Cleanable multi-stage ultrasonic dirty oil treatment device

Abstract

The utility model relates to a cleanable multi-stage ultrasonic dirty oil treatment device which comprises a treatment cabinet, a bracket, a dirty oil inlet interface, a dirty oil outlet interface, an upper partition plate, a lower partition plate, a stirrer, an ultrasonic transducer, a heating coil, a cleaning pipe, a steam blowing pipe and the like. Upper partition plates and lower partition plates are sequentially arranged in the treatment cabinet box body in a staggered mode from the dirty oil inlet side to the dirty oil outlet side, and the treatment cabinet is divided into a plurality of treatment cabins connected in series. A cleaning pipe is independently arranged at the upper part of the treatment cabin, and a steam purging pipe is arranged at the lower part of the treatment cabin, so that the interior of the treatment device can be regularly cleaned, and the use efficiency of the device is improved. Besides the first treatment cabin is provided with a stirrer and a heating coil pipe, the other treatment cabins are all provided with ultrasonic transducers and heating coil pipes, when dirty oil sequentially flows through all the treatment cabins, dirty oil stirring, heating and multi-stage series ultrasonic transducer continuous demulsification operation are completed, the demulsification quality is guaranteed, and it is also guaranteed that dirty oil separation is more stable and efficient.

Description

Technical Field

[0001] The present invention relates to a waste oil demulsification device, and particularly to a multi-stage ultrasonic waste oil treatment device that can be cleaned. Background Art

[0002] A large amount of waste oil is generated during oil and gas exploration, transportation, refining, and treatment of oilfield sewage. Waste oil is a stable emulsion system of water-in-oil or oil-in-water in which petroleum hydrocarbons, resins, asphaltenes, mud, sand, inorganic flocs, organic flocs, water, and other organic and inorganic substances are firmly bonded together. It has characteristics such as high viscosity, difficult separation, toxicity, and harmfulness. Among them, the emulsification stability of resin and asphaltene waste oil is the most affected. They both have amphiphilic functional groups and can be firmly adsorbed on the oil-water interface film and solid surface. Due to the complex composition and strong stability of water-containing waste oil, it is difficult to demulsify and dehydrate using conventional separation methods such as gravity sedimentation and chemical methods.

[0003] Currently, new methods for waste oil treatment mainly include magnetic treatment, membrane separation, ultrasonic waves, etc. Among them, when ultrasonic waves act on fluid media with different properties, displacement effects and collisions will occur, thereby realizing oil-water separation. It can relatively quickly achieve the demulsification of waste oil and greatly improve the dehydration efficiency.

[0004] Chinese Patent CN201610898543.9 discloses "an ultrasonic crude oil demulsification and dehydration system". This system uses secondary ultrasonic dehydration and two-stage sedimentation separation. Although the demulsification effect of this system is good, it has the problem of large floor area.

[0005] Chinese Patent CN200710046268.9 discloses "an ultrasonic demulsification and oil removal device", which includes a housing, an ultrasonic demulsification chamber, and an air flotation separation chamber. Among them, the ultrasonic demulsification chamber is separated by several partition plates. The function of the partition plates in the ultrasonic demulsification chamber is to separate the ultrasonic generators to prevent the superposition or focusing of ultrasonic waves, which may cause secondary emulsification of the liquid to be treated. Although this device is provided with multiple ultrasonic generators, it can only perform one-time ultrasonic treatment on waste oil, so the demulsification effect cannot be guaranteed. In addition, there is no cleaning device inside this device, and waste oil is likely to adhere to the ultrasonic tool head and the wall surface, resulting in problems such as easy attenuation of the use efficiency of the demulsification device after the device has been used for a period of time. Summary of the Invention

[0006] In order to overcome the problems in the prior art such as poor demulsification effect, large floor area of the demulsification device, and easy attenuation of the demulsification efficiency of the device caused by the absence of a cleaning device inside the demulsification device, the present utility model provides a multi-stage ultrasonic waste oil treatment device that can be cleaned, which can achieve multi-stage ultrasonic demulsification with a relatively small floor area, ensure the quality of waste oil after treatment, and can also regularly clean the inside of the demulsification device to improve the use efficiency of the demulsification device.

