Oxalic acid finished product powder redissolution crystallization reaction kettle

Abstract

The utility model relates to the field of chemical synthesis, and discloses an oxalic acid finished product powder redissolution crystallization reaction kettle which comprises an upper cover, a reaction cylinder and a mounting base, the upper cover is fixedly mounted at the top end of the reaction cylinder, and the mounting base is arranged on one side, deviating from the upper cover, of the reaction cylinder; according to the stirring device, a motor is adopted to drive stirring blades to efficiently rotate in a reaction cylinder, the unique teardrop-shaped design of the stirring blades is matched with a plurality of groups of crushing holes which are arranged in a spiral, radial or latticed manner, so that the stirring efficiency is greatly improved, and the design ensures uniform redissolution and crystallization of oxalic acid finished product powder; the material agglomeration phenomenon possibly occurring in the traditional stirring process is effectively avoided, the uniformity and quality of products are improved, the tear drop-shaped edges of the stirring blades are passivated, abrasion to the wall of the reaction cylinder in the stirring process is remarkably reduced, the service life of equipment is prolonged, the influence of impurities generated by abrasion on the quality of the products is reduced, and the production efficiency is improved. And the purity of the product is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical synthesis, specifically to a reaction vessel for the remelting and crystallization of oxalic acid powder. Background Technology

[0002] Oxalic acid powder is an important organic chemical raw material, widely used in the preparation of various dyes, pharmaceuticals, solvents, extractants, and intermediates. With the continuous development of the chemical industry, the demand for oxalic acid powder is also increasing. This has driven the research and development and application of oxalic acid powder remelting and crystallization reactors. Traditional stirring devices may have low stirring efficiency due to unreasonable design, which cannot ensure the uniform remelting and crystallization of oxalic acid powder. Traditional stirring processes are prone to wear and tear on the reaction vessel wall, generating impurities, affecting product quality and equipment lifespan. The lack of real-time reaction monitoring means that operators cannot accurately grasp the pressure and temperature changes inside the reactor, affecting the safety and stability of the reaction. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a reaction vessel for the remelting and crystallization of oxalic acid powder, thus solving the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a reaction vessel for the remelting and crystallization of oxalic acid powder, comprising a top cover, a reaction cylinder, and a mounting base. The top cover is fixedly installed on the top of the reaction cylinder, and the mounting base is provided on the side of the reaction cylinder opposite to the top cover. Multiple sets of columns are fixedly installed on the top of the mounting base, and the mounting base is fixedly installed together with the reaction cylinder through the multiple sets of columns. The device also includes:

[0007] The stirring device includes a motor, stirring blades, and a mounting shell. The mounting shell is fixedly installed at the bottom of the reaction cylinder, and the motor is fixedly installed inside the mounting shell. The output shaft of the motor extends through the interior of the reaction cylinder and is fixedly installed with multiple sets of stirring blades. The side of the multiple sets of stirring blades away from the output shaft is teardrop-shaped, and multiple sets of breaking holes are provided on the teardrop-shaped side. The multiple sets of breaking holes are arranged in a spiral, radial, or grid pattern. The teardrop-shaped edges of the multiple sets of stirring blades are passivated to reduce wear on the container wall during stirring.

[0008] Preferably, a collection pipe is fixedly installed at the center of the top of the cover, a pressure gauge is fixedly installed on one side of the top of the cover, and a discharge port is fixedly installed on the side of the top of the cover away from the pressure gauge.

[0009] Preferably, a monitoring computer is fixedly installed on one side of the reaction cylinder, a steam generator is fixedly installed on the side of the reaction cylinder near the monitoring computer, and a water outlet is fixedly installed at the bottom of the reaction cylinder near the monitoring computer.

[0010] Preferably, a temperature gauge is fixedly installed on the side of the reaction cylinder away from the monitoring computer.

[0011] Preferably, the reaction cylinder has an internal jacket, and one side of the steam generator is connected to the internal jacket of the reaction cylinder through a pipeline.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a reaction vessel for the remelting and crystallization of oxalic acid powder, which has the following beneficial effects:

[0014] 1. The stirring blade design in the oxalic acid powder remelting and crystallization reactor (patent number CN220194841U) is relatively simple and does not mention any special design or measures to prevent material agglomeration. It only mentions that stirring blades are installed on the stirring shaft, but does not describe the shape, arrangement, or special design of the stirring blades in detail. This simple design may not be sufficient to ensure that the material is fully mixed and uniformly heated in the reactor, thus affecting the crystallization effect and product quality. The stirring device in this device uses a motor to drive the stirring blades to rotate efficiently in the reaction cylinder. The unique teardrop-shaped design of the stirring blades, combined with multiple sets of spiral, radial, or grid-like crushing holes, greatly improves the stirring efficiency. This design ensures the uniform remelting and crystallization of the oxalic acid powder, effectively avoiding the material agglomeration that may occur in traditional stirring processes, improving the uniformity and quality of the product. The teardrop-shaped edges of the stirring blades are passivated, which significantly reduces the wear on the reaction cylinder wall during stirring, extends the service life of the equipment, reduces the impact of impurities caused by wear on product quality, and improves the purity of the product.

