Process for producing alkylated aromatic hydrocarbons from a mixed hydrocarbon feedstream

US10065904B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Kae Shin Wong · Geleen, NL
• Andrew Mark Ward · Cross, GB

Key dates

• Filing date: Aug 27, 2015
• Grant date: Sep 4, 2018
• Expiry date: Aug 27, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing alkylated aromatic hydrocarbons comprising the steps of: (a) subjecting a mixed hydrocarbon feedstream comprising benzene to a separation to provide a C6 cut comprising benzene, wherein the C6 cut comprises at least 60 wt-% of C6 hydrocarbons; (b) subjecting the C6 cut to catalytic cracking or thermal cracking to provide a cracking product stream comprising benzene and C2-C4 alkenes and (c) after step (b), without pre-separation of the cracking product stream, subjecting the cracking product stream to conditions suitable for alkylation to provide an alkylation product stream rich in alkylated aromatic hydrocarbons, wherein the process further comprises the steps of separating benzene and benzene coboilers from the alkylation product stream to obtain a stream of benzene and benzene coboilers and wherein the stream of benzene and benzene coboilers is separated into a benzene-rich stream comprising a higher proportion of benzene than the stream of benzene and benzene coboilers and a benzene-lean stream comprising a lower proportion of benzene than the stream of benzene and benzene coboilers and wherein the benzene-lean stream is recycle…