C4 hydrocarbon mixture (unsaturated hydrocarbons production - steam cracking operation - average)

The activity generating the emissions is unsaturated hydrocarbons production, steam cracking operation, average. The Reference Product is C4 hydrocarbon mixture. The C4 hydrocarbon mixture from steam cracking is a gaseous blend of C4 hydrocarbons, with its composition varying based on cracking severity. To isolate pure butadiene from this mixture, which cannot be separated by simple distillation due to azeotrope formation with butane, liquid-liquid extraction or extractive distillation methods are employed. The Reference Product amount is 1. The cut-off classification is allocatable product. The activity type is ordinary transforming activity. Please refer to the ecoinvent documentation for full details: https://ecoquery.ecoinvent.org/3.12/cutoff/dataset/275515/documentation