Spray drying equipment

Abstract

The utility model discloses spray drying equipment, and belongs to the field of drying devices, and the spray drying equipment comprises a tower body, a spray head and a cooling assembly. A drying cavity is formed in the tower body, and a first air inlet and a discharging opening are formed in the two ends of the tower body respectively; the spray head is used for providing vaporous materials into the drying cavity; the first gas inlet is used for allowing high-temperature dry gas to enter the drying cavity, and the discharge port is used for allowing granular materials and the dry gas to leave the drying cavity; the spray drying equipment further comprises a cooling assembly, and the cooling assembly is arranged on the peripheral side of the tower body in a surrounding mode and used for adjusting the temperature of the wall portion of the tower body. According to the spray drying equipment provided by the invention, the risk that granular materials are adhered to the wall part of the tower body due to high temperature of the wall part of the tower body can be effectively reduced, so that the difficulty of manual cleaning is reduced.

Description

Technical Field

[0001] The present application relates to the field of drying devices, and in particular to a spray drying device. Background Art

[0002] When using pressure or airflow spray drying process to produce heat-sensitive high-viscosity powder, due to the high temperature of the inner wall of the drying tower, after the dried particles come into contact with the inner wall of the tower, the particles are easily softened by the high temperature of the tower wall, causing the particles to stick to the wall of the tower, which is inconvenient for manual cleaning. Utility Model Content

[0003] The embodiment of the present application provides a spray drying device, which can effectively reduce the risk of granular materials adhering to the wall of the tower body due to the high temperature of the wall of the tower body, thereby reducing the difficulty of manual cleaning.

[0004] The embodiment of the present application provides a spray drying device, including a tower body, a nozzle and a cooling assembly. The tower body has a drying chamber, and the two ends of the tower body have a first air inlet and a material outlet respectively; the nozzle is used to provide a mist material into the drying chamber; the first air inlet is used to allow the drying gas to enter the drying chamber, and the material outlet is used to allow the granular material and the drying gas to leave the drying chamber; wherein, the spray drying device also includes a cooling assembly, which is arranged around the outer peripheral side of the tower body and is used to adjust the temperature of the wall of the tower body.

[0005] In the above technical solution, the cooling component is arranged on the outer peripheral side of the tower body and is used to adjust the temperature of the wall of the tower body, so that the temperature of the peripheral wall of the tower body can be lowered by the cooling component, and then the temperature of the peripheral wall of the tower body is within a range that is not easy to soften the material, thereby reducing the risk of the dried material being softened by the temperature of the peripheral wall of the tower body after contacting the peripheral wall of the tower body, causing the material to stick to the inner surface of the tower body, thereby reducing the difficulty of manually cleaning the cavity wall of the drying chamber.

[0006] In some embodiments, the cooling assembly includes a first cooling component, which is arranged around the outer peripheral side of the tower body and is used to accommodate a first heat exchange medium. The first cooling component has a first medium inlet and a first medium outlet; along the movement direction of the material, the first medium inlet is located upstream of the first medium outlet.

[0007] In the above technical solution, along the moving direction of the material, the first medium inlet is located upstream of the first medium outlet, so that after entering the cooling assembly from the first medium inlet, it first contacts the area close to the first air inlet and the nozzle. Since the area is close to the first air inlet and the nozzle, the temperature is relatively high. At this time, the first heat exchange medium is in a relatively low temperature state, which can better reduce the temperature of the area close to the first air inlet and the nozzle, thereby reducing the risk of the material adhering to the wall of the tower body due to the high temperature of the wall of the tower body, thereby reducing the difficulty of manual cleaning. At the same time, as the temperature of the surrounding wall of the tower body away from the first air inlet and the nozzle gradually decreases, the temperature of the first heat exchange medium gradually increases, and the cooling capacity is weakened, thereby reducing the cooling capacity of the first heat exchange medium to the area away from the first air inlet and the nozzle tower body, thereby reducing the temperature difference of the surrounding wall of the tower body, thereby making the temperature of the surrounding wall of the tower body more uniform.

[0008] In some embodiments, the spray drying equipment also includes a first dehumidifier and a heater; the heater has a second air inlet and an air outlet connected to the first air inlet, the first dehumidifier is used to remove water vapor in the gas to form dry gas, and provide dry gas to the second air inlet, and the heater is used to provide heat to the dry gas.

[0009] In the above technical solution, water vapor in the gas is removed by the first dehumidifier to form dry gas, and heat is provided to the dry gas by the heater to form high-temperature dry gas, so as to dry the atomized material. The structure is simple and easy to implement.

[0010] In some embodiments, the first heat exchange medium is dry gas, and the first medium outlet is connected to the second gas inlet.

[0011] In the above technical solution, the first heat exchange medium is a dry gas, and the first medium outlet is connected to the second air inlet, so that the first heat exchange medium can be heated by the heater for drying the mist material after its own temperature is increased due to the surrounding wall of the cooling tower body, thereby rationally utilizing the heat energy carried by the first heat exchange medium after leaving the cooling component from the first medium outlet, thereby reducing the energy consumption of the spray drying equipment.

[0012] In some embodiments, the spray drying equipment further includes a second dehumidifier; the second dehumidifier is connected to the first medium inlet, and the second dehumidifier is used to remove water vapor in the gas to form dry gas, and provide dry gas to the first medium inlet.

[0013] In the above technical solution, water vapor in the gas is removed by the second dehumidifier to form dry gas, and the dry gas is provided to the first medium inlet so that the dry gas serving as the first heat exchange medium reduces the temperature of the peripheral wall of the tower body. The structure is simple and easy to implement.

[0014] In some embodiments, the first cooling component has a first flow channel for accommodating the first heat exchange medium, and the first flow channel is spirally arranged around the outer circumference of the tower body.

[0015] In the above technical solution, the first flow channel is spirally arranged around the outer circumference of the tower body, thereby increasing the length of the first flow channel relative to the straight first flow channel. On the one hand, the area for heat exchange between the first flow channel and the surrounding wall of the tower body is increased, thereby improving the ability of the first cooling component to control the temperature of the surrounding wall of the tower body. On the other hand, the movement time of the first heat exchange medium from the first medium inlet through the first flow channel to the first medium outlet is increased, thereby increasing the time for the first heat exchange medium to exchange heat with the surrounding wall of the tower body through the first cooling component, thereby improving the cooling effect of the first heat exchange medium on the surrounding wall of the tower body.

