The influences of equivalence ratio (ER), oxygen concentration (OC) and fluidization velocity (FV) on the gasification performance in a pilot-scale fluidized bed with capacity of 1 ton biomass (the mixture of agricultural residue) per day were investigated using oxygen-enriched air as gasification agent and high-alumina bauxite as bed material. The characteristics of syngas (lower heating value (LHV), gas yield (Y), carbon conversion (CC) and cold gas efficiency (CGE)), bio-char (LHV and Proximate analysis) and tar (tar yield and LHV) were used to evaluate the gasification performance in this study. The results showed that 0.161 was the optimal ER due to the high quality of syngas produced and relatively lower tar generation with ER changing from 0.115 to 0.243 at OC ≈ 40% and FV ≈ 1.20.29.7% was the optimal OC due to the highest Y and CC and relatively low tar generation when OC varied from 21% to 44.7% at ER ≈ 1.40 and FV ≈ 1.15. Although higher FV could improve syngas quality, it also resulted in the higher tar yield and heavier wear, therefore, the optimal gasification performance was achieved at moderate FV (FV = 1.13). This study proved that oxygen-enriched gasification in a large-scale fluidized bed was an effective option to produce gaseous biofuels with high quality.

研究了当量比（ER），氧气浓度（OC）和流化速度（FV）对每天使用1吨生物质（农业残余物的混合物）的中试规模流化床中气化性能的影响。 -富集空气作为气化剂，高铝矾土作为床层材料。合成气的特征（较低的热值（LHV），气体产率（Y），碳转化率（CC）和冷气效率（CGE）），生物炭（LHV和邻近分析）和焦油（焦油产率和LHV）分别为在本研究中用于评估气化性能。结果表明，由于合成气的高质量和焦油生成量相对较低，0.161是最佳ER，在OC≈40％和FV≈1.20.29时ER从0.115变为0.243。当ER≈1.40和FV≈1.15时OC从21％变为44.7％时，由于最高的Y和CC以及相对较低的焦油生成，7％是最佳OC。尽管较高的FV可以改善合成气质量，但也会导致较高的焦油收率和更重的磨损，因此，在中等FV（FV = 1.13）时可获得最佳的气化性能。这项研究证明，在大型流化床中富氧气化是生产高质量气态生物燃料的有效选择。