The corrosion survey for the complex unit during the turnaround finds out the minor corrosion in the primary distillation tower (metallurgy: Q235-B) with a coupon corrosion rate of 0.
2
同时指出，针对增设初馏塔以后的情况，应调整装置换热网络及调整分馏塔中、下段的开孔率。
Meanwhile, the author points out that, with the prefractionator, the heat exchanger network of the unit should be rearranged and some holes of the middle and lower trays of the prefract…
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