Solar-driven carbon dioxide trapping tower

Abstract

The utility model discloses a solar-driven carbon dioxide trapping tower which comprises a trapping tower body, a gas outlet is formed in the top of the trapping tower body, a gas inlet is formed in the position, close to the bottom end, of the outer wall of the trapping tower body, and a water drainage pipe is arranged on the outer wall, located below the gas inlet, of the trapping tower body. A plurality of packing boxes are fixedly mounted on the inner wall, above the gas inlet, of the trapping tower from bottom to top, and a spraying pipe is fixedly mounted on the inner wall of the trapping tower; according to the utility model, when the filler in the filler box needs to be replaced, after the plug of the discharge pipe is opened, the centrifugal pushing mechanism is started to push the filler in the filler box to move towards the inner peripheral wall of the filler box, so that the filler in the filler box is discharged from the discharge pipe, then the discharge pipe is plugged again, and new filler is filled into the filler box through the feeding pipe; after entering the packing box, the packing can be pushed to the inner peripheral wall of the packing box by the pushing mechanism, so that the packing box is filled with the packing from outside to inside to complete the replacement of the packing, and the packing box is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide capture technology, specifically a solar-powered carbon dioxide capture tower. Background Technology

[0002] There are three main methods for carbon dioxide capture: 1. Absorption; 2. Adsorption; 3. Membrane separation. Absorption utilizes the acidic nature of carbon dioxide to react chemically with weakly alkaline substances, decomposing it into carbon dioxide gas. However, this method is difficult to apply to low-concentration CO2 absorption and requires a stronger driving force to drive the capture liquid to absorb CO2. Adsorption uses solid adsorbents to adsorb CO2, but this method has a limited adsorption capacity and poor selectivity, mainly relying on temperature or pressure differences for CO2 absorption. Membrane separation uses polymeric materials such as polyimide and cellulose acetate to create membranes, utilizing the different permeabilities of the membrane to separate different gases. The separation is driven by the pressure difference across the membrane, but this method has poor separation efficiency, especially for low concentrations of atmospheric CO2 (350-450 ppm / ml). 3 It is difficult to absorb efficiently.

[0003] A search revealed that patent CN212327862U discloses a solar-driven carbon dioxide capture tower. This tower utilizes a hyperbolic column to increase atmospheric velocity. Based on the chimney effect, a solar-absorbing coating is applied to the outer wall of the tower, raising its temperature and transferring heat to the air inside. This temperature difference between the tower and the outside air further increases the air velocity, thereby improving the mass transfer efficiency between CO2 and the capture liquid. A pressurized nozzle assembly transforms the lean capture liquid into droplets, increasing its specific surface area. Multiple layers of packing provide the necessary environment for capture and catalyze the process.

[0004] While the above scheme can effectively capture carbon dioxide in the atmosphere, the packing material used to capture carbon dioxide is not easy to unload and replenish after it becomes saturated, and needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide a solar-powered carbon dioxide capture tower to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A solar-powered carbon dioxide capture tower includes a capture tower with an outlet at the top and an inlet near the bottom of its outer wall. A drain pipe is located on the outer wall below the inlet. Multiple packing boxes are fixedly installed from bottom to top on the inner wall above the inlet. A spray pipe with multiple nozzles is fixedly installed on the inner wall of the capture tower. The packing boxes are all located below the spray pipe. A discharge pipe is fixedly inserted through the bottom of the outer peripheral wall of each packing box, and a second valve is installed on the discharge pipe. The discharge end of the discharge pipe extends outside the capture tower. A feeding pipe is fixedly inserted through the top of each packing box near its center, and the inlet end of the feeding pipe extends outside the capture tower. A feeding mechanism is located outside the capture tower, and the inlet ends of the feeding pipes are all connected to the feeding mechanism.

[0008] As a further embodiment of this utility model: the feeding mechanism includes a cylinder, a hopper is fixedly connected to the bottom of the outer wall of the cylinder, and a feed inlet communicating with the hopper is opened at the bottom of the outer wall of the cylinder. An auger is rotatably installed inside the cylinder, a second reduction motor is fixedly installed at the top of the cylinder, the output shaft of the second reduction motor is fixedly connected to the top of the auger, and the feed end of the feeding pipe is connected to the outer peripheral wall of the cylinder.

[0009] As a further embodiment of this utility model: a first valve is installed on each of the feeding pipes, a second valve is installed on each of the discharge pipes, a discharge cylinder is provided on the outside of the collection tower, and the discharge end of each discharge pipe is connected to the outer peripheral wall of the discharge cylinder.

