AMP post-combustion CO2 capture (hindered amine)

The MEA capture loop run on 2-amino-2-methyl-1-propanol: the same flue gas (12% CO2 at 1.1 bar), 30 wt% AMP (8 mol%) at a lean loading of 0.10, steam stripping at 1.9 bar and an overhead condenser. AMP is sterically hindered — its carbamate is unstable, so CO2 goes to bicarbonate and one mole of amine can carry one mole of CO2 where MEA's carbamate stoichiometry stops at half — and the enrtl-amp package's speciation reproduces that: the rich loading comes out at 0.70 mol/mol against the MEA card's 0.53, so 500 mol/s of solvent does what 650 mol/s of MEA did, with 3.1 MW on the rich heater instead of 3.9. The CO2 product is 27.7 mol/s at 93 mol%. Same honesty notes as the MEA card: Kremser stage models, K at the entering liquid, loop open, regeneration to zero loading. The AMP constants are screening-grade (see flowsim/solver/thermo/enrtl.py); the trend against MEA is the physics, the third digit is not.