Rectifying tower for processing ethylene glycol diacetate

Abstract

The utility model relates to the technical field of ethylene glycol diacetate processing, and discloses a rectifying tower for ethylene glycol diacetate processing, which comprises a rectifying tower body and a lifting adjusting component arranged inside the rectifying tower body. In the ethylene glycol diacetate processing process of the rectifying tower, through driving of the driving motor, the ball screw can be driven to be matched with the ball nut to achieve the purpose of lifting adjustment of the liquid collector on the connecting base, and then the position adjustment function is provided for the liquid collector; the position of the liquid collector capable of being adjusted up and down can be flexibly adjusted according to the height of the liquid level, collection of liquid at different liquid levels is ensured, the separation efficiency is improved, stable operation of the rectification process is ensured, when the connecting base ascends and descends on the adjusting cylinder, the pulley on the other side of the adjusting cylinder slides on the sliding groove, dredging is provided for the liquid collector on the connecting base, and the safety of the rectification process is improved. And the lifting stability of the liquid collector is further improved.

Description

Technical Field

[0001] This utility model relates to the field of ethylene glycol diacetate processing technology, specifically to a distillation column for ethylene glycol diacetate processing. Background Technology

[0002] Ethylene glycol diacetate is a chemical substance with the general chemical properties of esters. It is easily hydrolyzed into alcohols and acetic acid in the presence of caustic alkalis and inorganic acids. In the processing of ethylene glycol diacetate, the distillation column plays a crucial role. The product coming out of the reactor is a mixture of ethylene glycol diacetate, unreacted raw materials (ethylene glycol and acetic acid), and a small amount of byproducts. The distillation column can separate and purify ethylene glycol diacetate from these mixtures by taking advantage of the differences in the boiling points of the components.

[0003] The applicant believes that:

[0004] In the process of processing ethylene glycol diacetate in distillation columns, since the position of the liquid collector inside most distillation columns is not adjustable, in the later stage of distillation column operation, as the liquid in the column gradually decreases, if the position of the liquid collector is fixed, its inlet may be higher than the remaining liquid level, resulting in some liquid not being collected. This uncollected liquid may affect the gas-liquid balance in the column, thereby reducing the separation efficiency, and thus requiring improvement. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a distillation column for ethylene glycol diacetate processing, which features an adjustable position for the liquid collector inside the column. This solves the problem that, since the position of the liquid collector in most distillation columns is not adjustable, in the later stages of column operation, as the liquid level gradually decreases, if the liquid collector position is fixed, its inlet may be higher than the remaining liquid level, resulting in some liquid not being collected. This uncollected liquid may affect the gas-liquid balance inside the column, thereby reducing separation efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a distillation column for processing ethylene glycol diacetate, comprising a distillation column body and a lifting and adjusting component. The lifting and adjusting component is provided inside the distillation column body. The lifting and adjusting component includes an adjusting cylinder, a slide, a drive motor, a ball screw, a ball nut, a connecting seat, a pulley, a liquid collector, a guide plate, a connecting hose, a connecting pipe, and a liquid outlet pipe.

[0009] An regulating cylinder is connected through the interior of the distillation column body. Slide grooves are provided on both sides of the regulating cylinder. A drive motor is fixedly connected to the lower end of the slide groove on the inner wall of the regulating cylinder. The output shaft of the drive motor is fixedly connected to a ball screw via a coupling. A ball nut is fitted onto the outer wall of the ball screw. A connecting seat is fixedly connected to one side of the ball nut. A pulley is slidably connected to the other side of the connecting seat inside the slide groove. A liquid collector is fixedly connected above the connecting seat.

[0010] Furthermore, a guide plate is installed above the liquid collector, and a connecting hose is connected to the outlet of the liquid collector.

[0011] Furthermore, the other end of the connecting hose is connected to a connecting pipe, and the other end of the connecting pipe is connected to a liquid outlet pipe, which penetrates the interior of the regulating cylinder.

