Air floatation-rotational flow enhanced oil-water separation experimental analysis device

Abstract

The invention provides an air floatation-rotational flow enhanced oil-water separation experimental analysis device. The air floatation-rotational flow enhanced oil-water separation experimental analysis device comprises a mixing module, a gas injection module and a separation module, the mixing module comprises a crude oil storage tank, a crude oil flow control valve, a water tank, a water flow control valve, an oil-water mixer, an outlet valve, a pump, a circulating oil inlet valve and a circulating water inlet valve. According to the air flotation-cyclone separator, air injection at different positions and under different conditions in the air flotation-cyclone separator can be achieved, the optimal condition of air flotation cyclone is analyzed, the flow characteristic of an internal flow field under the air flotation cyclone condition is obtained, and cyclic utilization of fluid can be achieved.

Description

Technical Field

[0001] The present application relates to the field of petrochemical technology, and in particular to an air flotation-cyclone enhanced oil-water separation experimental analysis device. Background Art

[0002] At present, the separation methods of oil-water mixture mainly include mechanical method and chemical method, and the commonly used mechanical methods include gravity method, centrifugal separation and coagulation method.

[0003] The gravity method uses the different densities of oil and water. When left to stand for a period of time under natural conditions, the water and oil will naturally separate to form two layers, upper and lower. This method is the basic method for separating water and oil. Since it is a natural separation, this method is time-consuming and the separation efficiency is not high.

[0004] The centrifugal method also uses the difference in density between the oil and water phases to generate centrifugal force through the high-speed rotation of the separation equipment, thereby achieving the separation of oil and water. The centrifugal method has a wide range of applications and high separation efficiency, but the method has complex equipment and occupies a large area, making it difficult to apply to small laboratories.

[0005] The coalescence method is an accelerated gravity separation method that combines the coalescence process and the gravity separation process into one unit. This method has the advantages of high separation efficiency and short residence time. However, the separation equipment is large in size and is not suitable for laboratory use. Summary of the invention

[0006] In view of this, the present application provides an air flotation-cyclone enhanced oil-water separation experimental analysis device, which has a simple structure, strong applicability, and can significantly improve the oil-water separation efficiency.

[0007] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0008] An air flotation-cyclone enhanced oil-water separation experimental analysis device, comprising a mixing module, an air injection module, and a separation module;

[0009] The mixing module includes: a crude oil storage tank, a crude oil flow control valve, a water tank, a water flow control valve, an oil-water mixer, an outlet valve, a pump, a circulating oil inlet valve and a circulating water inlet valve;

[0010] The crude oil storage tank and the oil-water mixer are connected via a crude oil flow control valve, and the water tank and the oil-water mixer are connected via a water flow control valve;

[0011] The gas injection module includes: a compressed gas cylinder, a gas flow control valve, a compressor, an external mixing pipe section gas injection control valve, a transparent gas injection pipe section, a connecting flange, a cylindrical section gas injection zone 1, a cylindrical section gas injection zone 2, a cylindrical section gas injection zone 3, a cylindrical section gas injection master valve, a cylindrical section zone 1 gas injection valve, a cylindrical section zone 2 gas injection valve, a cylindrical section zone 3 gas injection valve, a large cone section gas injection zone 1, a large cone section gas injection zone 2, a large cone section gas injection zone 3, a large cone section gas injection master valve, a large cone section zone 1 gas injection valve, a large cone section zone 2 gas injection valve, a large cone section zone 3 gas injection valve, Small cone section gas injection zone 1, small cone section gas injection zone 2, small cone section gas injection zone 3, small cone section gas injection master valve, small cone section zone 1 gas injection valve, small cone section zone 2 gas injection valve, small cone section zone 3 gas injection valve, tail pipe section gas injection zone 1, tail pipe section gas injection zone 2, tail pipe section gas injection zone 3, tail pipe section gas injection master valve, tail pipe section zone 1 gas injection valve, tail pipe section zone 2 gas injection valve, tail pipe section zone 3 gas injection valve, inner pipe zone 1, inner pipe zone 2, inner pipe zone 3, inner pipe master valve, inner pipe zone 1 gas injection valve, inner pipe zone 2 gas injection valve and inner pipe zone 3 gas injection valve;

