Continuous efficient crystallizer device based on ultrasonic enhanced mass transfer
By installing an ultrasonic transducer and an arc-shaped baffle inside the crystallization reactor, combined with a temperature control component, the problems of low mass transfer efficiency and inaccurate temperature control in traditional crystallization devices are solved, achieving a highly efficient and stable crystallization process and improving crystal quality and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HAWKWAY MASCH EQUIP CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional crystallization devices have low mass transfer efficiency, slow crystallization speed, uneven crystal size distribution, and high temperature sensitivity. Existing temperature control systems are difficult to control precisely, resulting in unstable crystallization processes and easy occurrence of poor crystal morphology and impurity residue.
The continuous high-efficiency crystallizer employs ultrasonic-enhanced mass transfer. By installing an ultrasonic transducer inside the crystallization reaction vessel to generate cavitation effect and mechanical vibration, combined with an arc-shaped guide plate to guide the solution flow, and equipped with a temperature control component to achieve precise temperature control, the stability and efficiency of the crystallization process are ensured.
It significantly improves crystallization efficiency, promotes crystal nucleus formation and growth, avoids fluid dead zones, achieves precise temperature control, ensures the stability of crystal quality and yield, and prevents impurity residue.
Smart Images
Figure CN224220782U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crystallization technology, and in particular to a continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer. Background Technology
[0002] In the production processes of chemical, pharmaceutical, and food industries, crystallization is an important means of separation and purification, and its efficiency and quality directly affect the final quality of the product and the production cost.
[0003] Traditional crystallization devices mainly rely on natural convection or mechanical stirring to achieve mass transfer, which has problems such as low mass transfer efficiency, slow crystallization speed, and uneven crystal size distribution. In addition, the crystallization process is highly sensitive to temperature, and existing crystallizer temperature control systems often cannot achieve precise control, resulting in unstable crystallization process and easy occurrence of poor crystal morphology and impurity residue.
[0004] To address this, a continuous high-efficiency crystallizer device based on ultrasonic-enhanced mass transfer is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer, which can solve the problems of low mass transfer efficiency, slow crystallization speed, and uneven crystal size distribution in existing crystallizers that mainly rely on natural convection or mechanical stirring to achieve the mass transfer process. In addition, the crystallization process is highly sensitive to temperature, and existing crystallizer temperature control systems often cannot achieve precise control, resulting in unstable crystallization process and problems such as poor crystal morphology and impurity residue.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer, comprising a crystallization component, wherein a temperature control component is fixedly sleeved on the surface of the crystallization component, and the temperature control component includes a jacket layer;
[0007] The crystallization assembly includes a crystallization reaction vessel. The surface of the crystallization reaction vessel has a groove. An annular support frame is fixedly connected inside the groove. Multiple ultrasonic transducers are fixedly connected inside the annular support frame. An arc-shaped guide plate is fixedly connected inside the crystallization reaction vessel, and the number of arc-shaped guide plates is set to multiple and evenly distributed.
[0008] Preferably, the jacket layer is fixedly sleeved on the surface of the crystallization reaction vessel, and an electric heating element is installed on the inner wall of the jacket layer.
[0009] Preferably, the top of the jacket layer is fixedly connected to an inlet pipe, and the bottom of the jacket layer is fixedly connected to an outlet pipe, both of which are fixedly connected to a refrigeration cycle device.
[0010] Preferably, a temperature sensor is fixedly connected to the inner wall of the crystallization reaction vessel, a support base plate is fixedly connected to the bottom of the jacket layer surface, a PLC controller is fixedly connected to the top of the support base plate, and the ultrasonic transducer and the temperature sensor are both electrically connected to the PLC controller.
[0011] Preferably, the top of the crystallization reaction tank is fixedly connected to a feed tank, which is located inside the jacket layer. The feed tank is fixedly connected to a conveying pipe, and the other end of the conveying pipe passes through the jacket layer and is fixedly connected to a centrifugal pump. The suction end of the centrifugal pump is fixedly connected to a storage device.
[0012] Preferably, the bottom of the crystallization reaction tank is fixedly connected to a discharge tank, and the bottom of the discharge tank is set in a conical shape. The discharge tank is located inside the jacket layer, and the bottom of the discharge tank is fixedly connected to a discharge pipe, and a valve is installed inside the discharge pipe.
[0013] Preferably, a drive motor is fixedly connected to the top of the jacket layer, and the output end of the drive motor passes through the jacket layer and is fixedly connected to a rotating shaft.
