Nanometer washing composite ultrasonic demulsification device

Abstract

The utility model belongs to the technical field of oily sludge treatment, and relates to a nano water washing composite ultrasonic demulsification device which is used for monitoring the temperature in a conditioning tank and controlling the temperature in the conditioning tank within a specified range under the action of a control unit and a heating unit so as to realize constant-temperature stirring of to-be-treated oily sludge in the conditioning tank; corresponding three-phase partition design is carried out in the ultrasonic enhanced demulsification tank, upper oil collection, middle water drainage and bottom sludge discharge are achieved, a material opening formed in the side wall of the rectangular solid-liquid separation box is communicated with a discharging opening of the tempering tank, mixed material feeding can be achieved, after three-phase separation is completed, a control unit is used for controlling a sludge pump to rotate reversely, and the sludge pump is used for discharging sludge. According to the present invention, the separated intermediate water can be fed into the modulation tank so as to achieve the recycling of the intermediate water, such that the advantages of low manufacturing cost, strong field adaptability, simple operation and the like are provided, the crude oil can be recovered to the maximum extent, the hazardous waste discharge can be reduced, and the enterprise cost can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oily sludge treatment, and relates to a nano-water washing composite ultrasonic demulsification device. Background Art

[0002] Oily sludge is the main pollutant generated during oil exploration, transportation and storage. It is characterized by high water content, complex components, many impurities and great treatment difficulty. Generally, it is a stable emulsion system composed of water-in-oil, oil-in-water and solid suspended matter, as well as various treatment agents used in the production process. If oily sludge is not treated in time, first, its volatile hydrocarbons are easy to pollute the air; second, its long-term stacking will pollute a larger range of soil and water bodies; third, the teratogenic, carcinogenic and mutagenic substances contained will directly endanger the health of humans and livestock.

[0003] The key to oil-water separation of oily sludge is demulsification. In the prior art, chemical, biological and physical demulsification methods are used. Among them, physical demulsification is mainly ultrasonic demulsification. Ultrasonic demulsification refers to using the cavitation effect, mechanical vibration effect and thermal effect generated by the propagation of ultrasonic waves in a liquid medium for demulsification. Under the action of ultrasonic waves, a large number of microbubbles are generated in the oily sludge. When these microbubbles grow to an unstable size, they violently collapse and generate a strong shock wave, reducing the strength of the oil-water interface film and the viscosity of the emulsion, thereby promoting oil-water separation; the mechanical vibration effect promotes the aggregation of "particles" in water. Under the action of ultrasonic waves, the oil-phase substances in the oily sludge continuously move, aggregate, collide and fuse towards the wave nodes. The volume and mass of the oil-phase substances increase, coalescing into larger oil droplets, and the large oil droplets float up and gather, separating from the water phase; the heat energy converted by the oily sludge absorbing part of the sound energy reduces the strength of the oil-water interface film and the viscosity of the emulsion, which is conducive to the sedimentation separation of the oil and water phases. The existing ultrasonic demulsification has the advantage of no secondary pollution, but the technical difficulty is great, and the problems of insufficient demulsification or secondary emulsification generally exist in current applications.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] The purpose of the present utility model is to overcome the above-mentioned disadvantages of the prior art, and provide a nano-water washing composite ultrasonic demulsification device, which realizes a good demulsification and oil removal effect on highly emulsified oily sludge by adding nano-water to the heating and conditioning demulsification tank and then compounding with an ultrasonic intensifying demulsification tank.

[0006] The purpose of the present utility model is solved by the following technical solutions:

[0007] This nano - water - washing composite ultrasonic demulsification device includes a conditioning tank. The discharge port of the conditioning tank is connected to the feed port of an ultrasonic - enhanced demulsification tank through a pipeline, and a sludge pump is arranged on the pipeline. Inside the ultrasonic - enhanced demulsification tank, from top to bottom, there are an interconnected oil collection area, a separation area, and a sedimentation area. The oil collection area is equipped with an oil suction device for sucking out the upper - layer oil, and the oil suction device is also connected to a diaphragm pump for driving the oil suction device to discharge the oil in the oil collection area. The separation area is distributed with rectangular solid - liquid separation boxes, and the feed port is located on the side wall of the rectangular solid - liquid separation box. Inside the rectangular solid - liquid separation box, a plurality of ultrasonic generators are evenly arranged, and all the ultrasonic generators are connected to an ultrasonic controller. The sedimentation area is equipped with an inclined - plate sedimentation tank, and a sludge discharge port is opened at the bottom of the inclined - plate sedimentation tank.

[0008] Further, the conditioning tank is a conical tank.

[0009] Further, a temperature sensor is arranged inside the conditioning tank, and a heating unit is arranged at the bottom of the conditioning tank. The temperature sensor and the heating unit are respectively connected to a control unit, and the control unit is located in a control box on the outer wall of the ultrasonic - enhanced demulsification tank.

