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Scheme design and control strategy of a novel coal pulverizing system based on addition of small pulverized coal silos
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Sibian DING, Qinxiong TAN, Hongyu DING, Tao YANG
Thermal Power Generation | 2024, 53(11) : 79 - 88
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Thermal Power Generation | 2024, 53(11): 79-88
• Thermal energy science research •
Scheme design and control strategy of a novel coal pulverizing system based on addition of small pulverized coal silos
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Sibian DING, Qinxiong TAN, Hongyu DING, Tao YANG
Affiliations
  • School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Published: 2024-11-25 doi: 10.19666/j.rlfd.202404090
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To solve the problems of slow milling response and poor control precision occurred in direct-blow pulverizing systems, a novel pulverizing system adding small pulverized coal silos is designed, and the corresponding air-powder control strategy is proposed. Moreover, based on the dynamic simulation model of an ultra-supercritical unit, the operation and control strategy of the novel pulverizing system is simulated and validated. The results demonstrate that, the proposed control strategy enables precise and rapid response of air-powder parameters. In the load response simulation tests conducted within the load variation range of 75%~85% of rated load, after the small pulverized coal silos were put into operation, the load response rate of the unit’s model can reach 5%/min and recover stability faster. Therefore, the novel pulverizing system and its operational control strategy significantly enhance the unit flexibility. The research provides a viable technical approach and guidance for improving the flexibility of coal-fired boilers.

pulverizing system  /  small pulverized coal silos  /  flexibility  /  control strategy
Sibian DING, Qinxiong TAN, Hongyu DING, Tao YANG. Scheme design and control strategy of a novel coal pulverizing system based on addition of small pulverized coal silos[J]. Thermal Power Generation, 2024 , 53 (11) : 79 -88 . DOI: 10.19666/j.rlfd.202404090
Funding
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  • National Key Research and Development Program(2022YFB4100400)
Appendix
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Year 2024 volume 53 Issue 11
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149
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Article Info
doi: 10.19666/j.rlfd.202404090
  • Receive Date：2024-04-30
  • Online Date：2026-03-05
  • Published：2024-11-25
Article Data
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History
  • Received：2024-04-30
Funding
National Key Research and Development Program(2022YFB4100400)
Affiliations
    School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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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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