A dioxane cyclization reactor with uniform feeding

Abstract

The utility model discloses a dioxane cyclization reaction kettle with uniform feeding. A kettle cover is arranged on the top of a kettle body, a motor seat is arranged at the center position of the upper surface of the kettle cover, a motor is arranged on the upper surface of the motor seat, an output shaft of the motor is connected with the top of a main shaft through a coupling, a stirring paddle is arranged at the lower part of the main shaft, the stirring paddle is arranged in the kettle body, a jacket is wrapped on the outside of the kettle body, a discharge port is arranged at the bottom of the kettle body, a diethylene glycol feed port and a sulfuric acid feed port are arranged on both sides of the upper surface of the kettle cover located on the motor seat, a semicircular enclosure is arranged at the diethylene glycol feed port and the sulfuric acid feed port on the lower surface of the kettle cover, and a perforated plate is arranged at the bottom of the semicircular enclosure. The utility model has a reasonable structure, a semicircular enclosure is arranged at the diethylene glycol feed port and the sulfuric acid feed port on the lower surface of the kettle cover, and a perforated plate is arranged at the bottom of the semicircular enclosure. When diethylene glycol and sulfuric acid are fed, dispersed and uniform feeding can be achieved through the perforated plate, thereby improving the reaction efficiency and effect of diethylene glycol and sulfuric acid.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to a dioxane cyclization reaction kettle with uniform material feeding. Background Art

[0002] Dioxane generally refers to 1,4-dioxane, also known as 1,4-dioxane, which is an organic compound with the chemical formula C4H8O2. It is mainly used as a solvent for nitrocellulose, celluloid, cellulose resin, vegetable oil, mineral oil and oil-soluble dyes. It is also used in the manufacture of spray paint, varnish, plasticizer, wetting agent, polishing agent, paint stripper, fragrance, preservative, fumigant disinfectant, deodorant and medical supplies.

[0003] When dioxane is synthesized, diethylene glycol and sulfuric acid are first used for cyclization reaction, followed by neutralization, slag removal, distillation dehydration, and rectification, and finally the dioxane product is obtained. At present, when the dioxane cyclization reactor with uniform feeding is used, diethylene glycol and sulfuric acid directly flow into the reactor body through the feed port. Due to the uneven feeding, the cyclization time is increased and the efficiency is reduced. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a dioxane cyclization reactor with uniform feeding. A semicircular enclosure is arranged at the diethylene glycol feed port and the sulfuric acid feed port on the lower surface of the reactor cover. A perforated plate is arranged at the bottom of the semicircular enclosure. When diethylene glycol and sulfuric acid are fed, the perforated plate can realize uniform and dispersed feeding, thereby improving the reaction efficiency and effect of diethylene glycol and sulfuric acid, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a dioxane cyclization reaction kettle with uniform feeding, comprising a kettle body, a kettle cover, a motor, a main shaft, a stirring paddle, a jacket, a semicircular enclosure and a perforated plate, wherein a kettle cover is arranged on the top of the kettle body, a motor seat is arranged at the center position of the upper surface of the kettle cover, a motor is arranged on the upper surface of the motor seat, the output shaft of the motor is connected to the top of the main shaft through a coupling, a stirring paddle is arranged on the lower part of the main shaft, the stirring paddle is arranged in the kettle body, the outer side of the kettle body is wrapped with a jacket, a discharge port is arranged at the bottom of the kettle body, a diethylene glycol feed port and a sulfuric acid feed port are arranged on both sides of the motor seat on the upper surface of the kettle cover, semicircular enclosures are arranged on the lower surface of the kettle cover at the diethylene glycol feed port and the sulfuric acid feed port, and a perforated plate is arranged at the bottom of the semicircular enclosure.

[0006] Preferably, the utility model provides a dioxane cyclization reaction kettle with uniform material feeding, wherein a thermometer port and a pressure gauge port are further provided on the upper surface of the kettle body and at a position staggered from the semicircular enclosure.

[0007] Preferably, the utility model provides a dioxane cyclization reaction kettle with uniform material feeding, wherein a plurality of support seats are evenly arranged on the outside of the jacket.

[0008] Preferably, the utility model provides a dioxane cyclization reaction kettle with uniform feeding, wherein the upper portion of the jacket is provided with an air outlet, and the lower portion of the jacket is provided with an air inlet and a condensate discharge port.

