Two stage fluidized hydroforming

Claim 1

IN THE HYDROFORMING OF NAPHTHAS, THE IMPROVEMENT WHICH COMPRISES PROVIDING A FIRST REACTION ZONE CONTAINING A BED OF FLUIDIZED PLATINUM-CONTAINING CATALYST HAVING AN AVERAGE PARTICLE SIZE SUITABLE FOR FLUIDIZATION, MAINTAINING HYDROFORMING CONDITIONS OF TEMPERATURE AND PRESSURE IN SAID REACTION ZONE, WITHDRAWING THE CATALYST AND GASIFORM MATERIAL FROM THE SAID FIRST REACTION ZONE, PASSING THEM THROUGH A REHEATING ZONE WHEREBY THEY ARE HEATED TO A TEMPERATURE ABOVE THAT PREVAILING IN THE FIRST REACTION ZONE, THEREAFTER PASSING THE REHEATED MATERIALS TO A SECOND REACTION ZONE MAINTAINED AT A TEMPERATURE HIGHER THAN THAT IN THE FIRST REACTION ZONE, CAUSING THE CATALYST IN THE SAID SECOND REACTION ZONE TO FORM A WELL-FLUIDIZED BED, PERMITTING THE REACTANTS TO REMAIN RESIDENT IN THE SAID SECOND REACTION ZONE FOR A SUFFICIENT PERIOD OF TIME TO EFFECT THE DESIRED HYDROFORMING REACTION, WITHDRAWING REACTION VAPORS OVERHEAD FROM SAID SECOND REACTION ZONE, COOLING THE SAID REACTION VAPORS TO CONDENSE NORMALLY