PROCESS FOR HYDROGENATION OF MACRO- AND MICROCRYSTALLINE PARAFFINS

摘要

A hydrogenation process for the hydrogenation of macro- and microcrystalline feeds in a mixed bed is disclosed, the first bed containing a catalyst of the demetallization kind, while the second bed contains a hydrotreatment catalyst. During the operation with microcrystalline feed, after the decrease in Saybolt color index, macrocrystalline feed is substituted for microcrystalline feed, whereby is restored the bed catalytic activity which in turn allows the return to the microcrystalline feed, and successively, so that operation is continuous with high Saybolt color index levels maintained for extended periods.