[0009] Preferably, the utility model provides a dioxane cyclization reaction kettle with uniform material feeding, wherein a flange is provided on the top of the semicircular enclosure, and the semicircular enclosure is connected to the lower surface of the kettle cover through the flange and bolts.

[0010] Preferably, the utility model provides a dioxane cyclization reaction kettle with uniform material feeding, wherein the orifice plate is connected to the bottom of the semicircular enclosure plate by bolts.

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

[0012] The lower surface of the kettle cover is provided with a semicircular enclosure at the diethylene glycol feed port and the sulfuric acid feed port, and a perforated plate is provided at the bottom of the semicircular enclosure. When diethylene glycol and sulfuric acid are fed, the perforated plate can achieve uniformly dispersed feeding, thereby improving the reaction efficiency and effect of diethylene glycol and sulfuric acid. In addition, the use of the semicircular enclosure can maximize the distribution area, thereby increasing the distribution area of ​​diethylene glycol and sulfuric acid dripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the kettle cover when viewed from above;

[0015] Figure 3 This is a schematic diagram of the kettle cover structure viewed from above (the orifice plate is not shown).

[0016] In the figure: kettle body 1, kettle cover 2, motor 3, main shaft 4, stirring paddle 5, jacket 6, semicircular enclosure 7, orifice plate 8, motor base 9, discharge port 10, diethylene glycol feed port 11, sulfuric acid feed port 12, thermometer port 13, pressure gauge port 14, support base 15, air outlet 16, air inlet 17, condensate discharge port 18, flange 19. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0018] It should be noted that, in the description of the present invention, the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0019] See also Figure 1-3 The utility model provides a technical solution: a dioxane cyclization reactor with uniform feeding, comprising a reactor body 1, a reactor cover 2, a motor 3, a main shaft 4, a stirring paddle 5, a jacket 6, a semicircular enclosure 7 and a perforated plate 8, a reactor cover 2 is arranged on the top of the reactor body 1, a motor seat 9 is arranged at the center position of the upper surface of the reactor cover 2, a motor 3 is arranged on the upper surface of the motor seat 9, an output shaft of the motor 3 is connected to the top of the main shaft 4 through a coupling, a stirring paddle 5 is arranged at the lower part of the main shaft 4, the stirring paddle 5 is arranged in the reactor body 1, the outside of the reactor body 1 is wrapped with a jacket 6, and a plurality of support seats 15 are evenly arranged on the outside of the jacket 6 to achieve overall fixation and support, an air outlet 16 is arranged on the upper part of the jacket 6, an air inlet 17 and a condensate discharge port 18 are arranged on the lower part of the jacket 6, high-temperature gas is allowed to enter through the air inlet 17, the air outlet 16 is used for gas discharge, and condensate discharge The outlet 18 is used to discharge the condensate. A discharge port 10 is provided at the bottom of the kettle body 1. A diethylene glycol feed port 11 and a sulfuric acid feed port 12 are provided on both sides of the upper surface of the kettle cover 2 located on the motor base 9. A semicircular enclosure 7 is provided at the diethylene glycol feed port 11 and the sulfuric acid feed port 12 on the lower surface of the kettle cover 2. A flange 19 is provided on the top of the semicircular enclosure 7. The semicircular enclosure 7 is connected to the lower surface of the kettle cover 2 through the flange 19 and bolts. The connection structure facilitates the installation and disassembly of the semicircular enclosure 7. A perforated plate 8 is provided at the bottom of the semicircular enclosure 7. The orifice plate 8 is connected to the bottom of the semicircular enclosure 7 through bolts. The connection structure facilitates the installation and disassembly of the orifice plate 8. A thermometer port 13 and a pressure gauge port 14 are also provided on the upper surface of the kettle body 1 and staggered at the position of the semicircular enclosure 7, which are used for the installation of a thermometer and a pressure gauge, so as to monitor the temperature and pressure inside the kettle body 1 in real time.

