01 / What it is
MDEA
Methyldiethanolamine (MDEA) is used as an aqueous solvent in selected gas-sweetening and acid-gas removal services. Formulation, operating conditions and equipment design influence selectivity and overall system performance.
02 / Where it is used
Application areas
- Natural-gas sweetening
- Refinery and process-gas treating
- H₂S removal
- CO₂ removal where process design supports the duty
03 / Application context
The operating system matters.
Fresh solvent is only one part of an operating amine unit. Heat-stable salts, degradation products, hydrocarbons, particulates, corrosion products, filtration, antifoam practice and regenerator performance should be reviewed as one system.
04 / Selection considerations
Inputs that shape evaluation
| Parameter | Why it matters | Typical evaluation input |
|---|---|---|
| Feed gas | Acid-gas loading and hydrocarbons define absorber duty. | Complete inlet gas analysis and variability |
| Outlet specification | H₂S and CO₂ requirements determine required removal. | Treated-gas targets and analyser trends |
| Solvent condition | Contaminants can increase corrosion, foaming or energy use. | Laboratory analysis and solvent history |
| Circulation and regeneration | Flow and heat input shape capacity and lean loading. | Circulation, temperatures and reboiler duty |
| Mechanical operation | Contacting, filtration and carryover affect results. | Tower internals, filters and observed foaming |
05 / Technical inquiry
Useful information to include
- Feed and treated-gas analyses
- Solvent concentration and laboratory analysis
- Circulation and temperature data
- Foaming/corrosion/degradation history
- Absorber and regenerator configuration
Related / Industries
Related / Technologies