生物质整合式流化床热解制油系统试验研究

Experimental Research on Biomass Flash Pyrolysis for Bio-oil in a Fluidized Bed Reactor

提出了一种将生物质通过热化学方法转化为液体燃料的整合式流化床热解系统,该系统能实现液体燃料的分级制取和能源的综合利用。给料系统的独特设计确保了颗粒状生物质物料能以最大速率2 0 kg/ h顺利供给流化床反应器。试验分析了反应温度对生物质热解产物分布的影响,5 0 0℃的中温有利于生物油产量的最大化。通过气相色谱和傅里叶红外光谱联用分析仪确定了生物油的主要组分为含有酮、醛取代基的苯酚类和少量的酸。

This paper introduced an integrated fluidized bed pyrolysis system, which could transform biomass into multilevel liquid fuel by thermo-chemical conversion and actualize comprehensive utilization of biomass as a clean energy. Biomass was fed continuously at a maximum rate of about 20 kg/h directly into the reactor by way of a unique solid feeder. The effect of temperature on the distribution of pyrolysis products was studied. It was shown that a maximum bio-oil yields could be obtained at the temperature of 500°C. Combined with GC-FTIR analysis, bio-oil was mainly composed of phenol compounds with different functional groups such as ketone group, aldehyde group. Besides that, acid and ester compounds could also be found in bio-oil.