Conversion of waste plastic to propylene and cumene

US10851309B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Krishna Kumar Ramamurthy · Bengaluru, IN
• Ravichander Narayanaswamy · Kanchinakote, IN
• Venkata Ramanarayanan Ganapathy Bhotla · Bengaluru, IN
• Alexander Stanislaus · Kanchinakote, IN
• Santosh Ganji · Bengaluru, IN

Key dates

• Filing date: Jan 3, 2018
• Grant date: Dec 1, 2020
• Expiry date: Jan 25, 2038

Classification

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

Abstract

A process for producing propylene and cumene comprising converting plastics to hydrocarbon liquid and pyrolysis gas in pyrolyzer; feeding hydrocarbon liquid to hydroprocessor to yield hydrocarbon product and first gas stream; introducing hydrocarbon product to second separator to produce first C6 aromatics and refined product; feeding refined product to steam cracker to produce steam cracker product; introducing steam cracker product to third separator to produce second C6 aromatics, third propylene stream, second C2&C4 unsaturated stream, C1-4 saturated gas, and balance hydrocarbons product; introducing pyrolysis gas and/or first gas stream to first separator to produce first propylene stream, first C2&C4 unsaturated stream, and saturated gas stream; feeding first and/or second C2&C4 unsaturated stream to metathesis reactor to produce second propylene stream; feeding first and/or second C6 aromatics, and first, second, and/or third propylene stream to alkylation unit to produce cumene; and conveying balance hydrocarbons product to pyrolyzer and/or hydroprocessor.