Reaction kettle for preparing dibutyl phthalate

Abstract

The utility model provides a reaction kettle for preparing dibutyl phthalate, which structurally comprises a kettle body, a floating cover is movably sleeved at the middle part of the inner wall of the kettle body, and a spiral exhaust pipe is inserted at the right end of the floating cover; the device comprises a top cover, a driving motor is fixedly arranged in the middle of the top surface of the top cover, a rotating shaft is fixedly connected to the output end of the bottom of the driving motor, the top of the rotating shaft is movably connected with the middle of the top cover, and a plurality of stirring paddles are fixedly arranged at the bottom of the rotating shaft. A gas release space generated by a reaction solution in the kettle body is compressed by the floating cover, so that gas generated in the preparation work of the dibutyl phthalate is prevented from directly overflowing in a space between the kettle body and the top cover to limit the gas overflowing space, the overflowing gas can be conveniently discharged in time by the spiral exhaust pipe, the gas discharging efficiency is improved, and the service life of the dibutyl phthalate is prolonged. The problem of low gas collection efficiency of a fixedly mounted collection pipe of existing equipment is solved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of reaction kettles, and particularly relates to a reaction kettle for preparing dibutyl phthalate. Background Art

[0002] During the preparation process of dibutyl phthalate, the main components of the gas generated in the reaction kettle are water and dibutyl phthalate. Generally, in the production area, the impure substances in the gas can be removed by the operation method of vacuum distillation. Therefore, the gas generated by the reaction of dibutyl phthalate in the reaction kettle needs to be discharged in time and sent to the vacuum distillation section of the factory for treatment.

[0003] The existing patent (publication number: CN214390096U) discloses a device for catalytic reactive distillation to prepare dibutyl phthalate, including a device body. The device body includes a reaction kettle body and a rotating motor. The rotating motor is arranged on the top surface of the reaction kettle body. The reaction kettle body includes a kettle cover and a kettle body. The kettle cover and the kettle body are fixed by fixing bolts. The output end of the rotating motor penetrates through the middle of the kettle cover. There are two groups of heaters arranged on the top surface of the kettle cover. The bottom end of each group of heaters is connected with a heating pipe. The bottom of each group of heating pipes is arranged in the middle of the reaction kettle body. The top end of each group of heaters is electrically connected to an external power supply. The kettle cover is penetrated by a gas collection pipe. The bottom of the output end of the rotating motor is welded and fixed to a rotating shaft. Due to the two groups of heating devices and stirring devices provided, the user can obtain the product in a short time, and the gas collection pipe provided can collect the flue gas and water vapor generated by the catalysis, avoiding pollution.

[0004] In the process of implementing this solution by the inventor, the gas collection pipe is directly pre - installed in the kettle body of the reaction kettle for gas collection operation. Since the space inside the kettle body is large, there is a technical problem that the gas collection pipe pre - installed on the kettle cover has low collection efficiency. Summary of the Utility Model

[0005] 1. Technical problems to be solved by the utility model:

[0006] The utility model provides a reaction kettle for preparing dibutyl phthalate, which solves the problem of low gas collection efficiency of the fixed - installed collection pipe in the existing equipment.

[0007] 2. Technical solution:

[0008] To achieve the above - mentioned purpose, the technical solution provided by the utility model is as follows: A reaction kettle for preparing dibutyl phthalate includes the following structure:

[0009] A kettle body, in the middle of the inner wall of the kettle body, there is a floating cover movably sleeved, and a spiral exhaust pipe is inserted at the right end of the floating cover.

[0010] The top cover, a driving motor is fixedly installed in the middle of the top surface of the top cover, the bottom output end of the driving motor is fixedly connected with a rotating shaft, the top of the rotating shaft is movably connected with the middle of the top cover, and a plurality of stirring paddles are fixedly installed at the bottom of the rotating shaft.

[0011] Furthermore, a discharge pipe is fixedly installed at the bottom of the kettle body, and a transition pipe is fixedly installed at the left end of the bottom of the kettle body.

[0012] Furthermore, a docking pipe is fixedly installed in the middle of the floating cover, and the middle of the docking pipe is movably sleeved on the outer side of the rotating shaft.

[0013] Furthermore, a partition plate is fixedly installed near the upper part of the mixer in the middle of the rotating shaft, a limiting spring is clamped at the top of the partition plate, and the top of the limiting spring abuts against the bottom of the docking pipe.