[0015] 2. The oxalic acid finished product powder remelting and crystallization reactor has a monitoring computer that can receive and display data from sensors such as pressure gauges and temperature gauges in real time, enabling operators to intuitively understand key parameters such as pressure and temperature inside the reactor and promptly detect abnormalities or potential safety hazards during reactor operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional side view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the reaction cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the upper cover structure of this utility model.

[0020] In the diagram: 1. Top cover; 2. Reaction cylinder; 3. Mounting base; 4. Monitoring computer; 5. Steam generator; 6. Water outlet; 7. Pressure gauge; 8. Feed outlet; 9. Collection pipe; 10. Column; 11. Motor; 12. Stirring blade; 13. Thermometer; 14. Jacket; 15. Mounting shell. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 A reaction vessel for the remelting and crystallization of oxalic acid powder includes a top cover 1, a reaction cylinder 2, and a mounting base 3. The top cover 1 is fixedly installed on the top of the reaction cylinder 2, and the mounting base 3 is located on the side of the reaction cylinder 2 away from the top cover 1. Multiple sets of columns 10 are fixedly installed on the top of the mounting base 3, and the mounting base 3 is fixedly installed together with the reaction cylinder 2 through the multiple sets of columns 10. The vessel also includes a stirring device including a motor 11, stirring blades 12, and a mounting shell 15. The mounting shell 15 is fixedly installed on the bottom of the reaction cylinder 2, and the motor 11 is fixedly installed inside the mounting shell 15. The output shaft of the motor 11 extends through the interior of the reaction cylinder 2 and is fixedly installed with multiple sets of stirring blades 12. The side of the stirring blades 12 away from the output shaft is teardrop-shaped, and multiple sets of breaking holes are provided on the teardrop-shaped side. The multiple sets of breaking holes are arranged in a spiral, radial, or grid pattern. The teardrop-shaped edges of the multiple sets of stirring blades 12 are passivated to reduce wear on the container wall during stirring. The mixing device drives the stirring blades 12 to rotate efficiently inside the reaction cylinder 2 via the motor 11. Its unique teardrop-shaped design, combined with multiple sets of spiral, radial, or grid-like crushing holes, not only greatly improves the mixing efficiency and ensures the uniform redissolution and crystallization of the oxalic acid powder, but also effectively avoids the material agglomeration that may occur during traditional mixing. In addition, the passivation treatment of the edges of the stirring blades 12 significantly reduces the wear on the reaction cylinder wall, extends the service life of the equipment, and reduces the impact of impurities caused by wear on product quality, thereby improving production efficiency and product purity.

[0023] Furthermore, a collection pipe 9 is fixedly installed at the top center of the top of the upper cover 1, a pressure gauge 7 is fixedly installed on one side of the top of the upper cover 1, and a discharge port 8 is fixedly installed on the side of the top of the upper cover 1 away from the pressure gauge 7. The collection pipe 9 set at the top center of the upper cover 1 facilitates the collection of gas or vapor generated during the reaction process, ensuring the pressure inside the reactor is stable and facilitating subsequent processing. The pressure gauge 7 can monitor the pressure changes inside the reactor in real time, providing important reference data for operators and ensuring the safety and stability of the reaction process.

[0024] Furthermore, a monitoring computer 4 is fixedly installed on one side of the reaction vessel 2, a steam generator 5 is fixedly installed on the side of the reaction vessel 2 near the monitoring computer 4, and a drain outlet 6 is fixedly installed at the bottom of the reaction vessel 2 near the monitoring computer 4. The introduction of the monitoring computer 4 enables real-time monitoring of the operating status of the reactor. Although it is only used for monitoring and does not have control functions, it can promptly detect and warn of potential safety hazards by connecting with sensors such as pressure gauge 7 and temperature gauge 13, thereby improving the safety performance of the equipment. The steam generator 5 provides a stable heat source for the reactor. It is connected to the jacket 14 inside the reaction vessel through pipelines, which enables precise control of the reaction temperature, helps to optimize reaction conditions, and improve product quality. The drain outlet 6 facilitates cleaning of the reactor or discharge of wastewater when needed, keeping the equipment clean and hygienic.

[0025] Furthermore, a thermometer 13 is fixedly installed on the side of the reaction vessel 2 away from the monitoring computer 4. The thermometer 13 can display the temperature inside the reaction vessel in real time, providing the operator with intuitive temperature data. This is crucial for the remelting and crystallization process of oxalic acid powder, which requires strict control of the reaction temperature. It helps the operator to adjust the output power of the steam generator 5 or take other measures to maintain the stability of the reaction temperature, thereby ensuring the quality and stability of the product.

[0026] Furthermore, a jacket 14 is provided inside the reaction chamber 2. One side of the steam generator 5 is connected to the jacket 14 inside the reaction chamber 2 via a pipeline. The jacket 14 inside the reaction chamber 2 is connected to the steam generator 5, forming an independent heating system. This design not only improves heating efficiency but also enables precise control of the reaction temperature. The steam in the jacket 14 can evenly transfer heat to the reactants, avoiding local overheating or uneven temperature, which helps to optimize reaction conditions and improve product purity and yield.

