A deacidification device for synthetic ester production

Abstract

The utility model provides a kind of deacidification device for synthetic ester production.The deacidification device for synthetic ester production includes: installation chassis;Mounting rack, the mounting rack is fixedly connected at the top of installation chassis, the front of the mounting rack is close to the position of top and is equipped with first deacidification tank by heating fixed frame installation, the top of the first deacidification tank is equipped with second spraying assembly, the top of the second spraying assembly is equipped with inlet pipe, the bottom of the first deacidification tank is equipped with first valve, one side of the mounting rack is equipped with two vacuum equipments, the inlet of the vacuum equipment is equipped with vacuum head by vacuum tube.The deacidification device for synthetic ester production provided by the utility model significantly improves the deacidification depth, meets the demand of high-end products, greatly improves the purity of recovered organic acid, can be directly reused without additional purification, improves the utilization rate of raw materials, and gradient temperature and pressure design can effectively reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of synthetic ester production technology, and in particular to a deacidification device for synthetic ester production. Background Technology

[0002] Synthetic ester production is an industrial process that uses alcohols and carboxylic acids / fatty acids or esters as raw materials to prepare synthetic esters through esterification or transesterification reactions. The production process requires core steps such as raw material pretreatment, catalytic reaction, deacidification and dehydration, and distillation purification. By adjusting the raw material ratio and process parameters, the molecular weight, viscosity and other properties of the product can be precisely controlled. The products have advantages such as high temperature resistance, anti-aging, and environmental protection, and are widely used in lubricating oils, coatings, plasticizers, pharmaceutical intermediates and other fields. It is a type of fine chemical production process with controllable performance.

[0003] The synthetic ester production process involves first adding acids such as oleic acid and octanoic acid, as well as alcohols such as glycerol and trimethylolpropane, to the esterification reactor according to the process ratio. The mixture is stirred, nitrogen is introduced, antioxidants are added, and the esterification reaction is carried out at approximately 140°C. The product water is separated and reused or sent to wastewater treatment. The product is deacidified at 190°C to recover organic acids. The crude product is temporarily stored by pressure filtration, and fatty acids are recovered from impurities. Residual acids are neutralized with sodium hydroxide solution, and soap residue is recovered, acidified, and reused. After wastewater treatment, the crude product is dehydrated, treated with activated clay, and carbonized by pressure filtration to obtain the finished product. The product is then transported by tanker truck or packaged in drums as needed. The deacidification process is a crucial step in the synthetic ester production process. Unreacted fatty acids remain in the crude synthetic ester product after the esterification reaction, requiring a deacidification device to volatilize and separate the residual organic acids, thereby reducing the acid value of the crude synthetic ester product to a level that meets the requirements of subsequent refining.

[0004] Existing methods for deacidifying synthetic esters often employ single-stage flash evaporation or distillation units. During operation, the material resides in the equipment for a short time, resulting in insufficient volatilization of organic acids. Consequently, the acid value of the product remains at a high level. Furthermore, the pressure and temperature conditions of a single-stage unit are fixed, making it difficult to achieve simultaneous volatilization of high-boiling-point and low-boiling-point organic acids. This results in insufficient purity of the recovered organic acids.

[0005] Therefore, it is necessary to provide a deacidification apparatus for synthetic ester production to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides a deacidification device for synthetic ester production, which solves the problems of insufficient volatilization of organic acids and difficulty in simultaneous volatilization and recovery of acid values ​​due to the short material residence time of existing single-stage flash evaporation or distillation devices used for deacidification of synthetic esters, which are difficult to achieve at high temperature and pressure.

[0007] To solve the above-mentioned technical problems, the deacidification device for synthetic ester production provided by this utility model includes: a mounting base; The mounting frame is fixedly connected to the top of the mounting base. A first deacidification tank is mounted on the front of the mounting frame near the top via a heating mounting bracket. A second spraying assembly is mounted on the top of the first deacidification tank. An inlet pipe is mounted on the top of the second spraying assembly. A first valve is mounted on the bottom of the first deacidification tank. Two vacuum devices are mounted on one side of the mounting frame. Vacuum heads are mounted on the inlets of the vacuum devices via vacuum pipes. The second deacidification tank is mounted on the front of the mounting frame near the bottom via a heating fixing bracket. A first spraying assembly is mounted on the top of the second deacidification tank, and a liquid storage frame is mounted on the top of the first spraying assembly. A discharge pipe is mounted on the bottom of the second deacidification tank. An injection pipe is mounted on the top of both the second and first deacidification tanks. A filter plate is installed inside both the second and first deacidification tanks. A first cleaning frame is mounted inside both the second and first deacidification tanks via a drive assembly. The heating fixture includes a frame for fixing and a heating device. The heating device is installed between the frame and the deacidification tank and can be electric or electromagnetic. Two vacuum heads are installed on the top of the two deacidification tanks respectively. An injection pipe can inject auxiliary deacidification agents and is equipped with a valve. The spraying assembly can move downwards by the weight of the liquid. A valve is also installed on the discharge pipe. The top inlet of the liquid storage frame is connected to the bottom of the first valve. The drive assembly and the first cleaning frame are located above the filter plate. The first cleaning frame is in contact with the top of the filter plate. The drive assembly consists of a corrosion-resistant housing, a motor, and a shaft. A mechanical seal is used at the connection between the shaft and the housing to reduce corrosion during rotation. The vacuum device includes a housing and a vacuum pump.

