Simulation experiment device for measuring CO2 solubility

Abstract

The utility model discloses a simulation experiment device for measuring the solubility of CO2, which comprises a thermal insulation frame, a constant-temperature box fixedly arranged on the inner bottom wall of the thermal insulation frame, a liquid storage tank and a gas storage tank fixedly arranged on the inner bottom wall of the constant-temperature box, a high-pressure reaction kettle fixedly arranged on the inner bottom wall of the constant-temperature box, and three electric heating resistance wires fixedly arranged on the outer surface of the constant-temperature box, a first manual metering pump is fixedly installed on the back face of the heat insulation frame, the output end of the first manual metering pump fixedly communicates with a three-way pipe, the end, away from the first manual metering pump, of the three-way pipe sequentially penetrates through the heat insulation frame and the constant-temperature box and fixedly communicates with the bottom face of the liquid storage tank and the bottom face of the gas storage tank, and first pistons are slidably connected to the inner walls of the liquid storage tank and the gas storage tank correspondingly. And the upper surfaces of the liquid storage tank and the gas storage tank are fixedly communicated with conveying pipes. According to the utility model, heat provided by the electric heating resistance wire can heat the interior of the constant temperature box, so that when a simulation experiment is carried out on the solubility of carbon dioxide, measurement can be conveniently carried out in different temperature states.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring CO2 solubility, in particular to a simulation experimental device for measuring CO2 solubility. Background Art

[0002] With the continuous development of social economy, global carbon emissions have shown an increasing trend year by year. In response to the current greenhouse effect and dual carbon policy, geological storage of carbon dioxide is currently a major method, and the solubility of carbon dioxide in formation water is an important factor affecting the safety and volume of carbon dioxide storage.

[0003] The existing simulation experimental device for measuring the solubility of carbon dioxide is not convenient for measuring the solubility of carbon dioxide at different temperatures, different mineralizations and different pressures when conducting simulation experiments on the solubility of carbon dioxide, and thus it is not convenient to understand the effects of temperature, mineralization and pressure on the dissolution of carbon dioxide, making it less practical. Therefore, those skilled in the art provide a simulation experimental device for measuring the solubility of CO2 to solve the problems raised in the above background technology. Utility Model Content

[0004] In view of this, it is necessary to provide a simulation experimental device for measuring the solubility of CO2, so as to solve the problem that it is inconvenient to measure the solubility of carbon dioxide at different temperatures, different mineralizations and different pressures when conducting simulation experiments on the solubility of carbon dioxide, and thus it is inconvenient to understand the effects of temperature, mineralization and pressure on the dissolution of carbon dioxide, resulting in low practicality.

[0005] According to one aspect of the utility model, a simulation experimental device for determining CO solubility is provided, comprising: a temperature-insulating frame, a thermostatic box is fixedly installed on the inner bottom wall of the temperature-insulating frame, a liquid storage tank and a gas storage tank are fixedly installed on the inner bottom wall of the thermostatic box, a high-pressure reactor is fixedly installed on the inner bottom wall of the thermostatic box, three electric thermal resistance wires are fixedly installed on the outer surface of the thermostatic box, a first manual metering pump is fixedly installed on the back of the temperature-insulating frame, an output end of the first manual metering pump is fixedly connected with a three-way pipe, an end of the three-way pipe away from the first manual metering pump passes through the temperature-insulating frame and the thermostatic box in sequence and is fixedly connected with the bottom surfaces of the liquid storage tank and the gas storage tank, the inner walls of the liquid storage tank and the gas storage tank are both slidably connected with a first piston, and the upper surfaces of the liquid storage tank and the gas storage tank are both fixedly connected with a delivery pipe , one end of the delivery pipe away from the liquid storage tank and the gas storage tank is fixedly connected to the upper surface of the high-pressure reactor, the outer surfaces of the three-way pipe and the two delivery pipes are fixedly installed with solenoid valves, a first automatic metering pump is fixedly installed on the front of the insulation rack, the input end of the first automatic metering pump sequentially penetrates the insulation rack and the constant temperature box and is fixedly connected to the bottom surface of the high-pressure reactor, an air-water separator is fixedly installed on the upper surface of the insulation rack, the output end of the first automatic metering pump penetrates the air-water separator and extends to the interior of the air-water separator, a second automatic metering pump is fixedly installed on the right side of the insulation rack, the input end of the second automatic metering pump sequentially penetrates the insulation rack and the constant temperature box and is fixedly connected to the upper surface of the high-pressure reactor, and a pressure gauge is fixedly installed on the upper surface of the high-pressure reactor.

