An adsorption and desorption experimental device and an experimental exploration method thereof

Abstract

The present application relates to the technical field of teaching experiment device, in particular to an absorption and desorption experiment device and an experiment exploring method thereof, comprising a filler tower and a double-tower type experiment device based on the filler tower. A blower, a CO2 storage bottle, a first storage tank and a second storage tank are arranged in the experiment device and are connected with the first and second filler towers respectively. The first and second filler towers can respectively complete absorption, desorption and saturation operations. For example, the first filler tower completes its absorption operation in cooperation with the second storage tank, and the second filler tower completes its saturation operation in cooperation with the second storage tank. After the saturation operation, the first filler tower can complete its desorption operation in cooperation with the second storage tank. The saturation operation of the first filler tower is completed in cooperation with the first storage tank, so that a single tower can complete absorption and desorption operations. At this time, the equipment conditions are the same, so that the experimental results are more convincing. In addition, when different fillers are compared, the filler loading is faster, which is convenient for use in experimental teaching.

Description

Technical Field

[0001] This invention relates to the field of teaching experimental device technology, specifically to an absorption and desorption experimental device and its experimental investigation method. Background Technology

[0002] In chemical engineering principles teaching experiments, there are experiments on absorption and desorption. Among them, the operation of separating gas mixtures by utilizing the difference in solubility of gases in liquids is called absorption. If the equilibrium vapor pressure of a certain component in the solution is greater than the partial pressure of that component in the mixed gas, this component will be released from the solution, that is, transferred from the liquid phase to the gas phase. This situation is called desorption.

[0003] Absorption and desorption are widely used in modern industry. Therefore, in order to facilitate students' learning and understanding, experimental teaching is often accompanied by corresponding experimental devices to improve teaching effectiveness. Practice shows that the effects of absorption and desorption are affected by the packing material itself and the packing height in the packed tower. Therefore, for experimental teaching itself, it is necessary to compare these factors as much as possible to deepen students' understanding of the knowledge.

[0004] However, existing absorption and desorption experimental devices often fall short in their ability to explore and compare the aforementioned factors. For example, existing single-tower absorption experimental equipment can only be filled with one type of packing material during operation, thus failing to demonstrate the superiority or inferiority of different packing materials and hindering students' understanding of the impact of the packing material itself on the operational effect of the packed tower. Existing dual-tower combined absorption and desorption experimental equipment allows for the selective filling of one or two types of packing materials, but ultimately each tower can only perform one operation—either absorption or desorption—making it impossible to compare different packing materials. Verification can only be achieved by operating multiple devices or conducting multiple experiments. This method not only increases operational intensity and requires a large equipment footprint, but also makes it difficult to ensure consistent operating conditions. Furthermore, the accuracy errors between different sensors result in poor persuasiveness, and the operation is overly complex for scientific research verification.

[0005] In addition, the packed towers used in existing absorption and desorption experimental devices are relatively complicated to replace and fill with packing material, which is time-consuming and labor-intensive and causes inconvenience to the experimental operation. Therefore, an absorption and desorption experimental device that facilitates the replacement and filling of packing material during the experimental operation, is simpler to operate, and can explore the absorption and desorption effects of different packing materials under the same experimental conditions is an urgent problem to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide an absorption and desorption experimental apparatus and its experimental investigation method, in order to solve the problem that existing absorption and desorption experimental apparatuses are difficult to replace during the experiment, and the equipment and other conditions are inconsistent under different operations, resulting in unconvincing experimental results.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an absorption and desorption experimental apparatus, comprising a packed tower, wherein packing material is filled in the packed tower, an inlet pipe is provided at the bottom of the packed tower, an outlet pipe is provided at the top of the packed tower, a liquid inlet pipe is provided at the top of the packed tower, and a liquid outlet pipe is provided at the bottom of the packed tower. There are two packed towers, namely a first packed tower and a second packed tower. The inlet pipes of the first and second packed towers are respectively connected to a blower and a CO2 storage bottle. The liquid inlet pipes of the first and second packed towers are respectively connected to a first storage tank and a second storage tank. The liquid outlet pipe of the first packed tower is connected to the first storage tank, and the liquid outlet pipe of the second packed tower is connected to the second storage tank.

[0008] Furthermore, the packed tower is equipped with a mesh gas-liquid distributor in the shape of an inverted frustum. A packing filling port is provided above the top of the packed tower, and a packing discharge port is provided below the bottom of the packed tower. The upper part of the gas-liquid distributor is directly connected to the packing filling port, and the lower part of the gas-liquid distributor is directly connected to the packing discharge port. The gas inlet pipe of the packed tower is arranged outside the gas-liquid distributor, and the liquid outlet pipe of the packed tower is arranged on one side of the packing discharge port.

