Functionalities

Expand Your Simulation Capabilities with Chemcad Advanced Functionalities

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This is the backbone of the software, used to design new processes and optimize existing ones under continuous operating conditions.

Mass and Energy Balances: Automatically calculates heat and material balances (HMB) across complex plant flowsheets.
Extensive Unit Operations Library: Includes built-in models for distillation columns, chemical reactors (kinetic, equilibrium, Gibbs), heat exchangers, compressors, pumps, valves, and piping networks.
Process Optimization: Features built-in optimization tools to maximize yield, minimize energy consumption, or look for specific economic trade-offs based on user-defined constraints.

Moves beyond steady-state to model how a chemical system changes over time.

Operability and Safety Studies: Simulates plant startup, shutdown, and upset conditions (e.g., power failure or runaway reactions).
Batch Processing: Models batch distillation, batch reactors, and semi-batch operations, which are critical for pharmaceuticals and specialty chemicals.
PID Control Loop Tuning: Allows engineers to add controllers, control valves, and sensors to the flowsheet to test control strategies before physical implementation.

Accurate chemical modeling depends entirely on underlying physics. CHEMCAD includes a massive, deeply integrated thermodynamic engine:

Pure Component Database: Contains physical property data for thousands of chemical compounds.
Thermodynamic Methods: Supports industry-standard property packages including Predictive PR (Peng-Robinson), SRK, NRTL, UNIQUAC, and UNIFAC for vapor-liquid equilibrium (VLE), liquid-liquid equilibrium (LLE), and electrolytes.
Data Regression: Allows engineers to input raw laboratory data to regress and calculate unique binary interaction parameters for custom chemical mixtures.

An add-on utility that goes beyond simple heat balancing to perform rigorous thermal and hydraulic design of heat exchangers.

Shell-and-Tube / Air-Cooled / Plate: Designs and rates equipment against industry standards (like TEMA).
Fouling & Pressure Drop: Calculates localized fluid velocities, pressure drops, and fouling factors to ensure the physical exchanger won’t fail or plug.