A supergravity carbon dioxide capture device

Abstract

The utility model discloses a kind of supergravity carbon dioxide capture devices, it relates to carbon dioxide capture technical field, the supergravity carbon dioxide capture device, including stationary shell and the rotor of rotation setting in shell interior, rotor is extended downward by the shaft of lower end, it is through the bottom of shell, and with the output shaft of driving motor connection, realize power drive, the upper end of rotor extends to shell top area, and form rotating seal connection between the top wall of shell, the lateral wall of shell is equipped with flue gas distribution mechanism, for the flue gas to be treated even import rotor outer edge area, the upper end of rotor interior is equipped with liquid distribution mechanism, the upper end of liquid distribution mechanism is upward through shell top, and with shell between constitute rotatable seal connection. The utility model is in the cooperation of gas-liquid distribution mechanism, realize flue gas circumferential uniform distribution and liquid gradient type liquid distribution, strengthen supergravity field under gas-liquid countercurrent contact, improve mass transfer efficiency and carbon dioxide capture performance.

Description

Technical Field

[0001] This utility model relates to the field of carbon dioxide capture technology, and in particular to a supergravity carbon dioxide capture device. Background Technology

[0002] In the field of carbon capture technology, high-gravity rotating beds are widely used for CO2 absorption in flue gas because they can generate a high-intensity centrifugal force field and enhance the mass transfer process.

[0003] Traditional hypergravity devices often suffer from problems such as uneven gas distribution, unbalanced initial liquid distribution, and insufficient packing wetting, which can easily lead to excessively high local gas velocities, channeling, or dry zones, severely affecting mass transfer efficiency and collection effect. Existing equipment often adopts a central liquid inlet and outer edge gas inlet method, but lacks an effective gas-liquid uniform distribution structure, which is more prone to liquid concentration and gas short-circuiting, especially at high speeds. Utility Model Content

[0004] This invention provides a hypergravity carbon dioxide capture device, comprising a stationary outer shell and a rotor rotatably disposed inside the outer shell. The rotor extends downward through a lower shaft, penetrating the bottom of the outer shell and connecting to the output shaft of a drive motor for power drive. The upper end of the rotor extends to the top region of the outer shell, forming a rotational seal connection with the top wall of the outer shell. A flue gas distribution mechanism is provided on the side wall of the outer shell for uniformly guiding the flue gas to be treated into the outer edge region of the rotor. A liquid distribution mechanism is provided at the upper end inside the rotor, with its upper end penetrating upward through the top of the outer shell and forming a rotatable seal connection with the outer shell. The liquid distribution mechanism rotates synchronously with the rotor to uniformly distribute the absorbent liquid into the packing layer inside the rotor, achieving efficient mass transfer of gas and liquid under hypergravity.

[0005] Preferably, the flue gas distribution mechanism includes a flue gas diversion pipe embedded in the outer wall of the outer shell, a plurality of flue gas outlet pipes are provided on the inner side of the flue gas diversion pipe, and a flue gas inlet pipe is connected to the outer side of the flue gas diversion pipe.

[0006] Preferably, the rotor has smoke inlet holes distributed in a ring, the position of the smoke outlet pipe corresponds to the position of the smoke inlet holes, the lower end of the rotor has several drain outlets distributed in a ring, and the lower end of the outer shell is connected to a drain pipe.

[0007] Preferably, the liquid distribution mechanism includes a central tube rotatably connected to the top of the outer shell at its upper end, a liquid distribution pipe connected to the lower end of the central tube, the liquid distribution pipe being fixed to the inner wall of the rotor by a fixed bracket, a plurality of inclined liquid outlet pipes being provided on the liquid distribution pipe, an atomizing nozzle being installed at the lower end of the central tube, and the upper end of the central tube being rotatably connected to a connecting pipe by a rotary joint, the connecting pipe being fixed by a support frame.

[0008] Preferably, a spiral guide vane is provided below the liquid diversion pipe. The spiral guide vane is fixed to the inner wall of the rotor by welding, and the spiral direction of the spiral guide vane is consistent with the rotation direction of the rotor.

[0009] Preferably, a sealing ring plate is fixedly installed inside the outer shell, the rotor rotates in the annular hole of the sealing ring plate, and an exhaust pipe is provided at the upper end of the outer shell, which is connected to the upper end of the rotor.

