A heat exchanger for a carbon dioxide capture absorption tower and a method of using the same

Abstract

The present invention relates to the field of carbon dioxide recovery, specifically a heat exchanger for a carbon dioxide capture absorption tower and a method of using the same, comprising a shell, an absorption tower fixedly connected to the inner wall of the shell, an air inlet pipe connected to the side wall of the absorption tower, an air outlet at the top of the absorption tower, a spraying mechanism arranged in the inner wall of the absorption tower, a recovery mechanism arranged at the bottom of the absorption tower, and a bidirectional motor arranged at the bottom of the absorption tower. The heat exchanger for the carbon dioxide capture absorption tower can be recycled through two sets of suction shells, and the absorbent after preliminary absorption at the bottom can be sprayed again for reuse, so that the absorbent of the preliminary reaction can be used multiple times, so that the capacity of the absorbent finally released is reduced to avoid excessive waste of absorbent, and facilitate the environmentally friendly use of the equipment. In addition, due to the alternating use of the two sets of suction shells, pollution is avoided, which causes the pure absorbent to be diluted and affects the absorption effect.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide recovery, and in particular to a heat exchanger for a carbon dioxide capture absorption tower and a use method thereof. Background Art

[0002] Carbon dioxide, a carbon oxide, is also a common greenhouse gas. In industrial production and other environments, the waste gas produced will contain carbon dioxide. The emission of large amounts of carbon dioxide will seriously pollute the atmospheric environment and accelerate the global greenhouse effect. Therefore, in the process of waste gas emission, carbon dioxide needs to be absorbed and treated. However, the carbon dioxide content in the waste gas does not meet the requirements for canning and recycling, so it is necessary to capture carbon dioxide through an absorption tower and extract high-concentration carbon dioxide. The temperature of the waste gas is generally high, and it needs to be cooled before the absorbent can exert its maximum reaction effect.

[0003] It was found that the following problems have not been well solved: 1. After the carbon dioxide is cooled and reacted in the heat exchanger, the liquid after the reaction will fall to the bottom of the equipment, but some reactions will still not be repeated in the absorbent after the reaction. Direct discharge will easily cause waste of resources and is not convenient for the environmental protection settings of the equipment; 2. Secondly, when collecting the solution after the reaction, it is not convenient to discharge the solution in a timely and quantitative manner to facilitate the staff to carry out subsequent processing. Summary of the invention

[0004] The object of the present invention is to provide a heat exchanger for a carbon dioxide capture absorption tower and a method of using the same, so as to solve the problems of inconvenience in reuse and quantitative discharge mentioned in the above background technology. To achieve the above object, the present invention provides the following technical solution: a heat exchanger for a carbon dioxide capture absorption tower, comprising a shell, an absorption tower is fixedly connected to the inner wall of the shell, an air inlet pipe is connected to the side wall of the absorption tower, and an air outlet is opened at the top of the absorption tower, a spraying mechanism is arranged in the inner wall of the absorption tower, a recovery mechanism is arranged at the bottom end of the absorption tower, and a bidirectional motor is arranged at the bottom end of the absorption tower;

[0005] The spraying mechanism includes a hollow plate, the outer wall of the hollow plate is fixedly connected to the inner wall of the absorption tower, a plurality of the hollow plates are horizontally arranged at equal intervals, the top ends of the plurality of hollow plates are connected to input pipes, and the bottom ends of the plurality of hollow plates are connected to output pipes, a water spray rack is horizontally arranged at the top of the hollow plate, a plurality of water spray ports are arranged on the outer wall of the water spray rack, and the plurality of water spray ports are staggered with the plurality of hollow plates, and a circulation part is arranged at the top of the water spray rack.

[0006] Preferably, the circulation member comprises a suction shell, the outer wall of the suction shell is fixedly connected to the inner wall of the shell, a cavity is formed in the inner wall of the suction shell, and a sealing block is slidably connected in the inner wall of the cavity, through holes are formed at both upper and lower ends of the sealing block, and valve plates are rotatably connected at both front and rear upper and lower ends of the through holes, and torsion springs are inserted on the shaft ends of the two valve plates;

[0007] The upper and lower ends of the suction shell are respectively connected with a liquid inlet pipe and a liquid outlet pipe.

[0008] Preferably, the circulation part also includes a control box, the outer wall of the control box is fixedly connected to the inner wall of the shell, a left tooth plate is slidably connected in the inner wall of the control box, and one side of the left tooth plate is meshed with a center gear, the center gear is rotatably connected to the inner wall of the control box, and the other side of the center gear is hinged with a right tooth plate, the outer walls of the right tooth plate and the left tooth plate are fixedly connected with sliding blocks, and the two sliding blocks extend to the outer wall of the control box, and the two sliding blocks are fixedly connected with push plates, the bottom ends of the two push plates are fixedly connected with push rods, and the bottom ends of the push rods extend into the inner wall of the suction shell and are fixedly connected to the sealing block.

