Method for determining absorption capacity of carbon dioxide absorbent

Abstract

The invention relates to the technical field of environmental engineering, in particular to a method for determining the absorption capacity of a carbon dioxide absorbent, which is realized by using a device for determining the absorption capacity of the carbon dioxide absorbent. The device for determining the absorption capacity of the carbon dioxide absorbent comprises a measuring tank, a carbon dioxide compression tank, an absorption tank, a first air pump and a second air pump, the carbon dioxide compression tank is communicated with the measuring tank through an air inlet pipeline, and the measuring tank and the absorption tank are both communicated with two connecting pipes. According to the invention, the determination tank and the absorption tank can be used for separating the concentration determination and absorption operation of carbon dioxide, so that the carbon dioxide can be completely isolated from the carbon dioxide absorbent after being absorbed, and the contact degree of the carbon dioxide absorbent and carbon dioxide gas in the absorption tank can be effectively improved; the uniformity and consistency of the contact reaction of the carbon dioxide absorbent and carbon dioxide are ensured, and the measurement accuracy of the absorption capacity of the carbon dioxide absorbent is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of environmental engineering, and in particular to a method for determining the absorption capacity of a carbon dioxide absorbent. Background Art

[0002] Against the backdrop of global warming, the massive use of fossil fuels and other activities have led to an increase in carbon dioxide emissions, causing many serious environmental problems such as rising sea levels and frequent extreme weather. Therefore, it is urgent to reduce carbon dioxide emissions. Carbon dioxide absorbers can effectively capture carbon dioxide in exhaust gas at industrial emission sources, energy utilization links and other scenarios, playing a key role in reducing carbon dioxide emissions into the atmosphere. The strength of their absorption capacity is directly related to how much carbon dioxide can be removed from the emission source, which fundamentally determines the overall effect of emission reduction work.

[0003] However, the existing methods for determining the absorption capacity of carbon dioxide absorbents often have the following problems when used: In the process of determining the carbon dioxide absorption capacity of the carbon dioxide absorbent, it is necessary to accurately detect the concentration of carbon dioxide before and after absorption. However, carbon dioxide is usually in the same container before and after absorption. It is cumbersome to take the carbon dioxide absorbent out of the container, making it difficult to completely isolate the carbon dioxide absorbent when the concentration needs to be measured after the carbon dioxide is absorbed, which will affect the accuracy of the measurement of the absorption capacity of the carbon dioxide absorbent. In addition, the carbon dioxide absorbent usually contacts the carbon dioxide in the container in a static state to achieve the absorption operation of the container carbon dioxide. However, in this way, the degree of contact between the carbon dioxide absorbent and carbon dioxide is relatively limited, especially for granular and powdered carbon dioxide absorbents, which makes the uniformity of the contact reaction between carbon dioxide and the absorbent have certain limitations, and thus the sufficiency and consistency of the carbon dioxide absorption reaction cannot be guaranteed, which will also affect the accuracy of the measurement. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for determining the absorption capacity of a carbon dioxide absorbent, which can effectively solve the problems in the prior art that it is difficult to completely isolate the carbon dioxide absorbent when the concentration needs to be measured after the carbon dioxide is absorbed, and the degree of contact between the carbon dioxide absorbent and carbon dioxide is relatively limited, which affects the accuracy of the absorption capacity measurement of the carbon dioxide absorbent.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a method for determining the absorption capacity of a carbon dioxide absorbent. The method is implemented using a device for determining the absorption capacity of a carbon dioxide absorbent. The device for determining the absorption capacity of a carbon dioxide absorbent comprises a measuring tank, a carbon dioxide compression tank, an absorption tank, a first air pump and a second air pump. The carbon dioxide compression tank is connected to the measuring tank through an air intake pipe. The measuring tank and the absorption tank are both connected with two connecting pipes. The two connecting pipes on the measuring tank are respectively connected with the air outlet of the first air pump and the air inlet of the second air pump. The two connecting pipes on the absorption tank are respectively connected with the air inlet of the first air pump and the air outlet of the second air pump. The air inlet and the air outlet of the first air pump and the second air pump are both built-in with vortex flow sensors. The inner wall of the measuring tank is fixedly installed with a plurality of miniature gas sensors. The inner bottom surface of the absorption tank is rotatably connected with a uniform absorption component, and the uniform absorption component is used to achieve full and uniform contact between the carbon dioxide gas and the absorbent.

