lower costs and the gas quality under such conditions is likelyto be higher than from solid biomass. Finally transport fuelsynthesis at 50,000 to 200,000 t/d is also commercially realisablefrom the extensive gas-to-liquid plants currently operationalaround the world. Future Energy (now Siemens) hassuccessfully conducted pressurised oxygen blown gasificationtests on both bio-oil and bio-oil/char slurries [189,190].Synthetic hydrocarbons include diesel, gasoline, kerosene,LPG (liquefied Petroleum Gas) and methane (synthetic naturalgas e SNG). These liquid fuels are entirely compatible withconventional fuels in all proportions, but are much cleaner. Atleast in the medium term, these are likely to be the biofuel ofchoice due to the ease of assimilation into the market place. Itis also important that consumers have confidence in transportfuels, and conventional but synthetic hydrocarbon fuels arelikely to cause least consumer resistance, particularly sincethere are well established and well defined quality requirementsthat would normally be applied in existing refineries ifthese are used for finishing products prior to marketing.
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