LAUSR

Abstract Five types of available high-volatile fuels from different origins were burnt under a variety of operating parameters in bubbling bed to explore the emission characteristics of N2O and NOX. The main operating parameters studied were bed temperature, excess air ratio, fuel particle size, and bed material size. It was found that the N2O emission decreased as the temperature increased while the NOX emission was incompletely the same. Both the N2O and the NOX emissions increased with the increasing excess air ratio. Two series of fuel particle size experiments showed the opposite results, indicating that the influence of particle size on the N2O emission depended on fuel types. The N2O emission decreased and the NOX emission also increased with the increasing bed material size. After devolatilization, N2O and NOX emissions decreased and devolatilization had a greater impact on N2O. Moreover, devolatilization had a greater impact on N2O, which could obviously reduce N2O and NOX emissions.