A visual device for CO2 ocean storage experiment with switchable spraying and bubbling and its experimental method

Abstract

A visual device for CO2 ocean storage experiments that can switch between spraying and bubbling, and an experimental method thereof, belong to the field of carbon dioxide storage technology. The system mainly includes a gas-liquid system, a liquid inlet system, a visual reactor system, and a data acquisition and processing system; the visual reactor system realizes different storage modes by means of positive and reverse positions, and a CO2 adjustable liquid nozzle is installed on the reactor body and the reactor body is placed upright. After injecting a seawater simulation solution and controlling the temperature and pressure, liquid carbon dioxide is injected into the water from above at a high flow rate through a booster pump and the droplet sedimentation state is observed. The droplet size is controlled by adjusting the injection flow rate by adjusting the nozzle. When switching microbubbles, the microbubble gas nozzle is replaced and the reactor body is inverted, and gaseous carbon dioxide is injected into the water from the bottom and the rising trend and fate of the bubbles are observed. The present invention can freely switch between two hydrate formation modes to perform larger-scale laboratory ocean storage simulations, and can realize all-round observation of the migration mode of CO2 droplets and bubbles.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon dioxide storage, and relates to a visual device for CO2 ocean storage experiment capable of switching between spraying and bubbling, and an experimental method thereof. Background Art

[0002] CO2 storage technology is an effective way to reduce greenhouse gas emissions and mitigate the greenhouse effect. Compared with geological storage, marine storage has a wider coverage area, a large storage volume, and stable storage, and has huge storage potential. Conventional marine storage methods include the hydrate method, the liquid carbon lake method, and the seawater dissolution method. The hydrate method requires the injection of carbon dioxide into the hydrate stability zone in the sediment layer based on an offshore drilling platform to generate relatively stable hydrates for permanent storage. However, the marine geological conditions are relatively complex, the crust is thin, the terrain is undulating, and the physical properties of the overlying sedimentary layers vary significantly. It is difficult to ensure the stability of the injection process, and it is still in the research and development stage. Therefore, it is necessary to develop two other storage methods.

[0003] The liquid carbon lake method involves injecting captured CO2 into the ocean in liquid form. When injected at depths greater than 3000 m, gravity forces the CO2 droplets, which are denser than seawater, to sink to low-lying areas at the ocean bottom, forming a CO2 lake. A hydrate film forms on the surface of the lake where it contacts the seawater, thus ensuring its stability. The seawater dissolution method involves injecting gaseous CO2 directly into shallow seawater. As the bubbles rise, hydrates gradually form and settle or dissolve directly in the seawater. However, both methods are currently in their infancy, and laboratory research remains limited to small-scale experiments on individual droplets or bubbles, lacking the phenomena and data necessary for field experiments. Furthermore, obtaining intuitive images of the storage effect under field experimental conditions is costly, difficult to install, and often lacks a "black box" approach. Therefore, scaling up laboratory devices to more realistically simulate field ocean storage conditions and obtain simulated data that closely resembles field conditions is crucial. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a CO2 ocean storage experimental method and visualization device with switchable spraying and bubbling. By visualizing the kettle body, the intuitive morphology of droplets and bubbles migrating over a large vertical distance is obtained, and the storage mode is switched by a flippable kettle body and a nozzle with adjustable droplet size. The influence of different injection parameters on the behavior of droplets and bubbles is studied, which realizes the expansion of the laboratory research scale and helps to provide empirical data and images for the application of field storage methods.

[0005] The technical solution of the present invention:

[0006] A visual device for CO2 ocean storage experiments with switchable spraying and bubbling, the system includes a gas liquefaction system, a liquid system, a visual reactor system, and a data acquisition and processing system;

[0007] The gas-liquid system uses a CO2 gas cylinder connected to one end of the nozzle of the visual reactor through a gas supply valve, a constant temperature compression pump, and an air injection valve;

[0008] The liquid system uses a solution tank connected to the other end of the visual reactor via a liquid inlet valve, a temperature-controlled compression pump, and a liquid supply valve;

[0009] The visual reactor system comprises end covers at both ends of the visual reactor, and a sealing pull rod is provided between the upper and lower end covers; the visual reactor is placed in a transparent temperature-controlled water tank, and the transparent temperature-controlled water tank is connected to a constant temperature water bath;

[0010] The visual reactor has two experimental modes: spray sealing mode and bubbling sealing mode;