[0009] Preferably, the suction shells are symmetrically arranged in two groups about the axis of the control box, and the internal structures of the two suction shells are arranged identically.

[0010] Preferably, the circulating part also includes a cross beam, the outer wall of the cross beam is fixedly connected to the outer wall of the left tooth plate, an annular groove is opened in the inner wall of the cross beam, and a pulling rod with an L-shaped structure is slidably connected in the inner wall of the annular groove, the end of the pulling rod is rotatably connected to a driven roller, the outer wall of the driven roller is rotatably connected to the inner wall of the outer shell, a transmission belt is sleeved on the outer wall of the driven roller, and an active roller is sleeved on the end of the transmission belt, a notch is opened in the axial end of the active roller, and a connecting block is rotatably connected in the inner wall of the notch, the front end of the connecting block is rotatably connected to a hinged plate with a Z-shaped structure, the other end of the hinged plate is hingedly connected to a connecting block of the same structure, and the outer wall of the connecting block is hingedly arranged to the motor main shaft.

[0011] Preferably, the recovery mechanism comprises a storage bin, which is provided on the bottom wall of the absorption tower, a floating plate of a truncated cone structure is slidably connected to the inner wall of the storage bin, a bottom end of one side of the floating plate is fixedly connected to the bottom wall of the storage bin via a telescopic spring rod, a penetration rod is fixedly connected to the other side of the floating plate, and the outer wall of the penetration rod penetrates the storage bin, and a sealing sleeve is sleeved on the outer wall of the penetration rod;

[0012] A release port is provided at the bottom end of the storage bin, and the bottom end of the release port is connected to a recovery bin, a recovery groove of an annular structure is provided in the inner wall of the recovery bin, a control disk is rotatably connected at the center of the recovery bin, a discharge port is provided at the top end of the control disk, and the top end of the control disk is fitted with the bottom end of the storage bin.

[0013] Preferably, the recovery mechanism further comprises an annular gear disk, the outer wall of the annular gear disk is rotatably connected with the outer wall of the storage bin, a plurality of meshing pinion gears are arranged in an annular array in the inner wall of the annular gear disk, and a center wheel is meshed between the plurality of pinion gears, the center wheel is sleeved on the through rod, and the center wheel and the through rod are connected by a spline structure, the bottom end of the through rod is fixedly connected with a telescopic rod, the movable end and the fixed end of the telescopic rod are arranged by a spline structure, the bottom end of the telescopic rod is rotatably connected with the bottom wall of the recovery bin, a lower tooth plate is sleeved on the outer wall of the movable end of the telescopic rod, the top end of the lower tooth plate is an end face gear formed by mechanical processing, the top end of the lower tooth plate is meshed with a spur gear, and the shaft end of the spur gear is fixedly connected to the main shaft of the bidirectional motor;

[0014] A large toothed disc is meshedly arranged on the side wall of the annular toothed disc, and the large toothed disc is rotatably connected to the inner wall of the storage bin. A toggle disc is horizontally arranged above the large toothed disc, and the outer wall of the toggle disc is rotatably connected to the inner wall of the storage bin. The top surface shaft end of the large toothed disc penetrates to the top end of the toggle disc, and a toggle plate is fixedly connected to the outer wall of the top surface shaft end of the large toothed disc, and the shaft end of the large toothed disc is rotatably connected to the inner wall of the toggle disc, and the toggle plate is connected to the toggle disc through a tension spring;

[0015] A groove is provided on the outer wall of the toggle plate, and a plurality of wedge blocks arranged in a ring array are fitted on the outer wall of the toggle plate, and the rear ends of the plurality of wedge blocks are connected to the inner wall of the storage bin through a return spring, and the outer diameters of the plurality of wedge blocks match the inner diameter of the groove, the top surface of the toggle plate is fixedly connected to an arc-shaped piece, and the side surface of the arc-shaped piece is fixedly connected to a transmission plate, and the top end of the transmission plate is fixedly connected to the shaft end of the control plate.

[0016] A method for using a heat exchanger for a carbon dioxide capture absorption tower comprises the following steps:

[0017] S1. With the start-up of the device, the gas containing carbon dioxide is sent into the absorption tower through the air inlet pipe. The high-temperature gas first passes through several hollow plate areas. Since a large amount of coolant will continuously pass through the hollow plate, the high-temperature gas is divided into several cooling areas through the hollow plate. When the gas passes through the hollow plate, it will exchange heat with the fast-flowing water inside, accelerating the cooling of the gas;

