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Fixed bed with catalyst deactivation: On‐line estimation of deactivation, control, and design
Author(s) -
Hong JanChen,
Lee Hong H.
Publication year - 1985
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.690310218
Subject(s) - catalysis , measure (data warehouse) , process engineering , control theory (sociology) , chemistry , control (management) , process (computing) , process control , kinetics , chemical engineering , computer science , engineering , organic chemistry , physics , database , artificial intelligence , operating system , quantum mechanics
On‐line measurements of temperature and concentration and the global rate for fresh catalyst can be used to estimate a measure of catalyst deactivation. A feedback control policy is obtained from this measure of catalyst deactivation for maintaining the reactor outlet conversion constant with time at a desired level. This feedback control enables one to maintain the desired conversion without any knowledge of deactivation kinetics. These results are applicable to any type of deactivation. The optimal control can easily be taken into consideration for reactor design. This combination of process design and control with due consideration of catalyst deactivation for both is shown to result in a substantial improvement of the reactor performance.