The bioliq® Entrained‐Flow Gasifier – A Model for the German Energiewende

Abstract

The bioliq process was developed at the Karlsruhe Institute of Technology (KIT) for the production of synthetic fuels from dry biomass residues. Biofuels of high quality are produced sustainably in various process steps. This multistage process not only considers the necessity for decentralized supply of the biomass, but also the necessity for a large centralized fuel synthesis that benefits from economy of scale. The entire process chain of pyrolysis, gasification, gas cleaning, and synthesis is operated on a pilot scale at KIT. The high-pressure entrained-flow gasifier converts the biomass, pretreated in a fast pyrolysis step, into a synthesis gas for the production of gasoline in the subsequent synthesis step. The first experimental results from the pilot plant are presented in this paper.

Wood Gasification. Influence of Process Parameters on the Tar Formation and Gas Cleaning

“…These relations shall be investigated more closely in future but clearly suggest the advantage of using torrefied material as preferred feed for gasification to reduce tar content in gas. Such approach was used in entrained flow gasification process for liquid fuel production developed in (Eberhard et al, 2020).…”

On the Mathematical Modelling of a Moving-Bed Counter-Current Gasifier Fuelled with Wood-Pellets

“…Instead, in the mathematical modelling [17,24], the kinetic data were taken from the literature (see Table 1 in Di Blasi [17] and Table 2 in Mandl et al [24]). For example, the stoichiometric coefficients that appear in Equation (13) were determined by Di Blasi [17] from the work of Roberts and Clough [50], where a different wood was examined. The coefficients were retained in Mandl et al [24] and in this work.…”

“…Gomez-Barea and Leckner [10] reviewed the fluidized-bed technology, Higman [11] reviewed the entrained-flow gasifiers, while Chopra and Jain [12] reviewed fixed-bed technology. The most recent developments in Germany include bioliq entrained-flow technology [13,14] and TU Freiberg entrained-flow gasifier [15].…”

Entrained Flow Gasification of Polypropylene Pyrolysis Oil

“…Such a concept has already been developed by the Karlsruhe Institute of Technology (KIT), Germany, for the production of synthetic fuels from biomass residues [ 42 ]. The concept, bioliq ® , is based on decentralized pyrolysis of dispersed biomass to produce a bioslurry with high energy density, which is thereafter fed to a centralized entrained flow gasification plant with downstream synthesis steps [ 43 ]. Plastic wastes are, similar to biomass residues, usually widely distributed and, due to its low energy density, the transportation becomes expensive.…”

“…Studies in the current scientific literature are usually about gasification of bio-based pyrolysis oil. For example, from straw- and wood derived pyrolysis oil [ 43 , 44 ], or the co-gasification of biomass derived pyrolysis oil together with Kraft black liquor from the pulp and paper industry [ 45 , 46 , 47 ].…”