Photocatalyst reaction evaluation device for oil field

Abstract

The utility model belongs to the field of oil field photocatalyst treatment and application, and particularly relates to a device for carrying out reaction evaluation on degradation of oil field pollutants by a photocatalyst. The utility model discloses a photocatalyst reaction evaluation device for an oil field. The photocatalyst reaction evaluation device comprises a light-proof shell, a round table top erected on the inner bottom face of the light-proof shell is arranged in the light-proof shell, magnetic stirring devices are evenly arranged on the circumference of the round table top, reaction containers are arranged on the magnetic stirring devices, pollutants, photocatalyst products and magnetic stirrers are arranged in the reaction containers, and the pollutants, the photocatalyst products and the magnetic stirrers are arranged in the reaction containers. The magnetic stirrer is matched with the magnetic stirring device; the light source is positioned above the top of the circle center of the circular desktop and is connected with an external power supply; one end of the illumination time intensity control device is connected with an external power supply, and the other end of the illumination time intensity control device is connected with the light source. According to the utility model, a photocatalyst product with the best performance of degrading oil field pollutants can be preferably selected.

Description

Technical Field

[0001] The utility model belongs to the field of oilfield photocatalyst treatment applications, and in particular relates to a device for evaluating the reaction of photocatalysts in degrading oilfield pollutants. Background Art

[0002] Currently, oilfield production inevitably produces pollutants, such as large amounts of polysulfonates in drilling wastewater, polyacrylamide in fracturing flowback fluids, and polycyclic aromatic hydrocarbons, phenolic compounds, and petroleum hydrocarbon organics in solid wastes such as crude oil-contaminated soil. In addition to degrading these pollutants, photocatalytic technology can also be widely used in water decomposition, carbon dioxide reduction, and photocatalytic antibacterial activities. Using photocatalytic technology to degrade pollutants perfectly aligns with the requirements of building a green, low-carbon, circular economic system. Therefore, the development of a device for evaluating photocatalytic reactions is necessary. Summary of the Invention

[0003] The utility model aims to solve the above problems and proposes a photocatalytic reaction evaluation device for oil fields.

[0004] The technical solution of the utility model is:

[0005] A photocatalyst reaction evaluation device for oil fields, comprising a light-tight shell; a circular tabletop is provided in the light-tight shell and stands on the inner bottom surface of the light-tight shell; magnetic stirring devices are evenly provided along the circumference of the circular tabletop; a reaction vessel is provided on the magnetic stirring device, and the reaction vessel is a reaction vessel containing pollutants, a photocatalyst product and a magnetic stirring bar, and the magnetic stirring bar matches the magnetic stirring device; the device also includes a light source located above the top center of the circular tabletop, the light source is connected to an external power supply; and the device also includes a light time intensity control device located on the upper panel of the light-tight shell, one end of the light time intensity control device is connected to the external power supply, and the other end is connected to the light source.

[0006] The illumination time intensity control device includes a 4-digit LED digital tube and a clock control module. Each LED digital tube is provided with a time setting button and a light intensity setting button. The clock control module is connected to each time setting button and light intensity setting button. The clock control module is also connected to an external power supply.

[0007] A buzzer is also provided on the upper panel of the light-proof shell, and the clock control module is connected to the buzzer.

[0008] A fan is also provided on the inner side of the rear panel of the light-proof housing facing the circular tabletop, and the fan is at the same height as the light source.

[0009] The light source is a xenon lamp.

[0010] The circular tabletop is erected on the bottom surface of the light-proof shell through three black cast iron columns forming a triangle.

[0011] The light-proof shell is provided with a movable door, which is a sliding door.

[0012] The light source, fan, magnetic stirring device and clock control module are connected with an external power source through a power plug.

[0013] Four magnetic stirring devices are evenly arranged along the circumference of the circular tabletop.

[0014] The reaction container is a conical flask with built-in pollutants, photocatalyst products and a magnetic stirrer.

[0015] The technical effect of the utility model lies in:

[0016] The utility model forms a simple and closed space in the light-proof shell, controls the photocatalyst reaction time and light intensity through the light intensity control device, removes the reaction container after reaching the preset photocatalyst reaction time, removes the photocatalyst products through high-speed centrifugal separation, takes the supernatant to test the concentration of the residual pollutants in the supernatant through the ultraviolet-visible spectrophotometer, determines the degradation performance of the four different kinds of photocatalyst products, and thus optimizes the photocatalyst product with the best degradation performance of oilfield pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of a photocatalyst reaction evaluation device for oilfields.