[0012] The compressed gas cylinder is connected to the outer mixed pipe section gas injection control valve, the cylindrical section gas injection master valve, the large cone section gas injection master valve, the small cone section gas injection master valve, the tail pipe section gas injection master valve and the inner pipe gas injection master valve respectively through the gas flow control valve; the outer mixed pipe section gas injection control valve is connected to the transparent gas injection pipe section; the cylindrical section gas injection master valve is connected to the cylindrical section zone 1 gas injection valve, the cylindrical section zone 2 gas injection valve and the cylindrical section zone 3 gas injection valve; the large cone section gas injection master valve is connected to the large cone section zone 1 gas injection valve, the large cone section zone 2 gas injection valve and the cylindrical section zone 3 gas injection valve The gas injection valve is connected to the gas injection valve of the third zone of the large cone section; the main gas injection valve of the small cone section is connected to the gas injection valve of the first zone of the small cone section, the gas injection valve of the second zone of the small cone section and the gas injection valve of the third zone of the small cone section; the main gas injection valve of the tail pipe section is connected to the gas injection valve of the first zone of the tail pipe section, the gas injection valve of the second zone of the tail pipe section and the gas injection valve of the third zone of the tail pipe section; the main gas injection valve of the inner pipe is connected to the gas injection valve of the first zone of the inner pipe section, the gas injection valve of the second zone of the inner pipe section and the gas injection valve of the third zone of the inner pipe section; the outlet valve is connected to the transparent gas injection pipe section through a pump and a connecting flange;

[0013] The separation module comprises: a cyclone separator, a separation gas phase outlet valve, a circulating oil inlet valve, an air flotation-cyclone separator and a separation gas storage tank;

[0014] The flotation-cyclone separator is connected to the cyclone separator through the separator inlet valve, the cyclone separator is connected to the separation gas storage tank through the separation gas phase outlet valve, the cyclone separator is connected to the oil-water mixer through the circulating oil inlet valve, and the flotation-cyclone separator is connected to the oil-water mixer through the circulating water inlet valve.

[0015] Optionally, the oil-water mixer includes: a heating device, an agitator, a crude oil feed port, a water feed port, a circulating oil feed port, and a circulating water feed port. The heating device is located outside the oil-water mixer, the agitator is located at the bottom of the oil-water mixer, the crude oil feed port is connected to a crude oil storage tank, and the water feed port is connected to a water tank.

[0016] Optionally, the flotation-cyclone separator is entirely made of transparent fiberglass.

[0017] Optionally, the inner tube is a hollow cylindrical shape.

[0018] The beneficial effects of this application are:

[0019] 1. This application has the advantages of compact test process layout, simple structure and easy operation; by observing, recording and analyzing the influence of the gas volume fraction and the split ratio in the flotation-cyclone separator on the separation efficiency, as well as the relationship between the split ratio and the pressure drop ratio, and comparing them, it provides a basis for improving the oil-water separation efficiency and lays the foundation for further improving the bubble / droplet dynamics and the gas-liquid two-phase flow theory system.

[0020] 2. The present application can realize the recycling of fluids through re-separation of the separation unit and re-mixing of the mixing unit, thereby saving experimental costs;

[0021] 3. The gas injection module of this application uses partitions and can control the switches of different valves to achieve comparative studies of different positions and different gas injection diameters;

[0022] 4. The gas injection module of this application is equipped with a transparent pipe section and a fiberglass reinforced plastic device, which can observe the movement state and internal conditions of the fluid without stopping operation, such as the collision, adhesion, and desorption of microbubbles and oil droplets;

[0023] 5. This application can achieve the function of selecting different gases to compare the oil-water separation efficiency by replacing gas cylinders with different components.

[0024] 6. This application uses a monitoring probe to accurately detect the internal flow state and can feed the data back to the computer, which can provide a data basis for in-depth research on the collision, adhesion, and desorption process of microbubbles and oil droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a structural diagram of the flotation-cyclone enhanced oil-water separation experimental analysis device of the present application.

