Aged oil sludge treatment equipment

Abstract

The utility model relates to the technical field of aged oil sludge treatment, and discloses aged oil sludge treatment equipment which is characterized in that a pipeline pump is connected with a pretreatment device through a pipeline, the pretreatment device is connected with a demulsification tempering tank through a pipeline, and the pretreatment device is connected with a heating device through a pipeline; the heating device is connected to a heating coil of the demulsification and tempering tank through a pipeline, the demulsification and tempering tank is connected with a liquid-liquid separator through a pipeline, the liquid-liquid separator is connected with an ultrasonic cleaning tank through a pipeline, the ultrasonic cleaning tank is connected with a three-phase separator through a pipeline, and the three-phase separator is connected with a water treatment machine through a pipeline. The three-phase separator is connected to the demulsification tempering tank through a pipeline; three phases of oil-water-sludge in the aged oil sludge are separated through a three-step method and reach the standard to be recycled or reused, so that the aged oil sludge is thoroughly treated at a time, and the treatment effect and efficiency of the aged oil sludge are improved.

Description

Technical Field

[0001] This utility model relates to the field of aged oily sludge treatment technology, specifically to an aged oily sludge treatment device. Background Technology

[0002] Aged oily sludge is a typical hazardous waste (HW08 category) generated during petrochemical, oilfield extraction, and refining processes. It mainly consists of crude oil, water, sediment, heavy metals, and emulsified pollutants. It is characterized by high viscosity, strong emulsification, and complex composition. Long-term accumulation can lead to environmental risks such as soil pollution and groundwater leakage.

[0003] In the existing technology, there is a lack of integrated solutions for the high emulsification and high viscosity characteristics of aged oily sludge, resulting in low oil recovery rate, excessive water content in the sludge phase, and difficulty in achieving reuse standards for water treatment. In addition, traditional equipment has poor adaptability to operating condition fluctuations and low degree of automation, making it difficult to meet the needs of large-scale treatment. Therefore, an aged oily sludge treatment equipment and its treatment process are proposed. Utility Model Content

[0004] The purpose of this invention is to provide an equipment for treating aged oily sludge, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aged oily sludge treatment device, comprising a pipeline pump, a pretreatment device connected to the pipeline pump via a pipeline, a demulsification and conditioning tank connected to the pretreatment device via a pipeline, a heating device connected to the pretreatment device via a pipeline, a heating coil connected to the demulsification and conditioning tank via a pipeline, a liquid-liquid separator connected to the demulsification and conditioning tank via a pipeline, an ultrasonic cleaning tank connected to the liquid-liquid separator via a pipeline, a three-phase separator connected to the ultrasonic cleaning tank via a pipeline, a water treatment machine connected to the three-phase separator via a pipeline, and the demulsification and conditioning tank connected to the three-phase separator via a pipeline.

[0006] Preferably, the pretreatment device described above is equipped with a screen, and the pipe of the heating device is located above the screen.

[0007] Preferably, the liquid-liquid separator described above is equipped with a first oil tank and a mud-water tank, and the mud-water tank is connected to the ultrasonic cleaning tank through a pipeline.

[0008] Preferably, the three-phase separator described above is equipped with a second oil tank, a water tank, and a mud tank. The second oil tank is connected to a demulsifying and conditioning tank via a pipe, and the water tank is connected to a water treatment machine via a pipe.

[0009] Preferably, the pretreatment device, demulsification and conditioning tank and ultrasonic cleaning tank described above are all equipped with a stirring device.

[0010] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects: The present invention is mainly applied to the three-step recycling process, which separates the oil, cement and three phases in the aged oily sludge and recycles or reuses them in accordance with the standards, so as to achieve a one-time complete treatment of the aged oily sludge, improve the treatment effect and efficiency of the aged oily sludge, and has a simple structure, low cost and good effect. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the system of this utility model.

[0013] Explanation of reference numerals in the attached drawings: 1. Pipeline pump; 2. Pretreatment device; 3. Screen; 4. Demulsifying and conditioning tank; 5. Heating device; 6. Liquid-liquid separator; 7. First oil tank; 8. Mud-water tank; 9. Ultrasonic cleaning tank; 10. Three-phase separator; 11. Second oil tank; 12. Water tank; 13. Mud tank; 14. Water treatment machine. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0016] Please see Figure 1This utility model provides a technical solution: an aged oily sludge treatment device, including a pipeline pump 1, a pretreatment device 2 connected to the pipeline pump 1 via a pipeline, a demulsification and conditioning tank 4 connected to the pretreatment device 2 via a pipeline, a heating device 5 connected to the pretreatment device 2 via a pipeline, the heating device 5 connected to the heating coil of the demulsification and conditioning tank 4 via a pipeline, a liquid-liquid separator 6 connected to the liquid-liquid separator 6 via a pipeline, an ultrasonic cleaning tank 9 connected to the ultrasonic cleaning tank 9 via a pipeline, a three-phase separator 10 connected to the ultrasonic cleaning tank 9 via a pipeline, a water treatment machine 14 connected to the three-phase separator 10 via a pipeline, the water treatment machine 14 being an air flotation type water treatment device, the three-phase separator 10 connected to the demulsification and conditioning tank 4 via a pipeline, the demulsification and conditioning tank 4 being equipped with a steam heating coil, the steam in the heating device 5 heating the material inside the demulsification and conditioning tank 4 through the coil.

[0017] The pretreatment device 2 is equipped with a screen 3, and the pipe of the heating device 5 is located above the screen 3. During the screening process, warm water is sprayed and rinsed.

