3.1 Capture Technology Options
The optimum post combustion CO2 capture (PCC) technology selection should consider project-specific parameters including the project site, technical constraints and integration specifics. It should also take into consideration the stage of development and maturity of the PCC technologies and the expected development timeframes.
Since the Getica CCS demo project is planned for operation in 2016, the technology selection has been limited to the Chilled Ammonia Process (CAP) and the AdvancedProcess (AAP), as these technologies are considered as being the most advanced in their development and closest to commercialisation at a scale applicable to this project.
The advantages of using an ammoniated solution as a CO2 absorbent include:
- low heat of reaction;
- high CO2 absorption rates;
- high pressure regeneration;
- low sensitivity to impurities; and
- low absorbent cost.
Advantages of the AAP compared to conventional monoethanolamine (MEA) scrubbing include:
- more energy efficient capture of CO2;
- lower solvent degradation rates, leading to lower chemical consumption and lower production of effluents and waste;
- lower corrosivity, leading to less costly plants; and
- advanced and more flexible schemes, providing potential for further energy savings.
On 10 December 2010 a meeting took place at the Turceni power plant, with the participation of ISPE and the technology providerCarbon Capture GmbH (ACC). At this meeting, a decision was made to utilise the CAP technology.