![]() ![]() Sweet crude requires less processing than sour, hence the favorable price structure. Sweet crudes have 0.5% sulfur content or less and command a higher price than sour crudes, which have sulfur content of 1.5% or more. The opposite is true: fewer carbons means a lighter compound and lower boiling temperatures.Ĭrude oil may also be classified on the basis of sulfur content. As a general rule, the more carbon atoms in a hydrocarbon compound, the denser it is, and will have a higher boiling temperature. ![]() The heavy crudes will have more gas oil and residuum. Light crudes can result in greater amounts of gasoline, kerosene, and naphtha. This is apparent in the different classifications of crude oil. The amount of any particular hydrocarbon molecule can vary widely in a crude oil. ![]() It is composed of hydrocarbons primarily made of carbon chains or rings, with hydrogen as the other primary constituent. Crude OilĬrude oil is a flammable liquid found in nature. Figure 2: Another aerial view, showing the marine terminal and refinery areas in relation to one another. Figure 1: Aerial view of the US Oil and Refining Company refinery. ![]()
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