Project information

CAESAR is co-funded by the European Commission under the Seventh Framework Programme. CASEAR is a small or medium-scale focused research project.


Starting date:  1 January 2008

Duration:            48 months

Budget:             3,15 million €

EU contribution: 2,26 million €

Contract No:         213206

Co-ordinator:       Energy research Centre of the Netherlands (ECN)

Welcome to the CAESAR website!

CArbon-free Electricity by SEWGS: Advanced materials, Reactor-, and process design


The project CAESAR is building on work performed within the FP6 IP CACHET (see One of the four pre combustion CO2 capture technologies that are being developed in CACHET is the Sorption Enhanced Water Gas Shift (SEWGS) process. The SEWGS process produces hot, high pressure H2 in a catalytic CO shift reactor with simultaneous adsorption of CO2 on a high temperature adsorbent. The system operates in a pressure swing cycle with steam for adsorbent regeneration. CAESAR takes into account the lessons learned in CACHET in order to bring the SEWGS process a big step closer to the market.



The overall objective of CAESAR is the reduction of energy penalty and costs of the SEWGS CO2 capture process through optimization of sorbent materials, reactor- and process design. It is emphasized that with an optimized SEWGS process CO2 avoidance cost could be reduced to < € 15/ton CO2. To achieve this, CAESAR takes a necessary step back such that novel, more efficient CO2 sorbents with regeneration steam/CO2 ratios less 2 will be developed. This value is needed to bring the CO2 avoidance costs to about 15 €/ton. Heat integration can further enhance the efficiency.


Other applications

CAESAR will focus on the application of the optimized SEWGS process for pre- combustion CO2 capture from natural gas but will also look into the possible application of the SEWGS process in IGCC power plants fed by coal or refinery residues and off-gas of blast furnaces in the steel industry.