Answer 1

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