产业化工况下木质纤维素生物炼制过程的流程模拟
首发时间:2012-12-07
摘要:针对产业化规模的木质纤维素生物炼制工艺,在Aspen plus流程模拟平台上建立了全过程流程模拟模型。首先,构建了木质纤维素生物炼制涉及物质的全组分物性数据库,建立了Aspen plus平台上的严格热力学流程模拟模型;然后,对年加工30万吨玉米秸秆原料生产纤维素乙醇的产业化装置进行了严格流程模拟计算。从节能减排角度对纤维素乙醇生产过程中的新鲜水用量、废水减排和蒸汽能耗等工程问题进行了大量分析,并给出了积极的节能减排解决方案。本文建立的Aspen plus平台上木质纤维素生物炼制过程流程模拟模型可以为产业化纤维素乙醇生产技术的过程设计、操作优化以及技术经济评价提供设计和优化工具,并可以将最新的研究结果对最终成本降低的贡献和影响做出详细的评价。
关键词: 木质纤维素生物炼制 计算流体力学(CFD) 流程模拟 Aspen plus 纤维素乙醇
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Flowsheet Simulation of Industrial scale biorefining processes of lignocellulose
Abstract:Lignocellulose biorefining has great potentials of feedstock supply and product market in the major agricultural countries. The flowsheet simulation model for the industrial scale biorefining process of cellulosic ethanol production using lignocellulosic feedstocks was established. The physical property database was established based on the materials analysis and parameter estimation methods for the biomass components involved in the lignocellulose processing. The biorefining plant with the processing capacity of 300,000 tons corn stover annual for production of 50,000 tons fuel ethanol annual was simulated using the established Aspen plus model and the water and energy consumption of the processes was analyzed. The whole flowsheet balance of the mass and enthalpy data were calculated and used for the design of the processes. The model can be used in the future industrial plants for the process design, operation optimization and economic evaluation.
Keywords: Lignocellulose biorefinery Computational fluid dynamics (CFD) flowsheet simulation Aspen plus Cellulosic ethanol
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