Method and means for contacting subdivided catalyst particles successively with a reactant stream and regenerating gas streams

Claim 1

A METHOD FOR EFFECTING ENDOTHERMIC CONVERSION OF A HYDROCARBONACEOUS REACTANT STREAM IN THE PRESENCE OF SUBDIVIDED SOLID CATALYST PARTICLES WHICH COMPRISES, PASSING SAID REACTANT STREAM THROUGH A DOWNWARDLY MOVING BED OF SUBDIVIDED CATALYST PARTICLES WITHIN A CONFINED REACTION ZONE UNDER CONVERSION CONDITIONS, WITHDRAWING RESULTANT FLUID REACTION PRODUCTS FROM SAID REACTION ZONE, SEPARATELY DISCHARGING CONTAMINATED CATALYST PARTICLES FROM THE LOWER PORTION OF THE REACTION ZONE AND COMMINGLING THEM WITH A HOT TRANSFER GAS STREAM, FLUIDIZING AND LIFTING SAID PARTICLES BY SAID TRANSFER GAS STREAM UPWARDLY IN A CONFINED PATH EXTENDING THROUGH AND IN INDIRECTHEAT EXCHANGE WITH THE CATALYST BED IN SAID REACTION ZONE TO THE UPPER PORTION OF AN ELEVATED REGENERATION ZONE, MAINTAINING A SUFFICIENTLY LOW CONCENTRATION OF FREE OXYGEN IN SAID TRANSFER GAS TO BURN A MINOR PORTION OF THE COMBUSTIBLE CONTAMINANTS FROM THE PARTICLES IN SAID CONFINED PATH, DISCHARGING A MIXED SOLIDS-GAS STREAM SUBSTANTIALLY DEVOID OF FREE OXYGEN FROM SAID CONFINED PATH INTO THE UPPER PORTION OF SAID REGENERATION ZONE AND PERMITTING THE SOLIDS TO FALL TO THE TOP OF A DESCENDING BED OF PARTICLES MAINTAINED WITHIN SAID REGENERATION ZONE, SUPPLYING A FREE OXYGEN-CONTAINING REGENERATING GAS TO THE LOWER PORTION OF SAID REGENERATION ZONE AND PASSING IT THEREIN UPWARDLY UNIFORMLY THROUGH SAID DESCENDING BED AT A RATE AND WITH A FREE OXYGEN CONCENTRATION WHICH MAINTAIN SAID DESCENDING BED IN A COMPACT MOVING FORM AND CONCOMITANTLY EFFECT THE SUBSTANTIAL COMBUSTION OF THE CONTAMINATING DEPOSIT ON THE CATALYST PARTICLES IN SAID COMPACT MOVING BED AND THE MAINTENANCE OF A GASEOUS ATMOSPHERE IN THE UPPER PORTION OF SAID REGENERATION ZONE HAVING A LOWER FEEE OXYGEN CONTENT THAN WOULD SUSTAIN AFTER-BURNING ABOVE SAID BED, WITHDRAWING HOT COMBUSTION GASES FROM THE UPPER PORTION OF SAID REGENERATION ZONE AT A POINT ABOVE THE COMPACT MOVING BED THEREIN, PASSING A STREAM OF SAID HOT COMBUSTION GASES TO THE INLET OF SAID CONFINED PATH IN AN AMOUNT CONSTITUTING AT LEAST A PREDOMINATE PORTION OF SAID HOT TRANSFER GAS STREAM, AND CONTINUOUSLY DISHCHARGING HOT REGENERATED CATALYST PARTICLES FROM THE LOWER PORTION OF SAID REGENERATION ZONE BY GRAVITY FLOW INTO THE UPPER PORTION OF SAID REACTION ZONE FOR CONTACT WITH THE HYDROCARBONACEOUS REACTANT THEREIN.

Claim 2

A METHOD FOR EFFECTING ENDOTHERMIC CONVERSION OF A HYDROCARBONACEOUS REACTANT STREAM IN THE PRESENCE OF SUBDIVIDED SOLID CATALYST PARTICLES WHICH COMPRISES, PASSING SAID REACTANT STREAM THROUGH A DOWNWARDLY MOVING BED OF SUBDIVIDED CATALYST PARTICLES WITHIN A CONFINED REACTION ZONE UNDER CONVERSION CONDITIONS, WITHDRAWING RESULTANT FLUID REACTION PRODUCTS FROM SAID REACTION ZONE, SEPARATELY DISCHARGING CONTAMINATED CATALYST PARTICLES FROM THE LOWER PORTION OF THE REACTION ZONE AND COMMINGLING THEM WITH A HOT TRANSFER GAS STREAM, FLUIDIZING AND LIFTING SAID PARTICLES BY SAID TRANSFER GAS STREAM UPWARDLY IN A CONFINED PATH EXTENDING THROUGH AND IN INDIRECTHEAT EXCHANGE WITH THE CATALYST BED IN SAID REACTION ZONE TO THE UPPER PORTION OF AN ELEVATED REGENERATION ZONE, MAINTAINING A SUFFICIENTLY LOW CONCENTRATION OF FREE OXYGEN IN SAID TRANSFER GAS TO BURN A MINOR PORTION OF THE COMBUSTIBLE CONTAMINANTS FROM THE PARTICLES IN SAID CONFINED PATH, DISCHARGING A MIXED SOLIDS-GAS STREAM SUBSTANTIALLY DEVOID OF FREE OXYGEN FROM SAID CONFINED PATH INTO THE UPPER PORTION OF SAID REGENERATION ZONE AND PERMITTING THE SOLIDS TO FALL TO THE TOP OF A DESCENDING BED OF PARTICLES MAINTAINED WITHIN SAID REGENERATION ZONE, SUPPLYING A FREE OXYGEN-CONTAINING REGENERATING GAS TO THE LOWER PORTION OF SAID REGENERATION ZONE AND PASSING IT THEREIN UPWARDLY UNIFORMLY THROUGH SAID DESCENDING BED AT A RATE AND WITH A FREE OXYGEN CONCENTRATION WHICH MAINTAIN SAID DESCENDING BED IN A COMPACT MOVING FORM AND CONCOMITANTLY EFFECT THE SUBSTANTIAL COMBUSTION OF THE CONTAMINATING DEPOSIT ON THE CATALYST PARTICLES IN SAID COMPACT MOVING BED AND THE MAINTENANCE OF A GASEOUS ATMOSPHERE IN THE UPPER PORTION OF SAID REGENERATION ZONE HAVING A LOWER FEEE OXYGEN CONTENT THAN WOULD SUSTAIN AFTER-BURNING ABOVE SAID BED, WITHDRAWING HOT COMBUSTION GASES FROM THE UPPER PORTION OF SAID REGENERATION ZONE AT A POINT ABOVE THE COMPACT MOVING BED THEREIN, PASSING A STREAM OF SAID HOT COMBUSTION GASES TO THE INLET OF SAID CONFINED PATH IN AN AMOUNT CONSTITUTING AT LEAST A PREDOMINATE PORTION OF SAID HOT TRANSFER GAS STREAM, AND CONTINUOUSLY DISHCHARGING HOT REGENERATED CATALYST PARTICLES FROM THE LOWER PORTION OF SAID REGENERATION ZONE BY GRAVITY FLOW INTO THE UPPER PORTION OF SAID REACTION ZONE FOR CONTACT WITH THE HYDROCARBONACEOUS REACTANT THEREIN.