Dehydration mechanism

Abstract

The utility model relates to the technical field of ethylene glycol dehydration, in particular to a dehydration mechanism which comprises a dehydration device, a dehydration tower shell and an outlet, the right end of the dehydration device is fixedly connected with the dehydration tower shell, the right end of the outer side of the dehydration tower shell is fixedly connected with the outlet, and the left end of the inner side of the outlet is fixedly connected with dust isolation cotton. The inner side of the lower end of the dehydrating tower shell is fixedly connected with a bearing, one side of the bearing is fixedly connected with a motor, the tail end of the upper side of the motor is fixedly connected with a rotating cylinder, the inner side of the upper end of the rotating cylinder is fixedly connected with a supporting rod, and the outer side of the rotating cylinder is fixedly connected with a scraper. The motor drives the rotating cylinder to rotate, so that the scraper on the outer side of the rotating cylinder clings to the inner wall of the dehydrating tower shell can clean and collect condensed coke into the collecting box, the interior of the dehydrating tower can be effectively decoked in the ethylene glycol dehydrating process, the heat transfer efficiency of the inner side of the dehydrating tower is enhanced, and the ethylene glycol extracting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of ethylene glycol dehydration technology, specifically a dehydration mechanism. Background Technology

[0002] The ethylene glycol dehydration unit uses ethylene and oxygen as raw materials. In the presence of silver catalyst, methane or nitrogen stabilizer and chloride inhibitor, ethylene is directly oxidized to produce ethylene oxide, which undergoes hydration reaction in a tubular reactor to produce ethylene glycol. The ethylene glycol solution is then concentrated by steam, dehydrated and fractionated to obtain ethylene glycol and other by-products.

[0003] Ethylene glycol is a heat-sensitive substance that decomposes easily at high temperatures during dehydration. The impurities from this decomposition tend to adhere to the walls of the dehydration tower, reducing its heat transfer efficiency. To ensure the water content at the bottom of the tower, the steam volume needs to be increased. However, increasing the steam volume accelerates coking. When coking reaches a certain level, the heat transfer rate decreases, necessitating decoking. This decoking process requires cooling the dehydration unit, significantly impacting the efficiency of ethylene glycol extraction. Therefore, a dehydration mechanism is proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a dehydration mechanism to solve the problem of coking inside the dehydration tower affecting the ethylene glycol extraction efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dehydration mechanism includes a dehydration device, a dehydration tower shell, and an outlet. The dehydration device is fixedly connected to the right end of the dehydration tower shell. An outlet is fixedly connected to the outer right end of the dehydration tower shell. A dust-proof cotton is fixedly connected to the inner left end of the outlet. A bearing is fixedly connected to the inner lower end of the dehydration tower shell. A motor is fixedly connected to one side of the bearing. A rotating cylinder is fixedly connected to the upper end of the motor. A support rod is fixedly connected to the inner upper end of the rotating cylinder. A scraper is fixedly connected to the outer side of the rotating cylinder. A hole is formed on the inner side of the scraper. A brush is fixedly connected to the lower end of the scraper. A dust-proof pad is fixedly connected to the outer lower end of the rotating cylinder. A rubber ring is fixedly connected to the lower end of the rotating cylinder. A rubber retaining ring is slidably connected to the outer side of the rubber ring. A dust outlet is formed at the lower end of the dehydration tower shell. A feeding pipe is fixedly connected to the lower end of the dust outlet. A collection box is fixedly connected to the lower end of the feeding pipe.

[0007] Preferably, there are four scrapers and four brushes, and the scrapers are evenly distributed on the outside of the rotating cylinder.

[0008] Preferably, the number of dust outlets, feed pipes, and collection boxes are all two, and they are symmetrically and evenly distributed at the lower end of the dehydration tower shell.

[0009] Preferably, the plane of the support rod is in the shape of a cross.

