包括低压精馏塔、加压精 馏塔、塔釜再沸器、塔顶冷凝器和辅助冷凝器；
The system comprises a low pressure rectifying tower, a pressurizing rectifying tower, a tower kettle reboiler, an overhead condenser and an auxiliary condenser;
常减压装置存在较为严重的低温位腐蚀问题，尤其是常压塔顶冷凝器腐蚀问题更为严重。
The serious corrosion problem at low temperature could be found in atmospheric-vacuum distillation unit, especially in the atmosphere overhead condenser.
某炼油厂的蒸馏装置塔顶冷凝器在使用不到六个月即出现腐蚀破坏，本文对失效的原因进行了分析，得出油气中的卤素是腐蚀破坏的主要原因。
The causes of corrosion cracking failure of the overhead condenser tubes after operated less than 6 months were analyzed. The content of halogen in the oil was the main reason of leakage.
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