[0008] Preferably, a control box with a door is installed on the top of the mounting base, and an operation panel is installed on one side of the control box; The control panel allows users to set the equipment's operating parameters. The door is equipped with a lock, and the control box contains a power switch and a controller for auxiliary equipment operation.

[0009] Preferably, the mounting base includes a base plate, a mounting structure, and an adjustment structure, wherein the mounting structure is used to mount the adjustment structure to the bottom of the base plate.

[0010] Preferably, a monitoring assembly is installed on the top of both the second deacidification tank and the first deacidification tank. The monitoring assembly includes a fixed base and a monitoring component. The fixed base is used to fix the monitoring component to the top of the deacidification tank. The monitoring end of the monitoring component is inserted into the deacidification tank to monitor temperature and pressure.

[0011] Preferably, the drive assembly includes a bracket and a drive structure, the bracket being used to install the drive structure inside the deacidification tank.

[0012] Preferably, the first spraying assembly includes a second valve, a connecting pipe, a diversion ring, and multiple spray heads. The connecting pipe penetrates the top of the deacidification tank to install the diversion ring on the top of the inner wall of the deacidification tank. The multiple spray heads are installed at the bottom of the diversion ring. The second valve is installed before the connecting pipe and the liquid storage frame. The spray head can be one that can dispense liquid without pressure, making it easy to evenly introduce the synthetic ester into the deacidification tank.

[0013] Preferably, a second cleaning rack is installed at the bottom of both drive components, and a conical interception component is installed inside both the second deacidification tank and the first deacidification tank; The shape of the cleaning rack depends on the requirements.

[0014] Preferably, the conical interception assembly includes a fixing ring, a conical interception component, a drain pipe, and a drain valve. The fixing ring is used to install the conical interception component inside the deacidification tank. The drain pipe passes through the deacidification tank and is installed at the bottom end of the conical interception component. The drain valve is installed at the other end of the drain pipe.

[0015] Compared with related technologies, the deacidification device for synthetic ester production provided by this utility model has the following beneficial effects: This invention provides a deacidification device for synthetic ester production. To improve the deacidification effect during the synthetic ester production process, a first deacidification tank and a second deacidification tank are installed on the front of the mounting frame via two heated fixing brackets. This not only fixes the first and second deacidification tanks but also provides them with temperatures of 170°C and 198°C respectively. Furthermore, a vacuum device is installed in each of the first and second deacidification tanks to reduce the internal pressure to 0.08MPa to 0.09MPa. The temperature and pressure gradient promotes the gradual volatilization of organic acids with different boiling points. Combined with a filter disc, the synthetic ester can be filtered during the deacidification process, improving efficiency and facilitating subsequent processing. This design significantly enhances the deacidification depth, meeting the demands of high-end products. The purity of the recovered organic acids is greatly improved, allowing for direct reuse without additional purification, thus increasing raw material utilization. The gradient temperature and pressure design also effectively reduces energy consumption. Attached Figure Description

[0016] Figure 1 A schematic diagram of the first embodiment of the deacidification apparatus for synthetic ester production provided by this utility model; Figure 2 A structural diagram illustrating the installation structure of this utility model is provided. Figure 3 A schematic diagram of the filter disc structure is provided for this utility model; Figure 4Provided for this utility model Figure 3 An enlarged view of point A shown; Figure 5 Provided for this utility model Figure 3 An enlarged view of point B shown; Figure 6 A schematic diagram of the second embodiment of the deacidification apparatus for synthetic ester production provided by this utility model; Figure 7 Provided for this utility model Figure 6 A magnified view of point C shown.

