Acid high-concentration cleaning waste liquid treatment device for petroleum refinery plant device

Abstract

The utility model relates to the technical field of acidic high-concentration cleaning waste liquid treatment devices, in particular to an acidic high-concentration cleaning waste liquid treatment device for a petroleum refinery plant device. Comprising a neutralization and flocculation storage tank, a liquid storage tank, a supporting bracket, a liquid caustic soda dosing storage tank, a liquid injection pipe, an adjusting sliding rail, an adjusting sliding block, a hydraulic lifting rod, a mounting block, a mounting shaft, a mounting gear, a fixed bracket, a fixed toothed plate, an adjusting bracket, a quantitative cup, a spring hinge, a sealing cover, a dosing opening, a scraper evaporator, a liquid pumping assembly, a stirring assembly, a liquid conveying assembly, a liquid outlet assembly and a buffer assembly, a liquid storage tank is arranged on one side of the neutralization flocculation storage tank, a liquid alkali dosing storage tank is arranged above the supporting bracket, and a scraper evaporator is arranged on the other side of the neutralization flocculation storage tank. The problem that a traditional evaporator is scaled and blocked is effectively solved, and the working efficiency is improved through a quantitative liquid adding structure.

Description

Technical Field

[0001] This utility model relates to the technical field of acidic high-concentration cleaning waste liquid treatment devices, and in particular to an acidic high-concentration cleaning waste liquid treatment device for petroleum refinery units. Background Technology

[0002] During the petroleum refining process, various equipment often generate a large amount of highly concentrated acidic cleaning waste liquid after operating for a period of time. This waste liquid not only contains high concentrations of acidic substances, but may also carry various impurities and pollutants. If discharged directly, it will have a serious impact on the environment.

[0003] In practical applications, traditional waste liquid treatment methods mostly rely on a single evaporation process. However, this method has many shortcomings when treating highly concentrated acidic waste liquids. First, acidic substances are prone to forming scale during evaporation, leading to blockage of the evaporation equipment and affecting its normal operation and service life. Second, traditional dosing methods usually rely on manual operation, making it difficult to achieve precise quantitative dosing. This not only reduces work efficiency but may also affect the waste liquid treatment effect due to inaccurate dosage. Finally, the single evaporation process often fails to achieve ideal treatment results when treating complex waste liquids, and harmful substances may still remain in the waste liquid, which urgently needs improvement. Furthermore, it is inconvenient to achieve automatic cleaning and efficient dust removal of the heat dissipation structure, making it difficult to ensure the heat dissipation effect and long-term stable operation of the charging pile.

[0004] Therefore, to address the aforementioned difficulties in preventing scaling and clogging of the equipment, quantitative liquid addition, and improving work efficiency, a treatment device for high-concentration acidic cleaning wastewater from petroleum refineries can be designed. During operation, the wastewater is first transported to a neutralization and flocculation storage tank via a pumping assembly. Next, the system activates the dispensing assembly to precisely control the flow of liquid alkali from the liquid alkali dosing tank into a metering cup. When the liquid alkali in the metering cup reaches a preset value, the dispensing assembly automatically closes. Subsequently, the hydraulic lifting rod begins operation, slowly lowering the adjusting bracket and the metering cup via an adjusting slider. During descent, the bottom wall of the metering cup contacts the cap, causing it to rotate and open via a spring hinge, thus facilitating the smooth dispensing of liquid alkali. Simultaneously, the mounting gear, in conjunction with the fixed gear plate, drives the mounting shaft to rotate, which in turn causes the metering cup to flip through the adjusting bracket, ensuring that the liquid alkali can be injected evenly and fully into the neutralization and flocculation storage tank. After the liquid alkali is added, the stirring assembly is immediately started to rotate, so that the wastewater and liquid alkali are fully mixed and a neutralization reaction occurs. Finally, the wastewater after neutralization and flocculation treatment is transported to the scraped evaporator through the liquid delivery assembly. In the scraped evaporator, the wastewater is heated and evaporated, and the generated steam is introduced into the gas cooling absorption device by the fan for cooling treatment. In summary, this treatment device effectively solves the scaling and clogging problems that may occur during the operation of traditional evaporators through the combination of neutralization and flocculation and scraped evaporation processes, and improves working efficiency through the metered liquid addition structure. Utility Model Content

