scholarly journals Study of a Method to Effectively Remove Char Byproduct Generated from Fast Pyrolysis of Lignocellulosic Biomass in a Bubbling Fluidized Bed Reactor

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1407
Author(s):  
Jong Hyeon Ha ◽  
In-Gu Lee

A critical issue in the design of bubbling fluidized bed reactors for biomass fast pyrolysis is to maintain the bed at a constant level to ensure stable operation. In this work, a bubbling fluidized bed reactor was investigated to deal with this issue. The reactor consists of inner and outer tubes and enables in situ control of the fluidized-bed level in the inner-tube reactor with a mechanical method during biomass fast pyrolysis. The significant fraction of biochar produced from the fast pyrolysis in the inner-tube reactor was automatically removed through the annulus between the inner and outer tubes. The effect of pyrolysis temperature (426–528 °C) and feeding rate (0.8–1.8 kg/h) on the yield and characteristics of bio-oil, biochar, and gaseous products were examined at a 15 L/min nitrogen carrier gas flow rate for wood sawdust with a 0.5–1.0 mm particle size range as a feed. The bio-oil reached a maximum yield of 62.4 wt% on a dry basis at 440 °C, and then slowly decreased with increasing temperature. At least 79 wt% of bio-char byproduct was removed through the annulus and was found in the reactor bottom collector. The GC-MS analysis found phenolics to be more than 40% of the bio-oil products.

Energy ◽  
2015 ◽  
Vol 93 ◽  
pp. 1436-1446 ◽  
Author(s):  
Hoang Vu Ly ◽  
Seung-Soo Kim ◽  
Hee Chul Woo ◽  
Jae Hyung Choi ◽  
Dong Jin Suh ◽  
...  

Energy ◽  
2019 ◽  
Vol 179 ◽  
pp. 517-527 ◽  
Author(s):  
Jeong-Woo Park ◽  
Juheon Heo ◽  
Hoang Vu Ly ◽  
Jinsoo Kim ◽  
Hankwon Lim ◽  
...  

Fuel ◽  
2017 ◽  
Vol 207 ◽  
pp. 71-84 ◽  
Author(s):  
Chamseddine Guizani ◽  
Sylvie Valin ◽  
Joseph Billaud ◽  
Marine Peyrot ◽  
Sylvain Salvador

2013 ◽  
Vol 99 ◽  
pp. 23-31 ◽  
Author(s):  
Claudio S. Lira ◽  
Federico M. Berruti ◽  
Pietro Palmisano ◽  
Franco Berruti ◽  
Cedric Briens ◽  
...  

2018 ◽  
Vol 32 (3) ◽  
pp. 3608-3613 ◽  
Author(s):  
Wenran Gao ◽  
Mingming Zhang ◽  
Hongwei Wu

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