Membrane separation enhanced esterification apparatus

Abstract

The utility model relates to the field of membrane separation reinforced esterification reaction technology discloses a kind of membrane separation reinforced esterification reaction equipment, including separation tank and heat insulation tank, the right side of the separation tank is provided with circulating mechanism, the circulating mechanism is used to recycle after separation solution, the inside of the separation tank is provided with membrane separation mechanism, the membrane separation mechanism is used to separate water produced in esterification reaction, the inside of the heat insulation tank is provided with stirring mechanism, the inside of the heat insulation tank is provided with heating mechanism, the front and rear sides of the heat insulation tank are provided with feeding mechanism, the circulating mechanism includes mixed solution pipe, the right side of the mixed solution pipe is connected in the left side bottom of heat insulation tank. In the utility model, realize mixed solution stable delivery to separation tank and the recycling of solution after separation, break reaction balance, improve raw material utilization rate, avoid pressure fluctuation influence equipment operation simultaneously, guarantee esterification reaction efficient orderly.

Description

Technical Field

[0001] This utility model relates to the field of membrane separation enhanced esterification reaction technology, and in particular to a membrane separation enhanced esterification reaction device. Background Technology

[0002] Membrane separation enhanced esterification reaction equipment is a new type of chemical equipment that integrates the esterification reaction process with membrane separation technology. It breaks the equilibrium limitation of the esterification reaction through the selective separation function of the membrane, thereby improving the reaction conversion rate, product purity and production efficiency. It uses membrane separation technology to remove the target product in the esterification reaction in real time, and promotes the reversible reaction towards the formation of ester.

[0003] The existing membrane separation enhanced esterification reaction device is a continuous process of raw material feeding, reaction to produce ester and water, real-time membrane separation of water, reaction of reactants, and product collection. The raw materials enter the esterification reaction unit according to the stoichiometric ratio. The reactor is heated to the set temperature through the jacket. The agitator is turned on to ensure uniform mixing of materials. After separation by the separator, water is collected as a by-product, and a small amount of alcohol can be recovered and reused. After a single reaction is completed, feeding and discharging continue to maintain continuous operation.

[0004] However, since the esterification reaction requires a higher temperature to accelerate the reaction rate, the mixed solution vaporizes. The vaporization of the solution and the liquefaction of water vapor change the gas pressure during membrane separation, causing pressure fluctuations in the separator and affecting the efficiency of membrane separation. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a membrane separation enhanced esterification reaction device, which aims to improve the problem of pressure fluctuation in the separator caused by changes in the gas pressure during membrane separation due to the vaporization of the solution and the liquefaction of water vapor in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a membrane separation enhanced esterification reaction device, comprising a separation tank and a heat insulation tank, wherein a circulation mechanism is provided on the right side of the separation tank for recycling the separated solution, a membrane separation mechanism is provided inside the separation tank for separating water generated during the esterification reaction, a stirring mechanism is provided inside the heat insulation tank, a heating mechanism is provided on the inner side of the heat insulation tank, and feeding mechanisms are provided on both the front and rear sides of the heat insulation tank; The circulation mechanism includes a mixing solution pipe, the right side of which is connected to the bottom left side of the heat insulation tank, the left side of which is connected to a water pump, the top of which is connected to a connecting pipe, the left side of which is connected to a pressure control valve, the bottom of which is fixedly connected to a base plate, and the right middle of the separation tank is connected to a return pipe.

[0007] As a further description of the above technical solution: The membrane separation mechanism includes a separation cover plate, the bottom of which is slidably connected to the top of the separation tank. A membrane screen is fixedly connected to the middle of the inner side of the separation tank, and a separation membrane is provided on the top of the membrane screen. A water outlet pipe is connected to the bottom left side of the separation tank, and a valve is fixedly connected to the outer wall of the water outlet pipe. A limit component is provided at the bottom of the separation cover plate.

[0008] As a further description of the above technical solution: The stirring mechanism includes a stirring cover plate, the bottom of which is slidably connected to the top of the heat-insulating tank. A motor is fixedly connected to the top of the stirring cover plate, the output end of which passes through the top of the stirring cover plate and is fixedly connected to a stirring paddle. Multiple fixing plates are fixedly connected to the bottom of the stirring cover plate. A feeding assembly is provided on the top right side of the stirring cover plate, and a switch assembly is provided on the right side of the stirring cover plate.

