Carbon capture circular treatment equipment

Abstract

The utility model discloses carbon capture circulation treatment equipment, including flue gas cooler, smoke outlet pipe and capture liquid preheater, the gas inlet end of flue gas cooler is communicated with flue gas delivery pipeline, the gas outlet end of flue gas cooler is communicated with the smoke inlet pipe of capture tower through pipeline, the top end of capture tower is provided with smoke outlet pipe, and the smoke outlet pipe is communicated with the capture liquid preheater. A packing box and a spray pipe are arranged in the trapping tower from bottom to top, a plurality of spray heads are mounted on the spray pipe, a drain pipe is fixedly arranged at the bottom of the outer wall of the trapping tower in a penetrating manner, and the drain pipe is communicated with a trapping liquid preheater through a water pump and a pipeline; by arranging the flue gas cooler, the trapping liquid preheater and the like, high-temperature cooling liquid output by the first water outlet connector of the flue gas cooler enters the trapping liquid preheater through the connecting pipe so as to preheat a liquid amine solution passing through the trapping liquid preheater, so that efficient utilization of flue gas waste heat is realized; and the energy consumption of carbon dioxide capture is reduced.

Description

Technical Field

[0001] This utility model relates to the field of carbon capture technology, specifically a carbon capture and recycling treatment device. Background Technology

[0002] Carbon dioxide emissions significantly impact climate change, with over 40% of CO2 emissions coming from fossil fuel power plants. Therefore, making it economically viable to capture CO2 from power plant exhaust gases (flue gas) is one of the major challenges of our time.

[0003] A search revealed that patent CN220071226U discloses a carbon capture and recycling processor, which can conveniently cool high-temperature flue gas through a heat recovery structure, allowing for the recovery and utilization of waste heat from the high-temperature flue gas, resulting in good performance. This application has a purification structure, which can conveniently absorb and treat carbon dioxide in the flue gas, and the treatment is relatively thorough, resulting in good performance and making it suitable for widespread application.

[0004] While the above-mentioned scheme can recover the waste heat of flue gas in actual use, it does not mention how to reuse it. Storing the recovered heat would result in significant losses. Secondly, liquid amine diluted with water is commonly used as a carbon dioxide capture agent. However, the temperature of the liquid amine enriched with carbon dioxide is low, and it needs to be reheated to above 110°C in the regeneration tower to release the captured CO2 for storage and utilization. The regenerated amine is sent back to the absorption tower for repeated carbon dioxide capture. The regeneration tower requires a lot of energy to heat and regenerate the low-temperature liquid amine. Therefore, we propose a carbon capture and recycling treatment device that can utilize the waste heat of flue gas to preheat the liquid amine enriched with carbon dioxide. Utility Model Content

[0005] The purpose of this invention is to provide a carbon capture and recycling device 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 and recycling treatment device includes a flue gas cooler, a flue gas outlet pipe, and a capture liquid preheater. The inlet end of the flue gas cooler is connected to a flue gas conveying pipeline, and the outlet end of the flue gas cooler is connected to the inlet pipe of a capture tower via a pipeline. The top of the capture tower is provided with a flue gas outlet pipe. A packing box and a spray pipe are arranged from bottom to top inside the capture tower. Several nozzles are installed on the spray pipe. A drain pipe is fixedly installed through the bottom of the outer wall of the capture tower. The drain pipe is connected to the capture liquid preheater via a water pump and a pipeline. The flue gas cooler is provided with a first water inlet and a first water outlet for conveying coolant. The capture liquid preheater is provided with a second water inlet and a second water outlet. The first water inlet is connected to the output pipe of an industrial chiller via a pipeline. The first water outlet is connected to the second water inlet via a connecting pipe. The second water outlet is connected to the return pipe of the industrial chiller via a pipeline.

[0008] As a further embodiment of this utility model: the flue gas cooler includes a shell, the two ends of the shell are respectively connected to the flue gas conveying pipe and the flue gas inlet pipe, two partitions are fixedly installed inside the shell, the two partitions form a water-cooled chamber inside the shell, the first water inlet and the first water outlet are both connected to the water-cooled chamber, and multiple heat exchange straight pipes are sealed through the two partitions, through which the flue gas passes.

[0009] As a further embodiment of this utility model: the preheater for collecting liquid includes a cylinder, the second water inlet and the second water outlet are both connected to the interior of the second water inlet, both ends of the cylinder are fixedly connected to end plates, a heat exchange coil is provided inside the cylinder, both ends of the heat exchange coil pass through the corresponding end plates, and one end of the heat exchange coil is connected to a water pump.

