INVESTIGADORES
BANDONI Jose Alberto
artículos
Título:
CET-2005: Dynamic Modelling and Optimisation of Large-Scale Cryogenic Separation Processes
Autor/es:
M. RODRIGUEZ, A. BANDONI, S. DIAZ
Revista:
Chemical Engineering Transactions
Editorial:
AIDIC
Referencias:
Año: 2005 vol. 6 p. 179 - 184
ISSN:
1974-9791
Resumen:
In this work, the open loop dynamic optimisation of a large-scale natural gas processing
plant is performed. A rigorous differential-algebraic equation (DAE) model has been
formulated to represent main plant units, such as shell and tube heat exchangers, highpressure
separator and demethanizing column. In the shell and tube heat exchangers, the
hot stream partially condenses and equations to consider the partial condensation of the
fluids have been included. A rigorous index one model for the demethanizing column
has been developed. The DAE optimisation problem is solved with a simultaneous
approach, in which both state and control variables are discretised and the original DAE
optimisation model is transformed into a large-scale nonlinear problem (NLP), which is
solved using Sequential Quadratic Programming (SQP) methods. Optimal profiles have
been obtained for main operating variables to achieve an enhanced product recovery.