[0006] Furthermore, a plurality of the micro gas sensors are arranged in a circular shape and are equidistantly arranged on the inner wall of the measuring tank.

[0007] Furthermore, the uniform absorption component includes a rotating shaft rotatably connected to the inner bottom surface of the absorption tank, the outer wall of the rotating shaft is fixedly connected to a limited transfer tube, the outer wall of the limited transfer tube is slidably connected to a lifting sleeve, the upper position of the outer wall of the lifting sleeve is fixedly connected to a support frame, two absorbent placement boxes are fixedly connected to the support frame, the inner bottom surface of the absorption tank is rotatably connected to a ball screw, the ball screw is threadedly connected to a lifting guide block, the outer wall of the lifting guide block is fixedly connected to a connecting bracket, the end of the connecting bracket away from the lifting guide block is rotatably connected to the outer wall of the lifting sleeve through an annular bearing, the upper end surface of the absorption tank is fixedly connected to a linkage driving component, and the lower position of the outer wall of the rotating shaft is fixedly connected to a gas mixing component.

[0008] Furthermore, the linkage drive component includes a fixing frame fixedly connected to the upper end surface of the absorption tank, a low-speed motor is fixedly connected to the middle part of the fixing frame, the output end of the low-speed motor is fixedly connected to the upper end of the rotating shaft, and synchronous gears are fixedly connected to the upper position of the outer wall of the rotating shaft and the ball screw, and the two synchronous gears are connected by a synchronous belt transmission.

[0009] Furthermore, the gas mixing component includes a central gear ring fixedly connected to the lower position of the outer wall of the rotating shaft, a plurality of rotating rods are rotatably connected to the inner bottom surface of the absorption tank, the outer walls of several of the rotating rods are fixedly connected to transmission gears, several of the transmission gears are meshed with the central gear ring, and the upper ends of several of the rotating rods are fixedly connected to flow stirring blades.

[0010] Furthermore, two protrusions are fixedly connected to the outer wall of the position-limiting transfer tube, and two strip-shaped grooves are provided on the inner wall of the lifting sleeve, and the protrusions match the strip-shaped grooves.

[0011] Furthermore, a concave slide rail is fixedly connected to the inner wall of the absorption tank, a T-block is fixedly connected to the outer wall of the lifting guide block, and the end of the T-block matches the inner side of the concave slide rail.

[0012] Furthermore, both upper and lower ends of the position-limiting transfer tube are fixedly connected with limiting abutment plates.

[0013] A method for determining the absorption capacity of a carbon dioxide absorbent comprises the following steps: S1: Determination before absorption: Control the carbon dioxide compression tank to pass a proper amount of carbon dioxide gas into the measurement tank. After standing for a period of time, use several micro gas sensors to measure the carbon dioxide gas concentration C1 before absorption; S2: Uniform absorption: Control the No. 1 air pump to pump all the carbon dioxide gas in the measuring tank into the absorption tank, monitor and measure the pre-absorption flow rate V1 of the carbon dioxide gas, drive the two absorbent placement boxes to rotate and move up and down in the absorption tank synchronously, and drive several stirring blades to rotate to uniformly mix the carbon dioxide in the absorption tank, so that the carbon dioxide absorbent can fully and uniformly contact and react with the carbon dioxide in the absorption tank; S3: Measurement after absorption: When the uniform absorption reaches the specified reaction time T, the carbon dioxide gas absorbed in the absorption tank is completely pumped into the measurement tank by controlling the No. 2 air pump, and the post-absorption flow rate V2 of the carbon dioxide gas is monitored and measured. It is also left to stand for a period of time, and a number of micro gas sensors are used to measure the concentration of carbon dioxide gas after absorption C2. The absorption capacity of the carbon dioxide absorbent can be calculated by [(V1×C1 - V2×C2)×T].