[0009] Furthermore, the first inlet pipe of the first packed tower is connected to both the first air inlet pipe and the first CO2 inlet pipe; the second inlet pipe of the second packed tower is connected to both the second air inlet pipe and the second CO2 inlet pipe; the first air inlet pipe and the second air inlet pipe are connected to a blower; the first CO2 inlet pipe and the second CO2 inlet pipe are connected to a CO2 storage bottle; flow measurement and indicating instruments are installed on both the first air inlet pipe and the second air inlet pipe; flow measurement and indicating control instruments are installed on both the first CO2 inlet pipe and the second CO2 inlet pipe; in the first CO2 content detection indicators are installed on the inlet pipe, the first outlet pipe of the first packed tower, the second inlet pipe, and the second outlet pipe of the second packed tower, respectively; the first liquid inlet pipe of the first packed tower is connected to the first liquid inlet branch pipe and the second liquid inlet branch pipe, respectively; the second liquid inlet pipe of the second packed tower is connected to the third liquid inlet branch pipe and the fourth liquid inlet branch pipe, respectively; the first liquid inlet branch pipe and the second liquid inlet branch pipe are connected to the first storage tank, respectively; the third liquid inlet branch pipe and the fourth liquid inlet branch pipe are connected to the second storage tank, respectively; and flow measurement indicators are installed on the first liquid inlet pipe and the second liquid inlet pipe, respectively.

[0010] Furthermore, the first and second storage tanks are respectively connected to a tap water inlet; the bottom of the first storage tank is connected to a first and second inlet branch pipe via a first inlet pump; the bottom of the second storage tank is connected to a third and fourth inlet branch pipe via a second inlet pump; the bottoms of the first and second storage tanks are connected to a trench; electric valves are respectively installed between the first and second air inlet pipes, the first and second inlet branch pipes, the third and fourth inlet branch pipes, the tap water inlet and the first and second storage tanks, and between the first and second storage tanks and the trench.

[0011] The experimental methods of the above-mentioned experimental setup include a method for investigating the absorption and desorption performance of a packing material, a method for investigating the absorption and desorption performance of the same packing material at different packing heights, and a method for investigating the absorption and desorption performance of different packing materials at the same packing height.

[0012] Furthermore, the method for investigating the absorption and desorption properties of the filler includes the following steps:

[0013] S10. The packing material to be investigated is loaded into the first packed tower, and any packing material is loaded into the second packed tower;

[0014] S11. Inject an appropriate amount of water into the second storage tank through the tap water interface;

[0015] S12. Introduce liquid into the first packed tower through the third liquid inlet branch pipe, and introduce a mixture of air and carbon dioxide into the first packed tower through the first air inlet pipe and the first CO2 inlet pipe. Record the experimental data during the process until the absorption operation is completed, and empty the first storage tank.

[0016] S13. Again, inject an appropriate amount of water into the second storage tank through the tap water interface;

[0017] S14. Introduce liquid into the second packed tower through the fourth inlet branch pipe, and introduce pure carbon dioxide into the second packed tower only through the second CO2 inlet pipe. Observe the data of each instrument until the absorbent reaches saturation.

[0018] S15. Inject the saturated liquid in S14 into the first packed tower through the third inlet branch pipe, and introduce air into the first packed tower only through the first air inlet pipe. Record the experimental data during the process until the desorption operation is completed. Empty the first storage tank and shut down the experimental equipment.

[0019] S16. Summarize, process, and calculate the experimental data to obtain the data on the absorption and desorption performance of the packing material being investigated.

[0020] Furthermore, the method for investigating the absorption and desorption performance of the same packing material at different packing heights includes the following steps:

[0021] S20. The packing material to be investigated is loaded into the first packed tower, and any packing material is loaded into the second packed tower;

[0022] S21. Inject an appropriate amount of water into the second storage tank through the tap water interface;

[0023] S22. Liquid is introduced into the first packed tower through the third liquid inlet branch pipe, and a mixture of air and carbon dioxide is introduced into the first packed tower through the first air inlet pipe and the first CO2 inlet pipe. Experimental data are recorded during the process until the absorption operation is completed and the first storage tank is emptied.

