TY - JOUR
T1 - Numerical modelling of char formation during glucose gasification in supercritical water
AU - Yukananto, Riza
AU - Pozarlik, Artur
AU - Bramer, Eddy
AU - Brem, Gerrit
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Supercritical water gasification is an efficient thermochemical conversion process to convert wet biomass into a high grade fuel. However, char formation during the conversion might influence the process efficiency and operational stability. Providing insight into char formation behavior during the gasification process will facilitate the utilization of this technology. Computational fluid dynamic modelling is used to study the supercritical water gasification of glucose in a tubular helical reactor, which includes an injector tube to mix glucose feed with pre-heated water to provide fast heating. Validation against experimental data confirms that the developed model performs well. An average discrepancy of 4% is obtained for the total feed conversion whereas the gas yield at high temperature is computed with 15% difference. The char yield trend is also captured well. Sensitivity analysis reveals that the presence of low temperature zone at the injection point plays a significant role in char formation.
AB - Supercritical water gasification is an efficient thermochemical conversion process to convert wet biomass into a high grade fuel. However, char formation during the conversion might influence the process efficiency and operational stability. Providing insight into char formation behavior during the gasification process will facilitate the utilization of this technology. Computational fluid dynamic modelling is used to study the supercritical water gasification of glucose in a tubular helical reactor, which includes an injector tube to mix glucose feed with pre-heated water to provide fast heating. Validation against experimental data confirms that the developed model performs well. An average discrepancy of 4% is obtained for the total feed conversion whereas the gas yield at high temperature is computed with 15% difference. The char yield trend is also captured well. Sensitivity analysis reveals that the presence of low temperature zone at the injection point plays a significant role in char formation.
KW - Char formation modelling
KW - Computational fluid dynamics
KW - Glucose
KW - Sensitivity analysis
KW - Supercritical water gasification
KW - 22/4 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85049454426&partnerID=8YFLogxK
U2 - 10.1016/j.supflu.2018.06.007
DO - 10.1016/j.supflu.2018.06.007
M3 - Article
AN - SCOPUS:85049454426
SN - 0896-8446
VL - 140
SP - 258
EP - 269
JO - Journal of supercritical fluids
JF - Journal of supercritical fluids
ER -