[0018] S2. After the equipment is started, the shaft end on the left side of the bidirectional motor drives the connecting block to rotate. Since the connecting blocks are rotatably connected on both sides of the hinged plate, and the two connecting blocks are rotatably connected to the shaft ends of the motor main shaft and the active roller respectively, the power of the bidirectional motor can be transmitted in different directions, and then the active roller drives the driven roller to rotate through the transmission, and the driven roller drives the pulling rod to rotate in the control box. With the continuous rotation of the pulling rod, the pulling rod slides in the annular groove of the crossbeam, pushing the left tooth plate to move up and down in the control box. At this time, the left tooth plate synchronously drives one side push plate to move upward first, and the push plate pulls The sealing block moves upward. After the equipment is started, the external pure absorbent is pumped into the current suction shell. Since the two valve plates are set to rotate in one direction, when the sealing block moves upward, the absorbent pushes the valve plate open and enters the rear end of the sealing block along the through hole for preliminary feeding. When the sealing block moves downward, the valve plate and the absorbent at the lower end squeeze each other and cannot be opened. The absorbent can be pushed into the water spray rack and sent into the area separated by several hollow plates through the water spray port to absorb carbon dioxide from the cooled gas. The absorbed gas is discharged through the upper gas outlet, and the absorbed absorbent falls into the storage bin.

[0019] S3. At the same time, since two groups of suction shells are symmetrically arranged about the control box, and the liquid inlet pipe of one group of suction shells is connected to the storage bin, the two groups of suction shells can be recycled, and the absorbent initially absorbed at the bottom can be sprayed again for reuse, and it will not be used at the same time as the pure absorbent, so as to avoid affecting the use of the pure absorbent;

[0020] S4, then, as the absorbent falls and accumulates in the storage bin, the liquid level in the storage bin continues to rise, and the floating plate in the storage bin continues to rise until the floating plate pulls the telescopic rod through the through rod at the bottom to unfold, and the moving end of the telescopic rod drives the lower tooth plate to move up, and the tooth groove on the lower tooth plate meshes with the spur gear. At this time, the lower tooth plate synchronously drives the telescopic rod to rotate, and the telescopic rod indirectly drives the through rod to rotate, so that the central wheel rotates, and the ring gear slowly drives the rotation of the several small gears on the periphery of the central wheel;

[0021] S5. Then the annular toothed disc drives the large toothed disc to rotate, and the large toothed disc starts to drive the toggle plate to rotate. The toggle plate continuously pulls the tension spring to rotate on the toggle plate until the toggle plate pushes out the wedge block inserted into the groove. At this time, the toggle plate loses its restriction and moves forward and rotates through the tension spring. This operation is performed reciprocatingly, so that the toggle plate continuously pushes the control disc to rotate through the transmission disc until the discharge port on the control disc is connected to the release port on the storage bin. At this time, the absorbent in the storage bin can be discharged into the recovery bin and discharged, completing the entire absorption process.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, two groups of suction shells are used in a recycling manner, and the absorbent initially absorbed at the bottom can be sprayed again for repeated use, so that the absorbent of the initial reaction can be reused many times, so that the capacity of the absorbent finally released is reduced to avoid excessive waste of absorbent, and facilitate the environmentally friendly use of the equipment.

[0024] In the present invention, due to the alternating use of two groups of suction shells, the discarded absorbent will not directly contact with the pure absorbent, thus avoiding pollution, causing the pure absorbent to be diluted, and affecting the final absorption effect.

[0025] In the present invention, through the setting of the recovery mechanism, when the recovered solution reaches a certain content, the power connection can be triggered and timing can be performed so that the content of the final discharged solution is maintained within a certain range, which is convenient for the staff to carry out batch testing and chemical treatment of the solution and is convenient for the staff to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the present invention;

[0027] Figure 2 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 3 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 4 It is a schematic cross-sectional structural diagram of the spraying mechanism in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of two groups of suction shells in the present invention;

[0031] Figure 6 The cross-sectional structure diagram of the recovery mechanism in the present invention is shown in FIG. Figure 1 ;

[0032] Figure 7 The cross-sectional structure diagram of the recovery mechanism in the present invention is shown in FIG. Figure 2 ;

[0033] Figure 8 It is a schematic diagram of the structure of the control panel in the present invention;

[0034] Fig. 9 It is a schematic diagram of the ring gear structure in the present invention;

[0035] Fig.10 It is a schematic diagram of the hinged plate connection structure in the present invention;

[0036] Fig.11 It is a schematic diagram of the structure of the lower tooth plate in the present invention.

