Effect of Porous and Nonporous Carbonaceous Substrates on Polystyren Thermal Degradation during Fast CO_2 Laser Heating

摘要

To investigate the effect of porosity on elution of voltatiles from a devolatilizing coal particle under pulverized coal combustion (PCC) type heating rate conditions, polystyrene was doped into porous model char (Spherocarb) particles and also coated on the surface of nonporous model char (Glassy Carbon) particles. Particles of approximately 80μm diameter particles were heated to a temperature in the range of 1200-2000 K in 32 ms by means of two converging CO_2 laser beams.