In this section
@inbook{Ward:2024:10.1016/B978-0-443-28824-1.50038-7,
author = {Ward, A and Papathanasiou, MM and Pini, R},
booktitle = {Computer Aided Chemical Engineering},
doi = {10.1016/B978-0-443-28824-1.50038-7},
pages = {223--228},
title = {Design and Optimization of a Steam-assisted Adsorption Process for Direct Air Capture},
url = {http://dx.doi.org/10.1016/B978-0-443-28824-1.50038-7},
year = {2024}
}
TY - CHAP
AB - Purification of CO<inf>2</inf> from atmospheric air via a steam-assisted temperature-vacuum swing adsorption (S-TVSA) process is a promising approach for efficiently achieving greenhouse gas removal. In this work, we present a computational framework for design and optimization of S-TVSA direct air capture processes by employing detailed numerical simulations, variance-based sensitivity analysis, and black-box optimization. We develop a numerical simulation platform for S-TVSA processes through solution of the governing dynamic material, momentum, and energy balance equations via a finite volume approach. We then use the developed simulator to conduct variance-based sensitivity analysis to quantify the influence of each process operating condition on all key process KPIs, in terms of both first and second order effects. Further, we conduct constrained multi-objective optimization to maximize the efficiency of S-TVSA direct air capture in terms of maximum productivity and minimum energy usage, while achieving high CO<inf>2</inf> purity. The results show that the system performance is strongly non-linear with respect to the operating decisions, and that process design by rigorous optimization is central to obtaining near-optimal performance. Further, we identify that under optimal operating conditions, the energy usage of S-TVSA direct air capture is not prohibitively large for wide-scale deployment - but the system productivity is low. This challenges the emerging view of co-locating direct air capture to low-carbon electricity and heat provision without consideration of the available land footprint in the vicinity of such resources. Results recommend that significant future research efforts should be dedicated towards enhancing the productivity of S-TVSA direct air capture processes to enable their deployment at climate-relevant scales.
AU - Ward,A
AU - Papathanasiou,MM
AU - Pini,R
DO - 10.1016/B978-0-443-28824-1.50038-7
EP - 228
PY - 2024///
SP - 223
TI - Design and Optimization of a Steam-assisted Adsorption Process for Direct Air Capture
T1 - Computer Aided Chemical Engineering
UR - http://dx.doi.org/10.1016/B978-0-443-28824-1.50038-7
ER -