[0016] In some embodiments, the cooling assembly also includes a second cooling component; the second cooling component is arranged around the outer peripheral side of the tower body and is used to accommodate a second heat exchange medium, and the second cooling component has a second medium inlet and a second medium outlet; along the movement direction of the material, the second medium inlet is located upstream of the second medium outlet, and the first cooling component is located upstream of the second cooling component.

[0017] In the above technical solution, along the movement direction of the material, the first cooling component is located upstream of the second cooling component, so as to reduce the risk of too little cooling of the peripheral wall of the tower body and too high temperature of the peripheral wall of the tower body due to too long time for the heat exchange medium in the single cooling component to exchange heat with the peripheral wall of the tower body through the cooling component, compared with the situation where a single cooling component is used to cool the peripheral wall of the entire tower body. This can reduce the risk of the material sticking to the inner circumference of the tower body due to too high temperature of the peripheral wall of the tower body.

[0018] In some embodiments, the second heat exchange medium is dry gas, and the second medium outlet is connected to the interior of the tower body.

[0019] In the above technical solution, the second heat exchange medium is dry gas, and the second medium outlet is connected to the interior of the tower body, so that the second heat exchange medium can be introduced into the tower body to reduce the temperature of the material after reducing the temperature of the surrounding wall of the tower body, thereby reducing the subsequent cooling time of the material and reducing the production time of the material.

[0020] In some embodiments, the cooling assembly includes a second cooling component; the second cooling component is arranged around the outer peripheral side of the tower body and is used to accommodate a second heat exchange medium, and the second cooling component has a second medium inlet and a second medium outlet; along the movement direction of the material, the second medium inlet is located upstream of the second medium outlet, the second heat exchange medium is a dry gas, and the second medium outlet is connected to the interior of the tower body.

[0021] In the above technical solution, along the moving direction of the material, the second medium inlet is located upstream of the second medium outlet, so that after entering the cooling assembly from the second medium inlet, the second medium first contacts the area near the first air inlet and the nozzle. Since the area near the second air inlet and the nozzle has a higher temperature, the second heat exchange medium is in a state of lower temperature, which can better reduce the temperature of the area near the first air inlet and the nozzle, thereby reducing the risk of the material adhering to the wall of the tower body due to the high temperature of the wall of the tower body, thereby reducing the difficulty of manual cleaning. At the same time, as the temperature of the surrounding wall of the tower body away from the first air inlet and the nozzle gradually decreases, the temperature of the second heat exchange medium gradually increases, and the cooling capacity is weakened, thereby reducing the cooling capacity of the second heat exchange medium to the area away from the second air inlet and the nozzle tower body, thereby reducing the temperature difference of the surrounding wall of the tower body, thereby making the temperature of the surrounding wall of the tower body more uniform. At the same time, the second heat exchange medium is a dry gas, and the second medium outlet is connected to the inside of the tower body, so that the second heat exchange medium can be introduced into the tower body to reduce the temperature of the material after reducing the temperature of the surrounding wall of the tower body, thereby reducing the subsequent cooling time of the material and reducing the production time of the material.

[0022] In some embodiments, the tower body includes a first part and a second part arranged in sequence along the moving direction of the material; along the moving direction of the material, the inner diameter of the second part gradually decreases; the second medium outlet is used to provide the second heat exchange medium to the junction of the first part and the second part.

[0023] In the above technical solution, the second medium outlet is used to provide the second heat exchange medium to the junction of the first part and the second part, so that the second heat exchange medium can drive the material to move from the first part to the second part, thereby reducing the accumulation of the material at the junction of the first part and the second part.

[0024] In some embodiments, the second cooling component includes a second jacket; the second jacket is arranged outside the first part, the end of the second jacket away from the first air inlet is connected to the second part, and the inner circumference of the second jacket and the outer circumference of the first part are arranged to form the second medium outlet.

[0025] In the above technical solution, the inner circumference of the second jacket and the outer circumference of the first part are arranged to form a second medium outlet, so that the second medium outlet can be arranged around the junction of the first part and the second part, thereby further reducing the accumulation of materials at the junction of the first part and the second part.

[0026] In some embodiments, the second cooling component includes a plurality of fins, which are arranged at intervals along the circumference of the second jacket at the second medium outlet, and the fins are used to guide the second heat exchange medium to enter the second part at an angle to the moving direction of the material.

[0027] In the above technical solution, the fins enable the second heat exchange medium to enter the tower body at a specific angle and form a spiral downward airflow along the second part, so that the second heat exchange medium can be better mixed with the dry gas entering the tower body from the first air inlet, thereby quickly cooling the material.

[0028] In some embodiments, the spray drying equipment further comprises a second dehumidifier; the second dehumidifier is connected to the second medium inlet, the second dehumidifier is used to remove water vapor in the gas to form dry gas, and provide the second heat exchange medium to the second medium inlet.

[0029] In the above technical solution, water vapor in the gas is removed by the second dehumidifier to form dry gas, and dry gas is provided to the second medium inlet so that the dry gas serving as the second heat exchange medium reduces the temperature of the surrounding wall of the tower body, and facilitates the second heat exchange medium to enter the tower body to cool the material. The structure is simple and easy to implement.

[0030] In some embodiments, the second cooling component has a second flow channel for accommodating the second heat exchange medium, and the second flow channel is spirally arranged around the outer circumference of the tower body.

[0031] In the above technical solution, the second flow channel is spirally arranged around the outer circumference of the tower body, thereby increasing the length of the second flow channel relative to the straight second flow channel. On the one hand, the area for heat exchange between the second flow channel and the surrounding wall of the tower body is increased, thereby improving the ability of the first cooling component to control the temperature of the surrounding wall of the tower body. On the other hand, the movement time of the second heat exchange medium from the first medium inlet through the second flow channel to the first medium outlet is increased, thereby increasing the time for the second heat exchange medium to exchange heat with the surrounding wall of the tower body through the first cooling component, thereby improving the cooling effect of the second heat exchange medium on the surrounding wall of the tower body.

