Saudi Arabian Oil Company

Rashid Mohammad Al-Othman

Yuguo Wang

Cemal Ercan

Douglas Patrick Mitchell

Abdul Rahman

Mohammad R Al-Dossary

Timothy Lynn Ely

A process for refining naphtha that results in an improved octane value in a subsequent gasoline blend. Certain embodiments include separating a naphtha feed into light naphtha and heavy naphtha; separating the heavy naphtha into a paraffin stream and non-paraffin stream; introducing the light naphtha to a first isomerization unit, introducing the paraffin stream to a second isomerization unit; introducing the non-paraffin stream to a reforming unit and combining the resulting effluents to form a gasoline blend. The resulting gasoline blend has improved characteristics over gasoline blends that are made without introducing the paraffin stream to a second isomerization unit.

Process development by parallel operation of paraffin isomerization unit with reformer

An apparatus and method are provided for measuring the physical strength and ability of a solid sample, to resist breakdown into fines after repeated cycles of hydration and regeneration of temperatures in excess of 100&deg; C. The test samples are evaluated using an accelerated degradation apparatus that subjects the sample to a predetermined number of timed cycles of wetting/drying under heat and vacuum, and the weight-percent of any fines produced by the degradation of the sample are measured and recorded after a prescribed number of cycles. Specific values are used for predicting potential useful service life, in years of samples from different commercial manufacturers of the same class of product; the resulting data can be used by manufacturers for more effective quality control of production batches.

Accelerated degradation evaluation method and apparatus

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Dhahran, Saudi Arabia

Rashid Mohammad Al-Othman