Influence of reaction conditions on bio-oil production from pyrolysis of construction waste wood

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.…”

Combining Mo–Cu/HZSM-5 with a two-stage catalytic pyrolysis system for pine sawdust thermal conversion

“…Table 3 shows that the use of the catalyst reduced the yield of oil phase while increasing the gas yield. This was caused by the catalyst promoting secondary deoxygenation reactions of pyrolytic vapors, such as decarbonylation and decarboxylation [31]. For the reason that the temperature in the pyrolysis stage were the same in different treatment, the yields of bio-char from different treatments displayed no significant difference.…”

Upgrading of 4-methylanisole in a catalytic reactor with electric discharges: A novel approach to O-removal from bio-oils

“…Finding sustainable renewable carbon resources to replace the traditional fossil fuels is of importance due to various reasons such as depletion of petroleum-based sources, fluctuations of fossil fuel prices, environmental and health concerns and global warming [1][2][3][4][5][6]. The lignocellulosic (LC) biomass is a massive renewable resource for production of chemicals and renewable fuels [7][8][9].…”