What are refinery gases and their applications?
The hydrocarbon gases produced in oil refining processes are called refinery gas which are primarily from the secondary processes such as fluid catalytic cracking, thermal cracking, delayed coking, catalytic reforming, and hydrocracking and so on. Its compositions include hydrogen, C1 to C4 paraffins, C2 to C4 olefins, a small amount of C5 olefins and impurities such as hydrogen sulfide and carbon dioxide. Most of the refinery gases are from the FCC unit because its processing capacity is the largest of all these processes. The refinery gases are valuable feedstocks for petrochemical production. Many varieties of petrochemicals can be made from the refinery gases. The gases have found a wide application. In China the refinery gas can be used in the following fields: For production of high octane gasoline blending components Production of high octane gasoline blending components is the most important application of the refinery gases. Most commonly, isobutylene is used to produce alkyla
