Patent benchmark: selective C3 diene/acetylene hydrogenation (US6495732B1)

Real patent replication: US6495732B1's palladium-catalyzed selective hydrogenation of a cracked-gas C3 stream, removing methylacetylene (propyne) and propadiene down to trace levels while leaving propylene and propane untouched -- the patent's own Example 1 feed (82.7 mol% propylene, 2.37% methylacetylene, 1.30% propadiene) reacted here to '>99.5% removal of both dienes/acetylenes, no propylene-to-propane over-hydrogenation' (propane's mole fraction is unchanged before/after -- the actual selectivity claim the patent is about). Honesty note: the patent discloses conversions/selectivity at specific pilot conditions but no PdO-catalyst rate constants to derive kinetics from, and its real design runs the catalyst as reactive-distillation packing inside one column rather than a separate reactor -- this flowsheet uses two fitted-conversion reactors (conversion set to match the patent's own '95-100%' and 'essentially all... removed' language, not independently measured) ahead of the column, a legitimate simplification of the topology, not the kinetics.