Catalytic Tar Conversion in Two Different Hot Syngas Cleaning Systems

Tar in the product gas of biomass gasifiers reduces efficiency gasification processes and causes fouling system components pipework. Therefore, an efficient tar conversion is a key step effective reliable syngas production. One most promising approaches catalytic decomposition species combined with hot cleaning. The catalyst must be able to convert synthesis at temperatures around 700 °C downstream gasifier without preheating. A Ni-based doped high activity was developed characterized detail. An appropriate composition transition metals applied minimize coking. Precious (Pt, Pd, Rh, or combination two them) were added small quantities. Depending on cleaning used, both precious co-impregnated pellets ceramic filter material. In case pelletized-type catalyst, revealed above 80% for 70 110 h. composed Ni, Fe, Cr oxides, promoted Pt impregnated fiber Al2O3(44%)/SiO2(56%), active compact system. This catalytically naphthalene 93% over 95 h deactivation.