有色金属科学与工程2017，Vol.8Issue(1)：139-144,6.DOI:10.13264/j.cnki.ysjskx.2017.01.024
鄱阳湖水生生物质热解过程中碱金属析出特征
Precipitation characteristics of alkali metal of aquatic biomass in Poyang Lake during pyrolysis
摘要
Abstract
Based on the pyrolysis experiments of typical aquatic biomass in Poyang Lake with tube furnace, the precipitation characteristics of alkali metal were studied. The results show that the highest releasing percentage of sedge and eichhornia crassipes during pyrolysis is more than 60%for K and Na. K mainly exists with inorganic salt formation in eichhornia crassipes, and precipitates with inorganic salt formation in the middle and later stage of the pyrolysis reaction, Na precipitation rate was higher than K, which is mainly due to interfacial bond energy of Na lower than K. Meanwhile, aquatic biomass species are important factors for K and Na releasing ratio during pyrolysis, which is related with the combined forms of K and Na in aquatic biomass and sample structure. Dynamical model was finally constructed based on the K and Na releasing behavior of aquatic biomass during pyrolysis. Using the model, the K and Na releasing characteristics of the sedge and eichhornia crassipes pyrolysis processes were analyzed, and the K and Na releasing characteristics predicted by this model are more satisfying in depicting the experimental data. It indicates that dynamical model can be applied to predict the K and Na releasing characteristics of aquatic biomass during pyrolysis.关键词
水生生物质/热解/碱金属/动力学模型Key words
aquatic biomass/pyrolysis/alkali metal/dynamical model分类
能源科技引用本文复制引用
费华,石金明,李元林,刘洋..鄱阳湖水生生物质热解过程中碱金属析出特征[J].有色金属科学与工程,2017,8(1):139-144,6.基金项目
国家自然科学基金资助项目(51666004,51566012) （51666004,51566012）
中国博士后科学基金资助项目(2015M571991) （2015M571991）
江西省自然科学基金资助项目(20142BAB203029,20151BAB213025) （20142BAB203029,20151BAB213025）
江西省教育厅基金资助项目(GJJ150626) （GJJ150626）
