What methods are mainly used in the primary processing of petroleum refining, and what kinds of fuel oil are mainly included?

Primary processing includes atmospheric distillation and vacuum distillation to obtain naphtha, kerosene, light diesel oil and heavy diesel oil. Primary processing is the process of separating crude oil into light and heavy fractions by distillation, which is usually called crude oil distillation, including crude oil pretreatment, atmospheric distillation and vacuum distillation. Primary processed products can be roughly divided into:

(1) Light distillate oil (see "light oil") refers to distillate oil with boiling point below 370℃, such as crude gasoline, crude kerosene and crude diesel oil;

(2) Heavy distillate oil (see "heavy oil") refers to the boiling point of 370? Heavy distillate oil at about 540℃, such as heavy diesel oil, various lubricating oil fractions, cracking raw materials, etc.

(3) Flooded oil (also known as residual oil). Traditionally, the bottom oil obtained by atmospheric distillation of crude oil is called heavy oil (also known as atmospheric residue, semi-residue, topping oil, etc.). ).

Extended information The remaining products after separating gasoline, kerosene and diesel oil from crude oil are widely used in industrial fuels such as ship boilers, heating furnaces and metallurgical furnaces.

In recent years, due to the development of heavy oil deep processing technologies such as heavy oil catalytic cracking and residue hydrogenation, it is possible to deeply process fuel oil and improve the yield of light oil. After deep processing, fuel oil can produce naphtha, polypropylene, liquefied petroleum gas, diesel oil, petroleum coke and sulfur, and the market prospect is very good.

Baidu encyclopedia-petroleum refining method