[0024] S23. Again, inject an appropriate amount of water into the second storage tank through the tap water inlet;

[0025] S24. Introduce liquid into the second packed tower through the fourth inlet branch pipe, and introduce pure carbon dioxide into the second packed tower only through the second CO2 inlet pipe. Observe the data of each instrument until the absorbent reaches saturation.

[0026] S25. The saturated liquid in S24 is fed into the first packed tower through the third inlet branch pipe, and air is introduced into the first packed tower only through the first air inlet pipe. The experimental data is recorded during the process until the desorption operation is completed, and the first storage tank is emptied.

[0027] S26. Open the packing discharge port at the bottom of the first packed tower and take out the packing to be investigated. Then fill it with different heights through the packing filling port.

[0028] S27. Repeat steps S21 to S25. After the experiment, turn off the experimental apparatus.

[0029] S28. Summarize, process and calculate the experimental data to obtain the data on the absorption and desorption performance of the packing material at different packing heights.

[0030] Furthermore, the method for investigating the absorption and desorption performance of different fillers at the same packing height includes the following steps:

[0031] S30. The first type of packing to be investigated is loaded into the first packed tower, and any type of packing is loaded into the second packed tower.

[0032] S31. Inject an appropriate amount of water into the second storage tank through the tap water interface;

[0033] S32. Introduce liquid into the first packed tower through the third liquid inlet branch pipe, and introduce a mixture of air and carbon dioxide into the first packed tower through the first air inlet pipe and the first CO2 inlet pipe. Record the experimental data during the process until the absorption operation is completed, and empty the first storage tank.

[0034] S33. Again, inject an appropriate amount of water into the second storage tank through the tap water interface;

[0035] S34. Introduce liquid into the second packed tower through the fourth inlet branch pipe, and introduce pure carbon dioxide into the second packed tower only through the second CO2 inlet pipe. Observe the data of each instrument until the absorbent reaches saturation.

[0036] S35. The saturated liquid in S34 is fed into the first packed tower through the third inlet branch pipe, and air is introduced into the first packed tower only through the first air inlet pipe. The experimental data is recorded during the process until the desorption operation is completed, and the first storage tank is emptied.

[0037] S36. Open the packing discharge port at the bottom of the first packed tower and remove the packing to be investigated. Then, fill the second type of packing to the same height through the packing filling port.

[0038] S37. Repeat steps S31 to S35. After the experiment is completed, turn off the experimental apparatus.

[0039] S38. Summarize, process and calculate the experimental data to obtain data on the absorption and desorption performance of different fillers at the same packing height.

[0040] Furthermore, the method for investigating the absorption and desorption performance of different fillers at the same packing height includes the following steps:

[0041] S40. The first type of packing material to be investigated is loaded into the first packed tower, and the second type of packing material is loaded into the second packed tower, ensuring the same loading height.

[0042] S41. Inject an appropriate amount of water into the second storage tank through the tap water interface;

[0043] S42. Introduce liquid into the first packed tower through the third liquid inlet branch pipe, and introduce a mixture of air and carbon dioxide into the first packed tower through the first air inlet pipe and the first CO2 inlet pipe. Record the experimental data during the process until the absorption operation is completed, and empty the first storage tank.

[0044] S43. Again, inject an appropriate amount of water into the second storage tank through the tap water inlet;

[0045] S44. Introduce liquid into the second packed tower through the fourth inlet branch pipe, and introduce pure carbon dioxide into the second packed tower only through the second CO2 inlet pipe. Observe the data of each instrument until the absorbent reaches saturation.

[0046] S45. The saturated liquid in S44 is fed into the first packed tower through the third inlet branch pipe, and air is introduced into the first packed tower only through the first air inlet pipe. The experimental data is recorded during the process until the desorption operation is completed, and the first storage tank is emptied.

[0047] S46. Inject an appropriate amount of water into the first storage tank through the tap water interface;

[0048] S47. Introduce liquid into the second packed tower through the second liquid inlet branch pipe, and introduce a mixture of air and carbon dioxide into the second packed tower through the second air inlet pipe and the second CO2 inlet pipe. Record the experimental data during the process until the absorption operation is completed, and empty the second storage tank.

[0049] S48. Again, inject an appropriate amount of water into the first storage tank through the tap water interface;

[0050] S49. Introduce liquid into the first packed tower through the third inlet branch pipe, and introduce pure carbon dioxide into the first packed tower only through the first CO2 inlet pipe. Observe the data of each instrument until the absorbent reaches saturation.