[0005] To overcome the shortcomings of traditional wastewater treatment methods that rely heavily on a single evaporation process, which is insufficient for treating highly concentrated acidic cleaning wastewater, the following points are addressed: First, acidic substances easily form scale during evaporation, leading to blockages in the evaporation equipment and affecting its normal operation and lifespan. Second, traditional dosing methods typically rely on manual operation, making precise quantitative dosing difficult. This not only reduces work efficiency but may also affect the wastewater treatment effect due to inaccurate dosage. Finally, the single evaporation process often fails to achieve ideal treatment results when dealing with complex wastewater, and harmful substances may still remain in the wastewater, requiring improvement. Furthermore, it hinders the automatic cleaning and efficient dust removal of the heat dissipation structure, making it difficult to ensure the heat dissipation effect and long-term stable operation of the charging pile.

[0006] The technical solution of this utility model is as follows: a treatment device for acidic high-concentration cleaning waste liquid in a petroleum refinery, comprising a neutralization and flocculation storage tank, a storage tank, a support bracket, a liquid alkali dosing tank, an injection pipe, an adjusting slide rail, an adjusting slider, a hydraulic lifting rod, a mounting block, a mounting shaft, a mounting gear, a fixed bracket, a fixed toothed plate, an adjusting bracket, a metering cup, a spring hinge, a cover, a dosing port, a scraper evaporator, a pumping assembly, a stirring assembly, a delivery assembly, a discharging assembly, and a buffer assembly. A storage tank is provided on one side of the neutralization and flocculation storage tank, and a pumping assembly is provided on one side of the storage tank. A support bracket is provided above the neutralization and flocculation storage tank, and a liquid alkali dosing tank is provided above the support bracket. An injection pipe is provided above the liquid alkali dosing tank, and a discharging assembly is provided on the bottom wall of the liquid alkali dosing tank. A dosing port is provided above the neutralization and flocculation storage tank. The inner wall of the dosing port is equipped with a spring hinge, and a cover is installed on the side wall of the spring hinge. An adjusting slide rail is installed above the neutralization flocculation storage tank. A buffer component is installed inside the adjusting slide rail. A hydraulic lifting rod is installed inside the adjusting slide rail. An adjusting slider is installed at the lower end of the hydraulic lifting rod. An installation block is installed on the side wall of the adjusting slider. An installation shaft is installed inside the installation block. An adjusting bracket is installed on the side wall of the installation shaft. A metering cup is installed on the bottom wall of the adjusting bracket. An installation gear is installed at one end of the installation shaft. A fixed bracket is installed on the side wall of the adjusting slide rail. A fixed toothed plate is installed on the side wall of the fixed bracket. The installation gear meshes with the fixed toothed plate. A stirring component is installed on the bottom wall of the neutralization flocculation storage tank. An infusion component is installed on the bottom wall of the neutralization flocculation storage tank. A scraped evaporator is installed on the other side of the neutralization flocculation storage tank.

