Abstract
The catalytic cracking of vacuum distillates with West Siberia atmospheric resids was investigated to determine the optimal ratio of components in the blend and to define the influence of the quantity of added resid on the product yield and quality. The feedstocks tested included a low-sulfur hydrotreated vacuum distillate and a medium-sulfur atmospheric resid. Data on the quality, hydrocarbon composition, viscosity, distillation behavior, vanadium and nickel content, and sulfur content were determined and compared against a resid from a Texas crude. Physicochemical properties were determined for the naphtha and diesel fuel cuts obtained. Coke yields are also assessed.
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