Catalytic steam gasification of biomass has been carried out in decoupled triple bed gasification (DTBG) system which consists of pyrolyzer, reformer and combustor. Olivine and NiO/olivine used as in-situ tar destruction catalyst. The result shows the gasification system with catalytic bed materials allows an option to improve tar removal that enhances H₂ production. A gas yield of 1.59 Nm³/kg daf with H₂ concentration of 56.1 vol% and tar content as low as 0.6 g/Nm³ has been achieved with the presence of NiO/olivine. Olivine and NiO/olivine reduced tar yield by 55% and 94% respectively compared to quartz. Gas yield, tar removal efficiency and water conversion enhanced by higher reformer temperature. The longer residences time of catalyst in reformer leads in-situ reduction of olivine and NiO/olivine that adds up in-situ tar reforming. Particularly, in-situ reduction of NiO to metallic Ni enhances tar and CH₄ reforming reaction.

生物质的催化蒸汽气化已在由热解器，重整器和燃烧器组成的解耦三层床气化（DTBG）系统中进行。橄榄石和NiO /橄榄石用作原位焦油破坏催化剂。结果表明，采用催化床材料的气化系统可以选择提高焦油去除率，从而提高H _2的产生。气体产量为1.59 Nm ³ / kg daf，H ₂浓度为56.1 vol％，焦油含量低至0.6 g / Nm ³NiO /橄榄石的存在已经达到了目的。与石英相比，橄榄石和NiO /橄榄石将焦油收率分别降低了55％和94％。较高的重整炉温度可提高天然气产量，焦油去除效率和水转化率。催化剂在重整器中停留时间的延长导致橄榄石和NiO /橄榄石的原位还原，从而增加了焦油的原位重整。特别地，将NiO原位还原成金属Ni增强了焦油和CH ₄重整反应。