In the last 30 years, there have been major developments inthe fast pyrolysis technology, which converts solid biomass toenergy-dense, transportable liquid, together with solid co-products(bio-char) and non-condensable hydrocarbon gases. Fast pyroly-sis can produce high liquid yields of up to 75% [3], based on thetype of biomass, through rapid thermal decomposition of lignocel-lulosic biomass in the absence of oxygen. However, fast pyrolysisof lignin is not widely investigated because of the difficulties facedduring the continuous feeding and processing of lignin in flu-idized bed reactors. Due to its low melting point (between 150 and200◦C), lignin is usually found to melt even before entering thereactor, causing blockage of the feeding systems. Other problemencountered during lignin pyrolysis is the slow reactivity, result-ing in the formation of a liquid phase in the reactors leading to thebed agglomeration and subsequent defluidization.