[0014] Preferably, a stirring rod is fixedly connected to the surface of the rotating shaft, and both the rotating shaft and the stirring rod pass through the arc-shaped guide plate.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. By setting up a crystallization component, the ultrasonic transducer can directionally emit ultrasonic waves into the solution in the crystallization reaction tank. The cavitation effect and mechanical vibration generated by the ultrasonic waves can effectively break the mass transfer boundary layer of the solution, accelerate the diffusion of solute molecules, promote the formation and growth of crystal nuclei, and greatly improve the crystallization efficiency. At the same time, the arc-shaped guide plate can reasonably guide the flow path of the solution, avoid the occurrence of local fluid dead zones, and make the solution form an orderly circulation flow in the tank.
[0017] 2. This application incorporates a temperature control component that enables rapid heating and cooling of the crystallization reaction vessel. Combined with real-time monitoring by a temperature sensor, it allows for precise temperature control within the crystallization reaction vessel, thereby meeting the stringent temperature requirements of different crystallization processes and preventing crystal quality degradation due to temperature fluctuations. Attached Figure Description
[0018] Figure 1 This is an overall structural diagram of the continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer of this utility model.
[0019] Figure 2 This utility model Figure 1 Front sectional view;
[0020] Figure 3 This is a schematic diagram of the crystallization component of this utility model;
[0021] Figure 4 This is a schematic diagram of the temperature control component of this utility model;
[0022] Figure 5 This utility model Figure 2 Enlarged diagram of point A in the middle.
[0023] In the diagram, 1. Crystallization assembly; 101. Crystallization reaction vessel; 102. Groove; 103. Annular support frame; 104. Ultrasonic transducer; 105. Arc-shaped guide plate; 2. Temperature control assembly; 201. Jacket layer; 202. Electric heating element; 203. Inlet pipe; 204. Outlet pipe; 3. Temperature sensor; 4. Support base plate; 5. PLC controller; 6. Feed tank; 7. Conveying pipe; 8. Centrifugal pump; 9. Outlet tank; 10. Discharge pipe; 11. Drive motor; 12. Rotating shaft; 13. Stirring rod. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5 The present invention provides the following technical solution:
[0026] A continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer includes a crystallization component 1, a temperature control component 2 fixedly sleeved on the surface of the crystallization component 1, and the temperature control component 2 includes a jacket layer 201.
[0027] The crystallization assembly 1 includes a crystallization reaction vessel 101. A groove 102 is formed on the surface of the crystallization reaction vessel 101. An annular support frame 103 is fixedly connected inside the groove 102. Multiple ultrasonic transducers 104 are fixedly connected inside the annular support frame 103. An arc-shaped guide plate 105 is fixedly connected inside the crystallization reaction vessel 101. The number of arc-shaped guide plates 105 is set to multiple and evenly distributed.
[0028] In this embodiment: by setting the crystallization component 1, the crystallization reaction vessel 101 serves as the physical space for the crystallization reaction, capable of accommodating the solution to be crystallized and other structures. The annular support frame 103 is fixed within the groove 102, supporting multiple ultrasonic transducers 104 to form a ring array surrounding the crystallization reaction vessel 101, ensuring stable installation of the transducers and close contact with the crystallization reaction vessel 101. The ultrasonic transducers 104 generate a cavitation effect through high-frequency vibration, which can form microbubbles in the solution and violently break them, generating local high pressure and strong shock waves, disrupting the solution boundary layer and accelerating the crystallization of the solute. Diffusion improves mass transfer efficiency, thereby shortening the crystallization induction period. The arc-shaped guide plate 105 can guide the solution to flow along a specific path, forming regular turbulence or vortex flow, avoiding local dead volume, and ensuring that the solution is uniformly mixed in the crystallization reaction tank 101. At the same time, the arc-shaped guide plate 105 can cooperate with the ultrasonic cavitation effect to further enhance the fluid disturbance intensity, so that the ultrasonic energy is evenly distributed throughout the reaction space, avoiding local overheating or overcooling caused by energy concentration. Through the guiding effect, the crystal is maintained in a suspended state in the solution, preventing precipitation and accumulation, while promoting full contact between the crystal and the solution.
[0029] Specifically, such as Figure 4 As shown, the jacket layer 201 is fixedly sleeved on the surface of the crystallization reaction vessel 101, and an electric heating element 202 is installed on the inner wall of the jacket layer 201.
[0030] Specifically, such as Figure 4 As shown, the top of the jacket layer 201 is fixedly connected to an inlet pipe 203, and the bottom of the jacket layer 201 is fixedly connected to an outlet pipe 204. Both the inlet pipe 203 and the outlet pipe 204 are fixedly connected to the refrigeration cycle equipment.
[0031] Specifically, such as Figure 1 , Figure 5 As shown, a temperature sensor 3 is fixedly connected to the inner wall of the crystallization reaction vessel 101, a support base plate 4 is fixedly connected to the bottom of the surface of the jacket layer 201, a PLC controller 5 is fixedly connected to the top of the support base plate 4, and the ultrasonic transducer 104 and the temperature sensor 3 are both electrically connected to the PLC controller 5.
[0032] In this embodiment: Through the above settings, the electric heating element 202 converts electrical energy into heat energy, which can directly heat the crystallization reaction tank 101, thereby shortening the solution dissolution time. The PLC controller 5 can adjust the heating power according to the feedback signal from the temperature sensor 3 to achieve precise temperature control. The inlet pipe 203 can be connected to the refrigeration circulation equipment. Through the inlet pipe 203, the jacket layer 201 can be connected to the external refrigeration circulation equipment to form a closed-loop circulation system. When rapid cooling or maintaining a low temperature is required, the refrigeration circulation equipment will inject the low-temperature medium into the jacket layer 201 through the inlet pipe 203. After absorbing the heat in the crystallization reaction tank 101, it will flow back from the outlet pipe 204 to achieve temperature regulation. By adjusting the medium flow rate and temperature, the cooling rate during the crystallization process can be precisely controlled to avoid crystal quality problems caused by excessive temperature fluctuations. The temperature sensor 3 can directly measure the solution temperature in the crystallization reaction tank 101 and transmit the data to the PLC controller 5 in real time, thereby enabling real-time temperature monitoring and improving the crystallization effect.
[0033] Specifically, such as Figure 2 As shown, the top of the crystallization reaction tank 101 is fixedly connected to the feed tank 6, and the feed tank 6 is located inside the jacket layer 201. The feed tank 6 is fixedly connected to the inside of the feed pipe 7. The other end of the feed pipe 7 passes through the jacket layer 201 and is fixedly connected to the centrifugal pump 8. The suction end of the centrifugal pump 8 is fixedly connected to the storage equipment.
[0034] Specifically, such as Figure 2 As shown, the bottom of the crystallization reaction tank 101 is fixedly connected to the discharge tank 9, and the bottom of the discharge tank 9 is set in a conical shape. The discharge tank 9 is located inside the jacket layer 201. The bottom of the discharge tank 9 is fixedly connected to the discharge pipe 10, and a valve is installed inside the discharge pipe 10.
[0035] In this embodiment: With the above configuration, the feed tank 6 serves as a transition container between the crystallization reaction tank 101 and the storage equipment, temporarily storing the solution to be crystallized. This prevents the centrifugal pump 8 from directly impacting the crystallization reaction tank 101, which could cause fluid fluctuations. The inner wall of the feed tank 6 is smooth and without dead corners, allowing for temperature control with the jacket layer 201 to prevent premature crystallization of the solution within the crystallization reaction tank 101. The centrifugal pump 8 provides power to pump the solution from the storage equipment into the feed tank 6 through the conveying pipe 7, achieving continuous production. Simultaneously, the conveying pipe 7 penetrates the jacket. The jacket layer 201 adopts a sealed design to prevent leakage of the heat exchange medium inside the jacket layer 201. The discharge tank 9 can collect the crystallized suspension. The temperature of the discharge stage is maintained by the temperature control of the jacket layer 201. At the same time, in conjunction with the guiding effect of the arc-shaped guide plate 105 inside the crystallization reaction tank 101, the crystals can be guided to gather towards the discharge port to avoid stagnation. The conical design can make the crystal flow direction singular, avoiding crystal stagnation caused by the dead volume of flow in the traditional flat-bottom structure. The discharge pipe 10 can realize continuous or intermittent discharge according to the set frequency.
[0036] Specifically, such as Figure 2 As shown, a drive motor 11 is fixedly connected to the top of the jacket layer 201, and the output end of the drive motor 11 passes through the jacket layer 201 and is fixedly connected to a rotating shaft 12.
[0037] Specifically, such as Figure 5 As shown, a stirring rod 13 is fixedly connected to the surface of the rotating shaft 12, and both the rotating shaft 12 and the stirring rod 13 pass through the arc-shaped guide plate 105.
[0038] In this embodiment: With the above settings, the drive motor 11 can drive the rotating shaft 12 to rotate, thereby driving the stirring rod 13 to stir the solution in the crystallization reaction tank 101. By adjusting the motor speed, the stirring intensity can be flexibly adjusted to meet the mixing efficiency requirements of different crystallization processes. The rotating shaft 12 can connect the drive motor 11 and the stirring rod 13, transmitting the rotational power of the drive motor 11 to the stirring rod 13 to achieve the stirring action of the solution. The stirring rod 13 generates mechanical force by rotating, which pushes the solution in the crystallization reaction tank 101 to flow, accelerates solute diffusion, heat transfer and uniform distribution of crystal nuclei, avoids local concentration or temperature unevenness, and can break the solution boundary layer, accelerate the diffusion of solute to the surface of crystal nuclei, and improve the crystallization rate. In addition, with the heating or cooling function of the jacket layer 201, the solution temperature distribution can be made more uniform, preventing local overheating or overcooling from affecting the crystal quality.
