Naguleswaran, N; Nagesh, N; Gudiyor Veerabhadrappa, M (2024) Method development for performance testing of carbon capture solvents using monoethanolamine (MEA) as a benchmark solvent under post-combustion capture conditions. NPL Report. ENV 53

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Abstract

A traceable method for performance testing of carbon capture solvents, by using MEA as a benchmark solvent, under post-combustion capture conditions was developed using the compact Parr reactor. This high-pressure reactor system was combined with a continuous online monitoring system involving a mass spectrometer analyser. Carbonation efficiency of MEA was tested by varying two experimental parameters, namely the amount of the capture solvent and the CO2 concentration of the primary reference gas mixture used for the carbonation experiment. CO2 uptake by MEA under the industrial flue gas condition using NPL PRM (containing 15 cmol/mol of CO2 in N2) varied between 0.40 – 0.42 moles CO2 per mole of MEA. The measurement model reported an expanded uncertainty of 14.48% with a confidence level of 95% (k = 2). These preliminary results are in good agreement with the literature reports involving experiments under similar conditions. This validates the Parr reactor setup for carrying out CO2 capture performance evaluation of various industrially relevant carbon capture solvents under different experimental conditions. The method developed here using MEA as the benchmark capture solvent and NPL PRMs, can be used to compare the carbonation efficiency of other industrially relevant amine solvents. The developed method directly validates the efficacy of different capture technologies. It will also give useful insights on capture efficiency of different solvents helping technology developers to improvise on their capture materials. The system can also be used to study capture other important solvent characteristics such as, stability, cyclability over a period of time and accelerated aging experiments that identifies, quantifies and monitors any degradation products that evolve from the CO2 capture solvent.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	ENV 53
Subjects:	Environmental Measurement > Atmospheric Science, Emission and Security
Divisions:	Atmospheric Environmental Sciences
Identification number/DOI:	10.47120/npl.ENV53
Last Modified:	28 Jan 2025 11:06
URI:	https://eprintspublications.npl.co.uk/id/eprint/10113