[0012] Furthermore, a scraping component is provided below the internal packing support frame of the distillation column body. The scraping component includes a column cylinder, a support frame, a servo motor, a connecting column, and a scraper.

[0013] Furthermore, a column cylinder is fixedly connected below the internal packing support frame of the distillation column body, and a bracket is welded to the lower interior of the column cylinder.

[0014] Furthermore, a servo motor is fixedly connected to the lower part of the bracket, and the output shaft of the servo motor is fixedly connected to a connecting column through a coupling. Scrapers are welded to the outer wall of the connecting column at equal intervals, and the scrapers are in contact with the lower part of the internal packing support frame of the distillation column body.

[0015] Furthermore, an exhaust gas pipe is installed at the upper end of the distillation column body, and an inlet pipe is connected through to one side of the upper end of the distillation column body.

[0016] Furthermore, a feed pipe is connected through the interior of the distillation column body below the liquid inlet pipe, and an air inlet pipe is connected through the lower end of the distillation column body.

[0017] Compared with the prior art, the present invention provides a distillation column for processing ethylene glycol diacetate, which has the following beneficial effects:

[0018] 1. In the process of processing ethylene glycol diacetate, the distillation column, driven by a motor, can adjust the position of the liquid collector on the connecting seat by driving a ball screw and ball nut. This provides a position adjustment function for the liquid collector, which can be adjusted flexibly according to the liquid level to ensure the collection of liquid at different levels, improve separation efficiency, and ensure the stable operation of the distillation process. When the connecting seat is raised and lowered on the adjusting cylinder, the pulley on the other side of the adjusting cylinder slides on the slide groove, providing guidance for the liquid collector on the connecting seat, thereby improving the stability of the liquid collector's raising and lowering.

[0019] 2. During the processing of ethylene glycol diacetate in this distillation column, the scraper is in close contact with the lower part of the internal packing support frame of the distillation column body. Driven by a servo motor, the scraper on the connecting column can rotate, thereby scraping the liquid under the internal packing support frame of the distillation column body. This can better separate the liquid accumulated under the packing support frame for collection, thus improving the liquid collection efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a distillation column for processing ethylene glycol diacetate provided in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the lifting and adjusting component of the distillation column for processing ethylene glycol diacetate provided in this embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the liquid collector of the distillation column for ethylene glycol diacetate processing provided in this embodiment of the utility model.

[0023] Figure 4 This is a schematic diagram of the scraping component of the distillation column for processing ethylene glycol diacetate provided in this embodiment of the present invention.

[0024] The components include: 1. Distillation column body; 2. Lifting and adjusting components; 201. Adjusting cylinder; 202. Slide chute; 203. Drive motor; 204. Ball screw; 205. Ball nut; 206. Connecting seat; 207. Pulley; 208. Liquid collector; 209. Guide plate; 210. Connecting hose; 211. Connecting pipe; 212. Liquid outlet pipe; 3. Scraper components; 301. Column; 302. Support; 303. Servo motor; 304. Connecting column; 305. Scraper; 4. Exhaust gas pipe; 5. Liquid inlet pipe; 6. Feed pipe; 7. Air inlet pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1 to 4 This utility model provides a technical solution: a distillation column for processing ethylene glycol diacetate, including a distillation column body 1 and a lifting and adjusting component 2. The lifting and adjusting component 2 is installed inside the distillation column body 1. A scraping component 3 is installed below the packing support frame inside the distillation column body 1. An exhaust pipe 4 is installed at the upper end of the distillation column body 1. An inlet pipe 5 is connected through to one side of the upper end of the distillation column body 1. A feed pipe 6 is connected through to the lower end of the distillation column body 1. An air inlet pipe 7 is connected through to one side of the lower end of the distillation column body 1.

