Acid gas treating selection basis:
- Type of acid contaminants present in the gas stream
- Concentrations of each contaminant and degree of removal required
- Gas volume, temperature, and pressure
- The desirability of selectively removing one or more of the contaminants without removing the others
- The feasibility of recovering sulfur
- The presence and amount of heavy hydrocarbons and aromatics in the gas
- The environmental conditions required at the plant site