Development of a simplified gas ultracleaning process: experiments in biomass residue-based fixed-bed gasification syngas

Abstract For the realization of small-scale biomass-to-liquid (BTL) processes, low-cost syngas cleaning remains a major obstacle, and for this reason simplified gas ultracleaning process is being developed. In study, low- to medium-temperature final based on adsorption organic solvent-free scrubbing methods was coupled pilot-scale staged fixed-bed gasification facility including hot filtration catalytic reforming steps extended duration tests generation ultraclean syngas. The purified from woody agricultural biomass origin degree suitable synthesis. contained up 3000 ppm ammonia, 1300 benzene, 200 hydrogen sulfide, 10 carbonyl 5 cyanide. Post-run characterization displayed that accumulation impurities Cu-based deoxygenation catalyst (TOS 105 h) did not occur, demonstrating effective main impurity removal achieved in first two steps: acidic water (AWC) by activated carbons (AR). test campaign, comprehensive multipoint analysis confirmed ammonia fully removed step, benzene H 2 S were subsequent carbon beds. > 90% 100 COS HCN These results provide insights into affinity complex matrix, which would be arduous replicate laboratory conditions.