Simulation of PSA Unit of Jam Petrochemical Company to Obtain an Optimal Value for Cycle Time and Feed Flow Rate for Enhancement of Hydrogen Recovery

In this work a mathematical model is used to simulation of an industrial layered pressure swing adsorption (PSA) unit to purification of hydrogen. This unit consists of five beds, each of them have five layers of different types of adsorbents, H5-2, H2-10, H1, H14 and H1, respectively. The first layer is composed of alumina followed by an impure activated carbon layer and after that three different sorbent layers with different composition of zeolite, mineral binder and quartz are used to purification of hydrogen. The first absorber layer is used as a guard bed. Consequently, the effect of alumina bed on simulation results is not considered. The impurities of mixture are methane, nitrogen and carbon monoxide, carbon dioxide, ethylene and acetylene. In this industrial plant, the outlet stream has about 99.99% purity in hydrogen and the hydrogen recovery is about 75%.Moreover, in order to validation of the simulation, comparison has been accomplished between results of simulation and corresponded experimental datas. This comparison shows that the simulation predicts the operation of the industrial pressure swing adsorption (PSA) unit discussed in this study. The main objective of this study is to obtain an optimal cycle time and feed flow rate for enhancement of hydrogen recovery of PSA unit of Jam petrochemical company

کلیدواژه ها:

Pressure swing adsorption ، adsorption in layered beds ، hydrogen purification ، and gas separation