[0010] The present invention provides a supergravity carbon dioxide capture device, which, compared with the prior art, has the following advantages: This invention effectively improves the uniform distribution of gas and liquid under hypergravity through the coordinated design of the flue gas distribution mechanism and the liquid distribution mechanism. The flue gas is evenly introduced into the outer edge of the rotor through the diversion pipe and the circumferential flue gas outlet pipe, and achieves circumferential uniform distribution through the annular flue gas inlet hole. The absorbent liquid is introduced through the central pipe and sprayed out at multiple points through the inclined liquid outlet pipe. Combined with the atomizing nozzle, the central pre-atomization is achieved, forming a gradient liquid distribution from the inside to the outside. With the help of the spiral guide plate, the liquid flow is guided to diffuse tangentially, preventing channeling or accumulation. The gas and liquid are in full contact due to countercurrent flow, resulting in a large mass transfer area and high reaction efficiency, thereby improving the carbon dioxide capture efficiency and operational stability. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the overall structure of an embodiment of the present utility model; Figure 3 This is a cross-sectional schematic diagram of the rotor structure according to an embodiment of the present utility model; Figure 4 This is a cross-sectional schematic diagram of the rotor structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the liquid distribution mechanism structure according to an embodiment of the present invention; Figure 6 This is a cross-sectional view of the shell and other structures of an embodiment of this utility model.

[0013] Figure label: 1. Outer shell; 2. Drain pipe; 3. Flue gas diversion pipe; 4. Smoke inlet pipe; 5. Smoke outlet pipe; 6. Sealing ring plate; 7. Rotor; 8. Motor; 9. Smoke inlet hole; 10. Spiral guide vane; 11. Drain port; 12. Packing layer; 13. Central tube; 14. Liquid diversion pipe; 15. Drain pipe; 16. Fixed bracket; 17. Connecting pipe; 18. Support frame; 19. Exhaust pipe; 20. Atomizing nozzle. Detailed Implementation

[0014] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0015] Please refer to Figures 1-6 This utility model provides a supergravity carbon dioxide capture device, including a stationary outer shell 1 and a rotor 7 rotatably disposed inside the outer shell 1.

[0016] The rotor 7 extends downward through the shaft at its lower end, passes through the bearing seat at the bottom of the housing 1, and is connected to the output shaft of the external drive motor 8 to realize power transmission and high-speed rotation. The upper end of the rotor 7 extends upward to the top area of ​​the housing 1 and forms a rotation seal connection with the top wall of the housing 1 through a mechanical seal to prevent gas leakage and ensure rotational stability.

[0017] like Figure 6 As shown, a flue gas distribution mechanism is provided on the side wall of the outer shell 1 to uniformly guide the flue gas to be treated into the outer edge area of ​​the rotor 7. The flue gas distribution mechanism includes an annular flue gas diversion pipe 3 fixedly embedded in the outer wall of the outer shell 1. An inlet pipe 4 is connected to the outside of the flue gas diversion pipe 3 for connecting to an external flue gas source. Multiple outlet pipes 5 are uniformly arranged circumferentially on the inner side of the flue gas diversion pipe 3. Each outlet pipe 5 extends into the interior of the outer shell 1 and points in the radial direction of the rotor 7.

[0018] The rotor 7 has annularly distributed smoke inlet holes 9 on its side wall. The outlet position of the smoke outlet pipe 5 corresponds to the smoke inlet holes 9 one by one, so that the flue gas can enter the packing layer 12 inside the rotor 7 evenly from the outer edge of the rotor 7. On the lower outer circumference of the rotor 7, multiple drain ports 11 are evenly opened in the circumferential direction to discharge the rich liquid after absorbing CO2. The bottom of the outer shell 1 is provided with a drain pipe 2, which is connected to the drain ports 11 to guide the rich liquid to the regeneration system.

[0019] like Figure 5As shown, a liquid distribution mechanism is provided at the upper end inside the rotor 7 to distribute the absorbent liquid evenly into the packing layer 12. The liquid distribution mechanism includes a vertically arranged central tube 13, the upper end of which extends upward through the top of the outer shell 1 and is rotatably and sealed to the connecting pipe 17 of the external liquid supply system through a rotary joint to ensure stable liquid input during the high-speed rotation of the rotor 7. The connecting pipe 17 is fixed to the outer shell 1 by a support frame 18 to avoid vibration interference.

[0020] The lower end of the central tube 13 is connected to an annular liquid distribution pipe 14. The liquid distribution pipe 14 is firmly installed on the inner wall of the rotor 7 by multiple fixed brackets 16 and rotates synchronously with the rotor 7. Multiple inclined downward liquid outlet pipes 15 are evenly arranged around the circumference of the liquid distribution pipe 14. The outlet direction of the liquid outlet pipe 15 faces the upper surface of the packing layer 12, which is conducive to the smooth diffusion of liquid and avoids splashing caused by direct impact.

[0021] At the bottom of the central tube 13, an atomizing nozzle 20 is installed, which can pre-atomize part of the absorbent into fine droplets as the liquid enters the distribution tube and spray them into the space above the packing layer 12 to enhance the initial mass transfer effect.

