Efficient dissolving and stirring kettle for maleic anhydride

Abstract

The utility model relates to the technical field of dissolving stirring kettles, in particular to an efficient dissolving stirring kettle for maleic anhydride, which comprises a body, one side of the top of the body is communicated with a feeding pipe, the center of the bottom of the body is communicated with a discharging pipe, and a stirring mechanism is arranged on the body and comprises a driving motor, a rotating shaft and a stirring rod. A heating mechanism is further arranged on the rotating shaft and comprises an electric heating net and a heat conduction shell, the heat conduction shell is installed on the rotating shaft, a cavity is formed in the heat conduction shell, the electric heating net is arranged in the cavity, a plurality of stirring blocks are arranged at the upper end and the lower end of the heat conduction shell, and a plurality of stirring baffles are further connected to the outer surface of one end of the bottom of the rotating shaft. The maleic anhydride dissolving device is simple in structure and low in use cost, effectively improves the maleic anhydride dissolving rate, solves the problem of local overheating or incomplete dissolving caused by mismatching of dissolving and reaction rates due to non-uniform stirring in the prior art, and is simple in structure and low in use cost.

Description

Technical Field

[0001] This utility model relates to the field of dissolving and stirring tank technology, specifically a high-efficiency dissolving and stirring tank for maleic anhydride. Background Technology

[0002] Maleic anhydride, a key organic chemical raw material, is widely used in the production of various chemical products, including synthetic resins, plasticizers, coatings, and pharmaceuticals. In many chemical reactions, maleic anhydride frequently reacts with other compounds (such as alcohols, amines, or other chemical reagents). To improve the efficiency of these reactions, maleic anhydride is usually dissolved or used in a molten state. Especially in the production of unsaturated polyester resins, maleic anhydride is typically dissolved or melted in a stirred tank. Furthermore, maleic anhydride can react with water to produce maleic acid, a reaction usually carried out in an aqueous solution. Stirring is also essential in this process, ensuring thorough mixing of maleic anhydride and water, thereby accelerating the hydrolysis reaction.

[0003] The currently used maleic anhydride dissolution stirred tank has a slow dissolution rate, which reduces production efficiency. Furthermore, maleic anhydride is prone to uneven stirring in the stirred tank, leading to a mismatch between dissolution and reaction rates, resulting in localized overheating or incomplete dissolution. No solution has yet been proposed to address these technical problems. Utility Model Content

[0004] To address the problems in related technologies, this invention proposes a high-efficiency dissolving and stirring vessel for maleic anhydride, overcoming the aforementioned technical issues in existing technologies. The purpose of this invention is to effectively improve the dissolution rate of maleic anhydride and solve the problem of local overheating or incomplete dissolution caused by uneven stirring leading to a mismatch between dissolution and reaction rates. It has a simple structure and low operating cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency dissolving and stirring vessel for maleic anhydride, comprising a body, a feed pipe connected to one side of the top of the body, and a discharge pipe connected to the center of the bottom of the body. A stirring mechanism is provided on the body, comprising a drive motor, a rotating shaft, and stirring rods. The drive motor is installed at the center of the top of the body. The rotating shaft is located inside the body, with one end extending to the outside of the body and its end fixedly connected to the output end of the drive motor. Several stirring rods are provided, all installed on the outer wall of the rotating shaft. A heating mechanism is also provided on the rotating shaft, comprising an electric heating mesh and a heat-conducting shell. The heat-conducting shell is installed on the rotating shaft, and a cavity is provided inside the heat-conducting shell. The electric heating mesh is located within the cavity.

[0006] Preferably, the heat-conducting shell is arranged in a disc-shaped structure, and a plurality of stirring blocks are provided at both the upper and lower ends of the heat-conducting shell, and the plurality of stirring blocks are arranged in a ring structure.

[0007] Preferably, a plurality of stirring baffles are connected to the outer surface of one bottom end of the rotating shaft. The stirring baffles are provided in a ring with six baffles at equal intervals.

[0008] Preferably, the heat-conducting shell is made of copper.

[0009] Preferably, the stirring baffle and the rotating shaft are an integrated structure.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) This utility model is a high-efficiency dissolving and stirring vessel for maleic anhydride. By setting a stirring mechanism, stirring baffle and stirring block, it is convenient to stir the raw materials inside the body, expand the contact area with the raw materials, prevent uneven stirring, and improve the stirring effect.

[0012] (2) This utility model is a high-efficiency dissolving and stirring vessel for maleic anhydride. By setting a heating mechanism, the contact area with the raw materials is expanded, which facilitates the dissolution of the raw materials inside the vessel, solves the problem of slow heating rate leading to low reaction efficiency in traditional methods, and improves production efficiency. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention in frontal cross-section;

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

[0015] In the attached diagram, the following are the reference numerals: 1. Main body; 2. Feed pipe; 3. Discharge pipe; 4. Drive motor; 5. Rotating shaft; 6. Stirring rod; 7. Electric heating mesh; 8. Heat-conducting shell; 9. Stirring block; 10. Stirring baffle. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Example

