TC Lines

Vapour liquid equilibrium data of 4500 binaries from experiments and TC lines

When you need accurate

vapour-liquid equilibrium data,

you can count on TC Lines NZ Ltd.

TC Lines NZ Ltd. can offer VLE data with such accuracy that has never been available globally until now. It avoids the need for substantial experimentation wherever you or your clients are involved in the separation of mixtures using distillation towers.

TC line and PPM

TC Lines NZ Ltd. supplies accurate vapour-liquid equilibrium (VLE) data and liquid-liquid equilibrium (LLE) data. We predict such results using thermodynamic consistency (TC) lines. Using the TC lines of 4500 binary systems, we established a pure prediction method (PPM) for binary VLE.



Our products

(1)   VLE data predicted from the PPM can be supplied using e-mails. An example is shown for the 2-butanone + water binary.

(2)   High-precision UNIFAC parameters can be supplied for the 4500 binaries found in the literature.

(3)   Binary Txy VLE data at 1.013 bar, calculated usin the TC lines, are supplied.


(1) See definition, which will be applied to VLE and LLE data.

(2) Be aware the limits of conventional consistency tests.


Prices, publications and patents

Contact us

Dr. Satoru Kato, Professor Emeritus (Tokyo Metropolitan Univ.)

C.E.O of TC Lines NZ Ltd.

Location: Avonhead, Christchurch, New Zealand