Word.ws English Dictionary

deasphalter bottoms

deasphalter bottoms noun: a mixture of tar and asphalt that is produced as a byproduct of the deasphalting process.

Noun

deasphalter bottoms pl (plural only)

  1. (plural, plural-only) A mixture of tar and asphalt that is produced as a byproduct of the deasphalting process.
    • 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.2014, R Luque, J Speight, Gasification for Synthetic Fuel Production, →ISBN
    • 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).2015, James G. Speight, Fouling in Refineries, →ISBN, page 210

Questions about deasphalter bottoms

What does deasphalter bottoms mean?
Deasphalter bottoms means a mixture of tar and asphalt that is produced as a byproduct of the deasphalting process.
What part of speech is deasphalter bottoms?
Deasphalter bottoms is a noun.

Words near deasphalter bottoms in the dictionary

  1. deasoil
  2. Deason
  3. deasphalt
  4. deasphalted
  5. deasphalter
  6. deasphalter bottoms
  7. deasphalters
  8. deasphalting
  9. deasphaltization
  10. deasphalts
  11. deaspirate

Source and license

Adapted from Wiktionary: deasphalter bottoms (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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