DEA degradation mechanism
Examines factors that increase diethanolamine (DEA) degradation, which reportedly depends on temperature, pressure, gas composition, amine concentration, pH of the amine solution and the presence of metal ions. Plant operators have tried to solve the problem by changing operating conditions and/or installing activated carbon filters. DEA degradation is frequently experienced in gas plants used for removing acidic gases such as carbon dioxide and hydrogen sulfide from light hydrocarbons. Experimental results reveal that degradation is governed by: solubility of CO/sub 2/ in the DEA solution; degree of dissociation of the DEA molecules in solution; interaction of DEA and CO/sub 2/ molecules and/or ionic complexes. Most, or all, these phenomena are affected by temperature, pressure, DEA concentration and pH. A series of tests to determine whether activated carbon is capable of removing impurities from partially degraded DEA solutions showed that this treatment did not remove any major degradation compounds from the solutions.
- Research Organization:
- The University of British Columbia, Vancover, BC
- OSTI ID:
- 6110446
- Journal Information:
- Hydrocarbon Process.; (United States), Vol. 61:10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMINES
DECOMPOSITION
ACTIVATED CARBON
CARBON DIOXIDE
DISSOCIATION
FILTERS
GAS CHROMATOGRAPHY
HYDROCARBONS
HYDROGEN SULFIDES
ION EXCHANGE
NATURAL GAS
PARAMETRIC ANALYSIS
PH VALUE
PRESSURE DEPENDENCE
QUANTITY RATIO
SOLUBILITY
TEMPERATURE EFFECTS
ADSORBENTS
CARBON
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
030300* - Natural Gas- Drilling
Production
& Processing
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)