Outcomes from pilot plant trials of precipitating potassium carbonate solvent absorption for CO2 capture from a brown coal fired power station in Australia

Abstract

A precipitating potassium carbonate (K2CO3) based solvent absorption process has been developed for capturing carbon dioxide (CO2) from industrial sources. Demonstration of this process has been completed using real flue gas in a pilot plant located at Hazelwood power station in Victoria, Australia. The pilot plant was designed to capture up to 1 tonne per day of CO2 and was operated over a number of campaigns to test the absorption performance of a liquid solvent (30 wt% K2CO3), a precipitating solvent (45 wt% K2CO3) and a promoted precipitating solvent (promoter with 45 wt% K2CO3). The main aim of this study was to collect operational data from the industry based pilot plant absorber in or..