The serious corrosion problem at low temperature could be found in atmospheric-vacuumdistillationunit, especially in the atmosphere overhead 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。
2
The revamp of internal construction of oil water separator in atmospheric-vacuumdistillationunit from first generation to the third generation is detailed.
主要介绍了常减压蒸馏装置油水分离器内部结构由第一代改进到第三代的详细情况。
3
It is a guide for the vacuum deep cut revamping on atmospheric and vacuumdistillationunit.