Improving biomass boiler performance and emissions

摘要

Fuel delivery is a common problem in biomass plants. Wood fuel is non-uniform in shape, density, moisture content, ash content, and energy content. Over-sized or stringy pieces of wood fuel will cause bridging and wet fuel sticks to the sides of fuel chutes, often causing plugs. Fuel delivery problems result in decreased efficiency, boiler upsets, lower steam production and emissions violations. The fact that wood fuel is so problematic is the justification many plants use for resorting to manual fuel control.