[0051] S410. The saturated liquid in S49 is fed into the second packed tower through the second inlet branch pipe, and air is introduced into the second packed tower only through the second air inlet pipe. The experimental data is recorded during the process until the desorption operation is completed. The second storage tank is emptied. After the experiment is completed, the experimental device is turned off.

[0052] S411. Summarize, process and calculate the experimental data to obtain data on the absorption and desorption performance of different packing materials at the same packing height.

[0053] The beneficial effects of this invention are:

[0054] 1. It can realize absorption and desorption operations in a single tower, so that for the same packing material, absorption and desorption are carried out under the same equipment conditions, thus making the experimental results more convincing;

[0055] 2. The internal structural design of the packed tower makes the replacement of packing material faster and more efficient, facilitating use and improving experimental efficiency;

[0056] 3. The first packed tower and the second packed tower are used together, which makes it more convenient and efficient to use, and also helps to improve experimental efficiency. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the packed tower structure of the present invention;

[0058] Figure 2 This is a schematic diagram of the gas-liquid distributor structure in the packed tower of the present invention;

[0059] Figure 3 This is a schematic diagram of the absorption and desorption experimental apparatus of the present invention.

[0060] The names corresponding to each mark in the diagram:

[0061] 1. Packed tower; 11. Air inlet pipe; 12. Air outlet pipe; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Gas-liquid distributor; 151. Through hole; 16. Packing layer; 17. Packing filling port; 18. Packing unloading port; 20. Blower; 201. First air inlet pipe; 202. Second air inlet pipe; 21. CO2 storage bottle; 211. First CO2 inlet pipe; 212. Second CO2 inlet pipe; 22. First storage tank; 221. First liquid inlet branch pipe; 222. Second liquid inlet branch pipe; 23. First liquid inlet pump; 24. Second storage tank; 241. Third liquid inlet branch pipe; 242. Fourth liquid inlet branch pipe; 25. Second liquid inlet pump; 26. Water inlet;

[0062] 1-1, First packed tower; 1-11, First air inlet pipe; 1-12, First air outlet pipe; 1-13, First liquid inlet pipe; 1-14, First liquid outlet pipe; 1-2, Second packed tower; 1-21, Second air inlet pipe; 1-22, Second air outlet pipe; 1-23, Second liquid inlet pipe; 1-24, Second liquid outlet pipe;

[0063] FI, flow measurement and indicating instrument; FIC, flow measurement and indicating control instrument; AI, CO2 content detection and indicating instrument; VA, electric valve. Detailed Implementation

[0064] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0065] like Figure 1-2 As shown, in the packed tower 1 of this invention, an air inlet pipe 11 is provided below the packed tower 1, and a corresponding air outlet pipe 12 is provided above the packed tower 1; a liquid inlet pipe 13 is provided above the packed tower 1, and a corresponding liquid outlet pipe 14 is provided below the packed tower 1; an inverted frustum-shaped gas-liquid distributor 15 is provided in the packed tower 1; a packing filling port 17 is provided above the packed tower 1, and a packing discharge port 18 is provided on the west side of the packed tower 1, wherein the packing filling port 17 is connected to the upper part of the gas-liquid distributor 15, the lower part of the gas-liquid distributor 15 is connected to the packing discharge port 18, and through holes 151 are provided around the gas-liquid distributor 15; the air inlet pipe 11 is arranged on the outside of the gas-liquid distributor 15, and the liquid outlet pipe 14 is arranged on one side of the packing discharge port 18.

[0066] like Figure 3As shown, the absorption and desorption experimental apparatus of the present invention includes a first packed tower 1-1 and a second packed tower 1-2. A blower 20 is connected to the first air inlet pipe 1-11 of the first packed tower 1-1 via a first air inlet pipe 201, and to the second air inlet pipe 1-21 of the second packed tower 1-2 via a second air inlet pipe 202. A CO2 storage bottle 21 is connected to the first air inlet pipe 1-11 of the first packed tower 1-1 via a first CO2 inlet pipe 211, and to the second air inlet pipe 1-21 of the second packed tower 1-2 via a second CO2 inlet pipe 212. Correspondingly, a first outlet pipe 1-12 is provided above the first packed tower 1-1, and a second outlet pipe 1-22 is provided above the second packed tower 1-2.

[0067] A first storage tank 22 and a second storage tank 24 are respectively provided. The first storage tank 22 is connected to a first inlet pump 23, which is connected to a first inlet branch pipe 211 and a second inlet branch pipe 222. The second storage tank 24 is connected to a second inlet pump 25, which is connected to a third inlet branch pipe 241 and a fourth inlet branch pipe 242. The first inlet branch pipe 211 and the third inlet branch pipe 241 are connected to a first inlet pipe 1-13, and the second inlet branch pipe 222 and the fourth inlet branch pipe 242 are connected to a second inlet pipe 1-23.

