Crystallization feeding and discharging device and reaction kettle
The automated control of the crystallization feeding and discharging device has solved the problem of inaccurate control of feeding rate and cooling crystallization endpoint in chemical production, realizing automated feeding, discharging and cooling of the reactor, and improving the accuracy and safety of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-03-17
AI Technical Summary
In existing chemical production processes, the control of feed rate and cooling crystallization endpoint is inaccurate, material transfer is not fast enough, the degree of automation is low, remote central control safety interlock control cannot be achieved, and on-site human operation errors are large.
The crystallization feeding and discharging device includes a temperature transmitter, a coil structure, a liquid inlet pipe, a liquid return pipe, a feed pipe, a discharge pipe, a purging pipe, and a control system. The control system controls the opening and closing of valves and pumps to achieve automated feeding, discharging, and cooling operations of the reactor.
It improves the accuracy of feeding, discharging and cooling operations, realizes automated control of the reactor, reduces human error, and ensures safety interlock control.
Smart Images
Figure CN223995442U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical production technology, and more specifically, it relates to a crystallization feeding and discharging device and a reaction vessel. Background Technology
[0002] In the pharmaceutical manufacturing process, automatic material feeding, crystallization, and transfer to the next reaction stage are essential operations. Existing equipment relies on manual valve control for feeding, cooling, and material transfer. However, manual control of material transfer cannot accurately control the feed rate, the cooling and crystallization endpoint, or achieve rapid material transfer, thus failing to achieve fully automated process control. Furthermore, the level of automation is low, remote central control and safety interlocks are not available, and on-site human error is significant. Utility Model Content
[0003] The purpose of this invention is to provide a crystallization feeding and discharging device and a reaction vessel to solve the technical problems of poor accuracy in cooling crystallization and feeding and discharging during the chemical production process in the prior art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A crystallization feeding and discharging device is provided, comprising a temperature transmitter, a coil structure, a liquid inlet pipe, a liquid return pipe, a feed pipe, a discharge pipe, a pre-purge pipe, a post-purge pipe, multiple valves, and a control system; the temperature transmitter is installed on the reactor and is used to monitor the temperature inside the reactor; the coil structure is wound around the reactor, and the coil structure has an inlet and an outlet; one end of the liquid inlet pipe is connected to the coil structure and communicates with the inlet, for adding a low-temperature medium into the coil structure; one end of the liquid return pipe is connected to the coil structure and communicates with the outlet, for refluxing and discharging the low-temperature medium from the coil structure. A warm medium is provided; one end of the feed pipe is connected to the upper end of the reactor for adding materials into the reactor; one end of the discharge pipe is connected to the lower end of the reactor for discharging the crystallized material from the reactor; a pump is installed on the discharge pipe; one end of the front purging pipe is connected to the discharge pipe, and the front purging pipe is located between the pump and the reactor; one end of the rear purging pipe is connected to the discharge pipe, and the rear purging pipe is located on the side of the pump away from the reactor; multiple valves are respectively installed on the inlet pipe, the return pipe, the feed pipe, the discharge pipe, the front purging pipe, and the rear purging pipe; all multiple valves are electrically connected to the control system.
[0005] In one possible implementation, the crystallization feeding and discharging device further includes a first connecting pipe and a second connecting pipe, both located outside the reactor; the first connecting pipe is connected to the inlet of the coil structure, and the liquid inlet pipe is connected to the first connecting pipe; the second connecting pipe is connected to the outlet of the coil structure, and the liquid return pipe is connected to the second connecting pipe.
[0006] In one possible implementation, the coil structure includes a plurality of spiral tubes arranged sequentially along the height of the reactor, each spiral tube having an inlet and an outlet; a plurality of first branch tubes are provided on the first connecting tube, and a plurality of second branch tubes are provided on the second connecting tube, the number of the first branch tubes and the number of the second branch tubes being the same as the number of the plurality of spiral tubes; the plurality of first branch tubes are respectively connected to the inlets of the plurality of spiral tubes, and the plurality of second branch tubes are respectively connected to the outlets of the plurality of spiral tubes.
[0007] In one possible implementation, the inlet and the outlet are located at the lower and upper ends of the coil structure, respectively.
[0008] In one possible implementation, the feed pipe is equipped with a first flow meter for monitoring the amount of material fed into the reactor, and the first flow meter is electrically connected to the control system.
