公开(公告)号：US20230365877A1

公开(公告)日：2023-11-16

申请号：US18246997

申请日：2021-10-12

Applicant: SHELL OIL COMPANY

Inventor： Jean-Paul Andre Marie Joseph Ghislain LANGE ,  Kai Jürgen FISCHER ,  Guus VAN ROSSUM ,  Timothé Johannes OLTHOF ,  Sybe SIPMA ,  Luis Alberto GRAU LISNIER ,  Hendrik STICHTER

IPC: C10G67/04

CPC classification number: C10G67/049 ,  C10G2300/4081 ,  C10G2300/44 ,  C10G2300/202 ,  C10G2300/1037

Abstract: The invention relates to a process for the recovery of aliphatic hydrocarbons from a liquid stream comprising aliphatic hydrocarbons, heteroatom containing organic compounds and optionally aromatic hydrocarbons, involving (i) contacting said liquid stream with a washing solvent thereby removing heteroatom containing organic compounds; a) liquid-liquid extraction of the washed stream with an extraction solvent; b) mixing the extract stream, comprising extraction solvent, heteroatom containing organic com-pounds and optionally aromatic hydrocarbons, with a demixing solvent to remove additional heteroatom containing organic compounds and optional aromatic hydrocarbons; and c) separation of the remaining stream into a demixing solvent stream and an extraction vent stream. Further, the invention relates to a process for the recovery of aliphatic hydrocarbons from plastics comprising the above-mentioned process; and to a process for steam cracking a hydrocarbon feed comprising aliphatic hydrocarbons as recovered in one of the above-mentioned processes.

公开(公告)号：US20230374400A1

公开(公告)日：2023-11-23

申请号：US18247103

申请日：2021-10-12

Applicant: SHELL OIL COMPANY

Inventor： Jean-Paul Andre Marie Joseph Ghislain LANGE ,  Kai Jürgen FISCHER ,  Guus VAN ROSSUM ,  Timothé Johannes OLTHOF ,  Sybe SIPMA ,  Luis Alberto GRAU LISNIER ,  Hendrik STICHTER

IPC: C10G67/04

CPC classification number: C10G67/0445 ,  C10G2300/202 ,  C10G2300/4081

Abstract: The invention relates to a process for the recovery of aliphatic hydrocarbons from a liquid stream comprising aliphatic hydrocarbons, heteroatom containing organic compounds and optionally aromatic hydrocarbons, involving (i) contacting said liquid stream with a washing solvent thereby removing heteroatom containing organic compounds; a) liquid-liquid extraction of the washed stream with an extraction solvent thereby recovering part of the aliphatic hydrocarbons; b1) mixing the extract stream, comprising extraction solvent, aliphatic hydrocarbons, heteroatom containing organic compounds and optionally aromatic hydrocarbons, with a demixing solvent to recover additional aliphatic hydrocarbons; b2) mixing the remaining stream with additional demixing solvent to remove heteroatom containing organic compounds and optional aromatic hydrocarbons; and c) separation of the remaining stream into a demixing solvent stream and an extraction solvent stream. Further, the invention relates to a process for the recovery of aliphatic hydrocarbons from plastics comprising the above-mentioned process; and to a process for steam cracking a hydrocarbon feed comprising aliphatic hydrocarbons as recovered in one of the above-mentioned processes.