1. Dept. of Chem. and Biomol. Eng., Sogang Univ., Seoul, Korea
MAB-N Technology for CO2 Capture based on a Water-lean Polyamine Solvent
Kyunghee Univ.
Sogang Univ.
KIER
Kwang Soon Lee
Dept. of Chem. and Biomol. Eng., Sogang Univ., Seoul, Korea

2. KCRC project on the absorption-based CC technology
Innovative carbon capture technologies
for large-scale CO2 emission sources
Chemistry teams
- Solvent development
- Computational chemistry
Engineering teams
- Solvent evaluation
- Process development
Pilot plant
- 4 Nm3/hr
- 150 Nm3/hr
- 0.5 MW (’19-20)
Stage 1
( )
New solvent
development
Advanced process
Stage 2
( )
1. Solvent stability
2. EERC test (’15)
Nm3/hr (’16-17)
4. 0.5MW (2000 Nm3/hr )
conceptual design
Stage 3
( )
Detail design of
a 0.5MW plant (‘17)
Construction (‘18)
Test (’19-’20)
MAB-E, MAB-N

3. MAB-N Technology

4. MAB-N solvent Non-amine Polyamine Polyamine-based water-lean solvent
H2O
Before degradation
After 3 days at 150℃ under full CO2 loading
MEA
Polyamine-based water-lean solvent
High absorption rate
High thermal stability  high P, T operation
Low thermal energy demand
MAB-N
MAB-E
MAB-N
MEA
MAB-E
Blended
Amine

5. Properties of the MAB-N solvent

6. CO2 Solubility 120℃ 100℃ 80℃ 60℃ MEA 30wt% - 40℃ 40℃
MAB-N Cyclic capacity
50 g/kgsolv
MEA Cyclic capacity
39 g/kgsolv

7. Heat of Reaction
40℃
60℃
80℃
MEA
100℃
120℃

8. Heat Capacity MAB-N : 2.4 – 2.5 kJ/kgK 30wt% MEA : 3.5 – 3.8 kJ/kgK
MEA 30wt% - fresh
MEA 30wt% gCO2/kgsolv
MAB-N - fresh
MAB-N – 55 gCO2/kgsolv
MAB-N : – 2.5 kJ/kgK
30wt% MEA : 3.5 – 3.8 kJ/kgK

9. Absorption Rate and Viscosity
MAB-N
40℃
MEA
30wt%

10. Thermal degradation Vaporization loss 150oC 60 gCO2/kg MEA 30wt%
MAB-N
(72 h)
MAB-N
(668 h)

11. Corrosion *Rich loading, 150℃, 1 week Carbon steel specimen MEA 30wt%
MAB-N
*Rich loading, 150℃, 1 week
Carbon steel specimen

12. Simulation Flue gas with CO2 of 12.7 vol% at 1800 Nm3/hr
CO2 recovery : 90%
Absorber
D = 0.9m, H=15m
Inter-stage cooling : one for MEA, two for MAB-N
4) Stripper
D = 0.8m, H = 6m
Pressure : bar
5) MTA in the main heat exchanger = 5 – 20 ℃

13. Simulation results
2bar
2bar
2bar

14. FGCPP - Energy analysis
■ MEA 30wt% / Stripper pressure 2atm / MTA 5℃ / IC x1
■ MAB-N / Stripper pressure 2atm / MTA 5℃ / IC x2
■ MAB-N / Stripper pressure 5atm / MTA 5℃ / IC x2
Reboiler duty
Heat of reaction
Sensible heat
Latent heat

15. Simulation results MEA Reboiler duty MAB-N 5m / 2.5m 10m / 5m 15m / 6m

16. Test Results in the 150 Nm3/hr Unit
MTA=5℃
Heat loss
150 Nm3/hr (0.025 MW) Unit

17. Test Results in the 150 Nm3/hr Unit
Degradation
MAB-N
MEA

18. 2,000 Nm3/hr Pilot Plant In a coal-fired power plant in Tae-ahn
Commissioning from March.
Tests for MAB-N from September.

19. Thanks for watching
Any questions?

20. Water Balance Condenser at 30℃ Lean solvent at ~ 40℃ Lean solvent T CW
Lean solvent
at ~ 40℃
Lean solvent T 
amount of water transfer to the gas phase  water balance controlled
Absorber
Gas inlet
at 30℃

21. Water wash for emission control Water and amine condensation
Environmental Emissions
Acid water
30℃
Water wash for emission control CW
30℃
Water and amine condensation CW
T = 55℃
Absorber