[0009] As a further description of the above technical solution: The heating mechanism includes a heating inner tank, the top of the outer wall of the heating inner tank is fixedly connected to the top of the inner wall of the heat insulation tank, a plurality of heating outer plates are fixedly connected to the middle of the outer wall of the heating inner tank, and heating tubes are fixedly connected inside the plurality of heating outer plates. A discharge pipe is connected to the bottom right side of the heating inner tank, the outer wall of the discharge pipe penetrates the bottom right side of the heat insulation tank, and a valve is fixedly connected to the outer wall of the discharge pipe.

[0010] As a further description of the above technical solution: The feeding mechanism includes two inlet pipes. The bottoms of the two inlet pipes are connected to the front and rear sides of the top of the stirring cover plate, respectively. The bottoms of the two inlet pipes are connected to water pumps on opposite sides. The opposite sides of the two water pumps are connected to medicine tanks. The tops of the two medicine tanks are provided with cover plate grooves. Medicine cover plates are slidably connected inside the two cover plate grooves.

[0011] As a further description of the above technical solution: The limiting assembly includes multiple limiting plates, the tops of which are fixedly connected to the bottom outer wall of the separation cover plate. The top outer wall of the separation tank is provided with multiple limiting grooves, and the outer walls of the multiple limiting plates are slidably connected to the inside of the multiple limiting grooves.

[0012] As a further description of the above technical solution: The feeding assembly includes a hinge, the bottom left side of which is fixedly connected to the top right side of the stirring cover plate. The bottom right side of the hinge is fixedly connected to the feeding cover plate, and the top right side of the feeding cover plate is fixedly connected to a handle. The top right side of the stirring cover plate has a feeding groove, and the outer wall of the feeding cover plate is slidably connected to the inside of the feeding groove.

[0013] As a further description of the above technical solution: The switch assembly includes multiple snap-fits, which are fixedly connected to the outer wall of the stirring cover plate. Multiple ring clips are fixedly connected to the top outer wall of the heat insulation tank.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the mixed solution in the heat-insulating tank is exported through the mixed solution pipe, and the water pump provides power for solution transportation. The solution enters the pressure control valve through the connecting pipe. The pressure control valve adjusts the transportation pressure. The base plate fixes and supports the pressure control valve. The separated solution flows back to the heat-insulating tank through the return pipe, realizing the stable transportation of the mixed solution to the separation tank and the recycling of the separated solution. This breaks the reaction equilibrium, improves the utilization rate of raw materials, and avoids pressure fluctuations from affecting equipment operation, ensuring that the esterification reaction proceeds efficiently and orderly.

[0015] 2. In this utility model, the sliding separation cover moves on the top of the separation tank, the membrane mesh carries the separation membrane, the limiting component fixes the separation cover, after the mixed solution comes into contact with the separation membrane, water permeates through the membrane to the left side of the separation tank, valve one is opened, and water is discharged through the outlet pipe, realizing the efficient separation and controllable discharge of water produced by the esterification reaction, breaking the reaction equilibrium, promoting the reaction in the direction of ester formation, ensuring the stability of the separation process, and improving the efficiency of ester product formation. Attached Figure Description

[0016] Figure 1 This is a perspective view of a membrane separation enhanced esterification reaction device proposed in this utility model; Figure 2 This is a split view of the circulation mechanism in a membrane separation enhanced esterification reaction device proposed in this utility model; Figure 3 This is an exploded view of the membrane separation mechanism in a membrane separation-enhanced esterification reaction device proposed in this utility model; Figure 4 This is a split view of the stirring mechanism in a membrane separation enhanced esterification reaction device proposed in this utility model; Figure 5 This is an exploded view of the heating mechanism in a membrane separation enhanced esterification reaction device proposed in this utility model; Figure 6 This is an exploded view of the feeding mechanism in a membrane separation enhanced esterification reaction device proposed in this utility model.