[0027] Figure 1 In: 1. Crude oil storage tank, 2. Crude oil flow control valve, 3. Water tank, 4. Water flow control valve, 5. Oil-water mixer, 6. Outlet valve, 7. Pump, 8a. Flange, 8b. Flange, 8c. Flange, 9. Compressed gas cylinder, 10. Gas flow control valve, 11. Compressor, 12. Main gas injection valve for cylindrical section, 13. Gas injection valve for zone 1 of cylindrical section, 14. Gas injection valve for zone 2 of cylindrical section, 15. Gas injection valve for zone 3 of cylindrical section, 16. Main gas injection valve for large cone section, 17. Gas injection valve for zone 1 of large cone section, 18. Gas injection valve for zone 2 of large cone section, 19. Gas injection valve for zone 3 of large cone section, 20. Main gas injection valve for small cone section, 21. Gas injection valve for zone 1 of small cone section, 22. Gas injection valve for zone 2 of small cone section, 23. Gas injection valve for zone 3 of small cone section, 24. Main gas injection valve for tail pipe section, 25. Gas injection valve for zone 1 of tail pipe section, 26, gas injection valve for zone 2 of tail pipe section, 27, gas injection valve for zone 3 of tail pipe section, 28, main gas injection valve for inner pipe, 29, gas injection valve for zone 1 of inner pipe, 30, gas injection valve for zone 2 of inner pipe, 31, gas injection valve for zone 3 of inner pipe, 32, gas injection zone of cylindrical section, 32a, gas injection zone 1 of cylindrical section, 32b, gas injection zone 2 of cylindrical section, 32c, gas injection zone 3 of cylindrical section, 33, gas injection zone of large cone section, 34, gas injection zone of small cone section, 35, gas injection zone of tail pipe section, 36, gas injection zone of inner pipe, 37, transparent gas injection pipe section, 38, separator inlet valve, 39, separation gas phase outlet valve, 40, cyclone separator, 41, gas injection control valve for external mixed pipe section, 42, circulating oil inlet valve, 43, circulating water inlet valve, 44, air flotation-cyclone separator, 45, separation gas storage tank. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0029] The density of gas in the three phases of oil, gas and water is the smallest. When gas is injected into the cyclone through the microporous tube, the gas passes through the pores of the microporous tube and enters the cyclone cavity. In the flow field, bubbles that are adapted to the size of the oil droplets meet the oil droplets to form an oil-gas complex. The density of the oil-gas complex is smaller than that of the oil droplets. Under the action of strong centrifugal force, the oil-gas complex gathers toward the axis faster than the oil droplets. At the same time, the bubbles will also bring some small oil droplets that cannot be separated by conventional cyclones into the core, achieving the synergistic effect of air flotation and cyclone separation, and improving the separation effect of the cyclone.

[0030] The air flotation cyclone combined enhanced oil-water separation technology of the present application utilizes this principle. On the one hand, it utilizes the density difference between different media in the hydrocyclone for centrifugal separation. On the other hand, it utilizes the characteristics of the air flotation technology that the surface tension between oil and water is greater than the surface tension between oil and gas, and oil is hydrophobic while gas is relatively hydrophilic. It uses microporous tubes to generate small bubbles, and uses the small bubbles to carry oil droplets to the overflow port to achieve separation. The air flotation cyclone combined enhanced oil-water separation technology is a clever combination of cyclone separation technology and air flotation technology. It is a new type of hydrocyclone that overcomes the shortcomings of conventional liquid-liquid hydrocyclones and has the dual functions of removing oil and suspended solids. It has a small lower limit of effective flotation concentration, a fast flotation speed, and a low flotation cost.

[0031] In order to study the flotation law of the device, improve the bubble / droplet dynamics and gas-liquid two-phase flow theory system, and more accurately guide the optimal design of the air flotation-cyclone combined enhanced oil-water separation device, it is very necessary to design a reasonable and economical air flotation-cyclone enhanced oil-water separation experimental device.