[0068] A water inlet 26 is provided, which is connected to the first storage tank 22 and the second storage tank 24 respectively. Drain pipes are provided at the bottom of the first storage tank 22 and the second storage tank 24, and the drain pipes are connected to the trench.

[0069] Flow measurement indicators are installed on the first air inlet pipe 201 and the second air inlet pipe 202 respectively; flow measurement and control instruments are installed on the first CO2 inlet pipe 211 and the second CO2 inlet pipe 212 respectively; CO2 content detection indicators are installed on the first air inlet pipe 1-11, the first air outlet pipe 1-12, the second air inlet pipe 1-21 and the second air outlet pipe 1-22 respectively; electric valves are installed between the first air inlet pipe 201, the second air inlet pipe 202, the first liquid inlet branch pipe 221, the second liquid inlet branch pipe 222, the third liquid inlet branch pipe 241, the fourth liquid inlet branch pipe 242, the tap water interface 26 and the first storage tank 22 and the second storage tank 24, and between the first storage tank 22 and the second storage tank 24 and the trench respectively.

[0070] The principle of this invention is as follows:

[0071] In use, the first packed tower 1-1 and the second packed tower 1-2 of the present invention can be used as an absorption tower and a desorption tower, respectively, and can be operated individually or in combination, as detailed below:

[0072] For the first packed tower 1-1

[0073] 1. The first packed tower 1-1 serves as an absorption tower.

[0074] At this time, valve VA04 is opened, and water is introduced into the second storage tank 24 through the tap water interface 26. Valve VA07 on the third liquid inlet branch pipe 241 is opened, and liquid is introduced into the first packed tower 1-1 through the second liquid inlet pump 25. Valve VA01 is opened, and the blower 20 and CO2 storage bottle 21 introduce a mixture of air and carbon dioxide into the first packed tower 1-1 through the first CO2 inlet pipe 211. The absorbed gas is discharged into the air through the first outlet pipe 1-12. The absorbent liquid is collected in the first storage tank 22 (it should be noted that the valves not mentioned above are closed at this time, the same below).

[0075] 2. The first packed tower 1-1 serves as a desorption tower.

[0076] At this time, valve VA04 is opened, and water is introduced into the second storage tank 24 through the tap water interface 26. Valve VA08 on the fourth liquid inlet branch pipe 242 is opened, and liquid is introduced into the second packed tower 1-2 through the second liquid inlet pump 25. Carbon dioxide gas (no air) is introduced into the second packed tower 1-2 through the CO2 storage bottle 21 and the second CO2 inlet pipe 212. The second packed tower 1-2 is self-circulated until the absorbent is saturated. The saturated liquid is collected in the second storage tank 24.

[0077] Open valve VA07 on the third inlet branch pipe 241 to allow liquid to enter the first packed tower 1-1 through the second inlet pump 25; open valve VA01 and blower 20 to introduce air into the first packed tower 1-1 (at this time, CO2 is not introduced), and the desorbed liquid is collected in the first storage tank 22.

[0078] 3. The first packed tower 1-1 serves as a saturation tower.

[0079] At this time, valve VA03 is opened, and water is introduced into the first storage tank 22 through the tap water interface 26. Valve VA05 on the first liquid inlet branch pipe 221 is opened, and liquid is introduced into the first packed tower 1-1 through the first liquid inlet pump 23. Carbon dioxide gas (no air) is introduced into the first packed tower 1-1 through the CO2 storage bottle 21 and the first packed tower 1-1 is self-circulated until the absorbent is saturated. The saturated liquid is collected in the first storage tank 22, and the saturated liquid in the first storage tank 22 can be used for the desorption process of the second storage tank 1-2.

[0080] The above describes in detail the operation process of the first packed tower 1-1 as an absorption tower, desorption tower and saturation tower. The operation of the second packed tower 1-2 is similar to the above process, which is easy for those skilled in the art to understand, so it will not be elaborated further.

[0081] When conducting experiments in this invention, such as investigating the absorption and desorption effects of a certain packing material, if the first packed tower 1-1 is used as the experimental tower, the absorption operation can be completed according to step 1 above. After the absorption operation is completed, the saturated liquid can be prepared through the second packed tower 1-2. At this time, the first storage tank 22 is emptied, and the desorption operation can be carried out. Since the operation is carried out in the same packed tower, the sensors involved are kept consistent, making the overall experiment more efficient and accurate, and the experimental results more convincing, which helps to improve the teaching effect.