[0007] The technical solution adopted by the present utility model to achieve the above object is as follows:

[0008] A cleanable multi-stage ultrasonic waste oil treatment device includes a treatment cabinet, a bracket, a waste oil inlet interface, a waste oil outlet interface, an upper partition board, a lower partition board, a motor, a stirrer, an ultrasonic transducer, a horn tool head, a waste oil heating coil, a cleaning pipe, a steam purging pipe and a sewage discharge interface. The treatment cabinet body is a rectangular box, the bottom of the treatment cabinet is funnel-shaped, a bracket is provided below the treatment cabinet, a waste oil inlet interface is provided on the side plate of one side of the treatment cabinet, and a waste oil outlet interface is provided on the side plate of the opposite side. Inside the treatment cabinet body, from the waste oil inlet side to the waste oil outlet side, the upper partition board and the lower partition board are alternately arranged in sequence. The upper end and the left and right sides of the upper partition board are respectively welded to the top plate and the side plate of the treatment cabinet, and the lower end and the left and right sides of the lower partition board are respectively welded to the bottom plate and the side plate of the treatment cabinet, dividing the treatment cabinet into multiple series-connected treatment compartments. Among them, a motor is provided at the top of the first treatment compartment near the waste oil inlet side, the output end of the motor is connected to the stirrer inside the treatment compartment, and a waste oil heating coil is provided between the stirrer and the wall surface of the treatment compartment. The two ends of the waste oil heating coil are respectively connected to an external steam pipeline and a condensate pipeline through a steam inlet interface and a condensate outlet interface on the side plate of the treatment cabinet. Ultrasonic transducers are provided at the top of the remaining treatment compartments, the output ends of the ultrasonic transducers are connected to the horn tool heads inside the treatment compartments, a cleaning pipe is independently provided at the upper part of the treatment compartment, multiple groups of circumferential spray holes are provided on the cleaning pipe, the cleaning pipe is connected to an external cleaning medium pipeline through a cleaning interface provided at the top of the treatment compartment, a steam purging pipe is provided at the lower part of the treatment compartment, multiple groups of spray holes are provided on the steam purging pipe, the steam purging pipe is connected to an external steam pipeline through a steam purging interface on the side plate of the treatment cabinet, sewage discharge interfaces are provided at the lowest positions of the bottoms of the treatment compartments, the sewage discharge interfaces are connected to a sewage pipeline, and a sewage valve is provided on the sewage pipeline.

[0009] The number of the lower partition boards is n, n≥1, and the number of the upper partition boards is m, m = n + 1.

[0010] Both the waste oil inlet interface and the waste oil outlet interface are provided at the upper part of the side plate of the treatment cabinet, and the position of the waste oil outlet interface is higher than the middle part of the transducer tool head.

[0011] A waste oil heating coil is provided between the horn tool head and the wall surface of the treatment compartment, and the two ends of the waste oil heating coil are respectively connected to an external steam pipeline and a condensate pipeline through a steam inlet interface and a condensate outlet interface on the side plate of the treatment cabinet.

[0012] The lower edge of the first upper partition plate near the dirty oil inlet side is located at the position of 1 / 3 height of the treatment cabinet body. The space formed between the first lower partition plate near the dirty oil inlet side, the side plate on the dirty oil inlet side, the side plate of the treatment cabinet, and the lower edge of the first upper partition plate is the 1-2 communication cabin. In the 1-2 communication cabin, there is a 1-2 communication cabin heating coil, which is respectively connected to the external steam pipeline and the external condensate pipeline through the 1-2 communication cabin steam interface and the 1-2 communication cabin condensate interface arranged on the side plate of the treatment cabinet.

[0013] There is a heat insulation and insulation layer outside the treatment cabinet, and a tracing device is arranged between the treatment cabinet and the heat insulation and insulation layer.