[0006] According to some embodiments, a stepper motor is fixedly mounted on the bottom surface of the high-pressure reactor, and an output end of the stepper motor power passes through the high-pressure reactor and is fixedly mounted with a stirring blade.

[0007] According to some embodiments, the upper surface of the liquid storage tank is fixedly connected to a liquid inlet pipe, and the top end of the liquid inlet pipe is threadedly connected to a sealing cover.

[0008] According to some embodiments, an air intake pipe is fixedly mounted on the upper surface of the air storage tank, and a one-way valve is fixedly mounted on the outer surface of the air intake pipe.

[0009] According to some embodiments, a nitrogen tank is fixedly mounted on the front side of the temperature-isolating rack, and a second piston is slidably connected to the inner wall of the nitrogen tank.

[0010] According to some embodiments, a second manual metering pump is fixedly installed on the front side of the temperature-isolating rack, and an input end of the second manual metering pump is fixedly connected to the bottom surface of the nitrogen tank.

[0011] According to some embodiments, the upper surface of the nitrogen tank is fixedly connected to a gas supply pipe, and a back-pressure valve is fixedly installed on the outer surface of the gas supply pipe.

[0012] According to some embodiments, a switch door is movably hinged on the left side of the temperature insulation rack, and a pull block is fixedly installed on the left side of the switch door.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by providing a liquid storage tank, formation water with different mineralization degrees can be placed, and a gas storage tank can store carbon dioxide. The suction force provided by the first manual metering pump can directly transport the outside air to the three-way pipe, so that the first piston can squeeze the formation water and carbon dioxide into the delivery pipe. By opening the solenoid valve, the formation water and carbon dioxide can be transported to the high-pressure reactor. The pressure inside the high-pressure reactor can be detected by a pressure gauge. When the pressure reaches the required pressure value, the carbon dioxide delivery is stopped. The heat provided by the electric thermal resistance wire is used to The first automatic metering pump can increase the temperature inside the constant temperature box, the second automatic metering pump can pump out the excess carbon dioxide in the upper layer after the formation water is saturated with carbon dioxide, and the first automatic metering pump can pump the formation water saturated with carbon dioxide into the gas-water separator, making the separation of formation water and dissolved carbon dioxide more convenient and time-saving, thereby improving the efficiency of the experiment and making it convenient to measure the solubility of carbon dioxide at different temperatures, different mineralizations and different pressures when conducting simulation experiments on the solubility of carbon dioxide, thereby facilitating understanding the effects of temperature, mineralization and pressure on the dissolution of carbon dioxide, thereby achieving a more practical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a temperature-insulating frame of a simulation experimental device for measuring CO2 solubility provided by the utility model;

[0016] Figure 2 A schematic diagram of the three-dimensional structure of an electric heating resistance wire of a simulation experimental device for measuring CO2 solubility provided by the utility model;

[0017] Figure 3 A schematic diagram of a cutaway stereoscopic structure of a thermostatic box of a simulation experimental device for measuring CO2 solubility provided by the utility model;

[0018] Figure 4 A schematic diagram of the left-side cutaway structure of a liquid storage tank of a simulation experimental device for measuring CO2 solubility provided by the utility model;

[0019] Figure 5The utility model is a schematic diagram of the right-side stereoscopic structure of a second automatic metering pump of a simulation experimental device for measuring CO2 solubility.

