The potential of molten metal oxide sorbents for carbon capture at high temperature: Conceptual design

摘要: Abstract Molten metal oxides represent a new opportunity for climate change mitigation through carbon capture. This study presents conceptual coal fired power plant design that utilizes these liquid phase sorbents high temperature CO2 capture coupled with the simultaneous removal of other acid gases. To effectively recover heat from process both absorber and desorber are located within boiler steam is used near–isothermal regeneration sorbent. The potential thermodynamic was evaluated simulation, results indicating molten could outperform state-of-the-art amine-based systems An energy penalty as low 6% points projected using sorbents, half amine system. initial economic evaluation confirmed benefits sorbents; optimized design, levelized cost electricity increased 39% (25%–49%) relative to without expected avoided $34/tonne ($18/tonne $56/tonne) which 38% (27%–50%) lower than competitive social CO2. Challenges were identified future work proposed justified by mitigate at current allow.