Method and plant for producing ethylene and/or other olefins by steam cracking

US12398082B2 · kind B2 · utility

Assignees

• Linde GmbH · DE
• BASF SE

Inventors

• Benedikt Keller · Munich, DE
• Peter Brehm · Unterschleißheim, DE
• Clemens Prunner · Neufarn, DE
• Hendrik REYNEKE · Hersbruck, DE
• Martin Kamann · Oberhaching, DE
• Gunter Garbe · Rodenbach, DE
• Daniel Keck · Cincinnati, US
• Carl Schietekat · Sint-Niklaas, BE
• Axel Sperber · Ludwigshafen, DE
• Alexander Weck · Freinsheim, DE

Key dates

• Filing date: Feb 15, 2022
• Grant date: Aug 26, 2025
• Expiry date: May 25, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C4/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for producing ethylene and/or other olefins by steam cracking includes charging one or more crackers with a paraffin-containing feed and withdrawing a crude gas from the one or more crackers. The crude gas is subjected at least in part to a treatment comprising a crude gas compression and a thermal separation using a C2 refrigerant and a C3 refrigerant. A crude gas compressor is used for the crude gas compression, wherein the ethylene refrigerant is compressed using a C2 refrigerant compressor. The propylene refrigerant is compressed using a C3 refrigerant compressor. The crude gas compressor comprises two serial compressor trains. The compressor trains, the C2 refrigerant compressor and the C3 refrigerant compressor are each operated at least in part using electrical drives, which have at least partially identical power features, are provided as variable-speed drives of the same construction, and are each fed via frequency converters.