Blending

The cuts obtained as a result of this sequence of processes are not themselves the finished products. To obtain finished products ready for market, the refiner must carefully blend the various cuts obtained earlier. For example, to produce unleaded gasoline, the refiner blends suitable proportions of butane, gasoline obtained from direct distillation, alkylate or isomerate, gasoline from the catalytic cracker, reformate, and, possibly, ETBE or MTBE.