Compositions – Chemically interactive reactants
Patent
1992-01-07
1993-09-21
Straub, Gary P.
Compositions
Chemically interactive reactants
423228, 423229, 4232427, 252190, 564511, C09K 300
Patent
active
052466191
ABSTRACT:
The invention relates to an alkanolamine composition for the removal of acid gas impurities comprising CO2, H2S, COS, or mixtures thereof, from a gaseous or liquefied gas stream containing said acid gases, and to a process of using the alkanolamine composition. The process involves contacting the gas stream with the alkanolamine composition, or an aqueous solution thereof, comprising a mixture of methyldiethanolamine (MDEA) and methylmonoethanolamine (MMEA) in an amount sufficient to generate in situ at least 5% by weight of N,N'-bis(dimethyl)-N-hydroxyethyl-ethylenediamine (DMHEED), in a contact zone, regenerating said amine composition in a regeneration zone, and recycling said regenerated amine composition to said contact zone. The invention also resides in an aqueous solution comprising from about 20% to about 70% by weight of DMHEED. The invention further resides in the addition of DMHEED in an amount of from about 5% to about 30% by weight to compositions or solutions containing other alkanolamines. The invention further includes a method for producing DMHEED.
REFERENCES:
patent: 3622267 (1971-11-01), Bartholome et al.
patent: 4336233 (1982-06-01), Appl et al.
patent: 5108723 (1992-04-01), Chang et al.
Straub Gary P.
The Dow Chemical Company
Vandy Timothy C.
LandOfFree
Solvent composition for removing acid gases does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solvent composition for removing acid gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solvent composition for removing acid gases will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1047550