[0017] Numbered in the diagram: 1. Mounting base; 101. Base plate; 102. Mounting structure; 103. Adjustment structure; 2. Mounting frame; 3. Monitoring component; 301. Fixed base; 302. Monitoring component; 4. First spraying component; 401. Second valve; 402. Connecting pipe; 403. Diverting ring; 404. Spray head; 5. Liquid storage frame; 6. First valve; 7. Heating fixing frame; 8. First deacidification tank; 9. Injection pipe; 10. Inlet pipe; 11. Second... 12. Spraying assembly, 13. Vacuum head, 14. Vacuum tube, 15. Vacuum equipment, 16. Second deacidification tank, 17. Operation panel, 18. Control box, 19. Box door, 20. Discharge pipe, 21. Filter plate, 21. Drive assembly, 211. Bracket, 212. Drive structure, 22. First cleaning frame, 23. Conical interception assembly, 231. Fixing ring, 232. Conical interception component, 233. Sewage pipe, 234. Sewage valve, 24. Second cleaning frame. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] First Embodiment

[0020] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of the first embodiment of the deacidification apparatus for synthetic ester production provided by this utility model; Figure 2 A structural diagram illustrating the installation structure of this utility model is provided. Figure 3 A schematic diagram of the filter disc structure is provided for this utility model; Figure 4 Provided for this utility model Figure 3 An enlarged view of point A shown; Figure 5 Provided for this utility model Figure 3 The enlarged view at point B is shown. The deacidification unit for synthetic ester production includes: mounting frame 1; Mounting frame 2 is fixedly connected to the top of mounting base 1. A first deacidification tank 8 is mounted on the front of the mounting frame 2 near the top via a heating fixing frame 7. A second spraying assembly 11 is mounted on the top of the first deacidification tank 8. An inlet pipe 10 is mounted on the top of the second spraying assembly 11. A first valve 6 is mounted on the bottom of the first deacidification tank 8. Two vacuum devices 14 are mounted on one side of the mounting frame 2. A vacuum head 12 is mounted on the inlet of the vacuum device 14 via a vacuum pipe 13. The second deacidification tank 15 is mounted on the front of the mounting frame 2 near the bottom via a heating fixing bracket 7. A first spraying assembly 4 is mounted on the top of the second deacidification tank 15, and a liquid storage frame 5 is mounted on the top of the first spraying assembly 4. A discharge pipe 19 is mounted on the bottom of the second deacidification tank 15. An injection pipe 9 is mounted on the top of the second deacidification tank 15 and the first deacidification tank 8. A filter plate 20 is installed inside both the second deacidification tank 15 and the first deacidification tank 8. A first cleaning frame 22 is mounted inside the second deacidification tank 15 and the first deacidification tank 8 via a drive assembly 21. The heating mounting bracket 7 includes a bracket for fixing and a heating device. The heating device is installed between the bracket and the deacidification tank and can be electric or electromagnetic. Two vacuum heads 12 are installed on the top of the two deacidification tanks respectively. The injection pipe 9 can inject auxiliary deacidification agents. A valve is installed on the injection pipe 9. The spraying component can move downwards by the weight of the liquid. A valve is also installed on the discharge pipe 19. The top inlet of the liquid storage frame 5 is connected to the bottom of the first valve 6. The drive assembly 21 and the first cleaning frame 22 are located above the filter plate 20. The first cleaning frame 22 is in contact with the top of the filter plate 20. The drive assembly 21 consists of a corrosion-resistant housing, a motor, and a shaft. A mechanical seal is installed at the connection between the shaft and the housing to reduce corrosion during rotation. The vacuum device 14 includes a housing and a vacuum pump. A valve is installed on the vacuum pipe 13 and can be opened when needed. All valves can be intelligently controlled to open and close.

[0021] Please refer to Figure 1 A control box 17 with a door 18 is installed on the top of the mounting base 1, and an operation panel 16 is installed on one side of the control box 17. The control panel 16 allows setting the operating parameters of the equipment. The door 18 is equipped with a lock. The control box 17 contains a power switch and a controller for the operation of auxiliary equipment.

[0022] Please refer to Figure 1 and Figure 2 The mounting base 1 includes a base plate 101, a mounting structure 102, and an adjustment structure 103. The mounting structure 102 is used to mount the adjustment structure 103 to the bottom of the base plate 101. The threaded connection between the mounting structure 102 and the adjusting structure 103 can adjust the stability of the base plate 101.