[0014] Furthermore, the right end of the top cover is penetrated and connected with the top of the spiral exhaust pipe, the bottom of the top cover is fixedly connected with the top of the kettle body through bolts, the left end of the top cover is fixedly inserted with a main feed pipe, the bottom of the main feed pipe is movably sleeved on the left end of the floating cover, a liquid inlet pump is fixedly installed at the bottom of the main feed pipe, the outer side of the liquid inlet pump is fixedly connected with the inner wall of the transition pipe, and the output end of the liquid inlet pump extends to the bottom of the inner wall of the kettle body.

[0015] Furthermore, a variable production area is defined between the bottom of the floating cover and the bottom of the inner wall of the kettle body.

[0016] 3. Beneficial effects:

[0017] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0018] The present utility model provides a reaction kettle for the preparation of dibutyl phthalate. The setting of the variable production area, combined with the gas release space generated by the floating cover compressing the reaction solution in the kettle body, avoids the gas generated in the preparation work of dibutyl phthalate from directly overflowing into the space between the kettle body and the top cover, restricts the gas overflow space, facilitates the spiral exhaust pipe to timely discharge the overflowing gas, and improves the gas discharge efficiency;

[0019] The present utility model provides a reaction kettle for the preparation of dibutyl phthalate. The cooperation of the partition plate and the limiting spring provides auxiliary support and protection for the floating cover outside the rotating shaft. Among them, the cooperation of the main feed pipe and the rotating shaft completes the up and down floating treatment of the floating cover in the kettle body along with the change of the page height of the reaction solution. Combined with the movable socket connection between the floating cover and the inner wall of the kettle body, the solution impurities adhered to the inner wall surface of the kettle body can be scraped off;

[0020] The parts not involved in this device are the same as those in the prior art or can be implemented by using the prior art. Description of the drawings

[0021] Figure 1 is a perspective view of the structure of the present utility model;

[0022] Figure 2 is a semi-sectional perspective view of the kettle body structure of the present utility model;

[0023] Figure 3 is a semi-sectional perspective view of the top cover structure of the present utility model;

[0024] Figure 4 is a semi-sectional perspective view of the floating hood structure of the present utility model.

[0025] Reference numerals:

[0026] Kettle body - 1; Discharge pipe - 11; Transition pipe - 12;

[0027] Floating hood - 2;

[0028] Docking pipe - 3;

[0029] Spiral exhaust pipe - 4;

[0030] Top cover - 5;

[0031] Drive motor - 6; Rotating shaft - 61; Stirring paddle - 62;

[0032] Partition board - 7; Limit spring - 71;

[0033] Active feed pipe - 8; Liquid inlet pump - 81. Detailed implementation manners

[0034] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element; when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time; the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs; the terms used in the description of this utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0037] Referring to the attached Figures 1-4 , this utility model provides a reaction kettle for preparing dibutyl phthalate, including the following structure:

[0038] The kettle body 1, the middle part of the inner wall of the kettle body 1 is movably sleeved with a floating cover 2, and the right end of the floating cover 2 is inserted with a spiral exhaust pipe 4.

[0039] The top cover 5, the middle part of the top surface of the top cover 5 is fixedly provided with a driving motor 6, the bottom output end of the driving motor 6 is fixedly connected with a rotating shaft 61, the top of the rotating shaft 61 is movably connected with the middle part of the top cover 5, and the bottom of the rotating shaft 61 is fixedly provided with a plurality of stirring paddles 62.

[0040] In this embodiment, as Figure 1 , Figure 2 and Figure 3 shown, the bottom of the kettle body 1 is fixedly provided with a discharge pipe 11, and the left end of the bottom of the kettle body 1 is fixedly provided with a transition pipe 12.

[0041] The arrangement of the transition pipe 12 of the kettle body 1 provides an installation support for the liquid inlet pump 81, and completes the arrangement of the liquid inlet pump 81 close to the bottom of the active feed pipe 8.

[0042] In this embodiment, as Figure 2 , Figure 3 and Figure 4 shown, the middle part of the floating cover 2 is fixedly provided with a docking pipe 3, and the middle part of the docking pipe 3 is movably sleeved with the outside of the rotating shaft 61.

[0043] During the process of filling the reaction solution into the kettle body 1 through the active feed pipe 8 and the liquid inlet pump 81, when the liquid level in the kettle body 1 rises to the bottom of the floating cover 2, the floating cover 2 floats above the reaction solution. At this time, the gas generated by the reaction solution is mainly concentrated on the inner side of the bottom of the floating cover 2 and can be discharged through the spiral exhaust pipe 4 to the vacuum distillation section of the factory for treatment.

[0044] In this embodiment, as Figure 2 and Figure 4 shown, a partition plate 7 is fixedly provided near the upper part of the stirrer in the middle part of the rotating shaft 61, a limiting spring 71 is clamped at the top of the partition plate 7, and the top of the limiting spring 71 abuts against the bottom of the docking pipe 3.

