Heat exchange device of organic solvent rectifying tower

Abstract

The utility model relates to the technical field of heat exchange of organic solvent rectifying towers, and provides a heat exchange device of an organic solvent rectifying tower, which comprises a rectifying tower and a cooling liquid tower, the top and the bottom of the rectifying tower respectively penetrate through and are fixedly connected with a liquid inlet pipe and a liquid outlet pipe, and the top of the rectifying tower is fixedly provided with a motor through a mounting plate. The circulating heat exchange mechanism is arranged, so that when the motor is started to drive the stirring shaft to rotate so as to stir liquid in the rectifying tower, the liquid in the rectifying tower can be uniformly stirred; the rotating gear, the toothed bar, the liquid bin and other components are matched to drive the liquid suction pipe to suck the cooling liquid in the cooling liquid tower, the cooling liquid is discharged into the heat exchange pipe through the liquid discharge pipe, and the cooling liquid in the heat exchange pipe flows back into the cooling liquid tower through the return pipe to form circulation; and the cooling liquid continuously flowing in the heat exchange pipe has a rapid heat exchange effect on the liquid in the rectifying tower, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange of organic solvent distillation towers, and specifically to a heat exchange device of an organic solvent distillation tower. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device for distillation. By utilizing the different volatilities of the components in the mixture, that is, the different vapor pressures of the components at the same temperature, the light components (low-boiling substances) in the liquid phase are transferred to the gas phase, and the heavy components (high-boiling substances) in the gas phase are transferred to the liquid phase, thereby achieving the purpose of separation. The distillation tower is also a mass transfer and heat transfer device that is widely used in petrochemical production.

[0003] The utility model with publication number CN217504149U discloses a heat exchange device for a distillation tower, including a heat exchange cylinder, a first cylinder section is arranged on one side of the heat exchange cylinder, and a second cylinder section is arranged on the other side of the heat exchange cylinder, a flushing outlet pipe is fixedly installed on one side of the first cylinder section, a plurality of heat exchange tubes are equidistantly arranged inside the heat exchange cylinder, a water distribution pipe is arranged inside the second cylinder section, and an electric telescopic rod is arranged between one side of the water distribution pipe and the inner wall of the second cylinder section. In the above application document, liquid for cooling is input into the interior of the heat exchange cylinder through the second water inlet pipe, the liquid to be cooled enters the interior of the first cavity through the first water inlet pipe, and then enters the interior of the heat exchange tube through the first cavity, flows through the interior of the second cylinder section, and then enters the first cavity below, the liquid inside the heat exchange tube exchanges heat with the liquid inside the heat exchange cylinder, and the heat exchange effect is not good enough, which may cause uneven heat exchange, which is not conducive to daily production work. Utility Model Content

[0004] The utility model provides a heat exchange device for an organic solvent distillation tower, which solves the problem of a heat exchange device for an organic solvent distillation tower in the related technology.

[0005] The technical solution of the utility model is as follows:

[0006] A heat exchange device for an organic solvent distillation tower comprises a distillation tower and a cooling liquid tower, wherein a liquid inlet pipe and a liquid outlet pipe are respectively penetrated and fixedly connected at the top and bottom of the distillation tower, a motor is fixedly installed at the top of the distillation tower through a mounting plate, a stirring shaft is rotatably connected inside the distillation tower, and the top of the stirring shaft is fixedly connected to the output shaft of the motor, a heat exchange pipe is arranged inside the distillation tower, a circulating heat exchange mechanism is arranged on the side of the distillation tower, and a heat dissipation acceleration mechanism is arranged at the rear end of the distillation tower, the circulating heat exchange mechanism comprises a liquid bin, a reflux pipe, a pressure bin and a rotating gear, the liquid bin is fixedly installed on the side of the distillation tower through a mounting plate, a return spring is arranged inside the liquid bin, and the inside of the liquid bin is slidably connected to the return spring piston The piston rod, the two sides of the liquid bin are respectively penetrated and fixedly connected with a suction pipe and a discharge pipe, and a one-way valve is arranged inside the suction pipe and the discharge pipe, and the ends of the suction pipe and the discharge pipe away from the liquid bin are respectively penetrated and fixedly connected with the cooling liquid tower and the heat exchange pipe, one end of the reflux pipe is penetrated and fixedly connected with the heat exchange pipe, and the other end of the reflux pipe is penetrated and fixedly connected with the cooling liquid tower, the air pressure bin is fixedly connected to the top of the distillation tower, the internal piston at one end of the air pressure bin is slidably connected with a pull rod, and the end of the pull rod away from the liquid bin is fixedly connected with a gear rod, and the internal piston at the other end of the air pressure bin is slidably connected with a connecting rod, and the end of the connecting rod away from the liquid bin is fixedly connected to the top of the piston rod, and the rotating gear is fixedly connected to the surface of the stirring shaft.

[0007] The heat exchange tube is spiral in shape as a whole, and the stirring blades on the stirring shaft surface are initially away from the inner side of the heat exchange tube. The spiral heat exchange tube can fully contact the liquid in the distillation tower, and the stirring blades will not collide with the heat exchange tube when the stirring shaft rotates.

[0008] The one-way valve in the suction pipe is unidirectionally conductive toward the interior of the liquid bin, and the one-way valve in the discharge pipe is unidirectionally conductive toward the interior of the heat exchange tube. When the piston rod moves upward, negative pressure is formed in the liquid bin, thereby absorbing the coolant in the cooling liquid tower through the suction pipe. When the piston rod subsequently moves downward to restore, it squeezes the coolant in the liquid bin and discharges it into the heat exchange tube through the discharge pipe.

[0009] The rotating gear is an incomplete gear, and the teeth on the rotating gear are matched with the teeth on the gear rod. When the rotating gear rotates and meshes with the gear rod, it drives the gear rod to move rightward.

[0010] The accelerated heat dissipation mechanism includes a bevel gear A and a rotating rod, wherein the bevel gear A is fixedly connected to the bottom of the stirring shaft, the rotating rod passes through and is rotatably connected to the rear end of the distillation tower, one end of the rotating rod is fixedly connected to the bevel gear B, and the other end of the rotating rod is fixedly connected to the fan.

[0011] The bevel gear A and the bevel gear B are in a vertical meshing state in the initial state, and when the bevel gear A rotates, the bevel gear B will be driven to rotate.

[0012] The end of the fan away from the rotating rod is close to the return pipe, and the air flow at the return pipe is accelerated when the fan rotates.

[0013] The working principle and beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a circulating heat exchange mechanism, so that when the motor is turned on to drive the stirring shaft to rotate to stir the liquid in the distillation tower, the suction pipe is driven by the cooperation of the rotating gear, the gear rod, the liquid bin and other components to absorb the coolant in the cooling liquid tower and discharge it into the heat exchange pipe through the discharge pipe. The coolant in the heat exchange pipe then flows back to the cooling liquid tower through the reflux pipe to form a cycle. The coolant continuously flowing in the heat exchange pipe has the effect of rapid heat exchange on the liquid in the distillation tower, thereby improving production efficiency.

[0015] 2. The utility model is provided with a heat dissipation accelerating mechanism, so that when the motor is turned on to drive the stirring shaft to rotate to stir the liquid in the distillation tower, the fan is also driven to rotate through the cooperation of components such as bevel gear A and bevel gear B. When the fan rotates, the air flow at the reflux pipe is accelerated, thereby accelerating the heat dissipation of the coolant in the reflux pipe during the process of returning to the cooling liquid tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a three-dimensional front view of the overall structure of the utility model;

[0018] Figure 2 It is a three-dimensional back view of the overall structure of the utility model;

[0019] Figure 3 It is a three-dimensional cross-sectional view of the overall structure of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the structure of the circulation heat exchange mechanism of the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the structure of the heat dissipation acceleration mechanism of the utility model.