[0011] In the spray sealing mode, the visual reactor is in the upright position, an adjustable liquid nozzle is provided on the top end cover, and the bottom of the nozzle channel of the adjustable liquid nozzle is inserted into the body of the visual reactor; the adjustable liquid nozzle is provided with a nozzle channel, an inner layer nozzle and an outer layer nozzle in sequence from the inside to the outside, and a droplet expansion opening is provided at the bottom of the inner layer nozzle;

[0012] In the bubbling sealing mode, the reactor is viewed as being in the inverted position, and a micro-bubble porous plate nozzle is provided on the bottom end cover, which includes a nozzle seat and a nozzle head that are threadedly connected, a nozzle cavity in the nozzle seat communicating with a conical cavity in the nozzle head, and a microporous channel is provided on the outside of the conical cavity;

[0013] In the data acquisition and processing system, a data acquisition computer is electrically connected to a flow meter, a pressure sensor, a temperature sensor, and a camera. The data acquisition and processing system captures reaction images of CO2 droplets or bubbles at different depths through cameras distributed at three locations on the kettle body, and observes the jet or liquid flow rate in real time through the flow meter, controls the initial ambient temperature through the temperature sensor and the pressure sensor, and obtains the dynamic temperature and pressure changes of the reaction during the experiment.

[0014] The inner layer nozzle and the outer layer nozzle in the adjustable liquid nozzle cooperate with each other through the inner layer nozzle external thread and the outer layer nozzle internal thread, driving the inner layer nozzle to move up and down; when the inner layer nozzle moves to the top end, the nozzle channel passes through the droplet expansion opening, and the diameter of the droplet formed is the inner diameter of the nozzle channel; when the inner layer nozzle moves to the bottom end, the bottom of the nozzle channel is connected to the droplet expansion opening.

[0015] An air jet valve is arranged at one end of the visual reactor, and a pressure sensor and a temperature sensor are arranged at the other end.

[0016] An experimental method for a visual device for a CO2 ocean storage experiment capable of switching between spraying and bubbling, the method comprising a spray storage experimental method and a bubbling storage experimental method.

[0017] The spray sealing experimental method is:

[0018] a. Keep the visual reactor in the correct position and install an adjustable liquid nozzle on the top cover of the visual reactor;

[0019] b. Water injection - pressurization and temperature control: First, add water bath liquid to the transparent temperature-controlled water tank and turn on the constant temperature water bath to keep the temperature constant. Then, open the liquid supply valve and the exhaust valve, draw the seawater simulation solution from the solution tank into the constant temperature compression pump, and then inject it into the visual reactor body. After the exhaust valve is closed after water comes out; control the compression pump to adjust the pressure to a constant level, maintain this state until the temperature and pressure are stable, and then close the liquid supply valve;

[0020] c. Liquefaction-Spray: Close the jet valve, open the air supply valve, control the constant temperature compression pump to be constant at the carbon dioxide liquefaction temperature, and inhale carbon dioxide gas from the CO2 cylinder. Close the air supply valve, control the constant temperature compression pump to be constant at the liquefaction pressure to obtain liquefied carbon dioxide, then open the jet valve, and control the constant temperature compression pump to spray liquid carbon dioxide into the reactor body by observing the flow meter reading. Observe the droplet sedimentation characteristics at different depths and capture images with a camera installed on the side of the reactor body.

[0021] The bubbling sealing experimental method is:

[0022] a. Keep the visual reactor in reverse position and install a micro-bubble porous plate nozzle on the end cover of the bottom plate of the reactor body;

[0023] b. Water injection - pressurization and temperature control: First, add water bath liquid to the transparent temperature-controlled water tank, and open the constant temperature water bath to adjust the temperature to be constant. Then, open the liquid supply valve and the liquid discharge valve, suck the seawater simulation solution from the solution tank into the compression pump, and then inject it into the visual reactor body. After the liquid discharge valve is closed, control the compression pump to adjust the pressure to be constant, maintain this state until the temperature and pressure are stable, and then close the liquid supply valve.

[0024] c. Microbubble generation and injection: Close the jet valve, open the gas supply valve, use a constant temperature compression pump to inhale carbon dioxide gas from the gas cylinder, close the gas supply valve, use a constant temperature compression pump to compress the gas in the pump to reach the experimental pressure, then open the jet valve, and control the constant temperature compression pump to supply gas to the porous body by observing the flow meter reading to generate microbubbles and inject bubbles into the reactor body.