[0023] Please refer to Figure 1 and Figure 2 The top of the second deacidification tank 15 and the first deacidification tank 8 are both equipped with a monitoring component 3. The monitoring component 3 includes a fixed base 301 and a monitoring component 302. The fixed base 301 is used to fix the monitoring component 302 to the top of the deacidification tank. The monitoring end of the monitoring component 302 is inserted into the interior of the deacidification tank to monitor temperature and pressure.

[0024] Please refer to Figure 3 and Figure 4 The drive assembly 21 includes a bracket 211 and a drive structure 212, wherein the bracket 211 is used to install the drive structure 212 inside the deacidification tank; The drive structure 212 provides rotational drive force for the cleaning frame.

[0025] Please refer to Figure 3 and Figure 5 The first spraying assembly 4 includes a second valve 401, a connecting pipe 402, a diversion ring 403, and a plurality of spray heads 404. The connecting pipe 402 penetrates the top of the deacidification tank and is used to install the diversion ring 403 on the top of the inner wall of the deacidification tank. The plurality of spray heads 404 are installed at the bottom of the diversion ring 403. The second valve 401 is installed before the connecting pipe 402 and the liquid storage frame 5. The 404 spray head can be a spray head that can dispense liquid without pressure, making it convenient to evenly introduce the synthetic ester into the deacidification tank.

[0026] The working principle of the deacidification device for synthetic ester production provided by this utility model is as follows: The first deacidification tank 8 and the second deacidification tank 15 are mounted on the front of the mounting frame 2 using two heated fixing brackets 7. This fixes the first and second deacidification tanks 8 and 15, respectively, and provides them with temperatures of 170°C or 198°C. A vacuum device 14 is installed on each of the first and second deacidification tanks 8 and 15 to reduce the internal pressure to 0.08MPa to 0.09MPa. The temperature and pressure gradients promote the gradual volatilization of organic acids with different boiling points. Combined with a filter disc 20, the synthesized esters can be filtered during the deacidification process, improving efficiency and facilitating subsequent processing. In actual use, the heated fixing brackets 7 are used to secure the first and second deacidification tanks 8 and 15. 8. The first deacidification tank 8 and the second deacidification tank 15 are heated to the corresponding temperature. At the same time, the vacuum equipment 14 reduces the pressure of the first deacidification tank 8 and the second deacidification tank 15 to maintain the corresponding vacuum environment. Then, the second spray component 11 is opened and the first valve 6 is closed to allow the crude synthetic ester generated after the esterification reaction to enter the interior of the first deacidification tank 8. Under the corresponding temperature and vacuum conditions, deacidification and filtration are carried out. After the deacidification is completed in the first deacidification tank 8, the first valve 6 is opened to allow the synthetic ester after the initial deacidification to be injected into the interior of the storage frame 5. After a certain amount is reached, the first valve 6 is closed and the first spray component 4 is opened to allow the synthetic ester to enter the second deacidification tank 15 for secondary deacidification under the corresponding temperature and vacuum environment. Finally, the discharge pipe 19 valve is opened to discharge the ester for subsequent processing.

[0027] Compared with related technologies, the deacidification device for synthetic ester production provided by this utility model has the following beneficial effects: To improve the deacidification effect in the synthetic ester production process, the first deacidification tank 8 and the second deacidification tank 15 are installed on the front of the mounting frame 2 via two heated fixing brackets 7. This not only fixes the first and second deacidification tanks 8 and 15, but also provides them with temperatures of 170°C and 198°C respectively. Furthermore, a vacuum device 14 is installed in each of the first and second deacidification tanks 8 and 15 to reduce the internal pressure to 0.08MPa to 0.09MPa. The temperature and pressure gradient promotes the gradual volatilization of organic acids with different boiling points. Combined with a filter disc 20, the synthetic ester can be filtered during the deacidification process, improving efficiency and facilitating subsequent processing. This design significantly enhances the deacidification depth, meeting the needs of high-end products. The purity of the recovered organic acids is greatly improved, allowing for direct reuse without additional purification, thus increasing raw material utilization. The gradient temperature and pressure design also effectively reduces energy consumption.

[0028] Second Embodiment

[0029] Please refer to the following: Figures 6-7 , Figure 6A schematic diagram of the second embodiment of the deacidification apparatus for synthetic ester production provided by this utility model; Figure 7 Provided for this utility model Figure 6 The enlarged view at point C shows a deacidification apparatus for synthetic ester production based on the first embodiment of this application. The second embodiment of this application proposes another deacidification apparatus for synthetic ester production. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0030] Specifically, the difference in the deacidification apparatus for synthetic ester production provided in the second embodiment of this application is that, please refer to... Figure 6 and Figure 7 The bottom of each of the two drive components 21 is equipped with a second cleaning rack 24, and the interior of the second deacidification tank 15 and the first deacidification tank 8 is equipped with a conical interception component 23. The shape of the cleaning rack 24 is determined according to the requirements, and the inner surface of the second cleaning rack 24 contacts the conical interception assembly 23.