[0017] Legend: 1. Separation tank; 2. Insulated tank; 3. Circulation mechanism; 31. Mixed solution pipe; 32. Water pump one; 33. Connecting pipe; 34. Pressure control valve; 35. Base plate; 36. Return pipe; 4. Membrane separation mechanism; 41. Separation cover plate; 42. Membrane screen; 43. Separation membrane; 44. Water outlet pipe; 45. Valve one; 46. Limiting component; 461. Limiting plate; 462. Limiting groove; 5. Stirring mechanism; 51. Stirring cover plate; 52. Motor; 53. Agitator 54. Stirring plate; 55. Feeding assembly; 551. Hinge; 552. Feeding cover plate; 553. Handle; 554. Feeding trough; 56. Switch assembly; 561. Buckle; 562. Ring clamp; 6. Heating mechanism; 61. Inner heating tank; 62. Outer heating plate; 63. Heating tube; 64. Discharge pipe; 65. Valve II; 7. Feeding mechanism; 71. Medicine inlet pipe; 72. Water pump II; 73. Medicine tank; 74. Cover plate groove; 75. Medicine cover plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0019] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a membrane separation enhanced esterification reaction device, including a separation tank 1 and a heat insulation tank 2. A circulation mechanism 3 is provided on the right side of the separation tank 1, which is used to recycle the separated solution. A membrane separation mechanism 4 is provided inside the separation tank 1, which is used to separate the water generated in the esterification reaction. A stirring mechanism 5 is provided inside the heat insulation tank 2, a heating mechanism 6 is provided on the inner side of the heat insulation tank 2, and a feeding mechanism 7 is provided on both the front and rear sides of the heat insulation tank 2. The circulation mechanism 3 includes a mixing solution pipe 31. The right side of the mixing solution pipe 31 is connected to the bottom left side of the heat insulation tank 2. The left side of the mixing solution pipe 31 is connected to a water pump 32. The top of the water pump 32 is connected to a connecting pipe 33. The left side of the connecting pipe 33 is connected to a pressure control valve 34. The bottom of the pressure control valve 34 is fixedly connected to a base plate 35. The middle right side of the separation tank 1 is connected to a return pipe 36. Specifically, during equipment operation, the raw materials required for the esterification reaction are first fed into the insulated tank 2 via the feeding mechanism 7. After the raw materials enter the insulated tank 2, the heating mechanism 6 is activated to heat the inside of the insulated tank 2, bringing it to the temperature required for the esterification reaction. Simultaneously, the stirring mechanism 5 starts operating to stir the raw materials in the insulated tank 2. Through the cooperation of the stirring mechanism 5 and the heating mechanism 6, the raw materials are fully mixed and heated, providing a suitable environment for the esterification reaction to occur. This promotes the esterification reaction within the insulated tank 2. During the esterification reaction, water and other reaction products are produced. The resulting mixed solution enters the separation tank 1 through the circulation mechanism 3. The mixed solution is then transported to the water pump 32 via the mixed solution pipe 31 in the circulation mechanism 3. The water pump 32 provides the power for the transport of the solution. The liquid enters the pressure control valve 34 through the connecting pipe 33. The pressure control valve 34 regulates the delivery pressure of the solution. The base plate 35 provides fixed support for the pressure control valve 34. Through the cooperation of the mixed solution pipe 31, water pump 32, connecting pipe 33 and pressure control valve 34, the mixed solution is stably introduced into the separation tank 1. After the mixed solution enters the separation tank 1, the membrane separation mechanism 4 is activated to separate the water in the solution. Through the action of the membrane separation mechanism 4, the water produced by the esterification reaction is separated from the mixed solution to break the equilibrium of the esterification reaction and promote the reaction towards the formation of ester. The separated solution is returned to the heat-insulating tank 2 through the return pipe 36 in the circulation mechanism 3 to participate in the esterification reaction again. The return pipe 36 realizes the recycling of the separated solution and improves the utilization rate of raw materials.