[0010] Further, a stirring motor is arranged at the top of the conditioning tank. The output rotating shaft of the stirring motor is connected to a stirring shaft, and stirring blades are arranged on the stirring shaft. The stirring motor is connected to the control unit.

[0011] Further, the heating unit is a PTC heating element.

[0012] Further, a heat - insulating layer is arranged inside the tank wall of the conditioning tank.

[0013] Further, a liquid - level sensor is arranged in the oil collection area, and the liquid - level sensor is connected to the control unit. When the liquid - level sensor detects that the oil level reaches the set height, the control unit starts the diaphragm pump and the oil suction device to work. When the oil suction device starts to suck out water, the control unit controls the oil suction device and the diaphragm pump to stop working.

[0014] Further, a filter screen is arranged at the feed port.

[0015] Further, inside the conditioning tank is a mixture of oily sludge and nano - water, and the nano - water is an aqueous solution added with a nano - demulsifier.

[0016] Further, the sludge discharged from the sludge discharge port enters a sludge dewatering unit through a sludge discharge pipeline.

[0017] Compared with the prior art, the technical solution provided by the present utility model has the following beneficial effects: By combining the nano water washing and ultrasonic demulsification processes, and by monitoring the temperature in the conditioning tank in real time and controlling the temperature in the conditioning tank within a specified range under the action of the control unit and the heating unit, the oil-containing sludge to be treated in the conditioning tank is stirred at a constant temperature; then, through the corresponding structural design of the three-phase partition of oil, water, and mud in the ultrasonic enhanced demulsification tank, oil is collected at the upper part, water is drained in the middle part, and mud is discharged at the bottom, and the material port opened on the side wall of the rectangular solid-liquid separation tank is connected to the discharge port of the conditioning tank through a pipeline. In addition to being able to realize the feeding of the mixed material, after the three-phase separation of the oil-containing sludge is completed, by controlling the sludge pump to reverse, the separated intermediate water can be sent back to the conditioning tank to realize the recycling and reuse of the intermediate water.

[0018] In addition, through the control box on the outer wall of the ultrasonic enhanced demulsification tank, the control unit inside it realizes the on / off of all electrical equipment through the control panel outside the control box. The whole device has the advantages of low manufacturing cost, strong site adaptability, simple operation, etc., can be used as a high-emulsion oil sludge treatment device, recover crude oil to the greatest extent, reduce hazardous waste emissions, and reduce the costs of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings here are incorporated into the specification and form a part of this specification, and are used together with the specification to explain the principle of the present utility model.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a structural diagram of a nano water washing composite ultrasonic demulsification device provided by the present utility model;

[0022] Figure 2 It is a principle block diagram of the nano water washing composite ultrasonic demulsification device provided by the present utility model.

[0023] Wherein: 1. Conditioning tank; 1-1. Discharge port; 2. Sludge pump; 3. Ultrasonic enhanced demulsification tank; 4. Oil absorber; 5. Diaphragm pump; 6. Rectangular solid-liquid separation tank; 7. Material port; 8. Ultrasonic generator; 9. Ultrasonic controller; 10. Inclined plate sedimentation tank; 11. Mud discharge port; 12. Temperature sensor; 13. Control unit; 14. Heating unit; 15. Control box; 16. Stirring motor; 17. Stirring shaft; 18. Liquid level sensor; 19. Movable trolley. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Here, exemplary embodiments will be described in detail, and their examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of devices consistent with some aspects of the present invention detailed in the appended claims.

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Embodiment 1

[0027] See Figure 1 As shown, the present invention provides a nano - water - washing composite ultrasonic demulsification device, including a conditioning tank 1. The discharge port 1 - 1 of the conditioning tank 1 is connected to the feed port 7 of the ultrasonic - enhanced demulsification tank 3 through a pipeline, and a sludge pump 2 is arranged on the pipeline. The ultrasonic - enhanced demulsification tank 3 is divided into an oil - collecting area, a separation area, and a sedimentation area that communicate with each other from top to bottom. The oil - collecting area is equipped with an oil absorber 4 for sucking out the upper - layer oil, and the oil absorber 4 is also connected to a diaphragm pump 5 for driving the oil absorber 4 to discharge the oil in the oil - collecting area. The separation area is distributed with rectangular solid - liquid separation boxes 6, and the feed port 7 is located on the side wall of the rectangular solid - liquid separation box 6. A plurality of ultrasonic generators 8 are evenly arranged in the rectangular solid - liquid separation box 6, and the plurality of ultrasonic generators 8 are all connected to an ultrasonic controller 9. The sedimentation area is equipped with an inclined - plate sedimentation tank 10, and the bottom of the inclined - plate sedimentation tank 10 is provided with a sludge discharge port 11.