[0014] There is a sampling port on the side plate of the treatment cabinet on the dirty oil outlet side. There are three said sampling interfaces, which are respectively arranged at the upper, middle, and lower parts of the side plate of the treatment cabinet.

[0015] There is a liquid level switch and a temperature sensor on the side plate of the treatment cabinet on the dirty oil outlet side. There are two said liquid level switches, which are respectively arranged at the upper and lower parts of the side plate of the treatment cabinet.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) The device of the present utility model can regularly clean the inside of the demulsification device, improving the use efficiency of the demulsification device. Using the treated oil-water or light dirty oil and other media to high-pressure jet wash the inner wall surface of the cabin, the heating coil, the amplitude-changing tool head, and the residual dirty oil on the stirrer through multiple openings in the circumferential direction of the cleaning pipe wall from the top of the cabin. At the same time, the high-pressure steam is introduced into the bottom steam purging pipe to directly heat the cleaning medium, dilute and reduce its viscosity, ensure fluidity, and steam blow out the residual dirty oil at the bottom to ensure the smoothness of the sewage outlet. The sloping bottom plate enables the oil liquid to flow by gravity to the sewage outlet at the low point, and is connected to the external sewage collection cabinet through the sewage interface, the sewage pipe, and the sewage valve.

[0018] (2) Under the condition of limited floor area, the device of the present utility model can ensure the treatment quality of the dirty oil. Inside the treatment cabinet body, from the dirty oil inlet side to the dirty oil outlet side, upper partition plates and lower partition plates are alternately arranged in sequence, dividing the treatment cabinet into multiple series-connected treatment cabins, and each treatment cabin is provided with a dirty oil heating coil. In addition, except for the first treatment cabin where a stirrer is arranged, ultrasonic transducers are arranged in the remaining treatment cabins. When the dirty oil flows through each treatment cabin in sequence, the effects of dirty oil stirring, heating, and continuous demulsification by multiple series-connected ultrasonic transducers are completed, and continuous heating ensures more stable and efficient separation of oil and water.

[0019] (3) The device of the present utility model can achieve automatic control, thus making the device more energy-saving and efficient. A high-level liquid level switch, a low-level liquid level switch, a temperature sensor, and a sampling interface are provided on the treatment cabinet. The liquid level switch provides an electrical signal to control the operation of the ultrasonic transducer. When the level is high, the ultrasonic transducer starts to work, and when the level is low, the ultrasonic transducer stops. The temperature sensor controls the temperature of the waste oil treatment and controls the switch of the waste oil heating coil and the working conditions of the heating steam parameters according to its level. The high-level, middle-level, and low-level sampling interfaces can obtain the demulsification results of the treated waste oil, and control the switch of the number of ultrasonic transducers or adjust the power according to the results.

[0020] (4) The waste oil outlet interface of the device of the present utility model is set at a high position, above the middle of the transducer tool head. The high-level discharge of the waste oil prevents the secondary emulsification of the waste oil and ensures the separation effect of the waste oil. Description of the Drawings

[0021] Figure 1 Schematic cross-sectional structure diagram of the cleanable multi-stage ultrasonic waste oil treatment device of the present utility model;

[0022] In the figure, 1: ultrasonic transducer; 2: motor; 3: stirrer; 4: cleaning interface; 5: waste oil inlet interface; 6: treatment cabinet; 7: 1-2 communication chamber steam interface; 8: 1-2 communication chamber condensate interface; 9: steam purge interface; 10: 1-2 communication chamber heating coil; 11: steam inlet interface; 12: waste oil heating coil; 13: condensate outlet interface; 14: steam purge pipe; 15: cleaning pipe; 16: high-level liquid level switch; 17: high-level sampling interface; 18: waste oil outlet interface; 19: temperature sensor; 20: middle-level sampling interface; 21: low-level liquid level switch; 22: low-level sampling interface; 23: upper partition; 24: lower partition; 25: bottom plate; 26: sewage discharge interface; 27: sewage discharge valve; 28: sewage discharge pipeline; 29: support; 30: amplitude-changing tool head; 31: heat insulation and insulation layer; 32: tracing heat. Detailed Embodiment