[0025] The effects and benefits of the present invention are:

[0026] (1) This device can realize the spraying of liquid carbon dioxide under high pressure. It is first liquefied in the compression pump and then sprayed into the simulated seawater through the nozzle to disperse the carbon dioxide droplets and form a water-in-liquid pattern, which increases the possibility of forming hydrate shell coating or dissolution, and helps the sedimentation of carbon dioxide droplets.

[0027] (2) This device can switch between liquid carbon dioxide spray experiment and bubbling dissolution experiment by flipping the kettle body, achieving dual-purpose. Both nozzles are connected to the bottom cover using internal threads, which makes replacement and disassembly quick and convenient for disassembly and cleaning at any time.

[0028] (3) This device can adjust the size of carbon dioxide spray droplets without disassembling the device by adjusting the nozzle and controlling the flow rate: by adjusting the knob on the top of the nozzle to switch between the conical nozzle and the cylindrical nozzle, droplets of different sizes can be formed; by controlling the low flow rate to reduce the droplet breakup and thus form larger droplets, by using a high flow rate to make the tail end of the jet unstable, the liquid flow is broken into small droplets, forming different droplet sedimentation patterns, which helps to explore the critical droplet size and injection parameters that are conducive to sedimentation under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a diagram of the liquid carbon dioxide spray mode device.

[0030] Figure 2 This is a diagram of the microbubble injection mode device.

[0031] Figure 3 It is a schematic diagram of the end cover at one end of the visual reactor body where the nozzle is installed.

[0032] Figure 4 It is a schematic diagram of the end cover at one end of the visual reactor body connection pipeline.

[0033] Figure 5 is a cross-sectional view of an adjustable nozzle.

[0034] Figure 6 This is a cross-sectional view of a microbubble porous plate.

[0035] Figure: 1, CO2 cylinder, 2, gas supply valve, 3, constant temperature compression pump, 4, constant temperature water bath, 5, camera, 6, transparent temperature-controlled water tank, 7, sealing rod, 8, visual reactor, 9, adjustable liquid nozzle, 9a, outer nozzle, 9b, outer nozzle internal thread, 9c, inner nozzle, 9d, inner nozzle external thread, 9e, inner sealing ring, 9f, outer sealing ring, 9g, nozzle channel, 9h, droplet expansion, 10, flow rate 11. Data acquisition computer; 12. Liquid discharge valve; 13. Pressure sensor; 14. Temperature sensor; 15. Temperature-controlled compression pump; 16. Solution tank; 17. End cover; 18. Fixing nut; 19. Microbubble porous plate nozzle; 19a. Nozzle head; 19b. Conical cavity; 19c. Microporous channel; 19d. Nozzle seat; 19e. Nozzle cavity; 20. Exhaust valve; 21. Injection valve; 22. Liquid supply valve; 23. Liquid inlet valve. Implementation Method

[0036] The specific embodiments of the present invention are described in detail below in conjunction with the technical solutions and accompanying drawings:

[0037] Figures 1 to 6 A CO2 ocean storage experimental method and visualization device with switchable spraying and bubbling is shown. The system includes a gas-liquid system, a liquid inlet system, a visualization reactor system, and a data acquisition and processing system:

[0038] The gas-liquid system includes a CO2 gas cylinder 1, a gas supply valve 2, a constant temperature compression pump 3 and an injection valve 21. The gas supply system directly provides gas of a certain temperature and pressure into the simulated seawater solution of the visible reactor body, or converts carbon dioxide into liquid at low temperature and high pressure and then injects it into the simulated seawater solution.

[0039] The liquid inlet system includes a solution tank 16, a liquid inlet valve 23, a temperature-controlled compression pump 15 and a liquid supply valve 22. The liquid inlet system provides seawater simulation solution to the visual reactor body and controls the initial pressure conditions of the reactor.

[0040] The visualization reactor system includes a constant-temperature water bath 4, a transparent acrylic temperature-controlled water tank 6, sealing rods 7, retaining nuts 18, a fully visible glass tube 8, upper and lower end caps 17, an adjustable liquid nozzle 9, a microbubble porous plate nozzle 19, an exhaust valve 20, and a drain valve 12. The visualization reactor 8 can be positioned forward and reversed to switch between two experimental modes. Furthermore, during the liquid CO2 spraying phase, the droplet size can be controlled by adjusting the adjustable liquid nozzle 9 and the injection flow rate. The visualization reactor 8 is sealed by sealing rings on the upper and lower end caps, and three sealing rods 7 tighten to prevent longitudinal movement of the end caps caused by internal pressure. The nozzle's depth within the reactor can be fine-tuned by screwing the end cap in or out.