[0014] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a measuring tank, an absorption tank, a first air pump and a second air pump, and the gas communication between the measuring tank and the absorption tank is completed by the first air pump and the second air pump, so that the concentration measurement and absorption operation of carbon dioxide can be separated by using the measuring tank and the absorption tank, ensuring that the carbon dioxide can be completely isolated from the carbon dioxide absorbent after being absorbed, and at the same time avoiding the complicated operation of taking out the carbon dioxide absorbent, which is conducive to improving the measurement accuracy of the carbon dioxide absorbent absorption capacity and reducing the operation cost of the carbon dioxide absorbent absorption capacity determination process; The present invention provides a uniform absorption component, which drives the support frame to rotate by driving the rotating shaft, the limit transfer tube and the lifting sleeve to rotate, so that the two absorbent placement boxes on the support frame can rotate in the absorption tank, and at the same time, the lifting guide block can be driven to move up and down by driving the ball screw to rotate, so that the lifting guide block can drive the lifting sleeve to move through the connecting bracket, so that the two absorbent placement boxes can be lifted and moved while rotating, and at the same time, a plurality of rotating rods and stirring blades at their upper ends can be driven to rotate synchronously, and the carbon dioxide in the absorption tank is stirred by the rapidly rotating stirring blades, so that the carbon dioxide in different areas of the absorption tank can diffuse more quickly with each other, and the mixing uniformity of the carbon dioxide in the absorption tank is improved, so that the contact degree between the carbon dioxide absorbent and the carbon dioxide gas in the absorption tank can be effectively improved, and the uniformity and consistency of the contact reaction between the carbon dioxide absorbent and the carbon dioxide can be ensured, so as to further ensure the accuracy of the measurement of the absorption capacity of the carbon dioxide absorbent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A flow chart of a method for determining the absorption capacity of a carbon dioxide absorbent according to the present invention; Figure 2 It is a schematic diagram of the overall structure of the device for determining the absorption capacity of a carbon dioxide absorbent according to the present invention; Figure 3 It is a schematic diagram of the internal structure of the measuring tank in the device for determining the absorption capacity of the carbon dioxide absorbent of the present invention; Figure 4 A schematic diagram of the internal structure of an absorption tank in the device for determining the absorption capacity of a carbon dioxide absorbent according to the present invention; Figure 5 It is a schematic diagram of the structure of a uniform absorption component in the device for determining the absorption capacity of a carbon dioxide absorbent according to the present invention; Figure 6 It is a schematic diagram of the structure of the connecting bracket part in the device for determining the absorption capacity of the carbon dioxide absorbent of the present invention; Figure markings: 1. measuring tank; 2. carbon dioxide compression tank; 3. absorption tank; 4. air pump No. 1; 5. air pump No. 2; 6. connecting pipe; 7. micro gas sensor; 8. rotating shaft; 9. limit transfer tube; 10. lifting sleeve; 11. supporting frame; 12. absorbent placement box; 13. ball screw; 14. lifting guide block; 15. connecting bracket; 16. annular bearing; 17. low-speed motor; 18. synchronous gear; 19. synchronous belt; 20. center gear ring; 21. rotating rod; 22. transmission gear; 23. stirring blade; 24. protrusion; 25. strip groove; 26. concave slide rail; 27. T-block; 28. limiting abutment plate. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention will be further described below in conjunction with the embodiments.