[0027] In the process of processing ethylene glycol diacetate in the distillation column, the ethylene glycol diacetate material to be separated and purified is first added into the interior of the distillation column body 1 through the feed pipe 6. Then, the liquid inlet pipe 5 is connected to the liquid supply pipe, and the gas inlet pipe 7 is connected to the steam supply pipe. Then, the rising steam and the reflux liquid flowing back from the top of the distillation column body 1 come into full contact on the column plate to separate and purify the ethylene glycol diacetate material. During operation, the position of the liquid collector 208 can be adjusted according to the liquid level through the lifting adjustment component 2. At the same time, the liquid under the packing support frame inside the distillation column body 1 can be scraped by the scraping component 3.

[0028] Please see Figure 1 , Figure 2 and Figure 3A distillation column for processing ethylene glycol diacetate includes a lifting and adjusting component 2 comprising an adjusting cylinder 201, a chute 202, a drive motor 203, a ball screw 204, a ball nut 205, a connecting seat 206, a pulley 207, a liquid collector 208, a guide plate 209, a connecting hose 210, a connecting pipe 211, and a liquid outlet pipe 212. The adjusting cylinder 201 is internally connected to the distillation column body 1. Chutes 202 are provided on both sides of the adjusting cylinder 201. The lower end of the chute 202 is fixedly connected to the drive motor 203 on the inner wall of the adjusting cylinder 201. The output shaft of the drive motor 203 is fixedly connected to the ball screw 204 via a coupling. 04. A ball nut 205 is fitted on the outer wall of the ball screw 204. A connecting seat 206 is fixedly connected to one side of the ball nut 205. A pulley 207 is slidably connected to the other side of the connecting seat 206 inside the slide groove 202. A liquid collector 208 is fixedly connected above the connecting seat 206. A guide plate 209 is fitted above the liquid collector 208. A connecting hose 210 is connected to the outlet of the liquid collector 208. A connecting pipe 211 is connected to the other end of the connecting hose 210. A liquid outlet pipe 212 is connected to the other end of the connecting pipe 211 and penetrates into the interior of the regulating cylinder 201.

[0029] Specifically: When the lifting and adjusting component 2 adjusts the position of the liquid collector 208, the drive motor 203 is first activated according to the liquid level. The drive motor 203 drives the ball screw 204 and the ball nut 205 to adjust the liquid collector 208 on the connecting seat 206 to a suitable position, thus providing the liquid collector 208 with a position adjustment function. The vertically adjustable liquid collector 208 can flexibly adjust its position according to the liquid level, ensuring the collection of liquids at different levels, improving separation efficiency, and ensuring the stable operation of the distillation process. When the connecting seat 206 is raised and lowered on the adjusting cylinder 201, the pulley 207 on the other side of the adjusting cylinder 201 slides on the slide groove 202, providing guidance for the liquid collector 208 on the connecting seat 206, thereby improving the lifting and lowering stability of the liquid collector 208. Subsequently, the dripping liquid will enter the liquid collector 208 through the guide plate 209 for collection, and finally be discharged from the outlet pipe 212 through the connecting hose 210.

[0030] Please see Figure 1 and Figure 4A distillation column for processing ethylene glycol diacetate includes a scraping component 3 comprising a column 301, a support 302, a servo motor 303, a connecting column 304, and scrapers 305. The column 301 is fixedly connected to the lower part of the internal packing support frame of the distillation column body 1. The support 302 is welded to the lower part of the inside of the column 301. The servo motor 303 is fixedly connected to the lower part of the support 302. The output shaft of the servo motor 303 is fixedly connected to the connecting column 304 through a coupling. Scrapers 305 are welded to the outer wall of the connecting column 304 at equal intervals, and the scrapers 305 are in contact with the lower part of the internal packing support frame of the distillation column body 1.

[0031] Specifically, when the scraping component 3 scrapes the liquid below the internal packing support frame of the distillation column body 1, the servo motor 303 is first activated, causing the servo motor 303 to drive the scraper 305 on the connecting column 304 to rotate, so as to scrape the liquid below the internal packing support frame of the distillation column body 1. This can better separate the liquid accumulated below the packing support frame for collection, thereby improving the liquid collection efficiency.

