Carbon capture device for cooling flue gas by using solar energy

Abstract

The utility model discloses a kind of carbon capture device for flue gas cooling using solar energy, including commercial power complementary solar power generation system, flue gas cooling mechanism and carbon dioxide capture tower, the flue gas cooling mechanism includes water tank, the outer wall of the water tank is fixed and is provided with a plurality of heat exchange straight pipes, the both ends of the water tank are respectively fixedly connected with smoke inlet joint and smoke outlet joint;The utility model in use, flue gas enters each heat exchange straight pipe, and exchanges heat with cooling liquid in water tank, by starting water pump and fan, water pump can extract cooling liquid in water tank and pump to the spraying mechanism in cover shell, so that cooling liquid is sprayed in cover shell and along the inner wall of each vertical flat tube reflows into water tank, fan can make external air pass through square tube quickly, to cooling liquid flowing downward in vertical flat tube is cooled, to ensure that water in water tank always remains lower stability, compared with semiconductor refrigeration technology is more practical.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically a carbon capture device that uses solar energy to cool flue gas. Background Technology

[0002] Carbon dioxide emissions significantly impact climate change, with over 40% of CO2 emitted by fossil fuel power plants. Therefore, there is increasing attention being paid to how to capture CO2 from power plant exhaust gases (flue gas) in a more economical way.

[0003] A search revealed that patent CN219964443U discloses a carbon capture system that uses solar energy to cool flue gas. By comprehensively utilizing photovoltaic power generation technology and semiconductor refrigeration technology, it uses solar energy to cool flue gas, reducing the energy consumption or water consumption in traditional cooling methods. Low-temperature flue gas is conducive to improving the carbon capture efficiency of carbon capture absorbents, further reducing carbon emissions during the carbon capture process.

[0004] While the above-mentioned solution utilizes photovoltaic power generation technology to provide electricity for the thermoelectric cooler, thus achieving the cooling of flue gas, in actual use, to ensure the normal operation of the thermoelectric cooler, effective heat dissipation measures must be implemented at the hot end when using its cold end for cooling. The heat that needs to be dissipated includes the heat released by the Parnell effect and the Joule heat generated by the cooler itself, and this part of the heat is much greater than the heat absorbed by the cold end. Therefore, most of the electricity generated by photovoltaic power generation needs to be used for heat dissipation of the thermoelectric cooler itself to ensure the cooling effect of the thermoelectric cooler on the flue gas, resulting in a large amount of electricity being wasted. Furthermore, although the solution extends the cooling time of the thermoelectric cooler on the flue gas by using a serpentine bend, the dust in the flue gas is not easy to clean after adhering to the inside of the serpentine bend. Utility Model Content

[0005] The purpose of this invention is to provide a carbon capture device that uses solar energy to cool flue gas, in order 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 carbon capture device for cooling flue gas using solar energy includes a grid-coupled solar power system, a flue gas cooling mechanism, and a carbon dioxide capture tower. The flue gas cooling mechanism includes a water tank with several heat exchange straight pipes fixedly inserted through its outer wall. A flue gas inlet and outlet are fixedly connected to both ends of the water tank. The two ends of the heat exchange straight pipes are connected to the flue gas inlet and outlet, respectively. A square tube is fixedly installed on the top of the water tank, and a cover is fixedly installed on the top of the square tube. A vertical flat tube is fixedly connected inside the square tube, with its bottom end connected to the water tank and its top end connected to the cover. A spray mechanism is installed inside the cover. A water pump is connected to the bottom of the outer wall of the water tank, and the outlet of the water pump is connected to the spray mechanism. A fan is installed at the air outlet of the square tube. Both the water pump and the fan are electrically connected to the grid-coupled solar power system.

[0008] As a further aspect of this utility model: the water tank is filled with coolant, and the heat exchange straight pipes are all located below the surface of the coolant.

[0009] As a further embodiment of this utility model: the inlet joint is connected to the flue gas conveying pipeline, and the outlet joint is connected to the inlet pipe of the carbon dioxide capture tower.

[0010] As a further embodiment of this utility model: a protective net is installed at the air outlet of the fan, and a dustproof net is installed at the air inlet of the square tube.