[0019] Example: Refer to Figure 2 and Figure 3 , a device for determining the absorption capacity of a carbon dioxide absorbent, comprising a measuring tank 1, a carbon dioxide compression tank 2, an absorption tank 3, a first air pump 4 and a second air pump 5, the carbon dioxide compression tank 2 is connected to the measuring tank 1 through an air inlet pipe, the measuring tank 1 and the absorption tank 3 are both connected with two connecting pipes 6, the two connecting pipes 6 on the measuring tank 1 are respectively connected with the air outlet of the first air pump 4 and the air inlet of the second air pump 5, the two connecting pipes 6 on the absorption tank 3 are respectively connected with the air inlet of the first air pump 4 and the air outlet of the second air pump 5, the air inlet and the air outlet of the first air pump 4 and the second air pump 5 are both built-in with vortex flow sensors, a plurality of micro gas sensors 7 are fixedly installed on the inner wall of the measuring tank 1, and the plurality of micro gas sensors 7 are arranged in a ring-shaped and equidistant manner on the inner wall of the measuring tank 1; The gas communication between the measuring tank 1 and the absorption tank 3 is completed by the No. 1 air pump 4 and the No. 2 air pump 5, so that the concentration measurement and absorption operation of carbon dioxide can be separated by using the measuring tank 1 and the absorption tank 3, ensuring that the carbon dioxide can be completely isolated from the carbon dioxide absorbent after being absorbed, and at the same time avoiding the complicated operation of taking out the carbon dioxide absorbent, which is beneficial to improving the measurement accuracy of the carbon dioxide absorbent absorption capacity and reducing the operating cost of the carbon dioxide absorbent absorption capacity determination process.

[0020] Reference Figure 2 , Figures 4 to 6The inner bottom surface of the absorption tank 3 is rotatably connected with a uniform absorption component, and the uniform absorption component is used to achieve full and uniform contact between the carbon dioxide gas and the absorbent. The uniform absorption component includes a rotating shaft 8 rotatably connected to the inner bottom surface of the absorption tank 3, and the outer wall of the rotating shaft 8 is fixedly connected to a limited transfer tube 9, and the outer wall of the limited transfer tube 9 is slidably connected to a lifting sleeve 10, and the upper and lower ends of the limited transfer tube 9 are fixedly connected to limited abutment plates 28, and the outer wall of the limited transfer tube 9 is fixedly connected to two protrusions 24, and the inner wall of the lifting sleeve 10 is provided with two strip grooves 25, and the protrusions 24 match the strip grooves 25. A support frame 11 is fixedly connected to the upper position of the outer wall of the lifting sleeve 10, and two absorbent placement boxes 12 are fixedly connected to the support frame 11. The inner bottom surface of the absorption tank 3 is rotatably connected with a ball screw 13, and the ball screw 1 3 is threadedly connected with a lifting guide block 14, the inner wall of the absorption tank 3 is fixedly connected with a concave slide rail 26, the outer wall of the lifting guide block 14 is fixedly connected with a T-block 27, the end of the T-block 27 matches the inner side of the concave slide rail 26, the outer wall of the lifting guide block 14 is fixedly connected with a connecting bracket 15, the end of the connecting bracket 15 away from the lifting guide block 14 is rotatably connected to the outer wall of the lifting sleeve 10 through an annular bearing 16, the upper end surface of the absorption tank 3 is fixedly connected with a linkage driving component, the linkage driving component includes a fixed frame fixedly connected to the upper end surface of the absorption tank 3, a low-speed motor 17 is fixedly connected to the middle of the fixed frame, the output end of the low-speed motor 17 is fixedly connected to the upper end of the rotating shaft 8, the rotating shaft 8 and the outer wall of the ball screw 13 are fixedly connected with a synchronous gear 18 at the upper position, and the two synchronous gears 18 are connected through a synchronous belt 19. Reference Figure 4 A gas mixing component is fixedly connected to the lower position of the outer wall of the rotating shaft 8, and the gas mixing component includes a central gear ring 20 fixedly connected to the lower position of the outer wall of the rotating shaft 8. A plurality of rotating rods 21 are rotatably connected to the inner bottom surface of the absorption tank 3, and the outer walls of the plurality of rotating rods 21 are fixedly connected to transmission gears 22, and the plurality of transmission gears 22 are meshed with the central gear ring 20, and the upper ends of the plurality of rotating rods 21 are fixedly connected to flow stirring blades 23; By driving the rotating shaft 8, the limit transfer tube 9 and the lifting sleeve 10 to rotate, the support frame 11 is driven to rotate, so that the two absorbent placement boxes 12 on the support frame 11 can rotate in the absorption tank 3, and at the same time, the lifting guide block 14 can be driven to move up and down by driving the ball screw 13 to rotate, so that the lifting guide block 14 can drive the lifting sleeve 10 to move through the connecting bracket 15, so that the two absorbent placement boxes 12 can be lifted and moved while rotating, and at the same time, a plurality of rotating rods 21 and the stirring blades 23 at their upper ends can be driven to rotate synchronously, and the carbon dioxide in the absorption tank 3 is stirred by the fast-rotating stirring blades 23, so that the carbon dioxide in different areas of the absorption tank 3 can diffuse more quickly with each other, and the mixing uniformity of the carbon dioxide in the absorption tank 3 is improved, so that the contact degree between the carbon dioxide absorbent and the carbon dioxide gas in the absorption tank 3 can be effectively improved, and the uniformity and consistency of the contact reaction between the carbon dioxide absorbent and the carbon dioxide can be ensured, so as to further ensure the accuracy of the measurement of the absorption capacity of the carbon dioxide absorbent.