[0007] Preferably, during the use of the acidic high-concentration cleaning waste liquid treatment device, the waste liquid is first transported to the neutralization and flocculation storage tank via the pumping component. Then, the system activates the dispensing component to precisely control the flow of liquid alkali from the liquid alkali dosing tank into the metering cup. When the liquid alkali in the metering cup reaches the preset value, the dispensing component automatically closes. Subsequently, the hydraulic lifting rod begins operation, slowly lowering the adjusting bracket and the metering cup via the adjusting slider. During the descent, the bottom wall of the metering cup contacts the cap, causing it to rotate and open via a spring hinge, thus facilitating the smooth addition of liquid alkali. Simultaneously, the mounting gear, in cooperation with the fixed gear plate, drives the mounting shaft to rotate, thereby... By adjusting the support to invert the metering cup, the liquid alkali is ensured to be injected evenly and fully into the neutralization and flocculation storage tank. After the liquid alkali is added, the stirring component is immediately started to rotate, so that the waste liquid and liquid alkali are fully mixed and a neutralization reaction occurs. Finally, the wastewater after neutralization and flocculation treatment is transported to the scraped evaporator through the liquid delivery component. In the scraped evaporator, the wastewater is heated and evaporated, and the generated steam is introduced into the gas cooling absorption device by the fan for cooling treatment. In summary, this treatment device effectively solves the scaling and clogging problems that may occur in the operation of traditional evaporators through the combination of neutralization and flocculation and scraped evaporation, and improves working efficiency through the metered liquid addition structure.

[0008] Preferably, the liquid extraction assembly includes a liquid extraction pump and a liquid extraction pipe. The liquid extraction pump is installed on one side of the liquid storage tank, and the liquid extraction pipe is installed on one side of the liquid extraction pump. One end of the liquid extraction pipe is located above the neutralization and flocculation storage tank.

[0009] Preferably, the stirring assembly includes a stirring motor and a stirring shaft. The stirring motor is installed on the bottom wall of the neutralization and flocculation storage tank, and the stirring shaft is installed at the output end of the stirring motor. The stirring shaft is located inside the neutralization and flocculation storage tank.

[0010] Preferably, the stirring assembly also includes stirring rods, which are provided on the side wall of the stirring shaft. Multiple sets of stirring rods are provided, and the stirring rods are located inside the neutralization and flocculation storage tank.

[0011] Preferably, the infusion assembly includes an infusion pump and an infusion pipe. The infusion pump is installed on the bottom wall of the neutralization flocculation tank, and the infusion pipe is installed below the infusion pump. One end of the infusion pipe is located on one side of the scraped evaporator.

[0012] Preferably, the liquid outlet assembly includes a liquid outlet pipe and a timer valve. The liquid outlet pipe is installed on the bottom wall of the liquid alkali dosing tank, and the timer valve is installed on the side wall of the liquid extraction pipe. The liquid outlet pipe is located above the metering cup.

[0013] Preferably, the buffer assembly includes an adjusting spring, with the adjusting spring installed inside the adjusting slide rail. The upper end of the adjusting spring is fixedly connected to the inner wall of the adjusting slide rail, and the other end of the adjusting spring is fixedly connected to the top of the adjusting slider.

[0014] The beneficial effects of this utility model are:

[0015] When the acidic high-concentration cleaning waste liquid treatment device is in use, the waste liquid is first transported to the neutralization and flocculation storage tank via the pumping component. Next, the system activates the dispensing component to precisely control the flow of liquid alkali from the liquid alkali dosing tank into the metering cup. When the liquid alkali in the metering cup reaches the preset value, the dispensing component automatically closes. Subsequently, the hydraulic lifting rod begins operation, slowly lowering the adjusting bracket and the metering cup via the adjusting slider. During the descent, the bottom wall of the metering cup contacts the cap, causing it to rotate and open via a spring hinge, thus facilitating the smooth addition of liquid alkali. Simultaneously, the mounting gear, in conjunction with the fixed gear plate, drives the mounting shaft to rotate, thereby... The adjustable support causes the metering cup to flip, ensuring that the liquid alkali is injected evenly and fully into the neutralization and flocculation storage tank. After the liquid alkali is added, the stirring component is immediately started to rotate, so that the waste liquid and liquid alkali are fully mixed and a neutralization reaction occurs. Finally, the wastewater after neutralization and flocculation treatment is transported to the scraped evaporator through the liquid delivery component. In the scraped evaporator, the wastewater is heated and evaporated, and the generated steam is introduced into the gas cooling absorption device by the fan for cooling treatment. In summary, this treatment device effectively solves the scaling and clogging problems that may occur in the operation of traditional evaporators through the combination of neutralization and flocculation and scraped evaporation, and improves working efficiency through the metered liquid addition structure. Attached Figure Description

[0016] Figure 1 The diagram shown is a first three-dimensional structural schematic of a treatment device for acidic high-concentration cleaning waste liquid in a petroleum refinery, according to the present invention.

[0017] Figure 2 The diagram shown is a partial three-dimensional structural schematic of a petroleum refinery unit acid high-concentration cleaning waste liquid treatment device according to the present invention.

[0018] Figure 3 The diagram shown is a partial three-dimensional structural schematic of a petroleum refinery unit acid high-concentration cleaning waste liquid treatment device according to the present invention.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the third part of a petroleum refinery unit's acidic high-concentration cleaning waste liquid treatment device according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Neutralization and flocculation storage tank; 2. Storage tank; 3. Support bracket; 4. Liquid alkali dosing tank; 5. Injection pipe; 6. Adjusting slide rail; 7. Adjusting slider; 8. Hydraulic lifting rod; 9. Mounting block; 10. Mounting shaft; 11. Mounting gear; 12. Fixed bracket; 13. Fixed toothed plate; 14. Adjusting bracket; 15. Metering cup; 16. Spring hinge; 17. Cover; 18. Dosing port; 19. Scraped evaporator; 101. Liquid pump; 102. Liquid suction pipe; 201. Stirring motor; 202. Stirring shaft; 203. Stirring rod; 301. Infusion pump; 302. Infusion pipe; 401. Discharge pipe; 402. Timer valve; 501. Adjusting spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4 This utility model provides an embodiment: a treatment device for acidic high-concentration cleaning waste liquid in an oil refinery, comprising a neutralization and flocculation storage tank 1, a storage pool 2, a support bracket 3, a liquid alkali dosing storage tank 4, an injection pipe 5, an adjusting slide rail 6, an adjusting slider 7, a hydraulic lifting rod 8, a mounting block 9, a mounting shaft 10, a mounting gear 11, a fixed bracket 12, a fixed toothed plate 13, an adjusting bracket 14, a metering cup 15, a spring hinge 16, a cover 17, a dosing port 18, and a scraper evaporator. The system includes a pumping assembly, a stirring assembly, a delivery assembly, a dispensing assembly, and a buffer assembly. A storage tank 2 is located on one side of the neutralization and flocculation storage tank 1, and a pumping assembly is located on one side of the storage tank 2. A support bracket 3 is located above the neutralization and flocculation storage tank 1, and a liquid alkali dosing tank 4 is located above the support bracket 3. An injection pipe 5 is located above the liquid alkali dosing tank 4, and a dispensing assembly is located on the bottom wall of the liquid alkali dosing tank 4. A dosing port 18 is located above the neutralization and flocculation storage tank 1. A spring hinge 16 is installed on the inner wall of the dosing port 18, and a cover 17 is installed on the side wall of the spring hinge 16. An adjusting slide rail 6 is installed above the neutralization flocculation storage tank 1. A buffer assembly is installed inside the adjusting slide rail 6. A hydraulic lifting rod 8 is installed inside the adjusting slide rail 6. An adjusting slider 7 is installed at the lower end of the hydraulic lifting rod 8. An installation block 9 is installed on the side wall of the adjusting slider 7. An installation shaft 10 is installed inside the installation block 9. An adjusting support is installed on the side wall of the installation shaft 10. A metering cup 15 is provided on the bottom wall of the adjustable support 14. An installation gear 11 is provided at one end of the mounting shaft 10. A fixed support 12 is provided on the side wall of the adjustable slide rail 6. A fixed toothed plate 13 is provided on the side wall of the fixed support 12. The mounting gear 11 meshes with the fixed toothed plate 13. A stirring assembly is provided on the bottom wall of the neutralization flocculation storage tank 1. An infusion assembly is provided on the bottom wall of the neutralization flocculation storage tank 1. A scraped evaporator 19 is provided on the other side of the neutralization flocculation storage tank 1.