[0031] Please refer to Figure 6 and Figure 7 The conical interception assembly 23 includes a fixing ring 231, a conical interception component 232, a drain pipe 233, and a drain valve 234. The fixing ring 231 is used to install the conical interception component 232 inside the deacidification tank. The drain pipe 233 penetrates the deacidification tank and is installed at the bottom end of the conical interception component 232. The drain valve 234 is installed at the other end of the drain pipe 233. The cone-shaped interceptor component 232 has its opening facing upwards.

[0032] Compared with related technologies, the deacidification device for synthetic ester production provided by this utility model has the following beneficial effects: To improve the filtration effect and reduce the likelihood of clogging in the deacidification process of synthetic esters, a conical interceptor component 23 is installed inside both the first deacidification tank 8 and the second deacidification tank 15. The second cleaning frame 24, which is in contact with the conical interceptor component 23, can clean the impurities inside the conical interceptor component 23, allowing the impurities to enter the drain pipe 233 for easy cleaning by the staff. This design, using the conical interceptor component 232, can reduce the probability of clogging by utilizing the gravity of the impurities and the second cleaning frame 24, while also facilitating subsequent cleaning by the staff.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A deacidification apparatus for synthetic ester production, characterized in that, include: Install the base frame; The mounting frame is fixedly connected to the top of the mounting base. A first deacidification tank is mounted on the front of the mounting frame near the top via a heating mounting bracket. A second spraying assembly is mounted on the top of the first deacidification tank. An inlet pipe is mounted on the top of the second spraying assembly. A first valve is mounted on the bottom of the first deacidification tank. Two vacuum devices are mounted on one side of the mounting frame. Vacuum heads are mounted on the inlets of the vacuum devices via vacuum pipes. The second deacidification tank is mounted on the front of the mounting frame near the bottom via a heating fixing bracket. A first spraying assembly is mounted on the top of the second deacidification tank, and a liquid storage frame is mounted on the top of the first spraying assembly. A discharge pipe is mounted on the bottom of the second deacidification tank. An injection pipe is mounted on the top of both the second and first deacidification tanks. A filter plate is installed inside both the second and first deacidification tanks. A first cleaning frame is mounted inside both the second and first deacidification tanks via a drive assembly.

2. The deacidification apparatus for synthetic ester production according to claim 1, characterized in that, A control box with a door is mounted on the top of the mounting base, and an operation panel is mounted on one side of the control box.

3. The deacidification apparatus for synthetic ester production according to claim 1, characterized in that, The mounting base includes a base plate, a mounting structure, and an adjustment structure. The mounting structure is used to mount the adjustment structure to the bottom of the base plate.

4. The deacidification apparatus for synthetic ester production according to claim 1, characterized in that, Both the second deacidification tank and the first deacidification tank are equipped with monitoring components on their tops. The monitoring components include a fixed base and monitoring parts. The fixed base is used to fix the monitoring parts to the top of the deacidification tank.

5. The deacidification apparatus for synthetic ester production according to claim 1, characterized in that, The drive assembly includes a bracket and a drive structure, the bracket being used to install the drive structure inside the deacidification tank.

6. The deacidification apparatus for synthetic ester production according to claim 1, characterized in that, The first spraying assembly includes a second valve, a connecting pipe, a diversion ring, and multiple spray heads. The connecting pipe penetrates the top of the deacidification tank to install the diversion ring on the top of the inner wall of the deacidification tank. The multiple spray heads are installed at the bottom of the diversion ring. The second valve is installed before the connecting pipe and the liquid storage frame.

7. The deacidification apparatus for synthetic ester production according to claim 1, characterized in that, A second cleaning rack is installed at the bottom of both drive components, and a conical interception assembly is installed inside both the second deacidification tank and the first deacidification tank.

8. The deacidification apparatus for synthetic ester production according to claim 7, characterized in that, The conical interception assembly includes a fixing ring, a conical interception component, a drain pipe, and a drain valve. The fixing ring is used to install the conical interception component inside the deacidification tank. The drain pipe passes through the deacidification tank and is installed at the bottom end of the conical interception component. The drain valve is installed at the other end of the drain pipe.

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