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Exergetic analysis of renewable Fischer-Tropsch fuels production from biomass, CO2 and electricity

Albrecht, Friedemann Georg and Dietrich, Ralph-Uwe (2017) Exergetic analysis of renewable Fischer-Tropsch fuels production from biomass, CO2 and electricity. ELCAS Conference, Nysiros, Griechenland.

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Abstract

Greenhouse gas emissions in the transport sector could significantly be reduced when fossil fuels are replaced by green alternatives. Though, natural non-fossil resources are finite and resource efficient production processes have to be developed to limit both the ecological footprint and economic costs of future fuels. Exergy analysis is a powerful tool to analyze and optimize thermochemical and biological fuel production processes. In this study, green Fischer-Tropsch fuel production from biomass, CO2 and green electricity is analyzed from an exergetic point of view. Flow-sheeting models of various fuel concepts were developed in Aspen Plus® software and a detailed exergy analysis was carried out with the in-house software tool TEPET (Techno-Economic Process Evaluation Tool). Exergy flow diagrams were created to visualize exergy flows within the processes. Results show that syngas production is responsible for most of the exergy destruction within the fuel production system. Exergetic efficiencies in the range between 37.8 % and 63.5 % were calculated depending on the concept design and product definition. Technology options are discussed to further increase the overall energetic performance. Results can be used as starting point for an exergoeconomic process evaluation to identify optimal process designs characterized by lowest fuel production costs.

Item URL in elib:https://elib.dlr.de/114334/
Document Type:Conference or Workshop Item (Speech)
Title:Exergetic analysis of renewable Fischer-Tropsch fuels production from biomass, CO2 and electricity
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Albrecht, Friedemann Georgfriedemann.albrecht (at) dlr.deUNSPECIFIED
Dietrich, Ralph-Uweralph-uwe.dietrich (at) dlr.deUNSPECIFIED
Date:11 July 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Alternative Fuels; Exergy Analysis; Fischer-Tropsch; Biomass-to-Liquid; Power-to-Liquid
Event Title:ELCAS Conference
Event Location:Nysiros, Griechenland
Event Type:international Conference
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Synthetic Hydrocarbons
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Synth. HC.)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Albrecht, Friedemann Georg
Deposited On:01 Dec 2017 12:52
Last Modified:31 Jul 2019 20:11

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