Novel curing crystallization kettle for N-ethyl carbazole

Abstract

The utility model discloses a novel N-ethyl carbazole solidification crystallization kettle which comprises a kettle body supported by a plurality of supporting tables, two sides of the kettle body are provided with sealing covers, the two sealing covers are respectively provided with a feed port and a discharge port, one side of the kettle body is connected with a driving motor, the output end of the driving motor penetrates through the sealing covers, and the inner circumferential wall of the kettle body is provided with a cooling jacket. A cold water outlet and a cold water inlet are formed in the upper end and the lower end of the cooling jacket respectively, the two sealing covers are rotationally connected with a stirring shaft barrel through movable sealing pieces, the stirring shaft barrel is connected with the output end of the driving motor and provided with a backflow cavity, and propeller blades which are communicated with the backflow cavity and provided with cavities are arranged on the periphery of the stirring shaft barrel. A fixed end which is fixedly connected with the movable sealing piece and is positioned on the outer side of the sealing cover is arranged at one end, far away from the driving motor, of the stirring shaft barrel, is connected with external cold water and is communicated to the backflow cavity, so that the stirring shaft barrel and the propeller blades are filled with circulating cold water. According to the utility model, the heat exchange area in the crystallization kettle can be increased, and the cooling crystallization speed and efficiency in the kettle body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization equipment, in particular to a novel solidification crystallization kettle of N-ethylcarbazole. Background Art

[0002] With the continuous expansion of the scope of hydrogen energy utilization, the market has a huge demand for new hydrogen storage materials, and new requirements have been put forward for the improvement of technical indicators and cost control. Organic liquid hydrogen storage materials have the advantages of high storage efficiency, convenient transportation, and reusability. Organic liquid hydrogen storage has a very broad development prospect when combined with a mature refined oil supply and marketing system. Therefore, carbazole-based organic liquid hydrogen storage materials will usher in a rapid development. In the production process of carbazole-based organic liquid hydrogen storage material N-ethylcarbazole, an alkylation reaction is first required. After the alkylation reactor is completed, the layers are separated. After the alkylation reactor is left to stand for 15-30 minutes, the lower inorganic phase is separated, and the upper organic phase is directly placed in a crystallization pot for solidification and crystallization. After discharging, centrifugal washing, drying, and refining, high-purity N-ethylcarbazole is obtained.

[0003] The existing N-ethylcarbazole solidification crystallization kettle mainly adopts an internal circulation type horizontal crystallization kettle. Since the cooling circulating water of this crystallization kettle is coated on the outside of the crystallization kettle, the temperature near the inner peripheral wall of the crystallization kettle is lower than the temperature in the center direction of the crystallization kettle. Even if the material can be continuously stirred by a stirring device to improve the heat exchange efficiency between the material and the peripheral wall of the crystallization kettle, the heat exchange area in the crystallization kettle is still small, and the overall cooling crystallization speed is still slow, resulting in low crystallization efficiency of N-ethylcarbazole. Utility Model Content

[0004] In order to solve the technical problem that the temperature of the inner wall of the crystallization kettle in the prior art is lower than the temperature in the center direction of the crystallization kettle, the heat exchange area in the crystallization kettle is small, the overall cooling crystallization speed is still slow, and the crystallization efficiency is low, the utility model provides the following technical solution.

[0005] The utility model discloses a novel N-ethylcarbazole solidification crystallization kettle, comprising a kettle body supported by a plurality of support platforms, sealing covers are arranged on both sides of the kettle body, two sealing covers are respectively provided with a feed port and a discharge port, one side of the kettle body is connected with a driving motor whose output end passes through the sealing covers, an inner peripheral wall of the kettle body is provided with a cooling jacket, and upper and lower ends of the cooling jacket are respectively provided with a cold water outlet and a cold water inlet, the two sealing covers are rotatably connected with a stirring shaft barrel provided with a reflux chamber connected to the output end of the driving motor through a dynamic sealing component, the outer periphery of the stirring shaft barrel is provided with a propeller blade provided with a cavity and communicated with the reflux chamber, one end of the stirring shaft barrel away from the driving motor is provided with a fixed end fixedly connected with the dynamic seal and located outside the sealing cover, the fixed end is connected with external cold water and communicated with the reflux chamber, so as to make the stirring shaft barrel and the propeller blade filled with circulating cold water.

[0006] As a further technical solution, a water inlet pipe extending into the reflux cavity and approaching the driving motor is fixedly connected to the fixed end, and the water inlet pipe communicates with the cavity.

[0007] As a further technical solution, a plurality of water outlet holes are provided at one end of the water inlet pipe close to the driving motor along the axis direction of the water inlet pipe.

[0008] As a further technical solution, a water return pipe with a length less than that of the water inlet pipe and communicating with the reflux cavity is provided at the fixed end.