[0037] In the figure: 1, shell; 2, absorption tower; 3, air inlet pipe; 4, spraying mechanism; 41, hollow plate; 42, input pipe; 43, water spray rack; 44, circulation part; 441, suction shell; 442, sealing block; 443, through hole; 444, valve plate; 445, control box; 446, left gear plate; 447, central gear; 448, right gear plate; 449, push plate; 450, push rod; 451, crossbeam; 452, ring groove; 453, pull rod; 454, driven roller; 455, transmission belt; 4 56. Active roller; 457. Connecting block; 458. Articulated plate; 5. Recovery mechanism; 51. Storage bin; 52. Floating plate; 53. Through rod; 54. Recovery bin; 55. Control plate; 56. Annular gear plate; 57. Pinion; 58. Center wheel; 59. Telescopic rod; 510. Lower gear plate; 511. Face gear; 512. Straight gear; 513. Large gear plate; 514. Toggle plate; 515. Toggle plate; 516. Groove; 517. Wedge block; 518. Arc-shaped piece; 519. Transmission plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 11 The present invention provides a technical solution: a heat exchanger for a carbon dioxide capture absorption tower, comprising a shell 1, an absorption tower 2 is fixedly connected to the inner wall of the shell 1, an air inlet pipe 3 is connected to the side wall of the absorption tower 2, and an air outlet is opened at the top of the absorption tower 2, a spraying mechanism 4 is arranged in the inner wall of the absorption tower 2, a recovery mechanism 5 is arranged at the bottom end of the absorption tower 2, and a bidirectional motor is arranged at the bottom end of the absorption tower 2;

[0040] The spraying mechanism 4 includes a hollow plate 41, the outer wall of the hollow plate 41 is fixedly connected to the inner wall of the absorption tower 2, a plurality of hollow plates 41 are horizontally arranged at equal intervals, and the top ends of the plurality of hollow plates 41 are connected to input pipes 42, and the bottom ends of the plurality of hollow plates 41 are connected to output pipes, a water spray rack 43 is horizontally arranged at the top of the hollow plate 41, a plurality of water spray ports are arranged on the outer wall of the water spray rack 43, and the plurality of water spray ports are staggered with the plurality of hollow plates 41, and a circulation part 44 is arranged at the top of the water spray rack 43.

[0041] In this embodiment, Figure 1 and Figure 2As shown, the circulation member 44 includes a suction shell 441, the outer wall of the suction shell 441 is fixedly connected to the inner wall of the housing 1, a cavity is formed in the inner wall of the suction shell 441, and a sealing block 442 is slidably connected in the inner wall of the cavity, through holes 443 are formed at both upper and lower ends of the sealing block 442, and valve plates 444 are rotatably connected at both front and rear upper and lower ends of the through hole 443, and torsion springs are inserted on the shaft ends of the two valve plates 444;

[0042] The upper and lower ends of the suction shell 441 are connected with a liquid inlet pipe and a liquid outlet pipe respectively, so that through the arrangement of the two groups of suction shells 441, the liquid after preliminary absorption can be reused and used reciprocally.

[0043] In this embodiment, Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the circulation member 44 also includes a control box 445, the outer wall of the control box 445 is fixedly connected to the inner wall of the shell 1, a left tooth plate 446 is slidably connected in the inner wall of the control box 445, and a center gear 447 is meshed on one side of the left tooth plate 446, the center gear 447 is rotatably connected to the inner wall of the control box 445, and a right tooth plate 448 is hinged on the other side of the center gear 447, and sliding blocks are fixedly connected to the outer walls of the right tooth plate 448 and the left tooth plate 446, and the two sliding blocks extend to the outer wall of the control box 445, and push plates 449 are fixedly connected to the two sliding blocks, and the bottom ends of the two push plates 449 are fixedly connected to push rods 450, and the bottom ends of the push rods 450 extend to the inner wall of the suction shell 441 and are fixedly connected to the sealing block 442.

[0044] In this embodiment, Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, two groups of suction shells 441 are symmetrically arranged about the axis of the control box 445, and the internal structures of the two suction shells 441 are arranged identically. Due to the alternating use of the two groups of suction shells 441, the discarded absorbent will not directly contact the pure absorbent, thereby avoiding contamination, causing the pure absorbent to be diluted, and affecting the final absorption effect.

[0045] In this embodiment, Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the circulating member 44 also includes a crossbeam 451, the outer wall of the crossbeam 451 is fixedly connected to the outer wall of the left tooth plate 446, an annular groove 452 is provided in the inner wall of the crossbeam 451, and a pulling rod 453 of an L-shaped structure is slidably connected in the inner wall of the annular groove 452, and the end of the pulling rod 453 is rotatably connected to a driven roller 454, the outer wall of the driven roller 454 is rotatably connected to the inner wall of the shell 1, and a transmission belt 455 is sleeved on the outer wall of the driven roller 454, and an active roller 456 is sleeved on the end of the transmission belt 455, and the shaft of the active roller 456 A slot is provided in the middle of the end, and a connecting block 457 is rotatably connected to the inner wall of the slot, and the front end of the connecting block 457 is rotatably connected to a hinged plate 458 with a Z-shaped structure, and the other end of the hinged plate 458 is hingedly connected to a connecting block 457 of the same structure, and the outer wall of the connecting block 457 is hingedly arranged to the motor main shaft. Through the arrangement of the Z-shaped hinged plate 458, the two mechanisms can be connected with the same power, and the arrangement of the left tooth plate 446 and the right tooth plate 448 that can move alternately is convenient for synchronously controlling the two suction shells 441 to perform pumping operations.

