An automated control system was developed
for the bench-scale evaluation
of continuous catalytic regeneration (CCR) naphtha reforming catalysts.
Deactivation of these catalysts is too rapid for fixed bed operation,
and regenerating the catalyst continually is not feasible on bench
scale. To emulate the commercial process, a solution was required
which would allow catalyst evaluation at a constant research octane
number (iso-RON). Because changes are too fast for manual adjustment
(especially when using Fischer–Tropsch naphtha), automated
adjustment of process conditions was required. This was achieved through
the use of simple matrix algebra, semiautomated gas chromatography
and on-line near-infrared (NIR) analyses. Commercial catalysts with
very small activity and reformate yield differences, could be compared
and their RON versus yield correlations determined. Product samples
large enough for engine research octane number (RON) analyses could
also be collected at steady state. Through the use of multidisciplinary
analytical and advanced process control techniques, substantial improvement
of bench-scale piloting methodology in naphtha reforming was obtained.
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