Issue 11, 2020

A single-component water-lean post-combustion CO2 capture solvent with exceptionally low operational heat and total costs of capture – comprehensive experimental and theoretical evaluation

Abstract

A comprehensive evaluation of a recently developed water-lean amine-based solvent, namely N-(2-ethoxyethyl)-3-morpholinopropan-1-amine (2-EEMPA), has been performed to analyze its post-combustion CO2 capture performance. This evaluation comprises (1) fundamental characterization of the solvent–CO2 interaction using vapor–liquid equilibria, kinetics and viscosity measurements; (2) process characterization of the CO2 capture performance as measured in a laboratory scale continuous flow system and via Aspen Plus® simulation using a flue gas simulant; as well as (3) a full techno economic analysis of the capture process at industrial scale with corresponding projections of critical metrics. This paper summarizes the many parts of this comprehensive evaluation and shows how the various parts come together to empower validated conclusions about its process performance. Notably, it is projected that this solvent can operate at a regeneration heat rate of 2.0 GJ per tonne CO2 for post-combustion capture, and at a total cost of capture of $50.6/tonne CO2. With further process optimization significant reductions in the capture cost are predicted.

Graphical abstract: A single-component water-lean post-combustion CO2 capture solvent with exceptionally low operational heat and total costs of capture – comprehensive experimental and theoretical evaluation

Supplementary files

Article information

Article type
Communication
Submitted
13 Aug 2020
Accepted
21 Sep 2020
First published
23 Sep 2020

Energy Environ. Sci., 2020,13, 4106-4113

Author version available

A single-component water-lean post-combustion CO2 capture solvent with exceptionally low operational heat and total costs of capture – comprehensive experimental and theoretical evaluation

R. F. Zheng, D. Barpaga, P. M. Mathias, D. Malhotra, P. K. Koech, Y. Jiang, M. Bhakta, M. Lail, A. V. Rayer, G. A. Whyatt, C. J. Freeman, A. J. Zwoster, K. K. Weitz and D. J. Heldebrant, Energy Environ. Sci., 2020, 13, 4106 DOI: 10.1039/D0EE02585B

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