This thesis addresses the design of a process system for the production of renewable methanol from electrolytic hydrogen and captured carbon dioxide. We compared three routes, namely biomass gasification, biogas conversion and carbon dioxide hydrogenation. The two-stage process with an adiabatic and a tubular reactor is described in detail. The once-through conversion is 30.0 % in the first and 26.9 % in the second reactor, which shows that the process operates close to equilibrium. One tonne of methanol requires 0.20 t of hydrogen, 1.37 t of carbon dioxide, 1.79 t of water and 10.6 MWh of electricity, which is also consistent with the data reported in the literature. Electrolysis is the main energy consumer.
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