Coking and cracking behaviour of heavy oil derived from the Stuart deposit

✍ Scribed by P. Udaja; G.J. Duffy; C.J.R. Fookes; M.D. Chensee

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 546 KB
• Volume: 72
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(93)90090-o

✦ Synopsis

The coking and cracking behaviour of a heavy oil fraction derived from Stuart shale oil was investigated in a moving packed-bed reactor. Experiments were performed to evaluate the conversion of heavy oil into lower-boiling products, coke and gases when contacted with fully burnt shale ash and sand. The oil products were characterized by elemental composition, boiling point distribution and n.m.r. spectrometry. The experimental data show wide variations in the stoichiometry, depending on the relative contributions of thermal cracking and coking/catalytic cracking reactions. N.m.r. analyses of the oil products provide insight into the mechanisms of heavy oil coking and cracking. The 1-ene:internal-ene ratio of the product oil provides a reliable indicator of the relative importance of these two reactions.