[0032] The working principle of this utility model is as follows: In the process of processing ethylene glycol diacetate in a distillation column, the ethylene glycol diacetate material to be separated and purified is first added into the distillation column body 1 through the feed pipe 6. Then, the liquid inlet pipe 5 is connected to the liquid supply pipe, and the gas inlet pipe 7 is connected to the steam supply pipe. Then, the rising steam and the reflux liquid flowing back from the top of the distillation column body 1 come into full contact on the column plate, so as to separate and purify the ethylene glycol diacetate material. During operation, the drive motor 203 can be started according to the liquid level, so that the drive motor 203 drives the ball screw 204 and the ball nut 205 to lift the liquid collector 208 on the connecting seat 206. After adjusting to a suitable position, the dripping liquid will enter the liquid collector 208 through the guide plate 209 for collection, and finally be discharged from the outlet pipe 212 through the connecting hose 210. At the same time, the servo motor 303 can be activated to drive the scraper 305 on the connecting column 304 to rotate, scraping the liquid under the internal packing support frame of the distillation column body 1 to drip into the liquid collector 208 for collection. This completes the working principle and workflow of a distillation column for ethylene glycol diacetate processing. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ethylene glycol diacetate processing rectification column characterized by, Including rectifying tower body (1) and lifting adjusting part (2), the inside of rectifying tower body (1) is provided with lifting adjusting part (2), lifting adjusting part (2) includes adjusting cylinder (201), chute (202), drive motor (203), ball screw (204), ball nut (205), connecting seat (206), pulley (207), liquid collector (208), guide plate (209), connecting hose (210), docking pipe (211) and liquid outlet pipe (212); The inside of rectifying tower body (1) is connected through adjusting cylinder (201), both sides of adjusting cylinder (201) are provided with chute (202), the lower end of chute (202) is fixedly connected with drive motor (203) on the inner wall of adjusting cylinder (201), the output shaft of drive motor (203) is fixedly connected with ball screw (204) through connecting shaft, ball screw (204) is installed on the outer wall of ball nut (205), one side of ball nut (205) is fixedly connected with connecting seat (206), the other side of connecting seat (206) is slidably connected with pulley (207) in the inside of chute (202), the upper of connecting seat (206) is fixedly connected with liquid collector (208).

2. The rectification column for processing ethylene glycol diacetate according to claim 1, characterized in that: The upper of liquid collector (208) is installed with guide plate (209), the water outlet of liquid collector (208) is connected with connecting hose (210).

3. The rectification column for processing ethylene glycol diacetate according to claim 2, characterized in that: The other end of connecting hose (210) is connected with docking pipe (211), the other end of docking pipe (211) is connected with liquid outlet pipe (212), and liquid outlet pipe (212) penetrates the inside of adjusting cylinder (201).

4. The rectification column for processing ethylene glycol diacetate according to claim 1, characterized in that: The lower of the inside of rectifying tower body (1) is provided with scraping part (3), scraping part (3) includes tower cylinder (301), support (302), servo motor (303), connecting column (304) and scraper (305).

5. The rectification column for processing ethylene glycol diacetate according to claim 4, characterized in that: The lower of the inside of rectifying tower body (1) is fixedly connected with tower cylinder (301), the lower of the inside of tower cylinder (301) is welded with support (302).

6. The rectification column for processing ethylene glycol diacetate according to claim 5, characterized in that: The lower of support (302) is fixedly connected with servo motor (303), the output shaft of servo motor (303) is fixedly connected with connecting column (304) through connecting shaft, the outer wall of connecting column (304) is welded with scraper (305) at equal intervals, and scraper (305) is attached to the lower of the inside of rectifying tower body (1).

7. The rectification column for processing ethylene glycol diacetate according to claim 1, characterized in that: The upper of rectifying tower body (1) is installed with waste gas pipe (4), one side of the upper of rectifying tower body (1) is connected through inlet pipe (5).

8. The rectification column for processing ethylene glycol diacetate according to claim 7, characterized in that: The lower of inlet pipe (5) is connected through feed pipe (6) in the inside of rectifying tower body (1), one side of the lower of rectifying tower body (1) is connected through air inlet pipe (7).

Images