重油常減壓蒸餾裝置是為分離原油重油而開發研制的一種蒸餾裝置，能夠將25度至550度沸點范圍的餾份按要求進行切割，裝置分為常壓蒸餾塔、減壓蒸餾塔，蒸餾塔頭上切割的飽和蒸汽溫度最高為400度，系統真空度可達1.0pa.
Heavy oil atmospheric and vacuum distillation unit;
    　The heavy oil atomospheric and vacuum distillation unit ys a distillation unit developed to separate the heavy oil from crude oil ,can cut fraction ys the range of boiling point of 25.cand 550.c according to the requirement ,incuds atmospheric tower ,vacuum tower ,the maximum temperature of saturated steam of the top is 400度 ,the vacuum degree of the system can be up to 1.0pa.