[0010] Preferably, there are several holes, and the holes are evenly distributed on the inner side of the scraper.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, a motor and a rotating drum are used. The motor drives the rotating drum to rotate, causing scrapers on the outer side of the rotating drum to be in close contact with the inner wall of the dehydration tower. During the rotation of the rotating drum, the scrapers cut off the coke condensed on the inner wall of the dehydration tower, causing it to detach from the inner wall and fall to the bottom of the dehydration tower. The rotating motion of the brush then cleans up the fallen coke and collects it into the collection box through the dust outlet. This effectively removes coke from the inside of the dehydration tower during the ethylene glycol dehydration process, enhances the heat transfer efficiency inside the dehydration tower, and thus improves the efficiency of ethylene glycol extraction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the dehydration tower shell structure of this utility model;

[0015] Figure 3 This utility model Figure 2 Schematic diagram of the installation structure at point A;

[0016] Figure 4 This utility model Figure 2 Schematic diagram of the structure at point B;

[0017] Figure 5 This is a top view of the rotating cylinder structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the rubber retaining ring structure of this utility model.

[0019] In the diagram: 1-Dehydration device, 2-Dehydration tower shell, 3-Outlet, 4-Feeding pipe, 5-Collection box, 6-Motor, 7-Support rod, 8-Rotating cylinder, 9-Scraper, 10-Hole, 11-Bearing, 12-Brush, 13-Dustproof pad, 14-Rubber ring, 15-Rubber retaining ring, 16-Dustproof cotton, 17-Dust outlet. Detailed Implementation

[0020] 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 only some 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Please see Figure 1-6 This utility model provides a technical solution:

[0023] A dehydration mechanism includes a dehydration device 1, a dehydration tower shell 2, and an outlet 3. The dehydration device 1 is fixedly connected to the right end of the dehydration tower shell 2. The outlet 3 is fixedly connected to the right end of the outer side of the dehydration tower shell 2. A dustproof cotton 16 is fixedly connected to the left end of the inner side of the outlet 3. A bearing 11 is fixedly connected to the inner side of the lower end of the dehydration tower shell 2. A motor 6 is fixedly connected to one side of the bearing 11. A rotating cylinder 8 is fixedly connected to the upper end of the motor 6. A support rod 7 is fixedly connected to the inner side of the upper end of the rotating cylinder 8. A scraper 9 is fixedly connected to the outer side of the rotating cylinder 8. A hole 10 is opened on the inner side of the scraper 9. A brush 12 is fixedly connected to the lower end of the scraper 9. A dustproof pad 13 is fixedly connected to the outer side of the lower end of the rotating cylinder 8. A rubber ring 14 is fixedly connected to the lower end of the rotating cylinder 8. A rubber retaining ring 15 is slidably connected to the outer side of the rubber ring 14. A dust outlet 17 is opened at the lower end of the dehydration tower shell 2. A feeding pipe 4 is fixedly connected to the lower end of the dust outlet 17. A collection box 5 is fixedly connected to the lower end of the feeding pipe 4.

[0024] There are four scraper blades 9 and four brushes 12. The scraper blades 9 are evenly distributed on the outside of the rotating drum 8, which makes it easier to clean the coke inside the dehydration tower shell 2 more thoroughly. There are two dust outlets 17, two feed pipes 4, and two collection boxes 5. They are symmetrically and evenly distributed at the lower end of the dehydration tower shell 2, which makes it easier to collect the coke that falls off the scraper blades 9. The support rod 7 has a "+" shape in its plane, which can fix the upper end of the rotating drum 8. There are several holes 10, which are evenly distributed on the inside of the scraper blades 9, which helps to reduce the wind resistance generated during the rotation of the rotating drum 8.

