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常减压蒸馏装置是加工原油的头一个工序。而石油是由分子大小和化学结构不同的烃类和非烃类物质组成的复杂混合物。蒸馏是利用混合物中各种物质沸点的不同,按一定沸点范围把原油分离成不同馏分,如重整原料、汽油组分、航空煤油、柴油、裂化原料、润滑油组分及渣油(或沥青原料)等,再送往二次加工装置。
Atmospheric vacuum distillation unit is the first process of processing crude oil. Oil, on the other hand, is a complex mixture of hydrocarbons and non-hydrocarbons with different molecular sizes and chemical structures. Distillation is the use of various substances in the mixture boiling point of the different, according to a certain boiling range of crude oil separation into different fractions, such as reformers, gasoline components, aviation kerosene, diesel, cracking raw materials, lubricating oil components and residue (or asphalt Raw materials), etc., and then sent to secondary processing equipment.