crude oil Flashcards
(12 cards)
what is crude oil separated into
hydrocarbon fractions
what are hydrocarbons
molecules made of only hydrogen and carbon
how are the different compounds in crude oil separated
by fractional distillation
how does a fractionating column work
the crude oil is heated until most of it is gas (bottles gas)
the liquid, bitumen, is drained off
what is the temperature in a fractionating column
hotter at the bottom (340 degrees) and it gets progressively cooler towards the top (40 degrees)
in a fractionating column, when does each substance condense
when the substances reach a part of the column where the temperature is lower than their boiling point they condense
do long hydrocarbons have low or high boiling points
high boiling points
where in the fractionating column to longer hydrocarbons condense
they condensed and drain out of the column earlier on, near the bottom
where in the fractionating column to shorter hydrocarbons condense
they condensed and drain out of the column later on, near the top
what do bubble caps do in the fractionating column
stop separated liquids from remixing
what type of bonds do saturated hydrocarbons have
single bonds
what type of bonds do unsaturated hydrocarbons have
double or triple bonds
