Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects
Under China’s “dual carbon” goals (carbon peaking and carbon neutrality), the utilization of high-chlorine coal faces significant challenges due to its abundant reserves in regions such as Xinjiang and its notable environmental impacts. This study systematically investigates the combustion character...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/12/3011 |
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| author | Kang Hong Tuo Zhou Man Zhang Yuyang Zeng Weicheng Li Hairui Yang |
| author_facet | Kang Hong Tuo Zhou Man Zhang Yuyang Zeng Weicheng Li Hairui Yang |
| author_sort | Kang Hong |
| collection | DOAJ |
| description | Under China’s “dual carbon” goals (carbon peaking and carbon neutrality), the utilization of high-chlorine coal faces significant challenges due to its abundant reserves in regions such as Xinjiang and its notable environmental impacts. This study systematically investigates the combustion characteristics, environmental risks, and control strategies for high-chlorine coal. Key findings reveal that chlorine release occurs in three distinct stages, namely low-temperature desorption, medium-temperature organic bond cleavage, and high-temperature inorganic decomposition, with release kinetics governed by coal metamorphism and the reaction atmosphere. Chlorine synergistically enhances mercury oxidation through low-activation-energy pathways but exacerbates boiler corrosion via chloride–sulfate interactions. Advanced control technologies—such as water washing, calcium-based sorbents, and integrated pyrolysis–gasification systems—demonstrate substantial emission reductions. However, challenges remain in addressing high-temperature corrosion and optimizing multi-pollutant synergistic control. This study provides critical insights into the clean utilization of high-chlorine coal, supporting sustainable energy transitions. |
| format | Article |
| id | doaj-art-e756a8e25b0741dc9432e9f8b9fd8008 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-e756a8e25b0741dc9432e9f8b9fd80082025-08-20T03:27:14ZengMDPI AGEnergies1996-10732025-06-011812301110.3390/en18123011Combustion Utilization of High-Chlorine Coal: Current Status and Future ProspectsKang Hong0Tuo Zhou1Man Zhang2Yuyang Zeng3Weicheng Li4Hairui Yang5School of Electrical Engineering, Xinjiang University, Urumqi 830017, ChinaDepartment of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaDongfang Boiler Co., Ltd., Dongfang Electric Group, Zigong 643099, ChinaSchool of Electrical Engineering, Xinjiang University, Urumqi 830017, ChinaUnder China’s “dual carbon” goals (carbon peaking and carbon neutrality), the utilization of high-chlorine coal faces significant challenges due to its abundant reserves in regions such as Xinjiang and its notable environmental impacts. This study systematically investigates the combustion characteristics, environmental risks, and control strategies for high-chlorine coal. Key findings reveal that chlorine release occurs in three distinct stages, namely low-temperature desorption, medium-temperature organic bond cleavage, and high-temperature inorganic decomposition, with release kinetics governed by coal metamorphism and the reaction atmosphere. Chlorine synergistically enhances mercury oxidation through low-activation-energy pathways but exacerbates boiler corrosion via chloride–sulfate interactions. Advanced control technologies—such as water washing, calcium-based sorbents, and integrated pyrolysis–gasification systems—demonstrate substantial emission reductions. However, challenges remain in addressing high-temperature corrosion and optimizing multi-pollutant synergistic control. This study provides critical insights into the clean utilization of high-chlorine coal, supporting sustainable energy transitions.https://www.mdpi.com/1996-1073/18/12/3011occurrence modes and geochemical characteristics of chlorinerelease dynamics during high-chlorine coal combustionchlorine-induced corrosion and synergistic effectspollution control technologies (mercury/dioxins)environmental–ecological impacts and atmospheric chemistry |
| spellingShingle | Kang Hong Tuo Zhou Man Zhang Yuyang Zeng Weicheng Li Hairui Yang Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects Energies occurrence modes and geochemical characteristics of chlorine release dynamics during high-chlorine coal combustion chlorine-induced corrosion and synergistic effects pollution control technologies (mercury/dioxins) environmental–ecological impacts and atmospheric chemistry |
| title | Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects |
| title_full | Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects |
| title_fullStr | Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects |
| title_full_unstemmed | Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects |
| title_short | Combustion Utilization of High-Chlorine Coal: Current Status and Future Prospects |
| title_sort | combustion utilization of high chlorine coal current status and future prospects |
| topic | occurrence modes and geochemical characteristics of chlorine release dynamics during high-chlorine coal combustion chlorine-induced corrosion and synergistic effects pollution control technologies (mercury/dioxins) environmental–ecological impacts and atmospheric chemistry |
| url | https://www.mdpi.com/1996-1073/18/12/3011 |
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