[0018] Reference signs: 1, power plug; 2, light-proof shell; 3, LED digital tube; 4, time setting button and light intensity setting button; 5, magnetic stirring device; 6, light source; 7, black cast iron column; 8, fan; 9, buzzer; 10, sliding door; 11, clock control module. DETAILED DESCRIPTION

[0019] Example 1

[0020] A photocatalyst reaction evaluation device for oil field, comprising a light-tight shell 2; a circular tabletop is arranged on the bottom surface of the light-tight shell 2, and magnetic stirring devices 5 are evenly arranged along the circumference of the circular tabletop; reaction containers are arranged on the magnetic stirring devices 5; the reaction containers are reaction containers with built-in pollutants, photocatalyst products and magnetic stirrers; the magnetic stirrers are matched with the magnetic stirring devices 5; a light source 6 is arranged above the top of the center of the circular tabletop; the light source 6 is connected with an external power supply; a light time intensity control device is arranged on the upper panel of the light-tight shell 2; one end of the light time intensity control device is connected with the external power supply, and the other end is connected with the light source 6.

[0021] The specific implementation process of the embodiment is as follows:

[0022] (1) The magnetic stirring devices 5 are four in number; one reaction container with built-in pollutants, photocatalyst products and magnetic stirrers is arranged on each magnetic stirring device 5; and the photocatalyst products in each reaction container are different;

[0023] (2) The device is powered on; the magnetic stirring devices 5 are powered on to drive the magnetic stirrers to start stirring; the light source 6 is turned on; the light time intensity control device is powered on; the irradiation time and intensity of the light source 6 are set through the light time intensity control device; and the irradiation time of the light source 6 is the photocatalytic reaction time.

[0024] (3) When the preset irradiation time of the light source 6 is reached, the power supply is disconnected, the light source 6 is powered off, and the photocatalytic reaction is stopped; the reaction containers are taken out, high-speed centrifugal separation is performed to remove the photocatalyst products, the supernatant is taken out, and the concentration of the remaining pollutants in the supernatant is tested through a UV-visible spectrophotometer, so as to determine the degradation performance of the four different types of photocatalyst products, and thus the photocatalyst product with the best degradation performance for oil field pollutants is selected.

[0025] Example 2

[0026] Based on the embodiment 1, the device further comprises:

[0027] The light time intensity control device comprises four LED numeral tubes 3 and a clock control module 11; each LED numeral tube 3 is provided with a time setting button and a light intensity setting button 4; the clock control module 11 is connected with each time setting button and light intensity setting button 4; and the clock control module 11 is further connected with an external power supply. A buzzer 9 is further arranged on the upper panel of the light-tight shell 2; and the clock control module 11 is connected with the buzzer 9.

[0028] The clock control module 11 is powered on, and then the LED digital tube 3 and the buzzer 9 are powered on. The photocatalytic reaction time and the light power are controlled by the time setting button and the light intensity setting button 4. The photocatalytic reaction time and light power of each reaction container are the same; when the preset photocatalytic reaction time is reached, the buzzer 9 alarms.

[0029] Example 3

[0030] On the basis of Example 2, the following is also included:

[0031] A fan 8 is also installed on the inner side of the rear panel of the light-proof housing 2, facing the circular tabletop. The fan 8 is at the same height as the light source 6 and is used to cool the light source 6; the light source 6 is a xenon lamp. The circular tabletop is supported on the inner bottom surface of the light-proof housing 2 by three black cast iron columns 7 forming a triangle.

[0032] Example 4

[0033] On the basis of Example 3, the following is also included:

[0034] The light-tight housing 2 is provided with a movable door, which is a sliding door 10; the left or right door panel of the light-tight housing 2 is a sliding door 10. The light source 6, fan 8, magnetic stirring device 5, and clock control module 11 are all connected to an external power source via a power plug 1. Four magnetic stirring devices 5 are evenly distributed around the circumference of the circular tabletop. The reaction vessel is a conical flask containing pollutants, a photocatalyst product, and a magnetic stirring bar.