[0032] In some embodiments, the spray drying equipment further includes a storage device; the storage device is connected to the discharge port and is used to store the granular material.

[0033] In the above technical solution, the storage device is connected to the discharge port and is used to store granular materials to facilitate the collection of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A cross-sectional view of a first spray drying device provided for some embodiments of the present application;

[0036] Figure 2 A schematic diagram of the structure of a second spray drying device provided in some embodiments of the present application;

[0037] Figure 3 A schematic structural diagram of a third spray drying device provided in some embodiments of the present application;

[0038] Figure 4 A schematic structural diagram of a fourth spray drying device provided in some embodiments of the present application;

[0039] Figure 5 A schematic structural diagram of a fifth spray drying device provided in some embodiments of the present application;

[0040] Figure 6 A schematic structural diagram of a sixth type of spray drying equipment provided in some embodiments of the present application.

[0041] icon:

[0042] 100-spray drying equipment; 10-tower body; 10A-first part; 10B-second part; 11-first air inlet; 12-discharge port; 20-nozzle; 30-cooling assembly; 30A-jacket; 31-first cooling component; 311-first medium inlet; 312-first medium outlet; 31A-first jacket; 31B-first guide plate; 3101-first flow channel; 32-second cooling component; 321-second medium inlet; 3 22-second medium outlet; 32A-second jacket; 32B-second guide plate; 32C-fin; 3201-second flow channel; 33-partition; 40-first dehumidifier; 41-first blower; 42-heater; 421-second air inlet; 43-tee pipe; 44-first filter; 50-second dehumidifier; 51-second blower; 52-second filter; 60-storage device; 61-exhaust fan; N-movement direction of materials. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0045] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0048] The spray drying process is an efficient method for converting liquid materials into dry solid powders. The main principle is to spray the liquid material in an atomized form, and then contact it with high-temperature dry gas to evaporate the water in a short time to finally obtain dry powder.

[0049] The spray drying process requires spray drying equipment. During spray drying, atomized materials and high-temperature drying gas are generally added to the tower body of the spray drying equipment at the same time. Since the high-temperature drying gas will exchange heat with the surrounding wall of the tower body, the surrounding wall of the tower body will also have a higher temperature.

[0050] Taking the material as the binder of the separator of the battery cell as an example, the separator can be any known porous structure separator with good chemical stability and mechanical stability.

[0051] As an example, the material of the separator may include at least one of glass fiber, non-woven fabric, polyethylene, polypropylene and polyvinylidene fluoride. The separator may be a single-layer film or a multi-layer composite film. When the separator is a multi-layer composite film, the materials of each layer may be the same or different. The separator may be attached to the surface of the positive and negative electrodes by an adhesive.

[0052] The adhesive itself has strong viscosity when it is in a softened state at high temperature. The material dried in the tower body is sometimes driven by the drying gas to contact the inner wall of the tower, thereby being softened by the high temperature of the tower wall, causing the material to stick to the wall of the tower body, making it inconvenient to clean manually.

[0053] Based on the above considerations, in order to reduce the risk of granular materials adhering to the wall of the tower body due to the high temperature of the wall of the tower body, and thus reduce the difficulty of manual cleaning. The embodiment of the present application provides a spray drying device, including a tower body, a nozzle and a cooling assembly. The tower body is provided with a drying chamber, and the two ends of the tower body are respectively provided with a first air inlet and a material outlet; the nozzle is used to provide a mist material into the drying chamber; the first air inlet is used for supplying drying gas to enter the drying chamber, and the material outlet is used for supplying granular materials and drying gas to leave the drying chamber; wherein, the spray drying equipment also includes a cooling assembly, which is arranged around the outer peripheral side of the tower body and is used to adjust the temperature of the wall of the tower body.

[0054] In the spray drying equipment of this structure, the cooling component is arranged on the outer peripheral side of the tower body and is used to adjust the temperature of the wall of the tower body, so that the temperature of the peripheral wall of the tower body can be lowered by the cooling component, and the temperature of the peripheral wall of the tower body is made within a range that is not easy to soften the material, thereby reducing the risk of the dried material being softened by the temperature of the peripheral wall of the tower body after contacting the peripheral wall of the tower body, causing the material to stick to the inner peripheral surface of the tower body, thereby reducing the difficulty of manually cleaning the cavity wall of the drying chamber.

[0055] The spray drying equipment is described in detail below with reference to the accompanying drawings.

[0056] Please refer to Figure 1 , Figure 1A cross-sectional view of a spray drying device 100 provided in some embodiments of the present application. The embodiment of the present application provides a spray drying device 100, including a tower body 10, a nozzle 20 and a cooling assembly 30. The tower body 10 has a drying chamber, and the two ends of the tower body 10 respectively have a first air inlet 11 and a discharge port 12; the nozzle 20 is used to provide a mist material into the drying chamber; the first air inlet 11 is used for the drying gas to enter the drying chamber, and the discharge port 12 is used for the granular material and the drying gas to leave the drying chamber; wherein, the spray drying device 100 also includes a cooling assembly 30, which is arranged around the outer peripheral side of the tower body 10 and is used to adjust the temperature of the wall of the tower body 10.

[0057] The tower body 10 is a shell-shaped component used to provide a drying space in the spray drying equipment 100. It can be understood that the tower body 10 can confine the high-temperature drying gas inside the tower body 10 to reduce the rate at which the temperature of the high-temperature drying gas decreases, and allows the mist material to be fully in contact with the high-temperature drying gas in the tower body 10 to achieve rapid drying.

[0058] It is understandable that the tower body 10 may have various shapes. For example, the tower body 10 may be conical or cylindrical so as to control the high-temperature dry gas and materials to move more regularly.

[0059] For example, the tower body 10 can be made of metal material or high-temperature resistant inorganic material, so that the tower body 10 will not soften or melt when in contact with high-temperature drying gas, thereby providing a stable drying environment for the mist material.

