초록 ▼

Systems and processes for producing one or more olefins. A feed containing 90% by weight or more C4 and higher hydrocarbons can be cracked at conditions sufficient to provide an olefinic mixture and an aromatic mixture. The olefinic mixture can comprise 90% by weight or more C1 to C3 hydrocarbons. T

Systems and processes for producing one or more olefins. A feed containing 90% by weight or more C4 and higher hydrocarbons can be cracked at conditions sufficient to provide an olefinic mixture and an aromatic mixture. The olefinic mixture can comprise 90% by weight or more C1 to C3 hydrocarbons. The aromatic mixture can comprise 90% by weight or more C4 and higher hydrocarbons and one or more aromatics. The aromatic mixture can be contacted with one or more solvents to selectively separate at least a portion of the one or more aromatics therefrom to provide an aromatic-rich mixture and an aromatic-lean mixture. At least a portion of the aromatic-lean mixture can be recycled to the feed prior to cracking.

대표청구항 ▼

What is claimed is: 1. A process for producing one or more olefins, comprising:cracking a feed comprising 90% by weight or more C4 and higher hydrocarbons at conditions sufficient to provide an olefinic mixture comprising 90% by weight or more C1 to C3 hydrocarbons and an aromatic mixture comprising

What is claimed is: 1. A process for producing one or more olefins, comprising:cracking a feed comprising 90% by weight or more C4 and higher hydrocarbons at conditions sufficient to provide an olefinic mixture comprising 90% by weight or more C1 to C3 hydrocarbons and an aromatic mixture comprising 90% by weight or more C4 and higher hydrocarbons and one or more aromatics;contacting a first portion of the aromatic mixture with one or more solvents to provide an aromatic-rich mixture and an aromatic-lean mixture;recycling at least a portion of the aromatic-lean mixture to the feed prior to cracking; andseparating a second portion of the aromatic mixture to provide a low aromatics mixture and gasoline.