Azelaic acid dissolving and crystallizing integrated kettle

Abstract

A kettle cover is arranged at the top end of a kettle body, a motor base is arranged on the upper surface of the kettle cover, the interior of the motor base is divided into a middle inner cavity and two side edge inner cavities through a partition plate, and a middle motor is arranged at the position, located in the middle inner cavity, of the upper surface of the motor base. An output shaft of the middle motor is connected with the top end of a middle main shaft through a coupler, the bottom of the middle main shaft is connected with a crystallization stirring paddle through a coupler, an output shaft of the side motor is connected with the top end of a side main shaft, and the bottom of the side main shaft is connected with a dissolution stirring paddle; the reaction kettle disclosed by the utility model is reasonable in structure, and the crystallization stirring paddle and the dissolution stirring paddle are respectively driven by the middle motor and the side motor to rotate, so that one reaction kettle can simultaneously realize dissolution and crystallization processes, on one hand, the cost is saved, on the other hand, the conveying time is saved, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to an azelaic acid dissolution and crystallization integrated kettle. Background Art

[0002] Azelaic acid is an organic compound with the molecular formula C9H16O4. It appears as white to slightly yellow monoclinic prisms, needle-shaped crystals or powder. It is used as a plasticizer and in alkyd resins, paints and chemical synthesis. It is irritating to the skin, eyes, mucous membranes and upper respiratory tract, and is harmful to the body if inhaled or ingested. It is harmful to the environment and can cause pollution to water bodies and the atmosphere.

[0003] The manufacturing process of azelaic acid is as follows: phase transfer, adding potassium permanganate aqueous solution, heat preservation reaction, acid adjustment, filtration, reduced pressure recovery, dissolution, cooling crystallization, centrifugal separation, and finally obtaining azelaic acid crude product. Among them, dissolution and cooling crystallization are necessary steps. At present, the dissolution and cooling crystallization steps are processed separately by a dissolution kettle and a crystallization kettle, and after dissolution, they are transported to the crystallization kettle through a conveying pipeline. The traditional method uses two separate kettles, which increases the cost and reduces the transportation efficiency. Therefore, an improved technology is urgently needed to solve this problem in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated kettle for dissolving and crystallizing azelaic acid. A motor seat is arranged on the upper surface of the kettle cover, and an intermediate motor and two side motors are arranged on the upper surface of the motor seat. The crystallization stirring paddle and the dissolution stirring paddle are driven to rotate by the intermediate motor and the side motor respectively, so that one reactor can realize the dissolution and crystallization processes at the same time, without the need to use separate dissolution kettle and crystallization kettle. On the one hand, it saves costs, and on the other hand, it saves transportation time and improves efficiency, 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 solutions: an integrated kettle for dissolving and crystallizing azelaic acid, comprising a kettle body, a jacket, a kettle cover, a motor seat, a middle motor, a side motor, a crystallization stirring paddle, and a dissolving stirring paddle, wherein the outside of the kettle body is wrapped with a jacket, a kettle cover is provided at the top of the kettle body, a motor seat is provided on the upper surface of the kettle cover, the interior of the motor seat is divided into a middle inner cavity and two side inner cavities by a partition, an middle motor is provided on the upper surface of the motor seat at the middle inner cavity, and a side motor is provided on the upper surface of the motor seat at the side inner cavity The output shaft of the middle motor is connected to the top of the middle main shaft through a coupling, the bottom of the middle main shaft is connected to the crystallization stirring paddle through a coupling, the output shaft of the side motor is connected to the top of the side main shaft, the bottom of the side main shaft is connected to the dissolution stirring paddle, the crystallization stirring paddle and the dissolution stirring paddle are both rotatably arranged in the kettle body, the crystallization stirring paddle is a U-shaped structure, the dissolution stirring paddle is arranged between the inner wall of the crystallization stirring paddle and the middle main shaft, the upper surface of the kettle cover is also provided with a feed inlet and a water inlet, and the bottom of the kettle body is provided with a discharge port.

[0006] Preferably, the utility model provides an integrated kettle for dissolving and crystallizing azelaic acid, wherein a thermometer port and a pressure gauge port are also provided on the upper surface of the kettle cover.

[0007] Preferably, the utility model provides an integrated kettle for dissolving and crystallizing azelaic acid, wherein a plurality of support seats are arranged outside the jacket.

[0008] Preferably, the utility model provides an integrated kettle for dissolving and crystallizing azelaic acid, wherein a refrigerant inlet is provided at the bottom of the jacket, and a refrigerant outlet is provided at one side of the upper portion of the jacket.