[0060] The first air inlet 11 is an opening disposed at one end of the tower body 10 for allowing high-temperature dry gas to enter the tower body 10 .

[0061] The discharge port 12 is an opening provided at the other end of the tower body 10 for allowing the dried granular material and the drying gas to leave the interior of the tower body 10. For example, the discharge port 12 can be connected to a material collection device to facilitate the collection of the material.

[0062] The nozzle 20 is a structure for atomizing liquid materials into mist-like materials, and the nozzle 20 is connected to a storage device 60 for storing liquid materials. Exemplarily, the nozzle 20 can be a pressure nozzle, an air flow nozzle, a rotary nozzle, an ultrasonic nozzle, or the like.

[0063] In some embodiments, the spray head 20 and the first air inlet 11 may be located at the same end of the tower body 10 .

[0064] The cooling assembly 30 is a component that is disposed around the outer peripheral side of the tower body 10 along the circumferential direction of the tower body 10 and is capable of cooling the peripheral wall of the tower body 10 .

[0065] In some embodiments, the cooling assembly 30 may contain a heat exchange medium to adjust the temperature of the peripheral wall of the electric tower body 10, so as to reduce the temperature of the peripheral wall of the tower body 10. The heat exchange medium here may be a fluid (liquid) or a gas.

[0066] In some embodiments, the cooling assembly 30 may be a water-cooled plate, and the heat exchange medium may be water. The wall of the tower body 10 may be cooled by introducing water at a relatively low temperature.

[0067] In some embodiments, the heat exchange medium is gas, and the wall of the tower body 10 can be cooled by introducing gas with a lower temperature.

[0068] In this embodiment, the cooling component 30 is arranged on the outer peripheral side of the tower body 10 and is used to adjust the temperature of the wall of the tower body 10, so that the temperature of the peripheral wall of the tower body 10 can be reduced by the cooling component 30, and then the temperature of the peripheral wall of the tower body 10 is within a range that is not easy to soften the material, thereby reducing the risk of the dried material being softened by the temperature of the peripheral wall of the tower body 10 after contacting the peripheral wall of the tower body 10, causing the material to stick to the inner peripheral surface of the tower body 10, thereby reducing the difficulty of manually cleaning the cavity wall of the drying chamber.

[0069] According to some embodiments of this application, please refer to Figure 2 , Figure 2 A schematic diagram of the structure of a second spray drying device 100 provided in some embodiments of the present application. The cooling assembly 30 includes a first cooling component 31, which is arranged around the outer peripheral side of the tower body 10 and is used to accommodate a first heat exchange medium. The first cooling component 31 has a first medium inlet 311 and a first medium outlet 312; along the moving direction N of the material, the first medium inlet 311 is located upstream of the first medium outlet 312.

[0070] The first cooling component 31 is a portion of the cooling assembly 30 that is disposed around the outer circumference of the tower body 10 .

[0071] Illustratively, the first heat exchange medium may be water or gas.

[0072] The moving direction N of the material refers to the main direction of the material moving in the tower body 10 , which can be understood as the direction from the nozzle 20 to the discharge port 12 .

[0073] In some embodiments, along the moving direction N of the material, the first cooling component 31 is located downstream of the spray head 20 .

[0074] The first medium inlet 311 is an opening on the first cooling component 31 for the first heat exchange medium to enter the first cooling component 31 .

[0075] The first medium outlet 312 is an opening on the first cooling component 31 for the first heat exchange medium to flow out of the first cooling component 31 .

[0076] In this embodiment, along the moving direction N of the material, the first medium inlet 311 is located upstream of the first medium outlet 312, so that after entering the cooling assembly 30 from the first medium inlet 311, the material first contacts the area near the first air inlet 11 and the nozzle 20. Since the area near the first air inlet 11 and the nozzle 20 has a higher temperature, the first heat exchange medium is in a state of lower temperature, which can better reduce the temperature of the area near the first air inlet 11 and the nozzle 20, thereby reducing the risk of the material adhering to the wall of the tower body 10 due to the high temperature of the wall of the tower body 10, thereby reducing the difficulty of manual cleaning. At the same time, as the temperature of the surrounding wall of the tower body 10 away from the first air inlet 11 and the nozzle 20 gradually decreases, the temperature of the first heat exchange medium gradually increases, and the cooling capacity is weakened, thereby reducing the cooling capacity of the first heat exchange medium to the area of ​​the tower body 10 away from the first air inlet 11 and the nozzle 20, thereby reducing the temperature difference of the surrounding wall of the tower body 10, thereby making the temperature of the surrounding wall of the tower body 10 more uniform.

[0077] According to some embodiments of this application, please refer to Figure 2 The spray drying equipment 100 also includes a first dehumidifier 40 and a heater 42; the heater 42 has a second air inlet 421 and an air outlet connected to the first air inlet 11, the first dehumidifier 40 is used to remove water vapor in the gas to form dry gas, and provide dry gas to the second air inlet 421, and the heater 42 is used to provide heat to the dry gas.

[0078] The first dehumidifier 40 is a device for removing water vapor in the gas. For example, the first dehumidifier 40 may include a condenser, an evaporator and a fan. The fan is used to draw indoor air through the condenser. The condenser is used to reduce the temperature of the gas passing through the condenser so that the water vapor in the gas is liquefied to adhere to the surface of the condenser, thereby removing the water vapor in the gas to form dry gas. The evaporator and the condenser cooperate with each other to circulate the refrigerant in the system, taking away the heat in the air, so that the temperature of the gas is reduced.

[0079] In some embodiments, the spray drying equipment 100 further includes a first blower 41 , which is used to connect the first dehumidifier 40 and the second air inlet 421 of the heater 42 , and to drive the dry gas generated by the first dehumidifier 40 to move toward the second air inlet 421 .

[0080] The heater 42 is a device for providing heat to the drying gas to increase the temperature of the drying gas. For example, the heater 42 can be an electric heating wire or a hot air furnace.

[0081] In some embodiments, the spray drying apparatus 100 further includes a first filter 44 , which is disposed between the heater 42 and the tower body 10 to filter impurities in the drying air moving from the heater 42 to the tower body 10 .