[0009] As a further technical solution, the axis of the water inlet pipe and the axis of the stirring shaft cylinder are located on the same straight line.

[0010] As a further technical solution, the cavity communicates with the reflux cavity at both ends of the propeller blade.

[0011] The beneficial effects of the present utility model are as follows: a cooling jacket is provided on the inner peripheral wall of the kettle body of the curing and crystallization kettle of the present utility model, which can cool and crystallize the solution from the outer periphery of the solution. The stirring shaft cylinder is hollow, and the propeller blade connected to the outer periphery of the stirring shaft cylinder is also hollow. The stirring shaft cylinder is rotatably connected to the sealing cover through a dynamic seal. The driving motor can drive the stirring shaft cylinder and the propeller blade to stir and cool the solution. A fixed end is provided at one end of the stirring shaft cylinder outside the sealing cover, and the fixed end is connected to an external cold water system, which can fill the cavities of the stirring shaft cylinder and the propeller blade with circulating cooling water, and can cool from the center of the kettle body to the outer periphery, increasing the heat exchange area in the crystallization kettle and improving the cooling and crystallization speed and efficiency in the kettle body. Description of the Drawings

[0012] Figure 1 is a schematic external structure diagram of the curing and crystallization kettle of the novel N-ethylcarbazole of the present utility model;

[0013] Figure 2 is a sectional view of the kettle body of the curing and crystallization kettle of the novel N-ethylcarbazole of the present utility model;

[0014] Figure 3 is a sectional view of the propeller blade of the curing and crystallization kettle of the novel N-ethylcarbazole of the present utility model;

[0015] Figure 4 is a sectional view of the fixed end of the curing and crystallization kettle of the novel N-ethylcarbazole of the present utility model;

[0016] In the figure: 1 - support platform; 2 - kettle body; 201 - sealing cover; 202 - feed inlet; 203 - discharge outlet; 3 - cooling jacket; 301 - cold water inlet; 302 - cold water outlet; 4 - driving motor; 5 - stirring shaft tube; 501 - fixed end; 502 - water inlet pipe; 503 - return cavity; 504 - return water pipe; 6 - propeller blade; 601 - cavity; 7 - dynamic seal. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0018] In the description of the present utility model, it should be understood that the terms "upper", "lower", and "both sides" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0019] As Figure 1 and Figure 2 shown, a novel solidification crystallization kettle for N-ethylcarbazole of the present utility model includes a kettle body 2 supported by a plurality of support platforms 1, and the support platforms 1 are fixed to the ground by bolts. The kettle body 1 is made of stainless steel material. Sealing covers 201 are provided on both sides of the kettle body 2. The two sealing covers 201 are respectively provided with a feed inlet 202 and a discharge outlet 203. The N-ethylcarbazole solution enters the kettle body 2 from the feed inlet 202 and is discharged from the discharge outlet 203 after cooling and crystallization. A driving motor 4 is connected to one side of the kettle body 2, and the output end of the driving motor 4 passes through the sealing cover 201 through a coupling and extends into the kettle body 2. A cooling jacket 3 is provided on the inner peripheral wall of the kettle body 2. A cold water outlet 302 and a cold water inlet 301 are respectively provided at the upper and lower ends of the cooling jacket 3. The circulating cooling water enters the inner cavity of the cooling jacket 3 from the cold water inlet 301 and is discharged from the cold water outlet 302.

[0020] As Figure 3 and Figure 4As shown, in a preferred embodiment, two sealing covers 201 are rotatably connected to a stirring shaft cylinder 5 connected to the output end of a driving motor 4 through a dynamic seal 7. The stirring shaft cylinder 5 is of a hollow structure. A reflux chamber 503 is provided in the inner cavity of the stirring shaft cylinder 5. A propeller blade 6 communicating with the reflux chamber 503 is provided on the outer periphery of the stirring shaft cylinder 5. The propeller blade 6 is provided with a cavity 601, and the cavity 601 communicates with the reflux chamber 503. One end of the stirring shaft cylinder 5 connected to the output end of the driving motor 4 is of a sealed structure. An opening is provided at the end of the stirring shaft cylinder 5 far from the driving motor 4, and the opening is rotatably connected to the sealing cover 201 through a dynamic seal 7. A fixed end 501 fixedly connected to the dynamic seal 7 extends outward from the opening of the stirring shaft cylinder 5 to the outside of the sealing cover 201. External circulating cooling water flows into the reflux chamber 503 and the cavity 601 from the fixed end 501, and further cools the solution in the kettle body 2 from the direction of the central axis of the kettle body 2.