[0022] To further promote the uniform spread of liquid on the packing layer 12, a spiral guide vane 10 is provided below the liquid distribution pipe 14 and in the inlet area of ​​the packing layer 12. The spiral guide vane 10 is welded and fixed in a spiral shape along the inner wall of the rotor 7, and its spiral direction is consistent with the rotation direction of the rotor 7. Under the action of centrifugal force and tangential guidance, it can promote the liquid to diffuse outward along the spiral path, effectively preventing the liquid from accumulating in the central area or forming channels.

[0023] In addition, a sealing ring plate 6 is fixedly installed inside the outer casing 1, and its inner hole forms the rotation channel of the rotor 7. The rotor 7 passes through the annular hole of the sealing ring plate 6 to separate the gas and liquid.

[0024] An exhaust pipe 19 is provided at the center of the upper end of the outer casing 1. The exhaust pipe 19 is connected to the air passage at the upper end of the rotor 7 and is used to discharge the flue gas purified by the packing layer 12.

[0025] In summary, during operation, flue gas enters the flue gas distribution pipe 3 from the inlet pipe 4, and is evenly guided to the outer edge of the rotor 7 through the outlet pipes 5 and the inlet holes 9. It passes through the packing layer 12 from the outside to the inside. At the same time, the absorbent enters the liquid distribution pipe 14 through the central pipe 13, and is sprayed out through the multi-point inclined liquid outlet pipe 15. It is supplemented by the atomizing nozzle 20 for central liquid replenishment and pre-atomization. Under the guidance of the spiral guide plate 10, a uniform liquid film is formed to cover the surface of the packing. The gas and liquid come into countercurrent contact under a strong hypergravity field, completing efficient mass transfer. CO2 is absorbed, the purified gas is discharged from the top exhaust pipe 19, and the rich liquid is discharged from the bottom drain pipe 2, achieving continuous and stable operation.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A supergravity carbon dioxide capture device, characterized in that: The device includes a stationary outer shell (1) and a rotor (7) rotatably disposed inside the outer shell (1). The rotor (7) extends downward through the lower end of the rotating shaft, penetrates the bottom of the outer shell (1), and is connected to the output shaft of the drive motor (8) to achieve power drive. The upper end of the rotor (7) extends to the top area of ​​the outer shell (1) and forms a rotational seal connection with the top wall of the outer shell (1). The side wall of the outer shell (1) is provided with a flue gas distribution mechanism for uniformly introducing the flue gas to be treated into the outer edge area of ​​the rotor (7). The upper end of the rotor (7) is provided with a liquid distribution mechanism. The upper end of the liquid distribution mechanism penetrates upward through the top of the outer shell (1) and forms a rotatable seal connection with the outer shell (1). The liquid distribution mechanism rotates synchronously with the rotor (7) to uniformly distribute the absorbent liquid into the packing layer (12) inside the rotor (7) to achieve efficient mass transfer of gas and liquid under hypergravity.

2. The supergravity carbon dioxide capture device according to claim 1, characterized in that: The flue gas distribution mechanism includes a flue gas diversion pipe (3) embedded in the outer wall of the outer shell (1), a plurality of flue gas outlet pipes (5) are provided on the inner side of the flue gas diversion pipe (3), and a flue gas inlet pipe (4) is connected to the outer side of the flue gas diversion pipe (3).

3. The supergravity carbon dioxide capture device according to claim 2, characterized in that: The rotor (7) has smoke inlet holes (9) arranged in a ring. The position of the smoke outlet pipe (5) corresponds to the position of the smoke inlet holes (9). The lower end of the rotor (7) has several drain outlets (11) arranged in a ring. The lower end of the outer shell (1) is connected to a drain pipe (2).

4. The supergravity carbon dioxide capture device according to claim 1, characterized in that: The liquid distribution mechanism includes a central tube (13) whose upper end is rotatably connected to the top of the outer shell (1). The lower end of the central tube (13) is connected to a liquid distribution pipe (14). The liquid distribution pipe (14) is fixed to the inner wall of the rotor (7) by a fixed bracket (16). Several inclined liquid outlet pipes (15) are provided on the liquid distribution pipe (14). An atomizing nozzle (20) is installed at the lower end of the central tube (13). The upper end of the central tube (13) is rotatably connected to a connecting pipe (17) through a rotary joint. The connecting pipe (17) is fixed by a support frame (18).

5. The supergravity carbon dioxide capture device according to claim 4, characterized in that: The liquid diversion pipe (14) is provided with a spiral guide plate (10) below it. The spiral guide plate (10) is fixed to the inner wall of the rotor (7) by welding, and the spiral direction of the spiral guide plate (10) is consistent with the rotation direction of the rotor (7).

6. The supergravity carbon dioxide capture device according to claim 5, characterized in that: A sealing ring plate (6) is fixedly installed inside the outer shell (1). The rotor (7) rotates in the ring hole of the sealing ring plate (6). An exhaust pipe (19) is provided at the upper end of the outer shell (1), and the exhaust pipe (19) is connected to the upper end of the rotor (7).

Images