[0082] In this embodiment, water vapor in the gas is removed by the first dehumidifier 40 to form dry gas, and heat is provided to the dry gas by the heater 42 to form high-temperature dry gas, so as to dry the atomized material. The structure is simple and easy to implement.

[0083] According to some embodiments of this application, please refer to Figure 2 The first heat exchange medium is dry gas, and the first medium outlet 312 is connected to the second air inlet 421 .

[0084] In some embodiments, the spray drying apparatus 100 further includes a three-way pipe 43 , and three ports of the three-way pipe 43 are respectively connected to the first dehumidifier 40 , the first medium outlet 312 , and the heater 42 .

[0085] In this embodiment, the first heat exchange medium is a dry gas, and the first medium outlet 312 is connected to the second air inlet 421, so that the first heat exchange medium can be heated by the heater 42 for drying the mist material after its own temperature is increased due to the surrounding wall of the cooling tower body 10, thereby rationally utilizing the heat energy carried by the first heat exchange medium after leaving the cooling component 30 from the first medium outlet 312, thereby reducing the energy consumption of the spray drying equipment 100.

[0086] According to some embodiments of this application, please refer to Figure 2 The spray drying device 100 further includes a second dehumidifier 50 ; the second dehumidifier 50 is connected to the first medium inlet 311 , and the second dehumidifier 50 is used to remove water vapor in the gas to form dry gas, and provide dry gas to the first medium inlet 311 .

[0087] The second dehumidifier 50 is a device for removing water vapor in gas.

[0088] In some embodiments, the spray drying equipment 100 further includes a second blower 51 , which is used to connect the second dehumidifier 50 and the first medium inlet 311 of the first cooling component 31 , and to drive the dry gas generated by the second dehumidifier 50 to move toward the first medium inlet 311 .

[0089] In some embodiments, the spray drying apparatus 100 further includes a second filter 52 disposed between the second dehumidifier 50 and the first cooling part 31 to filter impurities in the dry air moving from the second dehumidifier 50 to the first cooling part 31 .

[0090] In this embodiment, water vapor in the gas is removed by the second dehumidifier 50 to form dry gas, and the dry gas is provided to the first medium inlet 311 so that the dry gas serving as the first heat exchange medium reduces the temperature of the peripheral wall of the tower body 10. The structure is simple and easy to implement.

[0091] According to some embodiments of this application, please refer to Figure 3 , Figure 3 The schematic diagram of the structure of the third spray drying device 100 provided in some embodiments of the present application is as follows: The first cooling component 31 has a first flow channel 3101 for accommodating a first heat exchange medium, and the first flow channel 3101 is spirally wound around the outer circumference of the tower body 10 .

[0092] The first flow channel 3101 refers to a portion that can accommodate the first heat exchange medium and allow the first heat exchange medium to flow.

[0093] In some embodiments, the first cooling component 31 may be a profile pipe, and the first flow channel 3101 is disposed in the profile pipe and spirally wound around the outer circumference of the tower body 10 along with the profile pipe.

[0094] In some embodiments, the first cooling component 31 includes a first jacket 31A and a first guide plate 31B, the first jacket 31A is sleeved outside the tower body 10, the first medium inlet 311 and the first medium outlet 312 are respectively arranged on the outer surface of the first jacket 31A, and the guide plate is spirally arranged between the inner circumference of the first jacket 31A and the outer circumference of the tower body 10 to separate the area between the inner surface of the first jacket 31A and the outer surface of the tower body 10 into a first flow channel 3101 spirally arranged around the outer circumference of the tower body 10.

[0095] To facilitate the display of the range of the first flow channel 3101, please refer to Figure 3 In the figure, the range where the first flow channel 3101 and the first guide plate 31B are located is marked by dotted lines.

[0096] In this embodiment, the first flow channel 3101 is spirally arranged around the outer periphery of the tower body 10, thereby increasing the length of the first flow channel 3101 relative to the linear first flow channel 3101. On the one hand, the area for heat exchange between the first flow channel 3101 and the surrounding wall of the tower body 10 is increased, thereby improving the ability of the first cooling component 31 to control the temperature of the surrounding wall of the tower body 10. On the other hand, the movement time of the first heat exchange medium from the first medium inlet 311 through the first flow channel 3101 to the first medium outlet 312 is increased, thereby increasing the time for the first heat exchange medium to exchange heat with the surrounding wall of the tower body 10 through the first cooling component 31, thereby improving the cooling effect of the first heat exchange medium on the surrounding wall of the tower body 10.

[0097] According to some embodiments of this application, please refer to Figure 3The cooling assembly 30 also includes a second cooling component 32; the second cooling component 32 is used to accommodate a second heat exchange medium, and the second cooling component 32 has a second medium inlet 321 and a second medium outlet 322; along the material movement direction N, the second medium inlet 321 is located upstream of the second medium outlet 322, and the first cooling component 31 is located upstream of the second cooling component 32.

[0098] The second cooling component 32 may be another portion of the cooling assembly 30 disposed around the outer circumference of the tower body 10 .

[0099] Illustratively, the second heat exchange medium may be water or gas.

[0100] The second medium inlet 321 is an opening on the second cooling component 32 for the second heat exchange medium to enter the second cooling component 32 .

[0101] The second medium outlet 322 is an opening on the second cooling component 32 for the second heat exchange medium to flow out of the second cooling component 32 .

[0102] In this embodiment, along the movement direction N of the material, the first cooling component 31 is located upstream of the second cooling component 32. Therefore, compared with the situation where a single cooling component is used to cool the peripheral wall of the entire tower body 10, the risk of excessively high temperature of the peripheral wall of the tower body 10, which is caused by too long time for the heat exchange medium in the single cooling component to exchange heat with the peripheral wall of the tower body 10 through the cooling component, resulting in too small a temperature difference between the heat exchange medium and the peripheral wall of the tower body 10, and resulting in too little cooling of the peripheral wall of the tower body 10, can be reduced. This can further reduce the risk of material sticking to the inner circumference of the tower body 10 due to excessively high temperature of the peripheral wall of the tower body 10.

