ESTIMATION OF HYDROCRACKING OF C-C BONDS DURING HYDROPROCESSING OF OILS

A novel method of estimating hydrocracking performance for an oil was developed using a simple group-additivity method. Data from 13C n.m.r., simulated distillation analysis, density, and elemental analyses were used to calculate the average number of carboncarbon bonds per molecule of oil. Using an example set of hydroprocessed products from a coker gas oil, the percentage of carboncarbon bonds actually cracked was calculated from the number of carboncarbon bonds in the feed and the products. The method was not sensitive to effects from catalytic reactions, unlike methods based on the reduction in molecular weight or boiling range. © 1990.