[0046] In this embodiment, Figure 6 , Figure 7 and Figure 8 As shown, the recovery mechanism 5 includes a storage bin 51, which is opened on the bottom wall of the absorption tower 2. A floating plate 52 of a truncated cone structure is slidably connected in the inner wall of the storage bin 51. The bottom end of one side of the floating plate 52 is fixedly connected to the bottom wall of the storage bin 51 through a telescopic spring rod. A penetration rod 53 is fixedly connected to the other side of the floating plate 52. The outer wall of the penetration rod 53 penetrates the storage bin 51, and a sealing sleeve is sleeved on the outer wall of the penetration rod 53.

[0047] A release port is provided at the bottom end of the storage bin 51, and the bottom end of the release port is connected to a recovery bin 54. A recovery groove of an annular structure is provided in the inner wall of the recovery bin 54. A control disk 55 is rotatably connected to the center of the recovery bin 54. A discharge port is provided at the top end of the control disk 55, and the top end of the control disk 55 is fitted with the bottom end of the storage bin 51. By setting the control disk 55, the rotation of the control disk 55 is triggered at a time, and the raw materials can be released at a time.

[0048] In this embodiment, Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the recovery mechanism 5 also includes an annular gear disk 56, the outer wall of the annular gear disk 56 is rotatably connected to the outer wall of the storage bin 51, a plurality of meshing pinion gears 57 are arranged in an annular array in the inner wall of the annular gear disk 56, and a center wheel 58 is meshed between the plurality of pinion gears 57, the center wheel 58 is sleeved on the through rod 53, and the center wheel 58 and the through rod 53 are connected by a spline structure, a telescopic rod 59 is fixedly connected to the bottom end of the through rod 53, the movable end and the fixed end of the telescopic rod 59 are arranged by a spline structure, the bottom end of the telescopic rod 59 is rotatably connected to the bottom wall of the recovery bin 54, a lower tooth plate 510 is sleeved on the outer wall of the movable end of the telescopic rod 59, the top end of the lower tooth plate 510 is a face gear 511 formed by mechanical processing, the top end of the lower tooth plate 510 is meshed with a spur gear 512, and the shaft end of the spur gear 512 is fixedly connected to the main shaft of the bidirectional motor;

[0049] A large toothed disc 513 is meshedly arranged on the side wall of the annular toothed disc 56, and the large toothed disc 513 is rotatably connected to the inner wall of the storage bin 51. A toggle disc 514 is horizontally arranged above the large toothed disc 513, and the outer wall of the toggle disc 514 is rotatably connected to the inner wall of the storage bin 51. The top surface shaft end of the large toothed disc 513 penetrates to the top of the toggle disc 514, and a toggle plate 515 is fixedly connected to the outer wall of the top surface shaft end of the large toothed disc 513, and the shaft end of the large toothed disc 513 is rotatably connected to the inner wall of the toggle disc 514, and the toggle plate 515 is connected to the toggle disc 514 through a tension spring;

[0050] A groove 516 is provided on the outer wall of the toggle plate 514, and a plurality of wedge blocks 517 arranged in a ring array are fitted on the outer wall of the toggle plate 514, and the rear ends of the plurality of wedge blocks 517 are connected to the inner wall of the storage bin 51 through a return spring, and the outer diameters of the plurality of wedge blocks 517 match the inner diameter of the groove 516. An arc piece 518 is fixedly connected to the top surface of the toggle plate 514, and a transmission plate 519 is fixedly connected to the side of the arc piece 518, and the top end of the transmission plate 519 is fixedly connected to the shaft end of the control plate 55. By timed toggling of the toggle plate 514, the rotation of the upper control plate 55 can be controlled to perform timed and quantitative discharging, which is convenient for the staff to operate.

[0051] In this embodiment, Figures 1 to 11 As shown, a method for using a heat exchanger for a carbon dioxide capture absorption tower comprises the following steps:

[0052] S1. With the start-up of the device, the gas containing carbon dioxide is sent into the absorption tower 2 through the air inlet pipe 3. The high-temperature gas first passes through several hollow plate 41 areas. Since a large amount of coolant continuously passes through the hollow plate 41, the high-temperature gas is divided into several cooling areas through the hollow plate 41. When the gas passes through the hollow plate 41, it will exchange heat with the fast-flowing water inside, accelerating the cooling of the gas;

