Select
the button on the left to download a fully functional, 14-day trial
(version
1.8.5).

*MixProps *is
a two phase vapor-liquid equilibrium, thermodynamic, and transport
property
calculator for technical professionals. Both **pure**
and **multicomponent
systems** are supported with a comprehensive collection of
physical property
methods. *MixProps*
is for use on **MS Windows (tm)** operating
systems.

For a pure component
thermodynamic physical property application, learn about our other
software
product, *PhysProps *here.

*MixProps*
is extremely easy to use and includes the following features:

An intuitive user interface.

Equations of state supported: RK, SRK, API-SRK, PR, PR-78.

EOS binary interaction parameters use and specification is fully
supported.

Pure component physical property data drawn from the extensive *PhysProps*
data base.

A full range of thermophysical and transport properties for each phase
is generated.

T-P Flash (isothermal) routine employed is extremely accurate and
stable.

Also computes bubble
and dew point pressures/temperatures.

Quality print-outs of generated data available.

Saving cases and calculations for future reference.

Cut/Copying/Pasting is supported to allow importing/exporting data to
other
applications.

Thermodynamic models
include the following equations of state (EOS):
Redlich-Kwong, Soave-Redlich-Kwong,
API-SRK, Peng-Robinson, and the 1978 modification of the PR equation of
state. Binary interaction coefficient input is also supported
to
allow the user to fine-tune the data the EOS model produces and allow
the
EOS to be used for increasingly more non-ideal systems.

*MixProps*
is the perfect software tool for professionals in the chemical, natural
gas, and petroleum industries. **You** can
now easily and reliably
calculate thermodynamic and transport properties and use the results to:

- Use as an everyday tool to determine
mixutre physical properities.
- Size equipment and instrumentation.
- Check column and heat
exchanger performance.
- Solve difficult vapor-liquid
equilibrium problems.
- Compute multi-component physical
properites for pressure relief valve calculations.
- Determine emissions for EPA
requirements for volatile organic compounds.

In addition, dew and bubble points can be
computed in accordance to **API
14.1**! Natural
gas professionals will appreciate the
ease with
which standard gas analysis problems can be solved.

Engineers no longer need an expensive
process simulator to compute properties. The basic routine
for vapor-liquid equilibrium calculations is the temperature-pressure
(T-P) flash
routine. All of the well known process simulation
applications available today use a T-P flash routine
modified to provide results which are a compromise between speed and
accuracy. **Within these process simulation
applications, computational
speed is emphasized and accuracy is compromised.**
Speed is emphasized simply because of the large number of T-P
flash calculations
needed to produce a reasonable, overall result for the process
simulation model...even for small, simple simulation
models.

This is not the case
with *MixProps*.
The T-P flash routine used in *MixProps*
was designed for one purpose...unparalleled accuracy. A
rigorous
T-P flash is performed and the routine used generates a precise
solution
regardless of machine time involved. These accurately
computed phase
splits and component compositions, coupled with the *PhysProps*
database of pure component properties, generates an optimum set of
physical
property data limited only by the pure component data and thermodynamic
model used. With *MixProps*,
inaccurate and compromised property values commonly found in process
simulators
is a thing of the past.

The output generated
by *MixProps*
consists of a comprehensive set of thermodynamic, thermophysical and
transport
properties...all instantly available and in a wide variety of
engineering
units:

- Equilibrium vapor and
liquid compositions
- Equilibrium K-Values
- Flash phase fractions
- Mixture molecular weights
- Mixture critical volume/temperature/pressure
- Phase compressibility
factors
- Mixture densities
- Heats of Vaporization
- Mixture heat capacities
- Phase enthalpy/entropy
- Mixture viscosity/thermal
conductivity
- Mixture heat capacity
ratio
- Mixture Joule-Thompson
coefficient
- Sonic velocity through
mixtures
- Mixture liquid surface
tension

Example Problems (the *MixProps*
installation contains the setup to these examples):

1. Natural
Gas Transport Example

2. Debutanizer
Example

3. Pump
Example