Fluidized solids hydrocarbon conversion system with an improved solids transfer between the reaction and stripping zones

Claim 1

IN A HYDROCARBON CONVERSION PROCESS WHEREIN A HYDROCARBON REACTANT IS PASSED THROUGH A DENSE FLUIDIZED BED OF FINELY DIVIDED CATALYST IN A REACTION ZONE TO CONVERT SAID HYDROCARBON TO DESIRED PRODUCTS, THEREBY CONTAMINATING THE CATALYST WITH PRODUCTS OF REACTION AND THE CONTAMINATED CATALYST IS PASSED TO A DENSE FLUIDIZED BED OF CATALYST IN A STRIPPING ZONE TO REMOVE PRODUCTS OF REACTION WITH A STRIPPING GAS AND SAID STRIPPING ZONE FORMS A PART OF SAID REACTION ZONE AND IS SEPARATED FROM SAID HYDROCARBON CONVERSION SECTION BY A COMMON PARTITION IN THE LOWER PORTION OF SAID REACTION ZONE, THE IMPROVED METHOD FOR TRANSFERRING CATALYST FROM THE DENSE FLIDIZED CATALYST BED EMPLOYED IN THE REACTION ZONE TO THE DENSE FLUIDIZED CATALYST BED IN THE STRIPPING ZONE, WHICH COMPRISES DEFLUIDZING A PORTION OF THE HYDROCARBON CONVERSION CATALYST IN THE REACTION ZONE ADJACENT TO THE PARTITION, PASSING THE DEFLUIDIZED CATALYST DOWNWARDLY ALONG SAID PARTITION AND INTO AN ELONGATED PASSAGEWAY EXTENDING THROUGH SAID PARTITION, INTO SAID STRIPING ZONE