[0023] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0024] The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0025] AsFigure 1 As shown in the figure, a washable multi-stage ultrasonic waste oil treatment device includes a treatment cabinet 6, a bracket 29, a waste oil inlet interface 5, a waste oil outlet interface 18, an upper partition 23, a lower partition 24, a motor 2, a stirrer 3, an ultrasonic transducer 1, a horn 30, a waste oil heating coil 12, a cleaning pipe 15, a steam purging pipe 14, and a sewage discharge interface 26. The cabinet body of the treatment cabinet 6 is a rectangular box, the bottom of the treatment cabinet 6 is funnel-shaped, and a bracket 29 is provided below the treatment cabinet 6.

[0026] A waste oil inlet interface 5 is provided on the right side plate of the treatment cabinet 6, and a waste oil outlet interface 18 is provided on the left side plate of the treatment cabinet 6. Both the waste oil inlet interface 5 and the waste oil outlet interface 18 are arranged at the upper part of the side plate of the treatment cabinet 6, and the position of the waste oil outlet interface 18 is higher than the middle part of the horn 30. This setting enables the treated waste oil to be discharged at a high position, which not only prevents the secondary emulsification of the waste oil but also ensures the waste oil separation effect.

[0027] Inside the box body of the treatment cabinet 6, from the waste oil inlet side (right side) to the waste oil outlet side (left side), 3 upper partitions 23 and 2 lower partitions 24 are alternately arranged in sequence. The upper ends and the left and right sides of the upper partition 23 are welded to the top plate and the side plate of the treatment cabinet 6 respectively, and the lower ends and the left and right sides of the lower partition 24 are welded to the bottom plate 25 and the side plate of the treatment cabinet 6 respectively, dividing the treatment cabinet 6 into 6 serially connected treatment compartments. The first compartment from right to left is the stirring and preheating compartment, and the remaining 5 compartments are continuous ultrasonic waste oil treatment compartments. Among them, a motor 2 is provided at the top of the stirring and preheating compartment, the output end of the motor 2 is connected to the stirrer 3 inside the treatment compartment, and a waste oil heating coil 12 is also provided between the stirrer 3 and the wall surface of the treatment compartment 6. Both ends of the waste oil heating coil 12 are connected to the external steam pipeline and the condensate pipeline respectively through the steam inlet interface 11 and the condensate outlet interface 13 on the side plate of the treatment cabinet 6. Ultrasonic transducers 1 are provided at the top of the remaining 5 treatment compartments, and the output ends of the ultrasonic transducers 1 are connected to the horns 30 inside the treatment compartments. A waste oil heating coil 12 is provided between the horn 30 and the wall surface of the treatment compartment, and both ends of the waste oil heating coil are connected to the external steam pipeline and the condensate pipeline respectively through the steam inlet interface 11 and the condensate outlet interface 13 on the side plate of the treatment cabinet.

[0028] The lower edge of the first upper partition 23 in the stirring and preheating compartment is located at the position of 1 / 3 height of the cabinet body of the treatment cabinet 6. The space formed between the first lower partition 24 close to the waste oil inlet side, the waste oil inlet side plate, the treatment cabinet side plate, and the lower edge of the first upper partition 23 is the 1-2 communication cabin. An on-off heating coil 10 is provided in the 1-2 communication cabin, and is connected to the external steam pipeline and the external condensate pipeline respectively through the 1-2 communication cabin steam interface 7 and the 1-2 communication cabin condensate interface 8 provided on the side plate of the treatment cabinet.

[0029] When the waste oil flows through each treatment tank in sequence, the waste oil stirring, heating, and continuous demulsification treatment by multi-stage series ultrasonic transducers are completed, which not only ensures the demulsification quality but also makes the oil-water separation more stable and efficient.