[0041] The adjustable liquid nozzle 9 on the top cover can be left in its original position, spraying liquid carbon dioxide into the water through the nozzle channel 9g with a wide spray angle and the droplet expansion 9h, producing larger droplets. Alternatively, by tightening the adjusting bolt, the nozzle channel 9g with a narrower inner diameter can be protruded from the inside, spraying carbon dioxide from the inside, producing smaller droplets. The transparent acrylic temperature-controlled water tank 6, used to control the temperature of the experimental kettle, is sprayed with an anti-fog agent to prevent water mist caused by low temperatures.

[0042] Figure 5 In the adjustable liquid nozzle 9, the inner nozzle 9c and the outer nozzle 9a cooperate with the inner nozzle outer thread 9d and the outer nozzle inner thread 9b to drive the inner nozzle 9c to move up and down; when the inner nozzle 9c moves to the top, the nozzle channel 9g passes through the droplet expansion 9h, and the diameter of the droplet formed is the inner diameter of the nozzle channel 9g; when the inner nozzle 9c moves to the bottom, the bottom of the nozzle channel 9g is connected to the droplet expansion 9h (such as Figure 5 (as shown in the left figure in the middle).

[0043] The inner layer nozzle 9c and the outer layer nozzle 9a in the adjustable liquid nozzle 9 cooperate with the inner layer nozzle external thread 9d and the outer layer nozzle internal thread 9b to drive the inner layer nozzle 9c to move up and down; when the inner layer nozzle 9c moves to the top, the nozzle channel 9g passes through the droplet expansion 9h, and the diameter of the droplet formed is the inner diameter of the nozzle channel 9g; when the inner layer nozzle 9c moves to the bottom, the bottom of the nozzle channel 9g is connected to the droplet expansion 9h (such as Figure 5 (as shown in the figure on the right).

[0044] like Figure 6 As shown, the microbubble porous plate nozzle 19 includes a nozzle seat 19d that is threadedly connected to the nozzle head 19a, the nozzle cavity 19e in the nozzle seat 19d is connected to the conical cavity 19b in the nozzle head 19a, and a microporous channel 19c is provided on the outside of the conical cavity 19b; after the gas passes through the microbubble porous plate nozzle 19, microbubbles are generated in the reactor body.

[0045] The data acquisition and processing system includes a camera 5, a flow meter 10, a temperature sensor 14, a pressure sensor 13, and a data acquisition computer 11. High-speed cameras located at three locations within the reactor capture images of CO2 droplets and bubbles at different depths. The system also uses the flow meter 10 to monitor the jet or liquid flow rate in real time, controls the initial ambient temperature with the temperature sensor 14 and pressure sensor 13, and captures dynamic temperature and pressure changes during the experiment. The drain valve 12 is directly connected to the reactor and does not share the same line with the supply valve 22.

[0046] The installed pipes are equipped with quick-release joints for easy disassembly and assembly, and the mode can be switched by manually turning the kettle upside down. Figure 1 As shown, the liquid carbon dioxide deposition experiment was carried out using the spray storage experimental method:

[0047] 1 Keep the kettle in the correct position and install an adjustable liquid nozzle 9 on the top of the kettle.

[0048] 2 Water injection - pressurization and temperature control: First, add water bath liquid to the temperature-controlled water tank 6, and open the constant temperature water bath 4 to control the temperature to be constant. Then, open the liquid supply valve 22 and the exhaust valve 20, and suck the seawater simulation solution from the solution tank 16 into the compression pump 3, and then inject it into the reactor body. After the exhaust valve 20 has discharged water, close it, control the compression pump 3 to adjust the pressure to a constant level, maintain this state until the temperature and pressure are stable, and then close the liquid supply valve 22.

[0049] 3. Liquefaction - Spray: Close the jet valve 21, open the air supply valve 2, control the thermostatic compressor 3 to maintain a constant temperature at the CO2 liquefaction temperature, and draw CO2 gas from the gas cylinder 1. Close the air supply valve 2 and control the thermostatic compressor 3 to maintain a constant liquefaction pressure to produce liquefied CO2. Next, open the jet valve 21 and, by observing the flowmeter reading, control the thermostatic compressor 3 to spray liquid CO2 into the reactor. Observe the droplet settling characteristics at different depths and capture images using a high-speed camera attached to the side of the reactor. After completing the control group, tighten the adjustment screw 24 on the adjustable liquid nozzle 9 and adjust the injection flow rate of the thermostatic compressor 3. Repeat the above experimental steps after changing the droplet size.