[0082] If it is necessary to conduct experiments on different filling heights of the same packing material or different packing materials during the process, the packing tower 1 of the present invention can be filled quickly and the packing material can be easily replaced. After completing one set of experiments, the packing material can be replaced and the next set of experiments can be carried out quickly. At this time, the sensors used in the two sets of experiments are consistent, making the experiments more convincing.

[0083] Meanwhile, the experimental apparatus of this invention provides a more efficient research method for the above-mentioned experiments with different filling heights or different packing materials. During the process, two different filling heights or different types of packing materials can be filled into the first packed tower 1-1 and the second packed tower 1-2 respectively. At this time, the absorption and desorption experiment of one packing material can be completed in the first packed tower 1-1, while the second packed tower 1-2 plays a role in assisting in the preparation of saturated liquid. Then, the absorption and desorption experiment of the other packing material can be completed in the second packed tower 1-2, while the first packed tower 1-1 plays a role in preparing saturated liquid. Although the whole process is under different sensors, there is no need to change the packing material, which is more efficient and is also a good choice when rapid experiments are required.

[0084] This invention involves the principles of absorption and desorption during the experiment, as well as the measurement, collection, and calculation of experimental data. The process utilizes existing mature technologies. For example, in calculating the absorption and desorption amounts, the inlet air and liquid volumes are measured using a flow indicator, and the CO2 content in the inlet and outlet air is measured using a CO2 content detection indicator, thereby obtaining the CO2 absorption amount. The ratio of this absorption amount to the absorption liquid is the absorption amount per unit mass of absorption liquid. Similarly, desorption is performed in the same way. The above process is not difficult for those skilled in the art to understand, and will not be elaborated further.

[0085] This invention is not limited to the preferred embodiments described above. Anyone can derive other forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this invention.

Claims

1. An absorption and desorption experimental apparatus, comprising a packed tower (1), a packing layer (16) packed in the packed tower (1), an inlet pipe (11) disposed below the packed tower (1), an outlet pipe (12) disposed above the packed tower (1), a liquid inlet pipe (13) disposed above the packed tower (1), and a liquid outlet pipe (14) disposed below the packed tower, characterized in that: There are two packed towers (1), namely a first packed tower (1-1) and a second packed tower (1-2). The air inlet pipe (11) of the first packed tower (1-1) and the second packed tower (1-2) are respectively connected to a blower (20) and a CO2 storage bottle (21). The liquid inlet pipe (13) of the first packed tower (1-1) and the second packed tower (1-2) are respectively connected to a first storage tank (22) and a second storage tank (24). The liquid outlet pipe (14) of the first packed tower (1-1) is connected to the first storage tank (22), and the liquid outlet pipe (14) of the second packed tower (1-2) is connected to the second storage tank (24). The packed tower (1) is provided with a mesh gas-liquid distributor (15) in the shape of an inverted frustum. A packing filling port (17) is provided above the top of the packed tower (1), and a packing discharge port (18) is provided below the bottom of the packed tower (1). The upper part of the gas-liquid distributor (15) is directly connected to the packing filling port (17), and the lower part of the gas-liquid distributor (15) is directly connected to the packing discharge port (18). The gas inlet pipe (11) of the packed tower (1) is arranged outside the gas-liquid distributor (15), and the liquid outlet pipe (14) of the packed tower (1) is arranged on one side of the packing discharge port (18). The first inlet pipe (1-11) of the first packed tower (1-1) is connected to the first air inlet pipe (201) and the first CO2 inlet pipe (211) respectively; the second inlet pipe (1-21) of the second packed tower (1-2) is connected to the second air inlet pipe (202) and the second CO2 inlet pipe (212) respectively; the first air inlet pipe (201) and the second air inlet pipe (202) are connected to the blower (20) respectively; the first CO2 inlet pipe (211) and the second CO2 inlet pipe (212) are connected to the CO2 storage bottle (21) respectively; flow measurement indicator (FI) is installed on the first air inlet pipe (201) and the second air inlet pipe (202) respectively; flow measurement indicator control (FIC) is installed on the first CO2 inlet pipe (211) and the second CO2 inlet pipe (212) respectively; the first inlet pipe (1-11) and the first packed tower CO2 content detection indicators (AI) are installed on the first outlet pipe (1-12) and the second inlet pipe (1-21) of the first packed tower (1-1) and the second outlet pipe (1-22) of the second packed tower (1-2). The first liquid inlet pipe (1-13) of the first packed tower (1-1) is connected to the first liquid inlet branch pipe (221) and the second liquid inlet branch pipe (222) respectively. The second liquid inlet pipe (1-23) of the second packed tower (1-2) is connected to the third liquid inlet branch pipe (241) and the fourth liquid inlet branch pipe (242) respectively. The first liquid inlet branch pipe (221) and the second liquid inlet branch pipe (222) are connected to the first storage tank (22) respectively. The third liquid inlet branch pipe (241) and the fourth liquid inlet branch pipe (242) are connected to the second storage tank (24) respectively. Flow measurement indicators (FI) are installed on the first liquid inlet pipe (1-13) and the second liquid inlet pipe (1-23) respectively.

