【摘要】 利用Aspen Plus模拟软件建立基于生物质主要组分(纤维素、半纤维素、木质素和萃取物)叠加的生物质热解模块,并选取3种典型生物质为原料验证热解模块的可行性。在此基础上,建立串行流化床生物质热解系统,针对补燃生物质和补燃热解焦炭实现自供热的两种方案,进行系统模拟计算及性能分析。结果表明,基于组分叠加原理所建立的生物质热解模块能够对不同种类生物质的热解产物进行预测。对于以制油为目的,将生物质热解产生的焦炭送入燃烧反应器进行燃烧供热的系统方案性能更优,所用生物质原料较少,生物油产率和系统效率较高。生物质种类以选择玉米秆和花生藤等纤维素含量较高的原料较适宜,生物质热解温度建议控制在约400℃。更多还原

【Abstract】 Aspen Plus was used to build the biomass pyrolysis system model which was based on the superposition of biomass main components(cellulose,hemicellulose,ligin and extract),then three kinds of typical biomasses were selected to check the feasibility of the model.Based on this,biomass pyrolysis interconnected fluidized beds was proposed in this paper.Aimed at the reality of self-heating balance,two kinds system plans were designed,system one was added some biomasses for combustion while the second system burned the char which generated by biomass pyrolysis,then performed the simulation.The results show that the pyrolysis model is feasible to some content,it can predict the biomass pyrolysis products for different biomasses.For the purpose of producing bio-oil,the system of burning char is better for it has a high bio-oil productivity and high system efficiency while it use less biomass.Biomasses which are rich in cellulose like cornstalk and peanut straw can be selected as materials,and pyrolysis temperture should be controlled in about 400℃.更多还原