Preparation of an amine based solvent contaminated by the introduction of sulfur oxides

US9527037B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Rainald Forbert · Flörsheim, DE
• Stefan Hauke · Lorsch, DE
• Ralph Joh · Seligenstadt, DE
• Frank Olschewski · Bad Soden am Taunus, DE
• Rüdiger Schneider · Eppstein, DE

Key dates

• Filing date: Nov 8, 2011
• Grant date: Dec 27, 2016
• Expiry date: Sep 9, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/151
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for processing an amine-based solvent contaminated by the introduction of sulfur oxides is provided. A potassium compound is introduced into a contaminated solvent, and the contaminated solvent is cooled so that a solubility of a potassium sulfate becomes less than a specified concentration of potassium sulfate. Further, an oxidizing agent is introduced into the contaminated solvent so that a potassium sulfite is oxidized to potassium sulfate. The potassium sulfate is filtered out, wherein a prepared solvent is formed. Further, a device for processing an amine-based, sulfur oxide-contaminated solvent is provided.