Title: Applications of the Peng-Robinson equation of state using Mathcad

Authors: Lixin Liu; Guili Liu; Wei Zhang

Addresses: College of Automobile and Transportation, Qingdao Technological University, Qingdao, Shandong, 266520, China ' College of Automobile and Transportation, Qingdao Technological University, Qingdao, Shandong, 266520, China ' College of Computer Engineering, Qingdao Technological University, Qingdao, Shandong, 266520, China

Abstract: The Peng-Robinson equation of state (PR EOS) can accurately describe both the liquid and vapour phase. We present several applications of this equation of state with the aid of Mathcad, including estimation of pure component properties, computation of vapour-liquid equilibrium (VLE) and isobaric diagram for a binary mixture. In addition, high-pressure chemical-equilibrium calculations are performed. An example of an adiabatic flash computation is also presented.

Keywords: vapour-liquid equilibrium; VLE; Peng-Robinson; equation of state; EOS; Mathcad; liquid phase; vapour phase; isobaric diagrams; binary mixtures; high pressure chemical equilibrium; adiabatic flash computation.

DOI: 10.1504/IJCSE.2016.077736

International Journal of Computational Science and Engineering, 2016 Vol.13 No.1, pp.98 - 108

Received: 09 Dec 2013
Accepted: 09 Apr 2014
Published online: 14 Jul 2016 *

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