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A drying floor system manufactured from plate steel that is laser cut, folded and then bolted together on site. This system is strong enough for heavy loaders to drive on without damaging the floor. No welding is required, the system simply bolts together into modular sections. The drying floor can be easily designed to fit any size of shed.
A unique feature is the ease of cleaning. Simply close off all but 1 section to divert the air down the section you would like to clean. Then remove the front horizontal drying floor plate to allow the debris to be blown through.
The laser cut slots are cut to a high tolerance and can be adjusted to suit the type of fuel / grain, etc. that you want to dry to minimise material falling through the slots.
A belt dryer takes in wet mechanically dewatered product is continuously fed in top of the dryer through a distribution hopper that separates the product evenly and distributes it on the belt. Products such as sewage sludge must be granulated first in order to increase the surface area of the material to obtain more efficient heat transfer and evaporation.
A perforated stainless or nylon belt transports the product gently through the dryer to avoid friction of the product and thereby reducing dust explosion risk.
As the product passes through the successive chambers, the internal air temperature increases progressively heating up the product to the desired temperature (approximately 70-130°C). At the end of the top belt the product transfers to the second belt where the evaporation process is completed. The product is cooled down as it passes back to the exit of the dryer. The temperatures inside the dryer chambers are constantly monitored, these measurements automatically control the speed of the belt and the feeding device, and this gives the most efficient drying time and consistent quality of product.
Product enters the top of the dryer column and flows to the discharge over conical, inverted V-shaped air ducts arranged in an alternating pattern. During the process the product is continuously mixed and the hot air from the burner is evenly distributed through the product. The required airflow is generated by axial flow fans, positioned on the roof of the exhaust air duct. The air speed can be adjusted using a false air flap within the dryer column. Louver dampers behind the axial flow fans close during emptying and prevent the discharge of dust into the exhaust air
Fluidized bed dryer (also called fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. The equipment works on a principle of fluidization of the feed materials. In fluidization process, hot air is introduced at high pressure through a perforated bed of moist solid particulate. The wet solids are lifted from the bottom and suspended in a stream of air (fluidized state). Heat transfer is accomplished by direct contact between the wet solid and hot gases. The vaporised liquid is carried away by the drying gasses. Sometimes to save energy, the exit gas is partially recycled.
Drying starts at the bottom of the bin, which is the first place air contacts. The dry air is brought up by the fan through a layer of product. Drying happens in a layer of 1 to 2 feet thick, which is called the drying zone. The drying zone moves from the bottom of the bin to the top, and when it reaches the highest layer, the product is dry.