[0020] Reference Figure 1 and Figure 3 The membrane separation mechanism 4 includes a separation cover plate 41, the bottom of which is slidably connected to the top of the separation tank 1. A membrane screen 42 is fixedly connected to the middle of the inner side of the separation tank 1. A separation membrane 43 is provided on the top of the membrane screen 42. A water outlet pipe 44 is connected to the bottom left side of the separation tank 1. A valve 45 is fixedly connected to the outer wall of the water outlet pipe 44. A limit component 46 is provided at the bottom of the separation cover plate 41. Specifically, after the mixed solution enters the separation tank 1, the membrane separation mechanism 4 begins operation. Before the membrane separation operation, the separation cover plate 41 can be opened to separate the bottom of the separation cover plate 41 from the top of the separation tank 1, and the separation membrane 43 is placed on top of the membrane placement net 42. The membrane placement net 42 supports the separation membrane 43. Subsequently, the separation cover plate 41 is fixed by the limiting component 46. Through the action of the separation cover plate 41 and the limiting component 46, the separation membrane 43 is ensured to be in a stable state during the separation process, and the mixed solution and the membrane separation mechanism 43 are separated. After contact with membrane 43, the water produced by the esterification reaction moves to the bottom left side of the separation tank 1 through the separation membrane 43 under the action of the separation membrane 43. The solution that does not pass through remains above the separation membrane 43. When it is necessary to discharge the separated water, the valve 45 on the outer wall of the water outlet pipe 44 is opened, and the water is discharged from the separation tank 1 through the water outlet pipe 44. Through the cooperation of the water outlet pipe 44 and the valve 45, the separated water can be discharged in a controlled manner. The separated solution flows back to the heat insulation tank 2 through the return pipe 36 in the circulation mechanism 3 and participates in the esterification reaction again.

[0021] Reference Figure 4 , Figure 5 and Figure 6 The stirring mechanism 5 includes a stirring cover plate 51, the bottom of which is slidably connected to the top of the heat-insulating tank 2. A motor 52 is fixedly connected to the top of the stirring cover plate 51, the output end of which passes through the top of the stirring cover plate 51. A stirring paddle 53 is fixedly connected to the output end of the motor 52. Multiple fixing plates 54 are fixedly connected to the bottom of the stirring cover plate 51. A feeding assembly 55 is provided on the right side of the top of the stirring cover plate 51, and a switch assembly 56 is provided on the right side of the stirring cover plate 51. The heating mechanism 6 includes a heating inner tank 61, the top of which is fixedly connected to the top of the inner wall of the heat-insulating tank 2. Multiple heating outer plates 62 are fixedly connected to the middle of the outer wall of the heating inner tank 61. Heating pipes 63 are fixedly connected to the interior of multiple heating outer plates 62. A discharge pipe 64 is connected to the bottom right side of the heating inner tank 61. The outer wall of the discharge pipe 64 penetrates the bottom right side of the heat insulation tank 2. A valve 65 is fixedly connected to the outer wall of the discharge pipe 64. The feeding mechanism 7 includes two medicine inlet pipes 71. The bottoms of the two medicine inlet pipes 71 are respectively connected to the front and rear sides of the top of the stirring cover plate 51. A water pump 72 is connected to the side of the bottom of the two medicine inlet pipes 71 that is far apart. A medicine tank 73 is connected to the side of the two water pumps 72 that is far apart. A cover plate groove 74 is opened on the top of the two medicine tanks 73. A medicine cover plate 75 is slidably connected inside the two cover plate grooves 74. Specifically, during feeding, the sliding agent cover plate 75 moves within the cover plate groove 74 at the top of the agent tank 73. After the raw material is added to the agent tank 73, the agent cover plate 75 is reset, and the second water pump 72 is started. The raw material is transported to the top of the stirring cover plate 51 through the inlet pipe 71. Through the cooperation of the inlet pipe 71, the second water pump 72, and the agent tank 73, the raw material is transported. The sliding stirring cover plate 51 moves its bottom at the top of the heat insulation tank 2. The fixing plate 54 enhances the stability of the stirring cover plate 51. The motor 52 is started, and the output end of the motor 52 drives the stirring paddle 53 to rotate. Through the motor 52 and the stirring paddle 53, the raw material is transported to the top of the stirring cover plate 51. The mixing paddle 53 is used to stir and mix the raw materials. The feeding component 55 can add a catalyst to improve the reaction rate of the esterification reaction. During heating, the heating tube 63 works, and the heat is transferred to the inner heating tank 61 through the outer heating plate 62. The stirring cover 51 can be opened through the switch component 56. After the operation is completed, the inside is cleaned. The combination of the inner heating tank 61, the outer heating plate 62, and the heating tube 63 provides a suitable temperature for the reaction. After the reaction is completed, the valve 65 is opened, and the product is discharged through the discharge pipe 64. The product is collected through the combination of the discharge pipe 64 and the valve 65.