[0018] The liquid-liquid separator 6 is equipped with a first oil tank 7 and a mud-water tank 8. The mud-water tank 8 is connected to the ultrasonic cleaning tank 9 through a pipe. The liquid-liquid separator 6 is a horizontal screw centrifuge for separating oil and mud-water. Oil-liquid separation is achieved by changing the centrifuge rotor spacing and the angle of the baffle plate. The ultrasonic cleaning tank 9 is equipped with an ultrasonic vibration plate. A gear pump is installed on the external pipeline connected to the ultrasonic cleaning tank 9. The gear pump is used for conveying.

[0019] The three-phase separator 10 is equipped with a second oil tank 11, a water tank 12 and a mud tank 13. The second oil tank 11 is connected to the demulsification and conditioning tank 4 through a pipe. The second oil tank 11 is connected to the demulsification and conditioning tank 4 through a pipe for secondary treatment. The water tank 12 is connected to the water treatment machine 14 through a pipe.

[0020] The pretreatment device 2, the demulsification and conditioning tank 4, and the ultrasonic cleaning tank 9 are all equipped with stirring devices.

[0021] This utility model is applied in the treatment process of aged oily sludge, and includes the following steps:

[0022] S1. The oil sludge is pumped from the oil sludge tank to the pretreatment device 2 using a pipeline pump 1. The particles with a diameter greater than 4mm are screened out through the screen 3. During the screening process, warm water is sprayed and washed through the heating device 5. The standard treatment capacity of the oil sludge is 10-30m³ / h, and the treatment temperature is 70℃.

[0023] S2. Start the stirring device of pretreatment unit 2, and at the same time add water according to the material condition until the solid content is less than 20%;

[0024] S3. The prepared materials are pumped into the demulsification and conditioning tank 4 by a screw pump and heated to 80°C by a heating coil. The aged oil demulsifier is added while stirring. The demulsification reaction is carried out for 20 minutes at a temperature of 75°C and a stirring speed of 400 rpm. The aged oil demulsifier is stirred for 30 minutes.

[0025] S4. The aged oily sludge after demulsification is pumped to the liquid-liquid separator 6 by a screw pump. The oily sludge in the liquid-liquid separator 6 is driven by the rotation of the screw shaft to cause the liquid to swirl. Under the action of centrifugal force and gravity, the oil after demulsification is separated by adjusting the angle of the baffle plate. The oil enters the interior of the first oil tank 7. The water content of the oil is ≤0.5%. The sludge enters the mud-water tank 8.

[0026] S5. The oily mud water in the mud and water tank 8 is transported to the ultrasonic cleaning tank 9. Oily mud cleaning agent is added to the ultrasonic cleaning tank 9, and the mud is stirred for 20 minutes under the action of ultrasound to clean the oily mud. The ultrasonic frequency is 18Hz, the ultrasonic power is 300KW, the stirring speed is 400rpm, and the cleaning time is 30 minutes.

[0027] S6. The cleaned oily sludge water is transported to the three-phase separator 10 for three-phase separation. The separated sludge enters the sludge tank 13 and is output through a screw conveyor to achieve a water content of ≤60% in the sludge. The separated oil enters the second oil tank 11 at the bottom of the three-phase separator 10 and is returned to the demulsification and conditioning tank 4 for demulsification and dehydration. The separated water enters the water tank 12 at the bottom of the three-phase separator 10 and is transported to the water treatment machine 14.

[0028] S7. The water separated from the three phases is treated with water treatment agent and steam flotation to achieve an oil content of ≤100mg / L and a COD of ≤200mg / L.

[0029] In summary, by using a three-step method to separate the oil, cement, and three phases in aged oily sludge and achieve compliant recycling or reuse, the aged oily sludge can be completely treated in one step, thus improving the treatment effect and efficiency of aged oily sludge.

Claims

1. An aging sludge treatment device, comprising a pipeline pump (1), characterized in that: The pipeline pump (1) is connected to a pretreatment device (2) via a pipeline. The pretreatment device (2) is connected to a demulsifying and conditioning tank (4) via a pipeline. The pretreatment device (2) is connected to a heating device (5) via a pipeline. The heating device (5) is connected to the heating coil of the demulsifying and conditioning tank (4) via a pipeline. The demulsifying and conditioning tank (4) is connected to a liquid-liquid separator (6) via a pipeline. The liquid-liquid separator (6) is connected to an ultrasonic cleaning tank (9) via a pipeline. The ultrasonic cleaning tank (9) is connected to a three-phase separator (10) via a pipeline. The three-phase separator (10) is connected to a water treatment machine (14) via a pipeline. The three-phase separator (10) is connected to the demulsifying and conditioning tank (4) via a pipeline.

2. The aging oily sludge treatment equipment according to claim 1, characterized in that: The pretreatment device (2) is equipped with a screen (3), and the pipe of the heating device (5) is located above the screen (3).

3. The aging oily sludge treatment equipment according to claim 1, characterized in that: The liquid-liquid separator (6) is equipped with a first oil tank (7) and a mud-water tank (8), and the mud-water tank (8) is connected to the ultrasonic cleaning tank (9) through a pipe.

4. The aging oily sludge treatment equipment according to claim 1, characterized in that: The three-phase separator (10) is equipped with a second oil tank (11), a water tank (12) and a mud tank (13). The second oil tank (11) is connected to the demulsification and conditioning tank (4) through a pipe, and the water tank (12) is connected to the water treatment machine (14) through a pipe.

5. The aging oily sludge treatment equipment according to claim 1, characterized in that: The pretreatment device (2), the demulsification and conditioning tank (4), and the ultrasonic cleaning tank (9) are all equipped with stirring devices.

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