CHEMCAD BATCH

Batch Distillation Software

General Features:

• Graphical user interface
• Customized reports and PFDs
• Interactive operation
• Users may add their own thermodynamics, components, and/or graphics symbols
• Online help
• Extensive data checking
• Graphical plotting of results
• Online, real-time display of results during calculation
• Calculation interrupt
• Integration into CHEMCAD flowsheets
• Flexible engineering units

Thermodynamics General Features

• Vapor phase association
• Vapor-liquid and liquid-liquid equilibrium
• Physical properties estimation of undefined components

K-Value Options

• Hydrocarbons: Peng-Robinson, Soave-Redlich-Kwong. API SRK, Grayson-Street, Maxwell-Bonnell, BWRS, K-Charts, Regular Solution
• Chemicals: NRTL, UNIQUAC, Wilson, UNIFAC, Margules, Van Laar, Chien-Null, 4-parameter equation of state
• Polymers: UNIFAC for polymers, Flory-Huggins
• Special Systems: amines, sour water, methanol, ethane-ethylene, propane-propylene, partial-pressure (ionic)
• Others: Henry™s Gas Law, Vapor pressure, User K-tables
• Polynomial K-values, user subroutine
• Equation of state for Hydrogen-bonding compounds

ENTHALPIES

• Hydrocarbon and petrochemical: BWRS, Peng-Robinson, SRK, API SRK, Redlich-Kwong, Lee-Kessler
• Chemicals: Latent heat, integral heat of solutioin
• Water: Steam tables
• Other: amines, polynomial, H tables, user subroutine, mass balance only

REGRESSION

• Pure component physical properties regression
• Multiple component VLE and LLE regression
• Regression from UNIFAC
• Regression from infinite dilution data
• Regression of electrolyte data

ENGINEERING DATA

• Physical properties databank for pure components
• BIP database for activity coefficient equations
• Electrolytes database
• Vapor phase association databank
• Interface to corporate database

ELECTROLYTES

• Pitzer and MNRTL methods for strong and weak electrolyte solutions, including the addition of temperature dependent interaction parameters
• Binary and ternary interaction parameters database
• Electrolyte reaction equilibrium database: calculated from Gibbs

COLUMN FEATURES

• Any number of operating steps
• Upto 100 stages
• Reservoir feeds
• Side product accumulators
• Stage heaters and coolers
• Calculation of ambient heat loss
• Stage and condenser hold-ups
• Choice of convergence algorithms

OPERATING STEP(S) OPTIONS

• Start-up from total reflux or from fixed liquid on all stages
• Operating steps specifications may include a variety of specifications for the distillate, boil-up, reflux, condenser, and heat duties.
• Dump accumulators at any time
• Add materials at any time
• Stop criterion may be based on the accumulator, distillate, residual charg, or time
• User-defined pressure profile (linear or non-linear)
• Alternate stop criteria permitted