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Glossary

Deasphalting

Vacuum residue seperation process which produces a very heavy product with a high impurity content, asphalt, and a deasphalted oil (DAO). The solvent used in generally propane, butane or even light gasoline.

 

Desulfurization

To remove sulfur or sulfur compounds from oil or gas.

 

Dewaxing

Process removing wax (normal paraffins) from lube base stocks either with a catalytic system or by separation with a solvent.

 

Dimerization

Process converting olefins into higher-octane gasoline blending components through a chemical reaction joining two molecules to form a single one.

 
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