[0009] In one possible implementation, the feed pipe is provided with two valves, and the first flow meter is located between the two valves.
[0010] In one possible implementation, the crystallization feed and discharge device is further provided with a process water inlet pipe, the process water inlet pipe is provided with a second flow meter and a valve, and the second flow meter is electrically connected to the control system.
[0011] In one possible implementation, the crystallization feed / discharge device further includes a breather valve for installation on top of the reactor.
[0012] In one possible implementation, a level switch is provided on the discharge pipe, and the level switch is electrically connected to the control system; the level switch is used to monitor the level of the crystallized material in the discharge pipe.
[0013] The beneficial effects of the crystallization feeding and discharging device provided by this utility model are as follows: Compared with the prior art, in use, the crystallization feeding and discharging device of this utility model controls the valve on the feeding pipe to open, allowing the material to smoothly enter the reactor. A temperature transmitter monitors the temperature inside the reactor and transmits the temperature signal to the control system, which then analyzes and processes the signal. When cooling of the reactor is required, the control system opens the valves on the inlet and return pipes, allowing the low-temperature medium to enter the coil structure through the inlet pipe. The low temperature is achieved by combining the heat generated by the reactor with the low temperature... Heat exchange occurs, lowering the temperature inside the reactor. The cryogenic medium then passes through the outlet and enters the return liquid pipe for discharge, thus completing the reactor's cooling process. Before the material in the reactor crystallizes and needs to be discharged, the control system opens the valves on the front and rear purge pipes. Cryogenic compressed air passes through the front purge pipe to clean the front section of the discharge pipe, and steam passes through the rear purge pipe to clean the rear section. The control system then opens the valves and pumps on the discharge pipe, allowing the crystallized material in the reactor to move through the discharge pipe and be discharged. In this way, by receiving temperature signals from the temperature transmitter and controlling the opening and closing of valves and pumps, the reactor's feeding, discharging, purging, and cooling operations are performed automatically and accurately, improving the precision of temperature control, crystallization feeding and discharging, and purging operations.
[0014] Another objective of this invention is to provide a reaction vessel comprising any one of the crystallization feeding and discharging devices described above.
[0015] This utility model provides a reaction vessel. By adopting a crystallization feeding and discharging device, the control system receives the temperature signal from the temperature transmitter and controls the opening or closing of valves and pumps, thereby enabling the feeding, discharging, purging and cooling operations of the reaction vessel to be carried out automatically and accurately, thus improving the accuracy of temperature control, crystallization feeding and discharging and purging operations. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the crystallization feeding and discharging device installed on a reactor according to an embodiment of the present invention.
[0018] The following are the labeling elements in the figure:
[0019] 10. Temperature transmitter; 11. Coil structure; 12. Inlet pipe; 13. Return pipe; 14. Feed pipe; 15. Discharge pipe; 16. Front purging pipe; 17. Rear purging pipe; 18. Valve; 19. Pump; 20. First connecting pipe; 21. Second connecting pipe; 22. First branch pipe; 23. Second branch pipe; 24. First flow meter; 25. Process water inlet pipe; 26. Second flow meter; 27. Breather valve; 28. Level switch; 29. Reactor. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] Please see Figure 1The crystallization feeding and discharging device provided by this utility model will now be described. A crystallization feeding and discharging device includes a temperature transmitter 10, a coil structure 11, a liquid inlet pipe 12, a liquid return pipe 13, a feed pipe 14, a discharge pipe 15, a front purging pipe 16, a rear purging pipe 17, multiple valves 18, and a control system. The temperature transmitter 10 is installed on a reactor 29 and is used to monitor the temperature inside the reactor 29. The coil structure 11 is wound around the reactor 29 and has an inlet and an outlet. One end of the liquid inlet pipe 12 is connected to the coil structure 11 and communicates with the inlet, for adding a low-temperature medium into the coil structure 11. One end of the liquid return pipe 13 is connected to the coil structure 11 and communicates with the outlet, for returning and discharging the low-temperature medium from the coil structure 11. The feed pipe... One end of pipe 14 is connected to the upper end of reactor 29 for adding materials into reactor 29; one end of discharge pipe 15 is connected to the lower end of reactor 29 for discharging crystalline materials from reactor 29; pump 19 is installed on discharge pipe 15; one end of front purging pipe 16 is connected to discharge pipe 15 and is located between pump 19 and reactor 29; one end of rear purging pipe 17 is connected to discharge pipe 15 and is located on the side of pump 19 away from reactor 29; multiple valves 18 are respectively installed on inlet pipe 12, return pipe 13, feed pipe 14, discharge pipe 15, front purging pipe 16, and rear purging pipe 17; all multiple valves 18 are electrically connected to the control system.
