Solid-state battery material closed loop spray dryer

Abstract

The utility model belongs to the technical field of spray drying equipment, specifically relates to a solid -state battery material closed -circuit circulation spray drier, the device includes: drying barrel, it includes detachable installation's cylindrical body and conical body, hot -blast drying device, it is installed in the drying barrel top, is used for output hot -blast to dry material, wherein, the cylindrical body inside is provided with drying chamber, heat preservation chamber and heat insulation chamber from inside to outside in proper order, and, hot -blast drying device operation, material and hot -blast enter drying chamber in drying barrel top and dry from drying chamber top, heat preservation chamber absorbs the temperature in drying chamber, and maintains the temperature uniformity in drying chamber, heat insulation chamber blocks the temperature of heat preservation chamber and disperses outward. By setting drying chamber, heat preservation chamber and heat insulation chamber from inside to outside in proper order, make in the whole equipment continuous operation process, realize internal temperature control through heat preservation chamber, reduce the rate of heat outward emission through heat insulation chamber greatly at the same time, reduce operating energy consumption.

Description

Technical Field

[0001] This utility model belongs to the technical field of spray drying equipment, specifically relating to a closed-loop spray dryer for solid-state battery materials. Background Technology

[0002] A spray dryer is a continuous drying device that converts liquid materials (solutions, emulsions, suspensions, or slurries) into dry powder through atomization. It is one of the most widely used drying technologies in modern industry.

[0003] In related technologies, spray dryers require maintaining a target high temperature inside the machine to ensure drying efficiency and product quality. However, the machine is large, and the energy required to maintain the target temperature is also very high, resulting in high initial costs and high operating consumption. Currently, a common approach is to add blowers and induced draft fans to the spray tower and interlock them with the main machine to stabilize the temperature. However, configuring additional equipment increases investment costs, and for existing equipment, adding extra equipment requires significant modifications and design changes.

[0004] Therefore, there is an urgent need to design a closed-loop spray dryer for solid-state battery materials to solve the problems of large machine size and very high energy requirements for maintaining the target temperature. This results in high initial costs and high operating consumption. While adding temperature control equipment can solve the temperature control issue, the initial investment cost remains significant.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] This disclosure provides at least one closed-loop spray dryer for solid-state battery materials.

[0007] This disclosure provides a closed-loop spray dryer for solid-state battery materials, including: a drying drum comprising a detachably mounted cylindrical body and a conical body; A hot air drying device, installed on top of a drying drum, is used to output hot air to dry materials; The cylindrical body contains, from the inside out, a drying chamber, a heat preservation chamber, and a heat insulation chamber. Furthermore, when the hot air drying device is running, the material and hot air enter the drying chamber from the top of the drying barrel for drying. The heat preservation chamber absorbs the temperature inside the drying chamber and maintains a uniform temperature inside the drying chamber. The heat insulation chamber prevents the temperature inside the heat preservation chamber from dissipating outward.

[0008] In one alternative embodiment, the insulation cavity contains a heat storage medium.

[0009] In one alternative embodiment, the insulation cavity has a heat-conducting frame that is uniformly filled circumferentially within the insulation cavity.

[0010] In one optional embodiment, the heat-conducting frame includes a plurality of heat-conducting columns evenly distributed circumferentially and a plurality of heat-conducting rings evenly distributed axially. The heat-conducting ring is sequentially spliced ​​with each heat-conducting column along the axial direction to form a whole.

[0011] In one alternative embodiment, the insulation cavity contains insulation packing.

[0012] In one alternative embodiment, the hot air drying device includes an atomizing nozzle and a hot air duct; The hot air duct is adapted to output hot air to heat the material sprayed from the atomizing nozzle.

[0013] In one alternative embodiment, the outlet of the hot air duct is annular and is arranged around the outlet of the atomizing nozzle.

[0014] In one optional embodiment, the hot air drying device further includes a fan and a heater, with the air outlet of the fan connected to the air inlet of the heater, and the air outlet of the heater connected to the air inlet of the hot air duct.

[0015] In one alternative embodiment, a cyclone separator is connected to the bottom of the drying drum.

[0016] In one alternative embodiment, a bag filter is connected to the bottom of the drying drum.

[0017] The beneficial effects of this invention are that, by sequentially arranging a drying chamber, a heat-insulating chamber, and a thermal insulation chamber from the inside out, the heat-insulating chamber enables internal temperature control during continuous operation of the entire device, while the thermal insulation chamber significantly reduces the rate of heat loss, thus lowering operating energy consumption. The heat-insulating chamber ensures uniform temperature distribution within the drying chamber, avoiding the common problem of significantly higher temperatures at the top than at the bottom in conventional equipment. Furthermore, preheating the heat-insulating chamber by circulating preheated air can preheat the device, improving operational efficiency.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention are realized in the structures particularly pointed out in the description, claims, and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] 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.