[0053] S2. At the same time, after the equipment is started, the shaft end on the left side of the bidirectional motor drives the connecting block 457 to rotate. Since the connecting blocks 457 are rotatably connected on both sides of the hinged plate 458, and the two connecting blocks 457 are rotatably connected to the shaft ends of the motor main shaft and the active roller 456 respectively, the power of the bidirectional motor can be transmitted in different directions, and then the active roller 456 drives the driven roller 454 to rotate through the transmission belt 455, and the driven roller 454 drives the pulling rod 453 to rotate in the control box 445. With the continuous rotation of the pulling rod 453, the pulling rod 453 slides in the annular groove 452 of the crossbeam 451, pushing the left tooth plate 446 to reciprocate up and down in the control box 445. At this time, the left tooth plate 446 synchronously drives the push plate 446 on one side. 9 first moves upward, the push plate 449 pulls the sealing block 442 upward, and after the equipment is started, the external pure absorbent is pumped into the current suction shell 441. Since the two valve plates 444 are set to rotate in one direction, when the sealing block 442 moves upward, the absorbent pushes the valve plate 444 and enters the rear end of the sealing block 442 along the through hole 443 to perform preliminary feeding. When the sealing block 442 moves downward, the valve plate 444 and the absorbent at the lower end squeeze each other and cannot be opened. The absorbent can be pushed into the water spray rack 43 and sent into the area between several hollow plates 41 through the water spray port to absorb carbon dioxide from the cooled gas. The absorbed gas is discharged through the upper gas outlet, and the absorbed absorbent falls into the storage bin 51.

[0054] S3. At the same time, since two groups of suction shells 441 are symmetrically arranged about the control box 445, and the liquid inlet pipe of one group of suction shells 441 is connected to the storage bin 51, the two groups of suction shells 441 can be recycled, and the absorbent initially absorbed at the bottom can be sprayed again for reuse, and the absorbent will not be used at the same time as the pure absorbent, so as to avoid affecting the use of the pure absorbent;

[0055] S4, then, as the absorbent falls and accumulates in the storage bin 51, the liquid level of the storage bin 51 continues to rise, and the floating plate 52 in the storage bin 51 continues to rise until the floating plate 52 pulls the telescopic rod 59 to unfold through the through rod 53 at the bottom, and the moving end of the telescopic rod 59 drives the lower tooth plate 510 to move upward, and the tooth groove on the lower tooth plate 510 meshes with the spur gear 512. At this time, the lower tooth plate 510 synchronously drives the telescopic rod 59 to rotate, and the telescopic rod 59 indirectly drives the through rod 53 to rotate, so that the central wheel 58 rotates, and the plurality of small gears 57 on the periphery of the central wheel 58 slowly drive the annular tooth plate 56 to rotate;

[0056] S5. Then the annular toothed disc 56 drives the large toothed disc 513 to rotate, and the large toothed disc 513 starts to drive the toggle plate 515 to rotate. The toggle plate 515 continuously pulls the tension spring to rotate on the toggle plate 514 until the toggle plate 515 pushes out the wedge block 517 inserted into the groove 516. At this time, the toggle plate 514 loses its restriction and moves forward and rotates through the tension spring. This operation is performed reciprocatingly, so that the toggle plate 514 continuously pushes the control plate 55 to rotate through the transmission plate 519 until the discharge port on the control plate 55 is connected to the release port on the storage bin 51. At this time, the absorption liquid in the storage bin 51 can be discharged into the recovery bin 54 and discharged, completing the entire absorption process.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A heat exchanger for a carbon dioxide capture absorption tower, comprising a housing (1), characterized in that: An absorption tower (2) is fixedly connected to the inner wall of the housing (1), an air inlet pipe (3) is connected to the side wall of the absorption tower (2), and an air outlet is provided at the top of the absorption tower (2), a spraying mechanism (4) is provided in the inner wall of the absorption tower (2), a recovery mechanism (5) is provided at the bottom end of the absorption tower (2), and a bidirectional motor is provided at the bottom end of the absorption tower (2); The spraying mechanism (4) comprises a hollow plate (41), the outer wall of the hollow plate (41) is fixedly connected to the inner wall of the absorption tower (2), a plurality of the hollow plates (41) are arranged horizontally at equal intervals, the top ends of the plurality of hollow plates (41) are connected to an input pipe (42), and the bottom ends of the plurality of hollow plates (41) are connected to an output pipe, a water spraying frame (43) is horizontally arranged at the top end of the hollow plate (41), a plurality of water spraying ports are arranged on the outer wall of the water spraying frame (43), and the plurality of water spraying ports and the plurality of hollow plates (41) are arranged in an alternating manner, and a circulation member (44) is arranged at the top end of the water spraying frame (43); The circulation member (44) comprises a suction shell (441), the outer wall of the suction shell (441) is fixedly connected to the inner wall of the outer shell (1), a cavity is formed in the inner wall of the suction shell (441), and a sealing block (442) is slidably connected to the inner wall of the cavity, through holes (443) are formed at both upper and lower ends of the sealing block (442), and valve plates (444) are rotatably connected at both front and rear upper and lower ends of the through hole (443), and torsion springs are inserted into the shaft ends of the two valve plates (444); The upper and lower ends of the suction shell (441) are respectively connected to a liquid inlet pipe and a liquid outlet pipe; The circulation member (44) further comprises a control box (445), the outer wall of the control box (445) being fixedly connected to the inner wall of the outer shell (1), a left tooth plate (446) being slidably connected to the inner wall of the control box (445), and a central gear (447) being meshed on one side of the left tooth plate (446), the central gear (447) being rotatably connected to the inner wall of the control box (445), and a right tooth plate (448) being hinged on the other side of the central gear (447), the outer walls of the right tooth plate (448) and the left tooth plate (446) being fixedly connected to sliding blocks, the two sliding blocks extending to the outer wall of the control box (445), and the two sliding blocks being fixedly connected to push plates (449), the bottom ends of the two push plates (449) being fixedly connected to push rods (450), and the bottom ends of the push rods (450) extending to the inner wall of the suction shell (441) and being fixedly connected to the sealing block (442); The suction shells (441) are arranged in two groups symmetrically about the axis of the control box (445), and the internal structures of the two suction shells (441) are arranged identically; The circulating member (44) further comprises a crossbeam (451), the outer wall of which is fixedly connected to the outer wall of the left tooth plate (446), an annular groove (452) is provided in the inner wall of the crossbeam (451), and an L-shaped pulling rod (453) is slidably connected to the inner wall of the annular groove (452), the end of which is rotatably connected to a driven roller (454), the outer wall of which is rotatably connected to the inner wall of the housing (1), and the driven roller (454) A transmission belt (455) is sleeved on the outer wall, an active roller (456) is sleeved on the end of the transmission belt (455), a slot is provided in the shaft end of the active roller (456), and a connecting block (457) is rotatably connected to the inner wall of the slot, a front end of the connecting block (457) is rotatably connected to a hinged plate (458) with a Z-shaped structure, the other end of the hinged plate (458) is hingedly connected to a connecting block (457) with the same structure, and the outer wall of the connecting block (457) is hingedly arranged to the main shaft of the motor.