[0103] According to some embodiments of the present application, the second heat exchange medium is dry gas, and the second medium outlet 322 is connected to the interior of the tower body 10 .

[0104] In some embodiments, the second medium outlet 322 is opened on the inner circumference of the tower body 10 to facilitate the second heat exchange medium to enter the interior of the tower body 10 .

[0105] In this embodiment, the second heat exchange medium is dry gas, and the second medium outlet 322 is connected to the interior of the tower body 10, so that the second heat exchange medium can be introduced into the tower body 10 to reduce the temperature of the material after reducing the temperature of the surrounding wall of the tower body 10, thereby reducing the subsequent cooling time of the material and reducing the production time of the material.

[0106] According to some embodiments of this application, please refer to Figure 5The cooling assembly 30 includes a second cooling component 32; the second cooling component 32 is used to accommodate a second heat exchange medium, and the second cooling component 32 has a second medium inlet 321 and a second medium outlet 322; along the movement direction N of the material, the second medium inlet 321 is located upstream of the second medium outlet 322, the second heat exchange medium is dry gas, and the second medium outlet 322 is connected to the interior of the tower body 10.

[0107] In this embodiment, along the moving direction N of the material, the second medium inlet 321 is located upstream of the second medium outlet 322, so that after entering the cooling assembly 30 from the second medium inlet 321, it first contacts the area near the first air inlet 11 and the nozzle 20. Since the area is near the second air inlet 421 and the nozzle 20, the temperature is relatively high. At this time, the second heat exchange medium is in a relatively low temperature state, which can better reduce the temperature of the area near the first air inlet 11 and the nozzle 20, thereby reducing the risk of the material adhering to the wall of the tower body due to the high temperature of the wall of the tower body, thereby reducing the difficulty of manual cleaning. At the same time, as the temperature of the surrounding wall of the tower body 10 away from the first air inlet 11 and the nozzle 20 gradually decreases, the temperature of the second heat exchange medium gradually increases, and the cooling capacity is weakened, thereby reducing the cooling capacity of the second heat exchange medium to the area of ​​the tower body 10 away from the second air inlet 421 and the nozzle 20, thereby reducing the temperature difference of the surrounding wall of the tower body 10, thereby making the temperature of the surrounding wall of the tower body 10 more uniform. At the same time, the second heat exchange medium is dry gas, and the second medium outlet 322 is connected to the inside of the tower body 10, so that the second heat exchange medium can be introduced into the tower body 10 to reduce the temperature of the material after reducing the temperature of the surrounding wall of the tower body 10, thereby reducing the subsequent cooling time of the material and reducing the production time of the material.

[0108] According to some embodiments of this application, please refer to Figure 3 The tower body 10 includes a first part 10A and a second part 10B arranged in sequence along the material movement direction N; along the material movement direction N, the inner diameter of the second part 10B gradually decreases; the second medium outlet 322 is used to provide the second heat exchange medium to the junction of the first part 10A and the second part 10B.

[0109] The first part 10A and the second part 10B are two parts of the tower body 10 arranged in sequence along the axis thereof. The first part 10A may be directly connected or indirectly connected via other structural members.

[0110] The "junction of the first part 10A and the second part 10B" refers to the transition area where the tower body 10 switches from the inner wall of the first part 10A to the inner wall of the second part 10B. In the embodiment where the first part 10A and the second part 10B are directly connected, the junction of the first part 10A and the second part 10B is the junction line. In the embodiment where the first part 10A and the second part 10B are indirectly connected, the junction of the first part 10A and the second part 10B is the junction line, which is the area between the inner wall of the first part 10A and the inner wall of the second part 10B.

[0111] In some embodiments, the discharge port 12 is located at an end of the second portion 10B away from the second medium outlet 322 .

[0112] It can be understood that when the drying gas entering the tower body 10 from the first air inlet 11 moves from the first part 10A to the second part 10B, the inner diameter of the second part 10B gradually decreases, so that the drying gas generates a vortex at the junction of the first part 10A and the second part 10B, which causes part of the material to stay at the junction of the first part 10A and the second part 10B and adhere to the inner wall of the first part 10A and the second part 10B near the junction.

[0113] In this embodiment, the second medium outlet 322 is used to provide the second heat exchange medium to the junction of the first part 10A and the second part 10B, so that the second heat exchange medium can drive the material to move from the first part 10A to the second part 10B, thereby reducing the accumulation of the material at the junction of the first part 10A and the second part 10B.

[0114] According to some embodiments of this application, please refer to Figure 3 , and please refer to Figure 6 , Figure 6 The schematic diagram of the structure of the sixth spray drying device 100 provided in some embodiments of the present application. The second cooling component 32 includes a second jacket 32A; the second jacket 32A is sleeved outside the first part 10A, and one end of the second jacket 32A away from the first air inlet 11 is connected to the second part 10B, and the inner circumference of the second jacket 32A and the outer circumference of the first part 10A are surrounded to form a second medium outlet 322.

[0115] In some embodiments, the cooling assembly 30 includes a jacket 30A and a partition 33. The jacket 30A is sleeved outside the first part 10A. The jacket 30A includes a first jacket 31A and a second jacket 32A that are coaxially arranged and sequentially connected. The partition 33 is arranged between the jacket 30A and the first part 10A in the radial direction of the tower body 10, and the partition 33 is located between the first jacket 31A and the second jacket 32A in the axial direction of the tower body 10. The first jacket 31A, the partition 33, and a portion of the outer surface of the first part 10A form a space for accommodating a first heat exchange medium, and the second jacket 32A, the partition 33, and another portion of the outer surface of the first part 10A form a space for accommodating a second heat exchange medium.

[0116] To facilitate the display of the range of the partition 33, please refer to Figure 3 In the figure, the range where the partition 33 is located is marked with a dotted line. It should be noted that the dotted line is only for the convenience of showing the range of the partition 33.

[0117] In this embodiment, the inner circumference of the second jacket 32A and the outer circumference of the first part 10A are arranged to form a second medium outlet 322, so that the second medium outlet 322 can be arranged around the junction of the first part 10A and the second part 10B, thereby further reducing the accumulation of materials at the junction of the first part 10A and the second part 10B.