[0022] Reference Figure 2 , Figure 3 and Figure 4 The limiting component 46 includes multiple limiting plates 461, the tops of which are fixedly connected to the bottom outer wall of the separation cover plate 41. The top outer wall of the separation tank 1 is provided with multiple limiting grooves 462, and the outer walls of the multiple limiting plates 461 are slidably connected to the inside of the multiple limiting grooves 462. The feeding component 55 includes a hinge 551, the bottom left side of which is fixedly connected to the top right side of the stirring cover plate 51. The bottom right side of the hinge 551 is fixedly connected to a feeding cover plate 552, and the top right side of the feeding cover plate 552 is fixedly connected to a handle 553. The top right side of the stirring cover plate 51 is provided with a feeding groove 554, and the outer wall of the feeding cover plate 552 is slidably connected to the inside of the feeding groove 554. The switch component 56 includes multiple buckles 561, and the adjacent buckles 561 are fixedly connected to the outer wall of the stirring cover plate 51. The top outer wall of the heat insulation tank 2 is fixedly connected with multiple ring clips 562. Specifically, when the membrane separation mechanism 4 is operating, when adjusting the position of the separation cover plate 41, multiple limiting plates 461 move along with the bottom of the separation cover plate 41 at the top of the separation tank 1. The outer wall of the limiting plate 461 slides into the corresponding limiting groove 462. Through the cooperation of the limiting plate 461 and the limiting groove 462, the separation cover plate 41 is accurately positioned and stably fixed, ensuring the stability of the membrane separation process. When the stirring mechanism 5 is operating, the stirring cover plate 51 needs to be fixed by engaging multiple buckles 561 with the corresponding ring clamps 562. Through the cooperation of the buckles 561 and the ring clamps 562, the stirring mechanism 51 is stirred. The cover plate 51 is securely connected to the top of the heat insulation tank 2. When adding catalyst, hold the handle 553 and rotate the feeding cover plate 552 through the hinge 551 so that the outer wall of the feeding cover plate 552 slides out from the feeding trough 554. After adding catalyst into the heat insulation tank 2, rotate the feeding cover plate 552 in the opposite direction to reset it. The limiting component 46 ensures the stable operation of the membrane separation mechanism 4, the feeding component 55 facilitates the addition of catalyst, and the switching component 56 ensures the stability of the stirring mechanism 5. Together, they improve the overall efficiency and reliability of the equipment operation and ensure the esterification reaction and separation process.