[0011] As a further embodiment of this utility model: a water suction pipe is provided through the bottom of the outer wall of the water tank, and one end of the water suction pipe located outside the water tank is connected to the water inlet of the water pump. The spraying mechanism includes a water supply pipe fixedly installed inside the housing. Multiple spray pipes are fixedly connected to the outer wall of the water supply pipe. Multiple nozzles are installed at the bottom of each spray pipe. The water inlet of the water supply pipe passes through the housing and is connected to the water outlet of the water pump through a connecting pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In use, the flue gas enters each heat exchange straight tube and exchanges heat with the coolant in the water tank. By starting the water pump and fan, the water pump can draw out the coolant in the water tank and pump it to the spray mechanism inside the casing, so that the coolant is sprayed out inside the casing and flows down the inner wall of each vertical flat tube back into the water tank. The fan can make the outside air pass through the square tube quickly to cool the coolant flowing down the vertical flat tube, thereby ensuring that the water in the water tank always remains at a low and stable temperature. Compared with semiconductor refrigeration technology, it is more practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a carbon capture device that uses solar energy to cool flue gas.

[0015] Figure 2 for Figure 1 A sectional view.

[0016] Figure 3 This is a schematic diagram of the distribution structure of vertical flat tubes in a carbon capture device that uses solar energy to cool flue gas.

[0017] The components include: water tank 1, heat exchange straight pipe 2, smoke inlet connector 3, smoke outlet connector 4, square pipe 5, vertical flat pipe 6, fan 7, protective net 8, dustproof net 9, cover 10, water supply pipe 11, spray pipe 12, nozzle 13, water extraction pipe 14, water pump 15, and connecting pipe 16. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Please see Figures 1-3In this embodiment of the invention, a carbon capture device for cooling flue gas using solar energy includes a grid-coupled solar power generation system, a flue gas cooling mechanism, and a carbon dioxide capture tower. The flue gas cooling mechanism includes a water tank 1, with several heat exchange straight pipes 2 fixedly installed on the outer wall of the water tank 1. Coolant is provided inside the water tank 1, and the heat exchange straight pipes 2 are all located below the surface of the coolant. A flue gas inlet connector 3 and a flue gas outlet connector 4 are fixedly connected to both ends of the water tank 1 via flanges. The two ends of the heat exchange straight pipes 2 are connected to the flue gas inlet connector 3 and the flue gas outlet connector 4, respectively. A square tube 5 is fixedly installed on the top of the water tank 1. A cover 10 is fixedly installed on the top of the square tube 5. A vertical flat tube 6 is fixedly connected inside the square tube 5. The bottom end of the vertical flat tube 6 is connected to the water tank 1, and the top end of the vertical flat tube 6 is connected to the cover 10. A spraying mechanism is provided inside the cover 10. A water pump 15 is connected to the bottom of the outer wall of the water tank 1. The water outlet of the water pump 15 is connected to the spraying mechanism. A fan 7 is installed at the air outlet of the square tube 5. Both the water pump 15 and the fan 7 are electrically connected to the grid-connected solar power generation system. The smoke inlet connector 3 is connected to the flue gas conveying pipeline, and the smoke outlet connector 4 is connected to the smoke inlet pipe of the carbon dioxide capture tower.

[0023] By adopting the above-mentioned scheme, in use, the flue gas in the flue gas conveying pipeline enters each heat exchange straight pipe 2 through the flue gas inlet connector 3 and exchanges heat with the coolant in the water tank 1 to cool the flue gas. Then, the flue gas is uniformly fed into the carbon dioxide capture tower through the flue gas outlet connector 4 to capture the carbon dioxide in the flue gas. By starting the water pump 15 and the fan 7, the water pump 15 can draw out the coolant in the water tank 1 and pump it to the spray mechanism in the cover 10, so that the coolant is sprayed out in the cover 10 and flows down into the water tank 1 along the inner wall of each vertical flat pipe 6. The fan 7 can make the outside air pass through the square pipe 5 quickly to cool the coolant flowing down in the vertical flat pipe 6, thereby ensuring that the water in the water tank 1 always remains at a low and stable temperature. This is more practical than semiconductor refrigeration technology.

