Glycerin triacetate anti-accumulation esterification reaction device

Abstract

The utility model relates to the technical field of esterification reaction, and particularly discloses a glycerol triacetate anti-accumulation esterification reaction device which comprises a reaction box, the reaction box is arranged to be a cylindrical shell with a semicircular structure at the bottom, and a motor is mounted on the surface of the reaction box; a feeding box is mounted on the surface of the reaction box, a rotating mechanism is arranged in the reaction box, and the rotating mechanism comprises a first rotating rod and a second rotating rod which are rotationally mounted in the reaction box, and a first stirring rod is connected to the surface of the first rotating rod. According to the glycerol triacetate anti-accumulation esterification reaction device, the rotating mechanism is arranged, internal raw materials can be prevented from being accumulated, a motor drives a first rotating rod and a second rotating rod to rotate at the same time through a gear, a first stirring rod and a second stirring rod inside rotate at the same time, the internal raw materials are stirred more sufficiently, the raw materials make full contact with a catalyst, and the esterification reaction efficiency is improved. And meanwhile, the scraping plate can drive the catalyst on the surface of the bearing plate to be thrown out.

Description

Technical Field

[0001] This utility model relates to the field of esterification reaction technology, specifically to a device for preventing the accumulation of triacetin in esterification reaction. Background Technology

[0002] Triacetin is an organic compound, a colorless and odorless oily liquid, miscible with ethanol, ether, chloroform, and benzene, and slightly soluble in water and carbon disulfide. It is used as a cigarette filter binder, flavor fixative, solvent, toughening agent, and in the cosmetics, casting, pharmaceutical, and dye industries. This product is non-toxic and non-irritating. Esterification is a type of organic chemical reaction, primarily involving the reaction of alcohols with carboxylic acids or inorganic oxyacids to form esters and water. Triacetin is prepared through the esterification of glycerol with acetic acid. In this reaction, glycerol reacts with glacial acetic acid under the catalysis of concentrated sulfuric acid to produce triacetin and water. To improve reaction efficiency, glacial acetic acid is usually used in excess, and a dehydrating agent is used to remove the generated water, promoting the reaction towards the formation of triacetin. However, existing reaction apparatus is prone to clogging the reactor with triacetin, leading to uneven contact between triacetin and the catalyst, thus affecting the reaction rate. Utility Model Content

[0003] The purpose of this invention is to provide a triacetin anti-accumulation esterification reaction device to solve the problems mentioned in the background art, such as the easy blockage of triacetin inside the reaction vessel, the uneven contact between triacetin and the catalyst, and the impact on the reaction rate of the device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a triacetin anti-accumulation esterification reaction device, comprising a reaction chamber, wherein the reaction chamber is configured as a cylindrical shell with a semi-circular bottom structure, and a motor is installed on the surface of the reaction chamber;

[0005] A feed box is installed on the surface of the reaction chamber. A rotating mechanism is installed inside the reaction chamber, and the rotating mechanism includes: a rotating rod 1 and a rotating rod 2 rotatably installed inside the reaction chamber, and a stirring rod 1 is connected to the surface of the rotating rod 1; a stirring rod 2 is rotatably installed on the surface of the rotating rod 2; a rotating rod 3 rotatably installed inside the reaction chamber, and a scraper is connected to the bottom of the rotating rod 3; the ends of the rotating rod 1, rotating rod 2 and rotating rod 3 pass through the reaction chamber and are connected to gears; the end of the rotating rod 1 is connected to the output shaft of a motor; and a receiving plate is installed on the inner wall of the reaction chamber.

[0006] Preferably, the first rotating rod, the second rotating rod, and the third rotating rod are all rotatably connected to the reaction chamber, and the three gears are meshed together.

[0007] Using the above technical solution, the motor drives the first rotating rod to rotate, which in turn drives the second and third rotating rods to rotate simultaneously via gears.