[0023] Working Principle: During operation, the raw materials required for the esterification reaction are first fed into the insulated tank 2 via the feeding mechanism 7. During feeding, the reagent cover plate 75 is slid to move on the cover groove 74 at the top of the reagent tank 73, opening the reagent tank 73. After the raw materials are added to the reagent tank 73, the reagent cover plate 75 is slid back to its original position, closing the reagent tank 73 to prevent impurities from entering. Then, the second water pump 72 is started, and the raw materials are transported to the top of the stirring cover plate 51 through the inlet pipe 71 under the power of the second water pump 72. The raw materials then enter the insulated tank 2 through the feed inlet of the stirring cover plate 51. Through the cooperation of the inlet pipe 71, the second water pump 72, the reagent tank 73, the cover groove 74, and the reagent cover plate 75, the clean and quantitative delivery of the raw materials is achieved. After the raw materials enter the insulated tank 2, the heating mechanism 6 is started, and the heating pipe 63 is opened. When the heating mechanism starts working, the heat generated is evenly transferred to the inner heating tank 61 through the outer heating plate 62, so that the internal temperature of the inner heating tank 61 gradually rises to the conditions required for the esterification reaction. At the same time, the stirring mechanism 5 starts to operate. The stirring cover plate 51 is fixed to the top of the heat insulation tank 2 by the switch assembly 56, and multiple buckles 561 are engaged with the corresponding rings 562, so that the bottom of the stirring cover plate 51 is stably attached to the top of the heat insulation tank 2. The fixing plate 54 further enhances the stability of the stirring cover plate 51. At this time, the motor 52 starts, and the output end of the motor 52 passes through the stirring cover plate 51 and drives the stirring paddle 53 to rotate, stirring the raw materials in the heat insulation tank 2. Through the cooperation of the stirring mechanism 5 and the heating mechanism 6, the raw materials are fully mixed and uniformly heated, providing a suitable temperature and mixing environment for the esterification reaction to occur, and promoting the esterification reaction of the raw materials in the heat insulation tank 2. During the esterification reaction, water and esters are produced. The resulting mixed solution enters the separation tank 1 through the circulation mechanism 3. The mixed solution is then transported to the water pump 32 via the mixed solution pipe 31 in the circulation mechanism 3. The water pump 32 provides power for the transport of the solution. Under pressure, the solution enters the pressure control valve 34 through the connecting pipe 33. The pressure control valve 34 precisely regulates the transport pressure of the solution to avoid damage to the membrane separation mechanism 4 due to excessive pressure or reduced transport efficiency due to insufficient pressure. The base plate 35 provides fixed support for the pressure control valve 34, ensuring its stable operation. Through the cooperation of the mixed solution pipe 31, the water pump 32, the connecting pipe 33, and the pressure control valve 34, the mixed solution stably enters the separation tank 1. After the mixed solution enters the separation tank 1, the membrane separation mechanism 4 starts to separate the water in the solution. Before the membrane separation operation, the position of the separation cover plate 41 is adjusted. The separation cover plate 41 is slid to separate the bottom of the separation cover plate 41 from the top of the separation tank 1. The separation membrane 43 is then placed on top of the membrane placement screen 42. The mesh 42 supports the separation membrane 43, preventing deformation due to solution pressure. Then, the separation cover 41 is reset, causing multiple limiting plates 461 to move along with the bottom of the separation cover 41 at the top of the separation tank 1. The outer walls of the limiting plates 461 slide into the corresponding limiting grooves 462. Through the cooperation of the limiting plates 461 and the limiting grooves 462, the separation cover 41 is precisely positioned and stably fixed, ensuring the separation membrane 43 remains stable during separation. After the mixed solution comes into contact with the separation membrane 43, the separation membrane 43... Under the selective permeation of 3, the water produced by the esterification reaction moves to the bottom left side of the separation tank 1 through the separation membrane 43. The ester products that do not permeate and the unreacted raw materials remain above the separation membrane 43. When the water volume at the bottom left side of the separation tank 1 reaches a certain level, the valve 45 on the outer wall of the water outlet pipe 44 is opened, and the water is discharged from the separation tank 1 through the water outlet pipe 44. Through the cooperation of the water outlet pipe 44 and the valve 45, the separated water can be discharged in a controlled manner, thereby breaking the equilibrium of the esterification reaction and promoting the reaction to proceed in the direction of ester formation. The separated solution is returned to the insulated tank 2 through the reflux pipe 36 in the circulation mechanism 3, and participates in the esterification reaction again. The reflux pipe 36 enables the recycling of the separated solution, improving the utilization rate of raw materials. During the reaction, if it is necessary to replenish raw materials or add catalyst, it can be operated through the feeding component 55. Hold the handle 553 and rotate the feeding cover 552 through the hinge 551, so that the outer wall of the feeding cover 552 slides out from the feeding trough 554 to add raw materials and catalyst into the insulated tank 2. After that, rotate the feeding cover 552 in the opposite direction to reset it. Through the cooperation of the hinge 551, the feeding cover 552, the handle 553 and the feeding trough 554, the replenishment of raw materials or catalyst can be conveniently achieved, while avoiding external interference. When impurities enter, and the esterification reaction proceeds to the preset level and the reaction product reaches the required purity, valve 65 is opened, and the product is discharged from the equipment through discharge pipe 64. The product is collected through the cooperation of discharge pipe 64 and valve 65. After the equipment stops, the stirring cover 51 can be opened through switch assembly 56 to release the engagement of buckle 561 and ring clamp 562. The bottom of stirring cover 51 is separated from the top of heat insulation tank 2 by sliding stirring cover 51, which facilitates cleaning of the inside of heat insulation tank 2. Similarly, separation cover 41 can be opened to maintain or replace separation tank 1 and separation membrane 43. All mechanisms cooperate with each other to improve the overall efficiency and reliability of the equipment operation and ensure that the esterification reaction and separation process proceed in an orderly manner.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A membrane separation enhanced esterification reaction apparatus, comprising a separation tank (1) and an insulated tank (2), characterized in that: A circulation mechanism (3) is provided on the right side of the separation tank (1), which is used to recycle the separated solution. A membrane separation mechanism (4) is provided inside the separation tank (1), which is used to separate the water produced in the esterification reaction. A stirring mechanism (5) is provided inside the heat insulation tank (2), and a heating mechanism (6) is provided on the inner side of the heat insulation tank (2). Feeding mechanisms (7) are provided on both the front and rear sides of the heat insulation tank (2). The circulation mechanism (3) includes a mixing solution pipe (31), the right side of which is connected to the bottom left side of the heat insulation tank (2), the left side of which is connected to a water pump (32), the top of which is connected to a connecting pipe (33), the left side of which is connected to a pressure control valve (34), the bottom of which is fixedly connected to a base plate (35), and the middle right side of the separation tank (1) is connected to a return pipe (36).

