Development of Process Model of CESAR1 Solvent System and Validation with Large Pilot Data

23 Pages Posted: 14 Nov 2022

See all articles by Joshua Morgan

Joshua Morgan

National Energy Technology Laboratory (NETL); NETL Support Contractor

Matthew Campbell

Technology Centre Mongstad

Koteswara Rao Putta

Technology Centre Mongstad

Muhammad Ismail Shah

Technology Centre Mongstad

Michael Matuszewski

Government of the United States of America - National Energy Technology Laboratory (NETL)

Benjamin Omell

National Energy Technology Laboratory

Date Written: November 14, 2022

Abstract

The United States (U.S.) Department of Energy (DOE)-sponsored Carbon Capture Simulation for Industry Impact (CCSI2) is collaborating with Norway’s Technology Centre Mongstad (TCM) on the development and validation of a process model of the CESAR1 solvent system for post-combustion carbon capture applications. The CESAR1 solvent, developed through the CO2 Enhanced Separation and Recovery (CESAR) project, is an aqueous blend of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) with concentrations of approximately 3 M and 1.5 M, respectively. The process model, developed in the Aspen Plus® software platform, uses thermodynamic and kinetic models from the AMP-H2O-CO2 and PZ-H2O-CO2 system models distributed by Aspen Tech. Enhancements in this work include calibrating the interaction parameters for the AMP-PZ pair with thermodynamic data from the open literature for the AMP-PZ-H2O-CO2 system and updating the reaction kinetics parameters to ensure thermodynamic consistency with the chemical equilibria. The process model is validated with a set of seven steady-state test runs, collected over a wide range of operating conditions at the pilot plant at TCM (12 MWe scale) with natural gas-based combined cycle turbine flue gas (~ 3.5 vol% CO2). The integrated process model developed for the TCM pilot plant includes rate-based models for the CO2 absorption and solvent regeneration processes and predicts key output variables (e.g., CO2 capture percentage, specific reboiler duty) within ± 5% for the validation data set. This paper presents model development and validation work for an initial version of the CESAR1 process model along with discussion of future updates to be made to the model prior to its open-source release.

Keywords: post-combustion capture, pilot-scale testing, process modeling, CESAR1 solvent

Suggested Citation

Morgan, Joshua and Campbell, matthew and Putta, Koteswara Rao and Shah, Muhammad Ismail and Matuszewski, Michael and Omell, Benjamin, Development of Process Model of CESAR1 Solvent System and Validation with Large Pilot Data (November 14, 2022). Proceedings of the 16th Greenhouse Gas Control Technologies Conference (GHGT-16) 23-24 Oct 2022, Available at SSRN: https://ssrn.com/abstract=4276820 or http://dx.doi.org/10.2139/ssrn.4276820

Joshua Morgan (Contact Author)

National Energy Technology Laboratory (NETL) ( email )

626 Cochrans Mill Road
Pittsburgh, PA 15236
United States

NETL Support Contractor ( email )

626 Cochrans Mill Road
Pittsburgh, PA 15236
United States

Matthew Campbell

Technology Centre Mongstad

Mongstad, 5954
Norway

Koteswara Rao Putta

Technology Centre Mongstad ( email )

Mongstad, 5954
Norway

Muhammad Ismail Shah

Technology Centre Mongstad ( email )

Mongstad
Norway

Michael Matuszewski

Government of the United States of America - National Energy Technology Laboratory (NETL)

Pittsburgh, PA
United States

Benjamin Omell

National Energy Technology Laboratory

3610 Collins Ferry Rd
Morgantown, WV 26507
United States

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