The challenges and opportunities for integration of solar syngas production with liquid fuel synthesis

James T. Hinkley*, Robbie K. McNaughton, John Pye, Woei Saw, Ellen B. Stechel

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    6 Citations (Scopus)

    Abstract

    Reforming of methane is practiced on a vast scale globally for the production of syngas as a precursor for the production of many commodities, including hydrogen, ammonia and synthetic liquid fuels. Solar reforming can reduce the greenhouse gas intensity of syngas production by up to about 40% by using solar thermal energy to provide the endothermic heat of reaction, traditionally supplied by combustion of some of the feed. This has the potential to enable the production of solar derived synthetic fuels as drop in replacements for conventional fuels with significantly lower CO2 intensity than conventional gas to liquids (GTL) processes. However, the intermittent nature of the solar resource - both diurnal and seasonal - poses significant challenges for such a concept, which relies on synthesis processes that typically run continuously on very stable feed compositions. We find that the integration of solar syngas production to a GTL process is a non-trivial exercise, with the ability to turn down the capacity of the GTL synthesis section, and indeed to suspend operations for short periods without significant detriment to product quality or process operability, likely to be a key driver for the commercial implementation of solar liquid fuels. Projected costs for liquid fuel synthesis suggest that solar reforming and small scale gas to liquid synthesis can potentially compete with conventional oil derived transport fuels in the short to medium term.

    Original languageEnglish
    Title of host publicationSolarPACES 2015
    Subtitle of host publicationInternational Conference on Concentrating Solar Power and Chemical Energy Systems
    EditorsVikesh Rajpaul, Christoph Richter
    PublisherAmerican Institute of Physics Inc.
    ISBN (Electronic)9780735413863
    DOIs
    Publication statusPublished - 31 May 2016
    Event21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015 - Cape Town, South Africa
    Duration: 13 Oct 201516 Oct 2015

    Publication series

    NameAIP Conference Proceedings
    Volume1734
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Conference

    Conference21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015
    Country/TerritorySouth Africa
    CityCape Town
    Period13/10/1516/10/15

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