[0022] In the figure: 1. distillation tower; 2. cooling liquid tower; 3. liquid inlet pipe; 4. liquid outlet pipe; 5. motor; 6. stirring shaft; 7. heat exchange pipe; 8. circulating heat exchange mechanism; 81. liquid bin; 82. return spring; 83. piston rod; 84. suction pipe; 85. discharge pipe; 86. reflux pipe; 87. air pressure bin; 88. pull rod; 89. gear rod; 810. connecting rod; 811. rotating gear; 9. accelerating heat dissipation mechanism; 91. bevel gear A; 92. rotating rod; 93. bevel gear B; 94. fan. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1 to Figure 4As shown, this embodiment proposes a heat exchange device for an organic solvent distillation tower, including a distillation tower 1 and a cooling liquid tower 2. The top and bottom of the distillation tower 1 are respectively penetrated and fixedly connected with a liquid inlet pipe 3 and a liquid outlet pipe 4. The top of the distillation tower 1 is fixedly installed with a motor 5 through a mounting plate. The inside of the distillation tower 1 is rotatably connected with a stirring shaft 6. The top of the stirring shaft 6 is fixedly connected to the output shaft of the motor 5. A heat exchange tube 7 is arranged inside the distillation tower 1. The heat exchange tube 7 is spiral in shape as a whole, and the stirring blades on the surface of the stirring shaft 6 are away from the inner side of the heat exchange tube 7 in the initial state. The spiral heat exchange tube 7 can fully contact with the liquid in the distillation tower 1. When the stirring shaft 6 rotates, the stirring blades on the surface of the stirring shaft 6 are away from the inner side of the heat exchange tube 7. The spiral heat exchange tube 7 can fully contact with the liquid in the distillation tower 1. The stirring blades will not collide with the heat exchange tube 7. A circulating heat exchange mechanism 8 is arranged on the side of the distillation tower 1. A heat dissipation acceleration mechanism 9 is arranged at the rear end of the distillation tower 1. The circulating heat exchange mechanism 8 includes a liquid bin 81, a reflux pipe 86, a gas pressure bin 87 and a rotating gear 811. The liquid bin 81 is fixedly installed on the side of the distillation tower 1 through a mounting plate. A return spring 82 is arranged inside the liquid bin 81. The inside of the liquid bin 81 is connected to a piston rod 83 through a piston sliding connection of the return spring 82. A liquid suction pipe 84 and a liquid discharge pipe 85 are respectively penetrated and fixedly connected on both sides of the liquid bin 81. A one-way valve is arranged inside the liquid suction pipe 84 and the liquid discharge pipe 85. A one-way valve is arranged inside the liquid suction pipe 84. The one-way valve is one-way to the inside of the liquid tank 81, and the one-way valve in the discharge pipe 85 is one-way to the inside of the heat exchange tube 7. When the piston rod 83 moves upward, negative pressure will be formed in the liquid tank 81, so that the coolant in the cooling liquid tower 2 is sucked through the suction pipe 84, and when the piston rod 83 moves downward to restore, it will squeeze the coolant in the liquid tank 81 and discharge it into the heat exchange tube 7 through the discharge pipe 85. The ends of the suction pipe 84 and the discharge pipe 85 away from the liquid tank 81 are respectively penetrated and fixedly connected with the cooling liquid tower 2 and the heat exchange tube 7, one end of the return pipe 86 is penetrated and fixedly connected with the heat exchange tube 7, and the other end of the return pipe 86 is penetrated with the cooling liquid tower 2 And fixedly connected, the air pressure chamber 87 is fixedly connected to the top of the distillation tower 1, one end of the air pressure chamber 87 is internally connected to a pull rod 88 by a sliding connection with a piston, and the end of the pull rod 88 away from the liquid chamber 81 is fixedly connected to a gear rod 89, and the other end of the air pressure chamber 87 is internally connected to a connecting rod 810 by a sliding connection with a piston, and the end of the connecting rod 810 away from the liquid chamber 81 is fixedly connected to the top of the piston rod 83, and the rotating gear 811 is fixedly connected to the surface of the stirring shaft 6. The rotating gear 811 is an incomplete gear, and the teeth on the rotating gear 811 are matched with the teeth on the gear rod 89. When the rotating gear 811 rotates and meshes with the gear rod 89, it will drive the gear rod 89 to move to the right.