[0025] Compared with the prior art, the crystallization feeding and discharging device provided by this utility model, during use, is controlled by the control system to open the valve 18 on the feeding pipe 14, allowing the material to smoothly enter the reactor 29. The temperature transmitter 10 monitors the temperature inside the reactor 29 and transmits the temperature signal to the control system, which analyzes and processes the signal. When it is necessary to cool the reactor 29, the control system opens the valves 18 on the liquid inlet pipe 12 and the liquid return pipe 13, allowing the low-temperature medium to enter the coil structure 11 through the liquid inlet pipe 12. The low temperature medium exchanges heat with the heat generated in the reactor 29, thus cooling the material inside the reactor 29. As the temperature decreases, the cryogenic medium passes through the outlet and enters the return liquid pipe 13 for discharge, thus completing the cooling operation of the reactor 29. Before the material in the reactor 29 crystallizes and needs to be discharged, the control system opens the valves 18 on the front purge pipe 16 and the rear purge pipe 17. Cryogenic compressed air passes through the front purge pipe 16 to purge the front section of the discharge pipe 15, and steam passes through the rear purge pipe 17 to purge the rear section of the discharge pipe 15. The control system opens the valve 18 and the pump 19 on the discharge pipe 15, causing the crystallized material in the reactor 29 to move in the discharge pipe 15 and then be discharged through the discharge pipe 15. In this way, by receiving the temperature signal from the temperature transmitter 10 and controlling the opening or closing of the valves 18 and the pump 19, the feeding, discharging, purging, and cooling operations of the reactor 29 are carried out automatically and accurately, thereby improving the accuracy of temperature control, crystallization feeding and discharging, and purging operations.
[0026] Valve 18 is configured as a solenoid valve, ensuring accurate and stable connection to the control system. Pump 19 is a self-controlled transfer pump. The control system is configured as a distributed control system (DCS). DCS employs a decentralized control system (DCS) design, which utilizes a multi-level, hierarchical, cooperative, and autonomous structure, characterized by centralized management and decentralized control. The advantages of a DCS include high specificity and reliability, high information transmission efficiency, and strong system adaptability.
[0027] Please see Figure 1As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, the crystallization feeding and discharging device further includes a first connecting pipe 20 and a second connecting pipe 21, both of which are located outside the reaction vessel 29; the first connecting pipe 20 is connected to the inlet of the coil structure 11, and the liquid inlet pipe 12 is connected to the first connecting pipe 20; the second connecting pipe 21 is connected to the outlet of the coil structure 11, and the liquid return pipe 13 is connected to the second connecting pipe 21; the first connecting pipe 20 and the second connecting pipe 21 are set as the liquid inlet pipe 12, The transition pipe between the return pipe 13 and the coil structure 11 has a first connecting pipe 20, one end of which is connected to the inlet of the coil structure 11 and the other end of which is connected to the inlet pipe 12. The second connecting pipe 21 has one end connected to the outlet of the coil structure 11 and the other end of which is connected to the return pipe 13. This allows the low-temperature medium in the inlet pipe 12 to first enter the first connecting pipe 20 and then stably enter the coil structure 11. The first connecting pipe 20 and the second connecting pipe 21 ensure a secure connection between the inlet pipe 12, the return pipe 13 and the coil structure 11, and ensure stable flow of the low-temperature medium.
