Building biomass into the utility fuel mix at NYSEG: System conversion and testing results for Greenidge Station

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:478630

Benjamin, W ^[1]

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1. New York State Electric & Gas, Binghamton, NY (United States)

NYSEG is in the second phase of developing resources and systems for cofiring biomass with coal. In the first phase, stoker boilers were fired with biomass (typically wood waste products). Encouraged by positive results at the older stokers, NYSEG decided to develop the process for its pulverized coal boilers beginning with Greenidge Station, a 108-MW pulverized coal (PC) unit with a General Electric turbine generator and a 665,000-lb Combustion Engineering, tangentially fired boiler. Greenidge Station is in the center of New York, surrounded by farms, forests, vineyards, and orchards. The test bums at Greenidge Station demonstrated that a parallel fuel feed system can effectively provide wood products to a PC unit. Emission results were promising but inconclusive. Additional testing, for longer durations, at varied loads and with different woods needs to be conducted to clarify and establish relationships between the percent wood fired at varying moisture contents. Loads need to be varied to develop continuous emission monitor emission data that can be compared to coal-only data. Economic analysis indicates that it will be beneficial to further refine the equipment and systems. Refinements may include chipping and drying equipment, plus installation of fuel storage and feed systems with permanent boiler penetration. NYSEG will attempt to identify the problems associated with cofiring by direct injection, compared to cofiring a biomass/coal mixture through the existing fuel handling system. Specifically, an examination will be made of fuel size criteria and the system modifications necessary for minimal impacts on coal-fired operation.

• OSTI ID: 478630
• Report Number(s): CONF-960958--
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
AIR POLLUTION MONITORING
BOILERS
COAL
COCOMBUSTION
ECONOMIC ANALYSIS
FUEL FEEDING SYSTEMS
PERFORMANCE TESTING
WOOD WASTES