Simultaneous removal of water and hydrogen sulfide from gases

US4302220A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Volkamer · Bischofswerda, DE
• Ulrich Wagner · Bernburg, DE
• Eckhart Wagner · Ludwigshafen, DE

Key dates

• Filing date: May 30, 1980
• Grant date: Nov 24, 1981
• Expiry date: May 30, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D53/1468
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for simultaneously removing water and hydrogen sulfide from gases containing both of these by treating the gases, in an absorption zone under superatmospheric pressure, with polyethylene glycol dialkyl ethers as a solvent, stripping the hydrogen sulfide from the loaded solvent, obtained from the absorption zone, in a desorption zone, removing the water, taken up in the absorption zone, from the solvent and recycling the regenerated solvent to the absorption zone, wherein the solvent additionally contains from 0.01 to 20% by weight, based on the solvent mixture, of an alcohol or ether boiling in the range from 50.degree. to 140.degree. C.