[0028] Please see Figure 1As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, the coil structure 11 includes multiple spiral tubes arranged sequentially along the height direction of the reactor 29, each spiral tube having an inlet and an outlet; the first connecting pipe 20 has multiple first branch pipes 22, and the second connecting pipe 21 has multiple second branch pipes 23, the number of first branch pipes 22 and second branch pipes 23 being the same as the number of spiral tubes; the multiple first branch pipes 22 are respectively connected to the inlets of the multiple spiral tubes, and the multiple second branch pipes 23 are respectively connected to the outlets of the multiple spiral tubes; multiple independently arranged spiral tubes are provided, and the spiral tubes are wound around the outer surface of the reactor 29, so that during the cooling process, the entire crystallization feeding and discharging device will not be unusable due to local failure, thus improving the reliability and stability of the entire crystallization feeding and discharging device. Specifically, each spiral tube has an inlet and an outlet, the first connecting pipe 20 is connected to multiple inlets, and the second connecting pipe 21 is connected to multiple outlets, thereby completing the connection and communication operation of multiple spiral tubes. Specifically, multiple first branch pipes 22 are formed on the first connecting pipe 20, and multiple second branch pipes 23 are formed on the second connecting pipe 21, with the number of first branch pipes 22 and second branch pipes 23 being the same as the number of spiral pipes. The multiple first branch pipes 22 are connected to the inlets of the multiple spiral pipes, and the multiple second branch pipes 23 are connected to the openings of the multiple spiral pipes, thereby achieving connection and communication between the first connecting pipe 20, the second connecting pipe 21, and the multiple spiral pipes. This method makes the connection between the first connecting pipe 20, the second connecting pipe 21, and the multiple spiral pipes more independent and stable in operation. The lower spiral pipe covers the bottom of the reactor 29, with the lower part of the lowest spiral pipe positioned on the bottom surface of the reactor 29, and the upper part of the spiral pipe wound around the lower outer surface of the reactor 29, thus achieving better all-around cooling of the reactor 29.
[0029] Please see Figure 1 As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, the inlet and outlet are located at the lower end and upper end of the coil structure 11, respectively; through this structure, the low-temperature medium used in the cooling operation is introduced at a low inlet and then exited at a high outlet, resulting in a higher cooling effect.
[0030] Please see Figure 1 As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, a first flow meter 24 for monitoring the material feed rate in the reactor 29 is provided on the feed pipe 14, and the first flow meter 24 is electrically connected to the control system; with the help of the first flow meter 24, the material feed rate entering the reactor 29 through the feed pipe 14 can be accurately controlled, thereby improving the working accuracy of the reactor 29; the first flow meter 24 transmits the flow signal to the control system, and the control system analyzes and processes the signal to determine whether to open, close or adjust the valve 18 on the feed pipe 14.
[0031] Please see Figure 1 As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, the feeding pipe 14 is provided with two valves 18, and the first flow meter 24 is located between the two valves 18; by arranging two valves 18 on the feeding pipe 14 and installing the first flow meter 24 between the two valves 18, the flow rate of the material can be accurately measured, and the material is in a stable state during measurement, reducing the interference of external factors on the measurement.
[0032] Please see Figure 1 As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, the crystallization feeding and discharging device is also provided with a process water inlet pipe 25. A second flow meter 26 and a valve 18 are installed on the process water inlet pipe 25, and the second flow meter 26 is electrically connected to the control system. When the reactor 29 is working, process water needs to be added to the reactor 29. The process water inlet pipe 25 is set at the top of the reactor 29, and the valve 18 and the second flow meter 26 are installed on the process water inlet pipe 25. The control system opens the valve 18, allowing the process water to pass through the process water inlet pipe 25 from top to bottom and enter the reactor 29. At the same time, the second flow meter 26 monitors the flow rate of the process water, ensuring high accuracy of the flow rate of the process water entering the reactor 29. The second flow meter 26 transmits the flow signal to the control system, which analyzes and processes the signal to determine whether to open, close, or adjust the valve 18 on the process water inlet pipe 25.
[0033] Please see Figure 1 As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, the crystallization feeding and discharging device also includes a breather valve 27 for installation on the top of the reactor 29; the breather valve 27 can automatically adjust when the internal pressure of the reactor 29 changes, ensuring the internal pressure balance of the equipment and ensuring the safe, stable and effective operation of the reactor 29.
[0034] Please see Figure 1 As a specific embodiment of the crystallization feeding and discharging device provided by this utility model, a level switch 28 is provided on the discharge pipe 15, and the level switch 28 is electrically connected to the control system. The level switch 28 is used to monitor the liquid level of the crystallized material in the discharge pipe 15. With the help of the level switch 28, the liquid level of the crystallized material in the discharge pipe 15 can be directly monitored. The level switch 28 sends a signal and transmits it to the control system. After analyzing and processing the signal, the control system controls the valve 18, pump 19, etc. on the discharge pipe 15. The level switch 28 is a tuning fork level switch 28.
