A novel hybrid feedstock to liquids and electricity process: Process modeling and exergoeconomic life cycle optimization

Chang He, Fengqi You, Xiao Feng*

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

This article proposes a novel hybrid low-rank coal (LRC)/biomass/natural gas process for producing liquid fuels and electricity. The hybrid process highlights coexistence of indirect and direct liquefaction technologies, cogasification of char and biomass, and corefinery of LRC syncrude and Fischer-Tropsch syncrude. A process simulation based on detailed chemical kinetics is present to illustrate its feasibility. In addition, we propose an exergoeconomic life cycle optimization framework that seeks to maximize the primary exergy saving ratio, primary total overnight cost saving ratio, life cycle waste emissions avoidance ratio, and primary levelized cost saving ratio by comparing the proposed hybrid process to its reference stand-alone subsystems. From the results, we can determine four optimal designs which yield competitive breakeven oil prices ranging from $1.87/GGE to $2.13/GGE.

Original languageEnglish (US)
Pages (from-to)3739-3753
Number of pages15
JournalAIChE Journal
Volume60
Issue number11
DOIs
StatePublished - Nov 1 2014

Keywords

  • Hybrid process
  • Life cycle optimization
  • Low-rank coal
  • Process simulation

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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