Sterically-hindered amines for acid-gas absorption
- Exxon Research and Engineering Co. (US)
This paper describes sterically hindered amines for removal of acid gases such as CO/sub 2/ and H/sub 2/S from gaseous streams. Steric hindrance of amines reduces carbamate stability. Moderately hindered amines are characterized by high rates of CO/sub 2/ absorption and high capacities for CO/sub 2/. The moderately hindered amine in use with organic solvent has considerably higher capacity than the conventional amine-solvent system for simultaneous removal of CO/sub 2/ and H/sub 2/S from synthesis gas and natural gas. A severely-hindered-amine absorbent, characterized by a very low rate of CO/sub 2/ absorption, has much higher capacity and selectivity than the current industry standard absorbent, using the conventional methyldiethanolamine for selective removal of H/sub 2/S from CO/sub 2/-containing streams.
- OSTI ID:
- 5495714
- Report Number(s):
- CONF-880348--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
030300* -- Natural Gas-- Drilling
Production
& Processing
ABSORPTION
AMINES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
ENERGY SOURCES
EXTRACTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NATURAL GAS
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OXIDES
OXYGEN COMPOUNDS
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS GAS