[0026] In this embodiment, when it is necessary to quickly cool down the liquid in the distillation tower 1, the motor 5 is turned on to drive the stirring shaft 6 to rotate. The stirring shaft 6 rotates to stir the liquid in the distillation tower 1. At the same time, the rotation of the stirring shaft 6 will also drive the rotating gear 811 to rotate. When the rotating gear 811 rotates and engages with the gear rod 89, it will drive the gear rod 89 and the pull rod 88 to move to the right. The rightward movement of the pull rod 88 will drive the connecting rod 810 to move upward through the air pressure in the air pressure bin 87. The upward movement of the connecting rod 810 will drive the piston rod 83 to move upward, and the reset spring 82 will be stretched. When the piston rod 83 moves upward, negative pressure will be formed in the liquid bin 81, so that the coolant is sucked through the suction pipe 84. The cooling liquid in the tower 2 is squeezed by the piston rod 83 and the gear rod 89 when the rotating gear 811 rotates to the point where the toothless part is out of mesh with the gear rod 89, the return spring 82 rebounds and drives the piston rod 83 and the connecting rod 810 to move downward and restore. At this time, the air pressure in the air pressure chamber 87 drives the pull rod 88 and the gear rod 89 to move left and restore, forming a cycle. When the piston rod 83 moves downward and restores, it squeezes the cooling liquid in the liquid chamber 81 and discharges it into the heat exchange tube 7 through the discharge pipe 85. The cooling liquid in the heat exchange tube 7 finally flows back to the cooling liquid tower 2 through the reflux pipe 86. The cooling liquid that continuously flows in the spiral heat exchange tube 7 has the effect of rapid heat exchange on the liquid in the distillation tower 1, thereby improving the production efficiency.

[0027] Example 2

[0028] like Figure 1 to Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes an accelerated heat dissipation mechanism 9, which includes a bevel gear A91 and a rotating rod 92. The bevel gear A91 is fixedly connected to the bottom of the stirring shaft 6, and the rotating rod 92 passes through and is rotatably connected to the rear end of the distillation tower 1. One end of the rotating rod 92 is fixedly connected to a bevel gear B93. The bevel gear A91 and the bevel gear B93 are in a vertical meshing state in the initial state. When the bevel gear A91 rotates, it will drive the bevel gear B93 to rotate. The other end of the rotating rod 92 is fixedly connected to a fan 94. The end of the fan 94 away from the rotating rod 92 is close to the reflux pipe 86. When the fan 94 rotates, the air flow at the reflux pipe 86 will be accelerated.