[0018] Please see Figure 1-2This utility model proposes a technical solution for a high-efficiency dissolving and stirring vessel for maleic anhydride: A high-efficiency dissolving and stirring vessel for maleic anhydride includes a body 1. Specifically, a reinforcing block is provided on the outside of the body 1, and a thermometer is provided inside the body 1, both using existing technology. A feed pipe 2 is connected to one side of the top of the body 1, allowing maleic anhydride to enter the body 1 through the feed pipe 2. A discharge pipe 3 is connected to the center of the bottom of the body 1, allowing the dissolved and stirred maleic anhydride to be discharged through the discharge pipe 3, which is equipped with a valve. A stirring mechanism is provided on the body 1, comprising a drive motor 4, a rotating shaft 5, and a stirring rod 6. The drive motor 4 is installed at the center of the top of the body 1, and the rotating shaft 5 is... Inside the main body 1, one end of the rotating shaft 5 extends to the outside of the main body 1, and the end is fixedly connected to the output end of the drive motor 4. Several stirring rods 6 are provided, all of which are installed on the outer wall of the rotating shaft 5. Specifically, when the drive motor 4 is started, the rotating shaft 5 is driven to rotate clockwise or counterclockwise. When the rotating shaft 5 rotates, it drives the stirring rods 6 to rotate, thereby stirring the raw materials. A heating mechanism is also provided on the rotating shaft 5. The heating mechanism includes an electric heating mesh 7 and a heat-conducting shell 8. The heat-conducting shell 8 is installed on the rotating shaft 5. A cavity is provided inside the heat-conducting shell 8. The electric heating mesh 7 is placed in the cavity. Specifically, the electric heating mesh 7 is energized. The heat-conducting shell 8 is made of copper material and plays a role in heat conduction, effectively accelerating the dissolution rate of the raw materials.

[0019] Please see Figure 1 As shown, the heat-conducting shell 8 is further configured in a disc shape, and several stirring blocks 9 are provided at both the upper and lower ends of the heat-conducting shell 8, which are arranged in a ring shape.

[0020] In this embodiment, the stirring block 9 effectively increases the contact area with the raw materials, thereby improving the stirring effect and efficiency.

[0021] Please see Figure 1 As shown, furthermore, a number of stirring baffles 10 are connected to the outer surface of one end of the bottom of the rotating shaft 5. There are six stirring baffles 10, which are arranged in a ring at equal intervals.

[0022] In this embodiment, the stirring baffle 10 effectively stirs the raw materials at the bottom of the body 1, preventing the raw materials from accumulating inside the body 1 and causing uneven stirring.

[0023] Furthermore, the heat-conducting shell 8 is made of copper.

[0024] In this embodiment, the contact surface with the raw material is increased to improve the efficiency of heat conduction.

[0025] Please see Figure 1 As shown, the stirring baffle 10 and the rotating shaft 5 are an integrated structure.

[0026] The working principle of this utility model:

[0027] The maleic anhydride to be dissolved is placed into the body 1 through the feed pipe 2. The electric heating mesh 7 is energized, and the heat-conducting shell 8 heats up under the action of the electric heating mesh 7, thereby dissolving the maleic anhydride. The drive motor 4 is started to drive the rotating shaft 5 to rotate clockwise or counterclockwise. When the rotating shaft 5 rotates, it drives the stirring rod 6, the stirring baffle 10 and the stirring block 9 on the heat-conducting shell 8 to rotate, thereby stirring the raw materials and effectively accelerating the dissolution rate of the raw materials. This solves the problem of uneven stirring in traditional methods, which leads to a mismatch between the dissolution and reaction rates, causing local overheating or incomplete dissolution.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] 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 high-efficiency dissolving and stirring vessel for maleic anhydride, characterized in that, The system includes a main body (1), with a feed pipe (2) connected to one side of the top of the main body (1) and a discharge pipe (3) connected to the center of the bottom of the main body (1). The main body (1) is equipped with a stirring mechanism, which includes a drive motor (4), a rotating shaft (5), and stirring rods (6). The drive motor (4) is installed at the center of the top of the main body (1). The rotating shaft (5) is located inside the main body (1), with one end of the rotating shaft (5) extending to the outside of the main body (1) and the end fixedly connected to the output end of the drive motor (4). Several stirring rods (6) are provided and are all installed on the outer wall of the rotating shaft (5). The rotating shaft (5) is also equipped with a heating mechanism, which includes an electric heating mesh (7) and a heat-conducting shell (8). The heat-conducting shell (8) is installed on the rotating shaft (5) and has a cavity inside. The electric heating mesh (7) is located inside the cavity.

2. The high-efficiency dissolving and stirring vessel for maleic anhydride according to claim 1, characterized in that: The heat-conducting shell (8) is arranged in a disc-shaped structure. Several stirring blocks (9) are arranged at both the upper and lower ends of the heat-conducting shell (8). The several stirring blocks (9) are arranged in a ring structure.

3. The high-efficiency dissolving and stirring vessel for maleic anhydride according to claim 1, characterized in that: The outer surface of one end of the rotating shaft (5) is also connected to several stirring baffles (10). There are six stirring baffles (10) arranged in a ring at equal intervals.

4. The high-efficiency dissolving and stirring vessel for maleic anhydride according to claim 1, characterized in that: The heat-conducting shell (8) is made of copper.

5. The high-efficiency dissolving and stirring vessel for maleic anhydride according to claim 3, characterized in that: The stirring baffle (10) and the rotating shaft (5) are an integrated structure.

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