ZERO-DIMENSIONAL MODEL OF A DIMETHYL ETHER (DME) PLANT BASED ON GASIFICATION OF TORREFIED BIOMASS

Lasse Røngaard Clausen, Brian Elmegaard, Niels Houbak, Robert J. Braun

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    Abstract

    A model of a DME fuel production plant was designed and analyzed in Aspen Plus. The plant produces DME by catalytic conversion of a syngas generated by gasification of torrefied woody biomass. Torrefication is a mild pyrolysis process that takes place at 200-300°C. Torrefied biomass has properties similar to coal, which enables the use of commercially available coal gasification processing equipment. The DME plant model is integrated with a steam cycle that utilizes waste heat from the plant and covers the on-site electricity consumption. The plant model predicts a fuel production efficiency of 67 % (LHV) from torrefied biomass to DME and 70 % (LHV) if the exported electricity is included. When accounting for raw, untreated biomass, the efficiency for DME production is reduced to about 60 %.
    Original languageEnglish
    Title of host publicationProceedings of SIMS 50 : Modeling of Energy Technology
    Publication date2009
    Pages229-235
    ISBN (Print)978-87-89502-88-5
    Publication statusPublished - 2009
    Event50th International Conference of Scandinavian Simulation Society - Fredericia, Denmark
    Duration: 7 Oct 20098 Oct 2009
    Conference number: 50

    Conference

    Conference50th International Conference of Scandinavian Simulation Society
    Number50
    Country/TerritoryDenmark
    CityFredericia
    Period07/10/200908/10/2009

    Keywords

    • syngas
    • DME
    • CO2 capture
    • dimethyl ether
    • biorefinery
    • biofuel
    • torrefication
    • gasification

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