TY - JOUR
T1 - Operating strategies for the oxidative steam reforming (OSR) of raw bio-oil in a continuous two-step system
AU - Arandia, A.
AU - Remiro, A.
AU - Valle, B.
AU - Bilbao, J.
AU - Gayubo, A.G.
PY - 2017
Y1 - 2017
N2 - This work aimed to establish a suitable O
2 feeding strategy for the hydrogen production by oxidative steam reforming (OSR) of raw bio-oil in a reaction system with two-steps: thermal treatment (at 500 °C, for the controlled deposition of pyrolytic lignin) followed by the reforming of the volatile stream in a fluidized bed reactor. Specifically, the effect of co-feeding O
2 before or after the thermal step was analyzed for oxygen-tocarbon molar ratio (O/C) in the 0.34-0.67 range. The catalytic step was kept at 700 °C, steam-to-carbon molar ratio (S/C) = 6.0, and space-time = 0.6 g
catalyst h(g
bio-oil)
-1. When O
2 is co-fed before the thermal step, there is a partial combustion of both, pyrolytic lignin and oxygenates, thus resulting a lower amount of oxygenated compounds entering the reforming reactor, although the composition of these oxygenates is not affected by the presence of O
2 in the thermal step. As a result, a noticeable lower H
2 yield was obtained when O
2 is fed before the thermal treatment, although catalyst deactivation rate was similar to that obtained when co-feeding O
2 after thermal treatment. Consequently, in the OSR of bio-oil in a two-step system, O
2 must be co-fed after the thermal treatment step; in order to avoid bio-oil oxygenates oxidation prior to the reforming reaction.
AB - This work aimed to establish a suitable O
2 feeding strategy for the hydrogen production by oxidative steam reforming (OSR) of raw bio-oil in a reaction system with two-steps: thermal treatment (at 500 °C, for the controlled deposition of pyrolytic lignin) followed by the reforming of the volatile stream in a fluidized bed reactor. Specifically, the effect of co-feeding O
2 before or after the thermal step was analyzed for oxygen-tocarbon molar ratio (O/C) in the 0.34-0.67 range. The catalytic step was kept at 700 °C, steam-to-carbon molar ratio (S/C) = 6.0, and space-time = 0.6 g
catalyst h(g
bio-oil)
-1. When O
2 is co-fed before the thermal step, there is a partial combustion of both, pyrolytic lignin and oxygenates, thus resulting a lower amount of oxygenated compounds entering the reforming reactor, although the composition of these oxygenates is not affected by the presence of O
2 in the thermal step. As a result, a noticeable lower H
2 yield was obtained when O
2 is fed before the thermal treatment, although catalyst deactivation rate was similar to that obtained when co-feeding O
2 after thermal treatment. Consequently, in the OSR of bio-oil in a two-step system, O
2 must be co-fed after the thermal treatment step; in order to avoid bio-oil oxygenates oxidation prior to the reforming reaction.
UR - http://www.scopus.com/inward/record.url?scp=85021667793&partnerID=8YFLogxK
U2 - 10.3303/CET1757037
DO - 10.3303/CET1757037
M3 - Article
SN - 1974-9791
VL - 57
SP - 217
EP - 222
JO - Chemical Engineering Transactions
JF - Chemical Engineering Transactions
ER -
