Fast pyrolysis characteristics of lignocellulosic biomass with varying reaction conditions

A numerical study on biomass fast pyrolysis process: A comparison between full lumped modeling and hybrid modeling combined with CFD

“…3, the biocrude oil yield increases until 773 K and then decreases as the reaction temperature increases when the inlet gas velocity is 18.6 cm/s. This result agrees well with the experimental data (Bok et al, 2012(Bok et al, , 2013Choi et al, 2012;Ellens and Brown, 2012;Kim et al, 2014;Salehi et al, 2011;Wilson et al, 2013). For reference, CFD can resolve the complex multiphase reacting flow fields by changing pyrolysis variables however only volume-averaged temperature can be considered for the lumped model.…”

“…In addition, the maximum reaction rate of char1 decreases as the reaction temperature increases, indicating that the total amount of char1 decreases as the reaction temperature increases. This result matches well with the experimental fast pyrolysis results (Bok et al, 2012(Bok et al, , 2013Choi et al, 2012;Ellens and Brown, 2012;Kim et al, 2014;Salehi et al, 2011;Wilson et al, 2013). For the secondary reactions of NCG2 and char2, the curves of the reaction rates exhibited a similar pattern to those of the primary reaction.…”

“…In fast pyrolysis, the yield of the biocrude oil depends on various factors such as reaction temperature, heating rate, condensation method, residence time, biomass type, reactor type, etc. Therefore, many experimental studies have been conducted to determine the optimum conditions to obtain oil of higher yield and good quality (Bok et al, 2012(Bok et al, , 2013Choi et al, 2012;Ellens and Brown, 2012;Kim et al, 2014;Salehi et al, 2011;Wilson et al, 2013). For numerical studies, basic studies using computational fluid dynamics (hereinafter abbreviated as CFD) were carried out for the fast pyrolysis of biomass (Boateng and Mtui, 2012;Bruchmuller et al, 2012;Choi et al, 2009;Choi, 2011;Mellin et al, 2013;Papadikis et al, 2009a,b,c;Xiong et al, 2013aXiong et al, ,b, 2014Xue et al, 2011Xue et al, , 2012.…”

Catalytic pyrolysis of oil palm mesocarp fibre on a zeolite derived from low-cost oil palm ash

“…Operating parameters are tempered to direct the pyrolysis reaction and ultimately achieve the desired quality and quantity of bio-oils. The typical operating parameters for biomass pyrolysis studies include catalyst loading pattern, biomass particle size, N 2 flow rate, temperature and time [11,12]. The design of efficient and economical catalysts faces the challenges of the industrial-scale application of biomass pyrolysis [13].…”

Bio-Oil Production from Fast Pyrolysis of Cotton Stalk in Fluidized Bed Reactor

“…Park et al [34] investigated the variation of feed size on the product distribution for japanese larch. Choi et al [35] compared the effect of three different sizes in cylindrical bubbling fluidized bed reactor. Heo et al [26] investigated the effect of particle size on miscanthus fast pyrolysis under fluidized bed conditions.…”