[0050] like Figure 2 As shown, the bubbling storage experimental method was used to conduct the carbon dioxide microbubble precipitation and dissolution experiment:

[0051] 1. Keep the kettle in reverse position and install a micro-bubble porous plate nozzle 19 at the bottom of the kettle.

[0052] 2 Water injection - pressurization and temperature control: First, add water bath liquid to the temperature-controlled water tank 6, and open the constant temperature water bath 4 to control the temperature to be constant. Then, open the liquid supply valve 22 and the exhaust valve 12, and suck the seawater simulation solution from the solution tank 16 into the compression pump 3, and then inject it into the reactor body. After the exhaust valve 12 has discharged water, close it, control the compression pump 3 to adjust the pressure to a constant level, maintain this state until the temperature and pressure are stable, and then close the liquid supply valve 22.

[0053] 3 Microbubble generation and injection: Close the jet valve 21, open the gas supply valve 2, use the constant temperature compression pump 3 to inhale carbon dioxide gas from the gas cylinder 1, close the gas supply valve 2, use the constant temperature compression pump 3 to compress the gas in the pump to reach the experimental pressure, then open the jet valve 21, and control the constant temperature compression pump 3 to supply gas to the porous body by observing the flow meter reading to generate microbubbles and inject bubbles into the reactor body.

[0054] Application Examples

[0055] A seawater simulation solution of 5.2 g / L sodium chloride, 4.09 g / L magnesium chloride, 1.16 g / L sodium sulfate, 1.16 g / L calcium chloride, 24.53 g / L potassium chloride, and 24.53 g / L sodium bicarbonate was prepared and allowed to stand. After complete sedimentation, the upper clear solution was poured into the reactor. The temperature and pressure conditions were controlled at 5 MPa and 1°C. At a temperature of 1°C, carbon dioxide gas was pressurized to 5 MPa in the compression pump 3 and maintained for 1 hour to fully liquefy it. Then, the valve was opened and carbon dioxide was injected into the visible reactor body through the nozzle channel 9g and the nozzle pattern of droplet expansion for 9h at a constant flow rate of 10 ml / min. It was observed that the droplets quickly split into smaller droplets, and some small droplets rose. In this state, the droplet sedimentation effect was not obvious, and the phenomenon of hydrate shell coating was not observed, indicating that the temperature had not reached a sufficiently low temperature to form high-density droplets. At the same time, the instability of the droplet interface led to large-scale droplet breakup. Low flow rate and large droplets should be more conducive to sedimentation.

Claims

1. A method for CO2 ocean storage experiment with switchable spraying and bubbling, characterized in that: The experimental device used in this method includes a gas liquefaction system, a liquid system, a visual reactor system and a data acquisition and processing system. The gas liquefaction system uses a CO2 gas cylinder (1) connected to one end of a visible reactor (8) provided with a nozzle via a gas supply valve (2), a constant temperature compression pump (3), and an air injection valve (21); The liquid system is connected to the other end of the visual reactor (8) through a solution tank (16) via a liquid inlet valve (23), a temperature-controlled compression pump (15), and a liquid supply valve; In the visual reactor system, end covers (17) are provided at both ends of the visual reactor (8), and a sealing pull rod (7) is provided between the upper and lower end covers; the visual reactor (8) is placed in a transparent temperature-controlled water tank (6), and the transparent temperature-controlled water tank (6) is connected to a constant temperature water bath (4); The visual reactor (8) has two experimental modes: spray sealing mode and bubbling sealing mode; In the spray sealing mode, the visual reactor (8) is in the upright position, an adjustable liquid nozzle (9) is provided on the top end cover (17), and the bottom of the nozzle channel (9g) of the adjustable liquid nozzle (9) is inserted into the body of the visual reactor (8); the adjustable liquid nozzle (9) is provided with a nozzle channel (9g), an inner layer nozzle (9c) and an outer layer nozzle (9a) in sequence from the inside to the outside, and a droplet expansion opening (9h) is provided at the bottom of the inner layer nozzle (9c); In the bubbling sealing mode, the reactor (8) is in the reverse position, and a microbubble porous plate nozzle (19) is provided on the bottom end cover (17), which includes a nozzle seat (19d) and a nozzle head (19a) threadedly connected, a nozzle cavity (19e) in the nozzle seat (19d) communicating with a conical cavity (19b) in the nozzle head (19a), and a microporous channel (19c) is provided on the outside of the conical cavity (19b); In the data acquisition and processing system, a data acquisition computer (11) is electrically connected to a flow meter (10), a pressure sensor (13), a temperature sensor (14), and a camera (5). The data acquisition and processing system captures reaction images of CO2 droplets or bubbles at different depths through cameras (5) distributed at three locations on the kettle body, and observes the jet or liquid flow rate in real time through the flow meter (10), controls the initial ambient temperature through the temperature sensor (14) and the pressure sensor (13), and obtains the dynamic temperature and pressure changes of the reaction during the experiment.

