Premix for producing an absorption agent for removing acid gases from a fluid flow

US11045759B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Ingram · Keller, US
• Gerald Vorberg · Ludwigshafen, DE
• Georg Sieder · Bad Dürkheim, DE

Key dates

• Filing date: Apr 6, 2017
• Grant date: Jun 29, 2021
• Expiry date: May 29, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A premixture for producing an absorbent for removing acid gases from a fluid stream containing a) at least a tertiary amine and/or a sterically hindered secondary amine; b) a dicarboxylic acid in an amount, calculated as neutralization equivalent based on the protonatable nitrogen atoms in a), of at least 30%, wherein the dicarboxylic acid has a solubility in water at a temperature of 20° C. of not more than 15 g of dicarboxylic acid per 100 g of water; and c) 20 to 80 wt % of water. Also described is a process for producing an absorbent from the premixture. The premixture is a transportable and readily handleable solution of a dicarboxylic acid having poor solubility in water for producing an absorbent for removing acid gases from a fluid stream.