[0010] As a further embodiment of this utility model: the centrifugal pushing mechanism includes a first reduction motor fixedly installed at the center of the top of the packing box, and the output shaft of the first reduction motor passes through the packing box and is fixedly sleeved with an impeller.

[0011] As a further aspect of this invention: the outer wall of the collection tower is provided with a solar energy absorption coating for heating the gas inside the collection tower.

[0012] As a further improvement of this utility model, a fan is fixedly installed inside the air outlet.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, when the packing in the packing box needs to be replaced, after opening the plug of the discharge pipe, the centrifugal pushing mechanism is activated to push the packing in the packing box towards the inner circumferential wall of the packing box, so as to discharge the packing in the packing box through the discharge pipe. Then, the discharge pipe is plugged again, and new packing is filled into the packing box through the feeding pipe. After the packing re-enters the packing box, it will be pushed towards the inner circumferential wall of the packing box by the pushing mechanism, so as to fill the packing box from the outside to the inside, thereby completing the replacement of the packing and making it more convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a solar-powered carbon dioxide capture tower.

[0016] Figure 2 This is a schematic diagram of the feeding mechanism in a solar-powered carbon dioxide capture tower.

[0017] Figure 3 This is a schematic diagram of the impeller in a solar-powered carbon dioxide capture tower.

[0018] The components include: 1. Collection tower; 2. Air inlet; 3. Air outlet; 4. Spray pipe; 5. Spray head; 6. Drain pipe; 7. Packing box; 8. First geared motor; 9. Impeller; 10. Cylinder; 11. Hopper; 12. Second geared motor; 13. Screwdriver; 14. Feeding pipe; 15. First valve; 16. Discharge pipe; 17. Second valve; 18. Discharge cylinder; and 19. Fan. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation in the specification, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0023] Please see Figures 1-3 In this embodiment of the present invention, a solar-driven carbon dioxide capture tower includes a capture tower 1. The outer wall of the capture tower 1 is coated with a solar absorption coating for heating the gas inside the capture tower 1. An outlet 3 is located at the top of the capture tower 1. An inlet 2 is located near the bottom of the outer wall of the capture tower 1. A drain pipe 6 is located on the outer wall of the capture tower 1 below the inlet 2. Multiple packing boxes 7 are fixedly installed from bottom to top on the inner wall of the capture tower 1 above the inlet 2. Several vent holes are provided through the top and bottom of each packing box 7. A spray pipe 4 is fixedly installed on the inner wall of the collecting tower 1. Multiple nozzles 5 are installed on the spray pipe 4. The packing box 7 is located below the spray pipe 4. A discharge pipe 16 is fixedly installed through the bottom of the outer peripheral wall of the packing box 7. A second valve 17 is installed on the discharge pipe 16. The discharge end of the discharge pipe 16 extends to the outside of the collecting tower 1. A feeding pipe 14 is fixedly installed through the top of the packing box 7 near the center. The inlet end of the feeding pipe 14 extends to the outside of the collecting tower 1. A feeding mechanism is provided outside the collecting tower 1. The inlet end of the feeding pipe 14 is connected to the feeding mechanism.

[0024] By adopting the above-mentioned scheme, in use, outside air enters the collection tower 1 through the air inlet 2 and exits through the air outlet 3 of the collection tower 1. During this process, the collection liquid is sprayed into the tower through the nozzle 5, and the carbon dioxide in the air can be captured by the collection liquid and the packing in the packing box 7. The collection liquid collected at the bottom of the collection tower 1 is discharged through the drain pipe 6. When the packing in the packing box 7 needs to be replaced, after opening the seal of the discharge pipe 16, the centrifugal pushing mechanism can be activated to push the packing in the packing box 7 to move towards the inner peripheral wall of the packing box 7, so that the packing in the packing box 7 can be discharged from the discharge pipe 16. After that, the discharge pipe 16 is sealed again, and new packing is filled into the packing box 7 through the feeding pipe 14. After the packing re-enters the packing box 7, it will be pushed towards the inner peripheral wall of the packing box 7 by the pushing mechanism, so that the packing box 7 is filled from the outside to the inside, thus completing the replacement of the packing. This makes it more convenient to use.

[0025] Specific combination Figure 1 and Figure 2In one embodiment of the present invention, the feeding mechanism includes a cylinder 10, a hopper 11 is fixedly connected to the bottom of the outer wall of the cylinder 10, and an inlet communicating with the hopper 11 is provided at the bottom of the outer wall of the cylinder 10. An auger 13 is rotatably installed inside the cylinder 10. A second reduction motor 12 is fixedly installed at the top of the cylinder 10. The output shaft of the second reduction motor 12 is fixedly connected to the top of the auger 13. The inlet end of the feeding pipe 14 is connected to the outer peripheral wall of the cylinder 10.

