Deyvisson Lopes | UFCG - Universidade Federal de Campina Grande (original) (raw)

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The control of an ideal reactive distillation column is compared with that of a similar, but some... more The control of an ideal reactive distillation column is compared with that of a similar, but somewhat diierent, real chemical system, the production of methyl acetate. Similarities and diierences are observed. Three control structures are evaluated for both systems. A control structure with one internal composition controller and one temperature controller provides eeective control of both systems for both high and moderate conversion designs. A two-temperature control structure is eeective when the system is overdesigned in terms of number of reactive trays, holdup and/or catalyst load. Direct control of product purity for the high-conversion/high-purity design is diicult because of system nonlinearity and interaction. Tray temperature control avoids the nonlinearity problem. ?

The control of an ideal reactive distillation column is compared with that of a similar, but some... more The control of an ideal reactive distillation column is compared with that of a similar, but somewhat diierent, real chemical system, the production of methyl acetate. Similarities and diierences are observed. Three control structures are evaluated for both systems. A control structure with one internal composition controller and one temperature controller provides eeective control of both systems for both high and moderate conversion designs. A two-temperature control structure is eeective when the system is overdesigned in terms of number of reactive trays, holdup and/or catalyst load. Direct control of product purity for the high-conversion/high-purity design is diicult because of system nonlinearity and interaction. Tray temperature control avoids the nonlinearity problem. ?

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