Currently only bubbling fluidized beds (BFBs) and circulating fluidised beds (CFBs) can be applied for commercial-scale production of biofuel.[ Eoin Butler et al., 2011] That said certain reactors are more suitable for commercial application than others (see Fig. 2.1), and this has been reflected in commercialization efforts. To the reactor heat transfer medium and from the heat transfer medium to the pyrolysis biomass are two requirements for heat transfer in reactor. [A.V. Bridgwater, 1999]