[0045] The cooperation between the partition plate 7 and the limiting spring 71 provides auxiliary support and protection for the floating cover 2 outside the rotating shaft 61. Among them, the cooperation between the active feed pipe 8 and the rotating shaft 61 enables the floating cover 2 to float up and down inside the kettle body 1 along with the change in the height of the reaction solution surface. Combined with the movable socket connection between the floating cover 2 and the inner wall of the kettle body 1, the solution impurities adhering to the inner wall surface of the kettle body 1 can be scraped off.

[0046] In this embodiment, as Figure 2 and Figure 4 shown, the right end of the top cover 5 is penetrated and connected to the top of the spiral exhaust pipe 4. The bottom of the top cover 5 is fixedly connected to the top of the kettle body 1 by bolts. The left end of the top cover 5 is fixedly inserted with an active feed pipe 8. The bottom of the active feed pipe 8 is movably sleeved with the left end of the floating cover 2. A liquid inlet pump 81 is fixedly provided at the bottom of the active feed pipe 8. The outside of the liquid inlet pump 81 is fixedly connected to the inner wall of the transition pipe 12. The output end of the liquid inlet pump 81 extends to the bottom of the inner wall of the kettle body 1.

[0047] The liquid inlet pump 81 and the active feed pipe 8 cooperate to inject the reaction solution into the kettle body 1 for production.

[0048] In this embodiment, as Figure 3 shown, a variable production area is defined between the bottom of the floating cover 2 and the bottom of the inner wall of the kettle body 1.

[0049] The setting of the variable production area, combined with the gas release space generated by the floating cover 2 compressing the reaction solution in the kettle body 1, avoids the gas generated in the preparation of dibutyl phthalate from directly spilling into the space between the kettle body 1 and the top cover 5, restricts the gas spill space, facilitates the spiral exhaust pipe 4 to timely discharge the spilled gas, improves the gas discharge efficiency. Subsequently, according to the actual production requirements, a fan can be selected to be added at the air outlet end of the spiral exhaust pipe 4 to further improve the exhaust efficiency.

[0050] The above-described embodiments only represent certain implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A reaction kettle for preparing dibutyl phthalate, characterized in that: Includes the following structure: A kettle body (1), wherein a floating cover (2) is movably sleeved on the middle part of the inner wall of the kettle body (1), and a spiral exhaust pipe (4) is inserted at the right end of the floating cover (2); A top cover (5), wherein a driving motor (6) is fixedly arranged in the middle of the top surface of the top cover (5), a rotating shaft (61) is fixedly connected to the bottom output end of the driving motor (6), the top of the rotating shaft (61) is movably connected to the middle of the top cover (5), and a plurality of stirring paddles (62) are fixedly arranged at the bottom of the rotating shaft (61).

2. A reaction kettle for preparing dibutyl phthalate according to claim 1, characterized in that: A discharge pipe (11) is fixedly provided at the bottom of the kettle body (1), and a transition pipe (12) is fixedly provided at the left end of the bottom of the kettle body (1).

3. A reaction kettle for preparing dibutyl phthalate according to claim 1, characterized in that: A butt joint pipe (3) is fixedly provided in the middle of the floating cover (2), and the middle of the butt joint pipe (3) is movably sleeved with the outer side of the rotating shaft (61).

4. A reaction kettle for preparing dibutyl phthalate according to claim 1, characterized in that: A partition (7) is fixedly provided in the middle of the rotating shaft (61) near the top of the mixer, and a limit spring (71) is clamped on the top of the partition (7), and the top of the limit spring (71) contacts the bottom of the butt joint (3).

5. A reaction kettle for preparing dibutyl phthalate according to claim 1, characterized in that: The right end of the top cover (5) is connected to the top of the spiral exhaust pipe (4), the bottom of the top cover (5) is fixedly connected to the top of the kettle body (1) by bolts, the left end of the top cover (5) is fixedly plugged with an active feed pipe (8), the bottom of the active feed pipe (8) is movably sleeved with the left end of the floating cover (2), the bottom of the active feed pipe (8) is fixedly provided with a liquid feed pump (81), the outer side of the liquid feed pump (81) is fixedly connected to the inner wall of the transition pipe (12), and the output end of the liquid feed pump (81) extends to the bottom of the inner wall of the kettle body (1).

6. A reaction kettle for preparing dibutyl phthalate according to claim 1, characterized in that: A variable production area is defined between the bottom of the floating cover (2) and the bottom of the inner wall of the kettle body (1).

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