Co-firing of biomass and opportunity fuels in low NOx burners
Solutions for simultaneous firing of biomass and other opportunity fuels with coal have gained increasing interest in the recent past. Many utilities are taking advantage of co-firing cost-effective biomass fuels with pulverized coal for green house gas reduction, SO2 and NOx reduction, and to increase the production of environmentally advantageous, renewable green power. Co-firing of production wastes or fuels such as petroleum coke, coal-water slurry, and tire-derived fuel can increase plant competitiveness through reduced fuel costs. Biomass or opportunity fuel co-firing can be retrofit to most pulverized coal units. Apart from secondary fuel storage and handling, integration of the co-firing equipment into the existing burner system is one of the major tasks of such a retrofit. Full load coal capability, NOx emissions, boiler performance and equipment integration and long term reliability are major considerations when modifying low NOx combustion equipment to include biomass or other co-firing fuels. Foster Wheeler has long been a leader in developing cost effective biomass firing systems. The paper presents the design considerations when biomass or opportunity fuels are to be fired in wall-fired and tangential fired pulverized coal boilers. Installing a burner specifically designed for firing two or more dissimilar fuels can optimize co-firing. The paper outlines the design concepts applicable to this approach to biomass co-firing.
- Research Organization:
- Foster Wheeler Energy Corp., Clinton, NJ (US)
- OSTI ID:
- 20034360
- Country of Publication:
- United States
- Language:
- English
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