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Spin Flash Dryers: INR   0 INR  0
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Spin Flash Dryers:

A spin flash dryer produces powder from feed, which is viscous or gelatinous in nature, paste or filter cake. The two step process involves disintegration of the feed and drying of the disintegrated feed. Depending upon the nature of the feed material, conventional arm design could be used for crystalline, non-sticky material or We specially engineered rotating spin design disintegrator could be used to handle sticky and gelatinous materials.  The disintegrated material is brought in contact with the hot drying media, which dries the particle and also pneumatically conveys it for separation in a cyclone or bag filter.  A product clarifier ensures desired size and the dried particles only leave the drying chamber.  High solid contents make the spin flash drier a very economical drying proposition.  Spin flash dryer is a easy process for drying Filter Cakes, Pastes and high Viscous liquid.  Advantages :  Material is directly fed from filter press to dryer. Less drying time hence less labour handling and quick production. Less electricity load Space is 1/3 that of Spray dryer Various product range. Energy consumption saving. Fuel consumption saving. Influence of heat on heat sensitive products is remarkably low even at high temperature. Lump breaker with variable speed feed screw feeder for non clogging of feed. Only two operators are required to operate the plant instead of number of labourers in conventional drying system. The environmental conditions remains clean. THE PROCESS : The product is fed to the feed Agitator which is connected to a variable speed screw conveyor and conveyed to the Spin flash chamber in a rated capacity. The air is heated by passing over indirect fired hot air generator. The material come to the spin flash chamber get disintegrated between the rotating spins and simultaneously dried within the hot air media. Dried product is collected from the bottom of bag filter. A separate control panel mounted with instruments is also provided. The process is displayed by MIMIC diagram on control panel. The material of construction of equipment depends on the product to be dried. The advantage of the system is that it can be operated at high temperature for non sensitive products. See More-

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Vibrated Fluid Bed Dryers: INR   0 INR  0
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Vibrated Fluid Bed Dryers:

Vibratory Fluidized Bed (VFB) is another type of fluidized bed where the mechanical vibration, enhance the performance of fluidization process. Since the first discovery of vibratory fluidized bed, its vibration properties proves to be more efficient in dealing with fine particles which appears to be very difficult to achieve with normal fluidized bed. Even though numerous publications and its popularity in industrial applications, the knowledge about vibratory dynamics and properties are very limited. Future research and development are needed to further improve this technology to bring it to another level. Standard type of vibratory fluidized dryer consist of vibrating tray conveyor where hot gases from the chamber will flow through the holes within the tray and come in contact with the materials to be dried. The tray area is big enough to tolerate constant flow of material through the bed and passed along the deck with a low depth on the tray. The vibrations to the deck are directed in vertical component to assist in fluidization of the material whereas the horizontal component of the vibration, support in transporting materials along the tray. Some of the advantages of vibratory fluidized beds include: Continuous drying throughout the unit. Handle products with a wide range of particle size and shape. Minimal fluidization velocity and pressure drop due to the vibration energy being transferred along the bed. Increase efficiency of gas to solid contact. Mechanical vibration enhances homogeneity and stability of fluidized bed layers. Easier to control the residence time distribution of processed material by manipulating the intensity of amplitude and frequency of vibration. Limitations of vibratory fluidized bed are as follow The inlet air temperature to the dryer process is limited. Climate condition can affect the unit’s thermal efficiency. Build-up of local expansion region lead to unstable behavior to the bed structure

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