[0027] Working principle: First, the device stably supports the reaction cylinder 2 through the mounting base 3 and the column 10, ensuring the stability of the entire reaction process. At the top of the cover 1, the collection pipe 9 is responsible for collecting the gas or steam generated during the reaction to maintain the pressure inside the reactor and facilitate subsequent processing. The pressure gauge 7 monitors the pressure changes inside the reactor in real time, providing key safety reference data for the operator. At the start of the reaction, the operator puts the oxalic acid powder into the reaction cylinder 2 through the feed port 8. Then, the steam generator 5 is started, and steam is delivered to the jacket 14 inside the reaction cylinder 2 through the pipeline to form an independent heating system. This system not only improves heating efficiency but also ensures precise control of the reaction temperature, avoiding local overheating or uneven temperature, thereby optimizing reaction conditions. Simultaneously, the monitoring computer 4 starts working. Although it only has monitoring functions, through connection with sensors such as pressure gauge 7 and temperature gauge 13, it can acquire the real-time operating status of the reactor, promptly detect and warn of potential safety hazards, and ensure the safety performance of the equipment. During the reaction, the motor 11 drives the stirring blade 12 to rotate efficiently within the reaction cylinder 2. The stirring blade 12 has a teardrop shape, which is beneficial for generating eddies and shear forces during rotation, effectively breaking up agglomerates. The wide bottom covers a larger stirring area, promoting uniform mixing of materials. Spiral, radial, or grid-like breaking holes are arranged on the stirring blade, playing a crucial role in the stirring process. These holes allow materials to pass through and generate shear forces during rotation, further refining material particles. At the same time, the design of the breaking holes also helps increase the contact area between the stirring blade 12 and the material, improving stirring efficiency. As the stirring blade 12 rotates at high speed, the material forms eddies and circulates within the reaction cylinder 2. This flow pattern helps to carry materials from the bottom to the top of the reaction vessel and then back down, achieving thorough mixing. Simultaneously, the rotation of the stirring blades 12 generates shear force, further refining the material particles. The edges of the stirring blades 12 are passivated to reduce wear on the reaction vessel wall during mixing. This design extends the service life of the stirring blades 12 and the reaction vessel 2, and reduces the impact of wear-related impurities on product quality. The temperature gauge 13 displays the real-time temperature inside the reactor, providing operators with intuitive temperature data. Based on this data, operators can adjust the output power of the steam generator 5 or take other measures to maintain a stable reaction temperature, thus ensuring product quality and stability. After the reaction is complete, operators can clean the reactor or discharge wastewater through the drain port 6 to maintain the cleanliness and hygiene of the equipment.

[0028] 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 reaction vessel for the remelting and crystallization of oxalic acid powder, comprising a top cover (1), a reaction cylinder (2), and a mounting base (3), wherein the top cover (1) is fixedly installed on the top of the reaction cylinder (2), and the mounting base (3) is provided on the side of the reaction cylinder (2) away from the top cover (1), wherein multiple sets of columns (10) are fixedly installed on the top of the mounting base (3), and the mounting base (3) is fixedly installed together with the reaction cylinder (2) through the multiple sets of columns (10), characterized in that, Also includes: The stirring device includes a motor (11), stirring blades (12), and a mounting shell (15). The mounting shell (15) is fixedly installed at the bottom of the reaction cylinder (2). The motor (11) is fixedly installed inside the mounting shell (15). The output shaft of the motor (11) extends through to the inside of the reaction cylinder (2) and is fixedly installed with multiple sets of stirring blades (12). The side of the multiple sets of stirring blades (12) away from the output shaft is teardrop-shaped, and multiple sets of breaking holes are provided on the teardrop-shaped side. The multiple sets of breaking holes are arranged in a spiral, radial, or grid pattern. The teardrop-shaped edges of the multiple sets of stirring blades (12) are blunted to reduce wear on the container wall during stirring.

2. The oxalic acid finished powder remelting and crystallization reactor according to claim 1, characterized in that: A collection tube (9) is fixedly installed at the top center of the top of the cover (1), a pressure gauge (7) is fixedly installed on one side of the top of the cover (1), and a discharge port (8) is fixedly installed on the side of the top of the cover (1) away from the pressure gauge (7).

3. The oxalic acid finished powder remelting and crystallization reactor according to claim 1, characterized in that: A monitoring computer (4) is fixedly installed on one side of the reaction cylinder (2), a steam generator (5) is fixedly installed on the side of the reaction cylinder (2) close to the monitoring computer (4), and a water outlet (6) is fixedly installed at the bottom of the reaction cylinder (2) close to the monitoring computer (4).

4. The oxalic acid finished powder remelting and crystallization reactor according to claim 3, characterized in that: A thermometer (13) is fixedly installed on the side of the reaction cylinder (2) away from the monitoring computer (4).

5. The oxalic acid finished powder remelting and crystallization reactor according to claim 3, characterized in that: The reaction cylinder (2) has an internal interlayer (14), and one side of the steam generator (5) is connected to the interlayer (14) inside the reaction cylinder (2) through a pipeline.

Images