2. The absorption and desorption experimental apparatus according to claim 1, characterized in that: The first storage tank (22) and the second storage tank (24) are respectively connected to the tap water interface (26); the bottom of the first storage tank (22) is connected to the first inlet branch pipe (221) and the second inlet branch pipe (222) through the first inlet pump (23); the bottom of the second storage tank (24) is connected to the third inlet branch pipe (241) and the fourth inlet branch pipe (242) through the second inlet pump (25); the first storage tank (22) and the second storage tank (24) The bottom of 24) is connected to the trench; electric valves (VA) are respectively installed between the first air inlet pipe (201), the second air inlet pipe (202), the first liquid inlet branch pipe (221), the second liquid inlet branch pipe (222), the third liquid inlet branch pipe (241), the fourth liquid inlet branch pipe (242), the tap water interface (26) and the first storage tank (22) and the second storage tank (24), and between the first storage tank (22) and the second storage tank (24) and the trench.

3. The experimental investigation method of the experimental apparatus according to any one of claims 1 to 2, characterized in that: This includes a method for investigating the absorption and desorption properties of packing materials, a method for investigating the absorption and desorption properties of the same packing material at different packing heights, and a method for investigating the absorption and desorption properties of different packing materials at the same packing height.

4. The experimental investigation method according to claim 3, characterized in that, The method for investigating the absorption and desorption properties of a filler includes the following steps: S10. The packing material to be investigated is loaded into the first packed tower (1-1), and any packing material is loaded into the second packed tower (1-2); S11. Inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S12. Liquid is introduced into the first packed tower (1-1) through the third liquid inlet branch pipe (241). A mixture of air and carbon dioxide is introduced into the first packed tower (1-1) through the first air inlet pipe (201) and the first CO2 inlet pipe (211). Experimental data are recorded during the process until the absorption operation is completed. The first storage tank (22) is emptied. S13. Again, inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S14. Introduce liquid into the second packed tower (1-2) through the fourth inlet branch pipe (242), and introduce pure carbon dioxide into the second packed tower (1-2) only through the second CO2 inlet pipe (212). Observe the data of each instrument until the absorbent reaches saturation. S15. The saturated liquid in S14 is fed into the first packed tower (1-1) through the third inlet branch pipe (241), and air is introduced into the first packed tower (1-1) only through the first air inlet pipe (201). The experimental data are recorded during the process until the desorption operation is completed. The first storage tank (22) is emptied and the experimental equipment is turned off. S16. Summarize, process, and calculate the experimental data to obtain the data on the absorption and desorption performance of the packing material being investigated.

5. The experimental investigation method according to claim 3, characterized in that, The method for investigating the absorption and desorption performance of the same packing material at different packing heights includes the following steps: S20. The packing material to be investigated is loaded into the first packed tower (1-1), and any packing material is loaded into the second packed tower (1-2); S21. Inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S22. Liquid is introduced into the first packed tower (1-1) through the third liquid inlet branch pipe (241). A mixture of air and carbon dioxide is introduced into the first packed tower (1-1) through the first air inlet pipe (201) and the first CO2 inlet pipe (211). Experimental data are recorded during the process until the absorption operation is completed. The first storage tank (22) is emptied. S23. Again, inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S24. Introduce liquid into the second packed tower (1-2) through the fourth inlet branch pipe (242), and introduce pure carbon dioxide into the second packed tower (1-2) only through the second CO2 inlet pipe (212). Observe the data of each instrument until the absorbent reaches saturation. S25. The saturated liquid in S24 is fed into the first packed tower (1-1) through the third inlet branch pipe (241), and air is introduced into the first packed tower (1-1) only through the first air inlet pipe (201). The experimental data are recorded during the process until the desorption operation is completed, and the first storage tank (22) is emptied. S26. Open the packing discharge port (18) at the bottom of the first packed tower (1-1) and take out the packing to be investigated. Then fill it with different heights through the packing filling port (17). S27. Repeat steps S21 to S25. After the experiment, turn off the experimental apparatus. S28. Summarize, process and calculate the experimental data to obtain the data on the absorption and desorption performance of the packing material at different packing heights.

