TY - JOUR
T1 - Application of a three-stage approach for modeling the complete period of catalyst deactivation during hydrotreating of heavy oil
AU - Elizalde, Ignacio
AU - Ancheyta, Jorge
N1 - Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.
PY - 2014/12/15
Y1 - 2014/12/15
N2 - Modeling the catalyst deactivation due to hydrodeasphaltenization (HDAsph), hydrodemetallization (HDM) and hydrodesulfurization (HDS) reactions with time-on-stream (TOS) was carried out by using a model that considers three deactivation stages: start-of-run (SOR), middle-of-run (MOR) and end-of-run (EOR). Experimental data of kinetics, intra-particle mass transfer and conversion affected by deactivation phenomena were obtained from laboratory scale reactor. Loss of activity was studied at constant operating conditions of temperature, pressure, liquid hourly space velocity (LHSV) and H2-to-oil ratio for a range of time-on-stream. It is found that different deactivation patterns are obtained depending on the considered reaction. It is predicted that catalyst exhibits higher rate of deactivation for HDS than for HDM at long TOS.
AB - Modeling the catalyst deactivation due to hydrodeasphaltenization (HDAsph), hydrodemetallization (HDM) and hydrodesulfurization (HDS) reactions with time-on-stream (TOS) was carried out by using a model that considers three deactivation stages: start-of-run (SOR), middle-of-run (MOR) and end-of-run (EOR). Experimental data of kinetics, intra-particle mass transfer and conversion affected by deactivation phenomena were obtained from laboratory scale reactor. Loss of activity was studied at constant operating conditions of temperature, pressure, liquid hourly space velocity (LHSV) and H2-to-oil ratio for a range of time-on-stream. It is found that different deactivation patterns are obtained depending on the considered reaction. It is predicted that catalyst exhibits higher rate of deactivation for HDS than for HDM at long TOS.
KW - Heavy oil
KW - Hydrotreatment
KW - Three-stage deactivation
UR - http://www.scopus.com/inward/record.url?scp=84908504609&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2014.02.073
DO - 10.1016/j.fuel.2014.02.073
M3 - Artículo
AN - SCOPUS:84908504609
SN - 0016-2361
VL - 138
SP - 45
EP - 51
JO - Fuel
JF - Fuel
ER -