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Effect of nonuniform activity on hydrodemetallation catalyst
Author(s) -
Limbach K. W.,
Wei James
Publication year - 1988
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690340214
Subject(s) - catalysis , deposition (geology) , enhanced data rates for gsm evolution , metal , chemistry , chemical engineering , materials science , engineering , metallurgy , geology , organic chemistry , paleontology , telecommunications , sediment
Abstract A model is developed to qualitatively predict the effect of a nonuniform activity distribution on the total quantity of metal deposited in hydrodemetallation catalysts. A fixed catalyst support system is assumed and no restrictions are placed on local or overall catalytic activity in seeking an optimal solution that maximizes the amount of contaminant metal deposition over the useful catalyst life. Results indicate that deposition capacity could be substantially increased by a nonuniform activity profile in which the activity at the catalyst center is higher than that at the outer edge. The shape of the optimum activity profile is presented along with practical design improvements.