[0008] Preferably, the first stirring rod and the second stirring rod are symmetrically arranged inside the reaction chamber, and the positions of the first stirring rod and the second stirring rod are staggered.

[0009] Using the above technical solution, stirring rod one and stirring rod two simultaneously stir the raw materials, thereby increasing the stirring rate of the device.

[0010] Preferably, the bottom of the scraper is in contact with the surface of the receiving plate, and the scrapers are slidably connected.

[0011] Using the above technical solution, the scraper can spray the added catalyst, which can quickly integrate the catalyst with the raw materials.

[0012] Preferably, the feed box has a movable structure inside, and the movable mechanism includes: an observation plate embedded in the surface of the feed box, and magnet one and magnet two symmetrically attached to both sides of the observation plate, and a pressure sensor connected to the surface of magnet two; a pipe connected to the bottom of the feed box, and the end of the pipe inserted into the reaction chamber, and an electromagnetic control valve installed on the pipe; and a sliding rod installed inside the feed box, with a float slidably mounted on the surface of the sliding rod.

[0013] Using the above technical solution, a catalyst is quantitatively added via a moving mechanism.

[0014] Preferably, the first magnet and the second magnet are magnetically connected, the first magnet and the second magnet are slidably connected to the observation plate, and the surface of the observation plate is provided with scale.

[0015] Using the above technical solution, move magnet one, so that magnet one drives magnet two to move through magnetic force.

[0016] Preferably, the slide bar and the float are slidably connected, and the float is positioned corresponding to the pressure sensor.

[0017] Using the above technical solution, when the catalyst enters the feed box, the float can move upward on the slide bar surface as the liquid level rises.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the triacetin anti-accumulation esterification reaction device:

[0019] 1. A rotating mechanism is provided to prevent the accumulation of raw materials inside. The motor drives the rotating rod one and rotating rod two to rotate simultaneously through gears, so that the internal stirring rod one and stirring rod two rotate simultaneously, which can more thoroughly stir the raw materials inside, make full contact between the raw materials and the catalyst, and improve the practicality of the device. At the same time, the scraper can drive the catalyst on the surface of the receiving plate to be sprayed out.

[0020] 2. A movable structure is set up to facilitate the quantitative addition of catalyst. The movable magnet one, through magnet two, drives the pressure sensor to move to the mark for adding catalyst. The catalyst is poured into the feed box, and the float moves upward as the catalyst pressure surface rises. The end of the float presses against the pressure sensor, and the pressure sensor opens the electromagnetic control valve through the control device, injecting catalyst into the reaction tank. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the installation of the electromagnetic control valve of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the installation of the stirring rod of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the observation plate installation of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the internal installation of the feed box of this utility model.

[0026] In the diagram: 10, reaction chamber; 20, motor;

[0027] 30. Rotating rod one; 301. Gear; 302. Rotating rod two; 303. Rotating rod three; 304. Stirring rod one; 305. Stirring rod two; 306. Scraper; 307. Receiving plate;

[0028] 40. Feed box; 401. Observation plate; 402. Pipeline; 403. Electromagnetic control valve; 404. Magnet one; 405. Magnet two; 406. Pressure sensor; 407. Slide bar; 408. Float. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-5 This utility model provides a technical solution: a triacetin anti-accumulation esterification reaction device, including a reaction chamber 10, a motor 20, a rotating rod 1 30, a gear 301, a rotating rod 2 302, a rotating rod 303, a stirring rod 1 304, a stirring rod 2 305, a scraper 306, a receiving plate 307, a feed box 40, an observation plate 401, a pipe 402, an electromagnetic control valve 403, a magnet 1 404, a magnet 2 405, a pressure sensor 406, a sliding rod 407, and a float 408;

[0031] The esterification reaction apparatus for triacetin prevents raw materials from accumulating inside and improves stirring efficiency. The specific implementation method is as follows:

[0032] The reaction chamber 10 is a cylindrical shell with a semi-circular bottom, and a motor 20 is mounted on the surface of the reaction chamber 10. A feed box 40 is mounted on the surface of the reaction chamber 10. A rotating mechanism is provided inside the reaction chamber 10, and the rotating mechanism includes: a rotating rod 30 and a rotating rod 302 rotatably mounted inside the reaction chamber 10, with a stirring rod 304 connected to the surface of the rotating rod 30, a stirring rod 305 rotatably mounted to the surface of the rotating rod 302, and a rotating rod 303 rotatably mounted inside the reaction chamber 10, with a scraper 306 connected to the bottom of the rotating rod 303. The rotating rods 30, 30, 30, and 303 are... The end of 03 passes through the reaction chamber 10 and is connected to gear 301. The end of rotating rod 30 is connected to the output shaft of motor 20. A receiving plate 307 is installed on the inner wall of the reaction chamber 10. Rotating rod 30, rotating rod 2 302 and rotating rod 303 are all rotatably connected to the reaction chamber 10. The three gears 301 are meshed together. Stirring rod 1 304 and stirring rod 2 305 are symmetrically arranged inside the reaction chamber 10, and the positions of stirring rod 1 304 and stirring rod 2 305 are staggered. The bottom of scraper 306 is in contact with the surface of receiving plate 307, and scraper 306 and receiving plate 307 are slidably connected.

[0033] The raw materials are fed into the reaction chamber 10 through the opening. The motor 20 is started, and the motor 20 drives the rotating rod 30 to rotate. At this time, the rotating rod 30 drives the gear 301 on its surface to rotate, so that the three gears 301 are engaged with each other. The three gears 301 simultaneously drive the rotating rod 30, the rotating rod 302, and the rotating rod 303 to rotate. The rotating rod 30 drives the stirring rod 304 to rotate, and the rotating rod 302 drives the stirring rod 305 to rotate. Due to the meshing of the gears 301, the stirring rod 305 rotates in the opposite direction to the stirring rod 304. The stirring rod 305 and the stirring rod 304 simultaneously stir the inside, improving the stirring efficiency of the device. When the rotating rod 303 rotates, it drives the scraper 306 at the bottom to rotate. When the catalyst falls onto the surface of the receiving plate 307, the rotating rod 303 moves to the surface of the receiving plate 307 through the scraper 306, sweeping the catalyst off the surface of the receiving plate 307 and scattering the catalyst into the inside of the reaction chamber 10, improving the catalyst mixing efficiency.

[0034] The apparatus for the esterification reaction of triacetin facilitates the quantitative addition of the ester. The specific implementation method is as follows:

[0035] The feed box 40 has an internal moving structure, which includes: an observation plate 401 embedded in the surface of the feed box 40, and magnets 404 and 405 symmetrically attached to both sides of the observation plate 401. A pressure sensor 406 is connected to the surface of magnet 405. A pipe 402 is connected to the bottom of the feed box 40, and the end of the pipe 402 is inserted into the reaction chamber 10. An electromagnetic control valve 403 is installed on the pipe 402. A slide rod 407 is installed inside the feed box 40, and a float 408 is slidably mounted on the surface of the slide rod 407. Magnets 404 and 405 are magnetically connected. Magnets 404 and 405 are slidably connected to the observation plate 401. The surface of the observation plate 401 is marked with graduations. The slide rod 407 and the float 408 are slidably connected. The float 408 is positioned corresponding to the pressure sensor 406.

[0036] The handheld magnet 404 is moved, causing it to move magnet 405 via magnetic force. Magnets 404 and 405 slide along the surface of the observation plate 401 until magnet 404 reaches the mark where catalyst needs to be added. At this point, magnet 405 moves pressure sensor 406 to that mark. The movement of magnet 404 is then stopped, and catalyst is poured into the feed tank 40. The float 408 floats on the surface of the catalyst. As the catalyst level rises, the float 408 moves upward, sliding on the surface of the slide rod 407. When the top of the float 408 contacts the bottom of pressure sensor 406, it applies pressure. Pressure sensor 406 then opens the electromagnetic control valve 403 via the control device, allowing the catalyst from the feed tank 40 to enter the reaction tank 10 through pipe 402. The catalyst then falls onto the surface of the receiving plate 307. Simultaneously, pressure sensor 406 alerts the user that catalyst addition is complete via the control device.

