petroleum refining is petroleum refining
It separates crude oil into fractions consisting of compounds with similar properties
The majority of processes involved in petroleum refining are chemical changes.
Matthew P. Brouwer has written: 'Oil refining and the petroleum industry' -- subject(s): Petroleum, Petroleum industry and trade, Refining, Petroleum refineries
gasoline
This is a chemical engineering process - the refining of petroleum.
well there is 32,433 different types of petroleum
base
NaOH
Butane is a bi-product of petroleum which is formed after refining petroleum, it is also known as petroleum gas.
fractional distillation
Stephen K. Patterson has written: 'The U.S. petroleum refining industry in the 1980's' -- subject(s): Petroleum, Refining
Getting It out of the ground Drilling for it