Spray drying granulation equipment

Abstract

The utility model relates to the technical field of drying and granulating, and discloses spray drying and granulating equipment which comprises a drying tower, a spray drying device and a granulating device, the spray head is arranged at the drying tower; the spray head is provided with a material storage part, and slurry is temporarily stored in the material storage part; the magnetic field generating device is arranged at the spray head and located on the periphery of the material storage part, and the magnetic field generating device is suitable for generating a magnetic field so that magnetic particles in the slurry can be directionally arranged; according to the spray drying granulation equipment provided by the utility model, the magnetic field generating device is arranged, so that particles in the slurry are directionally arranged under the action of an external magnetic field before the slurry is atomized, and secondary particles with directionally arranged internal particles are prepared through a spray drying process, so that the particles are more uniform and consistent in form, and the uniformity of the particles is improved. The overall quality of the product is improved; and by arranging the ultrasonic vibration device, the whole inner wall of the drying tower can be subjected to ultrasonic action, and wall adhesion of materials can be greatly reduced, so that on one hand, the materials are dried more thoroughly, and on the other hand, the yield is increased and material loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drying and granulation technology, specifically to a spray drying and granulation device. Background Technology

[0002] Spray drying granulation is a granulation method in which a slurry or solution is sprayed into a granulation tower, where it is dried and agglomerated by hot spray air to obtain spherical agglomerates. This technology has been widely used in the production of catalysts or other particles with specific size requirements.

[0003] However, in practical applications of current spray drying granulation equipment, the droplets sprayed into the granulation tower form secondary particles during the drying process. However, the orientation of the internal particles of these secondary particles is often random, resulting in poor uniformity and consistency of the particles, affecting the quality of the particles and causing inconvenience to subsequent production and use. Utility Model Content

[0004] In view of this, the present invention provides a spray drying granulation device to solve the problem that the orientation of the internal particles of the dried granules is random during the use of the spray drying granulation device, which affects the granulation quality.

[0005] This utility model provides a spray drying granulation device, comprising: a drying tower having a tower cavity; a nozzle disposed on the drying tower and adapted to spray slurry particles into the tower cavity; and a magnetic field generating device for generating a magnetic field at the nozzle to orient the slurry particles carrying magnetic particles inside the nozzle.

[0006] In one alternative embodiment, the nozzle is at least partially located inside the tower cavity, and the magnetic field generating device is located inside the tower cavity and installed outside the nozzle.

[0007] In one alternative embodiment, the nozzle is provided with a material storage section, and the magnetic field generating device is arranged at least around the material storage section.

[0008] In one alternative embodiment, in the extending direction of the storage section, the extension length of the magnetic field generating device is greater than or equal to the extension length of the storage section within the tower cavity.

[0009] In one optional embodiment, the nozzle is further provided with an atomizing section that communicates with the material storage section and protrudes from the end of the magnetic field generating device.

[0010] In one alternative embodiment, the magnetic field generating device has a housing and an electromagnetic component, the housing being connected to the nozzle, and the electromagnetic component being disposed within the housing.

[0011] In one alternative embodiment, the electromagnetic component includes an iron core and a coil surrounding the iron core.

[0012] In one alternative embodiment, an ultrasonic device is further included, which cooperates with the wall of the drying tower, the ultrasonic device being adapted to generate ultrasonic waves to cause the wall of the drying tower to vibrate.

[0013] In one alternative embodiment, multiple ultrasonic devices are provided, and the multiple ultrasonic devices are spaced apart on the tower wall of the drying tower.

[0014] In one optional embodiment, the system further includes a feeding device connected to the nozzle via a pipeline, the feeding device being adapted to supply slurry into the storage section; and / or, a heating assembly connected to the drying tower via a pipeline, the heating assembly being adapted to supply hot air into the drying tower; the heating assembly includes a first fan and a heater, the heater being connected to the first fan and the drying tower respectively; and / or, a discharge assembly connected to the drying tower, adapted to discharge the dried small particles through the discharge assembly; the discharge assembly has a separator and a second fan, the separator being connected to the drying tower and the second fan respectively; and / or, the drying tower has a discharge port, adapted to discharge the dried large particles through the discharge port.

[0015] Beneficial effects: By setting a magnetic field generator at the nozzle, the particles inside the slurry are oriented under the influence of an external magnetic field before atomization. Then, secondary particles with oriented internal particles are prepared by spray drying, making the particles more uniform in morphology and improving the overall quality of the product. In addition, due to the improved uniformity and consistency of the particles, the loss in subsequent processing and handling, such as the screening process, will be reduced, and the production efficiency will be improved. At the same time, the production cost is effectively controlled due to the reduction of defective products, making it highly practical.