[0037] Working principle: When using this triacetin anti-accumulation esterification reaction device, gears 301, rotating rod 2 302, rotating rod 303, stirring rod 1 304, and stirring rod 2 305 are set to prevent raw materials from accumulating inside and improve stirring efficiency. Magnets 1 404, Magnetics 2 405, pressure sensor 406, slide rod 407, and float 408 are set to facilitate quantitative addition and increase overall practicality.

[0038] 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 triacetin anti-caking esterification reaction device, comprising a reaction box (10) arranged as a cylindrical shell with a bottom semicircular structure, and a motor (20) mounted on the surface of the reaction box (10). characterized in that A feeding box (40) is mounted on the surface of the reaction box (10), and a rotating mechanism is arranged in the reaction box (10), wherein the rotating mechanism comprises a rotating rod I (30) and a rotating rod II (302) rotatably mounted in the reaction box (10), a stirring rod I (304) connected to the surface of the rotating rod I (30), a stirring rod II (305) rotatably mounted on the surface of the rotating rod II (302), a rotating rod III (303) rotatably mounted in the reaction box (10), and a scraper (306) connected to the bottom of the rotating rod III (303), the ends of the rotating rod I (30), the rotating rod II (302), and the rotating rod III (303) penetrating through the reaction box (10) and connected with a gear (301), the end of the rotating rod I (30) connected with the output shaft of the motor (20), and a receiving plate (307) mounted on the inner wall of the reaction box (10).

2. A device for preventing accumulation in a reaction of esterification of triacetin according to claim 1, characterized in that: The rotating rod I (30), the rotating rod II (302), and the rotating rod III (303) are rotatably connected with the reaction box (10), and the three gears (301) are meshingly connected.

3. A device for preventing accumulation in a reaction of esterification of triacetin according to claim 1, characterized in that: The stirring rod I (304) and the stirring rod II (305) are symmetrically arranged in the reaction box (10), and the positions of the stirring rod I (304) and the stirring rod II (305) are staggered.

4. A device for preventing accumulation in esterification of triacetin according to claim 1, characterized in that: The bottom of the scraper (306) is attached to the surface of the receiving plate (307), and the scraper (306) and the receiving plate (307) are slidably connected.

5. A device for preventing accumulation in esterification of triacetin according to claim 1, characterized in that: A moving mechanism is arranged in the feeding box (40), and the moving mechanism comprises an observation plate (401) inlaidly mounted on the surface of the feeding box (40), magnet I (404) and magnet II (405) symmetrically attached to the two sides of the observation plate (401), a pressure sensor (406) connected to the surface of the magnet II (405), a pipeline (402) connected to the bottom surface of the feeding box (40), the end of the pipeline (402) inserted into the reaction box (10), an electromagnetic control valve (403) mounted on the pipeline (402), a slide rod (407) mounted in the feeding box (40), and a float (408) slidably mounted on the surface of the slide rod (407).

6. A device for preventing accumulation in a reaction of esterification of triacetin according to claim 5, characterized in that: The magnet I (404) and the magnet II (405) are magnetically connected, the magnet I (404) and the magnet II (405) are slidably connected with the observation plate (401) respectively, and a scale is arranged on the surface of the observation plate (401).

7. A device for preventing accumulation in a reaction of esterification of triacetin according to claim 5, characterized in that: The slide rod (407) and the float (408) are slidably connected, and the float (408) is arranged corresponding to the position of the pressure sensor (406).

Images