Title: Suitability of Hekimhan siderite as oxygen carrier in chemical looping combustion

Authors: Merve Durmaz; Nesibe Dilmaç; Ömer Faruk Dilmaç

Addresses: Department of Chemical Engineering, Çankırı Karatekin University, 18200 Uluyazı/Çankırı, Turkey ' Department of Chemical Engineering, Çankırı Karatekin University, 18200 Uluyazı/Çankırı, Turkey ' Department of Chemical Engineering, Çankırı Karatekin University, 18200 Uluyazı/Çankırı, Turkey

Abstract: In this study, siderite ore from Hekimhan (Malatya, Turkey) was calcined and tested as the oxygen carrier (OC) in a laboratory-scale chemical looping combustion (CLC) setup by using CO and H₂ mixtures. Fuel conversion of 92% was obtained as a mean of four tests performed at 850°C. It was determined that calcination of the ore before the tests led to the generation of MnFe₂O₄, a bimetallic OC that includes the synergistic benefits of both metal oxides. It was concluded that siderite is a proper OC for pilot or sub-pilot applications.

Keywords: chemical looping combustion; CLC; oxygen carrier; siderite; manganese ferrite.

DOI: 10.1504/IJGW.2023.128850

International Journal of Global Warming, 2023 Vol.29 No.1/2, pp.108 - 120

Received: 25 Nov 2021
Received in revised form: 09 May 2022
Accepted: 11 May 2022
Published online: 07 Feb 2023 *

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