[0028] Further, the conditioning tank 1 is a conical heating tank, and the number of conditioning tanks 1 can be arranged according to the actual situation on site.

[0029] Further, a temperature sensor 12 is arranged in the conditioning tank 1, a heating unit 14 is arranged at the bottom of the conditioning tank 1, the temperature sensor 12 and the heating unit 14 are respectively connected to a control unit 13, the control unit 13 is located in a control box 15 on the outer wall of the ultrasonic - enhanced demulsification tank 3, the control box 15 is provided with a control panel, and start / stop buttons for respectively controlling other electrical devices such as a stirring motor 16 and a heating wire are arranged on the control panel.

[0030] Further, a stirring motor 16 is arranged at the top of the conditioning tank 1, the output rotating shaft of the stirring motor 16 is connected to a stirring shaft 17, stirring blades are arranged on the stirring shaft 17, and the stirring motor 16 is connected to the control unit 13.

[0031] Further, the heating unit 14 is a PTC heating element.

[0032] Furthermore, a heat-insulating layer is provided inside the tank wall of the conditioning tank 1.

[0033] Furthermore, a liquid level sensor 18 is provided in the oil collection area, and the liquid level sensor 18 is connected to the control unit 13; when the liquid level sensor detects that the oil level reaches the set height, the control unit starts the diaphragm pump and the oil absorber to work. When the oil absorber starts to suck out water, the control unit controls the oil absorber and the diaphragm pump to stop working.

[0034] Furthermore, a filter screen may be provided at the material inlet 7; wherein, the material inlet 7 can be used as the feed inlet of the ultrasonic enhanced demulsification tank 3, so that the mixed material in the conditioning tank 1 enters the ultrasonic enhanced demulsification tank 3 under the action of the sludge pump 2 for three-phase separation. In addition, in addition to being able to realize the feeding of the mixed material, after the three-phase separation of the oily sludge is completed, by controlling the sludge pump 2 to reverse through the control unit 13, the separated intermediate water can be sent back to the conditioning tank 1 to realize the recycling and reuse of the intermediate water.

[0035] Furthermore, the inside of the conditioning tank 1 is a mixture of oily sludge and nano water, and the nano water is an aqueous solution added with a nano demulsifier.

[0036] Furthermore, the sludge discharged from the sludge outlet 11 enters the sludge dewatering unit through the sludge discharge pipeline.

[0037] In summary, the nano water washing composite ultrasonic demulsification device provided by the present utility model has the following usage process:

[0038] 1) Add the oily sludge to be treated into the conical tank through the feed inlet of the first conditioning tank, and at the same time add nano water in a corresponding proportion. Through the control unit 13, turn on the heating unit 14 and start the stirring motor 16, and set the heating temperature to 55 °C and the rotation speed to 180 r / min to mix the oily sludge to be treated with the nano water to form a mixed material;

[0039] 2) After heating and stirring for 30 min, turn on the sludge pump 2 to transport the mixed material to the ultrasonic enhanced demulsification tank 3 for oil, water, and sludge separation. The ultrasonic frequency is 10 KHz and the power is 1800 W. After ultrasonic cleaning for 3 min, start the diaphragm pump 5 to drive the oil absorber 4 to suck out the upper-layer oil. When the oil absorber 4 starts to suck out water, turn off the diaphragm pump 5. After sedimentation for 30 min, the separated intermediate water is returned to the second conditioning tank for use; the sludge is discharged through the sludge outlet 11 opened at the bottom of the inclined plate sedimentation tank 10 and enters the sludge dewatering unit;

[0040] 3) Add the oily sludge to be treated into the second conditioning tank in a certain proportion, turn on the heating unit 14, start the stirring motor 16, and set the heating temperature to 55 °C and the rotation speed to 180 r / min to mix the oily sludge to be treated with the recycled intermediate water to form a mixed material;

[0041] 4) After heating and stirring for 30 min, turn on the sludge pump 2 to transport the mixed material to the ultrasonic enhanced demulsification tank 3 for oil, water, and sludge separation. The ultrasonic frequency is 10 KHz, and the power is 1800 W. After ultrasonic cleaning for 3 min, start the diaphragm pump 5 to drive the oil absorber 4 to suck out the upper-layer oil. When the oil absorber 4 starts to suck out water, turn off the diaphragm pump 5. After sedimentation for 30 min, under the action of the sludge pump 2, water is discharged from the material port 7 of the rectangular solid-liquid separation tank 6; the sludge is discharged through the sludge discharge port 11 opened at the bottom of the inclined plate sedimentation tank 10 and enters the sludge dewatering unit.

