Process Analysis of Chemical Looping Gasification of Biomass for Fischer–Tropsch Crude Production with Net-Negative CO₂ Emissions: Part 1

Large-scale biofuel production plants require an efficient gasification process that generates syngas of high quality (with minimal gas contaminants and inert gases) to minimize the extent cleaning processes required for liquid production. This work presents modeling chemical looping (CLG) The CLG is integrated with a Fischer–Tropsch synthesis (FTS) produce (FT) crude net-negative CO2 emissions, enabling system-level analyses this novel biomass-to-liquid process. resembles indirect in interconnected circulating fluidized bed reactor, where instead material, solid-oxygen carrier, such as mineral ores rich iron or manganese oxides, used. oxygen carrier particles undergo oxidation reduction air reactor fuel respectively, thereby providing heat gasification. uses data from experiments performed steel converter slag investigates its potential when different downstream trains subsequent primary objective quantifying evaluating performance CLG–FT plant. Syngas energy content 12 MJ/Nm3 (lower heating value basis) predicted cold efficiency 73%. CO2/CO ratios, higher than biomass gasification, are also raw produced; thus, there exists opportunity capture biogenic relatively lower penalty stages. quantifies other key indicators, recovery potential, negative emission capacity, FT A 100 MWth plant produces roughly 677–696 barrels per day crude, emissions 180 kilotonnes annually.