My answers--part2

• The process of breaking of heavier compounds into smaller compounds is called cracking.
• Hence the crude petroleum consists of higher and lower weight compounds.
• These compounds are separated at various stages in a fractional distillation column.
• At first the separation process is made to happen.
• In the lower components separating stage, the components are separated by means of a fractionating column.
• The lower gasoline products like butane, pentane, n-hexane are separated out.
• The higher value /weight components are subjected to a process known as catalytic cracking.
• In this catalytic cracking, the components are separated by means of their difference in the boiling point.
• After the catalytic cracking is over, it is subjected to a distillation process in a distillation column.
• After the distillation process is over, unit processing occurs in which gases like sulphur are removed out.
• The removal of sulphur is a very important process.
• The catalyzed compounds are subjected to catalytic refining.
• The high commercial value gases are also processed at this time.
• After this, the liquid fuel extraction occurs and the higher molecular substances are also separated out.