What is PD-Plus ? PD-Plus is a PC-based program for simulating chemical processes, including refinery systems and non-ideal chemicals. It handles multiple-operation flowsheets with recycle streams. An interactive mode provides complete user control of the simulation and rapid evaluation of different process conditions. PD-Plus may be interfaced with or driven by other software packages easily.
Operations All operations allow multiple feed streams and in general can produce multiple products, except where noted. Complete heat balancing is generally done, but can be suppressed where not needed for calculation efficiency.
- Column, rigorous simulation of all types of columns
- Flash, vapor-liquid equilibrium flash, can separate a pure liquid water phase, heat may be added or removed, pressure drop may be given
- Mixer, multiple streams are mixed to form a single product
- Split, multiple product streams are split from the total feed
- Separator, composition of each product is specified by fractions of the feed components to be split off
- Heat Exchanger, a single stream is heated or cooled, or two streams exchange heat
- LNG, Plate Fin Heat Exchanger
- Reactor, multiple equations with extents of reaction are handled
- Compressor, calculates power to compress a gas, permits multiple stages operations with interstage cooling
- Expander, calculates work available from expansion of a gas
- Pump, calculates power and temperature rise for pumping a liquid stream
- Feedback Controller, varies a stream or block parameter to obtain a result
- Calculator, in-line Fortran blocks
- Decanter, separates a feed into two immiscible phases, using fixed K-values or activity coefficents.
Pure components library Components may be retrieved by number from a library. The large library contains properties for over 1500 compounds of all types. Non-library components may be defined by giving their necessary properties. Hydrocarbon fraction pseudocomponents may be defined and the program will estimate their properties from boiling points and gravity. There is a choice of API Technical Data Book, Lee-Kesler and Winn methods for predicting fraction properties. Several different models for predicting VLE, LLE, enthalpy, entropy departures (SRK, RK, Maxwell-Bonnell, Graysoneed, Ideal, Wilson, NRTL, UNIQUAC, Regular Solution, API Sour Water).
Available versions and prices :
- Base version 1990 $
- Custom versions : ask Prode for details
Download the evaluation copy
A evaluation copy is available in [download area].