Piloting SO2 scrubbing of flue gases prior to post combustion CO2 capture – SO2Solve
SINTEF Materialer og kjemi, Shell Cansolv, Canada
The current project is aimed at the development of SO2 capture technology for flue gas desulfurization, as required prior to amine based CO2 capture. In literature, the typical and much referred limit for maximum SO2 level in this context is 10 ppm which is significantly stricter than limits set for SO2 as a pollutant. SO2 capture and management is seen as an essential pre–requisite for successful CO2 capture in several locations. New aspects related to degradation chemistry and reaction also with other pollutants call for an increased and significant attention to important pollutants and trace components in flue gases. Shell Cansolv already has a leading SO2 management system and is developing further their regenerative SO2 capture technology. Important project objectives have been to study new solvent formulations and optimized process operation as well as an innovative deep spec. SO2 removal concept, which has proven very successful. The project has established additional infrastructure at Tiller CCS lab in order to study SO2 management and allows for great flexibility in simultaneous studies of advanced SO2 and CO2 capture schemes, also with addition of other flue gas impurities.