[0026] After the new packing is placed into the hopper 11, the second reduction motor 12 is started to drive the auger 13 to rotate, which can lift the packing inside the cylinder 10, so that the packing is discharged into the packing box 7 through the feeding pipe 14.

[0027] Specific combination Figure 3 In one embodiment of this utility model, the centrifugal pushing mechanism includes a first reduction motor 8 fixedly installed at the top center of the packing box 7. The output shaft of the first reduction motor 8 passes through the packing box 7 and is fixedly sleeved with an impeller 9. After the first reduction motor 8 is started to drive the impeller 9 to rotate, the impeller 9 can be used to push the packing to move towards the inner peripheral wall of the packing box.

[0028] Specific combination Figure 1 and Figure 2 In one embodiment of this utility model, a first valve 15 is installed on each of the feeding pipes 14, and a second valve 17 is installed on each of the discharge pipes 16. The first valve 15 and the second valve 17 facilitate the control of the opening and closing of each feeding pipe 14 and discharge pipe 16. The first valve 15 and the second valve 17 are preferably electrically controlled gate valves or butterfly valves. A discharge cylinder 18 is provided on the outside of the collection tower 1. The discharge end of each discharge pipe 16 is connected to the outer peripheral wall of the discharge cylinder 18. The discharge cylinder 18 enables the uniform discharge of the packing material discharged from each discharge pipe 16. Therefore, the discharged packing material can be collected simply by placing the container used to transport the packing material below the bottom of the discharge cylinder 18.

[0029] Specific combination Figure 1 In one embodiment of this utility model, a fan 19 is fixedly installed inside the air outlet 3 to further increase the outward flow speed of air inside the collection tower 1 after the fan 19 is turned on.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A solar powered carbon dioxide capture tower characterized by: The application relates to a gas collecting tower, which comprises a collecting tower (1), a gas outlet (3) arranged at the top of the collecting tower (1), an air inlet (2) arranged on the outer wall of the collecting tower (1) near the bottom end, a drain pipe (6) arranged on the outer wall of the collecting tower (1) below the air inlet (2), a plurality of filler boxes (7) fixedly arranged on the inner wall of the collecting tower (1) above the air inlet (2) from bottom to top, a spraying pipe (4) fixedly arranged on the inner wall of the collecting tower (1), a plurality of spray heads (5) arranged on the spraying pipe (4), the filler boxes (7) being arranged below the spraying pipe (4), a discharge pipe (16) fixedly penetrating through the bottom of the outer wall of the filler box (7), a second valve (17) arranged on the discharge pipe (16), the discharge end of the discharge pipe (16) penetrating out of the collecting tower (1), a feeding pipe (14) fixedly penetrating through the top of the filler box (7) near the center, the feeding end of the feeding pipe (14) penetrating out of the collecting tower (1), a feeding mechanism arranged outside the collecting tower (1), the feeding end of the feeding pipe (14) being communicated with the feeding mechanism, and a centrifugal pushing mechanism arranged on the filler box (7).

2. A solar powered carbon dioxide capture tower according to claim 1, wherein: The feeding mechanism comprises a cylinder (10), a material bin (11) fixedly connected to the bottom end of the outer wall of the cylinder (10), a feeding port communicated with the material bin (11) arranged on the bottom end of the outer wall of the cylinder (10), a screw (13) rotatably arranged in the cylinder (10), a second speed reducer (12) fixedly arranged at the top end of the cylinder (10), and an output shaft of the second speed reducer (12) fixedly connected with the top end of the screw (13), the feeding end of the feeding pipe (14) being communicated with the outer wall of the cylinder (10).

3. A solar powered carbon dioxide capture tower according to claim 1, wherein: First valves (15) are arranged on the feeding pipe (14), second valves (17) are arranged on the discharge pipe (16), and a discharge cylinder (18) is arranged outside the collecting tower (1), the discharge end of the discharge pipe (16) being communicated with the outer wall of the discharge cylinder (18).

4. A solar powered carbon dioxide capture tower according to claim 1, wherein: The centrifugal pushing mechanism comprises a first speed reducer (8) fixedly arranged at the top center of the filler box (7), and an impeller (9) fixedly sleeved on the output shaft of the first speed reducer (8) penetrating into the filler box (7).

5. A solar powered carbon dioxide capture tower according to claim 1, wherein: The outer wall of the collecting tower (1) is provided with a solar energy absorption coating for heating the gas in the collecting tower (1).

6. A solar powered carbon dioxide capture tower according to claim 1, wherein: A fan (19) is fixedly arranged in the gas outlet (3).

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