Category Archives for Chemical Solvents

Proprietary Carbonate Systems

Several proprietary processes have been developed based on the hot carbonate system with an activator or catalyst. These activators increase the performance of the hot PC system by increasing the reaction rates both in the absorber and the stripper. In … Continue reading

18. September 2009 by Jack
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Hot Potassium Carbonate Process

The hot potassium carbonate (K2CO3) process uses hot potassium carbonate to remove both CO2 and H2S. It works best on a gas with CO2 partial pressures in the range of 30-90 psi. The main reactions involved in this process are: … Continue reading

18. September 2009 by Jack
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Diisopropanolamine Systems

Diisopropanolamine (DIPA) is a secondary amine used in the Shell ADIP® process to sweeten natural gas. DIPA systems are similar to MEA systems but offer the following advantages: carbonyl sulfide (COS) can be removed and regenerated easily and the system … Continue reading

18. September 2009 by Jack
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Diglycolamine Systems

The Fluor Econamine® process uses diglycolamine (DGA) to sweeten natural gas. The active DGA reagent is 2-(2-amino-ethoxy) ethanol, which is a primary amine. The reactions of DGA with acid gases are the same as for MEA. Degradation products from reactions … Continue reading

18. September 2009 by Jack
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Diethanolamine Systems

Diethanolamine (DBA) is a secondary arnine that has in recent years replaced MEA as the most common chemical solvent. As a secondary amine, DEA is a weaker base than MEA, and therefore DEA systems do not typically suffer the same … Continue reading

18. September 2009 by Jack
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Monoethanolamine Systems

Monoethanolarnine (MBA) is a primary amine that can meet nominal pipeline specifications for removing both H2S and CO2. MBA is a stable compound and in the absence of other chemicals suffers no degradation or decomposition at temperatures up to its … Continue reading

18. September 2009 by Jack
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Amine Processes

Several processes are available that use the basic action of various amines. These amines can be categorized as primary, secondary, or tertiary according to the number of organic groups bonded to the central nitrogen atom. Primary amines are stronger bases … Continue reading

18. September 2009 by Jack
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Chemical Solvents

Chemical solvent processes use an aqueous solution of a weak base tochemically react with and absorb the acid gases in the natural gas stream.The absorption occurs as a result of the driving force of the partial pressure from the gas … Continue reading

18. September 2009 by Jack
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