Sarma V. Pisupati
Associate Professor, Energy and Mineral Engineering Department
The Pennsylvania State University
Pyrolysis products of biomass (bio-oils) have been shown to cause a reduction in NOx emissions when used as reburn fuels in combustion systems. When these bio-oils are processed with lime, calcium is ion-exchanged and these oils when introduced into a combustion chamber pyrolyzes and produces volatile products that reduce NOx emissions through reburn mechanisms. Simultaneously, calcium reacts with SO2 to form calcium sulfate and thus reduces SO2 emissions. Higher yields of pyrolysis gases increased the NO reduction potential of biomass based samples through homogeneous gas phase reactions. Calcium in biomass based samples effectively reduced SO2 emissions.