AMINE TREATING PROCESS FOR ACID GAS SEPARATION USING BLENDS OF AMINES AND ALKYLOXYAMINES

A process for absorbing H2S and CO2 from a gas mixture containing both these gases comprises contacting the gas mixture with an absorbent combination of (i) primary absorbent component comprising a severely sterically hindered tertiary etheramine triethylene glycol alcohol or derivative of such an a...

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Bibliographische Detailangaben
Hauptverfasser:	DAAGE MICHEL, FEDICH ROBERT BASIL, SISKIN MICHAEL
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG] CHEMISTRY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	A process for absorbing H2S and CO2 from a gas mixture containing both these gases comprises contacting the gas mixture with an absorbent combination of (i) primary absorbent component comprising a severely sterically hindered tertiary etheramine triethylene glycol alcohol or derivative of such an alcohol and (ii) secondary absorbent component for acidic gases comprising a liquid amine such as methyldiethylamine (MDEA), monoethanolamine (MEA), 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), diethanolamine (DEA), triethanolamine (TEA), diglycolamine (aminoethoxyethanol, DGA) and diisopropylamine (DIPA) another etheramine alcohol or diamine. By using the combination of amine absorbents, the overall selectivity of CO2 pickup can be maintained while retaining good H2S sorption selectivity; the selectivity of the combination for H2S and CO2 may be controlled over a range of gas loadings in the absorbent.