Improving the operating conditions of platinum catalysts for paraffins C9–C14 dehydrogenation, taking into account the physical and chemical laws of the process

Abstract

The possibility of regeneration of the catalysts for dehydrogenation С9–С14 paraffins was investigated. The catalysts were prepared on the basis of the active metal (platinum) and promoters supported on Al2O3 or (magnesium) aluminosilicates. The factual data of catalysts runs is used in industrial environments. The stages of coke burning and oxychlorination were investigated using thermogravimetric analysis and a method of mathematical modeling. It is shown that in the way of correct mode of regeneration the lifetime of the catalyst can be extended by 25–30 %. The way of reconstruction of dehydrogenation unit was proposed to allow the regeneration including burning of coke and oxychlorination.