生物油精炼提质工艺研究

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在日处理量2000t生物质快速热解工厂的基础上,利用Aspen Plus软件建立完整的生物油精炼提质制汽柴油的流程模型,采用生物油的催化加氢和加氢裂解及产品回收模拟生物油的精炼提质过程。选择水、丁烯酸、对苯二酚、糠醛、羟基丙酮、纤维二糖、左旋葡聚糖、二苯并呋喃以及二甲氧基二苯乙烯等化合物组成的混合物代表生物油,经催化加氢过程后,各组分产率分别为:加氢油41.39%,水52.73%,小分子气体5.88%,与文献结果对比,基本符合实际生产情况。得到的加氢油进一步加氢裂解,最终回收到汽油组分产品8540kg/h,柴油组分产品10907kg/h,以原材料生物质为参考标准,产率分别为10.25%和13.09%。通过对生物油精炼提质过程各模块的能量参数分析可知,以初步生物油为原料,生产1kg的汽柴油产品需要消耗电能3.989MJ,消耗蒸汽热能1.664MJ,总耗能5.653MJ,将能量折算成标准煤用量后,生产1kg汽柴油产品的能耗相当于0.4319kg标准煤。 On the basis of daily throughput of 2000t biomass pyrolysis plant, a complete bio-oil refining process model was developed by using Aspen Plus software. Catalytic hydrogenation and hydrocracking of bio-oil and product recovery of mimetics Oil refining and upgrading process. Selection of water, crotonic acid, hydroquinone, furfural, hydroxyacetone, cellobiose, levoglucosan, dibenzofuran and dimethoxy stilbene and other compounds consisting of a mixture of bio-oil, the catalytic Hydrogen process, the rate of each component were: hydrogenated oil 41.39%, 52.73% water, small molecule gas 5.88%, compared with the literature, basically in line with the actual production. The resulting hydrogenated oil was further hydrocracked. The final product recovered was 8540kg / h of gasoline component products and 10907kg / h of diesel component products. The raw material biomass was the reference standard, and the yields were 10.25% and 13.09% respectively. Through analyzing the energy parameters of each module in the process of bio-oil refining and upgrading, it can be seen that the production of 1kg of gasoline and diesel oil requires 3.989MJ of electricity, 1.664MJ of steam heat and 5.653MJ of total energy to produce 1kg of gasoline and diesel. Into the standard amount of coal, the production of 1kg gasoline and diesel products, the equivalent of 0.4319kg energy consumption of standard coal.
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