Simulation, design, and analysis of azeotropic distillation operations

Journal Article · Thu Apr 01 00:00:00 EST 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00016a008· OSTI ID:6535000

Bossen, B S; Joergensen, S B; Gani, R ^[1]

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1. Technical Univ. of Denmark, Lyngby (Denmark)

The computational tools needed for simulation, design, and analysis of azeotropic distillation operations are described. These tools include simple methods to identify the existence of binary and ternary azeotropes and to classify ternary mixtures as homogeneous or heterogeneous. The tools also include more complex methods to compute the phase diagram (or a heterogeneous liquid boiling surface), predict liquid-vapor phase equilibrium, and/or predict liquid-liquid-vapor phase equilibrium for simulations of batch and continuous distillation column operations. Important new features of these tools are the incorporation of a fast and efficient method for test of phase stability in simulation of distillation operations, the ability to handle a large range of mixtures (including mixtures with supercritical compounds), and the ability for computations covering wide ranges of temperature and pressure. On the basis of these tools, simple and consistent design algorithms are developed. The applicability of the design algorithms is verified through process simulation and analysis of the predicted behavior and data from the open literature. Conditions are given for examples illustrating (when and how possible distillation boundaries can be crossed) how multiple steady states can be obtained. Finally, the effect of changes in operating on the dynamic behavior of the azeotropic distillation columns and the sensitivity of design to the prediction of phase equilibria are presented.

• OSTI ID: 6535000
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 32:4; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DISTILLATION EQUIPMENT
COMPUTER-AIDED DESIGN
AZEOTROPE
BINARY MIXTURES
COMPUTERIZED SIMULATION
EQUILIBRIUM
MIXTURES
PHASE DIAGRAMS
PHASE STUDIES
DESIGN
DIAGRAMS
DISPERSIONS
EQUIPMENT
SIMULATION
020400* - Petroleum- Processing
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes