Equipment for grading particle size in crystallization process
By designing the particle size grading equipment for the cylinder and jacket structure, multiple grading is performed using the difference in the settlement rate of particles in the solution, the problem of difficulty in grading in the prior art is solved, efficient and low-cost particle size grading is achieved, and production efficiency and particle uniformity are improved.
Patent Information
- Application Number
- CN202422262523.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing crystallization devices and equipment are difficult to meet the particle size rating of the crystals in the solution, resulting in an increase in production costs.
A particle size grading device including a cylinder and a jacket is designed. Through the circulation structure and the arrangement of multiple overflow ports, the difference in the sedimentation rate of particles in the solution is rated, and the particle quality is controlled in combination with the temperature-controlled oil bath to achieve multiple fine grading.
It improves the accuracy and production efficiency of particle size grading, reduces production costs, and ensures particle uniformity and stability of catalytic performance.
Smart Images
Figure CN223276709U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical and pharmaceutical crystallization, in particular to a device for grading particle size in a crystallization process. Background Art
[0002] Crystallization is a very important separation and purification operation, which is widely used in the fine chemical, pharmaceutical, pesticide, food additive and fertilizer industries. Through crystallization, high-purity or ultra-pure crystalline products can be separated from multi-component solutions or molten mixtures containing impurities. At the same time, the crystallization separation process can control the particle size and particle size distribution of the crystals. Therefore, the design and control of the crystallization process are very important in the fine chemical and pharmaceutical industries.
[0003] Indicators for evaluating crystallized products include purity, particle size, particle size distribution, crystal form, and crystal appearance. Particle size and distribution affect the purity, appearance, and fluidity of the crystal product. Most industries, such as fertilizer, inorganic salt, and food additives, require the production of uniform, large crystals. However, existing crystallization equipment and devices struggle to size-classify crystals in solution. To obtain large particles, unclassified particles in the mother liquor are filtered and dried, then screened for the desired large particles. Small particles are then returned to the crystallization stage for further dissolution and crystallization, significantly increasing the cost of crystallization production. Utility Model Content
[0004] The purpose of the utility model is to provide a device for grading particle size during the crystallization process, so as to solve the problem that the particle screening method proposed in the above background technology greatly increases the cost of crystallization production.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for grading particle size during crystallization, comprising a cylinder, which is arranged as a conical cylindrical structure, and also comprising a jacket, which is nested and installed on the outer surface of the cylinder, and the cylinder is connected to a circulation structure, which can enable the material to be circulated and screened, and the circulation structure includes a temperature-controlled oil bath outlet, which is installed through the outer surface of the jacket, a discharge port is installed through the side surface of the cylinder, and a temperature-controlled oil bath inlet is installed through the side surface of the jacket.
[0006] Preferably, the circulation structure further includes a feed port, which is installed through the bottom end of the cylinder, and the other end of the feed port is connected to a feed pump, and the other end of the feed pump is connected to a discharge port.
[0007] By adopting the above technical solution, the material enters the cylinder from the feed port through the discharge port for re-screening.
[0008] Preferably, a vent hole is installed at the upper end of the cylinder.
[0009] By adopting the above technical solution, the internal air pressure can be maintained through the vent hole.
[0010] Preferably, the side surface of the jacket is provided with an opening corresponding to the discharge port, and the other side surface of the jacket is provided with openings corresponding to overflow port 1, overflow port 2, overflow port 3, overflow port 4 and overflow port 5.
[0011] The above technical solution facilitates the material particles to be screened and discharged through overflow port one, overflow port two, overflow port three, overflow port four and overflow port five.
[0012] Preferably, the jacket is configured as a conical structure.
[0013] Adopting the above technical solution makes it easy to control temperature.
[0014] Preferably, overflow port 1, overflow port 2, overflow port 3, overflow port 4 and overflow port 5 are installed through the side surface of the cylinder, and overflow port 1, overflow port 2, overflow port 3, overflow port 4 and overflow port 5 are arranged vertically at equal intervals.
[0015] By adopting the above technical solution, internal particles can be screened by impact force.
[0016] Preferably, the overflow port 1, overflow port 2, overflow port 3, overflow port 4 and overflow port 5 are configured as openings of different calibers.
