B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/14 (2006.01) B01D 53/52 (2006.01) B01D 53/62 (2006.01)
Patent
CA 2750458
An absorbent for removing acidic gases from a fluid stream, comprising an aqueous solution a) of at least one metal salt of an amino carboxylic acid and b) of at least one acidic promoter, where the molar ratio of b) to a) is in the range from 0.0005 to 1Ø The acidic promoter is selected from mineral acids, carboxylic acids, sulfonic acids, organic phosphonic acids and partial esters thereof. The absorbent exhibits, compared to absorbents based on amino acid salts, a reduced requirement for regeneration energy, without significantly reducing the absorption capacity of the solution for acidic gases. In a process for removing acidic gases from a fluid stream, the fluid stream is contacted with the absorbent.
L'invention concerne un agent d'absorption pour l'élimination de gaz acides d'un courant fluide, comprenant une solution aqueuse de a) au moins un sel métallique d'un acide aminocarboxylique et b) au moins un promoteur acide, le rapport molaire entre b) et a) étant dans la plage allant de 0,0005 à 1,0. Le promoteur acide est choisi parmi les acides minéraux, les acides carboxyliques, les acides sulfoniques, les acides phosphoniques organiques et leurs esters partiels. L'agent d'absorption présente un besoin en énergie de régénération réduit en comparaison des agents d'absorption à base de sels d'acides aminés, sans que la capacité d'absorption de la solution pour les gaz acides soit significativement réduite. Selon un procédé d'élimination de gaz acides d'un courant fluide, le courant fluide est mis en contact avec l'agent d'absorption.
Dengler Erika
Katz Torsten
Lichfers Ute
Riemann Christian
Sieder Georg
Basf Se
Robic
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