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Go ES, Ling JLJ, Solanki BS, Ahn H, Show PL, Lee SH. Current advances and future prospects of in-situ desulfurization processes in oxy-fuel combustion reactors. ENVIRONMENTAL RESEARCH 2024; 263:119982. [PMID: 39270960 DOI: 10.1016/j.envres.2024.119982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 08/27/2024] [Accepted: 09/10/2024] [Indexed: 09/15/2024]
Abstract
Oxy-fuel circulating fluidized bed combustion is known as one of the most potent fuel combustion technologies that capture ultra-low greenhouse gases and pollutant emissions. While many investigations have been conducted for carbon capturing, the associated in-situ desulfurization process using calcium-based sorbents should also be underlined. This paper critically reviews the effects of changes in the operating environment on in-situ desulfurization processes compared to conventional air combustion. A comprehensive understanding of the process, encompassing hydrodynamic, physical and chemical aspects can be a guideline for designing the oxy-fuel combustion process with effective sulfur removal, potentially eliminating the need of a flue gas desulfurization unit. Results from thermogravimetric analyzers and morphological changes of calcium-based materials were presented to offer an insight into the sulfation mechanisms involved in the oxy-fuel circulating fluidized beds. Recently findings suggested that in-situ direct desulfurization is influenced not only by the desulfurization kinetics but also by the fluidization characteristics of calcium-based materials. Therefore, a complex reaction analysis that incorporated oxy-combustion reactions, computational fluid dynamics modeling, in-situ desulfurization reaction models and particle behavior can provide a thorough understanding of desulfurization processes across the reactor. Meanwhile, machine learning as a robust tool to predict desulfurization efficiency and improve operational flexibility should be applied with consideration of environmental improvement and economic feasibility.
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Affiliation(s)
- Eun Sol Go
- Department of Environment and Energy, Jeonbuk National University, 567, Baekje-daero, Jeonju-si, Jeollabuk-do, 54896, South Korea
| | - Jester Lih Jie Ling
- Department of Environment and Energy, Jeonbuk National University, 567, Baekje-daero, Jeonju-si, Jeollabuk-do, 54896, South Korea
| | - Bhanupratap S Solanki
- Department of Environment and Energy, Jeonbuk National University, 567, Baekje-daero, Jeonju-si, Jeollabuk-do, 54896, South Korea
| | - Hyungwoong Ahn
- Institute for Materials and Processes, School of Engineering, The University of Edinburgh, Robert Stevenson Road, Edinburgh, EH9 3FB, UK
| | - Pau Loke Show
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Department of Chemical and Environmental Engineering, University of Nottingham, Malaysia, 43500, Semenyih, Selangor Darul Ehsan, Malaysia
| | - See Hoon Lee
- Department of Environment and Energy, Jeonbuk National University, 567, Baekje-daero, Jeonju-si, Jeollabuk-do, 54896, South Korea; Research Institute for Energy and Mineral Resources Development, Jeonbuk National University, 567, Baekje-daero, Jeonju-si, Jeollabuk-do, 54896, South Korea.
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Zhang Y, Qian W, Zhou P, Liu Y, Lei X, Li B, Ning P. Research on red mud-limestone modified desulfurization mechanism and engineering application. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118867] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Chen S, Qin C, Deng T, Yin J, Ran J. Particle-scale modeling of the simultaneous carbonation and sulfation in calcium looping for CO2 capture. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117439] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Reichelt J, Pfrang-Stotz G, Bergfeldt B, Seifert H, Knapp P. Formation of deposits on the surfaces of superheaters and economisers of MSW incinerator plants. WASTE MANAGEMENT (NEW YORK, N.Y.) 2013; 33:43-51. [PMID: 23017646 DOI: 10.1016/j.wasman.2012.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 08/20/2012] [Accepted: 08/20/2012] [Indexed: 06/01/2023]
Abstract
Mineralogical and chemical investigations of deposits from superheaters and economisers from a MSWI plant in Mannheim, Germany, lead to a classification system which provides information about the most critical parameters leading to fouling and corrosion. With the help of this classification system parameters like the geometry of boilers and the waste input can be changed in order to prolong run times between revisions and enhance energy efficiency of MSWI plants.
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Affiliation(s)
- J Reichelt
- IBR, Obergrombacher Strasse 29, D-76646 Bruchsal, Germany
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