[0024] Specific combination Figure 2 In one embodiment of this utility model, a protective net 8 is installed at the air outlet of the fan 7 to provide protection and prevent foreign objects from contacting the fan blades of the fan 7. A dustproof net 9 is installed at the air inlet of the square tube 5 to reduce the amount of dust entering the square tube 5.

[0025] Specific combination Figure 1 and Figure 2In one embodiment of this utility model, a water suction pipe 14 is provided through the bottom of the outer wall of the water tank 1. One end of the water suction pipe 14 located outside the water tank 1 is connected to the water inlet of the water pump 15. The spraying mechanism includes a water supply pipe 11 fixedly installed inside the cover 10. Multiple spray pipes 12 are fixedly connected to the outer wall of the water supply pipe 11. Multiple nozzles 13 are installed at the bottom of each spray pipe 12. The water inlet of the water supply pipe 11 passes through the cover 10 and is connected to the water outlet of the water pump 15 through a connecting pipe 16.

[0026] When the water pump 15 is started, the coolant in the water tank 1 can be drawn out through the water pumping pipe 14 and pumped into the water supply pipe 11 through the connecting pipe 16. Then the coolant will enter each spray pipe 12 and be sprayed out by each nozzle 13.

[0027] Furthermore, in one embodiment of this utility model, the mains-powered complementary solar power generation system consists of solar panels, a solar controller, a battery, an inverter, and a mains-powered intelligent switch. When the solar panels receive sunlight, they supply power to the water pump 15 and the fan 7, and use the excess power to charge the battery. When there is a lack of sunlight, the battery supplies power to the water pump 15 and the fan 7. When there is a lack of sunlight and the battery power is insufficient, the mains power is switched to supply power to the fan 7 and the water pump 15 to ensure the stable operation of the flue gas cooling mechanism.

[0028] 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 carbon capture device that utilizes solar energy to cool flue gas, characterized in that: The system includes a grid-connected solar power generation system, a flue gas cooling mechanism, and a carbon dioxide capture tower. The flue gas cooling mechanism includes a water tank (1), with several heat exchange straight pipes (2) fixedly installed on the outer wall of the water tank (1). Both ends of the water tank (1) are respectively connected to a flue gas inlet connector (3) and a flue gas outlet connector (4). Both ends of the heat exchange straight pipes (2) are connected to the flue gas inlet connector (3) and the flue gas outlet connector (4). A square tube (5) is fixedly installed on the top of the water tank (1), and a cover is fixedly installed on the top of the square tube (5). 10) A vertical flat tube (6) is fixedly connected inside the square tube (5). The bottom end of the vertical flat tube (6) is connected to the water tank (1). The top end of the vertical flat tube (6) is connected to the cover (10). A spraying mechanism is provided inside the cover (10). A water pump (15) is connected to the bottom of the outer wall of the water tank (1). The water outlet of the water pump (15) is connected to the spraying mechanism. A fan (7) is installed at the air outlet of the square tube (5). The water pump (15) and the fan (7) are both electrically connected to the mains-powered complementary solar power generation system.

2. The carbon capture device for cooling flue gas using solar energy according to claim 1, characterized in that: The water tank (1) is filled with coolant, and the heat exchange straight pipes (2) are all located below the surface of the coolant.

3. A carbon capture device for cooling flue gas using solar energy according to claim 1, characterized in that: The inlet joint (3) is connected to the flue gas conveying pipeline, and the outlet joint (4) is connected to the inlet pipe of the carbon dioxide capture tower.

4. A carbon capture device for cooling flue gas using solar energy according to claim 1, characterized in that: The air outlet of the fan (7) is equipped with a protective net (8), and the air inlet of the square tube (5) is equipped with a dustproof net (9).

5. A carbon capture device for cooling flue gas using solar energy according to claim 1, characterized in that: A water pump pipe (14) is installed through the bottom of the outer wall of the water tank (1). One end of the water pump pipe (14) located outside the water tank (1) is connected to the water inlet of the water pump (15). The spraying mechanism includes a water supply pipe (11) fixedly installed inside the cover (10). Multiple spray pipes (12) are fixedly connected to the outer wall of the water supply pipe (11). Multiple nozzles (13) are installed at the bottom of each spray pipe (12). The water inlet of the water supply pipe (11) passes through the cover (10) and is connected to the water outlet of the water pump (15) through a connecting pipe (16).

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