1 research outputs found
Methane Conversion to Syngas for Gas-to-Liquids (GTL): Is Sustainable CO<sub>2</sub> Reuse via Dry Methane Reforming (DMR) Cost Competitive with SMR and ATR Processes?
Carbon dioxide is a greenhouse gas
and is obtained as a waste via
burning various forms of fuels. Syngas is an intermediate in large-scale
long-chain hydrocarbon (C<sub>10</sub>–C<sub>20</sub> alkanes
and alcohols) production processes via Fischer–Tropsch (FT)
synthesis, typically to obtain high quality fuels. Thus, it is of
particular interest to engineer syngas production processes for FT
that can consume various combustion process waste CO<sub>2</sub> in
the process and thus partially contribute to the sustainable carbon
neutral fuel synthesis. In this work, a quantitative economic comparison
of five alternative processes is presented for the production of synthesis
gas with a hydrogen-to-carbon monoxide ratio of 2, which is suitable
for feeding to the Fischer–Tropsch gas-to-liquid process. Combinations
of steam methane reforming (SMR), dry methane reforming (DMR), autothermal
reforming (ATR) and reverse water gas shift (RWGS) are explored. An
amine absorber/stripper system is used for carbon dioxide removal.
The effects of the cost of natural gas and of liquid oxygen and the
magnitude of a potential carbon tax are demonstrated. With current
prices of raw materials, the configuration with the lowest total annual
cost (TAC) features a system composed of both SMR and DMR reactors