ORNL Gasification System
Customer:US Department of Energy and
Johnson Controls Inc. for
Oak Ridge National Laboratory
Location:Oak Ridge, Tennessee
Facility Type:DOE Energy Research Laboratory and
Bioenergy Science Centre
Application:Biomass plant to provide heat for the ORNL campus
Nexterra Scope of Work:Nexterra will supply the complete gasification system.
Highlights
Capacity:60,000 lbs/hr of low pressure steam for district heating
Fuel:Locally sourced wood residue with 3+ day storage in dual-bin system
Fuel moisture content:10 - 50%
Fuel source:Local mills
Benefits
Fuel Cost Savings:$5-7 million per year
Greenhouse Gas Reduction:20,000 tons/yr (estimated)
Reduced Reliance on Fossil Fuels:Enables ORNL to shut down four fossil fuel fired boilers
Local Economy:Supports local business by using locally sourced wood waste
Process
- 3 gasifiers convert wood biomass to combustible syngas.
- Clean syngas is burned in the oxidizer.
- The hot flue gas is directed through a steam boiler.
- The steam is then distributed to all ORNL campus buildings.
- The ESP further cleans flue gas before releasing it out the stack.
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