2. A heat exchanger for a carbon dioxide capture absorption tower according to claim 1, characterized in that: The recovery mechanism (5) comprises a storage bin (51), the storage bin (51) being provided on the bottom wall of the absorption tower (2), a floating plate (52) of a truncated cone structure being slidably connected to the inner wall of the storage bin (51), a bottom end of one side of the floating plate (52) being fixedly connected to the bottom wall of the storage bin (51) via a telescopic spring rod, a penetration rod (53) being fixedly connected to the other side of the floating plate (52), the outer wall of the penetration rod (53) penetrating the storage bin (51), and a sealing sleeve being sleeved on the outer wall of the penetration rod (53); The bottom end of the storage bin (51) is provided with a release port, and the bottom end of the release port is connected to a recovery bin (54), an inner wall of the recovery bin (54) is provided with a recovery groove of an annular structure, a control disk (55) is rotatably connected at the center of the recovery bin (54), a discharge port is provided at the top end of the control disk (55), and the top end of the control disk (55) is arranged to fit the bottom end of the storage bin (51).

3. A heat exchanger for a carbon dioxide capture absorption tower according to claim 2, characterized in that: The recovery mechanism (5) further comprises an annular toothed disc (56), the outer wall of which is rotatably connected to the outer wall of the storage bin (51), a plurality of meshing pinions (57) are arranged in an annular array in the inner wall of the annular toothed disc (56), and a center wheel (58) is meshed between the plurality of pinions (57), the center wheel (58) is sleeved on the through rod (53), and the center wheel (58) and the through rod (53) are connected by a spline structure, and the bottom end of the through rod (53) is fixed A telescopic rod (59) is connected, the movable end and the fixed end of the telescopic rod (59) are arranged with a spline structure, the bottom end of the telescopic rod (59) is rotatably connected to the bottom wall of the recovery bin (54), a lower tooth plate (510) is sleeved on the outer wall of the movable end of the telescopic rod (59), the top end of the lower tooth plate (510) is an end face gear (511) formed by mechanical processing, the top end of the lower tooth plate (510) is meshed with a spur gear (512), and the shaft end of the spur gear (512) is fixedly connected to the main shaft of the bidirectional motor; A large toothed disc (513) is meshedly arranged on the side wall of the annular toothed disc (56), the large toothed disc (513) is rotatably connected to the inner wall of the storage bin (51), a toggle disc (514) is horizontally arranged above the large toothed disc (513), the outer wall of the toggle disc (514) is rotatably connected to the inner wall of the storage bin (51), the top surface axial end of the large toothed disc (513) penetrates to the top end of the toggle disc (514), a toggle plate (515) is fixedly connected to the outer wall of the top surface axial end of the large toothed disc (513), the axial end of the large toothed disc (513) is rotatably connected to the inner wall of the toggle disc (514), and the toggle plate (515) is connected to the toggle disc (514) via a tension spring; The outer wall of the toggle plate (514) is provided with a groove (516), and a plurality of wedge blocks (517) arranged in an annular array are fitted on the outer wall of the toggle plate (514), and the rear ends of the plurality of wedge blocks (517) are connected to the inner wall of the storage bin (51) via a return spring, and the outer diameters of the plurality of wedge blocks (517) match the inner diameter of the groove (516), the top surface of the toggle plate (514) is fixedly connected to an arc-shaped piece (518), and the side surface of the arc-shaped piece (518) is fixedly connected to a transmission plate (519), and the top end of the transmission plate (519) is fixedly connected to the shaft end of the control plate (55).

