INVESTIGATION OF THE PRODUCTION OF GAS OIL OF LOW AROMATIC CONTENT

Abstract

last years. The reasons of this the more and more stricter quality requirements of diesel fuels, partly the extending use of these products as good quality feedstocks of steam cracking for producing light olefins. In Hungary, the growing demand on gas oil of low aromatic content is expected in the near future. Its reason is that the restriction of the polyaromatic content of diesel fuels came into force in the European Union in the year 2000 and the assumed growing in the quantity requirements of ethylene and propylene may cause extended inquiry for this base stock. The experimental results of producing gas oil of low aromatic content are presented. In the first step of the dual stage process the sulphur content of the gas oil was reduced (≤10 ppm), in the second one the hydrodearomatization of the product on Pt/Al2O3 catalyst was studied. The effects of the process parameters (temperature, LHSV, pressure, etc.) on the yield and product quality are discussed. On the base of experimental results the advantageous key process parameters were determined. The possible applications of the obtained gas oils as diesel fuel blending components and the feedstock of the steam cracking were examined.