Thermodynamic analysis of reaction-distillation processes based on piecewise linear models

Analysis of TBA‐Based ETBE Production by Means of an Optimization‐Based Process‐Synthesis Approach

“…The synthesis of ETBE is either realized by a reversible reaction of isobutene (IB) and EtOH or through indirect or direct conversion of tert ‐butyl alcohol (TBA) and EtOH. While process synthesis and design for the first reaction path has been performed by several authors , , less work has been conducted for the second reaction path. However, the second reaction path is of particular interest due to several reasons.…”

A unifying framework for optimization-based design of integrated reaction–separation processes

“…In combination with reactor shortcuts they can be used for a fast screening of the performance of different variants of reaction-separation processes. Ryll et al (2014) coupled equilibrium and conversion reactor models with the ∞/∞-method for distillation to determine the operating points with minimal recycle flows for all flowsheet candidates. Kossack et al (2007) coupled Gibbs reactor models with the thermodynamically sound RBM to estimate an approximate lower bound for operational cost.…”

A Simple Way for Implementing Extraction Columns of Infinite Height in Flowsheet Simulators

“…The assumption of an infinite number of stages leads to a small set of mathematical equations, usually called the pinch equations , , that describe the steady‐state behavior of the apparatus. In the area of distillation, analysis of the pinch equations has lead to a vast number of analysis methods and short‐cut models that have been implemented in software, examples are the boundary value method which is implemented in the simulator Aspen Plus , the rectification body method , , or the ∞/∞‐analysis tools by Ryll et al , , .…”