Unit 2- Fuels: Fractional Distillation Flashcards
What is fractional distillation?
The process used to separate crude oil into fractions according to the boiling points of the components of the fractions
What is crude oil?
A mixture of chemical compounds, mainly hydrocarbons
What is a fraction?
A group of hydrocarbons with boiling points within a given range
What 4 properties are related to the molecular sizes of the molecules with in the fraction?
Ease of evaporation
Viscosity
Flammability
Boiling point range
Name 3 properties of gas
Very easy evaporation
Very flammable
Very low viscosity
Name 3 properties of gasoline
Very volatile liquid
Flammable
Low viscosity
Name 3 properties of naphtha
Fairly volatile liquid
Quite flammable
Quite low viscosity
Name 3 properties of kerosine
Slightly volatile liquid
Slightly flammable
Quite high viscosity
Name 3 properties of gas oil (diesel)
Non volatile
Not vey flammable
High viscosity
Name 3 properties of residue
Thick, sticky and close to solid
Difficult to ignite
Very high viscosity