[0009] Preferably, the utility model provides an integrated kettle for dissolving and crystallizing azelaic acid, wherein through grooves are provided on the side walls of the motor base and in the middle inner cavity and the side inner cavity.

[0010] Preferably, the utility model provides an integrated kettle for dissolving and crystallizing azelaic acid, wherein the outer surface of the crystallization stirring paddle is movably connected to the inner wall of the kettle body.

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

[0012] (1) A motor seat is provided on the upper surface of the reactor cover, and a middle motor and two side motors are provided on the upper surface of the motor seat. The middle motor and the side motor respectively drive the crystallization stirring paddle and the dissolution stirring paddle to rotate, so that one reactor can realize the dissolution and crystallization processes at the same time, without the need to use separate dissolution reactors and crystallization reactors, which saves costs on the one hand and saves transportation time on the other hand, thereby improving efficiency.

[0013] (2) The crystallization stirring paddle and the dissolution stirring paddle do not affect each other's rotation in the kettle body. Before crystallization, the dissolution stirring paddle can also assist in stirring, so that the mixed solution can be cooled quickly, further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 This is a rear view structural diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the kettle cover from a top view;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the motor base.

[0018] In the figure: kettle body 1, jacket 2, kettle cover 3, motor base 4, middle motor 5, side motor 6, crystallization stirring paddle 7, dissolution stirring paddle 8, partition 9, middle inner cavity 10, side inner cavity 11, middle main shaft 12, side main shaft 13, feed inlet 14, water inlet 15, discharge port 16, thermometer port 17, pressure gauge port 18, support base 19, refrigerant inlet 20, refrigerant outlet 21, through groove 22. DETAILED DESCRIPTION

[0019] 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;

[0020] 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.

[0021] See also Figure 1-4The utility model provides a technical solution: an integrated kettle for dissolving and crystallizing azelaic acid, comprising a kettle body 1, a jacket 2, a kettle cover 3, a motor seat 4, an intermediate motor 5, a side motor 6, a crystallization stirring paddle 7, and a dissolving stirring paddle 8. The outside of the kettle body 1 is wrapped with a jacket 2, and a plurality of support seats 19 are arranged on the outside of the jacket 2 for overall support and fixation. A refrigerant inlet 20 is arranged at the bottom of the jacket 2, and a refrigerant outlet 21 is arranged on one side of the upper part of the jacket 2 to respectively realize the entry and discharge of the refrigerant into and out of the jacket. A kettle cover 3 is arranged at the top of the kettle body 1, and a motor seat 4 is arranged on the upper surface of the kettle cover 3. The interior of the motor seat 4 is divided into an intermediate inner cavity 10 and two side inner cavities 11 by a partition plate 9. A through groove 22 is opened on the side wall of the motor seat 4 and located at the intermediate inner cavity 10 and the side inner cavity 11. The through groove 22 is used to facilitate the connection between the main shaft and the motor through a coupling to provide an operating space. The upper surface of the motor seat 4 is provided with an intermediate motor 5 at the intermediate inner cavity 10. A side motor 6 is arranged on the upper surface of the machine base 4 at the side inner cavity 11, the output shaft of the intermediate motor 5 is connected to the top of the intermediate main shaft 12 through a coupling, the bottom of the intermediate main shaft 12 is connected to the crystallization stirring paddle 7 through a coupling, the output shaft of the side motor 6 is connected to the top of the side main shaft 13, the bottom of the side main shaft 13 is connected to the dissolution stirring paddle 8, the crystallization stirring paddle 7 and the dissolution stirring paddle 8 are both rotatably arranged in the kettle body 1, the crystallization stirring paddle 7 is a U-shaped structure, the outer surface of the crystallization stirring paddle 7 is movably connected to the inner wall of the kettle body 1, during the crystallization process, the crystal can be scraped off the inner wall of the kettle body 1, the dissolution stirring paddle is arranged between the inner wall of the crystallization stirring paddle 7 and the intermediate main shaft 12, the upper surface of the kettle cover 3 is also provided with a feed port 14 and a water inlet 15, the upper surface of the kettle cover 3 is also provided with a thermometer port 17 and a pressure gauge port 18 for the installation of a thermometer and a pressure gauge, so as to realize temperature and pressure monitoring, and a discharge port 16 is arranged at the bottom of the kettle body 1.