[0010] As a further embodiment of this utility model: one end of the smoke inlet pipe located inside the collection tower is fixedly connected to an annular pipe, and the outer wall of the annular pipe is provided with multiple air outlet holes.

[0011] As a further improvement of this invention: the liquid level of the collecting liquid at the bottom of the collecting tower is located between the annular pipe and the packing box.

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

[0013] This invention, by setting up a flue gas cooler and a preheater for the capture liquid, allows the high-temperature coolant output from the first outlet of the flue gas cooler to enter the preheater for the capture liquid through a connecting pipe, thereby preheating the liquid amine solution passing through the preheater. This achieves efficient utilization of the waste heat from the flue gas and reduces the energy consumption of carbon dioxide capture. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a carbon capture and recycling treatment device.

[0015] Figure 2 This is a schematic diagram of the structure of a flue gas cooler in a carbon capture and recycling treatment device.

[0016] Figure 3 This is a schematic diagram of the structure of a preheater for the capture liquid in a carbon capture and recycling treatment device.

[0017] The components include: flue gas conveying pipe 1, flue gas cooler 2, shell 3, baffle 4, water-cooled chamber 5, heat exchange straight pipe 6, first water inlet 7, first water outlet 8, collection tower 9, flue gas inlet pipe 10, annular pipe 11, air outlet 12, packing box 13, spray pipe 14, nozzle 15, flue gas outlet pipe 16, drain pipe 17, water pump 18, cylinder 19, end plate 20, heat exchange coil 21, second water inlet 22, second water outlet 23, collection liquid preheater 24, and connecting pipe 25. 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 present invention, a carbon capture and recycling treatment device includes a flue gas cooler 2, a flue gas outlet pipe 16, and a capture liquid preheater 24. The inlet end of the flue gas cooler 2 is connected to a flue gas conveying pipeline 1, and the outlet end of the flue gas cooler 2 is connected to the flue gas inlet pipe 10 of the capture tower 9 through a pipeline. The top of the capture tower 9 is provided with a flue gas outlet pipe 16. A packing box 13 and a spray pipe 14 are arranged from bottom to top inside the capture tower 9. Several nozzles 15 are installed on the spray pipe 14. A drainage channel is fixedly installed through the bottom of the outer wall of the capture tower 9. Pipe 17, the drain pipe 17 is connected to the preheater 24 of the collecting liquid through a water pump 18 and a pipeline. The flue gas cooler 2 is provided with a first water inlet 7 and a first water outlet 8 for conveying coolant. The preheater 24 of the collecting liquid is provided with a second water inlet 22 and a second water outlet 23. The first water inlet 7 is connected to the output pipe of the industrial chiller through a pipeline. The first water outlet 8 is connected to the second water inlet 22 through a connecting pipe 25. The second water outlet 23 is connected to the return pipe of the industrial chiller through a pipeline.

[0023] By adopting the above-mentioned scheme, in use, high-temperature flue gas enters the flue gas cooler 2 through the flue gas conveying pipe 1. After being cooled by the coolant output from the industrial chiller, it enters the collection tower 9 through the inlet pipe 10 and is discharged through the outlet pipe 16. The nozzles 15 in the collection tower 10 spray atomized liquid amine solution to absorb carbon dioxide in the flue gas. The liquid amine solution enriched with carbon dioxide at the bottom of the collection tower 10 is pumped into the collection liquid preheater 24 by the water pump 18, and then enters the regeneration tower through the output pipe of the collection liquid preheater 24. The high-temperature coolant output from the first water outlet 8 of the flue gas cooler 2 enters the collection liquid preheater 24 through the connecting pipe 25 to preheat the liquid amine solution passing through the collection liquid preheater 24, thereby achieving efficient utilization of the waste heat of the flue gas and reducing the energy consumption of carbon dioxide capture.

[0024] Specific combination Figure 2 In one embodiment of this utility model, the flue gas cooler 2 includes a housing 3. The two ends of the housing 3 are respectively connected to the flue gas conveying pipe 1 and the flue gas inlet pipe 10. Two partitions 4 are fixedly installed inside the housing 3. The two partitions 4 form a water-cooled chamber 5 inside the housing 3. The first water inlet 7 and the first water outlet 8 are both connected to the water-cooled chamber 5. Multiple heat exchange straight pipes 6 are sealed through the two partitions 4. The flue gas passes through the heat exchange straight pipes 6.

[0025] After the coolant enters the water-cooled chamber 5 through the first water inlet 7, it will come into contact with each heat exchange straight tube 6 to exchange heat with the flue gas passing through the heat exchange straight tube 6, thereby realizing the recovery of waste heat from the flue gas.

