Meaning of deasphalter bottoms | Babel Free

Definitions

A mixture of tar and asphalt that is produced as a byproduct of the deasphalting process.

plural, plural-only

Examples

“The deasphalter unit is usually placed after the vacuum distillation tower, where, by the use of a low-boiling liquid hydrocarbon solvent, such as propane or butane under pressure, the insoluble asphalt-like product (deasphalter bottoms) is .separated from the feedstock.”

“Propane (or sometimes propane/butane mixtures) is extensively used for deasphalting and produces a deasphalted oil (DAO) and deasphalter bottoms (propane deasphalter asphalt, PDA, PD tar) (Dunning and Moore, 1957).”

CEFR level