Chloroethane rectification separation device

Abstract

The utility model discloses a chloroethane rectifying and separating device which comprises a rectifying tower, tower plates of the rectifying tower comprise a first tower plate and a second tower plate which are vertically spaced and alternately arranged, and the left side and the right side of each of the first tower plate and the second tower plate are respectively provided with a flowing hole for liquid to pass through. Floating structures for discharging steam upwards are arranged on the first tower plate and the second tower plate, each floating structure comprises a through hole formed in the corresponding tower plate, a mounting frame arranged at the corresponding through hole, a cylindrical body arranged on the periphery of the top of the corresponding through hole and a floating plate arranged on the corresponding mounting frame in a sliding manner, and a screw rod with double sections of threads is arranged at the bottom of each floating plate; the mounting frame is provided with a steam passing hole and a mounting hole, the screw rod is sleeved with a spring, the spring is located above the mounting frame, adjusting nuts are in threaded connection with the screw rod above the spring and the screw rod below the mounting frame respectively, and a gap is reserved between the adjusting nut on the lower side and the bottom face of the mounting frame. The cylindrical body and the round hole are arranged at the through hole of the tower plate, and the floating plate supported by the spring is arranged on the inner side of the cylindrical body, so that when steam is generated, the air flow jacks up the floating plate to adaptively adjust the opening size of the floating plate and the cylindrical body, and the mass and heat transfer efficiency of gas-liquid mixing at the cylindrical body is optimized; the tower plates are supported by the springs and are limited by the adjusting nuts, and the positions of the adjusting nuts can be set according to different rectified substances during mounting, so that the effect of adjusting the rising amplitude of the floating plate is achieved.

Description

Technical Field

[0001] This utility model relates to distillation apparatus, and more particularly to a distillation and separation apparatus for chloroethane. Background Technology

[0002] Ethyl chloride (C2H5Cl) has a different boiling point than other impurities—unreacted raw materials such as ethylene and hydrogen chloride, or byproducts from the reaction process. Distillation is based on this difference in boiling points, using multiple partial vaporization and partial condensation processes to purify ethane chloride.

[0003] Patent application number CN202411105072.2 discloses a distillation column that prevents liquid accumulation on the sieve plate. The column plate has several through holes for the passage of gas and liquid phases. This structure has the advantages of simple structure and low cost, but its gas-liquid phase mixing effect is poor and the gas-liquid phase mixing process cannot be adjusted, resulting in the heat and mass transfer efficiency not reaching the expected effect. Utility Model Content

[0004] In view of the shortcomings of the existing technology, which cannot adjust the gas-liquid phase mixing process and thus has low heat and mass transfer efficiency, this utility model provides a chloroethane distillation and separation device.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A distillation and separation device for chloroethane includes a distillation column, a reboiler, a condenser, and a reflux condenser. The reboiler is connected to the distillation column via a pipeline. The condenser and reflux condenser are connected to the distillation column in series via pipelines. A feed pipe is provided in the middle of the distillation column. The distillation column has several trays inside. The trays include a first tray and a second tray arranged vertically at intervals and alternately. The first tray and the second tray have flow holes on their left and right sides, respectively, for liquid to pass through. The first tray and the second tray have floating structures for upward discharge of vapor. The floating structure includes a through hole on the tray, a mounting bracket at the through hole, a cylindrical body on the top periphery of the through hole, and a floating plate slidably mounted on the mounting bracket. The bottom of the floating plate has a screw with double-stage threads. The mounting bracket has a vapor passage hole and a mounting hole. A spring is sleeved on the screw and the spring is located above the mounting bracket. Adjusting nuts are threadedly connected to the screw above the spring and below the mounting bracket, respectively. A gap is left between the lower adjusting nut and the bottom surface of the mounting bracket.

[0007] Preferably, the through hole is a circular hole, the cylindrical body is a cylinder arranged along the circular hole, and the floating plate is a convex spherical surface with a maximum outer diameter greater than the outer diameter of the cylinder.

