Numerical study of the conversion time of single pyrolyzing biomass particles at high heating conditions

Multiscale molecular modeling can be an effective tool to aid the development of biomass conversion technology: A perspective

“…Isolated experimental investigation into pyrolysis reactions and kinetics is extremely difficult due to several factors, such as, fast reactions, short residence times, high temperatures and transport limitations. Additionally, due to lack of knowledge of the reaction chemistry, studies investigating transport effects assumed few pseudo and lumped reactions (with fitted kinetic parameters) for pyrolysis (Blasi, 1996;Di Blasi, 1996;Hagge and Bryden, 2002;Chaurasia, 2004a, 2004b;Chaurasia and Kulkarni, 2007;Zabaniotou and Damartzis, 2007;Sadhukhan et al, 2008;Sreekanth and Leckner, 2008;Sadhukhan et al, 2009;Dufour et al, 2011;Haseli et al, 2011aHaseli et al, , 2011bHaseli et al, , 2012aHaseli et al, , 2012bPeters, 2011;Anca-Couce and Zobel, 2012;Blondeau and Jeanmart, 2012;Lin et al, 2012;Okekunle et al, 2012;Sharma et al, 2014). The prediction capability of such models remains very limited.…”

Modeling kinetics-transport interactions during biomass torrefaction: The effects of temperature, particle size, and moisture content

“…In order to examine these phenomena, robust coupled transient models describing the transport, kinetics, and thermochemistry are required. Numerous 1D and 2D physico-chemical models exist in the literature that describe single particle pyrolysis at high temperatures (400-700 ○ C) [12][13][14][15][16]. However, compared to torrefaction, pyrolysis at these high temperature results in partial to complete devolatilization (70-90 wt%) and different thermal degradation pathways are expected.…”

Lignite temperature distribution during low temperature carbonization process in an industrial width carbonization furnace

“…In previous studies on the coking chamber temperature distribution [6,7,18], the classical heat transfer model did not take into consideration the pyrolytic heat, chemical reaction heat, and condensation heat [29]. The effective thermal conductivity coefficient λ i includes the three stages: the coal/coke hybrid thermal conductivity λ hybrid stage, coal/ coke comprehensive thermal conductivity λ i , coal/coke stage, and semicoke thermal conductivity λ coke stage.…”