Hydrogenation reaction tank stirrer

Abstract

The utility model discloses a hydrogenation reaction tank stirrer which comprises a top cover used for being fixed at an opening part of a reaction tank body; the stirring rod is coaxially and rotationally arranged on the bottom side of the top cover through a mounting bracket, and stirring blades are fixed at the lower end of the stirring rod; compared with the prior art, the hydrogenation reaction tank stirrer has the beneficial effects that the stirring structure of the existing hydrogenation reaction tank stirrer is too complicated, the resistance borne by a plurality of groups of stirring blades during stirring is also very large, and the complicated stirring structure also has the problem of difficulty in cleaning and inconvenience in maintenance; according to the hydrogenation reaction tank, the spray generation mechanism comprising the infusion pump, the atomization mechanism and the infusion pipe is arranged, reaction liquid is extracted from the bottom of the reaction tank and atomized on the upper portion of the tank body, the problem that gas and liquid in the hydrogenation reaction tank are not fully mixed is effectively solved, and meanwhile the simplicity and usability of a stirrer are kept.

Description

Technical Field

[0001] This utility model relates to the field of agitator technology, specifically to an agitator for a hydrogenation reactor. Background Technology

[0002] In hydrogenation reactors, due to the small mass of the gas, it tends to concentrate in the upper part of the tank, making it difficult for the gas to be fully and effectively mixed with the solid-liquid mixture during stirring.

[0003] A search revealed that the hydrogenation reactor stirrer disclosed in Chinese Utility Model Patent Application No. 201120190228.3 includes a first stirring plate, a second stirring plate, a third stirring plate, a fourth stirring plate, and a fifth stirring plate arranged sequentially from bottom to top. The first stirring plate consists of at least two straight fins, the second stirring plate consists of at least three spiral fins, the third stirring plate consists of at least three inclined fins, the fourth stirring plate consists of at least three spiral fins, and the fifth stirring plate consists of at least three inclined fins. The fifth stirring plate is located inside a perforated cover.

[0004] The existing technology described above uses multiple sets of stirring blades to fully disperse the reaction liquid into a water mist, so as to fully mix it with the gas. However, this stirring structure is too complex, and the resistance encountered by multiple sets of stirring blades during stirring is also very large. In addition, the complex stirring structure is difficult to clean and inconvenient to maintain.

[0005] In view of this, the present invention proposes a stirrer for a hydrogenation reactor to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a hydrogenation reactor stirrer to solve the problems in the background art.

[0007] This utility model provides the following technical solution: a stirrer for a hydrogenation reactor, comprising:

[0008] Top cover, which is used to fix the top cover to the opening of the reaction vessel body;

[0009] A stirring rod is rotatably mounted on the bottom side of the top cover via a mounting bracket, and a stirring blade is fixed at the lower end of the stirring rod.

[0010] A drive mechanism, connected between the top cover and the stirring rod, is used to drive the stirring rod to rotate.

[0011] The top cover is connected to a spray generating mechanism, which includes a liquid pump fixedly connected to the top cover. The outlet of the liquid pump is connected to an atomizing mechanism, and the inlet of the liquid pump is connected to a liquid extraction pipe. The lower end of the liquid extraction pipe is used to extract reaction liquid from the lower end of the inside of the reaction tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the stirring structure of the existing hydrogenation reactor agitator is too complicated, and the resistance encountered by multiple stirring blades during stirring is also very large. In addition, the complicated stirring structure is difficult to clean and inconvenient to maintain. This utility model, by setting up a spray generating mechanism including a liquid pump, an atomizing mechanism and a liquid pumping pipe, draws the reaction liquid from the bottom of the reactor and atomizes it at the top of the reactor, effectively solving the problem of insufficient gas-liquid mixing in the hydrogenation reactor, while maintaining the simplicity and ease of use of the agitator. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model excluding the top cover.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model installed in a reaction vessel.

[0016] Figure 4 This is a schematic diagram of the atomizing mechanism of this utility model. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 This utility model discloses a stirrer for a hydrogenation reactor, comprising:

[0019] Top cover 1 is used to fix the top cover to the opening of the reaction vessel body. The top cover 1 can be fixed to the opening of the reaction vessel body by bolts or by a structure such as buckles, which will not be described in detail here.

[0020] The stirring rod 2 is coaxially rotatably mounted on the bottom side of the top cover 1 via a mounting bracket 3, and the lower end of the stirring rod 2 is fixed with a stirring blade 4;

[0021] The drive mechanism 5 is connected between the top cover 1 and the stirring rod 2 to drive the stirring rod 2 to rotate.

[0022] In use, the stirrer is fixed to the opening of the reaction vessel body by the top cover 1, and then the stirring rod 2 is driven to rotate by the drive mechanism 5. When the stirring rod 2 rotates, it drives the stirring blade 4 to stir and mix the reaction liquid and gas. The above structure constitutes the most basic stirring structure.

[0023] The main innovation of this utility model is as follows:

[0024] The top cover 1 is connected to a spray generating mechanism 6, which is used to draw the reaction liquid from the bottom of the reaction tank and then atomize the reaction liquid inside the upper part of the tank so that it can fully contact the gas inside the upper part of the tank.

[0025] The following is a specific embodiment of the spray generating mechanism 6:

[0026] The spray generating mechanism 6 includes a liquid pump 61 fixedly connected to the top cover 1. The outlet of the liquid pump 61 is connected to an atomizing mechanism 62, and the inlet of the liquid pump 61 is connected to a liquid extraction pipe 63. The lower end of the liquid extraction pipe 63 is used to extract the reaction liquid from the lower end of the inside of the reaction tank.

