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Impact analysis and optimization of novel Arundo donax L.-coal co-firing on the operation of coal-fired power units
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Zhehao SHI1, Hui XU1, Kai WANG1, Ming LIU2, Quan TANG3, Erwei LENG3
Thermal Power Generation | 2026, 55(3) : 82 - 91
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Thermal Power Generation | 2026, 55(3): 82-91
• Biomass co-firing technology •
Impact analysis and optimization of novel Arundo donax L.-coal co-firing on the operation of coal-fired power units
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Zhehao SHI1, Hui XU1, Kai WANG1, Ming LIU2, Quan TANG3, Erwei LENG3
Affiliations
  • 1.Shanghai Shangdian Caojing Power Generation Co., Ltd, Shanghai 201507, China
  • 2.Shanghai Power Generation Equipment Complete Design and Research Institute Co., Ltd, Shanghai 200240, China
  • 3.College of Mechanical and Transportation Engineering, Hunan University, Changsha 410082, China
Published: 2026-03-25 doi: 10.19666/j.rlfd.202504050
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Traditional biomass resources are rarely adopted by coal-fired power plants due to their seasonal availability and regional dispersion. A novel Arundo donax L. variety, characterized by high yield and robust adaptability to marginal lands such as tidal flats and coastal wetlands, offers a viable solution to these challenges. In this study, based on a 2×1 000 MW ultra-supercritical pressure once-through boiler, co-firing experiments of this novel Arundo donax L. were carried out, and its effects on thermal system, powder making system, and combustion characteristics of thermal power units were analyzed. The results show that the thermal power plant unit operation is stable after adding 15% Arundo donax L. particles. However, the stone coal discharge increases, the coal mill current is elevated by about 5%~10%, the maximum elevation of the coal mill inlet and outlet differential pressure is elevated by 10%~15%, the combustion intensity in the furnace decreases slightly. The low grindability index of Arundo donax L. is the key factor affecting the operation of the unit, and the study concludes that the torrefaction interval of about 250~300 ℃ is the best interval to improve the grindability index of Arundo donax L.

Arundo donax L.  /  direct co-firing  /  milling systems  /  Hardgrove grindability index  /  torrefaction
Zhehao SHI, Hui XU, Kai WANG, Ming LIU, Quan TANG, Erwei LENG. Impact analysis and optimization of novel Arundo donax L.-coal co-firing on the operation of coal-fired power units[J]. Thermal Power Generation, 2026 , 55 (3) : 82 -91 . DOI: 10.19666/j.rlfd.202504050
Funding
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  • National Natural Science Foundation of China(52476194)
Appendix
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Year 2026 volume 55 Issue 3
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Article Info
doi: 10.19666/j.rlfd.202504050
  • Receive Date：2025-04-14
  • Online Date：2026-08-14
  • Published：2026-03-25
Article Data
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History
  • Received：2025-04-14
  • Revised：2025-04-23
  • Accepted：2025-04-25
Funding
National Natural Science Foundation of China(52476194)
Affiliations
    1.Shanghai Shangdian Caojing Power Generation Co., Ltd, Shanghai 201507, China
    2.Shanghai Power Generation Equipment Complete Design and Research Institute Co., Ltd, Shanghai 200240, China
    3.College of Mechanical and Transportation Engineering, Hunan University, Changsha 410082, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202504050
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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