Co-Feeding of Natural Gas in Pyrolysis Plants Producing Biofuels - GHG Savings and Economic Impact
Paper in proceedings, 2014

A major limitation in pyrolysis of biomass is the upgrading of the liquid product (bio-oil) for meeting the requirement of subsequent use as transportation fuel. This paper proposes a process (the IH2 process) based on combined hydropyrolysis and hydroconversion for in-situ upgrading of the liquid fraction into transportation fuels. In the hydropyrolysis reactor biomass and hydrogen react producing a liquid product with very low oxygen content. Although the process concept has been demonstrated, the source of hydrogen is a weakness of the process. The techno-economic assessment of the IH2 process assumed the use of the gas stream from the hydropyrolysis (off-gas) as the source for hydrogen. This assumption should be feasible for an nth of a kind plant, but it is not suitable for a first-of-a-kind plant, where the technical limitations of off-gas reforming would increase the risk of investment. In this study, we analyze a modified IH2 process using co-feeding of natural gas for the installation of a first-of-a-kind plant in Europe. The results are favorable for the co-feeding of natural gas in hydropyrolysis plants.



sustainability criteria

economical aspects


Pedro Haro

Luis Cutz

Henrik Thunman

Chalmers, Energy and Environment, Energy Technology

Filip Johnsson

Chalmers, Energy and Environment, Energy Technology

22nd European Biomass Conference and Exhibition

1145 - 1150

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Sustainable development

Innovation and entrepreneurship

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Energy Engineering

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