[0042] Example 2

[0043] Based on Example 1, the difference from Example 1 is that the conditioning tank 1, the sludge pump 2, and the ultrasonic enhanced demulsification tank 3 are all located on the movable trolley 19. Operators can move the device to the oily sludge to be treated according to actual needs for operation, and at the same time lock the rollers of the movable trolley 19 to avoid shaking of the entire device during operation.

[0044] Specifically, the conditioning tank 1 is a conical double-layer heat-insulating tank. The heating unit 14 uses heating wires, and the heating wires are spirally wound around the outer wall of the inner-layer tank body. The temperature sensor 12 and the heating wires are respectively connected to the control unit 13. The control unit 13 is located in the control box 15 on the outer wall of the ultrasonic enhanced demulsification tank 3. The control box 15 is provided with a control panel, and the control panel is provided with start / stop buttons for controlling the stirring motor 16 and the heating wires respectively.

[0045] In summary, the device combines the nano-water washing and ultrasonic demulsification processes. By real-time monitoring the temperature in the conditioning tank 1 and controlling the temperature in the conditioning tank 1 within a specified range under the action of the control unit 13 and the heating unit 14, constant-temperature stirring of the oily sludge to be treated in the conditioning tank 1 is achieved; then, through the corresponding structural design of the three-phase partition of oil, water, and mud in the ultrasonic enhanced demulsification tank 3, oil collection in the upper part, water drainage in the middle part, and sludge discharge at the bottom are realized; in addition, the material port 7 opened on the side wall of the rectangular solid-liquid separation tank 6 is connected to the discharge port 1-1 of the conditioning tank 1. In addition to realizing the feeding of the mixed material, after the three-phase separation of the oily sludge is completed, by controlling the reverse rotation of the sludge pump 2 through the control unit 13, the separated intermediate water can be sent back into the conditioning tank 1 to realize the recycling and reuse of the intermediate water. The entire device has the advantages of low manufacturing cost, strong site adaptability, and simple operation, and can be operated as a high-emulsification oily sludge treatment device, maximizing the recovery of crude oil, reducing hazardous waste emissions, and reducing enterprise costs.

[0046] The above are only specific embodiments of the present utility model, enabling those skilled in the art to understand or implement the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model.

[0047] It should be understood that the present utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

Claims

1. A nano - water - washing composite ultrasonic demulsification device, characterized in that, it includes a conditioning tank (1), the discharge port (1 - 1) of the conditioning tank (1) is connected to the feed port (7) of the ultrasonic enhanced demulsification tank (3) through a pipeline, and a sludge pump (2) is arranged on the pipeline; inside the ultrasonic enhanced demulsification tank (3), it is divided into an oil collection area, a separation area and a sedimentation area that are interconnected from top to bottom; the oil collection area is equipped with an oil suction device (4) for sucking out the upper - layer oil, and the oil suction device (4) is also connected to a diaphragm pump (5) for driving the oil suction device (4) to discharge the oil in the oil collection area; the separation area is distributed with rectangular solid - liquid separation boxes (6), and the feed port (7) is located on the side wall of the rectangular solid - liquid separation box (6); a plurality of ultrasonic generators (8) are evenly arranged in the rectangular solid - liquid separation box (6), and the plurality of ultrasonic generators (8) are all connected to an ultrasonic controller (9); the sedimentation area is equipped with an inclined - plate sedimentation tank (10), and a sludge discharge port (11) is opened at the bottom of the inclined - plate sedimentation tank (10); a temperature sensor (12) is arranged inside the conditioning tank (1), a heating unit (14) is arranged at the bottom of the conditioning tank (1), the temperature sensor (12) and the heating unit (14) are respectively connected to a control unit (13), and the control unit (13) is located in a control box (15) on the outer wall of the ultrasonic enhanced demulsification tank (3); a liquid - level sensor (18) is arranged in the oil collection area, and the liquid - level sensor (18) is connected to the control unit (13); a stirring motor (16) is arranged at the top of the conditioning tank (1), the output rotating shaft of the stirring motor (16) is connected to a stirring shaft (17), stirring blades are arranged on the stirring shaft (17), and the stirring motor (16) is connected to the control unit (13); the inside of the conditioning tank (1) is a mixture of oily sludge and nano - water; the conditioning tank (1) is a conical tank, and a heat - insulating layer is arranged inside the conditioning tank (1).

2. The nano - water - washing composite ultrasonic demulsification device according to claim 1, characterized in that, the heating unit (14) is a PTC heating element.

3. The nano - water - washing composite ultrasonic demulsification device according to claim 1, characterized in that, a filter screen is arranged at the feed port (7).

4. The nano - water - washing composite ultrasonic demulsification device according to claim 1, characterized in that, the sludge discharged from the sludge discharge port (11) enters the sludge dewatering unit through a sludge discharge pipeline.

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