A generalized disjunctive programming framework for the optimal synthesis and analysis of processes for ethanol production from corn stover

Felipe Scott, GERMAN EDUARDO AROCA ARCAYA, José Antonio Caballero, RAUL JORGE CONEJEROS RISCO

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The aim of this study is to analyze the techno-economic performance of process configurations for ethanol production involving solid-liquid separators and reactors in the saccharification and fermentation stage, a family of process configurations where few alternatives have been proposed. Since including these process alternatives creates a large number of possible process configurations, a framework for process synthesis and optimization is proposed. This approach is supported on kinetic models fed with experimental data and a plant-wide techno-economic model. Among 150 process configurations, 40 show an improved MESP compared to a well-documented base case (BC), almost all include solid separators and some show energy retrieved in products 32% higher compared to the BC. Moreover, 16 of them also show a lower capital investment per unit of ethanol produced per year. Several of the process configurations found in this work have not been reported in the literature.

Original languageEnglish
Pages (from-to)212-224
Number of pages13
JournalBioresource Technology
Volume236
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Biofuels
  • Process optimization
  • Solid-liquid separation
  • Techno-economic analysis

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