Methods and systems for forming recovery component hydrocarbon compositions

Methods and systems for producing recovered component hydrocarbons, including olefins, from recovered waste materials. The recovered waste material may be pyrolyzed to form a recovered component pyrolysis oil composition (r-pyrolysis oil), at least a portion of which may then be cracked to form a recovered component olefin composition (r-olefin). The r-olefins may then be further separated into a product stream in a separation zone downstream of the cracking furnace. In some cases, the presence of the recovered component hydrocarbon may facilitate more efficient operation of one or more distillation columns, including debutanizer columns, in the separation zone. 用于从回收废物材料制备回收成分烃的方法和系统，所述烃包括烯烃。可将回收废物材料热解以形成回收成分热解油组合物(r-热解油)，其至少一部分可随后被裂化以形成回收成分烯烃组合物(r-烯烃)。然后，r-烯烃可以在裂化炉下游的分离区中进一步分离成产物流。在一些情况下，回收成分烃的存在可促进分离区中的一个或多个蒸馏塔(包括脱丁烷塔)的更高效操作。