Hydroisomerization of high density polyethylene wax

Abstract

The hydroisomerization reactions of High Density Polyethylene wax in the presence of catalysts were systematically investigated as a function of processing variables i.e. catalyst concentration(5-9% by wt), temperature (300-400 ℃), hydrogen pressure (300-500 psig) and reaction time (10-240 min). Platinum fluorided alumina catalyst, which contains 0.3% Pt and 0.5% F, was used in the study. The detailed composition of products were determined by GC/MS. Products from the reaction contained C11 – C25 and C11 – C16 as the main component. The changes in product composition as a function of the above processing variables were determined and conditions for preferential production of diesel fuel were established. The reaction that operated at 300 ℃, 300 psig hydrogen pressure, 10 min. and 5% by wt of catalyst is optimal. Products from these conditions were accepted to be low speed diesel.