[0029] In this embodiment, when the motor 5 is turned on to drive the stirring shaft 6 to rotate, the bevel gear A91 will also be driven to rotate. When the bevel gear A91 rotates, the bevel gear B93 will be driven to rotate. The rotation of the bevel gear B93 will drive the rotating rod 92 to rotate. The rotation of the rotating rod 92 will drive the fan 94 to rotate. The rotation of the fan 94 will accelerate the air flow at the return pipe 86, thereby accelerating the heat dissipation of the coolant in the return pipe 86 during the process of returning to the cooling liquid tower 2.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchange device for an organic solvent distillation tower, comprising a distillation tower (1) and a cooling liquid tower (2), characterized in that: The top and bottom of the distillation tower (1) are respectively penetrated by and fixedly connected with a liquid inlet pipe (3) and a liquid outlet pipe (4); a motor (5) is fixedly mounted on the top of the distillation tower (1) via a mounting plate; a stirring shaft (6) is rotatably connected inside the distillation tower (1); the top of the stirring shaft (6) is fixedly connected to the output shaft of the motor (5); a heat exchange pipe (7) is arranged inside the distillation tower (1); a circulating heat exchange mechanism (8) is arranged on the side of the distillation tower (1); and a heat dissipation acceleration mechanism (9) is arranged at the rear end of the distillation tower (1); The circulating heat exchange mechanism (8) comprises a liquid bin (81), a reflux pipe (86), a gas pressure bin (87) and a rotating gear (811); the liquid bin (81) is fixedly mounted on the side of the distillation tower (1) via a mounting plate; a return spring (82) is arranged inside the liquid bin (81); a piston rod (83) is slidably connected to the inside of the liquid bin (81) via the return spring (82); a liquid suction pipe (84) and a liquid discharge pipe (85) are respectively passed through and fixedly connected to the two sides of the liquid bin (81); a one-way valve is arranged inside the liquid suction pipe (84) and the liquid discharge pipe (85); and the ends of the liquid suction pipe (84) and the liquid discharge pipe (85) away from the liquid bin (81) are respectively connected to the cooling liquid tower (2) and the heat exchange pipe ( 7) is penetrated and fixedly connected, one end of the reflux pipe (86) is penetrated and fixedly connected to the heat exchange pipe (7), the other end of the reflux pipe (86) is penetrated and fixedly connected to the cooling liquid tower (2), the air pressure chamber (87) is fixedly connected to the top of the distillation tower (1), one end of the air pressure chamber (87) is internally piston-slidingly connected to a pull rod (88), the end of the pull rod (88) away from the liquid chamber (81) is fixedly connected to a gear rod (89), the other end of the air pressure chamber (87) is internally piston-slidingly connected to a connecting rod (810), the end of the connecting rod (810) away from the liquid chamber (81) is fixedly connected to the top of the piston rod (83), and the rotating gear (811) is fixedly connected to the surface of the stirring shaft (6).

2. The heat exchange device for an organic solvent distillation tower according to claim 1, characterized in that: The heat exchange tube (7) is spiral in shape as a whole, and the stirring blades on the surface of the stirring shaft (6) are away from the inner side of the heat exchange tube (7) in the initial state.

3. The heat exchange device for an organic solvent distillation tower according to claim 2, characterized in that: The one-way valve in the liquid suction pipe (84) is one-way open to the interior of the liquid bin (81), and the one-way valve in the liquid discharge pipe (85) is one-way open to the interior of the heat exchange pipe (7).

4. The heat exchange device for an organic solvent distillation tower according to claim 3, characterized in that: The rotating gear (811) is an incomplete gear, and the teeth on the rotating gear (811) are matched with the teeth on the gear rod (89).

5. The heat exchange device for an organic solvent distillation tower according to claim 4, characterized in that: The accelerated heat dissipation mechanism (9) comprises a bevel gear A (91) and a rotating rod (92), wherein the bevel gear A (91) is fixedly connected to the bottom of the stirring shaft (6), and the rotating rod (92) passes through and is rotatably connected to the rear end of the distillation tower (1), one end of the rotating rod (92) is fixedly connected to the bevel gear B (93), and the other end of the rotating rod (92) is fixedly connected to the fan (94).

6. The heat exchange device for an organic solvent distillation tower according to claim 5, characterized in that: The bevel gear A (91) and the bevel gear B (93) are in a vertical meshing state in an initial state.

7. The heat exchange device for an organic solvent distillation tower according to claim 6, characterized in that: One end of the fan (94) away from the rotating rod (92) is close to the return pipe (86).

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