Abstract
The development of OSN Designer is presented: a software tool, which enables commercially available and open source suites of chemical process simulation software for organic solvent nanofiltration (OSN) process modelling and simulation. A modelling framework, comprising state of the art membrane transport models, membrane module flow dynamics, and material balance equations over entire units, was embedded in custom unit operations (UOs) for batch concentration (BC), constant volume semi-batch (CVS), and steady-state (SS) filtration. The numerical solutions of the resulting systems of equations were programmed in MATLAB and implemented in several process simulation environments such as Aspen Plus, HYSYS and COFE. The computer aided process engineering open (CAPE OPEN) standards for communication between chemical engineering software components were used to ensure interoperability amongst MATLAB UOs, process simulation environments and different thermophysical properties servers. Three example simulations using OSN Designer were carried out in the environment of Aspen Plus with dual aims. Firstly, OSN Designer was validated through comparison to available experimental data. Secondly, the example simulations addressed important topics such as energy efficiency of OSN compared to evaporation, use of pore flow or solution diffusion membrane transport models, and effect of thermodynamic non-ideality on the overall process performance.
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