[0023] Please see Figure 2 The liquid extraction assembly includes a liquid extraction pump 101 and a liquid extraction pipe 102. The liquid extraction pump 101 is located on one side of the storage tank 2, and the liquid extraction pipe 102 is located on one side of the pump 101. One end of the liquid extraction pipe 102 is positioned above the neutralization and flocculation storage tank 1. Firstly, the liquid extraction pump 101 draws the accumulated acidic high-concentration cleaning waste liquid in the storage tank 2 through the liquid extraction pipe 102 and transports it to the neutralization and flocculation storage tank 1. The stirring assembly includes a stirring motor 201 and a stirring shaft 202. The stirring motor 201 is located on the bottom wall of the neutralization and flocculation storage tank 1. The output of the stirring motor 201... A stirring shaft 202 is provided at one end and is located inside the neutralization and flocculation storage tank 1. When the stirring motor 201 is started, the stirring shaft 202 can be driven to rotate. The stirring assembly also includes stirring rods 203. Stirring rods 203 are provided on the side wall of the stirring shaft 202. There are multiple sets of stirring rods 203. When the stirring motor 201 is started, the stirring shaft 202 and multiple sets of stirring rods 203 driven by its output end begin to rotate. These stirring rods 203 generate a strong stirring effect in the neutralization and flocculation storage tank 1.

[0024] Please see Figures 3-4 The infusion assembly includes an infusion pump 301 and an infusion pipe 302. The infusion pump 301 is installed on the bottom wall of the neutralization and flocculation storage tank 1, and the infusion pipe 302 is installed below the infusion pump 301. One end of the infusion pipe 302 is located on one side of the scraped evaporator 19. The wastewater after neutralization and flocculation treatment is transported to the scraped evaporator 19 by the action of the infusion pump 301. The discharge assembly includes an discharge pipe 401 and a timer valve 402. The discharge pipe 401 is installed on the bottom wall of the liquid alkali dosing storage tank 4, and the suction pipe 1... A timer valve 402 is provided on the side wall of 02, and the liquid outlet pipe 401 is located above the metering cup 15. Activating the timer valve 402 will open the liquid outlet pipe 401. The buffer assembly includes an adjusting spring 501. An adjusting spring 501 is provided inside the adjusting slide rail 6. The upper end of the adjusting spring 501 is fixedly connected to the inner wall of the adjusting slide rail 6, and the other end of the adjusting spring 501 is fixedly connected to the upper part of the adjusting slider 7. By adjusting the elastic characteristics of the adjusting spring 501, the stable movement effect of the device can be improved.

[0025] During the operation of the acidic high-concentration cleaning waste liquid treatment device, the acidic high-concentration cleaning waste liquid accumulated in the storage tank 2 is first drawn from the storage tank 2 by the pump 101 through the pumping pipe 102 and transported to the neutralization and flocculation storage tank 1. Then...

[0026] The system activates timer valve 402 to precisely control the flow of liquid alkali from the liquid alkali dosing tank 4 into the metering cup 15 via the outlet pipe 401. When the liquid alkali in the metering cup 15 reaches the preset value, timer valve 402 automatically closes, ensuring that the amount of liquid alkali added each time is accurate. This precise control is crucial for the subsequent neutralization effect of the waste liquid.

[0027] Subsequently, the hydraulic lifting rod 8 begins operation, causing the adjusting bracket 14 and its metering cup 15 to slowly descend via the adjusting slider 7. During descent, the bottom wall of the metering cup 15 contacts the cap 17, causing it to rotate and open via the spring hinge 16, thus facilitating the smooth addition of liquid alkali. Simultaneously, the mounting gear 11, in cooperation with the fixed toothed plate 13, drives the mounting shaft 10 to rotate, which in turn causes the metering cup 15 to flip via the adjusting bracket 14, ensuring that the liquid alkali can be injected evenly and fully into the neutralization and flocculation storage tank 1.