[0020] In the figure: 1. temperature insulation rack; 2. liquid storage tank; 3. gas storage tank; 4. high-pressure reactor; 5. first manual metering pump; 6. three-way pipe; 7. delivery pipe; 8. solenoid valve; 9. first piston; 10. electric heating wire; 11. first automatic metering pump; 12. gas-water separator; 13. pressure gauge; 14. stepping motor; 15. stirring blade; 16. liquid inlet pipe; 17. sealing cover; 18. air inlet pipe; 19. one-way valve; 20. nitrogen tank; 21. second piston; 22. second manual metering pump; 23. air delivery pipe; 24. back pressure valve; 25. second automatic metering pump; 26. switch door; 27. pull block; 28. constant temperature box. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] See also Figures 1 to 5 The utility model provides a simulation experimental device for determining the solubility of CO2, including a temperature-insulating frame 1, a thermostatic box 28 is fixedly installed on the inner bottom wall of the temperature-insulating frame 1, a liquid storage tank 2 and a gas storage tank 3 are fixedly installed on the inner bottom wall of the thermostatic box 28, a high-pressure reactor 4 is fixedly installed on the inner bottom wall of the thermostatic box 28, three electric heat resistance wires 10 are fixedly installed on the outer surface of the thermostatic box 28, a first manual metering pump 5 is fixedly installed on the back of the temperature-insulating frame 1, an output end of the first manual metering pump 5 is fixedly connected with a three-way pipe 6, an end of the three-way pipe 6 away from the first manual metering pump 5 sequentially penetrates the temperature-insulating frame 1 and the thermostatic box 28 and is fixedly connected with the bottom surfaces of the liquid storage tank 2 and the gas storage tank 3, the inner walls of the liquid storage tank 2 and the gas storage tank 3 are both slidably connected with a first piston 9, the upper surfaces of the liquid storage tank 2 and the gas storage tank 3 are both fixedly connected with a delivery pipe 7, and the delivery pipe 7 is far away from the first manual metering pump 5. One end of the liquid storage tank 2 and the gas storage tank 3 are fixedly connected to the upper surface of the high-pressure reactor 4, and the outer surfaces of the three-way pipe 6 and the two delivery pipes 7 are fixedly installed with solenoid valves 8. A first automatic metering pump 11 is fixedly installed on the front of the insulation rack 1, and the input end of the first automatic metering pump 11 passes through the insulation rack 1 and the constant temperature box 28 in sequence and is fixedly connected to the bottom surface of the high-pressure reactor 4. A gas-water separator 12 is fixedly installed on the upper surface of the insulation rack 1, and the output end of the first automatic metering pump 11 passes through the gas-water separator 12 and extends to the inside of the gas-water separator 12. A second automatic metering pump 25 is fixedly installed on the right side of the insulation rack 1, and the input end of the second automatic metering pump 25 passes through the insulation rack 1 and the constant temperature box 28 in sequence and is fixedly connected to the upper surface of the high-pressure reactor 4. A pressure gauge 13 is fixedly installed on the upper surface of the high-pressure reactor 4.

[0023] The liquid storage tank 2 can be used to place formation water with different mineralizations, the gas storage tank 3 can store carbon dioxide, and the suction force provided by the first manual metering pump 5 can directly transport the outside air to the three-way pipe 6. The electromagnetic valve 8 can be opened to transport the formation water and carbon dioxide to the high-pressure reactor 4. The pressure inside the high-pressure reactor 4 can be detected by the pressure gauge 13. When the pressure reaches the required pressure value, the carbon dioxide transportation is stopped. The heat provided by the electric heating resistance wire 10 can heat the inside of the constant temperature box 28. After the formation water is saturated with carbon dioxide, the excess carbon dioxide in the upper layer can be pumped out by the second automatic metering pump 25. The first automatic metering pump 11 can pump the formation water saturated with carbon dioxide into the gas-water separator 12, making the separation of formation water and dissolved carbon dioxide more convenient and time-saving, improving the efficiency of the experiment, and making it convenient to measure the solubility of carbon dioxide at different temperatures, different mineralizations and different pressures when conducting a simulation experiment on the solubility of carbon dioxide.

[0024] Furthermore, a stepper motor 14 is fixedly installed on the bottom surface of the high-pressure reactor 4. The output end of the stepper motor 14 power passes through the high-pressure reactor 4 and is fixedly installed with a stirring blade 15. The power provided by the stepper motor 14 can drive the stirring blade 15 to rotate, so that the formation water and carbon dioxide contact and dissolve, which increases the convenience of the device.

