Crude C4 is a hydrocarbon fraction derived from the processing of crude oil or natural gas, consisting mainly of four-carbon compounds such as butanes, butylenes, and other C4+ hydrocarbons. This mixed stream serves as an important intermediate in the petrochemical industry and requires further separation and purification to isolate its individual components.
Butanes extracted from Crude C4 are commonly used as fuel gases, in gasoline blending, and as feedstock for various petrochemical processes. Butylenes, on the other hand, are vital in the production of synthetic rubber, plastics, and a wide range of chemical derivatives. The exact composition and downstream use of Crude C4 depend on refining methods and evolving market demands, making it a flexible and economically significant feedstock in modern refining and petrochemical operations.