[0020] Installation method and use principle: The semicircular enclosure 7 is installed on the lower surface of the kettle cover 2 through the flange 19 and bolts. At this time, the semicircular enclosure 7 is located at the diethylene glycol feed port 11 and the sulfuric acid feed port 12, and then the orifice plate 8 is installed on the bottom of the semicircular enclosure 7 through bolts. Then the motor 3 is installed on the upper surface of the motor seat 9, and the top of the main shaft 4 passes through the kettle cover 2 and is connected to the output shaft of the motor 3 through the coupling. Finally, the kettle cover 2 is placed on the top of the kettle body 1 and fastened with bolts to complete the installation. When in use, the diethylene glycol feed port 11 is connected to the diethylene glycol feeding pipeline, and the sulfuric acid feed port 12 is connected to the sulfuric acid feeding pipeline. Diethylene glycol and sulfuric acid are respectively fed into the kettle body 1 from the diethylene glycol feed port 11 and the sulfuric acid feed port 12, first enter the corresponding semicircular enclosure 7 and fall onto the orifice plate 8, and then fall evenly into the kettle body 1 through the small holes of the orifice plate 8. Then, the motor 3 is started, the motor 3 drives the main shaft 4 to rotate, the main shaft 4 drives the stirring paddle 5 to rotate, and the high-temperature gas enters the jacket 6 from the air inlet 17, thereby realizing the heating of the inside of the kettle body 1, thereby realizing the cyclization reaction. The utility model has a reasonable structure. The lower surface of the kettle cover 2 is provided with a semicircular enclosure 7 at the diethylene glycol feed port 11 and the sulfuric acid feed port 12. A perforated plate 8 is provided at the bottom of the semicircular enclosure 7. When diethylene glycol and sulfuric acid are fed, the perforated plate 8 can realize dispersed and uniform feeding, thereby improving the reaction efficiency and effect of diethylene glycol and sulfuric acid. In addition, the semicircular enclosure 7 is adopted to increase the distribution area as much as possible, thereby increasing the distribution area of ​​diethylene glycol and sulfuric acid dripping.

[0021] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0022] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A dioxane cyclization reactor with uniform feeding, characterized in that: The invention comprises a kettle body (1), a kettle cover (2), a motor (3), a main shaft (4), a stirring paddle (5), a jacket (6), a semicircular enclosure (7) and a perforated plate (8), wherein the kettle body (1) is provided with a kettle cover (2) on the top, a motor seat (9) is provided at the center of the upper surface of the kettle cover (2), a motor (3) is provided on the upper surface of the motor seat (9), an output shaft of the motor (3) is connected to the top of the main shaft (4) through a coupling, a stirring paddle (5) is provided at the bottom of the main shaft (4), and the stirring paddle (5) is provided at the bottom of the main shaft (4). The stirring paddle (5) is arranged in the kettle body (1). The outside of the kettle body (1) is wrapped with a jacket (6). The bottom of the kettle body (1) is provided with a discharge port (10). The upper surface of the kettle cover (2) is provided with a diethylene glycol feed port (11) and a sulfuric acid feed port (12) on both sides of the motor base (9). The lower surface of the kettle cover (2) is provided with a semicircular enclosure (7) at the diethylene glycol feed port (11) and the sulfuric acid feed port (12). The bottom of the semicircular enclosure (7) is provided with a perforated plate (8).

2. A dioxane cyclization reaction kettle with uniform feeding according to claim 1, characterized in that: A thermometer port (13) and a pressure gauge port (14) are also provided on the upper surface of the kettle body (1) at a position offset from the semicircular enclosure plate (7).

3. A dioxane cyclization reaction kettle with uniform feeding according to claim 1, characterized in that: A plurality of support seats (15) are evenly arranged on the outside of the jacket (6).

4. The dioxane cyclization reactor with uniform feeding according to claim 1, characterized in that: The upper portion of the jacket (6) is provided with an air outlet (16), and the lower portion of the jacket (6) is provided with an air inlet (17) and a condensate discharge outlet (18).

5. The dioxane cyclization reaction kettle with uniform feeding according to claim 1, characterized in that: A flange (19) is provided on the top of the semicircular enclosure (7), and the semicircular enclosure (7) is connected to the lower surface of the kettle cover (2) via the flange (19) and bolts.

6. The dioxane cyclization reaction kettle with uniform feeding according to claim 1, characterized in that: The orifice plate (8) is connected to the bottom of the semicircular enclosure plate (7) via bolts.

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