[0008] Preferably, several circular holes are provided below one-third of the height of the cylinder sidewall.

[0009] Preferably, the mounting bracket includes 2-3 circular arrayed connecting posts disposed on the side wall of the through hole and a mounting ring disposed on the inner end of the connecting posts, with a screw passing through and slidably disposed on the mounting ring.

[0010] Preferably, a first baffle is provided on the left side of the first tray and the right side of the second tray, and a second baffle is provided on the right side of the first tray and the left side of the second tray. A guide plate is provided on the top of the first baffle and the second baffle, and a flow hole is provided on the bottom side of the first baffle.

[0011] Compared with the prior art, the advantages of this utility model are as follows: This application sets a cylindrical body with a circular hole at the through hole of the tower plate, and then sets a floating plate supported by a spring on the inner side of the cylindrical body. When steam is generated, the airflow will lift the floating plate and adaptively adjust the opening size of the floating plate and the cylindrical body, thereby optimizing the mass and heat transfer efficiency of gas-liquid mixing at the cylindrical body. In addition, the tower plate is supported by a spring and limited by an adjusting nut. During installation, the position of the adjusting nut can be set according to the different distillation substances to adjust the rising amplitude of the floating plate. Attached Figure Description

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0013] Figure 1 This is a perspective view of the present application;

[0014] Figure 2 This is the front view of this application;

[0015] Figure 3 This is a cross-sectional view of this application;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0017] In the diagram: 10, distillation column; 101, feed pipe; 102, tray; 1021, first baffle; 1022, second baffle; 1023, guide plate; 20, condenser; 30, reflux condenser; 40, reboiler; 500, cylindrical body; 501, connecting column; 502, mounting ring; 503, floating plate; 504, screw; 505, spring; 506, adjusting nut. Detailed Implementation

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0019] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0020] This embodiment mainly describes the title of a chloroethane distillation and separation device, as follows:

[0021] A distillation and separation apparatus for chloroethane, such as Figure 1-4 As shown, the system includes a distillation column 10, a reboiler 40, a condenser 20, and a reflux 30. The reboiler 40 is connected to the distillation column 10 via a pipeline. The condenser 20 and the reflux 30 are connected to the distillation column 10 in series via pipelines. A feed pipe 101 is provided in the middle of the distillation column 10. The distillation column 10 has several trays 102 inside. The trays 102 include vertically spaced and alternately arranged first trays 102 and second trays 102. The first trays 102 and second trays 102 have flow holes on their left and right sides, respectively, for liquid to pass through. The first trays 102 and second trays 102 are provided with steam... The upward-discharging floating structure includes a through hole on the tower plate 102, a mounting bracket at the through hole, a cylindrical body 500 on the top periphery of the through hole, and a floating plate 503 slidably mounted on the mounting bracket. The bottom of the floating plate 503 is provided with a screw 504 with double-stage threads. The mounting bracket has a steam passage hole and a mounting hole. A spring 505 is sleeved on the screw 504 and is located above the mounting bracket. Adjusting nuts 506 are threadedly connected to the screw 504 above the spring 505 and below the mounting bracket, respectively. The lower adjusting nut 506 leaves a gap with the bottom surface of the mounting bracket. In this design, the floating plate 503 is supported by a spring 505. During operation, the floating plate 503 moves upward under the action of steam flow, thereby adjusting the size of the opening between the floating plate 503 and the top of the cylindrical body 500. This slows down the rate at which steam passes through the cylindrical body 500 under low airflow conditions and speeds up the rate at which steam passes through the cylindrical body 500 under high airflow conditions. This adaptive mode can improve the efficiency of heat and mass transfer. In addition, when the position of the adjusting nut 506 at the bottom is adjusted, the maximum height of the floating plate 503 is adjusted to limit the maximum opening amplitude and ensure that it floats and rises within the set range.

