Extractive distillation column system and the use thereof in the separation of butenes from C4-hydrocarbon streams

US11629109B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Philip Lutze · Dinslaken, DE
• Stephan Peitz · Johannesweg, DE
• Armin Matthias Rix · Marl, DE
• Tanita Valèrie Six · Dortmund, DE
• Moritz Schröder · Kohlenbissen, DE
• Niklas Paul · Marl, DE

Key dates

• Filing date: Jun 22, 2022
• Grant date: Apr 18, 2023
• Expiry date: Jun 22, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D3/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An extractive distillation column system contains a combination column and a side rectification column. A process can be used for separation of butenes from C4-hydrocarbon streams using the extractive distillation column system.