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Application of modern control theory to distillation columns
Author(s) -
Hu Y. C.,
Ramirez W. Fred
Publication year - 1972
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.690180304
Subject(s) - distillation , control theory (sociology) , fractionating column , controller (irrigation) , nonlinear system , control variable , optimal control , variable (mathematics) , control system , control engineering , control (management) , mathematics , computer science , engineering , chemistry , mathematical optimization , chromatography , physics , statistics , artificial intelligence , mathematical analysis , electrical engineering , quantum mechanics , agronomy , biology
Modern control theory for systems with load changes is applied to distillation column control. Both linear and nonlinear distillation models are developed and tested. Excellent control is achieved by using an optimal multi‐variable‐proportional‐integral (MPI) controller for systems with unmeasurable disturbances. When the disturbances are measurable an optimal multi‐variable proportional controller with error coordination (MPE) is desirable. Various structures for distillation control have also been investigated.