[0021] Reference Figure 1 , a method for determining the absorption capacity of a carbon dioxide absorbent, specifically comprising the following steps: S1: Measurement before absorption: Control the carbon dioxide compression tank 2 to pass a proper amount of carbon dioxide gas into the measurement tank 1, and after standing for a period of time, use a number of micro gas sensors 7 to measure the carbon dioxide gas concentration C1 before absorption; S2: Uniform absorption: The carbon dioxide gas in the measuring tank 1 is pumped into the absorption tank 3 by controlling the No. 1 air pump 4, and the pre-absorption flow rate V1 of the carbon dioxide gas is monitored and measured. The two absorbent placement boxes 12 are driven to rotate and move up and down synchronously in the absorption tank 3, and the carbon dioxide in the absorption tank 3 is uniformly mixed by driving a plurality of flow stirring blades 23 to rotate, so that the carbon dioxide absorbent can fully and uniformly contact and react with the carbon dioxide in the absorption tank 3; S3: Measurement after absorption: When the uniform absorption reaches the specified reaction time T, the carbon dioxide gas absorbed in the absorption tank 3 is completely pumped into the measurement tank 1 by controlling the No. 2 air pump 5, and the post-absorption flow rate V2 of the carbon dioxide gas is monitored and measured. It is also left to stand for a period of time, and a number of micro gas sensors 7 are used to measure the concentration C2 of the carbon dioxide gas after absorption. The absorption capacity of the carbon dioxide absorbent can be calculated by [(V1×C1 - V2×C2)×T].