[0032] like Figure 1 As shown, the present application provides an air flotation-cyclone enhanced oil-water separation experimental analysis device, including a mixing module, an air injection module, and a separation module;

[0033] The mixing module includes: a crude oil storage tank 1, a crude oil flow control valve 2, a water tank 3, a water flow control valve 4, an oil-water mixer 5, an outlet valve 6, a pump 7, a circulating oil inlet valve 42 and a circulating water inlet valve 43;

[0034] The crude oil storage tank 1 and the oil-water mixer 5 are connected via a crude oil flow control valve 2, and the water tank 3 and the oil-water mixer 5 are connected via a water flow control valve 4;

[0035] The crude oil storage tank 1 introduces the crude oil into the oil-water mixer 5 through the crude oil flow control valve 2. Similarly, the raw water enters the oil-water mixer 5 from the water tank 2 through the water flow control valve 4. At the same time, the processed circulating raw materials enter the oil-water mixer 5 for reuse through respective valves 42 and 43. The oil-in-water particles formed after mixing are transported to the separation module through the outlet valve 6 and the pump 7.

[0036] The gas injection module includes: a compressed gas cylinder 9, a gas flow control valve 10, a compressor 11, an external mixing pipe section gas injection control valve 41, a transparent gas injection pipe section 37, and a transparent pipe section connecting flange 8a. 、8b, 8c, cylindrical section gas injection zone 1 32a, cylindrical section gas injection zone 2 32b, cylindrical section gas injection zone 32c, cylindrical section gas injection main valve 12, cylindrical section zone 1 gas injection valve 13, cylindrical section zone 2 gas injection valve 14, cylindrical section zone 3 gas injection valve 15, large cone section gas injection zone 1 33a, large cone section gas injection zone 2 33b, large cone section gas injection zone 33c, large cone section gas injection main valve 16, large cone section zone 1 gas injection valve 17, large cone section zone 2 gas injection valve 18, large cone section zone 3 gas injection valve 19, small cone section gas injection zone 1 34a, small cone section gas injection zone 2 34b, small cone section gas injection zone 3 4c, small cone section gas injection main valve 20, small cone section zone 1 gas injection valve 21, small cone section zone 2 gas injection valve 22, small cone section zone 3 gas injection valve 23, tail pipe section zone 1 gas injection 35a, tail pipe section zone 2 gas injection 35b, tail pipe section zone 3 gas injection 35c, tail pipe section gas injection main valve 24, tail pipe section zone 1 gas injection valve 25, tail pipe section zone 2 gas injection valve 26, tail pipe section zone 3 gas injection valve 27, inner pipe zone 1 36a, inner pipe zone 2 36b, inner pipe zone 3 36c, inner pipe main gas injection valve 28, inner pipe zone 1 gas injection valve 29, inner pipe zone 2 gas injection valve 30 and inner pipe zone 3 gas injection valve 31;

[0037] The compressed gas cylinder 9 is connected to the outer mixed pipe section gas injection control valve 41, the cylindrical section gas injection master valve 12, the large cone section gas injection master valve 16, the small cone section gas injection master valve 20, the tail pipe section gas injection master valve 24 and the inner pipe gas injection master valve 28 respectively through the gas flow control valve 10; the outer mixed pipe section gas injection control valve 41 is connected to the transparent gas injection pipe section 37; the cylindrical section gas injection master valve 12 is connected to the cylindrical section first zone gas injection valve 13, the cylindrical section second zone gas injection valve 14 and the cylindrical section third zone gas injection valve 15; the large cone section gas injection master valve 16 is connected to the large cone section first zone gas injection valve 17, the large cone section second zone gas injection valve 18 and the large cone section third zone gas injection valve 19; The gas valve 18 is connected to the gas injection valve 19 of the third zone of the large cone section; the main gas injection valve 20 of the small cone section is connected to the gas injection valve 21 of the first zone of the small cone section, the gas injection valve 22 of the second zone of the small cone section and the gas injection valve 23 of the third zone of the small cone section; the main gas injection valve 24 of the tail pipe section is connected to the gas injection valve 25 of the first zone of the tail pipe section, the gas injection valve 26 of the second zone of the tail pipe section and the gas injection valve 27 of the third zone of the tail pipe section; the main gas injection valve 28 of the inner pipe is connected to the gas injection valve 29 of the first zone of the inner pipe, the gas injection valve 30 of the second zone of the inner pipe and the gas injection valve 31 of the third zone of the inner pipe; the outlet valve 6 is connected to the transparent gas injection pipe section 37 through the pump 7 and the connecting flange 8a.