[0017] The adoption of the above technical solution improves the efficiency of material screening.
[0018] Compared with the prior art, the beneficial effects of the present invention are: the device for particle size classification in the crystallization process:
[0019] 1. The particle size classification equipment in the crystallization process is equipped with a circulation structure, which allows the material to be circulated and screened through the discharge port and the feed port, and can perform multiple fine classifications of the particles, ensuring that particles of different particle sizes are more accurately separated, thereby improving the continuity and efficiency of production;
[0020] 2. Furthermore, the temperature of the jacket can be controlled by the temperature-controlled oil bath outlet and the temperature-controlled oil bath inlet, which can prevent the chemical particles from deforming or agglomerating during the crystallization and screening process, facilitating subsequent processing and use;
[0021] 3. Furthermore, multiple overflow ports are provided so that the material can be graded and screened. By utilizing the principle that crystals of different sizes have different settling rates in the solution, the particles can be discharged in sequence and graded, thus obtaining catalyst particles with uniform particle size and improving the stability of the catalytic performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the new structure of the shaft side surface of this utility model;
[0023] Figure 2 This is a schematic diagram of the upward-looking surface structure of the utility model;
[0024] Figure 3 This is a schematic diagram of the side surface structure of the cylinder of the utility model;
[0025] Figure 4 This is a schematic diagram of the shaft side surface structure of the jacket of the utility model;
[0026] Figure 5 It is a schematic diagram of the front sectional structure of the present utility model.
[0027] In the figure: 1. Cylinder; 2. Temperature-controlled oil bath outlet; 3. Discharge port; 4. Jacket; 5. Feed port; 6. Drain port; 7. Temperature-controlled oil bath inlet; 8. Overflow port 1; 9. Overflow port 2; 10. Overflow port 3; 11. Overflow port 4; 12. Overflow port 5; 13. Vent; 14. Feed pump. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] See also Figure 1-5 The utility model provides a technical solution: a device for grading particle size during a crystallization process, comprising a cylinder 1, a temperature-controlled oil bath outlet 2, a discharge port 3, a jacket 4, a feed port 5, a drain port 6, a temperature-controlled oil bath inlet 7, an overflow port 1 8, an overflow port 2 9, an overflow port 3 10, an overflow port 4 11, an overflow port 5 12, an air vent 13, and a feed pump 14.
[0030] Example 1: The equipment for particle size classification in the crystallization process is provided with a circulation structure, so that the material can be circulated multiple times so that the particles are discharged in a classified manner, specifically;
[0031] The cylinder 1 is set as a conical cylindrical structure and also includes a jacket 4, which is nested and installed on the outer surface of the cylinder 1. The cylinder 1 is connected to a circulation structure, which can make the material circulate and screen. The circulation structure includes a temperature-controlled oil bath outlet 2, which is installed through the outer surface of the jacket 4. The side surface of the cylinder 1 is installed with a discharge port 3, and the side surface of the jacket 4 is installed with a temperature-controlled oil bath inlet 7. The circulation structure also includes a feed port 5, which is installed through the bottom end of the cylinder 1, and the other end of the feed port 5 is connected to a feed pump 14, and the other end of the feed pump 14 is connected to the discharge port 3. The upper end of the cylinder 1 is provided with a vent 13, and the jacket 4 is provided with a discharge port 3. The side surface of the sleeve 4 is provided with an opening, which corresponds to the discharge port 3. The other side surface of the jacket 4 is provided with an opening corresponding to the overflow port 1 8, the overflow port 2 9, the overflow port 3 10, the overflow port 4 11 and the overflow port 5 12. The jacket 4 is provided with a conical structure. The side surface of the cylinder 1 is provided with the overflow port 1 8, the overflow port 2 9, the overflow port 3 10, the overflow port 4 11 and the overflow port 5 12. The overflow port 1 8, the overflow port 2 9, the overflow port 3 10, the overflow port 4 11 and the overflow port 5 12 are arranged vertically at equal intervals. The overflow port 1 8, the overflow port 2 9, the overflow port 3 10, the overflow port 4 11 and the overflow port 5 12 are provided with openings of different diameters.