[0022] The working principle of the present invention is as follows: Determination before absorption: by controlling the carbon dioxide compression tank 2 to pass a proper amount of carbon dioxide gas into the measurement tank 1, after standing for a period of time, a number of micro gas sensors 7 are used to measure the carbon dioxide gas concentration C1 before absorption; Uniform absorption: by controlling the No. 1 air pump 4 to pump all the carbon dioxide gas in the measuring tank 1 into the absorption tank 3, and monitoring and measuring the pre-absorption flow rate V1 of the carbon dioxide gas, by driving the two absorbent placement boxes 12 to rotate and move up and down in the absorption tank 3 synchronously, and by driving a plurality of stirring blades 23 to rotate, the carbon dioxide in the absorption tank 3 is uniformly mixed, so that the carbon dioxide absorbent can fully and uniformly contact and react with the carbon dioxide in the absorption tank 3; Post-absorption measurement: When the uniform absorption reaches the specified reaction time T, the carbon dioxide gas absorbed in the absorption tank 3 is completely pumped into the measurement tank 1 by controlling the second air pump 5, and the post-absorption flow rate V2 of the carbon dioxide gas is monitored and measured. Similarly, it is left to stand for a period of time, and a number of micro gas sensors 7 are used to measure the concentration C2 of the carbon dioxide gas after absorption. The absorption capacity of the carbon dioxide absorbent can be calculated by [(V1×C1 - V2×C2)×T]; During the uniform absorption process in the absorption tank 3, the low-speed motor 17 can be controlled to start, and the rotating shaft 8 and the limit transfer tube 9 can be driven to rotate by the low-speed motor 17, and the lifting sleeve 10, the support frame 11 and the two absorbent placement boxes 12 can be driven to rotate. At the same time, the transmission effect of the two synchronous gears 18 and the synchronous belt 19 can be used to drive the ball screw 13 to rotate synchronously, so that the lifting guide block 14 on the ball screw 13 can be lifted and moved. Since the connecting bracket 15 is rotatably connected to the outer wall of the lifting sleeve 10 through the annular bearing 16, the lifting guide block 14 can drive the lifting sleeve 10 to move through the connecting bracket 15, so that the two absorbent placement boxes 12 can be lifted and moved while rotating. At the same time, when the rotating shaft 8 rotates, the central bearing 16 can be used to rotate the lifting guide block 14. The meshing transmission of the center gear ring 20 and the transmission gears 22 drives the rotation of the plurality of rotating rods 21. Since the outer diameter of the center gear ring 20 is larger than that of the transmission gear 22, and the number of teeth of the center gear ring 20 is more than that of the transmission gear 22, the plurality of stirring blades 23 can achieve synchronous and rapid rotation, so as to stir the carbon dioxide in the absorption tank 3, so that the carbon dioxide in different areas of the absorption tank 3 can diffuse with each other more quickly, and the mixing uniformity of the carbon dioxide in the absorption tank 3 is improved, so as to effectively improve the contact degree between the carbon dioxide absorbent and the carbon dioxide gas in the absorption tank 3, and ensure the uniformity and consistency of the contact reaction between the carbon dioxide absorbent and the carbon dioxide, so as to further ensure the accuracy of the measurement of the absorption capacity of the carbon dioxide absorbent.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining the absorption capacity of a carbon dioxide absorbent, characterized in that The method is implemented using a device for determining the absorption capacity of a carbon dioxide absorbent, the device comprising a measuring tank (1), a carbon dioxide compression tank (2), an absorption tank (3), a first air pump (4) and a second air pump (5), the carbon dioxide compression tank (2) being connected to the measuring tank (1) via an air intake pipe, the measuring tank (1) and the absorption tank (3) being connected to two connecting pipes (6), the two connecting pipes (6) on the measuring tank (1) being connected to the air outlet of the first air pump (4) and the air inlet of the second air pump (5) respectively, the two connecting pipes (6) on the absorption tank (3) being connected to the air inlet of the first air pump (4) and the air outlet of the second air pump (5) respectively, the air inlet and the air outlet of the first air pump (4) and the second air pump (5) being both equipped with vortex flow sensors, and a plurality of micro gas sensors (7) being fixedly mounted on the inner wall of the measuring tank (1); The inner bottom surface of the absorption tank (3) is rotatably connected with a uniform absorption component, and the uniform absorption component is used to achieve full and uniform contact between the carbon dioxide gas and the absorbent.

2. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 1, characterized in that: The plurality of micro gas sensors (7) are arranged in a circular shape and at equal intervals on the inner wall of the measuring tank (1).

3. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 1, characterized in that: The uniform absorption component comprises a rotating shaft (8) rotatably connected to the inner bottom surface of the absorption tank (3); a limited position transfer tube (9) is fixedly connected to the outer wall of the rotating shaft (8); a lifting sleeve (10) is slidably connected to the outer wall of the limited position transfer tube (9); a support frame (11) is fixedly connected to the upper position of the outer wall of the lifting sleeve (10); two absorbent placement boxes (12) are fixedly connected to the support frame (11); a ball screw (13) is rotatably connected to the inner bottom surface of the absorption tank (3); a lifting guide block (14) is threadedly connected to the ball screw (13); a connecting bracket (15) is fixedly connected to the outer wall of the lifting guide block (14); an end of the connecting bracket (15) away from the lifting guide block (14) is rotatably connected to the outer wall of the lifting sleeve (10) via a ring bearing (16); a linkage driving component is fixedly connected to the upper end surface of the absorption tank (3); and a gas mixing component is fixedly connected to the lower position of the outer wall of the rotating shaft (8).

4. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 3, characterized in that: The linkage drive component comprises a fixing frame fixedly connected to the upper end surface of the absorption tank (3), a low-speed motor (17) being fixedly connected to the middle of the fixing frame, an output end of the low-speed motor (17) being fixedly connected to the upper end of the rotating shaft (8), and a synchronous gear (18) being fixedly connected to the upper position of the outer wall of the rotating shaft (8) and the ball screw (13), and the two synchronous gears (18) being connected in transmission via a synchronous belt (19).

5. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 3, characterized in that: The gas mixing component comprises a central gear ring (20) fixedly connected to the lower position of the outer wall of the rotating shaft (8); the inner bottom surface of the absorption tank (3) is rotatably connected to a plurality of rotating rods (21); the outer walls of the plurality of rotating rods (21) are fixedly connected to transmission gears (22); the plurality of transmission gears (22) are meshed with the central gear ring (20); and the upper ends of the plurality of rotating rods (21) are fixedly connected to flow stirring blades (23).

6. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 3, characterized in that: The outer wall of the position-limiting transfer tube (9) is fixedly connected with two protrusions (24), and the inner wall of the lifting sleeve (10) is provided with two strip-shaped grooves (25), and the protrusions (24) match the strip-shaped grooves (25).

7. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 3, characterized in that: The inner wall of the absorption tank (3) is fixedly connected with a concave slide rail (26), and the outer wall of the lifting guide block (14) is fixedly connected with a T-shaped block (27), and the end of the T-shaped block (27) matches the inner side of the concave slide rail (26).

8. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 3, characterized in that: The upper and lower ends of the limit transfer tube (9) are fixedly connected with limit abutment plates (28).

9. A method for determining the absorption capacity of a carbon dioxide absorbent according to claim 5, characterized in that: The specific steps include: S1: Measurement before absorption: Control the carbon dioxide compression tank (2) to pass an appropriate amount of carbon dioxide gas into the measurement tank (1), and after standing for a preset time, use the micro gas sensor (7) to measure the carbon dioxide gas concentration C1 before absorption; S2: Uniform absorption: Controlling the No. 1 air pump (4) to pump all the carbon dioxide gas in the measuring tank (1) into the absorption tank (3), and monitoring and measuring the pre-absorption flow rate V1 of the carbon dioxide gas, driving the two absorbent placement boxes (12) to rotate and move up and down in the absorption tank (3) synchronously, and driving a plurality of stirring blades (23) to rotate to uniformly mix all the carbon dioxide in the absorption tank (3), so that the carbon dioxide absorbent can fully and uniformly contact and react with the carbon dioxide in the absorption tank (3); S3: Measurement after absorption: When the uniform absorption reaches the specified reaction time T, the second air pump (5) is controlled to completely pump the absorbed carbon dioxide gas in the absorption tank (3) into the measurement tank (1), and the post-absorption flow rate V2 of the carbon dioxide gas is monitored and measured. It is also left to stand for a preset time, and a number of micro gas sensors (7) are used to measure the concentration C2 of the carbon dioxide gas after absorption. The absorption capacity of the carbon dioxide absorbent can be calculated by [(V1×C1 - V2×C2)×T].

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