district, the other end in the shell is provided with demulsifier atomization zone, demulsifier atomization zone pass through demulsifier pipeline with broken emulsion sprays the district and connects.

2. The refinery enterprise sump oil dehydration treatment device of claim 1, wherein the buffer tank is provided with a first oil inlet and a first oil outlet, the first oil inlet is used for being connected with a refinery enterprise sewage discharge port, the first oil outlet is connected with the conditioning tank through a first oil pipe, and the first oil pipe is provided with a lift pump.

3. The refinery-related enterprise sump oil dehydration treatment device of claim 1, wherein the tempering tank is provided with a heating coil and a thermometer.

4. The refinery enterprise sump oil dehydration treatment device of claim 1, wherein the demulsifier delivery conduit is L-shaped, the upper end of the vertical portion of the demulsifier delivery conduit is communicated with the demulsifier atomization zone, the horizontal portion of the demulsifier delivery conduit is disposed below the sump oil demulsification zone, the horizontal portion of the demulsifier delivery conduit is provided with a plurality of atomization nozzles, and the output ends of the atomization nozzles are disposed upward.

5. The refinery and chemical enterprise sump oil dehydration treatment device of claim 1, wherein one end of the settling tank is provided with a second oil inlet, the top of the settling tank is provided with a second oil outlet, the bottom of the settling tank is provided with a solid particle outlet, and the other end of the settling tank is provided with a first water outlet.

6. The refinery and chemical enterprise sump oil dehydration treatment device according to claim 5, wherein a plurality of layers of inclined plate packing are arranged between the second oil outlet and the solid particle outlet along a vertical direction, and an oil separation film is arranged between the inclined plate packing and the first water outlet.

7. The refinery enterprise sump oil dehydration treatment device of claim 6, wherein the number of layers of the inclined plate filler is not less than 4, the cross section of the inclined plate filler is zigzag, and the length of the inclined plate filler is 30% -50% of the length of the settling tank.

8. The refinery and chemical industry dirty oil dehydration device of claim 1, wherein a second oil pipe is arranged between the settling tank and the centrifugal separation tank, and a screw pump is arranged on the second oil pipe.

9. The refinery and chemical enterprise sump oil dehydration treatment device according to claim 1, wherein the centrifugal separation tank is a cone, a hydrophilic sieve plate covers the inner side of the side wall of the centrifugal separation tank, a third oil inlet is arranged at one end of the centrifugal separation tank, a third oil outlet is arranged at the top of the other end of the centrifugal separation tank, a second water outlet is arranged at the bottom of the centrifugal separation tank, and the second water outlet is used for being connected with a sewage collection port.

10. The refinery-based enterprise sump oil dehydration treatment device of claim 9, wherein the sewage collection port is provided with a sewage pipe, and the conditioning tank, the settling tank and the centrifugal separation tank are connected with the sewage collection port through the sewage pipe.