Process for starting up and shutting down a plant for removing isobutene from a C4-hydrocarbon mixture

US12331017B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Hans-Guenter Wagner · Havelsee, DE
• Suman Thotla · Mannheim, DE
• Gerrit Waters · Karlsruhe, DE
• Michael Huebner · Houston, US
• Markus Neudert · Ludwigshafen am Rhein, DE
• Randolph Hugo · Ludwigshafen am Rhein, DE
• Thomas Roussiere · Mannheim, DE

Key dates

• Filing date: Mar 1, 2022
• Grant date: Jun 17, 2025
• Expiry date: Jun 21, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for starting up a plant for removing isobutene from an isobutene-containing C4-hydrocarbon mixture, the plant comprising an etherification unit containing moist acidic ion exchange resin, a first distillation unit, an ether cleavage unit, and a second distillation unit. The invention further relates to a process for shutting down the plant from a stationary operation mode.