[0021] Figure 1 A perspective view of a closed-loop spray dryer for solid-state battery materials provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the internal structure of a drying barrel provided in an embodiment of the present disclosure; Figure 3 for Figure 2 A magnified view of part A in the middle; Figure 4 This is a schematic diagram of a heat conduction frame provided in an embodiment of the present disclosure.

[0022] In the picture: 1. Drying drum; 11. Cylindrical shape; 12. Conical shape; 2. Hot air drying device; 21. Atomizing nozzle; 22. Hot air duct; 23. Fan; 24. Heater; 3. Drying chamber; 4. Insulation chamber; 5. Heat insulation chamber; 6. Heat-conducting frame; 61. Heat-conducting column; 62. Heat-conducting ring; 7. Cyclone separator. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure 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] Research has revealed that, in order to ensure drying efficiency and product quality, spray dryers require maintaining a consistently high internal temperature. However, this results in a large machine size and requires a significant amount of energy to maintain the target temperature, leading to high initial costs and high operating consumption. Currently, a common approach is to add blowers and induced draft fans to the spray tower, creating an interlocked control system with the main machine to stabilize the temperature. However, adding extra equipment increases initial investment costs, and for existing equipment, adding additional equipment requires substantial modifications and redesigns.

[0025] Therefore, there is an urgent need to design a closed-loop spray dryer for solid-state battery materials to solve the problems of large machine size and very high energy requirements for maintaining the target temperature. This results in high initial costs and high operating consumption. While adding temperature control equipment can solve the temperature control issue, the initial investment cost remains significant.

[0026] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Based on the above research, and referring to Figure 1 This disclosure provides a closed-loop spray dryer for solid-state battery materials, comprising: a drying drum 1, a hot air drying device 2, and a cyclone separator 7. The top of the drying drum 1 is the inlet, and the bottom is the outlet. The hot air drying device 2 is installed on the top of the drying drum 1 and is used to output hot air to dry the material. The outlet of the drying drum 1 is connected to the cyclone separator 7 via a pipe. The hot air drying device 2 conveys liquid material and hot air to the top of the drying drum 1 and sprays them out. After the hot air dries the material, the solid material and hot air are discharged together from the outlet and enter the cyclone separator 7. After the cyclone separator 7 separates the exhaust gas, the solid material can be unloaded.

[0030] In some embodiments, the cyclone separator 7 can also be replaced by a bag filter, or other separation devices capable of separating solids and gases, to achieve the purpose of separating materials from waste gas.

[0031] Reference Figure 2 In some embodiments, the drying chamber 1 includes a detachably mounted cylindrical body 11 and a conical body 12, wherein the drying of the liquid material is mainly carried out in the cylindrical body 11, and the conical body 12 is used to guide the material to gather towards the discharge port.

[0032] Reference Figure 3In at least one embodiment, the cylindrical body 11 is provided with a drying chamber 3, a heat-insulating chamber 4, and a heat-resistant chamber 5 arranged sequentially from the inside to the outside. The drying chamber 3, heat-insulating chamber 4, and heat-resistant chamber 5 are all separated by partitions to ensure that material does not pass through the drying chamber 3 and enter the heat-insulating chamber 4. When the hot air drying device 2 is running, the material and hot air enter the drying chamber 3 from the top of the drying barrel 1 for drying. The heat-insulating chamber 4 absorbs the temperature inside the drying chamber 3 and maintains a uniform temperature within the drying chamber 3. The heat-resistant chamber 5 prevents the temperature inside the heat-insulating chamber 4 from dissipating outwards.

[0033] In at least one embodiment, the heat-insulating cavity 4 contains a heat storage medium, such as heat transfer oil or molten salt.

[0034] In at least one embodiment, the heat insulation cavity 5 contains heat insulation filler, such as polystyrene, polyurethane foam, aerogel felt, vacuum insulation board, etc.

[0035] Reference Figure 3 In at least one embodiment, when hot air enters the drying chamber 3, it heats the heat storage medium in the insulation chamber 4 through the partition. Simultaneously, to ensure uniform heat transfer, the insulation chamber 4 is equipped with a heat-conducting frame 6, which is uniformly filled circumferentially within the insulation chamber 4. Heat is transferred throughout the insulation chamber 4 via the heat-conducting frame 6, thereby uniformly heating the heat storage medium at various locations. The heat-conducting frame 6 ensures a uniform temperature distribution within the drying chamber 3, avoiding the common problem of significantly higher temperatures at the top than at the bottom in conventional equipment, thus improving the overall drying quality and preventing the discharge of insufficiently dried material.