[0039] Working principle: First, the solution to be crystallized in the storage equipment is connected to the suction end of the centrifugal pump 8 through a pipeline. Then, the centrifugal pump 8 is started by the PLC controller 5. The centrifugal pump 8 pumps the solution into the feed tank 6 through the feed pipe 7, and then flows evenly into the crystallization reaction tank 101 through the bottom opening of the feed tank 6. If the solution needs to be preheated or precooled, the jacket layer 201 can perform preliminary temperature control of the solution in the feed tank 6 through the electric heating element 202 or the refrigeration circulation equipment to ensure that the temperature of the material entering the crystallization reaction tank 101 is close to the process requirements. After the ultrasonic transducer 104 is powered on, it will emit high-frequency mechanical waves, which are transmitted to the solution through the crystallization reaction tank 101. The ultrasonic waves will generate tiny bubbles in the solution. When the bubbles burst, they release local high temperature and pressure, destroying the solution boundary layer and accelerating the diffusion of the solute to the crystal nucleus surface. Simultaneously, the drive motor 11 is started, which drives the rotating shaft 12 and the stirring rod 13 to rotate. The acoustic vibration directly drives the movement of the solution micro-clusters, and it can form a synergistic effect with the mechanical stirring of the stirring rod 13, thereby enhancing the micro-mass transfer. When the solution passes through the arc-shaped guide plate 105, the arc-shaped surface of the guide plate 105 will convert the solution from radial flow to axial flow with up and down circulation, ensuring uniform mixing of the solution. At the same time, it can prolong the residence time of the solution in the crystallization reaction tank 101, promoting crystal growth. The crystallized solution will settle to the bottom of the crystallization reaction tank 101. The conical design makes the bottom of the discharge tank 9 form a narrowing structure, which can use gravity to concentrate the crystal slurry, thereby increasing the discharge concentration. Finally, the valve of the discharge pipe 10 is opened, and the crystal slurry shell is transported to the subsequent process through the discharge pipe 10.
[0040] 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 continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer, comprising a crystallization component (1), characterized in that: A temperature control component (2) is fixedly sleeved on the surface of the crystallization component (1), and the temperature control component (2) includes a jacket layer (201); The crystallization assembly (1) includes a crystallization reaction vessel (101). A groove (102) is provided on the surface of the crystallization reaction vessel (101). An annular support frame (103) is fixedly connected inside the groove (102). Multiple ultrasonic transducers (104) are fixedly connected inside the annular support frame (103). An arc-shaped guide plate (105) is fixedly connected inside the crystallization reaction vessel (101), and the number of arc-shaped guide plates (105) is set to multiple and evenly distributed.
2. The continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 1, characterized in that: The jacket layer (201) is fixedly sleeved on the surface of the crystallization reaction vessel (101), and an electric heating element (202) is installed on the inner wall of the jacket layer (201).
3. The continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 1, characterized in that: The top of the jacket layer (201) is fixedly connected to an inlet pipe (203), and the bottom of the jacket layer (201) is fixedly connected to an outlet pipe (204). Both the inlet pipe (203) and the outlet pipe (204) are fixedly connected to the refrigeration cycle equipment.
4. The continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 1, characterized in that: A temperature sensor (3) is fixedly connected to the inner wall of the crystallization reaction vessel (101), a support base plate (4) is fixedly connected to the bottom of the surface of the jacket layer (201), a PLC controller (5) is fixedly connected to the top of the support base plate (4), and the ultrasonic transducer (104) and the temperature sensor (3) are electrically connected to the PLC controller (5).
5. The continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 1, characterized in that: The top of the crystallization reaction tank (101) is fixedly connected to a feed tank (6), and the feed tank (6) is located inside the jacket layer (201). The feed tank (6) is fixedly connected to a conveying pipe (7). The other end of the conveying pipe (7) passes through the jacket layer (201) and is fixedly connected to a centrifugal pump (8). The suction end of the centrifugal pump (8) is fixedly connected to a storage device.
6. The continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 1, characterized in that: The bottom of the crystallization reaction tank (101) is fixedly connected to a discharge tank (9), and the bottom of the discharge tank (9) is set in a cone shape. The discharge tank (9) is located inside the jacket layer (201). The bottom of the discharge tank (9) is fixedly connected to a discharge pipe (10), and a valve is installed inside the discharge pipe (10).
7. The continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 1, characterized in that: A drive motor (11) is fixedly connected to the top of the jacket layer (201), and the output end of the drive motor (11) passes through the jacket layer (201) and is fixedly connected to a rotating shaft (12).
8. A continuous high-efficiency crystallizer device based on ultrasonic enhanced mass transfer according to claim 7, characterized in that: A stirring rod (13) is fixedly connected to the surface of the rotating shaft (12), and both the rotating shaft (12) and the stirring rod (13) pass through the arc-shaped guide plate (105).