The invention provides an atmospheric and
vacuum distillation device and an atmospheric and
vacuum distillation method of high acid-content
crude oil. The device comprises an atmospheric
tower, an atmospheric
kiln, a vacuum
tower and a vacuum
kiln, wherein the atmospheric
tower comprises a tower body, a tower tray and stuffing. The tower tray of the atmospheric tower has more than 40
layers, wherein the tower body of the atmospheric tower between the 40th layer of the tower tray and the tower top is made of metallic composite of one or a plurality of
Monel, 0Cr13, 316L, SAF2205, SAF2507 and SAF 2304 and
carbon steel, the tower tray is made of one or a plurality of
Monel, 0Cr13, 316L, SAF2205, SAF2507 and SAF 2304, the tower body of the atmospheric tower between the tower bottom and the 40th layer of the tower tray is made of metallic composite of 316 L and
carbon steel, the tower trays from the 28th layer to the 39th layer are made of 0Cr13 material and the tower trays from the first layer to the 28th layer are made of 316L. The atmospheric and
vacuum distillation device effectively solves the problem of device
corrosion in the atmospheric and vacuum
distillation of high acid-content
crude oil.