User Meeting 2013 Agenda - Chemstations Europe

Solids

Solids can be treated as permanent solids or in thermodynamic equilibrium with liquid and / or vapor phase. All solids can be assigned specific particle size distributions, which can be changed by solid unit operations such as a filter or a crusher. Salts and their solubility in various solvents can be rigorously simulated with the electrolytic thermodynamics.

Engineering Units

Fast and error-free conversion of physical units. In addition to the defined unit sets such as SI units or Old English Units customized sets can be created. Flowcharts, plots and reports can be converted into other unit sets at any time

Help Topics

A comprehensive help system with easy to find information from simulation modes of individual unit operations or thermodynamic adjustment options to a detailed documentation of all available computational models, partly with equations and resources. Individual chapters of help can be accessed directly from the corresponding input dialogs (e.g., for Unit Op specifications).

Excel Data Map

With this native integration with MS Excel, all Unit Op and stream flow parameters can be read from tables and sent to a flow sheet before starting a calculation, and likewise, to a table after the calculation has been completed. This tool is also used for the Excel Unit Operation. Which makes it easy to integrate models for unit operations in MS Excel into a flow sheet without any programming effort.

Reaction Rate Regression

With this tool, parameters for reaction kinetics, such as order of reaction, rate constant and activation energies can easily be determined from measured data.

Costing

For many unit operations, easily modifiable cost functions are included. Thus, using current cost indices (CEPCI from Chemical Engineer Magazine), a first estimate of the cost of the main equipment can be made.

Convergence Parameters

Here, numerous parameters and methods can be edited, to influence the recycle convergence. Selection of a sequential or a simultaneous solution of the recycle problem and switching between flow and pressure driven simulation are also possible. With sequential solution, the course of all state variables can be observed during the iterations.

Steady State / Dynamics

With just one click you can switch between steady state and dynamic simulation modes.

Database Component

In the flow sheets, component data for more than 2000 pure components is accessible. With the implemented DIPPR database, 39 constant properties and the parameters for the calculation of 15 temperature-dependent properties per component are available. Numerous fallback and alternative methods ensure that rigorous process simulations can be carried out even with minimal component data.

Thermodynamic Settings

More than 30 different thermodynamic models for the calculation of phase equilibria are available. In addition to the usual gE models and equations of state, it is also easy to add and use custom K-value models. Also, there are numerous special settings for special conditions (e.g. pointing correction at high pressures) or material systems (e.g. vapor phase association for acetic acid). And for the calculation of enthalpy, more than 10 models are available. The usual models are also provided for additional component data and mixing rules. With local thermodynamic settings, different models can be applied within the same flow sheet.