[0022] Preferably, the through hole is a circular hole, the cylindrical body 500 is a cylinder arranged along the circular hole, and the floating plate 503 is a convex spherical surface with a maximum outer diameter larger than the outer diameter of the cylinder. The floating plate 503 is spherical, which not only changes the direction of the rising airflow, but also provides greater lift when the steam airflow rises. Furthermore, if there is condensate, it will be guided and reheated at the convex top of the floating plate 503.

[0023] Preferably, several circular holes are provided below one-third of the height of the cylinder sidewall. These holes allow liquid to enter the through-hole, increasing the efficiency of heat and mass transfer.

[0024] Preferably, the mounting bracket includes 2-3 circularly arrayed connecting posts 501 disposed on the sidewall of the through hole and a mounting ring 502 disposed at the inner end of the connecting posts 501, with a screw 504 passing through and slidably disposed on the mounting ring 502. The gap between the connecting posts 501 serves as a channel for gas and liquid flow.

[0025] Preferably, a first baffle 1021 is provided on the left side of the first tray 102 and the right side of the second tray 102, and a second baffle 1022 is provided on the right side of the first tray 102 and the left side of the second tray 102. A guide plate 1023 is provided on the top of the first baffle 1021 and the second baffle 1022, and a flow hole is provided on the bottom side of the first baffle 1021. This structure is used to allow the liquid phase to flow down through the flow hole to the guide plate 1023 and then to the next layer when the liquid phase is large.

[0026] The title provided above provides a detailed description of the present utility model. Specific examples have been used to illustrate the principles and implementation methods of the present utility model. The description of the above embodiments is only for the purpose of helping to understand the present utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present utility model without departing from the principles of the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A chloroethane rectification separation device, comprising a rectification tower, a reboiler, a condenser and a refluxer, the reboiler is communicated with the rectification tower through a pipeline, the condenser and the refluxer are communicated with the rectification tower in series through a pipeline, a feeding pipe is arranged in the middle of the rectification tower, a plurality of trays are arranged in the rectification tower, the trays comprise first trays and second trays which are vertically spaced and arranged alternately, the first trays and the second trays are respectively provided with flow-through holes for liquid-state substances to pass through on the left side and the right side, characterized in that, The first and second tower plates are provided with floating structures for upward steam discharge. The floating structure includes a through hole on the tower plate, a mounting bracket at the through hole, a cylindrical body at the top periphery of the through hole, and a floating plate slidably mounted on the mounting bracket. The bottom of the floating plate is provided with a screw with double-segment threads. The mounting bracket has a steam passage hole and a mounting hole. A spring is sleeved on the screw and the spring is located above the mounting bracket. Adjusting nuts are threadedly connected to the screw above the spring and below the mounting bracket, respectively. A gap is left between the lower adjusting nut and the bottom surface of the mounting bracket.

2. The chloroethane distillation and separation apparatus according to claim 1, characterized in that, The through hole is a round hole, the cylindrical body is a cylinder arranged along the round hole, and the floating plate is a convex spherical surface with a maximum outer diameter greater than the outer diameter of the cylinder.

3. The chloroethane distillation and separation apparatus according to claim 2, characterized in that, Several circular holes are provided below one-third of the height of the side wall of the cylinder.

4. The chloroethane distillation and separation apparatus according to claim 1, characterized in that, The mounting bracket includes 2-3 circular arrayed connecting posts located on the side wall of the through hole and a mounting ring located at the inner end of the connecting posts. A screw passes through and slides on the mounting ring.

5. The chloroethane distillation and separation apparatus according to claim 1, characterized in that, A first baffle is provided on the left side of the first tray and the right side of the second tray, and a second baffle is provided on the right side of the first tray and the left side of the second tray. A guide plate is provided on the top of the first baffle and the second baffle, and a flow hole is provided on the bottom side of the first baffle.

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