[0032] When the equipment for particle size classification in the crystallization process is used, Figure 1As shown, the barrel 1 is heated by the jacket 4 nested on the outer surface of the barrel 1, and then the temperature-controlled oil bath outlet 2 and the temperature-controlled oil bath inlet 7 installed on the side surface of the jacket 4 are made to maintain the temperature of the jacket 4, so that the temperature of the barrel 1 is maintained, and the quality of the material particles is maintained. Further, the feed pump 14 is connected through the feed port 5, and then the material will enter the barrel 1 through the feed pump 14, and then the upper end of the feed pump 14 is connected to the discharge port 3. Then, when the feed flow rate is faster, the turbulence of the solution increases, and the impact force and drag force on the crystals also increase, and small particles Since the granular crystals have a smaller mass, they are subject to relatively greater resistance and are more easily carried upward by the high-speed flowing solution. However, the large-grained crystals have a larger mass and greater inertia, and are relatively less likely to be quickly carried by the solution. They are more inclined to sink under the action of gravity. Since the overflow port 1 8, the overflow port 2 9, the overflow port 3 10, the overflow port 4 11 and the overflow port 5 12 are arranged vertically at equal intervals, the overflow port at the lower position is lower. When the solution level reaches this point, mainly the small-grained crystals that have not been fully precipitated can flow out with the solution, because the large-grained crystals have been precipitated to a lower position under the action of gravity. The overflow port at a high position is higher. At this time, the solution mainly contains small particle crystals that can maintain a good suspension state in the solution. They can reach here and be discharged as the liquid level rises. Since crystals of different sizes have different sedimentation rates in the solution, large particle crystals have a fast sedimentation rate and are more likely to settle to the bottom before the solution reaches the low overflow port. Small particle crystals have a slow sedimentation rate and can still remain in the solution when the solution rises to the high overflow port, thereby realizing separation and discharge at overflow ports of different heights according to particle size. The unclassified material will be discharged through the discharge port 3 and then enter the feed port 5 at the lower end of the cylinder 1 again through the feed pump 14, and finally the material is completely discharged through the drain port 6.
[0033] Working principle: When using the equipment for particle size classification in the crystallization process, a circulation structure is provided. After the material particles are classified and discharged, the remaining material will be circulated into the cylinder 1, thereby improving the efficiency of particle size classification and increasing the overall practicality.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for particle size classification during a crystallization process, comprising a cylinder (1), wherein the cylinder (1) is configured as a conical cylindrical structure, and is characterized in that: It also includes a jacket (4), the jacket (4) is nested and installed on the outer surface of the cylinder (1), the cylinder (1) is connected to a circulation structure, the circulation structure can enable the material to be circulated and screened, the circulation structure includes a temperature-controlled oil bath outlet (2), the temperature-controlled oil bath outlet (2) is installed through the outer surface of the jacket (4), the side surface of the cylinder (1) is installed with a discharge port (3), and the side surface of the jacket (4) is installed with a temperature-controlled oil bath inlet (7); The circulation structure further comprises a feed port (5), which is installed through the bottom end of the cylinder (1), and the other end of the feed port (5) is connected to a feed pump (14), and the other end of the feed pump (14) is connected to a discharge port (3); overflow port 1 (8), overflow port 2 (9), overflow port 3 (10), overflow port 4 (11) and overflow port 5 (12) are installed through the side surface of the cylinder (1), and overflow port 1 (8), overflow port 2 (9), overflow port 3 (10), overflow port 4 (11) and overflow port 5 (12) are arranged vertically at equal intervals.
2. The device for particle size classification in a crystallization process according to claim 1, characterized in that: A vent hole (13) is installed at the upper end of the cylinder (1).
3. The device for particle size classification in a crystallization process according to claim 1, characterized in that: The side surface of the jacket (4) is provided with an opening corresponding to the discharge port (3), and the other side surface of the jacket (4) is provided with openings corresponding to overflow port 1 (8), overflow port 2 (9), overflow port 3 (10), overflow port 4 (11) and overflow port 5 (12).
4. The device for particle size classification in a crystallization process according to claim 1, characterized in that: The jacket (4) is configured as a conical structure.
5. The device for particle size classification in a crystallization process according to claim 1, characterized in that: The overflow port 1 (8), overflow port 2 (9), overflow port 3 (10), overflow port 4 (11) and overflow port 5 (12) are configured as openings of different calibers.