Analysis of flexible operation of CO2 capture plants: Predicting solvent emissions from conventional and advanced amine systems

8 Pages Posted: 26 Mar 2021

See all articles by Charithea Charalambous

Charithea Charalambous

Heriot-Watt University

Ahmed Saleh

Heriot-Watt University

Mijndert van der Spek

University of Oslo

Georg Wiechers

RWE Power AG

Peter Moser

RWE Power AG

Arjen Huizinga

TNO, NL

Paul Gravesteijn

affiliation not provided to SSRN

Jasper Ros

TNO

Juliana Garcia Moretz-Sohn Monteiro

TNO, NL

Earl Goetheer

TNO Information and Communication Technology in Delft

Susana Garcia

Heriot-Watt University

Date Written: February 15, 2021

Abstract

In our previous work, we reported results on solvent management, emissions, and dynamic behavior from an 18-month testing campaign with monoethanolamine (MEA) at the PCC pilot plant at Niederaussem. In this study, we extended our work to include the CESAR1 solvent, a blend of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) in water, as part of our efforts in the ALING-CCUS project to evaluate if CESAR1 could be established as a new benchmark solvent for post-combustion capture. From our long-term (>12,275 h) testing experience, CESAR1 has shown a substantial promise in terms of lower specific solvent regeneration energy demand and stability to degradation in comparison with MEA. However, during a comprehensive series of parametric tests with the CESAR1 solvent, it was observed that amine emissions are significantly higher, especially under transient operation (AMP: 30 – 100 mg/m3 (STP); PZ: 2 – 30 mg/m3 (STP); MEA: <8 mg/m3 (STP)). This work presents step response functions for predicting the time delay and gain in emissions for each parametric/dynamic test performed. Some dynamic tests show a fast response and high emission values and, therefore, can be used to reduce emissions during flexible plant operation. These control actions are mainly the lean solvent and/or water wash temperature increase and are similar to those observed in the MEA campaign. Our testing campaign helps in advancing the fundamental understanding of emissions, establishing optimal mitigation strategies, and providing important insights for future development of models regarding solvent emissions and degradation.

Keywords: CO2 capture, flexible operation, solvent emissions, dynamic testing, CESAR1, AMP PZ, MEA

Suggested Citation

Charalambous, Charithea and Saleh, Ahmed and van der Spek, Mijndert and Wiechers, Georg and Moser, Peter and Huizinga, Arjen and Gravesteijn, Paul and Ros, Jasper and Garcia Moretz-Sohn Monteiro, Juliana and Goetheer, Earl and Garcia, Susana, Analysis of flexible operation of CO2 capture plants: Predicting solvent emissions from conventional and advanced amine systems (February 15, 2021). Proceedings of the 15th Greenhouse Gas Control Technologies Conference 15-18 March 2021, Available at SSRN: https://ssrn.com/abstract=3812299 or http://dx.doi.org/10.2139/ssrn.3812299

Charithea Charalambous (Contact Author)

Heriot-Watt University ( email )

Riccarton
Edinburgh EH14 4AS, Scotland EH14 1AS
United Kingdom

HOME PAGE: http://https://rccs.hw.ac.uk/

Ahmed Saleh

Heriot-Watt University

Research Centre for Carbon Solutions (RCCS)
School of Engineering and Physical Sciences
Edinburgh EH14 4AS, Scotland EH14 1AS
United Kingdom

Mijndert Van der Spek

University of Oslo

PO Box 6706 St Olavs plass
Oslo, N-0317
Norway

Georg Wiechers

RWE Power AG

Huyssenallee 2
Essen, 45128
Germany

Peter Moser

RWE Power AG ( email )

Ernestinenstrasse 60
Essen, 45141
Germany

Arjen Huizinga

TNO, NL

Netherlands

Paul Gravesteijn

affiliation not provided to SSRN

Jasper Ros

TNO ( email )

Leeghwaterstraat 44
Delft, 2628 CA
Netherlands

Earl Goetheer

TNO Information and Communication Technology in Delft

Delft
Netherlands

Susana Garcia

Heriot-Watt University ( email )

Riccarton
Edinburgh EH14 4AS, EH14 1AS
United Kingdom

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