Rigorous dynamic model of a distillation process and its application

Author

Zhu, Xuemei

Author_Institution

Coll. of Electr. & Autom. Eng., Nanjing Normal Univ., Nanjing, China

fYear

2010

fDate

9-11 June 2010

Firstpage

1076

Lastpage

1080

Abstract

In this paper, the rigorous dynamic model of a distillation process is proposed to realize its dynamic optimization and advanced control. In the rigorous model, the component compositions of vapour and liquid phases, the vapour and liquid flow rates, the temperature, pressure, and liquid holdup are state variables of each tray. The rigorous model is a set of nonlinear differential and algebraic equations (DAEs) which is solved by conventional Newton-Raphson algorithm with orthogonal collocation discretization. The proposed model is with high precision and its maximum error is less than 3%.The model can be applied to further study of dynamic optimization and advanced control of distillation processes.

Keywords

Newton-Raphson method; differential algebraic equations; distillation; nonlinear differential equations; process control; Newton Raphson algorithm; component composition; distillation process; dynamic optimization; liquid flow rate; nonlinear algebraic equation; nonlinear differential equation; orthogonal collocation discretization; rigorous dynamic model; vapour flow rate; Automatic control; Automation; Chemical industry; Differential algebraic equations; Error correction; Feeds; Fluid flow; Nonlinear equations; Process control; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Automation (ICCA), 2010 8th IEEE International Conference on

Conference_Location

Xiamen

ISSN

1948-3449

Print_ISBN

978-1-4244-5195-1

Electronic_ISBN

1948-3449

Type

conf

DOI

10.1109/ICCA.2010.5524130

Filename

5524130