A distillation recovery apparatus for benzoic acid production

Abstract

This utility model discloses a distillation recovery device for benzoic acid production, including a distillation kettle and a condenser. The condenser is mounted on the top of the distillation kettle, and an outer shell is fixed to the outer wall of the condenser. A permeable mesh is fixed to the top of the outer shell. Arc-shaped grooves are formed on both sides of the outer shell, and sliders are slidably connected inside the arc-shaped grooves. A cleaning component is provided on the inner side of the slider. An upper retaining plate is fixed to the bottom of the condenser on the side away from the distillation kettle, and a lower retaining plate is attached to the bottom of the upper retaining plate. Support rods are fixed at equal intervals on the outer wall of the upper retaining plate, and fixing components are provided at the bottom of the support rods. A filter screen is fixed inside the lower retaining plate. The coordinated design of the condenser, upper retaining plate, lower retaining plate, and filter screen can filter impurities in the condensate generated during steam condensation, effectively improving the purity of the distilled water and ensuring the product quality in the benzoic acid production and recovery process.

Description

Technical Field

[0001] This utility model relates to the field of benzoic acid production technology, specifically to a distillation and recovery device for benzoic acid production. Background Technology

[0002] In the production of benzoic acid, distillation recovery is a crucial step in achieving product purification and resource reuse. Traditional distillation recovery equipment for benzoic acid production typically consists of a distillation kettle and a condenser. The raw material is heated in the distillation kettle, causing benzoic acid to enter the condenser as vapor. After condensation, pure benzoic acid is obtained. However, in actual production, the raw materials for benzoic acid production often contain impurities that are not easily volatile at distillation temperatures but can be carried out with the vapor, such as high-boiling-point organic impurities or solid particles. During distillation, these impurities enter the condenser along with the benzoic acid vapor and ultimately mix into the distilled liquid. This contamination not only reduces the purity of the benzoic acid product, affecting product quality, but can also clog condenser pipes, reduce equipment operating efficiency, and increase equipment maintenance costs and downtime for repairs. Furthermore, existing distillation recovery equipment has shortcomings in equipment protection and cleaning / maintenance, making it difficult to meet the demands of industrial production for efficient and stable operation. Therefore, there is an urgent need for a distillation recovery device for benzoic acid production that can effectively filter impurities, is easy to clean and maintain, and possesses good protective performance to solve the aforementioned technical problems. Utility Model Content

[0003] The purpose of this invention is to provide a distillation and recovery device for benzoic acid production, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a distillation recovery device for benzoic acid production, comprising a distillation kettle and a condenser. The condenser is installed at the top of the distillation kettle, and an outer shell is fixed to the outer wall of the condenser. A breathable mesh is fixed to the top of the outer shell. Arc-shaped grooves are provided on both sides of the outer shell, and a slider is slidably connected inside the arc-shaped grooves. A cleaning component is provided on the inner side of the slider. An upper retaining plate is fixed to the bottom end of the side of the condenser away from the distillation kettle. A lower retaining plate is attached to the bottom end of the upper retaining plate. Support rods are fixed at equal intervals on the outer wall of the upper retaining plate. A fixing component is provided at the bottom end of the support rods. A filter screen is fixed inside the lower retaining plate.

[0005] Preferably, the slider is H-shaped.

[0006] Preferably, the cleaning component includes a support base, which is fixed to the inner side of the slider. A cleaning plate is fixed to the top of the support base, and the top of the cleaning plate is in contact with the outer wall of the condenser. A drain pipe is fixed to the bottom of the outer shell.

[0007] Preferably, the fastener includes a sleeve, which is fixed to the outer wall of the lower buckle plate. A top block is sleeved on the outer wall of the support rod, and a threaded block is threadedly connected to the outer wall of the support rod. A spring is sleeved on the outer wall of the support rod, and the bottom end of the spring is connected to the top end of the top block, with the top end pressing against the bottom end of the sleeve.

[0008] Preferably, the inner wall of the top block is machined with a limiting block, and the limiting block is embedded inside the support rod.

[0009] Preferably, the outer wall of the support rod is threaded.

[0010] Preferably, a sealing strip is machined at the connection between the upper and lower buckle plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The design of the condenser in conjunction with the upper and lower mounting plates and the filter screen can filter impurities in the condensate generated during the steam condensation process, effectively improving the purity of the distilled water and ensuring the product quality in the benzoic acid production and recovery process.

[0013] The cleaning component, consisting of a slider, support base, and cleaning plate, can promptly remove water buildup on the outer wall of the condenser caused by temperature differences during operation, preventing scale buildup from affecting condensation efficiency. The drain pipe at the bottom of the casing allows users to easily discharge wastewater after cleaning, ensuring a clean environment around the equipment.

