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以农业废弃物生物质为原料,利用水相转化技术,进行了百吨/年规模生物航油类烃(C_8~C_(15))合成试运行.过程中采用两步酸解法分别将玉米秸秆中半纤维素和纤维素转化为糠醛和乙酰丙酸,作为生物质基平台化合物.在碱性条件下糠醛与乙酰丙酸经Aldol缩合反应实现碳链增长,生成的长链含氧中间体经过低温预加氢、高温加氢脱氧及精制,生成C_8~C_(15)范围内液态烃,可作为生物航油组分.以试运行实验结果为基础,进行了过程的物质与能量转化分析.结果表明,该路线获得液态烃类的基本性质满足合成航油ASTM-7566标准要求,并充分利用了原料中纤维素和半纤维素组分,是一条基于生物质的长链液态烃合成路线,1,t航油约需10~12,t干基玉米秸秆.
Taking the biomass of agricultural wastes as raw material and using the technology of water phase transformation, a hundred tons / year scale bio-oil (C_8 ~ C_ (15)) synthetic trial operation was carried out.The two steps acid hydrolysis method was used to separate corn stalks The hemicellulose and cellulose are converted into furfural and levulinic acid, which are used as biomass-based platform compounds.Furthermore, Aldrich condensation of furfural with levulinic acid leads to carbon chain growth under alkaline conditions, and the resulting long-chain oxygenated intermediates Low temperature pre-hydrogenation, high temperature hydrodeoxygenation and refining can produce liquid hydrocarbons in the range of C_8 ~ C_ (15), which can be used as bio-aviation fuel components. Based on the experimental results, the material and energy conversion processes were analyzed. The results show that the basic properties of the liquid hydrocarbons obtained by the route meet the requirements of the synthetic jet fuel ASTM-7566 standard, and make full use of the cellulose and hemicellulose components in the raw material, which is a biomass-based long-chain liquid hydrocarbon synthesis route. 1, t aviation oil about 10 ~ 12, t dry corn stalks.