[0016] Beneficial effects: The ultrasonic device continuously generates ultrasonic action on the entire tower wall of the drying tower, effectively reducing the adhesion of materials to the tower wall and improving the drying effect of the materials. Specifically, the ultrasonic action can break the adhesion between the materials and the tower wall, making it easier for the materials to fall off the tower wall and suspend in the dry air, thereby making full contact with the hot air, achieving more efficient heat exchange and moisture evaporation, making the drying more thorough, improving the overall yield of materials, reducing losses, and making it highly practical. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall spray drying granulation equipment of this utility model;

[0019] Figure 2 This is a cross-sectional schematic diagram of the drying tower of this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the nozzle and magnetic field generating device of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Drying tower; 11. Feed inlet; 2. Ultrasonic device; 3. Nozzle; 31. Material storage section; 32. Atomizing section; 4. Magnetic field generating device; 41. Shell; 42. Electromagnetic section; 43. Iron core; 44. Coil; 5. Feeding device; 6. Heating assembly; 61. First fan; 62. Heater; 7. Discharge assembly; 71. Separator; 72. Second fan; 73. Dust collector. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0028] According to an embodiment of the present invention, a spray drying granulation device is provided, the spray drying granulation device comprising:

[0029] The drying tower 1 includes a tower body and a tower cavity inside the tower body. The tower wall of the tower body has a certain strength. The tower body is fixed to the ground with the help of a support. The bottom of the tower body is provided with a discharge port 11. The tower cavity is the main space for drying slurry particles.

[0030] The nozzle 3 is installed on the tower wall of the drying tower 1. The nozzle 3 has a material storage section 31, which is connected to the feed pipe of the nozzle 3. It is used to temporarily store a certain amount of slurry. The spraying side of the nozzle 3 is set towards the tower cavity to spray slurry particles into the tower cavity. The sprayed slurry particles are dried in the tower cavity.

[0031] The magnetic field generating device 4 can be flexibly installed in any location as needed, as long as it can generate a magnetic field inside the nozzle 3. For example, in one embodiment, the magnetic field generating device 4 is installed at the nozzle 3 and located around the material storage section 31. The magnetic field generating device 4 can generate a magnetic field that can orient the slurry particles with magnetic particles inside the nozzle 3. Specifically, this magnetic field can be the feed pipe of the nozzle 3 and all the slurry in the storage chamber, thereby making the orientation of the particles inside the slurry particles consistent. The nozzle 3 then sprays secondary particles with oriented internal particles into the tower cavity, ensuring the uniformity and consistency of the particles and greatly improving the granulation quality.

[0032] The ultrasonic device 2 is used in conjunction with the wall of the drying tower 1. The ultrasonic device 2 is adapted to generate ultrasonic waves, which cause the wall of the drying tower 1 to vibrate. This can remove the slurry adhering to the wall and prevent the slurry particles from sticking again, greatly reducing the wall adhesion phenomenon, making the slurry dry more thoroughly and reducing slurry loss. The ultrasonic device 2 has a transmitting end, which is in contact with the wall of the drying tower 1.

[0033] The spray drying granulation equipment also includes: a feeding device 5, which is connected to the nozzle 3 via a pipeline; the feeding device 5 is used to supply slurry to the storage section 31 of the nozzle 3; the supplied slurry is atomized by the nozzle 3 and sprayed into the tower cavity for drying; a heating component 6, which is connected to the drying tower 1 via a pipeline; the heating component 6 is used to supply hot air into the tower cavity of the drying tower 1 to achieve the drying of slurry particles; and a discharge component 7, which is connected to the drying tower 1. The discharge component 7 includes a second fan 72, a separator 71, and a dust collector 73. The second fan 72 is an exhaust fan; the separator 71 is used for gas-solid separation to separate small particles; the separated exhaust gas flows into the dust collector 73 for dust removal and is then discharged outwards; the dried small particles are discharged through the discharge component 7, and the dried large particles are discharged through the discharge port 11 of the tower body.