[0025] Furthermore, the upper surface of the liquid storage tank 2 is fixedly connected to a liquid inlet pipe 16, and the top end of the liquid inlet pipe 16 is threadedly connected to a sealing cover 17, so that formation water can be conveniently put into the liquid storage tank 2 through the liquid inlet pipe 16. The sealing cover 17 can seal the liquid inlet pipe 16 to prevent formation water from flowing out, thereby increasing the practicability of the device.

[0026] Furthermore, an air intake pipe 18 is fixedly installed on the upper surface of the gas storage tank 3, and a one-way valve 19 is fixedly installed on the outer surface of the air intake pipe 18. Carbon dioxide can be conveniently transported to the gas storage tank 3 through the air intake pipe 18, and the one-way valve 19 can prevent the backflow of carbon dioxide, thereby further increasing the practicality of the device.

[0027] Furthermore, a nitrogen tank 20 is fixedly installed on the front of the temperature insulation rack 1, and a second piston 21 is slidably connected to the inner wall of the nitrogen tank 20. Nitrogen can be stored through the nitrogen tank 20, thereby facilitating the provision of pressure to the interior of the high-pressure reactor 4, further increasing the convenience of the device.

[0028] Furthermore, a second manual metering pump 22 is fixedly installed on the front of the temperature insulation rack 1, and the input end of the second manual metering pump 22 is fixedly connected to the bottom surface of the nitrogen tank 20. The air can be transported to the nitrogen tank 20 through the second manual metering pump 22, so that the second piston 21 can squeeze out the nitrogen, thereby increasing the convenience of nitrogen transportation.

[0029] Furthermore, the upper surface of the nitrogen tank 20 is fixedly connected to a gas pipe 23, and a back-pressure valve 24 is fixedly installed on the outer surface of the gas pipe 23. Nitrogen can be transported through the gas pipe 23. The back-pressure valve 24 is used to ensure that the pressure during the discharge of carbon dioxide and formation water is maintained at the experimental set pressure to prevent degassing of formation water.

[0030] Furthermore, a switch door 26 is movably hinged on the left side of the insulation frame 1, and a pull block 27 is fixedly installed on the left side of the switch door 26. The switch door 26 can be manually opened by the pull block 27, thereby facilitating the replenishment of formation water and carbon dioxide, thereby increasing the convenience of the device.

[0031] Working principle: When in use, first connect the first manual metering pump 5, the first automatic metering pump 11, the stepper motor 14, the second manual metering pump 22 and the electric thermal resistance wire 10 to the power supply. The liquid storage tank 2 can be used to place formation water with different mineralization degrees, and the gas storage tank 3 can store carbon dioxide. The suction force provided by the first manual metering pump 5 can directly transport the outside air to the three-way pipe 6, so that the first piston 9 can squeeze the formation water and carbon dioxide into the delivery pipe 7. Opening the solenoid valve 8 can transport the formation water and carbon dioxide to the high-pressure reactor 4. The pressure inside the high-pressure reactor 4 can be detected by the pressure gauge 13. When the pressure reaches the required pressure value, the carbon dioxide delivery is stopped. The heat provided by the electric thermal resistance wire 10 can heat the inside of the constant temperature box 28. The stepper motor The power provided by 14 can drive the stirring blade 15 to rotate, so that the formation water and carbon dioxide contact and dissolve. After the formation water is saturated with carbon dioxide, the excess carbon dioxide in the upper layer can be pumped out through the second automatic metering pump 25. The first automatic metering pump 11 can pump the formation water saturated with carbon dioxide into the gas-water separator 12, making the separation of formation water and dissolved carbon dioxide more convenient and time-saving, thereby improving the efficiency of the experiment. When conducting a simulation experiment on the solubility of carbon dioxide, it is convenient to measure the solubility of carbon dioxide under different temperatures, different mineralizations and different pressures, thereby facilitating understanding the effects of temperature, mineralization and pressure on the dissolution of carbon dioxide. The back-pressure valve 24 is used to ensure that the pressure during the discharge of carbon dioxide and formation water is maintained at the experimental set pressure, making the device more practical.