2. The method for a CO2 ocean storage experiment with switchable spraying and bubbling according to claim 1, characterized in that: The inner layer nozzle (9c) and the outer layer nozzle (9a) in the adjustable liquid nozzle (9) cooperate with each other through the inner layer nozzle external thread (9d) and the outer layer nozzle internal thread (9b), thereby driving the inner layer nozzle (9c) to move up and down; when the inner layer nozzle (9c) moves to the top end, the nozzle channel (9g) passes through the droplet expansion opening (9h), and the diameter of the droplet formed is the inner diameter of the nozzle channel (9g); when the inner layer nozzle (9c) moves to the bottom end, the bottom of the nozzle channel (9g) is connected to the droplet expansion opening (9h).

3. The method for a CO2 ocean storage experiment with switchable spraying and bubbling according to claim 2, characterized in that: An exhaust valve (20) is provided at one end of the visual reactor (8), and a pressure sensor (13) and a temperature sensor (14) are provided at the other end.

4. The method for a CO2 ocean storage experiment with switchable spraying and bubbling according to claim 3, characterized in that: The method includes a spray sealing experimental method and a bubble sealing experimental method.

5. The method for a CO2 ocean storage experiment with switchable spraying and bubbling according to claim 4, characterized in that: The spray sealing experimental method is: a. Keep the visual reactor (8) in the correct position and install an adjustable liquid nozzle on the top end cover of the visual reactor (8); b. Water injection - pressurization and temperature control: first, add water bath liquid to the transparent temperature-controlled water tank (6), and open the constant temperature water bath (4) to adjust the temperature to be constant. Then, open the liquid supply valve (22) and the exhaust valve (20), and draw the seawater simulation solution from the solution tank (16) into the constant temperature compression pump (3), and then inject it into the visual reactor body until the exhaust valve (20) discharges water and then closes it; control the constant temperature compression pump (3) to adjust the pressure to be constant, maintain this state until the temperature and pressure are stable, and then close the liquid supply valve (22); c. Liquefaction-spray: Close the jet valve (21), open the air supply valve (2), control the constant temperature compression pump (3) to be constant at the carbon dioxide liquefaction temperature, and inhale carbon dioxide gas from the CO2 cylinder (1), close the air supply valve (2), control the constant temperature compression pump (3) to be constant at the liquefaction pressure to obtain liquefied carbon dioxide, then open the jet valve (21), and control the constant temperature compression pump (3) to spray liquid carbon dioxide into the reactor body by observing the reading of the flow meter (10), observe the droplet sedimentation characteristics at different depths and capture images using a camera installed on the side of the reactor body.

6. The method for a CO2 ocean storage experiment with switchable spraying and bubbling according to claim 4, characterized in that: The bubbling sealing experimental method is: a. Keep the visual reactor (8) in reverse position and install a micro-bubble porous plate nozzle (19) on the bottom plate end cover of the reactor body; b. Water injection - pressurization and temperature control: first, add water bath liquid to the transparent temperature-controlled water tank (6), and open the constant temperature water bath (4) to adjust the temperature to be constant. Then, open the liquid supply valve (22) and the liquid discharge valve (12), and suck the seawater simulation solution from the solution tank (16) into the constant temperature compression pump (3), and then inject it into the visual reactor body until the liquid discharge valve (12) discharges water and then closes it; control the constant temperature compression pump (3) to adjust the pressure to be constant, maintain this state until the temperature and pressure are stable, and then close the liquid supply valve (22); c. Microbubble generation and injection: Close the jet valve (21), open the gas supply valve (2), use the constant temperature compression pump (3) to inhale carbon dioxide gas from the gas cylinder (1), close the gas supply valve (2), use the constant temperature compression pump (3) to reach the experimental pressure, then open the jet valve (21), and control the constant temperature compression pump (3) to supply gas to the porous body by observing the flow meter reading to generate microbubbles and inject bubbles into the reactor body.

Images