Optimization of Biogas to Syngas via Combined Super-Dry and Tri-Reforming. Analysis of Fischer-Tropsch Fuels Production

This work presents an optimization approach to compare tri-reforming and super dry reforming for the production of syngas. Next, this section is integrated with the synthesis of Fischer-Tropsch liquids at low and high temperatures. The optimization of the tri-reforming technology is carried out introducing a parametric approach to evaluate different O-2:Biogas ratios. Tri-reforming is always selected to produce syngas. The biogas composition depends on the purpose of the syngas including ethanol, FT or methanol production. The large amount of hydrogen required in the last option is achieved introducing more steam in the WGS reactor in the tune-up section. In the second part of the work, the integration of previous reforming types with FT processes suggests that the operation in the LT mode is more profitable ($3.3/gal of diesel) than the HT ($5.4/gal). However, both are far from other production costs reported in literature that reach up to $0.34/gal.