[0032] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

Claims

1. A simulation experimental device for measuring CO2 solubility, characterized in that: The invention comprises a temperature-insulating frame (1), a thermostatic box (28) is fixedly mounted on the inner bottom wall of the temperature-insulating frame (1), a liquid storage tank (2) and a gas storage tank (3) are fixedly mounted on the inner bottom wall of the thermostatic box (28), a high-pressure reaction kettle (4) is fixedly mounted on the inner bottom wall of the thermostatic box (28), three electric heating resistance wires (10) are fixedly mounted on the outer surface of the thermostatic box (28), a first manual metering pump (5) is fixedly mounted on the back side of the temperature-insulating frame (1), and the first manual metering pump (5) The output end of the three-way pipe (6) is fixedly connected to the output end, and the end of the three-way pipe (6) away from the first manual metering pump (5) passes through the temperature-isolating frame (1) and the constant temperature box (28) in sequence and is fixedly connected to the bottom surface of the liquid storage tank (2) and the gas storage tank (3). The inner walls of the liquid storage tank (2) and the gas storage tank (3) are both slidably connected to the first piston (9). The upper surfaces of the liquid storage tank (2) and the gas storage tank (3) are fixedly connected to the delivery pipe (7). The delivery pipe (7) is away from the liquid storage tank (2) and the gas storage tank (3). One end of the gas tank (3) is fixedly connected to the upper surface of the high-pressure reactor (4); the outer surfaces of the three-way pipe (6) and the two delivery pipes (7) are fixedly installed with electromagnetic valves (8); a first automatic metering pump (11) is fixedly installed on the front of the temperature-insulating frame (1); the input end of the first automatic metering pump (11) passes through the temperature-insulating frame (1) and the constant temperature box (28) in sequence and is fixedly connected to the bottom surface of the high-pressure reactor (4); a gas-water separator (12) is fixedly installed on the upper surface of the temperature-insulating frame (1); the output end of the first automatic metering pump (11) passes through the gas-water separator (12) and extends to the inside of the gas-water separator (12); a second automatic metering pump (25) is fixedly installed on the right side of the temperature-insulating frame (1); the input end of the second automatic metering pump (25) passes through the temperature-insulating frame (1) and the constant temperature box (28) in sequence and is fixedly connected to the upper surface of the high-pressure reactor (4); and a pressure gauge (13) is fixedly installed on the upper surface of the high-pressure reactor (4).

2. A simulation experimental device for measuring CO2 solubility according to claim 1, characterized in that: A stepper motor (14) is fixedly mounted on the bottom surface of the high-pressure reactor (4); an output end of the power of the stepper motor (14) passes through the high-pressure reactor (4) and is fixedly mounted with a stirring blade (15).

3. A simulation experimental device for measuring CO2 solubility according to claim 1, characterized in that: The upper surface of the liquid storage tank (2) is fixedly connected to a liquid inlet pipe (16), and the top end of the liquid inlet pipe (16) is threadedly connected to a sealing cover (17).

4. A simulation experimental device for measuring CO2 solubility according to claim 1, characterized in that: An air intake pipe (18) is fixedly mounted on the upper surface of the air storage tank (3), and a one-way valve (19) is fixedly mounted on the outer surface of the air intake pipe (18).

5. A simulation experimental device for measuring CO2 solubility according to claim 1, characterized in that: A nitrogen tank (20) is fixedly mounted on the front of the temperature-isolating rack (1), and a second piston (21) is slidably connected to the inner wall of the nitrogen tank (20).

6. A simulation experimental device for measuring CO2 solubility according to claim 1, characterized in that: A second manual metering pump (22) is fixedly mounted on the front side of the temperature-isolating rack (1), and an input end of the second manual metering pump (22) is fixedly connected to the bottom surface of the nitrogen tank (20).

7. A simulation experimental device for measuring CO2 solubility according to claim 5, characterized in that: The upper surface of the nitrogen tank (20) is fixedly connected to a gas delivery pipe (23), and a back pressure valve (24) is fixedly installed on the outer surface of the gas delivery pipe (23).

8. A simulation experimental device for measuring CO2 solubility according to claim 1, characterized in that: A switch door (26) is movably hinged on the left side of the temperature-isolating rack (1), and a pull block (27) is fixedly mounted on the left side of the switch door (26).

Images