[0026] Specific combination Figure 3In one embodiment of this utility model, the preheater 24 for collecting liquid includes a cylinder 19. The second water inlet 22 and the second water outlet 23 are both connected to the interior of the second water inlet 22. Both ends of the cylinder 19 are fixedly connected to end plates 20. A heat exchange coil 21 is provided inside the cylinder 19. Both ends of the heat exchange coil 21 pass through the corresponding end plates 20. One end of the heat exchange coil 21 is connected to a water pump 18, and the other end of the heat exchange coil 21 is connected to a regeneration tower through a pipe.

[0027] After the high-temperature coolant enters the cylinder 19 through the second water inlet 22, it will exchange heat with the liquid amine solution in the heat exchange coil 21, thus realizing the utilization of the waste heat of the flue gas.

[0028] Specific combination Figure 1 In one embodiment of the present invention, the end of the smoke inlet pipe 10 located inside the collection tower 9 is fixedly connected to an annular pipe 11. The outer wall of the annular pipe 11 is provided with a plurality of air outlet holes 12. The liquid level of the collection liquid at the bottom of the collection tower 9 is located between the annular pipe 11 and the packing box 13.

[0029] By setting up the annular pipe 11 and the air outlet 12, the flue gas discharged from the flue gas inlet pipe 10 can be dispersed and discharged through each air outlet 12, and come into contact with the collection liquid at the bottom of the collection tower 9, so as to improve the collection effect of carbon dioxide in the flue gas.

[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 carbon capture cycle processing apparatus, characterized by: The application relates to a flue gas cooling device, which comprises a flue gas cooler (2), a flue gas outlet pipe (16) and a trapping liquid pre-heater (24), the air inlet end of the flue gas cooler (2) is communicated with a flue gas conveying pipeline (1), the air outlet end of the flue gas cooler (2) is communicated with a flue gas inlet pipe (10) of a trapping tower (9) through a pipeline, the top end of the trapping tower (9) is provided with the flue gas outlet pipe (16), the trapping tower (9) is provided with a filler box (13) and a spray pipe (14) from bottom to top, a plurality of nozzles (15) are arranged on the spray pipe (14), a drain pipe (17) is fixedly arranged on the outer wall of the bottom of the trapping tower (9), the drain pipe (17) is communicated with the trapping liquid pre-heater (24) through a water pump (18) and a pipeline, the flue gas cooler (2) is provided with a first water inlet interface (7) and a first water outlet interface (8) for conveying cooling liquid, the trapping liquid pre-heater (24) is provided with a second water inlet interface (22) and a second water outlet interface (23), the first water inlet interface (7) is communicated with the output pipe of an industrial water cooler through a pipeline, the first water outlet interface (8) is communicated with the second water inlet interface (22) through a connecting pipe (25), and the second water outlet interface (23) is communicated with the return pipe of the industrial water cooler through a pipeline.

2. A carbon capture cycle processing apparatus according to claim 1, wherein: The flue gas cooler (2) comprises a shell (3), the two ends of the shell (3) are communicated with the flue gas conveying pipeline (1) and the flue gas inlet pipe (10) respectively, two baffles (4) are fixedly arranged in the shell (3) and form a water cooling bin (5) in the shell (3), the first water inlet interface (7) and the first water outlet interface (8) are communicated with the water cooling bin (5), a plurality of heat exchange straight pipes (6) are sealingly arranged on the two baffles (4), and flue gas passes through the heat exchange straight pipes (6).

3. A carbon capture cycle processing apparatus according to claim 1, wherein: The trapping liquid pre-heater (24) comprises a cylinder (19), the second water inlet interface (22) and the second water outlet interface (23) are communicated with the inside of the second water inlet interface (22), the two ends of the cylinder (19) are fixedly connected with end plates (20), a heat exchange coil (21) is arranged in the cylinder (19), and the two ends of the heat exchange coil (21) penetrate through the corresponding end plates (20); one end of the heat exchange coil (21) is communicated with the water pump (18).

4. A carbon capture cycle processing apparatus according to claim 1, wherein: The flue gas inlet pipe (10) is fixedly communicated with a ring-shaped pipe (11) at one end in the trapping tower (9), a plurality of air outlet holes (12) are arranged on the outer wall of the ring-shaped pipe (11).

5. A carbon capture cycle processing apparatus according to claim 4, wherein: The liquid surface of the trapping liquid at the bottom of the trapping tower (9) is located between the ring-shaped pipe (11) and the filler box (13).

Images