[0035] Please see Figure 1 This utility model embodiment also provides a reaction vessel 29, which includes any of the crystallization feeding and discharging devices described above.
[0036] The reactor 29 provided by this utility model adopts the above-mentioned crystallization feeding and discharging device. Therefore, by receiving the temperature signal from the temperature transmitter 10 through the control system, and controlling the opening or closing of the valve 18 and the pump 19, the feeding, discharging, purging and cooling operations of the reactor 29 are carried out automatically and accurately, thereby improving the accuracy of temperature control, crystallization feeding and discharging and purging operations.
[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 crystallization in and out feed device characterized by, The crystallization feeding and discharging device comprises a temperature transmitter, a coil structure, a liquid inlet pipeline, a liquid return pipeline, a feed pipeline, a discharge pipeline, a front purge pipeline, a rear purge pipeline, a plurality of valves and a control system; the temperature transmitter is installed on the reaction kettle and is used for monitoring the temperature in the reaction kettle; the coil structure is wound on the reaction kettle, and the coil structure is provided with an inlet and an outlet; one end of the liquid inlet pipeline is connected to the coil structure and is in communication with the inlet, and is used for adding low-temperature medium into the coil structure; one end of the liquid return pipeline is connected to the coil structure and is in communication with the outlet, and is used for returning and discharging the low-temperature medium in the coil structure; one end of the feed pipeline is used for connecting with the upper end of the reaction kettle, and is used for adding material into the reaction kettle; one end of the discharge pipeline is used for connecting with the lower end of the reaction kettle, and is used for discharging the crystallized material in the reaction kettle; the discharge pipeline is provided with a pump; one end of the front purge pipeline is connected with the discharge pipeline, and the front purge pipeline is located between the pump and the reaction kettle; one end of the rear purge pipeline is connected with the discharge pipeline, and the rear purge pipeline is located on the side of the pump away from the reaction kettle; the plurality of valves are respectively installed on the liquid inlet pipeline, the liquid return pipeline, the feed pipeline, the discharge pipeline, the front purge pipeline and the rear purge pipeline; the plurality of valves are electrically connected with the control system.
2. The crystallization in-out feed device of claim 1, wherein The crystallization feeding and discharging device further comprises a first communication pipe and a second communication pipe, and the first communication pipe and the second communication pipe are located outside the reaction kettle; the first communication pipe is connected with the inlet of the coil structure, and the liquid inlet pipeline is connected with the first communication pipe; the second communication pipe is connected with the outlet of the coil structure, and the liquid return pipeline is connected with the second communication pipe.
3. The crystallization in-out feed device of claim 2, wherein, The coil structure comprises a plurality of spiral pipes arranged in sequence along the height direction of the reaction kettle, and each spiral pipe is provided with the inlet and the outlet; the first communication pipe is provided with a plurality of first branch pipes, the second communication pipe is provided with a plurality of second branch pipes, and the number of the first branch pipes and the second branch pipes is respectively the same as the number of the plurality of spiral pipes; the plurality of first branch pipes are respectively connected with the inlets of the plurality of spiral pipes, and the plurality of second branch pipes are respectively connected with the outlets of the plurality of spiral pipes.
4. The crystallization in-out feed device of claim 1, wherein The inlet and the outlet are respectively located at the lower end and the upper end of the coil structure.
5. The crystallization in-out feed device of claim 1, wherein, The feed pipeline is provided with a first flow meter for monitoring the material feeding amount in the reaction kettle, and the first flow meter is electrically connected with the control system.
6. The crystallization in-out feed device of claim 5, wherein, The feed pipeline is provided with two valves, and the first flow meter is located between the two valves.
7. The crystallization in-out feed device of claim 1, wherein The crystallization feeding and discharging device is further provided with a process water inlet pipeline, and the process water inlet pipeline is provided with a second flow meter and a valve, and the second flow meter is electrically connected with the control system.
8. The crystallization in-out feed device of claim 1, wherein, The crystallization feeding and discharging device further comprises a breather valve installed on the top of the reaction kettle.
9. The crystallization in-out feed device of claim 1, wherein, The liquid level switch is electrically connected with the control system, and is used for monitoring the liquid level of the crystallization material in the discharge pipeline.
10. A reaction vessel, characterized by, The crystallization feeding and discharging device comprises the crystallization feeding and discharging device as claimed in any one of claims 1-9.