[0038] The gas injection module is connected to the flotation-cyclone separator 44 through micropores, and different micropore diameters are divided into zones. The micropore diameter in zone a is the largest, the micropore diameter in zone b is at the median, and the micropore diameter in zone c is the smallest. The zones are divided into a cylindrical section 32, a large cone section 33, a small cone section 34 and a tail pipe section 35 according to different pipe sections. At the same time, gas injection through an inner tube 36 and gas injection through a transparent gas injection pipe section 37 are designed to realize an experiment combining flotation and cyclone.

[0039] The gas required by the gas injection module enters the compressor 11 from the compressed gas cylinder 9 through the gas flow control valve 10 and is adjusted to the required pressure. The gas can be injected at different positions for comparison: ① entering from the transparent gas injection pipe section 37 through the external mixing pipe section gas injection control valve 41 to mix with the water-in-oil particles; ② flowing from the cylindrical section gas injection main valve 12 to the cylindrical section 32 for gas injection. The first zone 32a, the second zone 32b, and the third zone 32c can be selected for gas injection. The diameters of the micropores in these three zones are different, and the gas injection of microbubbles with different diameters can be compared. The same applies to the large cone section 33, the small cone section 34 and the tail pipe section 35; ③ The gas is injected directly from the inside of the flotation-cyclone separator 44 by the main gas injection valve 28 of the inner pipe section, and the first zone 36a, the second zone 36b, and the third zone 36c can be selected for gas injection. The diameters of the micropores in these three zones are different, and the gas injection of microbubbles of different diameters can be contrasted. At the same time, by controlling the length of the inner tube extending into the flotation-cyclone separator 44, gas injection from the cylindrical section, large cone section, small cone section or tail pipe section can be selected.

[0040] The cylindrical section main gas injection valve 12, the cylindrical section zone 1 gas injection valve 13, the cylindrical section zone 2 gas injection valve 14 and the cylindrical section zone 3 gas injection valve 15 cooperate to complete the comparison of gas injection conditions under different micropore diameters of the cylindrical section.

[0041] The large cone section main gas injection valve 16, the large cone section first zone gas injection valve 17, the large cone section second zone gas injection valve 18 and the large cone section third zone gas injection valve 19 cooperate to complete the comparison of gas injection conditions under different micropore diameters of the large cone section.

[0042] The small cone section main gas injection valve 20, the small cone section zone 1 gas injection valve 21, the small cone section zone 2 gas injection valve 22 and the small cone section zone 3 gas injection valve 23 cooperate to complete the comparison of gas injection conditions under different micropore diameters of the small cone section.

[0043] The tail pipe section gas injection main valve 24, tail pipe section zone 1 gas injection valve 25, tail pipe section zone 2 gas injection valve 26 and tail pipe section zone 3 gas injection valve 27 cooperate to complete the comparison of gas injection conditions under different micropore diameters of the tail pipe section.

[0044] The inner tube main gas injection valve 28, the inner tube zone 1 gas injection valve 29, the inner tube zone 2 gas injection valve 30 and the inner tube zone 3 gas injection valve 31 cooperate to complete the comparison of gas injection conditions under different micropore diameters of the inner tube.

[0045] The separation module comprises: a cyclone separator 40 , a separation gas phase outlet valve 39 , a circulating oil inlet valve 42 , an air flotation-cyclone separator 44 and a separation gas storage tank 45 .

[0046] The flotation-cyclone separator 44 is connected to the cyclone separator 40 through the separator inlet valve 38, the cyclone separator 40 is connected to the separation gas storage tank 45 through the separation gas phase outlet valve 39, the cyclone separator 40 is connected to the oil-water mixer 5 through the circulating oil inlet valve 42, and the flotation-cyclone separator 44 is connected to the oil-water mixer 5 through the circulating water inlet valve 43.

[0047] The mixed oil-in-water flocculent particles enter the flotation-cyclone separator 44 through the transparent air injection pipe section 37, the water that has completed the flotation-cyclone separation flows out from the lower part of the device and re-enters the oil-water mixer 5 through the circulating water inlet valve 43, the separated oil and gas enter the cyclone separator 40, the gas enters the storage tank 45 through the gas phase outlet valve 39, and the oil re-enters the oil-water mixer 5 through the circulating oil inlet valve 42, thereby realizing the multi-phase separation and recycling of the fluid.