[0118] According to some embodiments of this application, please refer to Figure 6 The second cooling component 32 includes a plurality of fins 32C, which are arranged at intervals along the circumference of the second jacket 32A at the second medium outlet 322, and the fins 32C are used to guide the second heat exchange medium to enter the second part 10B at an angle to the moving direction N of the material.

[0119] The fin 32C refers to a thin sheet or structure provided on the inner surface of the second jacket 32A. The fin 32C is used to guide the second heat exchange medium to enter the tower body 10 at a specific angle.

[0120] For example, the fin 32C may be connected to the second jacket 32A and / or the first portion 10A by welding, screwing, or the like.

[0121] To facilitate the display of the range of fin 32C, please refer to Figure 6 In the figure, the range where the fin 32C is located is marked with a dotted line.

[0122] In this embodiment, the fins 32C enable the second heat exchange medium to enter the tower body 10 at a specific angle and form a spiral downward airflow along the second portion 10B, so that the second heat exchange medium can be better mixed with the dry gas entering the tower body 10 from the first air inlet 11, thereby quickly cooling the material.

[0123] According to some embodiments of this application, please refer to Figure 4 and Figure 5 The spray drying equipment 100 further includes a second dehumidifier 50 ; the second dehumidifier 50 is connected to the second medium inlet 321 , and the second dehumidifier 50 is used to remove water vapor in the gas to form dry gas, and provide a second heat exchange medium to the second medium inlet 321 .

[0124] In this embodiment, water vapor in the gas is removed by the second dehumidifier 50 to form dry gas, and dry gas is provided to the second medium inlet 321, so that the dry gas serving as the second heat exchange medium reduces the temperature of the surrounding wall of the tower body 10, and facilitates the second heat exchange medium to enter the tower body 10 to cool the material. The structure is simple and easy to implement.

[0125] According to some embodiments of this application, please refer to Figure 3 The second cooling component 32 has a second flow channel 3201 for accommodating a second heat exchange medium. The second flow channel 3201 is spirally wound around the outer circumference of the tower body 10 .

[0126] In some embodiments, the second cooling component 32 includes a second jacket 32A and a second guide plate 32B, the second jacket 32A is sleeved on the outside of the tower body 10, the second medium inlet 321 and the second medium outlet 322 are respectively arranged on the outer surface of the second jacket 32A, and the guide plate is spirally arranged between the inner circumference of the second jacket 32A and the outer circumference of the tower body 10 to separate the area between the inner surface of the second jacket 32A and the outer surface of the tower body 10 into a second flow channel 3201 spirally arranged around the outer circumference of the tower body 10.

[0127] To facilitate the display of the range of the second flow channel 3201, please refer to Figure 3 In the figure, the range of the second flow channel 3201 and the second guide plate 32B is marked with dotted lines. It should be noted that the dotted lines are only for the convenience of showing the range of the second flow channel 3201 and the second guide plate 32B, and do not represent any physical meaning.

[0128] In this embodiment, the second flow channel 3201 is spirally arranged around the outer periphery of the tower body 10, thereby increasing the length of the second flow channel 3201 relative to the linear second flow channel 3201. On the one hand, the area for heat exchange between the second flow channel 3201 and the surrounding wall of the tower body 10 is increased, thereby improving the ability of the first cooling component 31 to control the temperature of the surrounding wall of the tower body 10. On the other hand, the movement time of the second heat exchange medium from the first medium inlet 311 through the second flow channel 3201 to the first medium outlet 312 is increased, thereby increasing the time for the second heat exchange medium to exchange heat with the surrounding wall of the tower body 10 through the first cooling component 31, thereby improving the cooling effect of the second heat exchange medium on the surrounding wall of the tower body 10.

[0129] According to some embodiments of this application, please refer to Figure 4 The spray drying equipment 100 further includes a storage device 60; the storage device 60 is communicated with the discharge port 12 and is used to store granular materials.

[0130] The storage device 60 is a device for collecting and temporarily storing granular materials. For example, the storage device may be a dust collector.

[0131] In some embodiments, the storage device is connected to an exhaust fan 61, and the exhaust fan 61 is used to guide the dry gas entering the storage device from the discharge port 12 to leave the storage device.

[0132] In this embodiment, the storage device 60 is communicated with the discharge port 12 and is used to store granular materials to facilitate the collection of the materials.

