余热锅炉是FCC催化裂化装置主要的产汽和节能设备,其运行好坏,对保证装置蒸汽压力的平衡和降低装置能耗具有相当重要的意义。 减温器在余热锅炉的运行中起着相当重要的作用。通常减温器设计为表面式,而表面式减温器在运行中存在着经常泄漏、滞后时间长、负荷适应性差、管芯易断裂等问题, Waste heat boiler is the main FCC unit producing steam and energy-saving equipment, and its operation is good or bad, to ensure the balance of steam pressure and reduce device energy consumption is of great significance. Desuperheater in the operation of waste heat boiler plays a very important role. Usually the desuperheater is designed as a surface type, while the surface desuperheater has frequent leakage during operation, long lag time, poor load adaptability and easy die breakage.