[0025] Working Process: During operation, the equipment is powered by an external power supply. During the operation of the dehydration unit 1, the motor 6 rotates on the inner side of the lower end of the dehydration tower shell 2 via a bearing 11 fixedly connected to it. While the motor 6 rotates, the rotating cylinder 8, fixedly connected to its main shaft, rotates inside the dehydration tower shell 2. Simultaneously, a scraper 9, fixedly connected to the outer side of the rotating cylinder 8, rotates close to the inner wall of the dehydration tower shell 2. The coke adhering to the inner wall of the dehydration tower shell 2 is removed by the scraper 9. The scraper 9 has several holes 10 on its inner side, which minimize the centrifugal force generated when the motor 6 drives the rotating cylinder 8 to rotate, thus reducing the impact of the scraper 9's coke removal process on the internal ethylene glycol dehydration. The coke removed from the inner wall of the dehydration tower shell 2 by the scraper 9 falls to the bottom of the dehydration tower shell 2, and then is fixedly connected to the lower end of the scraper 9... The brush 12 rotates simultaneously with the rotating drum 8 and the scraper 9, thus cleaning the coke that falls to the bottom of the dehydration tower shell 2. During the cleaning process, the brush 12 also cleans the coke from the dust outlet 17 on the inner side of the bottom of the dehydration tower shell 2 into the inner side of the collection box 5. This prevents impurities from the high-temperature decomposition of ethylene glycol during the dehydration process from adhering to the inner side of the dehydration tower shell 2, thereby reducing its heat transfer efficiency and decreasing the yield and purity of ethylene glycol. The rubber ring 14 fixedly connected to the lower end of the rotating drum 8 rotates and slides inside the rubber retaining ring 15 during the rotation of the rotating drum 8 driven by the motor 6. This effectively prevents ethylene glycol from leaking from the connection between the motor shaft of the motor 6 and the dehydration tower shell 2 during the dehydration process. A dust-proof pad 13 is provided on the outer side of the lower end of the rotating drum 8. During the cleaning process of the brush 12, it can effectively prevent coke from falling into the gap between the rubber ring 14 and the rubber retaining ring 15, thereby affecting the operation of the rotating drum 8.

[0026] 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. A dehydration mechanism, comprising a dehydration device (1), a dehydration tower shell (2), and an outlet (3), characterized in that: The dehydration device (1) is fixedly connected to a dehydration tower shell (2) at its right end. An outlet (3) is fixedly connected to the outer right end of the dehydration tower shell (2). A dust-proof cotton (16) is fixedly connected to the inner left end of the outlet (3). A bearing (11) is fixedly connected to the inner lower end of the dehydration tower shell (2). A motor (6) is fixedly connected to one side of the bearing (11). A rotating cylinder (8) is fixedly connected to the upper end of the motor (6). A support rod (7) is fixedly connected to the inner upper end of the rotating cylinder (8). A scraper (9) is fixedly connected to the outer side of the rotating cylinder (8). The scraper (9) has a hole (10) on its inner side. A brush (12) is fixedly connected to the lower end of the scraper (9). A dustproof pad (13) is fixedly connected to the lower outer side of the rotating cylinder (8). A rubber ring (14) is fixedly connected to the lower end of the rotating cylinder (8). A rubber retaining ring (15) is slidably connected to the outer side of the rubber ring (14). A dust outlet (17) is opened at the lower end of the dehydration tower shell (2). A feed pipe (4) is fixedly connected to the lower end of the dust outlet (17). A collection box (5) is fixedly connected to the lower end of the feed pipe (4).

2. The dehydration mechanism according to claim 1, characterized in that: The number of scrapers (9) and brushes (12) is 4 each, and the scrapers (9) are evenly distributed on the outside of the rotating cylinder (8).

3. The dehydration mechanism according to claim 1, characterized in that: The number of dust outlets (17), feed pipes (4), and collection boxes (5) are all two, and they are symmetrically and evenly distributed at the lower end of the dehydration tower shell (2).

4. The dehydration mechanism according to claim 1, characterized in that: The plane of the support rod (7) is in the shape of a cross.

5. A dehydration mechanism according to claim 1, characterized in that: There are several holes (10), and the holes (10) are evenly distributed on the inner side of the scraper (9).

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