How much can novel solid sorbents reduce the cost of post-combustion <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e555" altimg="si168.svg"><mml:msub><mml:mrow><mml:mi mathvariant="normal">CO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> capture? A techno-economic investigation on the cost limits of pressure–vacuum swing adsorption

This paper focuses on identifying the cost limits of two single-stage pressure–vacuum swing adsorption (PVSA) cycles for post-combustion CO 2 capture if “ideal” zero-cost adsorbent can be discovered. Through an integrated techno-economic optimisation, we simultaneously optimise properties (adsorption isotherms and particle morphology) process design variables to determine lowest possible avoided (excluding conditioning, transport storage) different industrial flue gas compositions flow rates. The PVSA ranges from 87.1 10.4 € per tonne avoided, corresponding feed 3.5 mol% 30 mol %, respectively. costs a monoethanolamine based absorption process, using heat natural plant, are 76.8 54.8 respectively showing that attractive streams with high compositions. adsorbents needed attain have range affinities close zero N adsorption, demonstrating promise discovery development. need optimising morphology conditions emphasised. • Minimum ideal “zero-cost” calculated. Process inversion optimises simultaneously. cost: €/t (30% in feed) (3.5% feed). concentration (steel, cement). Ideal adsorbent: Wide affinity negligible affinity.