Acid gas removal process
AssigneeBritish Gas Corporation
InventorsChi W. Lam, Terence J. Ritter, Peter Small
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for the removal of acid gases from gaseous mixtures wherein said mixture is contacted with an aqueous alkaline solution comprising a compound of an alkali metal or ammonia and an alkanolamine-based promoter characterized in that the promoter is a mixture of at least one secondary alkanolamine and at least one N-alkyl-2-aminoethanol, said alkyl radical containing up to 3 carbon atoms.
Claims7
A process for the removal of carbon dioxides from gaseous mixtures wherein said mixture is contacted with an aqueous alkaline solution comprising a compound of an alkali metal or ammonia and an alkanolamine-based promoter characterised in that the promoter is a mixture of at least one secondary alkanolamine and at least one N-alkyl-2-aminoethanol, said alkyl radical containing up to 3 carbon atoms.
A process as claimed in claim 4 wherein the concentration of diethyl-2,2' dihydroxy amine is not more than 7% w/w.
Dependencies are inferred from the claim text.