Aerosol Emission at a Post Combustion CO2 Capture Plant at Twence (Wte Facility)

Abstract

Amine emissions in post combustion CO2 capture (PCC) have a significant impact on process economics and the environment. The volatile nature of amine-based solvents in combination with aerosol formation can lead to amine emissions much higher than the design limit of PCCC plants. Aerosol management methods were implemented at the PCC pilot at Twence, a Waste-to-Energy plant in the east of The Netherlands. TNO carried out measurement campaigns at Twence with the aim to quantify amine emissions (both volatile and aerosol-based). The measurements indicated the necessity of implementing an aerosol mitigation technology, and a Brownian Demister Unit (BDU) was installed at the plant. The BDU removed more than 99% of the small particles (diameter below 5μm) from the flue gas, effectively controlling the MEA emissions at an average of 2.7 mg/Nm3 at the pilot installation outlet.