| 摘要 |
[Task] To provide a crude treatment system capable of treating crude containing a comparatively large content of a corrosive material. [Means for Resolution] A primary distillation tower 11 fractionates first crude into a target fraction. A secondary distillation tower 21 which fractionates second crude having a corrosive material content greater than that of the first crude into a light fraction of which the content of the corrosive material is an amount not causing corrosion in the primary distillation tower 11 and a heavy fraction as the remainder thereof. Also, a light fraction supply line supplies the light fraction from the secondary distillation tower 21 to the primary distillation tower 11 so as to treat the light fraction in the primary distillation tower 11. Here, the secondary distillation tower 21 and the supply line for supplying second crude to the secondary distillation tower 21 are made from a material having corrosion resistance with respect to the corrosive material under circumstances in which the secondary distillation tower 21 and the supply line contact with the second crude and the heavy fraction. |
