Converting Waste Agricultural Biomass into a Resource - UNEP

PhilRice Flatbed Dryer 112
Philippines, Research
Crop
Residue
Process
Equipment
Main Product
Rice, corn, coffee,
Rice Hull and other farm by-products such as
corncobs, or coffee hulls
Combustion
Furnace
Heat
Technical Description of Technology
PhilRice adapted the Vietnamese design by using hollow blocks for bin. The
design of furnace was replaced with an inclined step grate type instead of the
original vibrating ash grate. Later, the furnace was made of adobe replacing
the firebricks in the original design.
The dryer can complete drying from wet or dripping wet to 13-14% MC; dried
output can be used for seed purposes with accurate control of temperature at
43°C. It consumes 35 kg of rice hull per hour but it can also use other farm byproducts
such as corncobs, or coffee hulls as fuel for heating drying air.
Operation and Maintenance Requirements
Simple to operate and needs minimal maintenance
Specific Considerations for Developing Countries
It is simple and easy to fabricate. It also has multi-crop capability for other
grains such as corn, coffee, legumes, and other crops (banana and cassava
112 http://www.philrice.gov.ph/machinery/flatbed.htm
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