Biomass gasification high pressure process

Vogel, F., Hildebrand, F. (2002) Catalytic hydrothermal gasification of woody biomass at high feed concentrations. Paper 123, 4th International Symposium On High Pressure Process Technology and Chemical Engineering, EFCE, Venice Italy. 

At Pacific Northwest Laboratory we have been testing the use of high-moisture biomass (marine and fresh-water biomass, post-harvest field residues and food processing wastes) in a thermochemical conversion system to produce useful fuels. Although the main focus of the work (19) has been gasification (catalytic production of methane) we have also performed a limited number of tests under high-pressure liquefaction conditions. 

The biomass gasification conducted in the presence of hydrogen is a catalytic process that allows the production of hydrocarbons. It requires high pressures, high temperatures, and hydrogen, the conventional catalyst is the C0-M0/AI2O3. There are various other processes which will not be described in this chapter. See the literature for these processes (Naik et al., 2010 Bridgwater, 2011). 

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. 

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