OPTIMAL DESIGN FOR AN ETHANOL PLANT COMBINING FIRST AND SECOND-GENERATION TECHNOLOGIES

Ciencia Tecnologia y Futuro Pub Date : 2014-12-01 DOI:10.29047/01225383.35

Yailet Albernas-Carvajal, G. Corsano, Marlén Morales-Zamora, Meilyn González-Cortés, Ronaldo Santos-Herrero, E. González-Suárez

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引用次数: 9

Abstract

The synthesis and optimal design of batch plants is addressed in this study. It was applied to the technology of conventional ethanol production in a Cuban distillery using the product of enzymatic hydrolysis of pretreated bagasse as another sugared substrate, starting from laboratory results. The optimal configuration of stages, the number of units in each stage, the unit sizes and minimum total production cost are obtained from the global optimization model and the proposed superstructure. This global model is a mixed integer nonlinear programming (MINLP) formulation, which is represented and resolved by the Professional Software, General Algebraic Modeling System (GAMS) version 23.5 applying DICOPT Solver. Different scenarios are analyzed: attaching pretreatment and enzymatic hydrolysis of bagasse to a conventional distillery plant, selling ethanol, or selling the furfural as by-product if there is a guaranteed market. With this, an actual net present value (VNA) of USD 44´893 358.7 and 1.51 years of Payback Period (PP) are obtained.

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结合第一代和第二代技术的乙醇装置的优化设计

研究了间歇式装置的合成与优化设计。从实验室结果开始，将其应用于古巴酿酒厂的常规乙醇生产技术，该技术使用酶解预处理甘蔗渣的产物作为另一种糖底物。根据全局优化模型和提出的上部结构，得到了各阶段的最优配置、各阶段的机组数量、机组尺寸和最小总生产成本。该全局模型是一个混合整数非线性规划(MINLP)公式，由专业软件，通用代数建模系统(GAMS) 23.5版应用DICOPT求解器表示和求解。分析了不同的方案:将蔗渣的预处理和酶解附加到传统的酿酒厂，销售乙醇，或者在有保证市场的情况下将糠醛作为副产品出售。由此，实际净现值(VNA)为44 × 893、358.7和1.51年的投资回收期(PP)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ciencia Tecnologia y Futuro

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