All property packages
Electrolyte NRTL (CO₂+H₂S — MDEA/PZ) property package
Bounded electrolyte model for CO₂ AND H₂S over aqueous MDEA promoted with piperazine (mixed-amine acid-gas treating): protonation + PZ carbamate/dicarbamate + bicarbonate/bisulfide speciation with Davies activity. Equilibrium capacity/selectivity only — NOT rate-based (PZ's kinetic CO₂ promotion and MDEA's kinetic H₂S selectivity are not modeled); the PZ carbamate constants and H₂S path are screening-grade.