6. The experimental investigation method according to claim 3, characterized in that, The method for investigating the absorption and desorption performance of different fillers at the same packing height includes the following steps: S30. The first type of packing to be investigated is loaded into the first packed tower (1-1), and any packing is loaded into the second packed tower (1-2); S31. Inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S32. Liquid is introduced into the first packed tower (1-1) through the third liquid inlet branch pipe (241). A mixture of air and carbon dioxide is introduced into the first packed tower (1-1) through the first air inlet pipe (201) and the first CO2 inlet pipe (211). Experimental data are recorded during the process until the absorption operation is completed. The first storage tank (22) is emptied. S33. Again, inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S34. Introduce liquid into the second packed tower (1-2) through the fourth inlet branch pipe (242), and introduce pure carbon dioxide into the second packed tower (1-2) only through the second CO2 inlet pipe (212). Observe the data of each instrument until the absorbent reaches saturation. S35. The saturated liquid in S34 is fed into the first packed tower (1-1) through the third inlet branch pipe (241), and air is introduced into the first packed tower (1-1) only through the first air inlet pipe (201). The experimental data are recorded during the process until the desorption operation is completed, and the first storage tank (22) is emptied. S36. Open the packing discharge port (18) at the bottom of the first packed tower (1-1) and take out the packing to be investigated. Then fill the second type of packing with the same height through the packing filling port (17). S37. Repeat steps S31 to S35. After the experiment, turn off the experimental apparatus. S38. Summarize, process and calculate the experimental data to obtain data on the absorption and desorption performance of different fillers at the same packing height.

7. The experimental investigation method according to claim 3, characterized in that, The method for investigating the absorption and desorption performance of different fillers at the same packing height includes the following steps: S40. The first type of packing material to be investigated is loaded into the first packed tower (1-1), and the second type of packing material is loaded into the second packed tower (1-2), ensuring the same loading height; S41. Inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S42. Liquid is introduced into the first packed tower (1-1) through the third liquid inlet branch pipe (241). A mixture of air and carbon dioxide is introduced into the first packed tower (1-1) through the first air inlet pipe (201) and the first CO2 inlet pipe (211). Experimental data are recorded during the process until the absorption operation is completed. The first storage tank (22) is emptied. S43. Again, inject an appropriate amount of water into the second storage tank (24) through the tap water inlet (26); S44. Introduce liquid into the second packed tower (1-2) through the fourth inlet branch pipe (242), and introduce pure carbon dioxide into the second packed tower (1-2) only through the second CO2 inlet pipe (212). Observe the data of each instrument until the absorbent reaches saturation. S45. The saturated liquid in S44 is fed into the first packed tower (1-1) through the third inlet branch pipe (241), and air is introduced into the first packed tower (1-1) only through the first air inlet pipe (201). The experimental data are recorded during the process until the desorption operation is completed, and the first storage tank (22) is emptied. S46. Inject an appropriate amount of water into the first storage tank (22) through the tap water inlet (26); S47. Liquid is introduced into the second packed tower (1-2) through the second liquid inlet branch pipe (222). A mixture of air and carbon dioxide is introduced into the second packed tower (1-2) through the second air inlet pipe (202) and the second CO2 inlet pipe (212). The experimental data are recorded during the process until the absorption operation is completed. The second storage tank (24) is emptied. S48. Again, inject an appropriate amount of water into the first storage tank (22) through the tap water inlet (26); S49. Introduce liquid into the first packed tower (1-1) through the third inlet branch pipe (241), and introduce pure carbon dioxide into the first packed tower (1-1) only through the first CO2 inlet pipe (211). Observe the data of each instrument until the absorbent reaches saturation. S410. The saturated liquid in S49 is fed into the second packed tower (1-2) through the second inlet branch pipe (222). Air is introduced into the second packed tower (1-2) only through the second air inlet pipe (202). The experimental data is recorded during the process until the desorption operation is completed. The second storage tank (24) is emptied. After the experiment is completed, the experimental device is turned off. S411. Summarize, process and calculate the experimental data to obtain data on the absorption and desorption performance of different packing materials at the same packing height.

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