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中文摘要：
生物质气化是一种可有效利用生物质能源的热化学转化技术。该文利用大型化工流程模拟软件Aspen Plus建立生物质在流化床气化炉内空气水蒸气气化模型,并研究气化温度对产气组分的影响。将模拟结果与试验结果进行了对比,吻合良好,表明该模型具有一定的适用性。利用灵敏度分析功能研究了空气当量比（equivalence ratio,ER）和水蒸气/生物质质量比（S/B）对产气组分、热值以及气化效率的影响。结果表明：提高气化温度,产气中H2和CO2含量增加,而CO和CH4含量减小;在空气当量比为0.27时气化效率最高;当S/B取1.3~1.7范围时,产气热值较高,可达11.8MJ/m3。
英文摘要：
Gasification is one of the effective utilization means of biomass energy.Based on the Aspen Plus simulator,a model was developed to study the gasification of biomass with air and steam media in fluidized bed gasifier.The simulation results were compared with experimental data,which indicated that the model established herein was reliable and applicable.Through the sensitivity analysis module of Aspen Plus simulator,effects of gasification temperature,equivalence ratio（ER） as well as steam-to-biomass ratio（S/B） on the gas composition,heating value and gasification efficiency were systematically studied.The simulation results indicate that the increase of gasification temperature results in more H2and CO2 formed in the product gas,but on the contrary,the CO and CH4 fractions are decreased;the maximal gasification efficiency is reached at equivalence ratio of 0.27.Finally,the heating value reaches maximum value of 11.8 MJ/m3when steam-to-biomass ratio is in the range of 1.3~1.7.
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