[0028] After the liquid alkali is added, the stirring motor 201 starts immediately, and its output drives the stirring shaft 202 and multiple sets of stirring rods 203 to start rotating. These stirring rods 203 generate a strong stirring effect in the neutralization and flocculation storage tank 1, so that the waste liquid and liquid alkali are fully mixed and a neutralization reaction occurs. This process helps to remove acidic substances from the waste liquid and reduce its corrosiveness.

[0029] Finally, the wastewater, after neutralization and flocculation treatment, is pumped to the scraped evaporator 19 by the infusion pump 301. Inside the scraped evaporator 19, the wastewater is heated and evaporated. The generated steam is introduced into a gas cooling absorption device by a fan for cooling. The cooled water is recycled within the system, while the concentrate produced during evaporation is periodically discharged to the wastewater treatment system for further treatment. Simultaneously, to ensure stable system operation, fresh water needs to be periodically added to the system as makeup water.

[0030] In summary, this treatment device effectively solves the scaling and clogging problems that may occur during the operation of traditional evaporators through a combination of neutralization flocculation and scraper evaporation processes, and improves working efficiency through a quantitative liquid addition structure.

[0031] Through the above steps, when the acidic high-concentration cleaning waste liquid treatment device is in use, the waste liquid is first transported to the neutralization and flocculation storage tank 1 through the liquid pumping component. Then, the system activates the liquid dispensing component to precisely control the flow of liquid alkali from the liquid alkali dosing tank 4 into the metering cup 15. When the liquid alkali in the metering cup 15 reaches the preset value, the liquid dispensing component automatically closes. Subsequently, the hydraulic lifting rod 8 starts working, and through the adjusting slider 7, it drives the adjusting bracket 14 and the metering cup 15 on it to slowly descend. During the descent, the bottom wall of the metering cup 15 contacts the cap 17 and causes it to rotate and open via the spring hinge 16, thus enabling the smooth addition of liquid alkali. Simultaneously, the mounting gear 11, in cooperation with the fixed gear plate 13, drives the mounting... The shaft 10 rotates, which in turn causes the metering cup 15 to flip via the adjusting bracket 14, ensuring that the liquid alkali can be injected evenly and fully into the neutralization and flocculation storage tank 1. After the liquid alkali is added, the stirring component is immediately started to rotate, so that the waste liquid and liquid alkali are fully mixed and a neutralization reaction occurs. Finally, the wastewater after neutralization and flocculation treatment is transported to the scraped evaporator 19 through the liquid conveying component. In the scraped evaporator 19, the wastewater is heated and evaporated, and the generated steam is introduced into the gas cooling absorption device by the fan for cooling treatment. In summary, this treatment device effectively solves the scaling and clogging problems that may occur during the operation of traditional evaporators through the combination of neutralization and flocculation and scraped evaporation, and improves working efficiency through the metered liquid addition structure.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A treatment device for acidic high-concentration cleaning wastewater from an oil refinery, comprising a neutralization and flocculation storage tank (1), characterized in that: It also includes a storage tank (2), a support bracket (3), a liquid alkali dosing tank (4), an injection pipe (5), an adjusting slide rail (6), an adjusting slider (7), a hydraulic lifting rod (8), a mounting block (9), a mounting shaft (10), a mounting gear (11), a fixed bracket (12), a fixed toothed plate (13), an adjusting bracket (14), a metering cup (15), a spring hinge (16), a cap (17), a dosing port (18), a scraper evaporator (19), a liquid extraction assembly, a stirring assembly, a liquid delivery assembly, a liquid outlet assembly, and a buffer. The components include a neutralization and flocculation storage tank (1) with a storage tank (2) on one side, a pumping assembly on one side of the storage tank (2), a support bracket (3) above the neutralization and flocculation storage tank (1), a liquid alkali dosing tank (4) above the support bracket (3), an injection pipe (5) above the liquid alkali dosing tank (4), a liquid outlet assembly on the bottom wall of the liquid alkali dosing tank (4), a dosing port (18) above the neutralization and flocculation storage tank (1), and a spring hinge (16) on the inner wall of the dosing port (18). A cover (17) is provided on the side wall of the spring hinge (16). An adjusting slide rail (6) is provided above the neutralizing flocculation storage tank (1). A buffer assembly is provided inside the adjusting slide rail (6). A hydraulic lifting rod (8) is provided inside the adjusting slide rail (6). An adjusting slider (7) is provided at the lower end of the hydraulic lifting rod (8). An installation block (9) is provided on the side wall of the adjusting slider (7). An installation shaft (10) is provided inside the installation block (9). An adjusting bracket (14) is provided on the side wall of the installation shaft (10). A metering cup (15) is provided on the bottom wall of (14), an installation gear (11) is provided at one end of the mounting shaft (10), a fixed bracket (12) is provided on the side wall of the adjusting slide rail (6), a fixed toothed plate (13) is provided on the side wall of the fixed bracket (12), the installation gear (11) meshes with the fixed toothed plate (13), a stirring assembly is provided on the bottom wall of the neutralization flocculation storage tank (1), an infusion assembly is provided on the bottom wall of the neutralization flocculation storage tank (1), and a scraped evaporator (19) is provided on the other side of the neutralization flocculation storage tank (1).