[0036] Reference Figure 4 In at least one embodiment, the heat-conducting frame 6 includes a plurality of heat-conducting columns 61 evenly distributed circumferentially and a plurality of heat-conducting rings 62 evenly distributed axially. The heat-conducting rings 62 are sequentially spliced ​​with the heat-conducting columns 61 along the axial direction to form a whole. Through the arrangement of the heat-conducting columns 61, heat is guided to pass through the upper and lower parts of the cylindrical body 11, while the heat-conducting rings 62 guide the heat to fully diffuse between the heat-conducting columns 61, ensuring that the heat storage medium at all locations can be uniformly heated.

[0037] Reference Figure 2 In at least one embodiment, the hot air drying device 2 includes an atomizing nozzle 21 and a hot air duct 22. The hot air duct 22 is adapted to output hot air to heat the material sprayed from the atomizing nozzle 21. Simultaneously, the air outlet of the hot air duct 22 is annular and arranged around the discharge port of the atomizing nozzle 21 to ensure that the material sprayed from the atomizing nozzle 21 is immediately dried by hot air, ensuring sufficient drying.

[0038] Reference Figure 2In at least one embodiment, the hot air drying device 2 further includes a fan 23 and a heater 24. The air outlet of the fan 23 is connected to the air inlet of the heater 24, and the air outlet of the heater 24 is connected to the air inlet of the hot air duct 22. The fan 23 continuously generates airflow, which is heated by the heater 24 to form hot air, which then enters the hot air duct 22 and finally enters the drying chamber 3 to dry the material.

[0039] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Based on the above-described ideal embodiments according to this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the disclosed embodiments. The technical scope of the embodiments of this disclosure is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A closed-loop spray dryer for solid-state battery materials, characterized in that, include: The drying drum (1) includes a detachably mounted cylindrical body (11) and a conical body (12). A hot air drying device (2) is installed on top of the drying barrel (1) and is used to output hot air to dry the material; The cylindrical body (11) is provided with a drying chamber (3), a heat preservation chamber (4) and a heat insulation chamber (5) arranged sequentially from the inside to the outside. In addition, when the hot air drying device (2) is running, the material and hot air enter the drying chamber (3) from the top of the drying barrel (1) for drying. The heat preservation chamber (4) absorbs the temperature in the drying chamber (3) and maintains the temperature in the drying chamber (3) uniformly. The heat insulation chamber (5) prevents the temperature of the heat preservation chamber (4) from dissipating outward.

2. The closed-loop spray dryer for solid-state battery materials as described in claim 1, characterized in that, The heat-insulating cavity (4) contains a heat storage medium.

3. The closed-loop spray dryer for solid-state battery materials as described in claim 1, characterized in that, The heat insulation cavity (4) has a heat-conducting frame (6), which is uniformly filled in the heat insulation cavity (4) along the circumference.

4. The closed-loop spray dryer for solid-state battery materials as described in claim 3, characterized in that, The heat-conducting frame (6) includes several heat-conducting columns (61) evenly distributed along the circumference and several heat-conducting rings (62) evenly distributed along the axial direction. The heat-conducting ring (62) is sequentially spliced ​​with each heat-conducting column (61) along the axial direction to form a whole.

5. The closed-loop spray dryer for solid-state battery materials as described in claim 1, characterized in that, The heat insulation cavity (5) contains heat insulation filler.

6. The closed-loop spray dryer for solid-state battery materials as described in claim 1, characterized in that, The hot air drying device (2) includes an atomizing nozzle (21) and a hot air pipe (22); The hot air duct (22) is adapted to output hot air to heat the material sprayed out by the atomizing nozzle (21).

7. The closed-loop spray dryer for solid-state battery materials as described in claim 6, characterized in that, The outlet of the hot air pipe (22) is annular and is arranged around the outlet of the atomizing nozzle (21).

8. The closed-loop spray dryer for solid-state battery materials as described in claim 6, characterized in that, The hot air drying device (2) also includes a fan (23) and a heater (24). The air outlet of the fan (23) is connected to the air inlet of the heater (24), and the air outlet of the heater (24) is connected to the air inlet of the hot air pipe (22).

9. The closed-loop spray dryer for solid-state battery materials as described in claim 1, characterized in that, The bottom of the drying barrel (1) is connected to a cyclone separator (7).

10. The closed-loop spray dryer for solid-state battery materials as described in claim 1, characterized in that, A bag filter is connected to the bottom of the drying drum (1).

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