Crude oil content composition
Crude Oil Crude oil is a natural multicomponent mixture. Its major part is composed of hydrocarbons (alkanes, naphthenes, and aromatics). Their content in oils ranges between 30% and 100%. Most important among the non-hydrocarbon components are resins and asphaltenes. Heavy metals are often toxic and their removal from crude presents disposal issues. The sulfur content of heavy oil may be as high as 4.5%. Sulfur contributes to acid rain and in combination with hydrogen, produces hydrogen sulfide, which can be deadly. Sulfur is corrosive to pipeline metal and refinery components. Crude oil contains organic compounds, heteroatom compounds (S,N,O), hydrocarbons (C, H), metals and organic (Ni, V, Fe) and inorganic (Na +, Ca ++, Cl -) compounds as listed in Figure 1.7. Compounds that contain only elements of carbon and hydrogen are called hydrocarbons and constitute the largest group