The Evaluation on Three Types of Malaysian Dolomites as a Primary Catalyst in Gasification Reaction of EFB and Tar Cracking Efficiency

摘要

The conversion of biomass into hydrogen-rich syngas has been getting attention recently as it has potential sustainability benefits of agricultural residues. In this study, gasification of empty fruit bunch (EFB) was performed using a various calcined Malaysian dolomite catalyst which denoted as P1, P2 and P3. The physicochemical properties of the catalysts were examined using XRF, XRD, BET and SEM. The effect of various catalyst to biomass (C/B) ratio (varied in the range of 0.05 to 0.3 in an increment of 0.05) of P1, P2 and P3 catalyst in EFB gasification was evaluated at gasifier temperature of 850 oC. The gas produced was analyzed by GC. The effect of various C/B ratio on tar conversion was also examined. The result showed, with lower impurities in calcined dolomites and high content of active sites (CaO-MgO) improve the characteristics of P1 and P2 in crystalline structure contributes to a significant reduction in tar cracking (~ 78 % and 75 %, respectively) and higher H2 yield (32.25 mg H2/g EFB).