催化重整装置的氯化铵结盐与腐蚀问题

Salt Deposition of Ammonium Chloride and Corrosion in Catalytic Reformers

由于胜利原油加工量的增加 ,致使催化重整装置原料油中氯含量大幅度上升 (设计值为 10 μg/g ,最高达 74 μg/g) ,因而造成氯化铵结盐并多次发生腐蚀泄漏事故。分析认为 :预加氢进料含水从而造成H2 S -HCl-H2 O腐蚀环境和铵盐水解是造成系统腐蚀的主要原因。与此同时 ,提出了增设并列脱氯罐及提高设备材质等建议。

The increasing amount of Shengli Crude processed in the refinery has contributed to a great increase of chloride in the feed of catalytic reformer (design: 10 μg/g, maximum 74 μg/g), which resulted in the deposition of ammonium chloride salt and led to corrosion leakage of the system. The analysis showed that the main culprit of the corrosion was the H 2S-HCl-H 2O environment caused by the water in the hydrotreater feed and hydrolysis of the ammonium chloride. The installation of dechlorination drum and upgrading of materials were suggested to solve the problems.