[0030] A cleaning pipe 15 is independently provided at the upper part of the treatment tank. Multiple groups of circumferential injection holes are provided on the cleaning pipe 15. The cleaning pipe 15 is connected to the external cleaning medium pipeline through a cleaning interface 4 provided at the top of the treatment tank. A steam purging pipe 14 is provided at the lower part of the treatment tank. Multiple groups of injection holes are provided on the steam purging pipe 14. The steam purging pipe 14 is connected to the external steam pipeline through a steam purging interface 9 on the side plate of the treatment cabinet. Drainage interfaces 26 are provided at the lowest positions at the bottom of the treatment tank. The drainage interfaces 26 are connected to a drainage pipeline 28. A drainage valve 27 is provided on the drainage pipeline 28. When cleaning the device, media such as treated oil-water or light waste oil are used to perform high-pressure jet flushing on the inner wall surface of the tank, the heating coil, the horn tool head 30, and the residual waste oil on the stirrer 3 through multiple openings in the circumferential direction of the wall of the cleaning pipe 15 from the top of the chamber. At the same time, high-pressure steam is introduced into the bottom steam purging pipe 14 to directly heat the cleaning medium, dilute and reduce its viscosity to ensure fluidity, and steam is used to blow away the residual waste oil at the bottom to ensure the smoothness of the drainage interface 26. The inclined bottom plate 25 enables the oil liquid to flow by itself to the low-point drainage interface 26, and is connected to the external drainage collection cabinet through the drainage interface 26, the drainage pipeline 28, and the drainage valve 27.

[0031] Three sampling ports are provided on the side plate of the treatment cabinet 6 on the waste oil outlet side, namely a high-level sampling interface 17 provided at the upper part of the side plate of the treatment cabinet, a middle-level sampling interface 20 provided in the middle of the side plate, and a low-level sampling interface 22 provided at the lower part of the side plate. Two liquid level switches are provided on the side plate of the treatment cabinet on the waste oil outlet side, namely a high-level liquid level switch 16 provided at the upper part of the side plate of the treatment cabinet and a low-level liquid level switch 21 provided at the lower part of the side plate. A temperature sensor 19 is also provided on the side plate of the treatment cabinet on the waste oil outlet side. The sampling interface can obtain the demulsification result of the treated waste oil, and control the switch of the number of ultrasonic transducers 1 or adjust the power according to the result; the liquid level switch provides an electrical signal to control the operation of the ultrasonic transducer 1. The ultrasonic transducer 1 starts to work at a high level and stops at a low level; the temperature sensor 19 controls the waste oil treatment temperature and controls the switch of the waste oil heating coil 12 and the working conditions of the heating steam parameters according to its high or low level. Through these sensors, the automatic control of the device can be realized, making the device more energy-saving and efficient.

[0032] When the device stops, to prevent the temperature of the waste oil in the treatment cabinet 6 from dropping, heat insulation and insulation treatment are performed on the outside of the treatment cabinet 6. A copper pipe is arranged between the treatment cabinet 6 and the heat insulation and insulation layer 31 for heat tracing 32 to improve the working efficiency of the device, achieving the effects of preheating at startup, heating during operation, and heat preservation during shutdown.

