The Hynol process is proposed to meet the demand for an economical process for methanol production with reduced CO2 emissions. This new process consists of three reaction steps: (a) hydrogasification of biomass, (b) steam reforming of the produced gas with additional natural gas feedstock, and (c) methanol synthesis from the hydrogen and carbon monoxide produced during the previous two steps. The H2-rich gas remaining after methanol synthesis is recycled to gasify the biomass in an energy neutral reactor so that there is no need for an extensive oxygen plant as required by commercial steam gasifiers. Recycling gas allows the methanol synthesis reactor to perform at a relatively lower pressure than conventional while plant still maintains high methanol yield. Energy recovery designed into the process minimizes heat loss and increases the process thermal efficiency. If the Hynol methanol is used as an alternative and more efficient automotive fuel, an overall reduction of CO2 emission can be achieved compared to the use of conventional gasoline fuel. A preliminary economic estimate shows that the total capital investment for a Hynol plant is 40 % lower than for a conventional biomass gasification plant. The methanol production cost is 0.43 USD/gal for a 1085 Mio gal/yr Hynol plant which is competitive with current US methanol and equivalent gasoline prices. Process flowsheet and simulation data using biomass and natural gas as cofeedstocks are presented. The Hynol process can convert any condensed material, especially municipal solid waste, to produce methanol.


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    Title :

    Hynol - an economical process for methanol production from biomass and natural gas with reduced CO2 emission


    Contributors:
    Dong, Y. (author) / Steinberg, M. (author)

    Published in:

    Publication date :

    1997


    Size :

    7 Seiten, 1 Bild, 4 Tabellen, 11 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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