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前言由于含硫原油产量不断增多,炼油厂设备腐蚀日益严重和突出。近几年来,南京炼油厂主要加工胜利、濮阳、任丘原油的混合油,硫含量较高为0.35%左右。因而使其供给热裂化装置的原料油(减压二、三线油)中的硫化物及有机酸受热裂解产生腐蚀性物质。造成该装置分馏塔塔顶冷凝器(冷—6)及油水分离器(容—1)等部位严重腐蚀,常有因腐蚀穿孔而被迫停工的现象发生。
Preface Due to the increasing production of sulfur-bearing crude oil, refinery equipment corrosion is increasingly serious and prominent. In recent years, the main refinery in Nanjing refinery processing, Puyang, Renqiu crude oil mixture, a higher sulfur content of about 0.35%. Thus, the sulfides and organic acids in the feedstock oil supplied to the thermal cracking unit (depressurized second and third line oils) are thermally cracked to produce a corrosive substance. Resulting in the device fractionator overhead condenser (cold -6) and oil-water separator (volume-1) and other parts of the serious corrosion, often due to corrosion perforation and forced to stop the phenomenon occurred.