Daesung machinery Co.,Ltd has been developing, producing and exporting multi-functional specialty system such as Fluidized Bed Dryer, vibrating feeder, crusher, bulk powder handling process, chemical plant and so on.
Daesung stationary fluidzed bed drying system is a most efficient equipment for drying and cooling of crystals, granules powders. The benefit is as below.
● High conductivity ● Enable to handling large capacity compared with short retention time ● Easy to maintenance ● Uniformed dry and cooling efficiency.
Daesung FBD Series enable to apply continuos type and batch type,and use hot wind,mixed gas,solvent vapours. It operations pilot test for making most suitable fluidize bed.
Continuous Drying & Uniformed Dry Efficiency
It can be applied to continuative process by continuous the raw material supply and quantitative discharge using vibration conveying. And it makes fluidized bed layers by supplying hot air and cold air from the low part of perforated plate. By forming proper fluidized layers, it is possible to keep uniform and high drying efficiency.
Economic Equipment
All necessary process steps can be combined for an optimum result. The final product is generated directly from pastes, In case of already existing general stationary fluidized bed dryer, transportation air should be supplied additionally besides drying air needed for dry, because it has to be designed to carry the products by hot air. Therefore more air should be supplied than actually needed air. Because of additional un-exchanged hot air due to above reason, exhausted air temperature rises high. The amount of exhausted air is pretty bigger, so the final applications such as dust collector and induced draft fan comes bigger more than needed. In vibrating mode, the products can be conveyed using the power of vibration. In this way, it is possible to supply only needed amount of drying air and minimize capacity of the final application more than 60%, which gains great efficiency.
Below are listed some materials which have been Experience table successfully processed in our fluid beds
Purpose of all granulation processes is to generate a grain with defined structure, shape, size and composition (quality)as requested and specified. Original material for these processes can be
● powders or fibers ● suspensions ● pastes ● solutions ● molten materials or a mixture thereof.
Drying of small moisture droplets on the surface of already existing granules in fluid bed units(spray granulation) becomes among all known granulation processes more and more importance.
The process
Spray granulation and - dry can be described simplified as follows: The primary product(paste, suspension, solution) is sprayed directly through a special nozzle into the fluidized layer. The liquid droplets, as they are formed through spraying, hit onto an already existing granule,a germ particle, with varying penetration depth into the fluidized layer. According to different adhesive forces the droplet will cover the "germ" in a thin layer. The solvent(most of the times water) evaporates utilizing the energy content of the fluidizationmedia, the dry matter stays on the surface of the germ-granule. This leads to the familiar growing of the granuals in form of layers, "hulls". Statistically, based on an identical residence time of each particle in the fluidized layer(an "ideal" vessel), all germs will be met by the same amount of liquid and show the same growing rate. Selection of spraying nozzles, laying down operation parameters and construction design, especially that of the air distribution plate, are determined by the product itself, characteristic of the primary product and requirements on the final product.
Process advantage
All necessary process steps can be combined for an optimum result. The final product is generated directly from pastes, suspensions or solutions. The growing of the granules always is connected to a drying process. DAESUNG has developed for this application a special, continuous operating dryer / cooler. Its main use is in the mining, salt, food, feed and pharmaceutical industries. Classical process lines, combining a number of basic processes such as evaporation, crystallization, mechanical dewatering and thermal drying are replaced with only one piece of equipment. Reducing the number of equipment greatly cutting back on efforts for capital, operating and personnel costs and at the same time improves product quality.
