• 0 Coal and gas fired power plants are the main contributors of CO2 emissions. CAPSOL technology offers a competitive solution for the efficient post-combustion CO2 capture. (Public Power Corporation, Agios Dimitrios Power Plant)…
  • 1 CAPSOL incorporates state-of-the-art thermodynamic property prediction and Computer Aided Molecular Design for advanced solvents and blends. (Source : Imperial College - London)…
  • 2 CAPSOL technology utilizes multi-level design and selection of validated solvent-process schemes with optimum economic and controllability features. (Papadopoulos A.I., and P. Seferlis, “A framework for solvent selection based on optimum separation process design and controllability properties”,Computer Aided Chemical Engineering, 26, 177-182, 2009.)…
  • 3 CAPSOL aims at optimum design of absorption/desorption equipment and column internals through advanced modelling and experimentation (Kenig, E.Y. (2008), Chem. Eng. Res. Des. 86, Part A, 1059–1072)…
  • 4 CAPSOL aims at sustainable CO2 capture technology through the Environmental Performance Strategy Map (De Benedetto L., Klemeš J., 2009. J. Clean. Prod., 17(10), 900-906)…
  • 5 CAPSOL targets plant level (resources) integration of CO2 emitting and capture plants through total-site and plant-wide optimization analysis (Varbanov, P., Perry, S., Klemeš J.,Smith, R., (2005), Applied Thermal Engineering, 25, 985-1001)…

CAPSOL controllability analysis identifies favorable synergies among solvent-flowsheet-control structure


Motivating example.

How does the control system cope with variation in the flue gas stream (e.g., flowrate, composition, temperature), kinetic and thermodynamic properties? How is amine balanced in the system when degradation occurs?


The control system should be able to compensate for the effects of disturbances and alleviate their impact on the control objectives.

  • Control Objectives: Maintain 90% CO2 capture, lean solvent temperature.
  • Manipulated variables: Penalize reboiler and cooling duties, amine make-up.



Control structure for an intercooled absorber flowsheet. Red circles denote the manipulated variables, whereas green circles denote the controlled variables.

Damartzis T., A. I. Papadopoulos, and P. Seferlis, “A Process Design
and Operability Framework for Post-Combustion CO2 Capture Systems and
Solvents: Integrated Assessment and Selection”, Paper 681e, Annual
AIChE Meeting, Atlanta, USA, 2014.