Basf Se Corporation

Basf Aktiengesellschaft

Iven Clausen

Norbert Asprion

Ute Lichtfers

Johann-Peter Melder

Bernd Eck

Hans Hasse

Frank Hoefer

Rupert Wagner

Ole Brettschneider

Joachim-Thierry Anders

A description is given of an absorption medium for removing carbon dioxide from gas streams which comprises aqueous solution of an amine of the formula IHNR&#x2003;&#x2003;(I)where one or both radicals R are and the other radical R is hydrogen. The absorption medium is distinguished by particular oxidation resistance.

Absorption medium and method for removing carbon dioxide from gas streams

A description is given of an absorption medium for removing carbon dioxide from a gas stream, which comprises an aqueous solution of at least one amine and at least one aminocarboxylic acid and/or aminosulfonic acid. The concomitant use of an aminocarboxylic acid or aminosulfonic acid reduces the energy required for regeneration of the absorption medium.

Carbon dioxide absorbent requiring less regeneration energy

A description is given of a process for removing carbon dioxide from gas streams in which the partial pressure of the carbon dioxide is less than 200 mbar, in particular flue gases, the gas stream being contacted with a liquid absorption medium which comprises an aqueous solution (A) of a tertiary aliphatic alkanolamine and (B) an activator of the formulaR&#x2014;NH&#x2014;R&#x2014;NH,where Ris C-C-alkyl and Ris C-C-alkylene, the sum of the concentrations of A and B being 2.5 to 7 mol/l, and the molar ratio of B to A being in the range of 1:3 to 1.5:1. The activator is, for example, 3-methylaminopropylamine, the tertiary aliphatic amine methyldiethanolamine, methyldiisopropanolamine or n-butyldiethanolamine. The process permits substantial removal of carbon dioxide and the regeneration of the absorption medium is possible with relatively low energy consumption.

Removal of carbon dioxide from flue gases

An absorption medium for deacidifying fluid streams which has improved oxidation stability includes at least one aliphatic amine, and at least one non-hydroquinoid antioxidant. The absorption medium may be employed in deacidifying a fluid stream, in particular an oxygen-containing fluid stream, when the fluid stream is brought into intimate contact with the absorption medium in at least one absorption step.

Absorption medium and deacidification of fluid streams

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Mannheim, Germany

Iven Clausen