2. The device for treating acidic high-concentration cleaning wastewater from a petroleum refinery according to claim 1, characterized in that: The liquid extraction assembly includes a liquid extraction pump (101) and a liquid extraction pipe (102). The liquid extraction pump (101) is provided on one side of the liquid storage tank (2), and the liquid extraction pipe (102) is provided on one side of the liquid extraction pump (101). One end of the liquid extraction pipe (102) is located above the neutralization flocculation storage tank (1).

3. The device for treating acidic high-concentration cleaning wastewater from a petroleum refinery according to claim 1, characterized in that: The stirring assembly includes a stirring motor (201) and a stirring shaft (202). The stirring motor (201) is installed on the bottom wall of the neutralization flocculation storage tank (1), and the stirring shaft (202) is installed at the output end of the stirring motor (201). The stirring shaft (202) is located inside the neutralization flocculation storage tank (1).

4. The device for treating acidic high-concentration cleaning wastewater from a petroleum refinery according to claim 3, characterized in that: The stirring assembly also includes stirring rods (203). Stirring rods (203) are provided on the side wall of the stirring shaft (202). Multiple sets of stirring rods (203) are provided. The stirring rods (203) are located inside the neutralization flocculation storage tank (1).

5. The device for treating acidic high-concentration cleaning wastewater from a petroleum refinery according to claim 3, characterized in that: The infusion assembly includes an infusion pump (301) and an infusion pipe (302). The infusion pump (301) is installed on the bottom wall of the neutralization flocculation storage tank (1), and the infusion pipe (302) is installed below the infusion pump (301). One end of the infusion pipe (302) is located on one side of the scraped evaporator (19).

6. The device for treating acidic high-concentration cleaning wastewater from a petroleum refinery according to claim 3, characterized in that: The liquid dispensing assembly includes a liquid dispensing pipe (401) and a timer valve (402). The liquid alkali dosing storage tank (4) has a liquid dispensing pipe (401) on its bottom wall and a timer valve (402) on its side wall. The liquid dispensing pipe (401) is located above the metering cup (15).

7. The device for treating acidic high-concentration cleaning wastewater from a petroleum refinery according to claim 3, characterized in that: The buffer assembly includes an adjusting spring (501). The adjusting slide rail (6) is equipped with an adjusting spring (501). The upper end of the adjusting spring (501) is fixedly connected to the inner wall of the adjusting slide rail (6), and the other end of the adjusting spring (501) is fixedly connected to the top of the adjusting slider (7).

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