Simulation and optimization of an industrial PSA unit
AUTOR(ES)
Barg, C., Ferreira, J.M.P., Trierweiler, J.O., Secchi, A.R.
FONTE
Brazilian Journal of Chemical Engineering
DATA DE PUBLICAÇÃO
2000-12
RESUMO
The Pressure Swing Adsorption (PSA) units have been used as a low cost alternative to the usual gas separation processes. Its largest commercial application is for hydrogen purification systems. Several studies have been made about the simulation of pressure swing adsorption units, but there are only few reports on the optimization of such processes. The objective of this study is to simulate and optimize an industrial PSA unit for hydrogen purification. This unit consists of six beds, each of them have three layers of different kinds of adsorbents. The main impurities are methane, carbon monoxide and sulfidric gas. The product stream has 99.99% purity in hydrogen, and the recovery is around 90%. A mathematical model for a commercial PSA unit is developed. The cycle time and the pressure swing steps are optimized. All the features concerning with complex commercial processes are considered.
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