[0021] In a preferred embodiment, the fixed end 501 is connected to external cold water and communicates with the reflux chamber 503. The cooling water flows into the reflux chamber 503 from the fixed end 501 and fills the entire stirring shaft cylinder 5 and the propeller blade 6, so that the stirring shaft cylinder 5 and the propeller blade 6 are filled with cold water, which can further increase the heat exchange area of the solution in the kettle body 2 and improve the cooling crystallization efficiency.

[0022] In a preferred embodiment, the fixed end 501 is provided with a return pipe 504 whose length communicating with the reflux chamber 503 is less than that of the water inlet pipe 502. The fixed end 501 is fixedly connected with a water inlet pipe 502 extending into the interior of the reflux chamber 503. The end of the water inlet pipe 502 facing the driving motor 4 is preferably close to the end of the reflux chamber 503, so that the cooling water flows back outward from one end of the stirring shaft cylinder 5. It should be understood that the water inlet pipe 502 communicates with the cavity 601, and the cooling water flows back from the end of the cavity 601 close to the driving motor 4 towards the fixed end 501, improving the circulation efficiency of the cooling water. Of course, the cavity 601 can also communicate with the reflux chamber 503 at both ends of the propeller blade 6. There is no special limitation on this, as long as the cooling water can flow back outward from one end of the propeller blade 6.

[0023] In a preferred embodiment, a plurality of water outlet holes are provided along the axis direction of the water inlet pipe 502 at the end of the water inlet pipe 502 close to the driving motor 4. The axis of the water inlet pipe 502 and the axis of the stirring shaft cylinder 5 are located on the same straight line. Thus, the water flow velocity of the circulating cooling water can be increased.

[0024] When the utility model is in use, first, circulating cooling water enters the inner cavity of the cooling jacket 3 from the cold water inlet 301, and the cooling water is introduced into the stirring shaft cylinder 5 and the propeller blade 6 through the water inlet pipe 502; the N-ethylcarbazole solution enters the kettle body 2 from the feed inlet 202, the driving motor 4 is started, the driving motor 4 drives the stirring shaft 5 and the propeller blade 6 to rotate, the cold water outlet 302 and the water return pipe 504 are opened, so that the circulating cooling water continuously circulates and cools down, the solution is cooled and crystallized while stirring, and the cooled and crystallized N-ethylcarbazole is discharged from the discharge outlet 203.

[0025] The specific preferred embodiments and examples of the utility model are described in detail above with reference to the drawings. However, the utility model is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. A solidification crystallization kettle for a novel N-ethylcarbazole, comprising a kettle body (2) supported by a number of support platforms (1), both sides of the kettle body (2) are provided with sealing covers (201), the two sealing covers (201) are respectively provided with a feed inlet (202) and a discharge outlet (203), one side of the kettle body (2) is connected with a driving motor (4) whose output end passes through the sealing cover (201), and it is characterized in that: The inner peripheral wall of the kettle body (2) is provided with a cooling jacket (3). The upper and lower ends of the cooling jacket (3) are respectively provided with a cold water outlet (302) and a cold water inlet (301). The two sealing covers (201) are rotationally connected through a dynamic seal (7) to a stirring shaft cylinder (5) provided with a reflux chamber (503) and connected to the output end of the drive motor (4). The outer periphery of the stirring shaft cylinder (5) is provided with a propeller blade (6) provided with a cavity (601) communicating with the reflux chamber (503). One end of the stirring shaft cylinder (5) far from the drive motor (4) is provided with a fixed end (501) fixedly connected to the dynamic seal (7) and located outside the sealing cover (201). The fixed end (501) is connected to external cold water and communicated to the reflux chamber (503) so as to fill the stirring shaft cylinder (5) and the propeller blade (6) with circulating cold water.

2. The solidification crystallization kettle for the novel N-ethylcarbazole according to claim 1, wherein: The fixed end (501) is fixedly connected with a water inlet pipe (502) extending into the reflux chamber (503) in the direction close to the drive motor (4). The water inlet pipe (502) is communicated to the cavity (601).

3. The solidification crystallization kettle for the novel N-ethylcarbazole according to claim 2, characterized in that: One end of the water inlet pipe (502) close to the drive motor (4) is provided with a plurality of water outlet holes along the axis direction of the water inlet pipe (502).

4. The solidification crystallization kettle for the novel N-ethylcarbazole according to claim 2, characterized in that: The fixed end (501) is provided with a water return pipe (504) communicating with the reflux chamber (503) and having a length shorter than that of the water inlet pipe (502).

5. The solidification crystallization kettle for the novel N-ethylcarbazole according to claim 2, characterized in that: The axis of the water inlet pipe (502) and the axis of the stirring shaft cylinder (5) are located on the same straight line.

6. The solidification crystallization kettle for the novel N-ethylcarbazole according to claim 1, characterized in that: The cavity (601) communicates with the reflux chamber (503) at both ends of the propeller blade (6).

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