Hydroforming process and apparatus

Claim 1

A PROCESS FOR REFORMING NAPHTHA FRACTIONS WHICH COMPRISES PREHEATING A NAPHTHA FEED STOCK AND HYDROGEN TO A TEMPERATURE OF UP TO 800* F., MIXING FINELY DIVIDED HYDROFORMING CATALYST PARTICLES AT A TEMPERATURE OF ABOUT 875 TO 950* F. WITH THE PREHEATED NAPHTHA FEED STOCK AND HYDROGEN, PASSING THE MIXTURE UPWARDLY THROUGH A PLURLAITY OF REACTION ZONES IN SERIES, SEPARATING REACTION PRODUCTS FROM SPENT CATALYST IN THE UPPERMOST REACTION ZONE, WITHDRAWING SPENT CATALYST IN THE UPPERMOST REACTION BURNING CARBONACEOUS DEPOSITS FROM THE SPENT CATALYST PARTICLES TO REGENERATE THE CATALYST, PASSING THE HOT REGENERATED CATALYST PARTICLES DOWNWARDLY THROUGH THE PLURALITY OF REACTION ZONES IN INDIRECT HEAT EXCHANGE RELATION TO THE REACTION MIXTURE IN THE SEVERAL REACTION ZONES AND COUNTERCURRENTLY TO THE DIRECTION OF FLOW OF THE REACTION MIXTURE IN ORDER TO HEAT THE REACTION MIXTURE IN THE SUCCESSIVE REACTION ZONES TO PROGRESSIVELY HIGHER TEMPERATURES AND COOL THE REGENERATED CATALYST, TREATING THE COOL REGENERATED CATALYST WITH HYDROGEN AND THEN RECYCLING THE REGENERATED CATALYST TO THE LOWERMOST REACTION ZONE.