One of the main motivations for producing syngas from biomass is that numerous commercial processes exist to convert syngas to higher value added chemicals and fuels. Most of these processes have been practiced in the petrochemical industry for decades, significantly reducing the overall technical risk for a bio‐refinery. These processes typically involve catalysts that require high pressure, contaminant free, constant H2/CO ratio syngas. SGT high pressure gasification technology has been designed to produce syngas that meets these requirements.
Modern petroleum refineries maximize the value of a barrel of oil by producing multiple products, such as kerosene, diesel fuel and gasoline. This is in contrast to most current bio‐refineries which produce a single product, as well multiple waste streams that must be remediated. Our fuel processing and refining experience has enabled SGT to develop integrated processing technology that maximizes the yield of valuable products from biomass derived syngas by producing both gasoline and diesel fuel, as well as other valuable co‐products; in other words, a true bio‐refinery. This approach will allow the production of multiple products with multiple revenue streams and will allow for control of outputs based on market and feedstock conditions.
SGTs upgrading technology first converts low H2/CO ratio syngas to gasoline using the Mobil MTG process which tends to increase the H2/CO ratio of the remaining syngas. This higher ratio syngas is then converted to diesel fuel via the Fischer‐Tropsch process. This unique processing scheme allows for significant synergy between the two main products where by yields of high octane gasoline and low sulfur diesel fuel can be optimized to maximize revenue from the bio‐refinery. Remaining process streams can be further utilized to produce other valuable products such as ammonia, electricity, or steam. The bio‐refinery designed by SGT maximizes thermal and carbon efficiency (fraction of carbon into salable product streams) and opens the door for bio‐mass derived transportation fuels to be
produced at a competitive cost.