Tars, Fischer-Tropsch process

Another actual pyrolysis-based biorefinery concept is the Bioliq process that was developed at the Karlsruhe Institute of Technology (KIT).Bioliq aims at the production of synthetic fuels such as Fischer-Tropsch diesel and chemicals from biomass. Synthesis based on synthesis gas requires pressures of up to 10 MPa. High-pressure entrained flow gasification provides high-quality tar-free syngas with low methane contents. 

Pyrolysis. In the pyrolysis process for converting coal into oil, high heat is applied to coal in an oxygen-free environment, decomposing it into oil and coal tar, then the oil is subjected to hydrogenation to remove sulfur and other extraneous content before it is processed into fuel sources. Substantially fewer demonstration efforts have been devoted to this process because the amount of oil produced per ton of coal is less than that yielded by the Fischer-Tropsch or Bergius method, and no major bquefaction operation at even the pilot plant level has been based on it. 

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