[0034] The specific operation process of the spray drying granulation equipment is as follows: the heating component 6 heats the outside cold air and sends it into the tower cavity of the drying tower 1. The nozzle 3 atomizes the slurry and sprays it into the tower cavity. Since the nozzle 3 is equipped with a magnetic field generating device 4, the magnetic field generated by the magnetic field generating device 4 has a magnetic effect on the slurry in the nozzle 3, causing the internal particles of the slurry to align in an orientation. This makes the internal particles of the secondary particles formed by the atomized droplets have a consistent orientation, ensuring high uniformity and consistency of the particles and greatly improving the particle quality. After the slurry is atomized, it is sprayed into the drying tower 1. In the contact between the drying tower 1 and the hot air, the moisture is rapidly vaporized, thus obtaining the dried product. During the drying process, the ultrasonic device 2 continuously generates ultrasonic action on the entire tower wall of the drying tower 1, which can greatly reduce material adhesion to the wall and make the material dry more thoroughly. The large particles after drying are discharged from the feed port 11 at the bottom of the drying tower 1, and the small particles are introduced into the separator 71 by the second fan 72 for separation and discharge. The separated exhaust gas enters the dust collector 73 for dust removal and is then discharged.

[0035] Preferably, in the extending direction of the storage section 31, the extending length of the magnetic field generating device 4 is greater than or equal to the extending length of the storage section 31 within the tower cavity. In this embodiment, combined with... Figure 3 As shown, the material storage section 31 extends in the vertical direction. Therefore, the extension length of the magnetic field generating device 4 in the vertical direction can be greater than or equal to the extension length of the material storage section 31 in the vertical direction. Furthermore, the magnetic field generating device 4 is positioned corresponding to the material storage section 31, ensuring that it completely surrounds the material storage section 31. This facilitates the generation of magnetic fields at various locations within the material storage section 31 by the magnetic field generating device 4, reducing the number of particles that flow to the atomizing section and are sprayed out before being oriented under the action of the magnetic field, thereby improving the effectiveness of the magnetic field generating device 4 and the particle quality.

[0036] Preferably, the strength of the magnetic field can be changed by adjusting the magnitude of the current at the four points of the magnetic field generator, thereby adjusting the morphology and size of the secondary particles, as well as the degree of orientation of the internal particles, to make it suitable for actual drying production.

[0037] In this embodiment, by setting a magnetic field generating device 4 at the nozzle 3, the particles inside the slurry are oriented under the action of an external magnetic field before atomization. Then, secondary particles with oriented internal particles are prepared by spray drying process, making the particles more uniform in morphology and improving the overall quality of the product. In addition, since the uniformity and consistency of the particles are improved, the loss in subsequent processing and manufacturing processes such as screening will be reduced, and the production efficiency will be improved. At the same time, since the generation of defective products is reduced, the production cost is also effectively controlled, which is highly practical.

[0038] In this embodiment, the ultrasonic device 2 continuously generates ultrasonic action on the entire tower wall of the drying tower 1, which effectively reduces the adhesion of materials on the tower wall and improves the drying effect of the materials. Specifically, the ultrasonic action can break the adhesion between the materials and the tower wall, making it easier for the materials to fall off the tower wall and suspend in the dry air, thereby making full contact with the hot air, achieving more efficient heat exchange and moisture evaporation, making the drying more thorough, improving the overall yield of the materials, reducing losses, and making it highly practical.

[0039] In some embodiments, combined with Figure 1 As shown, multiple ultrasonic devices 2 are provided, and the multiple ultrasonic devices 2 are evenly spaced along the circumference of the drying tower 1. This ensures that the entire wall of the drying tower 1 is subjected to uniform ultrasonic action, thereby improving the efficiency of ultrasonic action, drying efficiency, and product quality.

[0040] In some embodiments, combined with Figure 3 As shown, the magnetic field generating device 4 has a housing 41 and an electromagnetic part 42. The housing 41 is connected to the nozzle 3. The electromagnetic part 42 is located inside the housing 41. The electromagnetic part 42 includes an iron core 43 and a coil 44 surrounding the iron core 43. The magnetic field generated by the electromagnetic part 42 surrounds the feed pipe of the nozzle 3 and the storage part 31. The iron core 43 can be made of a material with high magnetic permeability, such as soft iron or electromagnetism. Its function is to concentrate and enhance the magnetic field generated by the coil 44, so that the magnetic field can act more effectively on the particles in the slurry. The coil 44 can be made of a conductive material and is wound around the iron core 43. When the coil 44 is energized, it generates a magnetic field. This magnetic field is transmitted to the slurry through the iron core 43, producing a magnetic induction effect on the particles in the slurry, causing them to orient themselves. The combination of the iron core 43 and the coil 44 can generate a magnetic field of greater intensity, which can efficiently exert a magnetic induction effect on the particles in the slurry.

[0041] In some embodiments, combined with Figure 3 As shown, the nozzle 3 also includes an atomizing section 32, which is connected to the material storage section 31 and is used to atomize the slurry into tiny droplets so that it can fully contact and dry with hot air.

