Estimation of Concentrations in Chemical Systems at Equilibrium Using Geometric Programming

• Main Authors: Saeedeh Ketabi, Fakhri Seyedeyn, Hooman Rashidi
• Format: Article
• Language: English
• Published: University of Tehran 2017-05-01
• Series: Journal of Chemical and Petroleum Engineering
• Subjects: Chemical equilibrium; Gibbs free Energy; Mathematical Modeling; Optimization
• Online Access: https://jchpe.ut.ac.ir/article_62159.html

Geometric programming is a mathematical technique, which has been developed for nonlinear optimization problems. This technique is based on the dual program with linear constraints. Determination of species concentrations in chemical equilibrium conditions is one of its applications in chemistry and chemical engineering fields. In this paper, the principles of geometric programming and its computational method are presented. Also, for a chemical equilibrium, as an example, the concentrations of species for the ammonia synthesis reaction are determined. The obtained results are compatible with the experimental data available in the literature. This leads to the application of the geometric programming to estimate the concentrations in the equilibrium conditions for reactions where the experimental data are not available.