[0048] The device of the present application can utilize the flotation cyclone coupling device and observe the internal situation through a transparent device to explore the influence of different components of gas, bubbles of different particle sizes, droplets, gas content, feed speed, gas flow, circulation pressure and other factors on the oil-water separation efficiency. The collision and adhesion of bubbles and oil droplets are studied to improve the oil-water separation efficiency and provide experimental data for the flotation-cyclone enhanced oil-water separation process.

[0049] Optionally, the oil-water mixer 5 includes: a heating device 5a, an agitator 5b, a crude oil feed port 5c, a water feed port 5d, a circulating oil feed port 5e, and a circulating water feed port 5f. The heating device 5a is located outside the oil-water mixer 5, the agitator 5b is located at the bottom of the oil-water mixer 5, the crude oil feed port 5c is connected to the crude oil storage tank 1, and the water feed port 5d is connected to the water tank 3.

[0050] After introducing a proper amount of crude oil and water through the circulating oil feed port 5e and the circulating water feed port 5f, oil-in-water type floc particles are formed under the joint action of the heating device 5a and the stirrer 5b, and then transported to the pump 7 through the outlet valve 6; the pump 7 is used to adjust the pressure of the oil-in-water emulsion fluid.

[0051] Optionally, the flotation-cyclone separator 44 is entirely made of transparent fiberglass.

[0052] The flotation-cyclone separator 44 is made of glass fiber reinforced plastics, and can be used to observe the collision between microbubbles and oil-in-water flocs, thereby analyzing relevant data, and can also be used to analyze the collision, adhesion, and desorption results of bubbles and oil droplets in real time.

[0053] The transparent gas injection pipe section 37 can observe the collision data between microbubbles and oil-in-water flocs, and can be used to analyze the collision, adhesion, and desorption results of bubbles and oil droplets in real time, as well as observe and record the flow characteristics of the oil-in-water emulsion.

[0054] Optionally, the inner tube 36 is a hollow cylinder, and the gas injection position of the inner tube can be controlled by the length of the inner tube extending into the cyclone.

[0055] The compressor 11 can adjust the gas injection pressure.

[0056] The compressed gas cylinder 9 can be replaced with a gas cylinder with different gas components to perform a comparative analysis of the flotation efficiency of different gases.

