Rice Husk Gasification in a Two-Stage Reactor: Effect of K2CO3 on H2/CO Ratio in Homogeneous and Heterogeneous Tar Cracking

Abstract

The objective of this work was to investigate the use of catalyst to enhance H₂/CO ratio and syngas production during homogeneous and heterogeneous tar cracking of rice husk biomass. The experiments were performed at atmospheric pressure in indirectly heated two-stage gasification system. The pyrolysis chamber temperature was set at 500^oC and that of gasification chamber was varied between 800^oC and 900^oC for different experimental runs. Homogeneous and heterogeneous gasification was performed at different operating conditions. Results obtained shows that catalyst helped in increasing H₂/CO ratio and heterogeneous gasification showed better results than homogeneous gasification.