Thermal integration and modelling of the chilled ammonia process
Paper in proceedings, 2011

This work evaluates the performance of the chilled ammonia process (CAP) for CO2 capture. An equilibrium based thermodynamic model of the NH3-CO2-H2O system is combined with a reactor system description of the CAP to estimate the electric efficiency of a state-of-the-art coal-fired power plant equipped with the CAP. The ammonia concentration is a critical design parameter; for the modelled concentrations the specific energy requirement in the reboiler varies between 2200-2800 kJ/kg CO2 captured. When equipped with the CAP for CO2 capture, the electric efficiency of the reference plant decreases with 8 to 10%, depending on cooling water temperature and ammonia concentration.

CO2 capture

Pitzer

Aspen plus

Post combustion

Chilled ammonia process

Author

Henrik Jilvero

Chalmers, Energy and Environment, Energy Technology

Fredrik Normann

Chalmers, Energy and Environment, Energy Technology

Klas Andersson

Chalmers, Energy and Environment, Energy Technology

Filip Johnsson

Chalmers, Energy and Environment, Energy Technology

Energy Procedia. 10th International Conference on Greenhouse Gas Control Technologies; Amsterdam; 19-23 September 2010

1876-6102 (ISSN)

Vol. 4 1713-1720

Subject Categories

Mechanical Engineering

Chemical Engineering

DOI

10.1016/j.egypro.2011.02.045

More information

Created

10/7/2017