Asphaltenes

Asphaltenes are large, high density hydrocarbons found in the heaviest distillation fractions of crude oil.

Asphaltenes are the primary components of the product asphalt.

High asphaltene content is desirable for a refiner producing asphalt, but undesirable if the asphaltene containing resid is intended for fuel oil blending or feed to conversion units.

Asphaltenes include a large number of different hydrocarbon molecules. The primary definition of an asphaltene is that it is insoluble in n-heptane but soluble in toluene.

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