[0042] Furthermore, the atomizing part 32 is provided to protrude from the end of the magnetic field generating device to prevent the magnetic field generating device 4 from blocking the atomizing part 32 and to ensure that the atomization effect of the nozzle 3 is not affected.

[0043] In some embodiments, combined with Figure 1 As shown, the discharge assembly 7 also includes a separator 71, a second fan 72, and a dust collector 73. The separator 71 is connected to the drying tower 1 and the second fan 72 via pipelines. The separator 71 can be a cyclone separator 71 for gas-solid separation. The second fan 72 is an exhaust fan for induced airflow. The second fan 72 is connected to the dust collector 73 via pipelines. Under the induced airflow of the second fan 72, small particles are introduced into the separator 71 by the airflow and separated. The separated exhaust airflow enters the dust collector 73 for dust removal and is then discharged outwards.

[0044] In some embodiments, combined with Figure 1 As shown, the heating assembly 6 includes a first fan 61 and a heater 62. The heater 62 is connected to the first fan 61 and the drying tower 1 respectively. The first fan 61 is an air supply fan used to supply air to the heater 62 and the drying tower 1. The first fan 61 can also be connected to an air filter through a pipeline. The cold air is filtered through the air filter and then enters the heater 62 through the first fan 61 for heating. The heated air enters the drying tower 1 cavity to facilitate drying in the drying tower 1 cavity.

[0045] In some embodiments, combined with Figure 1 As shown, the feeding device 5 includes a filter and a feeding pump. The filter is used to filter the material, and the feeding pump is used to supply the filtered material into the nozzle 3 through a pipeline.

[0046] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A spray drying granulation device, characterized in that, include: Drying tower (1) is provided with a tower cavity; A nozzle (3) is provided on the drying tower (1) and is adapted to spray slurry particles into the tower cavity; A magnetic field generating device (4) is used to generate a magnetic field at the nozzle (3) so that the slurry particles with magnetic particles inside the nozzle (3) are oriented.

2. The spray drying granulation equipment according to claim 1, characterized in that, The nozzle (3) is at least partially located inside the tower cavity, and the magnetic field generating device (4) is located inside the tower cavity and installed outside the nozzle (3).

3. The spray drying granulation equipment according to claim 2, characterized in that, The nozzle (3) is provided with a material storage section (31), and the magnetic field generating device (4) is arranged at least around the material storage section (31).

4. The spray drying granulation equipment according to claim 3, characterized in that, In the extending direction of the storage section (31), the extension length of the magnetic field generating device (4) is greater than or equal to the extension length of the storage section (31) within the tower cavity.

5. The spray drying granulation equipment according to claim 4, characterized in that, The nozzle (3) is also provided with an atomizing part (32), which is connected to the material storage part (31), and the atomizing part (32) protrudes from the end of the magnetic field generating device (4).

6. The spray drying granulation equipment according to claim 1, characterized in that, The magnetic field generating device (4) has a housing (41) and an electromagnetic part (42). The housing (41) is connected to the nozzle (3), and the electromagnetic part (42) is disposed inside the housing (41).

7. The spray drying granulation equipment according to claim 6, characterized in that, The electromagnetic part (42) includes an iron core (43) and a coil (44) surrounding the iron core (43).

8. The spray drying granulation equipment according to any one of claims 1 to 7, characterized in that, It also includes an ultrasonic device (2) that works in conjunction with the wall of the drying tower (1). The ultrasonic device (2) is adapted to generate ultrasonic waves to cause the wall of the drying tower (1) to vibrate.

9. The spray drying granulation equipment according to claim 8, characterized in that, The ultrasonic device (2) is provided in multiple units, and the multiple ultrasonic devices (2) are spaced apart on the tower wall of the drying tower (1).

10. The spray drying granulation equipment according to any one of claims 1 to 7, characterized in that, It also includes a feeding device (5) that is connected to the nozzle (3) via a pipeline, the feeding device (5) being adapted to supply slurry into the nozzle (3); And / or, also includes a heating assembly (6) connected to the drying tower (1) via a pipeline, the heating assembly (6) being adapted to supply hot air into the drying tower (1); the heating assembly (6) includes a first fan (61) and a heater (62), the heater (62) being connected to the first fan (61) and the drying tower (1) via pipelines respectively; And / or, also includes a discharge assembly (7) connected to the drying tower (1) and adapted to discharge the dried small particulate material through the discharge assembly (7); the discharge assembly (7) has a separator (71) and a second fan (72), the separator (71) being connected to the drying tower (1) and the second fan (72) respectively via pipelines; And / or, the drying tower (1) has a discharge port (11) adapted to discharge the dried large particulate material through the discharge port (11).

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