Chemical Engineer's Workstation. Versatile and
easy-to-use steady-state process simulator, including equipment sizing and costing
options.
General
Friendly interface. Input data and
graphics are totally integrated in CHEMCAD. The flow diagram is always on the screen for
immediate reference. The menu bar works from left to right, to guide you through the
problem solving process. On-line help is always available. Process Flow Diagrams are
flexible and complete.
Interaction. CHEMCAD
interacts with
you to answer your questions smoothly and efficiently. After all, chemical engineering is
more than just flowsheet simulation — it's answering a range of questions from simple to
complex. To do this you need a program that thinks the way you think.
Flexibility. Users may add their own
equipment icons, graphical symbols, and own chemical components. User can build their own
equipment models and new calculation programs with an easy programming language.
The flowsheet
You draw the flowsheet first, enter the data into it,
calculate, get the results.
Over 40 classes of equipment models, among others:
Distillation, absorption,
and stripping, including models for refining towers and for highly
non-ideal systems. Reactive distillation. Extraction. Flash
drums, also for liquid-liquid separation.
Reactors, including kinetic and equilibrium models.
Heat exchangers, which can be a part of the integrated
distillation column model. Also for LNG processing. Fired heaters.
Pumps, compressors, expanders,
valves, pipe simulator including piping fittings
and two-phase flow.
Solid-fluid operations (thirteen classes)
Unit operations are connected with streams. The stream properties can be
calculated and plotted/printed independently from unit operations.
Thermodynamics and Physical Property Data
Over 30 K-Value options, among others:
Ideal thermodynamic models: Raoult's and Henry's Laws
Equations-Of-State: Peng-Robinson, Soave-Redlich-Kwong,
Grayson-Streed, Maxwell-Bonnell, Regular Solution, Benedict-Webb-Rubin-Sterling, and
modifications of these
Activity-Coefficient models: UNIFAC, UNIQUAC, NRTL,
Wilson, PSRK, GMAC, van Laar, Margules, and modifications of these
Enthalpy options matched to K-Value options. Steam
Tables built-in
Industry-standard DIPPR databank for
over 1800 pure compounds
Industry-standard DECHEMA databank of
binary interaction parameters
Interface to TRDC interaction
parameter libraries: the user can order Recommended Data Sets of physical properties and
interaction parameters for selected component system, for top-critical calculations or for
systems where data are missing
Solids
Electrolytes
Expert system to automatically set up the ionic system
Pitzer method for weak electrolytes
Modified NRTL method for strong electrolytes
Databank of binary and ternary interaction parameters
New electrolytes and parameters can be added
Electrolyte calculations work transparently with all
unit operations.
Calculations and analyses
CHEMCAD
Recycle loops of any complexity can be solved easily
Convergence methods: Direct Substitution, Wegstein,
Dominant Eigenvalue
Sequential-modular or matrix solving approach
Sensitivity Analyses for up to 2 independent parameters
and up to 12 dependent variables
Optimizer can maximize or minimize Objective Function
for 10 independent variables
Regression
Pure components physical properties regression
Multiple component VLE and LLE regression for
interaction parameters
Electrolyte regression based on multiple properties
