Feed molecular properties explain cracking results

Bruce A. Lerner, Frank L. Himpsl Engelhard Corp. Iselin, N.J. Although feeds may have similar global properties, catalytic cracking conversion results may differ due to different feed molecular properties. In a recent study, Engelhard determined that only by understanding the molecular characteristics of a resid was it possible to select the proper catalyst to maximize conversion to favorable products and minimize coke and gas. Engelhard examined two feeds with similar global characteristics but quite distinct molecular distributions. In recent years, the refining industry has moved to processing residual feeds in the catalytic cracker. In fact, the majority of rece...

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