Material selection – seeking advice from experts
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I would like to ask whether it is better to use 312 or 304 for lining the atmospheric and vacuum distillation towers used in processing Russian crude oil, which has a high sulfur content
There is no 312; instead, there is 321. 321 is similar to 304, with 321 containing a slightly higher amount of Ti than 304
Reply to 1# Pang Xue: 321 is good, as it contains Ti which provides better resistance to intergranular corrosion
Reply to 3# yanlianzi: In terms of material selection, 321 is indeed superior, but as a lining, could the likelihood of bubbling occurring with 321 be higher than that with 304? At present, most refineries across the country that process Russian oil choose 304 as the lining, but none of them have undergone maintenance periods. So there are still doubts regarding the choice of material.
Reply to 2# zgj8613: In terms of material selection, 321 is indeed superior, but could the likelihood of bubbling occurring in 321 when used as a lining be higher than that in 304? At present, most refineries across the country that process Russian oil choose 304 as the lining, but none of them have undergone maintenance periods. So there are still doubts regarding the choice of material.