OES 5016 Test 1 Refinery Process Part 1
Exam Questions And Answers 2025
_____ __________ of petroleum fractions is a measure of density of the
stream - API gravity
_______ ______ crude oil is the most sought after version of crude oil -
light sweet
, Terms in this set (100) Q&A
__________ API gravity value is desired - lighter
___________ refer to alkanes such as methane, ethane, propane, and
isobutane. These compounds are primarily obtained as a gas fraction from
crude distillation unit - paraffins
- Contribute towards higher octane number products and the target is to
maximize their quantity in a refinery process. examples;
o Benzene
o Toluene
o Para-xylene
o Meta-xylene - aromatics
- Polynuclear aromatic structures consisiting of 20 or more aromatic rings
along with paraffinic and napthenic chains - asphaltenes
- Polynuclear aromatic structures supported with side chains of paraffins
and small ring aromatics.
- Molecular weight usually 500-1500
- These compounds also contain sulfur, nitrogen, oxygen and nickel -
resins
- Polynuclear aromatics such as ___________ consist of two or three or
more aromatic rings. Their molecular weight is usually 150-300 -
napthalenes
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