The Thermal Cracking Experiment Research of Tar Model Compound

Abstract

In this study γ-Al2O3 was selected as the carrier and toluene was taken as the biomass tar model compounds in order to evaluate the thermal cracking reaction of toluene at different reaction temperatures (800?, 850? and 900?).The composition and content changes of individual species helped to understand the mechanisms during the thermal cracking reaction. The author reported the thermal cracking efficiency of toluene and carbon deposition efficiency at the different thermal cracking temperature. Experimental results indicated that the thermal cracking efficiency of toluene was 87.7? at 900?. And the carbon deposition efficiency was up to the maximum at 850?. The aromatic extent of toluene was increasing after toluene being thermal cracked.γ-Al2O3 was covered by the deposit carbon in the thermal cracking process. It caused the system resistance increased and the concentration of gas generation of toluene after thermal cracking changed. Moreover, the concentration of gas generated was up to the maximum after the reaction carried out 20 minutes at 800? and 850?.