International Journal of Petroleum and Gas Engineering ISSN 5675-0715 Vol. 3 (1), pp. 001-007, January, 2016. © International Scholars Journals
Full Length Research Paper
System identification for experimental study for ultra high molecular weight for polyethylene process by using Bi-supported SiO2 / MgCl2 / TiCl4 catalyst
Ahmmed S Ibrehem1* and Hikmat S. Al-Salim2
1Department of Chemical Engineering, University of Technology Mara (UiTM), 40450, Shah Alam Malaysia.
2Chemical and Petroleum Engineering Department, UCSI - University, Cheras, Kuala Lumpur, 56000, Malaysia.
Accepted 16 September, 2015
Abstract
In this work, system identification method is used to capture the reactor characteristics of production rate of polyethylene (PE) based on published experimental data. The identification method is used to measure the percentage effect on the production rate of PE by measuring the effect of input factors of temperature of reaction, hydrogen concentration, and [Al]/[Ti] molar catalyst ratio. Temperature of reaction has big effect which is equal to 52.4% on the output of the system as compared to the other two factors. Also, hydrogen concentration has big effect which is equal to 45.66% on the output of the system. [Al]/[Ti] molar catalyst ratio has big effect which is equal to 1.94%, but less than the reaction temperature and hydrogen concentration. All these results depend on experiment results and these results are very important in industrial plants.
Key words: Catalysts, Ziegler-Natta polymerization, ultracentrifugation, identification.