摘要
以稻壳为原料，通过流化床快速热解的方式制备生物油。初步考察了螺旋进料速率对流化床反应参数的影响。当进料速率由4kg／h提高至5kg／h时，床层温度明显下降，床层压差明显增加，燃气流量也明显增加，表明热解产物更多地发生了二次裂解反应。采用GC-MS对快速热解所得生物油的组成进行分析，采用TG—DSC考察生物油的热稳定性，表明在250—400℃之间，出现较强的放热现象，缩聚现象严重，并对其重要的燃料性能进行表征，pH值2．33，水分24．0％，热值16．3MJ／kg，密度1．17g／mL，黏度45mm2／s（30℃）。
Bio-oil from rice husk was prepared by fast pyrolysis. The effect of feed rate on the reaction parameters of fluidized reactor was investigated. With increasing feed rate （4 kg/h to 5 kg/h） it was found that the pressure difference and pyrolysis gas were also increased, while reaction temperature decreased. These results indicated that secondly-cracking reaction was increased in pyrolytic products. The components of product were analysized by GC-MS. Thermal stability of bio-oil was determined by TG-DSC. The major fuel properties of bio-oil were characterized.
出处
《生物质化学工程》
CAS
2011年第4期23-26,共4页
Biomass Chemical Engineering
基金
国家林业局公益性行业专项(200904008)
关键词
稻壳
热解
生物油
rice husk
pyrolysis
bio-oil
