TY - JOUR
T1 - Effect of bed material density on the performance of steam gasification of biomass in bubbling fluidized beds
AU - Soria-Verdugo, Antonio
AU - Von Berg, Lukas
AU - Serrano, Daniel
AU - Hochenauer, Christoph
AU - Scharler, Robert
AU - Anca-Couce, Andrés
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Steam gasification of lignocellulosic biomass in a bubbling fluidized bed reactor was analyzed by means of the composition of the producer gas, including tars, and temperature distribution in the reactor. The catalytic and sorbent effect of sepiolite particles was studied by comparison of the tars generated with those produced in a bed of olivine, widely used in biomass gasification applications. Sepiolite has a lower particle density, which influences the forces acting on fuel and char particles and leads to a more homogeneous distribution of them in the dense bed during the gasification process. Fluidized beds of sepiolite particles contribute to increase the heating value of the producer gas and its hydrogen content compared to gasification under the same operating conditions in olivine beds. Furthermore, the tar yield is around 25% lower when gasifying in sepiolite beds, reducing the requirement of secondary methods for tars removal. Long-term gasification tests were also conducted in a sepiolite bed to evaluate the mitigation of the sorbent/catalytic effect of sepiolite with time.
AB - Steam gasification of lignocellulosic biomass in a bubbling fluidized bed reactor was analyzed by means of the composition of the producer gas, including tars, and temperature distribution in the reactor. The catalytic and sorbent effect of sepiolite particles was studied by comparison of the tars generated with those produced in a bed of olivine, widely used in biomass gasification applications. Sepiolite has a lower particle density, which influences the forces acting on fuel and char particles and leads to a more homogeneous distribution of them in the dense bed during the gasification process. Fluidized beds of sepiolite particles contribute to increase the heating value of the producer gas and its hydrogen content compared to gasification under the same operating conditions in olivine beds. Furthermore, the tar yield is around 25% lower when gasifying in sepiolite beds, reducing the requirement of secondary methods for tars removal. Long-term gasification tests were also conducted in a sepiolite bed to evaluate the mitigation of the sorbent/catalytic effect of sepiolite with time.
KW - Biomass steam gasification
KW - Fluidized bed
KW - Olivine
KW - Sepiolite
KW - Tars
UR - http://www.scopus.com/inward/record.url?scp=85071560870&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2019.116118
DO - 10.1016/j.fuel.2019.116118
M3 - Article
AN - SCOPUS:85071560870
SN - 0016-2361
VL - 257
JO - Fuel
JF - Fuel
M1 - 116118
ER -