[0022] Installation method and use principle: First, install the middle motor 5 and the side motor 6 at the corresponding positions on the upper surface of the motor seat 4, then pass the top of the middle main shaft 12 connected with the crystal stirring paddle 7 through the kettle cover 3 and connect it to the output shaft of the middle motor 5 through the coupling, and pass the top of the side main shaft 13 connected with the dissolving stirring paddle 8 through the kettle cover 3 and connect it to the output shaft of the side motor 6 through the coupling. Finally, install the kettle cover 3 on the upper surface of the kettle body 1, at this time, the crystal stirring paddle 7 and the dissolving stirring paddle 8 are both located in the kettle body 1. When in use, the azelaic acid solution after heat preservation reaction, acid adjustment, filtration and decompression recovery is added into the kettle body 1 from the feed port 14, and then drinking water is added into the kettle body 1 from the water inlet 15, and the side motor 6 is started first, and the dissolving stirring paddle 8 is driven to rotate at high speed by the side motor 6 and the side main shaft 13, so that the azelaic acid is fully dissolved by the drinking water, and then the intermediate motor 5 is started, and the crystallization stirring paddle 7 is driven to rotate by the intermediate motor 5 and the intermediate main shaft 12, and at the same time, the refrigerant is sent into the jacket 2 from the refrigerant inlet 20 to cool the inside of the kettle body 1. When crystallization occurs, the side motor 6 is turned off to stop the dissolving stirring paddle 8 from rotating, until it is completely crystallized and then discharged from the discharge port 16. The utility model has a reasonable structure. A motor seat 4 is arranged on the upper surface of the kettle cover 3. An intermediate motor 5 and two side motors 6 are arranged on the upper surface of the motor seat 4. The intermediate motor 5 and the side motors 6 respectively drive the crystallization stirring paddle 7 and the dissolution stirring paddle 8 to rotate, so that one reactor can realize the dissolution and crystallization processes at the same time, without the need to adopt a separate dissolution reactor and a crystallization reactor, which saves costs on the one hand and saves transportation time and improves efficiency on the other hand. At the same time, the crystallization stirring paddle 7 and the dissolution stirring paddle 8 do not affect each other's rotation in the kettle body 1, and the dissolution stirring paddle 8 can also assist in stirring before crystallization, so that the mixed solution can be cooled quickly, further improving efficiency.

[0023] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0024] 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. An integrated kettle for dissolving and crystallizing azelaic acid, characterized in that: The invention comprises a kettle body (1), a jacket (2), a kettle cover (3), a motor seat (4), an intermediate motor (5), a side motor (6), a crystallization stirring paddle (7), and a dissolution stirring paddle (8); the outer portion of the kettle body (1) is wrapped with a jacket (2); the top of the kettle body (1) is provided with a kettle cover (3); the upper surface of the kettle cover (3) is provided with a motor seat (4); the interior of the motor seat (4) is divided into an intermediate inner cavity (10) and two side inner cavities (11) by a partition (9); the upper surface of the motor seat (4) is provided with an intermediate motor (5) located at the intermediate inner cavity (10); the upper surface of the motor seat (4) is provided with a side motor (6) located at the side inner cavity (11); the output of the intermediate motor (5) is The output shaft is connected to the top of the intermediate main shaft (12) through a coupling, the bottom of the intermediate main shaft (12) is connected to the crystallization stirring paddle (7) through a coupling, the output shaft of the side motor (6) is connected to the top of the side main shaft (13), the bottom of the side main shaft (13) is connected to the dissolution stirring paddle (8), the crystallization stirring paddle (7) and the dissolution stirring paddle (8) are both rotatably arranged in the kettle body (1), the crystallization stirring paddle (7) is a U-shaped structure, the dissolution stirring paddle is arranged between the inner wall of the crystallization stirring paddle (7) and the intermediate main shaft (12), the upper surface of the kettle cover (3) is also provided with a feed port (14) and a water inlet (15), and the bottom of the kettle body (1) is provided with a discharge port (16).

2. The azelaic acid dissolution and crystallization integrated kettle according to claim 1, characterized in that: The upper surface of the kettle cover (3) is also provided with a thermometer port (17) and a pressure gauge port (18).

3. The azelaic acid dissolution and crystallization integrated kettle according to claim 1, characterized in that: A plurality of support seats (19) are arranged outside the jacket (2).

4. The azelaic acid dissolution and crystallization integrated kettle according to claim 1, characterized in that: The bottom of the jacket (2) is provided with a refrigerant inlet (20), and one side of the upper portion of the jacket (2) is provided with a refrigerant outlet (21).

5. The azelaic acid dissolution and crystallization integrated kettle according to claim 1, characterized in that: Through grooves (22) are provided on the side walls of the motor seat (4) and located in the middle inner cavity (10) and the side inner cavity (11).

6. The azelaic acid dissolution and crystallization integrated kettle according to claim 1, characterized in that: The outer surface of the crystallization stirring paddle (7) is movably connected to the inner wall of the kettle body (1).

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