3-5-3 Rapid pyrolysis of biomass by semiconductor microwave generator without using microwave sucseptor

Abstract

Pyrolysis of biomass produces useful compounds such as biochar, bio oil and syngas, but low thermal conductivity of biomass is a big issue to achieve efficient heat transfer. In this study, microwaves with high electric field density are input into a single mode cavity using high coherence microwaves generated by a semiconductor oscillator. Pyrolysis of cellulose and rise straw were performed by directly heating biomass wiuthout using microwave susceptor. The maximum heating rate of rice straw attained 330°C/sec by using the present microwave set-up.