[0133] According to some embodiments of this application, please refer to Figure 1-Figure 4The embodiment of the present application provides a spray drying device 100, including a tower body 10, a nozzle 20 and a cooling assembly 30. The tower body 10 has a drying chamber, and the two ends of the tower body 10 have a first air inlet 11 and a discharge port 12 respectively; the nozzle 20 is used to provide a mist material into the drying chamber; the first air inlet 11 is used to provide high-temperature drying gas to enter the drying chamber, and the discharge port 12 is used to provide granular materials and drying gas to leave the drying chamber; wherein, the spray drying device 100 also includes a cooling assembly 30, which is arranged around the outer peripheral side of the tower body 10 and is used to adjust the temperature of the wall of the tower body 10. The cooling assembly 30 includes a first cooling component 31, which is arranged around the outer peripheral side of the tower body 10 and is used to accommodate a first heat exchange medium, and the first cooling component 31 has a first medium inlet 311 and a first medium outlet 312; along the moving direction N of the material, the first medium inlet 311 is located upstream of the first medium outlet 312. The spray drying device 100 further includes a first dehumidifier 40 and a heater 42; the heater 42 has a second air inlet 421 and an air outlet connected to the first air inlet 11, the first dehumidifier 40 is used to remove water vapor in the gas to form dry gas, and provide dry gas to the second air inlet 421, and the heater 42 is used to provide heat to the dry gas. The first heat exchange medium is dry gas, and the first medium outlet 312 is connected to the second air inlet 421. The spray drying device 100 further includes a second dehumidifier 50; the second dehumidifier 50 is connected to the first medium inlet 311, and the second dehumidifier 50 is used to remove water vapor in the gas to form dry gas, and provide dry gas to the first medium inlet 311. The first cooling component 31 has a first flow channel 3101 for accommodating the first heat exchange medium, and the first flow channel 3101 is spirally wound around the outer periphery of the tower body 10. The cooling assembly 30 further includes a second cooling component 32; the second cooling component 32 is arranged around the outer peripheral side of the tower body 10 and is used to accommodate the second heat exchange medium. The second cooling component 32 has a second medium inlet 321 and a second medium outlet 322; along the moving direction N of the material, the second medium inlet 321 is located upstream of the second medium outlet 322, and the first cooling component 31 is located upstream of the second cooling component 32. The second heat exchange medium is dry gas, and the second medium outlet 322 is connected to the inside of the tower body 10. The tower body 10 includes a first part 10A and a second part 10B arranged in sequence along the moving direction N of the material; along the moving direction N of the material, the inner diameter of the second part 10B gradually decreases; the second medium outlet 322 is used to provide the second heat exchange medium to the junction of the first part 10A and the second part 10B. The second cooling component 32 includes a second jacket 32A; the second jacket 32A is sleeved outside the first part 10A, and the end of the second jacket 32A away from the first air inlet 11 is connected to the second part 10B, and the inner circumference of the second jacket 32A and the outer circumference of the first part 10A are surrounded to form a second medium outlet 322.The second cooling part 32 includes a plurality of fins 32C; the fins 32C are arranged at the second medium outlet 322 along the circumferential interval of the second jacket 32A, and the fins 32C are used to guide the second heat exchange medium to enter the second part 10B at an angle with the moving direction N of the material. The spray drying equipment 100 also includes a second dehumidifier 50; the second cooling part 32 has a second flow channel 3201 for accommodating the second heat exchange medium, and the second flow channel 3201 is spirally wound around the outer circumference of the tower body 10. The second dehumidifier 50 is connected to the second medium inlet 321, and the second dehumidifier 50 is used to remove water vapor in the gas to form dry gas, and provide the first heat exchange medium to the first medium inlet 311 and the second heat exchange medium to the second medium inlet 321. The spray drying equipment 100 also includes a storage device 60; the storage device 60 is connected to the discharge port 12 and is used to store granular materials.

[0134] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0135] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spray drying device, characterized in that: include: A tower body having a drying chamber therein, and two ends of the tower body respectively having a first air inlet and a material outlet; A nozzle, used for providing a mist of material into the drying chamber; The first air inlet is used for supplying drying gas into the drying chamber, and the discharge port is used for supplying the granular material and drying gas out of the drying chamber; Wherein, the spray drying equipment further comprises a cooling component, which is arranged around the outer peripheral side of the tower body and is used to adjust the temperature of the wall of the tower body.

2. The spray drying device according to claim 1, characterized in that The cooling assembly comprises: A first cooling component, arranged around the outer circumference of the tower body, for accommodating a first heat exchange medium, wherein the first cooling component has a first medium inlet and a first medium outlet; Along the moving direction of the material, the first medium inlet is located upstream of the first medium outlet.

3. The spray drying device according to claim 2, characterized in that The spray drying equipment also includes: First Dehumidifier; A heater having a second air inlet and an air outlet connected to the first air inlet, the first dehumidifier is used to remove water vapor in the gas to form dry gas and provide dry gas to the second air inlet, and the heater is used to provide heat to the dry gas.

4. The spray drying device according to claim 3, characterized in that The first heat exchange medium is dry gas, and the first medium outlet is communicated with the second gas inlet.

5. The spray drying device according to claim 4, characterized in that The spray drying equipment also includes: The second dehumidifier is communicated with the first medium inlet, and is used for removing water vapor in the gas to form dry gas, and providing the dry gas to the first medium inlet.

6. The spray drying device according to claim 2, characterized in that The first cooling component has a first flow channel for accommodating the first heat exchange medium, and the first flow channel is spirally wound around the outer circumference of the tower body.

7. The spray drying device according to claim 2, characterized in that The cooling assembly also includes: A second cooling component is arranged around the outer peripheral side of the tower body and is used to accommodate a second heat exchange medium. The second cooling component has a second medium inlet and a second medium outlet; Along the moving direction of the material, the second medium inlet is located upstream of the second medium outlet, and the first cooling component is located upstream of the second cooling component.

8. The spray drying device according to claim 7, characterized in that The second heat exchange medium is dry gas, and the second medium outlet is communicated with the interior of the tower body.

9. The spray drying apparatus according to claim 1, characterized in that The cooling assembly comprises: A second cooling component is arranged around the outer peripheral side of the tower body and is used to accommodate a second heat exchange medium. The second cooling component has a second medium inlet and a second medium outlet; Along the moving direction of the material, the second medium inlet is located upstream of the second medium outlet, the second heat exchange medium is dry gas, and the second medium outlet is communicated with the interior of the tower body.

10. The spray drying device according to claim 8 or 9, characterized in that: The tower body comprises a first part and a second part which are arranged in sequence along the moving direction of the material; Along the moving direction of the material, the inner diameter of the second part gradually decreases; The second medium outlet is used to provide the second heat exchange medium to the junction between the first part and the second part.

11. The spray drying apparatus according to claim 10, characterized in that The second cooling component comprises: The second jacket is sleeved outside the first part, one end of the second jacket away from the first air inlet is connected to the second part, and the inner circumference of the second jacket and the outer circumference of the first part are surrounded to form the second medium outlet.

12. The spray drying apparatus according to claim 11, characterized in that The second cooling component comprises: A plurality of fins are arranged at intervals along the circumference of the second jacket at the second medium outlet, and the fins are used to guide the second heat exchange medium to enter the second part at an angle with the moving direction of the material.

13. The spray drying apparatus according to claim 10, characterized in that Spray drying equipment also includes: The second dehumidifier is communicated with the second medium inlet, and is used for removing water vapor in the gas to form dry gas, and providing the dry gas to the second medium inlet.

14. The spray drying apparatus according to claim 9, characterized in that The second cooling component has a second flow channel for accommodating the second heat exchange medium, and the second flow channel is spirally wound around the outer circumference of the tower body.

15. The spray drying apparatus according to claim 1, characterized in that The spray drying equipment also includes: A storage device is communicated with the discharge port and is used for storing the granular material.

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