Removal of acid gases from a fluid flow by means of reduced coabsorption of hydrocarbons and oxygen

US9498748B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Rupert Wagner · Worms, DE
• Ute Lichtfers · Karlsruhe, DE
• Norbert Asprion · Ludwigshafen, DE

Key dates

• Filing date: Mar 1, 2013
• Grant date: Nov 22, 2016
• Expiry date: Mar 1, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C7/11
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for removing acid gases from a hydrocarbonaceous fluid stream or an oxygen-comprising fluid stream in which the fluid stream is contacted with an aqueous solution which is essentially free from inorganic basic salts and comprises (i) at least one amine and (ii) at least one metal salt of an aminocarboxylic acid and/or an aminosulfonic acid. Conjoint use of the aminocarboxylic and/or aminosulfonic salt reduces the coabsorption of hydrocarbons or oxygen without significantly impairing the absorption rate at which acid gases are absorbed, without significantly reducing the absorption capacity of the solution for acid gases, and without significantly increasing the energy demand required for regeneration.