98/00182 Progress of technologies of gasoline production in crude oil refineries

• Publisher: Elsevier Science
• Year: 1998
• Weight: 209 KB
• Volume: 39
• Category: Article
• ISSN: 0140-6701
• DOI: 10.1016/s0140-6701(97)85465-3

✦ Synopsis

This work aimed to convert aromatic compounds into high octane compounds that are low in aromatics. The model compound used here was 1-methylnaphthalene.

Experiments were performed in single-and twostage systems and the compound was treated with various catalysts at different reaction conditions in the single-stage operation.

The highest conversion to isoparaffins and substituted cyclohexanes and cyclopentanes, 40.1% was achieved with a NiW/SiOz-A1203 catalyst at 325°C and 1000 psig in 10 h with a feed to catalyst ratio of 10 to 1. In the two-stage operation, lmethylnaphthalene was hydrogenated to methyldecalins at 325°C with almost 100% conversion in the first stage, using a NiMo/Ti02-A1203 catalyst. In the second stage, the methyldecalins underwent hydrocracking reactions at different reaction conditions using various catalysts. PdiREX exhibited the best result for the production of high octane gasoline components without aromatics at 300-325°C.