4. The method for using a heat exchanger for a carbon dioxide capture absorption tower according to claim 3, characterized in that: The steps include: S1. With the start-up of the device, the gas containing carbon dioxide is sent into the absorption tower (2) through the air inlet pipe (3). The high-temperature gas first passes through a plurality of hollow plate (41) areas. Since a large amount of coolant continuously passes through the hollow plate (41), the high-temperature gas is divided into a plurality of cooling areas through the hollow plate (41). When the gas passes through the hollow plate (41), it exchanges heat with the fast-flowing water inside, thereby accelerating the cooling of the gas. S2. After the equipment is started, the shaft end on the left side of the bidirectional motor drives the connecting block (457) to rotate. Since both sides of the hinged plate (458) are rotatably connected with the connecting blocks (457), and the two connecting blocks (457) are rotatably connected with the shaft ends of the motor main shaft and the active roller (456), respectively, the power of the bidirectional motor can be transmitted in different directions, and then the active roller (456) drives the driven roller (454) to rotate through the transmission belt (455), and the driven roller (454) drives the pulling rod (453) to rotate in the control box (445). With the continuous rotation of the pulling rod (453), the pulling rod (453) slides in the annular groove (452) of the crossbeam (451), pushing the left tooth plate (446) to move back and forth in the control box (445). At this time, the left tooth plate (446) synchronously drives the left tooth plate (446) on one side to rotate. The push plate (449) moves upward first, and the push plate (449) pulls the sealing block (442) upward. After the equipment is started, the external pure absorbent is pumped into the current suction shell (441). Since the two valve plates (444) are arranged to rotate in one direction, when the sealing block (442) moves upward, the absorbent pushes the valve plate (444) and enters the rear end of the sealing block (442) along the through hole (443) to perform preliminary feeding. When the sealing block (442) moves downward, the valve plate (444) and the absorbent at the lower end are squeezed against each other and cannot be opened. The absorbent can be pushed into the water spray rack (43) and sent into the area between the plurality of hollow plates (41) through the water spray port to absorb carbon dioxide from the gas after cooling. The absorbed gas is discharged through the gas outlet at the top, and the absorbed absorbent falls into the storage bin (51). S3. At the same time, since two groups of suction shells (441) are symmetrically arranged with respect to the control box (445), and the liquid inlet pipe of one group of suction shells (441) is connected to the storage bin (51), the two groups of suction shells (441) can be recycled, and the absorbent initially absorbed at the bottom can be sprayed again for reuse, and the absorbent will not be used at the same time as the pure absorbent during the use, thereby avoiding affecting the use of the pure absorbent; S4, as the absorbent falls and accumulates in the storage bin (51), the liquid level of the storage bin (51) continues to rise, and the floating plate (52) in the storage bin (51) continues to rise until the floating plate (52) is unfolded by pulling the telescopic rod (59) through the through rod (53) at the bottom, and the moving end of the telescopic rod (59) drives the lower tooth plate (510) to move upward, and the tooth groove on the lower tooth plate (510) meshes with the spur gear (512). At this time, the lower tooth plate (510) synchronously drives the telescopic rod (59) to rotate, and the telescopic rod (59) indirectly drives the through rod (53) to rotate, so that the central wheel (58) rotates, and a plurality of small gears (57) on the periphery of the central wheel (58) slowly drive the annular tooth plate (56) to rotate; S5. Then, the annular toothed disc (56) drives the large toothed disc (513) to rotate, and the large toothed disc (513) starts to drive the toggle plate (515) to rotate. The toggle plate (515) continuously pulls the tension spring to rotate on the toggle plate (514) until the toggle plate (515) pushes out the wedge block (517) inserted into the groove (516). At this time, the toggle plate (514) is free from restriction and moves forward and rotates through the tension spring. This operation is performed reciprocatingly, so that the toggle plate (514) continuously pushes the control plate (55) to rotate through the transmission disc (519) until the discharge port on the control plate (55) is connected to the release port on the storage bin (51). At this time, the absorbent in the storage bin (51) can be discharged into the recovery bin (54) and discharged, completing the entire absorption process.

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