分析加工高酸值原油常减压蒸馏装置管道腐蚀的特点，探讨其主要管道的选材原则。
Analyze features of corrosion of pipeline for high acidic crude oil of atmospheric and vacuum distillation unit, probe major principle for selection of piping material.
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.
常减压装置的防腐蚀工作对于其长周期运行极为重要。
The corrosion prevention played a vital role in ensuring the long-term operation of the atmospheric-vacuum distillation unit.
辽河原油逐年来酸值增高、密度变大、含盐和含硫量有所增加，常减压塔顶冷凝冷却系统的“HCI - H_2S - H_2O”腐蚀日趋严重。
With increasing acid value, density, salt and sulfur in Liaohe Crude, The HCI-H2SO4-H2O corrosion in overhead condensing system of atmospheric-vacuum unit was deteriorating.
辽河原油逐年来酸值增高、密度变大、含盐和含硫量有所增加，常减压塔顶冷凝冷却系统的“HCI - H_2S - H_2O”腐蚀日趋严重。
With increasing acid value, density, salt and sulfur in Liaohe Crude, The HCI-H2SO4-H2O corrosion in overhead condensing system of atmospheric-vacuum unit was deteriorating.
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