Comparison of cracking kinetics for Kern River 650(degrees)F(sup +) residuum and Midway Sunset crude oil

摘要

Kern River 650(degrees)F(sup +) residuum and Midway Sunset crude oil were examined by micropyrolysis at several constant-heating rates to determine pyrolysis cracking kinetics. Determined by the discrete distribution method, both feeds exhibited principal activation energies of 50 kcal/mol and frequency factors (approximately) 10(sup 13) sec(sup -1). Energy distributions were similar ranging from 45 to 57 kcal/mol. Determined by the shift-in-T(sub max) method, E(sub approx), A(sub approx) for Kern River 650(degrees)F(sup +) and Midway Sunset were 48 kcal/mol, 1.3 X 10(sup 12) sec(sup -1), and 46 kcal/mol, 4.6 X 10(sup 11) sec(sup -1), respectively. These results are similar, but not identical to other kinetic parameters for heavy oils from type II source rocks.