METHOD FOR DRYING A REFRACTORY SUBSTANCE COATED ONTO THE INSIDE WALLS OF REACTORS, CATALYST REGENERATORS AND FLUE GAS DUCTS USED IN THE PROCESS OF FLUID CATALYTIC CRACKING

DISCLOSED IS A METHOD OF DRYING A REFRACTORY (100) APPLIED ON THE INNER WALL OF A WORKING VESSEL (200) INCLUDING A REACTOR (600), A CATALYST REGENERATOR (700) AND A FLUE GAS DUCT USED IN FCC, THUS SHORTENING THE COMMISSIONING TIME AND ENABLING THE EARLY RUNNING OF THE PROCESS, THE METHOD INCLUDING (A) CALCULATING THE TOTAL AMOUNT OF HEAT REQUIRED TO DRY THE ENTIRE REFRACTORY (100) ATTACHED TO THE INNER WALL OF THE VESSEL (200), (B) PROVIDING THE VESSEL WITH THERMOCOUPLES (400), AND PROVIDING OPENINGS (220) OF THE VESSEL (200) WITH A PLURALITY OF GAS BURNERS (300) FOR SPRAYING FLAME AND A PLURALITY OF OPENABLE/CLOSABLE VENT PARTS (240), (C) DRYING THE REFRACTORY (100) USING THE GAS BURNERS (300), (D) MEASURING A TEMPERATURE OF THE WORKING VESSEL (200) USING THE THERMOCOUPLES (400) PROVIDED TO THE VESSEL, AND (E) CONTROLLING SPRAYING THE FLAME BY THE GAS BURNERS (300) AND WHETHER THE VENT PARTS (240) ARE OPENED OR CLOSED, DEPENDING ON THE MEASURED TEMPERATURE.