[0035] The specific implementation process of this embodiment is as follows:

[0036] (1) Polysulfonates in drilling waste fluids, polyacrylamide in fracturing flowback fluids, polycyclic aromatic hydrocarbons, phenolic compounds, and petroleum hydrocarbon organic matter in solid wastes such as soil contaminated by crude oil, etc., generated during oil field exploitation, are mixed as pollutants, and equal volumes of samples are taken at a time and placed in four conical flasks of the same size. Then, four photocatalyst products of different types and equal masses are added to the conical flasks respectively. Polytetrafluoroethylene magnetic stirrers are provided in the conical flasks. After the conical flasks are sealed, they are placed on a magnetic stirring device 5, and the light-proof housing 2 is closed by a sliding door 10;

[0037] (2) The device is powered on by connecting the external power supply through the power plug 1, and the magnetic stirring device 5 is powered on to drive the polytetrafluoroethylene magnetic stirring rod to start stirring. The stirring speed is fixedly set to 60 r / min; the xenon lamp is lit, and the fan 8 starts to rotate to assist in heat dissipation of the xenon lamp. The clock control module 11 is powered on, and the irradiation time and light power of the light source 6 are set through the time setting button and the light intensity setting button 4; the irradiation time of the light source 6 is the photocatalytic reaction time; for example, the photocatalytic reaction time is 0~24h, and the xenon lamp power is 300W, 500W and 700W respectively; the irradiation time and light power are consistent during each experiment;

[0038] (3) When the preset photocatalytic reaction time is reached, the buzzer 9 sounds an alarm, the power is disconnected through the power plug 1, the fan 8 stops rotating, and the xenon lamp is powered off; the light-proof housing 2 is opened through the sliding door 10, the conical flask is taken out, and the photocatalyst product is removed by high-speed centrifugation. The supernatant liquid is taken and the concentration of the remaining pollutants in the supernatant liquid is tested by UV-visible spectrophotometer, thereby determining the degradation performance of the four different types of photocatalyst products, and thus selecting the photocatalyst product with the best performance in degrading oilfield pollutants.

[0039] The devices involved in the present invention are all commercially available products; for example, the model of the magnetic stirring device 5 is MMS-4 (4-station magnetic stirrer).

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent variations using the technical solution of the present invention patent should all fall within the scope of protection of the present invention patent.

Claims

1. A photocatalytic reaction evaluation device for oil fields, comprising a light-tight housing (2); characterized in that: The light-proof shell (2) is provided with a circular table top standing on the inner bottom surface of the light-proof shell (2), and a magnetic stirring device (5) is evenly provided along the circumference of the circular table top. A reaction container is provided on the magnetic stirring device (5), and the reaction container is a reaction container for built-in pollutants, photocatalyst products and a magnetic stirring bar, and the magnetic stirring bar matches the magnetic stirring device (5); it also includes a light source (6) located above the top of the center of the circular table top, and the light source (6) is connected to an external power supply; it also includes a light time intensity control device located on the upper panel of the light-proof shell (2), and one end of the light time intensity control device is connected to the external power supply, and the other end is connected to the light source (6).

2. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: The illumination time intensity control device comprises a 4-digit LED digital tube (3) and a clock control module (11), each LED digital tube (3) is provided with a time setting button and an illumination intensity setting button (4); the clock control module (11) is connected to each time setting button and illumination intensity setting button (4); and the clock control module (11) is also connected to an external power supply.

3. The photocatalytic reaction evaluation device for oil fields according to claim 2, characterized in that: A buzzer (9) is also provided on the upper panel of the light-tight housing (2), and the clock control module (11) is connected to the buzzer (9).

4. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: A fan (8) is also provided on the inner side of the rear panel of the light-proof housing (2) facing the circular tabletop, and the fan (8) is at the same height as the light source (6).

5. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: The light source (6) is a xenon lamp.

6. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: The circular tabletop is supported on the inner bottom surface of the light-proof shell (2) by three black cast iron columns (7) forming a triangle.

7. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: The light-proof shell (2) is provided with a movable door, which is a sliding door (10); the left door panel or the right door panel of the light-proof shell (2) is a sliding door (10).

8. The photocatalytic reaction evaluation device for oil fields according to claim 4, characterized in that: The light source (6), fan (8), magnetic stirring device (5) and clock control module (11) are all connected to an external power source via a power plug (1).

9. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: Four magnetic stirring devices (5) are evenly arranged on the circumference of the circular tabletop.

10. The photocatalytic reaction evaluation device for oil fields according to claim 1, characterized in that: The reaction container is a conical flask with pollutants, photocatalyst products and a magnetic stirrer built in it.

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