Rectification device with double reboilers for heating

Abstract

The utility model discloses a rectification device with double reboilers for heating, and relates to the technical field of rectification equipment, in particular to the rectification device with the double reboilers for heating, which comprises a rectification mechanism and is used for separating a mixture, and a conveying mechanism is arranged on the rectification mechanism and is used for conveying a liquid mixture. The execution assembly comprises a liquid inlet pipe arranged on the outer wall of the rectification mechanism, liquid conveying pipes fixed to the two ends of the liquid inlet pipe, liquid distribution pipes rotationally installed at the inner ends of the liquid conveying pipes, and a plurality of liquid distribution holes formed in the liquid distribution pipes and distributed circumferentially; the output end of the gear motor drives the rotating shaft to drive the driving bevel gear to rotate, and the driving bevel gear is matched with the liquid distribution pipe through the driven bevel gear to drive the downcomer to rotate. And a liquid mixture enters the liquid conveying pipes on the two sides through the liquid inlet pipe, then enters the liquid distribution pipes through the liquid distribution holes, and is discharged outwards from the liquid falling holes through the liquid falling pipes, so that the liquid mixture can be uniformly scattered to the lower part.

Description

Technical Field

[0001] The utility model relates to the technical field of rectification equipment, in particular to a rectification device with a double reboiler for heating. Background Technique

[0002] A rectification column is a tower-type gas-liquid contact device for rectification. By utilizing the property that each component in a mixture has different volatilities, that is, the vapor pressures of each component are different at the same temperature, the light components (low-boiling substances) in the liquid phase are transferred to the gas phase, while the heavy components (high-boiling substances) in the gas phase are transferred to the liquid phase, so as to achieve the purpose of separation. The rectification column is also a mass transfer and heat transfer device widely used in petrochemical production;

[0003] Upon inquiry, the publication number: CN216798745U discloses a rectification device with a double reboiler for heating. In this technology, "a rectification device with a double reboiler for heating is disclosed, including a rectification column; a partition plate, which divides the bottom of the rectification column into a material low-temperature area and a material high-temperature area; a primary heating pipeline, on which a pump body I and a reboiler I are provided; a secondary heating pipeline, on which a pump body II and a reboiler II are provided" and other technical solutions, and has technical effects such as "dividing the bottom of the rectification column into a material low-temperature area and a material high-temperature area by a partition plate, and the partition plate is made of a heat-insulating material with good heat-insulating performance to reduce heat transfer between high and low temperatures. There are a reboiler I and a reboiler II outside the rectification column for heating the materials in the material low-temperature area and the material high-temperature area, which can use energy of different energy levels, improve the rectification process, and have obvious energy-saving effects";

[0004] The above scheme directly transports the liquid mixture through a downcomer. Since directly using a downcomer may not be able to meet the physical properties (such as viscosity, surface tension, etc.) and operating conditions (such as flow rate, temperature, pressure, etc.) of different liquid mixtures, it may cause the liquid to not fall evenly during actual operation, directly affecting the separation efficiency of the rectification column. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a rectification device with a double reboiler for heating, which has the characteristics that the output end of a reduction motor drives a rotating shaft to drive a driving bevel gear to rotate, and the driving bevel gear drives a downcomer to rotate through a driven bevel gear and a liquid distribution pipe; and the liquid mixture enters the liquid delivery pipes on both sides through a liquid inlet pipe respectively, then enters the liquid distribution pipe through a liquid distribution hole, and then is discharged outward through the downcomer from a liquid discharge hole, so that the liquid mixture can be evenly sprinkled downwards.

[0006] To achieve the above object, the present utility model is realized through the following technical solutions: A rectification device with a double reboiler for heating, including a rectification mechanism for separating mixtures, and a conveying mechanism is arranged on the rectification mechanism for conveying liquid mixtures. The conveying mechanism includes:

[0007] An execution component, including a liquid inlet pipe arranged on the outer wall of the rectification mechanism, liquid delivery pipes fixed at both ends of the liquid inlet pipe, a liquid distribution pipe rotatably installed at the inner end of the liquid delivery pipe, a plurality of liquid distribution holes circumferentially distributed on the liquid distribution pipe, a downcomer fixed at the top of the liquid distribution pipe, and a plurality of equally distributed downcomer holes arranged on the downcomer;

[0008] A driving component, arranged on the rectification mechanism and used to control the rotation of the downcomer.

[0009] Preferably, the driving component includes a cylinder arranged inside the upper end of the rectification mechanism, a housing fixed at the inner end of the cylinder, a driven bevel gear rotatably installed at the lower end inside the housing, and the driven bevel gear is fixed to the upper liquid distribution pipe, a rotating shaft rotatably installed inside the cylinder, a driving bevel gear fixed at the inner end of the rotating shaft, and the driving bevel gear meshes with the driven bevel gear for transmission, and a reduction motor installed on the rectification mechanism for driving the rotation of the rotating shaft.

[0010] Preferably, the outer wall of the cylinder is of a pipe structure, and the upper end of the housing is of a hemispherical structure.

[0011] Preferably, the conveying mechanism further includes a shaft rod fixed at the bottom of the upper downcomer, and the lower end of the shaft rod is fixed to the lower liquid distribution pipe.

[0012] Preferably, the rectification mechanism includes pedals fixed at the upper and middle parts inside the rectification tower, and a plurality of distributors installed on the top of the pedals.

[0013] Preferably, the rectification mechanism further includes a partition fixed at the lower end inside the rectification tower, liquid discharge ports arranged on both sides at the lower end of the rectification tower, air inlet ports arranged below both ends of the rectification tower, and an exhaust port arranged at the upper end of the rectification tower.

[0014] Beneficial effects

[0015] The present utility model provides a rectification device with a double reboiler for heating. Compared with the prior art, it has the following beneficial effects:

[0016] (1) The liquid mixture enters the liquid delivery pipes on both sides through the liquid inlet pipe, then enters the liquid distribution pipe through the liquid distribution holes, and then is discharged outward through the downcomer holes of the downcomer, so that the liquid mixture can be continuously and evenly scattered outward.

[0017] (2) The output end of the reduction motor drives the rotating shaft to drive the driving bevel gear to rotate, and the driving bevel gear drives the downcomer to rotate through the driven bevel gear and the liquid distribution pipe, so that the liquid mixture can be scattered to any position below. Description of the Drawings

[0018] Figure 1 It is a three - dimensional structural schematic diagram of the rectification mechanism of the present utility model;

[0019] Figure 2 It is a structural schematic diagram inside the rectification tower of the present utility model;

[0020] Figure 3 It is a sectional structural schematic diagram of the rectification mechanism of the present utility model;

[0021] Figure 4 For the present utility model Figure 3 It is a structural schematic diagram of the local part A.

[0022] In the figure: 1. Rectification mechanism; 11. Rectification tower; 12. Pedal; 13. Distributor; 14. Baffle; 15. Drain port; 16. Air inlet; 17. Exhaust port; 2. Conveying mechanism; 21. Execution component; 211. Liquid inlet pipe; 212. Liquid delivery pipe; 213. Liquid distribution pipe; 214. Liquid distribution holes; 215. Downcomer; 216. Downcomer holes; 22. Driving component; 221. Cylinder body; 222. Housing; 223. Driven bevel gear; 224. Rotating shaft; 225. Driving bevel gear; 226. Reduction motor; 23. Shaft rod. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution for a rectification device with a double reboiler for heating: A rectification device with a double reboiler for heating includes a rectification mechanism 1 for separating mixtures, and a conveying mechanism 2 is arranged on the rectification mechanism 1 for conveying liquid mixtures. The conveying mechanism 2 includes:

[0025] An execution component 21, including a liquid inlet pipe 211 arranged on the outer wall of the rectification mechanism 1, liquid delivery pipes 212 fixed at both ends of the liquid inlet pipe 211, a liquid distribution pipe 213 rotatably installed at the inner end of the liquid delivery pipe 212, a number of circumferentially distributed liquid distribution holes 214 opened on the liquid distribution pipe 213, a downcomer 215 fixed at the top of the liquid distribution pipe 213, and a number of equally - distributed downcomer holes 216 opened on the downcomer 215;

[0026] The driving assembly 22 is arranged on the rectifying mechanism 1 and is used to control the rotation of the downcomer 215.

[0027] In this embodiment, the liquid mixture enters the liquid delivery pipes 212 on both sides through the liquid inlet pipe 211 respectively, then enters the liquid distribution pipe 213 through the liquid distribution holes 214, and then is discharged outward through the downcomer 215 from the downcomer holes 216, so that the liquid mixture can continuously and evenly spill outward.

[0028] Specifically, the driving assembly 22 includes a cylinder body 221 arranged inside the upper end of the rectifying mechanism 1, a housing 222 fixed to the inner end of the cylinder body 221, a driven bevel gear 223 rotatably installed at the lower end inside the housing 222, and the driven bevel gear 223 is fixed to the upper liquid distribution pipe 213, a rotating shaft 224 rotatably installed inside the cylinder body 221, a driving bevel gear 225 fixed to the inner end of the rotating shaft 224, and the driving bevel gear 225 is meshed with the driven bevel gear 223 for transmission, and a reduction motor 226 installed on the rectifying mechanism 1 and used to drive the rotating shaft 224 to rotate.

[0029] In this embodiment, the output end of the reduction motor 226 drives the rotating shaft 224 to drive the driving bevel gear 225 to rotate, and the driving bevel gear 225 drives the downcomer 215 to rotate through the driven bevel gear 223 in cooperation with the liquid distribution pipe 213, so that the liquid mixture can spill to any position below.

[0030] Specifically, the outer wall of the cylinder body 221 is a pipe-shaped structure, and the upper end of the housing 222 is a hemispherical structure.

[0031] In this embodiment, it is ensured that no liquid mixture can accumulate on the surface of the cylinder body 221 and the surface of the housing 222 to generate water stains.

