FLUIDIZED BED REACTOR WITH BACK-MIXING FOR DEHYDROGENATION OF LIGHT PARAFFINS

摘要

AN IMPROVED PROCESS AND SYSTEM FOR THE ENDOTHERMIC DEHYDROGENATION OF AN ALKANE STREAM (1) IS DESCRIBED. THE PROCESS AND SYSTEM OF THE PRESENT INVENTION COMPRISE A BACK-MIXED FLUIDIZED BED REACTOR (4). THE ALKANE STREAM (1) IS DEHYDROGENATED IN A SINGLE REACTOR STAGE BY CONTACTING THE ALKANE STREAM (1) WITH A BACK-MIXED FLUIDIZED BED (44) OF CATALYST. DEACTIVATED CATALYST (38) IS WITHDRAWN FROM THE BACK-MIXED FLUIDIZED BED REACTOR (4) AND HEATED TO PRODUCE HOT REGENERATED CATALYST (36). THE HOT REGENERATED CATALYST (36) IS RETURNED TO THE BACK-MIXED FLUIDIZED BED REACTOR (4) AT A SUFFICIENT TO MAINTAIN THE BACK-MIXED FLUIDIZED BED REACTOR (4) AT A SUBSTANTIALLY ISOTHERMAL CONDITIONS.