Selective removal of hydrogen sulphide by MDEA solutions

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:7005459

Alper, E; Al-Ramadhan, A

When compared with primary or secondary amines, tertiary amines possess both ''thermodynamic'' and ''kinetic'' selectivity for removal of H/sub 2/S from mixtures of hydrogen sulphide and carbondioxide. One of these amines, methyl-diethanolamine, is used industrially as an aqueous solution, but the selectivity achieved may be less than that can be calculated by simply taking into account the alkalinity of the solution. Gas absorption experiments in the stirred cell confirmed that CO/sub 2/ reacts in aqueous MDEA solutions where the rate is proportional to the amine concentration. On the other hand, no reaction took place when a nonaqueous solution of MDEA in n-propanol was used. These results confirmed therefore that MDEA acted as a homogeneous catalyst for CO/sub 2/ hydrolysis.

• OSTI ID: 7005459
• Report Number(s): CONF-870822-
• Resource Relation: Conference: American Institute of Chemical Engineers summer national meeting, Minneapolis, MN, USA, 16 Aug 1987; Other Information: Technical Paper 12F
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
CARBON DIOXIDE
ALKALINE HYDROLYSIS
CHEMICAL REACTIONS
GASES
ABSORPTION
HYDROGEN SULFIDES
REMOVAL
METHYLAMINE
AQUEOUS SOLUTIONS
THERMODYNAMICS
CATALYSTS
EXPERIMENTAL DATA
AMINES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DATA
DECOMPOSITION
DISPERSIONS
FLUIDS
HYDROGEN COMPOUNDS
HYDROLYSIS
INFORMATION
LYSIS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SOLUTIONS
SOLVOLYSIS
SULFIDES
SULFUR COMPOUNDS
400105* - Separation Procedures
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
400201 - Chemical & Physicochemical Properties
424000 - Engineering- Pollution Control Equipment- (1980-1989)