BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011 Energy Efficient Air Drying of Biomass ( Woodchips, Bark, Saw Dust, Forest Waste, & Bagasee)" March 16 2011 By: Fred Bennett General Sales Manger Metso Wood Handling - North America Metso Paper USA
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BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011
Energy Efficient Air Drying of Biomass( Woodchips, Bark, Saw Dust, ForestWaste, & Bagasee)"
March 16 2011
By: Fred BennettGeneral Sales MangerMetso Wood Handling - North AmericaMetso Paper USA
BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011
Belt Dryer Design Basis:The Metso Kuvo belt dryer is a low-temperature dryer which is designed toremove water efficiently by evaporatingmoisture from wet biomass, like bark, woodchips, sawdust, bagasse etc. The dryer is ableto utilize various low-temperature heatsources; waste heat, low-pressure steam, hotwater, or hot air – no primary energy isneeded. Dry biomass can then be used asbiomass fuel, or in fuel making process . Thedrying process is gentle to the product and ithas high availability and high capacity
BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011
Metso Kuvo Belt Dryers For Biomass• Based on the Following Belt Drying Principles
* Utilization of waste heat* High availability
*Non-destructive drying*Low emissions
*Automatic operation*Low Maintenance
BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011
Kuvo Belt Dryer For Biomass• Several applications
1) Gasification processReplacing oil with syn gas in
lime kilnHigh oil priceCO2 taxation
Bioethanol/biodieselproduction
2) PelletizingRaw material drying before
pressing3) Power productionTo increase combustion
efficiency
GASIFIER
BELT DRYER
LIME KILN
WETBIOMASS
SYNGAS
DRYBIOMASS
Biomass drying and gasificationcan be used to reduce oil
consumptionin lime kiln
BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011
Belt Dryer For Biomass• Modular Structure Provides flexible dimensioning
• Capacity- Evaporation 2 - 20 tons of H2O/h- Material flow 20 - 200 loose-m3/h
- Dry content in typically 30-60 %
- Dry content out - up to ~90 %
• Size / unit- Area 40 - 260m2
- Length up to 50m (165 ft)- Width up to 6m (20 ft) For bigger capacities, several
dryers can be installed one on topof the other to save floor space
BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011
Belt Dryer For Biomass• Utilization of waste heat
Two heat sources likehot water and steam or
two hot water sources can becombined in the same air heat
exchanger
Belt Dryer can utilize severaltypes of low temperaturesources
1)Low temperature water40°C…120°C (104°F -250°F)
2) Low pressure steam
3) Hot waste gas
4) Hot oils
BioPro Expo & Marketplace / Atlanta, GA / March 14-16, 2011