[0032] Specifically, the conveying mechanism 2 further includes a shaft rod 23 fixed to the bottom of the upper downcomer 215, and the lower end of the shaft rod 23 is fixed to the lower liquid distribution pipe 213.

[0033] In this embodiment, when the upper downcomer 215 rotates, it can drive the lower downcomer 215 to rotate synchronously through the shaft rod 23 in cooperation with the lower liquid distribution pipe 213, improving the rectifying efficiency.

[0034] Specifically, the rectifying mechanism 1 includes pedals 12 fixed to the upper end and the middle part inside the rectifying tower 11, and a plurality of distributors 13 installed on the tops of the pedals 12.

[0035] In this embodiment, since there may be uneven phenomena such as wall flow when the liquid mixture flows downward, by arranging the distributors 13, the already partially flowing liquid can be redistributed evenly to the next layer, ensuring that the liquid flow in the whole tower remains uniform.

[0036] Specifically, the rectification mechanism 1 further includes a partition plate 14 fixed to the lower end inside the rectification tower 11, liquid discharge ports 15 provided on both sides at the lower end of the rectification tower 11, air inlet ports 16 provided below both ends of the rectification tower 11, and an exhaust port 17 provided at the upper end of the rectification tower 11.

[0037] In this embodiment, the liquid discharge ports 15 on both sides at the lower end of the rectification tower 11 are each connected to a reboiler through a pump body, and the reboilers on both sides are respectively connected to the air inlet ports 16 at both ends of the rectification tower 11.

[0038] The working principle and usage process of the present utility model are as follows: First, the liquid mixture enters the liquid delivery pipes 212 on both sides through the liquid inlet pipe 211, then enters the liquid distribution pipe 213 through the liquid distribution holes 214, and then is discharged outward through the downcomer 215 from the downcomer holes 216.

[0039] At the same time, the output end of the reduction motor 226 drives the rotating shaft 224 to drive the driving bevel gear 225 to rotate. The driving bevel gear 225 drives the downcomer 215 to rotate through the driven bevel gear 223 in cooperation with the liquid distribution pipe 213, so that the liquid mixture can be evenly sprinkled downward.

[0040] Moreover, when the upper downcomer 215 rotates, it can drive the lower downcomer 215 to rotate synchronously through the shaft rod 23 in cooperation with the lower liquid distribution pipe 213, improving the rectification efficiency.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rectification device with a double reboiler for heating, characterized in that: Comprising a rectification mechanism (1) and used for separating mixtures, a conveying mechanism (2) is arranged on the rectification mechanism (1) and used for conveying liquid mixtures. The conveying mechanism (2) includes: An execution component (21), including a liquid inlet pipe (211) arranged on the outer wall of the rectification mechanism (1), liquid conveying pipes (212) fixed at both ends of the liquid inlet pipe (211), a liquid distribution pipe (213) rotatably installed at the inner end of the liquid conveying pipe (212), a plurality of liquid distribution holes (214) circumferentially distributed on the liquid distribution pipe (213), a downcomer (215) fixed at the top of the liquid distribution pipe (213), and a plurality of downcomer holes (216) equally distributed on the downcomer (215); A drive component (22), arranged on the rectification mechanism (1) and used for controlling the rotation of the downcomer (215).

2. The rectification device with a double reboiler for heating according to claim 1, wherein: The drive component (22) includes a cylinder body (221) arranged inside the upper end of the rectification mechanism (1), a housing (222) fixed at the inner end of the cylinder body (221), a driven bevel gear (223) rotatably installed at the lower end inside the housing (222), and the driven bevel gear (223) is fixed to the upper liquid distribution pipe (213). A rotating shaft (224) is rotatably installed inside the cylinder body (221), a driving bevel gear (225) is fixed at the inner end of the rotating shaft (224), and the driving bevel gear (225) is in meshing transmission with the driven bevel gear (223). A reduction motor (226) is installed on the rectification mechanism (1) and used for driving the rotation of the rotating shaft (224).

3. The rectification device with a double reboiler for heating according to claim 2, characterized in that: The outer wall of the cylinder body (221) is of a pipe-shaped structure, and the upper end of the housing (222) is of a hemispherical structure.

4. A rectification device with a double reboiler for heating according to claim 1, characterized in that: The conveying mechanism (2) further includes a shaft rod (23) fixed at the bottom of the upper downcomer (215), and the lower end of the shaft rod (23) is fixed to the lower liquid distribution pipe (213).

5. A rectification device with a double reboiler for heating according to claim 1, characterized in that: The rectification mechanism (1) includes pedals (12) fixed at the upper and middle parts inside the rectification tower (11), and a plurality of distributors (13) installed on the tops of the pedals (12).

6. A rectification device with a double reboiler for heating according to claim 5, characterized in that: The rectification mechanism (1) further includes a partition plate (14) fixed at the lower end inside the rectification tower (11), liquid discharge ports (15) arranged on both sides at the lower end of the rectification tower (11), air inlet ports (16) arranged below both ends of the rectification tower (11), and an exhaust port (17) arranged at the upper end of the rectification tower (11).

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