[0014] The lower and upper plates are connected by a fastener consisting of a sleeve, a top block, a spring, and a threaded block. When disassembling, simply rotate the threaded block to easily separate the lower and upper plates, making it convenient for users to clean the impurities trapped in the filter screen and reducing the difficulty and cost of equipment maintenance.

[0015] The slider adopts an I-shaped structure, which makes it more stable when sliding in the arc-shaped groove, ensuring the reliability of the cleaning parts. The connection between the upper and lower buckle plates is equipped with a sealing rubber ring, sealing groove and sealing strip, which, together with the compression and fixation of the spring, significantly enhances the overall sealing of the equipment, prevents steam leakage, and improves the safety and efficiency of distillation and recovery work.

[0016] The outer casing effectively prevents the equipment from rusting in humid environments. The ventilated mesh ensures smooth steam discharge while preventing debris from entering the casing. These dual protective measures extend the equipment's service life and reduce the risk of damage caused by environmental factors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1Detailed view of the connection structure of the intermediate condenser (front view section);

[0019] Figure 3 for Figure 2 Enlarged detail of the connection structure of the central fixing component;

[0020] Figure 4 for Figure 2 Detailed top view of the connection structure of the middle filter screen;

[0021] Figure 5 for Figure 2 Detailed view of the connection structure in a side cross-section.

[0022] In the diagram: 1. Distillation vessel, 2. Condenser, 3. Outer shell, 4. Vent mesh, 5. Slider, 6. Support base, 7. Cleaning plate, 8. Drain pipe, 9. Upper buckle plate, 10. Lower buckle plate, 11. Support rod, 12. Sleeve, 13. Top block, 14. Threaded block, 15. Spring, 16. Filter screen. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 This utility model provides a technical solution for a distillation recovery device for benzoic acid production: A distillation recovery device for benzoic acid production includes a distillation kettle 1 and a condenser 2. The condenser 2 is installed at the top of the distillation kettle 1, and an outer shell 3 is fixed to the outer wall of the condenser 2 to prevent rusting in humid environments. A permeable mesh 4 is fixed to the top of the outer shell 3, which ensures smooth steam discharge and prevents impurities from entering the shell. Arc-shaped grooves are provided on both sides of the outer shell 3, and sliders 5 are slidably connected inside the arc-shaped grooves. The sliders 5 have an I-beam structure design, making them more stable when sliding within the arc-shaped grooves. Cleaning components are provided on the inner side of the sliders 5.

[0025] An upper retaining plate 9 is fixed to the bottom of the condenser 2 on the side away from the distillation vessel 1. A sealing rubber ring is provided on the inner wall of the upper retaining plate 9 to further enhance the sealing performance. A lower retaining plate 10 is attached to the bottom of the upper retaining plate 9. A sealing groove is provided at the connection between the edge of the lower retaining plate 10 and the upper retaining plate for installing a sealing strip to ensure the sealing of the connection. Support rods 11 are fixed at equal intervals on the outer wall of the upper retaining plate 9. The top of the support rod 11 is fixed to the upper retaining plate 9 by welding, and the bottom end passes through the sleeve 12 on the lower retaining plate 10. A fixing part is provided at the bottom end of the support rod 11. A filter screen 16 is fixed inside the lower retaining plate 10. The slider 5 is I-shaped.

[0026] The cleaning component includes a support base 6, which is fixed inside the slider 5. The shape of the support base 6 is customized according to the curvature of the outer wall of the condenser 2 to ensure that the cleaning plate 7 can fit tightly against the outer wall of the condenser. The cleaning plate 7 is fixed to the top of the support base 6. The cleaning plate 7 is made of flexible rubber material and has fine wavy protrusions on its surface, which can effectively remove water from the outer wall of the condenser 2. The top of the cleaning plate 7 fits tightly against the outer wall of the condenser 2. A drain pipe 8 is fixed to the bottom of the outer casing 3. One end of the drain pipe 8 is connected to the bottom of the outer casing 3, and the other end is connected to a wastewater collection device. A shut-off valve is installed on the drain pipe to facilitate control of the drainage speed and closure of the drainage channel.