2. The membrane separation enhanced esterification reaction apparatus according to claim 1, characterized in that: The membrane separation mechanism (4) includes a separation cover plate (41), the bottom of which is slidably connected to the top of the separation tank (1). A membrane mesh (42) is fixedly connected to the middle of the inner side of the separation tank (1). A separation membrane (43) is provided on the top of the membrane mesh (42). A water outlet pipe (44) is connected to the bottom left side of the separation tank (1). A valve (45) is fixedly connected to the outer wall of the water outlet pipe (44). A limit component (46) is provided at the bottom of the separation cover plate (41).

3. The membrane separation enhanced esterification reaction apparatus according to claim 1, characterized in that: The stirring mechanism (5) includes a stirring cover plate (51), the bottom of which is slidably connected to the top of the heat insulation tank (2). A motor (52) is fixedly connected to the top of the stirring cover plate (51), the output end of which passes through the top of the stirring cover plate (51). A stirring paddle (53) is fixedly connected to the output end of the motor (52). Multiple fixing plates (54) are fixedly connected to the bottom of the stirring cover plate (51). A feeding component (55) is provided on the top right side of the stirring cover plate (51), and a switch component (56) is provided on the right side of the stirring cover plate (51).

4. The membrane separation enhanced esterification reaction apparatus according to claim 1, characterized in that: The heating mechanism (6) includes a heating inner tank (61), the top of the outer wall of the heating inner tank (61) is fixedly connected to the top of the inner wall of the heat insulation tank (2), a plurality of heating outer plates (62) are fixedly connected to the middle of the outer wall of the heating inner tank (61), and heating pipes (63) are fixedly connected inside the plurality of heating outer plates (62). A discharge pipe (64) is connected to the bottom right side of the heating inner tank (61), the outer wall of the discharge pipe (64) penetrates the bottom right side of the heat insulation tank (2), and a valve (65) is fixedly connected to the outer wall of the discharge pipe (64).

5. The membrane separation enhanced esterification reaction apparatus according to claim 3, characterized in that: The feeding mechanism (7) includes two feeding pipes (71). The bottoms of the two feeding pipes (71) are connected to the front and rear sides of the top of the stirring cover plate (51), respectively. The bottoms of the two feeding pipes (71) are connected to water pumps (72) on opposite sides. The two water pumps (72) are connected to medicine tanks (73) on opposite sides. The tops of the two medicine tanks (73) are provided with cover plate grooves (74). Medicine cover plates (75) are slidably connected inside the two cover plate grooves (74).

6. The membrane separation enhanced esterification reaction apparatus according to claim 2, characterized in that: The limiting component (46) includes multiple limiting plates (461), the tops of the multiple limiting plates (461) are respectively fixedly connected to the bottom outer wall of the separation cover (41), and the top outer wall of the separation tank (1) is provided with multiple limiting grooves (462), and the outer walls of the multiple limiting plates (461) are respectively slidably connected to the inside of the multiple limiting grooves (462).

7. The membrane separation enhanced esterification reaction apparatus according to claim 3, characterized in that: The feeding assembly (55) includes a hinge (551), the bottom left side of the hinge (551) is fixedly connected to the top right side of the stirring cover plate (51), the bottom right side of the hinge (551) is fixedly connected to a feeding cover plate (552), the top right side of the feeding cover plate (552) is fixedly connected to a handle (553), the top right side of the stirring cover plate (51) is provided with a feeding groove (554), and the outer wall of the feeding cover plate (552) is slidably connected to the inside of the feeding groove (554).

8. The membrane separation enhanced esterification reaction apparatus according to claim 3, characterized in that: The switch assembly (56) includes multiple snaps (561), and each of the multiple snaps (561) is fixedly connected to the outer wall of the stirring cover plate (51) and multiple ring clips (562) are fixedly connected to the top outer wall of the heat insulation tank (2).

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