Fluid catalyst regeneration vessel

Claim 1

A FLUID CATALYST REGENERATION APPARATUS WITH INTERNAL STRIPPING ARRANGEMENT COMPRISING A REGENERATION VESSEL HAVING TOP AND BOTTOM CLOSURES, AIR DISTRIBUTING MEANS NEAR THE BOTOM, AND CONDUIT MEANS FOR WITHDRAWAL OF FLUE GAS NEAR THE TOP; A STANDPIPE ADAPTED FOR THE WITHDRAWAL OF REGENERATED CATALYST FROM SAID APPARATUS, SAID STANDPIPE BEING CONNECTED TO SAID REGENERATION VESSEL; A VERTICALLY MOUNTED CHAMBER WITHIN SSAID VESSEL AND COMPLETELY SEALED FROM THE REMAINING SPACE IN SAID VESSEL, A CATALYST OUTLET PORT NEAR THE BOTTOM,CONDUIT MNEANS AT THE TOP OF SAID CHAMBER ADAPTED FOR THEWITHDRAWAL OF STRIP PING STEAM FROM TOP OF SAID CHAMBER, A VERTICAL RISER LINE OPEN AT THE TOP AND EXTENDING FROM A POINT BELOW SAID VESSEL UP THROUGH THE BOTTOM CLOSURE THEROF AND DABOUCHING WITHIN SAID CHAMBER ABOVE THE HIGHEST LEVEL OF FLUIDIZED CRTALYST THERIN, A SECOND STANDPIPE ARRANGED AND ADAPTED TO DISCHARGE SPENT CATALYST FROM AN OUTSIDE SOURCE INTO SAID RISER LINE BY GRAVITY FLOW; A THIRD AND SEPARATE STANDPIPE ARANGED AND ADAPTED TO DISCHARGE CATALYST FROM SAID REGENERATION VESSELL BY GRAVITRY FLOW INTO SAID RISER LINE A STEAM LINE CONNECTED AT THE BOTTOM OF SAID RISER LINE, BELOW THE POINTS OF THE INTRODUCTION OF THE TWO STREAMS OF CATALYST FROM SAID LATTER TWO STANDPIIPES SAID STEAM LINE BIENG ARRANGED AND ADAPTED TO DISPERSE CATALYST INTRODUCED BY SAID TWO STANDPIPES AND TRANSPORT THE RESULTING DISPERSION UP THROUGH SAID RISER TO THE UPPER SPACE WITHIN SAID CHAMBER ABOVE THE LEVEL OF FLUIDIZED CATALYST THEREIN