Claims

1. A washable multi-stage ultrasonic waste oil treatment device, comprising a treatment cabinet, a bracket, a waste oil inlet interface, a waste oil outlet interface, an upper partition board, a lower partition board, a motor, a stirrer, an ultrasonic transducer, a horn, a waste oil heating coil, a cleaning pipe, a steam purging pipe and a sewage discharge interface, characterized in that: The treatment cabinet body is a rectangular box, the bottom of the treatment cabinet is funnel-shaped, a bracket is provided below the treatment cabinet, an oil sewage inlet interface is provided on the side plate of one side of the treatment cabinet, and an oil sewage outlet interface is provided on the side plate of the opposite side. Inside the treatment cabinet body, from the oil sewage inlet side to the oil sewage outlet side, upper partitions and lower partitions are alternately arranged in sequence. The upper end and the left and right sides of the upper partition are welded to the top plate and the side plate of the treatment cabinet respectively, and the lower end and the left and right sides of the lower partition are welded to the bottom plate and the side plate of the treatment cabinet respectively, dividing the treatment cabinet into multiple series-connected treatment compartments. Among them, a motor is provided at the top of the first treatment compartment near the oil sewage inlet side, the output end of the motor is connected to a stirrer inside the treatment compartment, and an oil sewage heating coil is provided between the stirrer and the wall surface of the treatment compartment. The two ends of the oil sewage heating coil are respectively connected to an external steam pipeline and a condensate pipeline through a steam inlet interface and a condensate outlet interface on the side plate of the treatment cabinet. Ultrasonic transducers are provided at the tops of the remaining treatment compartments, and the output ends of the ultrasonic transducers are connected to horn tool heads inside the treatment compartments. A cleaning pipe is independently provided at the upper part of the treatment compartment, multiple groups of circumferential spray holes are provided on the cleaning pipe, and the cleaning pipe is connected to an external cleaning medium pipeline through a cleaning interface provided at the top of the treatment compartment. A steam purging pipe is provided at the lower part of the treatment compartment, multiple groups of spray holes are provided on the steam purging pipe, and the steam purging pipe is connected to an external steam pipeline through a steam purging interface on the side plate of the treatment cabinet. Drainage interfaces are provided at the lowest positions of the bottoms of the treatment compartments, the drainage interfaces are connected to a drainage pipeline, and a drain valve is provided on the drainage pipeline.

2. The multi-stage ultrasonic waste oil treatment device capable of being cleaned according to claim 1, wherein, The number of the lower partitions is n, n≥1, and the number of the upper partitions is m, m = n + 1.

3. The multi-stage ultrasonic waste oil treatment device capable of being cleaned according to claim 2, wherein Both the oil sewage inlet interface and the oil sewage outlet interface are provided at the upper part of the side plate of the treatment cabinet, and the position of the oil sewage outlet interface is higher than the middle part of the horn tool head.

4. The washable multi-stage ultrasonic waste oil treatment device according to claim 3, characterized in that, An oil sewage heating coil is provided between the horn tool head and the wall surface of the treatment compartment, and the two ends of the oil sewage heating coil are respectively connected to an external steam pipeline and a condensate pipeline through a steam inlet interface and a condensate outlet interface on the side plate of the treatment cabinet.

5. A washable multi-stage ultrasonic waste oil treatment device according to claim 4, characterized in that, The lower edge of the first upper partition near the oil sewage inlet side is located at the position of 1 / 3 of the height of the treatment cabinet body. The space formed between the first lower partition near the oil sewage inlet side, the side plate on the oil sewage inlet side, the side plate of the treatment cabinet, and the lower edge of the first upper partition is a 1-2 communication cabin. A 1-2 communication cabin heating coil is provided in the 1-2 communication cabin, and is respectively connected to an external steam pipeline and an external condensate pipeline through a 1-2 communication cabin steam interface and a 1-2 communication cabin condensate interface provided on the side plate of the treatment cabinet.

6. The multi-stage ultrasonic waste oil treatment device capable of being cleaned according to claim 5, characterized in that, A heat insulation and insulation layer is provided outside the treatment cabinet, and a tracing device is arranged between the treatment cabinet and the heat insulation and insulation layer.

7. An oil-contaminated water treatment device with multi-stage ultrasonic cleaning according to claim 2, 3, 4, 5 or 6, characterized in that, A sampling port is provided on the side plate of the treatment cabinet on the oil sewage outlet side.

8. A cleanable multi-stage ultrasonic waste oil treatment device according to claim 7, characterized in that, There are three sampling ports, which are respectively arranged at the upper, middle, and lower parts of the side plate of the treatment cabinet.

9. A washable multi-stage ultrasonic waste oil treatment device according to claim 2, 3, 4, 5 or 6, characterized in that, A liquid level switch and a temperature sensor are provided on the side plate of the treatment cabinet on the oil sewage outlet side.

10. A washable multi-stage ultrasonic waste oil treatment device according to claim 9, characterized in that, There are two liquid level switches, which are respectively arranged at the upper and lower parts of the side plate of the treatment cabinet.

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