Efficient CO2 Capture from Lime Production by an Indirectly Heated Carbonate Looping Process

13 Pages Posted: 2 Apr 2021 Last revised: 26 Jul 2021

See all articles by Martin Greco-Coppi

Martin Greco-Coppi

Technical University of Darmstadt - Institute for Energy Systems and Technology

Carina Hofmann

Technical University of Darmstadt - Institute for Energy Systems and Technology

Jochen Ströhle

Technical University of Darmstadt

Diethelm Walter

Lhoist Germany Rheinkalk GmbH

Bernd Epple

Technical University of Darmstadt

Date Written: February 15, 2021

Abstract

Lime production is associated with unavoidable process CO2 emissions that can only be avoided by CO2 capture technologies. The indirectly heated carbonate looping (IHCaL) is a promising post-combustion carbon capture technology that can be applied to lime plants with high potential for heat and mass integration. In this work, two concepts for efficiently integrating the IHCaL into lime plants are proposed and evaluated. To study and characterize these concepts, heat and mass balances were established, sensitivity analyses were performed, and key performance indicators were calculated by means of process simulations. The results show an increase of 63% in the direct fuel consumption for a highly integrated concept, but almost 30% of the entire heat input can be converted into electric power via heat recovery steam generation. Direct CO2 emissions are reduced by up to 87% when coal is used as fuel in the IHCaL process, but net negative CO2 emissions could be achieved when using biogenic fuels. Critical points for integration are the preheating of the combustion air, the efficiency of the sorbent solid-solid heat exchanger, and the utilization of the sorbent purge as lime product. The developed models and the obtained results will be used to further develop the integration of the IHCaL into lime plants through both experimental and numerical methods.

Keywords: CO2 capture, lime production, calcium looping, indirect heating, heat pipe, indirectly heated carbonate looping, process modelling

JEL Classification: Q4, Q54, Q55

Suggested Citation

Greco-Coppi, Martin and Hofmann, Carina and Ströhle, Jochen and Walter, Diethelm and Epple, Bernd, Efficient CO2 Capture from Lime Production by an Indirectly Heated Carbonate Looping Process (February 15, 2021). Available at SSRN: https://ssrn.com/abstract=3817331 or http://dx.doi.org/10.2139/ssrn.3817331

Martin Greco-Coppi (Contact Author)

Technical University of Darmstadt - Institute for Energy Systems and Technology ( email )

Otto-Berndt-Str. 2
Darmstadt, 64287
Germany

HOME PAGE: http://www.est.tu-darmstadt.de

Carina Hofmann

Technical University of Darmstadt - Institute for Energy Systems and Technology ( email )

Otto-Berndt-Str. 2
Darmstadt, 64287
Germany

Jochen Ströhle

Technical University of Darmstadt

Universitaets- und Landesbibliothek Darmstadt
Magdalenenstrasse 8
Darmstadt, Hesse D-64289
Germany

Diethelm Walter

Lhoist Germany Rheinkalk GmbH ( email )

Am Kalkstein 1
Wülfrath, 42489
Germany

Bernd Epple

Technical University of Darmstadt

Universitaets- und Landesbibliothek Darmstadt
Magdalenenstrasse 8
Darmstadt, Hesse D-64289
Germany

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