is the feedstock for the vacuum fractionator Refinery gas o

_________________ is the feedstock for the vacuum fractionator.

Solution

Crude oil first enters atmospheric crude fractioner where the crude oil is washed and heated

After that it is followed by vacuum fractionator where it enters as Atmospheric topped crude

wher it is further being separates asheavy and higher boiling points component under a vacuum to prevent thermal cracking

naphtha is the end producr

So, Atmospheric Topped Cude is the feedstock (Raw material) for the vacuum fractionator.