[0027] With the above structure, during the stirring of the reaction liquid by the stirring blade 4, the external power supply of the liquid pump 61 is turned on, the reaction liquid at the bottom of the reaction tank is drawn through the liquid pumping pipe 63, and then the reaction liquid is atomized by the atomizing mechanism 62 so that the reaction liquid is in full contact with the gas at the upper part of the reaction tank.

[0028] In some embodiments, the mounting bracket 3 includes a vertical fixing plate 31 whose upper end is fixed to the top cover 1. Two horizontal fixing plates 32 are fixed to the side of the vertical fixing plate 31. Two bearings are installed on the two horizontal fixing plates 32. The stirring rod 2 is rotatably connected to the two horizontal fixing plates 32 through the two bearings. There are two horizontal fixing plates 32, which are used to limit the upper end and the lower end of the stirring rod 2 respectively, so that the stirring rod 2 can rotate stably.

[0029] In some embodiments, the stirring rod 2 is a tube structure with openings at both the top and bottom. The liquid extraction tube 63 is disposed inside the stirring rod 2. The driving mechanism 5 includes a driven gear 51 fixed to the upper end of the stirring rod 2. The driven gear 51 is meshed with a driving gear 52. The top cover 1 is fixed with a motor 53. The output shaft of the motor 53 is fixedly connected to the driving gear 52. In use, the external power supply of the motor 53 is turned on, and the output shaft of the motor 53 rotates to drive the driving gear 52 to rotate. When the driving gear 52 rotates, it drives the driven gear 51 to rotate. When the driven gear 51 rotates, it drives the stirring rod 2 to rotate. When the stirring rod 2 rotates, it stirs the reaction liquid through the stirring blade 4. During the stirring process, the liquid extraction tube 63 is kept fixed inside the stirring rod 2, and the liquid extraction tube 63 extracts the reaction liquid from the lower end of the reaction tank.

[0030] In some embodiments, such as Figure 4 As shown, the atomizing mechanism 62 includes several atomizing nozzles 621. The several atomizing nozzles 621 are connected to the outlet of the liquid pump 61 through the connecting pipe 622. The number of atomizing nozzles 621 is 4-6, which can be arranged in a circumferential array around the liquid pump 63, so that the reaction liquid can be more evenly distributed inside the upper part of the reaction vessel after atomization.

[0031] In some embodiments, such as Figure 3 As shown, a transverse extraction tube 631 is fixedly connected to the lower side of the extraction tube 63. There are 2-4 transverse extraction tubes 631, distributed circumferentially around the side of the extraction tube 63. Each transverse extraction tube 631 has an extraction port along its length, and a solenoid valve 632 is installed at each extraction port. The solenoid valve 632 controls the opening and closing of the extraction port; this is existing technology and will not be elaborated upon here. With this structure, when using the extraction tube 63 to extract the reaction liquid, the solenoid valve 632 can control the opening and closing of different extraction ports, allowing the extraction tube 631 to extract the reaction liquid from multiple different positions at the bottom of the reaction vessel.

[0032] In summary, this invention provides a stirrer for a hydrogenation reactor. During use, the reaction liquid is drawn from the lower part of the reactor body through the extraction pipe 63 and then pumped to the atomizing mechanism 62 by the extraction pump 61 for atomization. This allows the reaction liquid to fully contact and mix with the gas at the upper part of the reactor body, improving the efficiency of the hydrogenation reaction. Furthermore, the stirrer has a simple structure, is easy to clean and maintain, and reduces operating costs.

[0033] 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 hydrogenation reactor vessel agitator characterized by: The utility model relates to a reaction kettle with spraying function, which comprises the following parts: a top cover for being fixed on the mouth of a reaction kettle body; a stirring rod coaxially arranged on the bottom side of the top cover through a mounting bracket, and a stirring blade fixed on the lower end of the stirring rod; a driving mechanism connected between the top cover and the stirring rod for driving the stirring rod to rotate; a spray generating mechanism connected with the top cover, which comprises a liquid pumping pump fixedly connected with the top cover, an atomizing mechanism connected with the liquid outlet of the liquid pumping pump, and a liquid pumping pipe connected with the liquid inlet of the liquid pumping pump, the lower end of the liquid pumping pipe being used for pumping reaction liquid from the inner bottom end of the reaction kettle body.

2. A hydrogenation reactor vessel agitator according to claim 1 wherein: The mounting bracket comprises a vertical fixing plate fixed on the upper end of the top cover, two lateral fixing plates fixed on the side of the vertical fixing plate, and two bearings mounted on the two lateral fixing plates, the stirring rod being rotatably connected with the two lateral fixing plates through the two bearings.

3. A hydrogenation reactor vessel agitator according to claim 2 wherein: The stirring rod is a tubular structure with open upper and lower ends, and the liquid pumping pipe is arranged in the stirring rod.

4. A hydrogenation reactor vessel agitator according to claim 3 wherein: The driving mechanism comprises a driven gear fixed on the upper end of the stirring rod, a driving gear meshingly connected with the driven gear, a motor fixed on the top cover, and an output shaft of the motor fixedly connected with the driving gear.

5. A hydrogenation reactor vessel agitator according to claim 3 wherein: The atomizing mechanism comprises a plurality of atomizing nozzles connected with the liquid outlet of the liquid pumping pump through connecting pipes.

6. A hydrogenation reactor vessel agitator according to claim 1 wherein: The lower end of the liquid pumping pipe is fixedly connected with a lateral pumping pipe provided with a pumping port along the length direction.

7. A hydrogenation reactor vessel agitator according to claim 6 wherein: The pumping port is provided with an electromagnetic valve.

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