[0027] The fastener includes a sleeve 12, which is fixed to the outer wall of the lower buckle plate 10. The inner diameter of the sleeve 12 is slightly larger than the outer diameter of the support rod 11 to ensure that the support rod can pass through freely. A top block 13 is sleeved on the outer wall of the support rod 11. Under the action of the spring 15, the top block 13 tightly presses the upper buckle plate 9 and the lower buckle plate 10 together. A threaded block 14 is threadedly connected to the outer wall of the support rod 11. A spring 15 is sleeved on the outer wall of the support rod 11. The threaded fit between the spring 15 and the support rod 11 is highly precise and can provide reliable fastening force. By rotating the threaded block 14, the compression degree of the spring 15 can be adjusted, thereby adjusting the pressure between the upper buckle plate and the lower buckle plate. The bottom end of the spring 15 is connected to the top end of the top block 13, and the top end rests on the bottom end of the sleeve 12. A limit block is machined on the inner wall of the top block 13, and the limit block is embedded inside the support rod 11. The outer wall of the support rod 11 is threaded. A sealing strip is machined at the connection between the upper buckle plate 9 and the lower buckle plate 10.

[0028] Working Principle: When a distillation and recovery device for benzoic acid production is first put into use, steam enters the condenser 2 during the operation of the distillation kettle 1. The condensate produced during condensation falls downwards through the upper plate 9. As the distilled water falls onto the filter screen 16, impurities are filtered out. The filtered water is then discharged from the bottom of the lower plate 10. During operation, the temperature difference between the outer wall of the condenser 2 and the air causes water to accumulate on its surface. To clean the water from the outer wall of the condenser 2, the user first pulls the slider 5. Pulling the slider 5 causes the support base 6 to move along the arc-shaped groove. During this movement, the cleaning plate 7 moves against the outer wall of the condenser 2, cleaning the outer wall. The cleaned water then falls downwards. The water can be drained and cleaned through the drain pipe 8 after it falls to the bottom of the outer casing 3. When it is necessary to clean the impurities filtered out by the filter screen 16, the user first rotates the threaded block 14 and moves it downward on the outer wall of the support rod 11. When moving, it drives the top block 13 to move downward. Then the user pulls the lower buckle plate 10 downward to separate the lower buckle plate 10 from the upper buckle plate 9. After separation, the user can clean the impurities in the filter screen 16. After cleaning, the user pushes the lower buckle plate 10 upward through the sleeve 12 to the support rod 11. Then the top block 13 drives the spring 15 to be sleeved on the outer wall of the support rod 11. Then the threaded block 14 is rotated to push the top block 13 upward. When pushing, the spring 15 is squeezed by the sleeve 12. When squeezing, the elastic force of the spring 15 pulls the support rod 11 downward, indirectly squeezing and fixing the connection between the upper buckle plate 9 and the lower buckle plate 10.

Claims

1. A distillation recovery apparatus for benzoic acid production comprising a distillation still (1) and a condenser (2), the distillation still (1) being provided at its top end with a condenser (2), characterized in that, The outer wall of the condenser (2) is fixed with a shell (3), the top of the shell (3) is fixed with a breathable mesh (4), the two sides of the shell (3) are provided with arc-shaped sliding grooves, and the inside of the arc-shaped sliding grooves is connected with a slider (5). The inner side of the slider (5) is provided with a cleaning component. The bottom of the side of the condenser (2) away from the distillation vessel (1) is fixed with an upper buckle plate (9), the bottom of the upper buckle plate (9) is attached to a lower buckle plate (10), the outer wall of the upper buckle plate (9) is fixed with support rods (11) at equal intervals, the bottom of the support rods (11) is provided with a fixing component, and the inside of the lower buckle plate (10) is fixed with a filter screen (16).

2. The distillation recovery apparatus for benzoic acid production according to claim 1, characterized by, The slider (5) is I-shaped.

3. The distillation recovery apparatus for benzoic acid production according to claim 1, characterized by, The cleaning component includes a support base (6), which is fixed to the inner side of the slider (5). A cleaning plate (7) is fixed to the top of the support base (6), and the top of the cleaning plate (7) is attached to the outer wall of the condenser (2). A drain pipe (8) is fixed to the bottom of the outer shell (3).

4. The distillation recovery apparatus for benzoic acid production according to claim 1, characterized by The fastener includes a sleeve (12), which is fixed to the outer wall of the lower buckle plate (10). A top block (13) is sleeved on the outer wall of the support rod (11). A threaded block (14) is threadedly connected to the outer wall of the support rod (11). A spring (15) is sleeved on the outer wall of the support rod (11), and the bottom end of the spring (15) is connected to the top end of the top block (13), with the top end pressing against the bottom end of the sleeve (12).

5. The distillation recovery apparatus for benzoic acid production according to claim 4, characterized by The inner wall of the top block (13) is machined with a limiting block, and the limiting block is embedded inside the support rod (11).

6. The distillation recovery apparatus for benzoic acid production according to claim 4, characterized by The outer wall of the support rod (11) is threaded.

7. The distillation recovery apparatus for benzoic acid production according to claim 1, wherein A sealing strip is processed at the connection between the upper buckle plate (9) and the lower buckle plate (10).

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