[0057] The present application can realize gas injection at different positions and under different conditions in the flotation-cyclone separator, analyze the optimal conditions of the flotation cyclone, obtain the flow characteristics of the internal flow field under the flotation cyclone conditions, and realize the recycling of the fluid.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air flotation-cyclone enhanced oil-water separation experimental analysis device, characterized in that: It includes a mixing module, a gas injection module and a separation module; The mixing module comprises: a crude oil storage tank (1), a crude oil flow control valve (2), a water tank (3), a water flow control valve (4), an oil-water mixer (5), an outlet valve (6), a pump (7), a circulating oil inlet valve (42) and a circulating water inlet valve (43); The crude oil storage tank (1) and the oil-water mixer (5) are connected via a crude oil flow control valve (2), and the water tank (3) and the oil-water mixer (5) are connected via a water flow control valve (4); The gas injection module comprises: a compressed gas cylinder (9), a gas flow control valve (10), a compressor (11), an external mixing pipe section gas injection control valve (41), a transparent gas injection pipe section (37), and a transparent pipe section connecting flange (8a). 、 (8b), (8c), cylindrical section gas injection zone 1 (32a), cylindrical section gas injection zone 2 (32b), cylindrical section gas injection zone 3 (32c), cylindrical section gas injection main valve (12), cylindrical section zone 1 gas injection valve (13), cylindrical section zone 2 gas injection valve (14), cylindrical section zone 3 gas injection valve (15), large cone section gas injection zone 1 (33a), large cone section gas injection zone 2 (33b), large cone section gas injection zone 3 (33c), large cone section gas injection main valve (16), large cone section zone 1 gas injection valve (17), large cone section zone 2 gas injection valve (18), large cone section zone 3 gas injection valve (19), small cone section gas injection zone 1 (34a), small cone section gas injection zone 2 (34b), small cone section gas injection zone 3 (3 4c), a small cone section gas injection main valve (20), a small cone section zone 1 gas injection valve (21), a small cone section zone 2 gas injection valve (22), a small cone section zone 3 gas injection valve (23), a tail pipe section zone 1 gas injection (35a), a tail pipe section zone 2 gas injection (35b), a tail pipe section zone 3 gas injection (35c), a tail pipe section gas injection main valve (24), a tail pipe section zone 1 gas injection valve (25), a tail pipe section zone 2 gas injection valve (26), a tail pipe section zone 3 gas injection valve (27), an inner tube zone 1 (36a), an inner tube zone 2 (36b), an inner tube zone 3 (36c), an inner tube gas injection main valve (28), an inner tube zone 1 gas injection valve (29), an inner tube zone 2 gas injection valve (30), and an inner tube zone 3 gas injection valve (31); The compressed gas cylinder (9) is respectively connected to the outer mixed pipe section gas injection control valve (41), the cylindrical section gas injection master valve (12), the large cone section gas injection master valve (16), the small cone section gas injection master valve (20), the tail pipe section gas injection master valve (24) and the inner pipe gas injection master valve (28) through the gas flow control valve (10); the outer mixed pipe section gas injection control valve (41) is connected to the transparent gas injection pipe section (37); the cylindrical section gas injection master valve (12) is connected to the cylindrical section first zone gas injection valve (13), the cylindrical section second zone gas injection valve (14) and the cylindrical section third zone gas injection valve (15); the large cone section gas injection master valve (16) is connected to the large cone section first zone gas injection valve (17), the large cone section second zone gas injection valve (18) and the inner pipe section third zone gas injection valve (19). The gate (18) is connected to the gas injection valve (19) of the third zone of the large cone section; the main gas injection valve (20) of the small cone section is connected to the gas injection valve (21) of the first zone of the small cone section, the gas injection valve (22) of the second zone of the small cone section, and the gas injection valve (23) of the third zone of the small cone section; the main gas injection valve (24) of the tail pipe section is connected to the gas injection valve (25) of the first zone of the tail pipe section, the gas injection valve (26) of the second zone of the tail pipe section, and the gas injection valve (27) of the third zone of the tail pipe section; the main gas injection valve (28) of the inner pipe is connected to the gas injection valve (29) of the first zone of the inner pipe section, the gas injection valve (30) of the second zone of the inner pipe section, and the gas injection valve (31) of the third zone of the inner pipe section; the outlet valve (6) is connected to the transparent gas injection pipe section (37) through the pump (7) and the connecting flange (8a); The separation module comprises: a cyclone separator (40), a separation gas phase outlet valve (39), a circulating oil inlet valve (42), an air flotation-cyclone separator (44) and a separation gas storage tank (45); The flotation-cyclone separator (44) is connected to the cyclone separator (40) via the separator inlet valve (38), the cyclone separator (40) is connected to the separation gas storage tank (45) via the separation gas phase outlet valve (39), the cyclone separator (40) is connected to the oil-water mixer (5) via the circulating oil inlet valve (42), and the flotation-cyclone separator (44) is connected to the oil-water mixer (5) via the circulating water inlet valve (43).

2. The air flotation-cyclone enhanced oil-water separation experimental analysis device according to claim 1, characterized in that: The oil-water mixer (5) comprises: a heating device (5a), an agitator (5b), a crude oil feed port (5c), a water feed port (5d), a circulating oil feed port (5e), ​​and a circulating water feed port (5f); the heating device (5a) is located outside the oil-water mixer (5); the agitator (5b) is located at the bottom of the oil-water mixer (5); the crude oil feed port (5c) is connected to a crude oil storage tank (1); and the water feed port (5d) is connected to a water tank (3).

3. The air flotation-cyclone enhanced oil-water separation experimental analysis device according to claim 1, characterized in that: The air flotation-cyclone separator (44) is entirely made of transparent glass fiber reinforced plastic.

4. The air flotation-cyclone enhanced oil-water separation experimental analysis device according to claim 1, characterized in that: The inner tube (36) is in the shape of a hollow cylinder.

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