Selective removal of hydrogen sulphide by MDEA solutions

Conference · Thu Jan 01 04:00:00 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-
• Country of Publication: United States
• Language: English

Related Subjects

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