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Numerical simulation and experimental research on oil sludge co-firing in a 330 MW pulverized-coal boiler at low load condition
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Haidan ZHANG1, 2, Fanzhi ZHANG3, Xianming FANG3, Zhen LIANG3, Guangxue ZHANG4
Thermal Power Generation | 2024, 53(3) : 153 - 160
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Thermal Power Generation | 2024, 53(3): 153-160
• Power generation technology forum •
Numerical simulation and experimental research on oil sludge co-firing in a 330 MW pulverized-coal boiler at low load condition
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Haidan ZHANG1, 2, Fanzhi ZHANG3, Xianming FANG3, Zhen LIANG3, Guangxue ZHANG4
Affiliations
  • 1.Zhejiang Energy R&D Institute Co., Ltd., Hangzhou 311121, China
  • 2.Zhejiang Key Laboratory of Energy Conservation & Pollutant Control Technology for Thermal Power, Hangzhou 311121, China
  • 3.Taizhou Power Plant of Zhejiang Zheneng Electric Power Co., Ltd., Taizhou 318016, China
  • 4.Institute of Energy Engineering, China Jiliang University, Hangzhou 310018, China
Published: 2024-03-25 doi: 10.19666/j.rlfd.202308130
Outline
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A method was proposed to solve the problem of oil sludge treatment environmentally by sending the pretreated oil sludge into a 330 MW pulverized coal boiler co-firing with coal. The combustion characteristics of the oil sludge were studied by thermogravimetric analysis, and it was proved to be easy to ignite with a high calorific value close to coal, which could improve the boiler’s low-load stable combustion ability. Numerical simulation results showed that the combustion center shifted downward slightly after the oil sludge was sent into the boiler, while the NOx content decreased. The experimental results proved that the minimum stable combustion load rate can be 20.00% by the benefit of oil sludge co-firing. The temperature at the coal-burner layer increased by 30~50 ℃ and the carbon content of the fly ash decreased from 4.79% to 3.80%. The fire detection analog signal of the coal burner was found to be more stable which validated the positive effect of the oil sludge co-firing at low load condition. The boiler efficiency increased by 0.23 percentage point which reduced the net coal consumption rate by 0.7 g/(kW·h). Moreover, about 3.7 t/h coal was saved at 120 MW load. The method was verified to have a significant energy-saving effect.

oil sludge  /  boiler  /  co-firing  /  low load stable combustion
Haidan ZHANG, Fanzhi ZHANG, Xianming FANG, Zhen LIANG, Guangxue ZHANG. Numerical simulation and experimental research on oil sludge co-firing in a 330 MW pulverized-coal boiler at low load condition[J]. Thermal Power Generation, 2024 , 53 (3) : 153 -160 . DOI: 10.19666/j.rlfd.202308130
Funding
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  • Scientific and Technological Projects of Zheneng Group(ZNKJ-2022-015)
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Year 2024 volume 53 Issue 3
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Article Info
doi: 10.19666/j.rlfd.202308130
  • Receive Date：2023-08-12
  • Online Date：2025-12-31
  • Published：2024-03-25
Article Data
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History
  • Received：2023-08-12
Funding
Scientific and Technological Projects of Zheneng Group(ZNKJ-2022-015)
Affiliations
    1.Zhejiang Energy R&D Institute Co., Ltd., Hangzhou 311121, China
    2.Zhejiang Key Laboratory of Energy Conservation & Pollutant Control Technology for Thermal Power, Hangzhou 311121, China
    3.Taizhou Power Plant of Zhejiang Zheneng Electric Power Co., Ltd., Taizhou 318016, China
    4.Institute of Energy Engineering, China Jiliang University, Hangzhou 310018, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202308130
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表12种不同金属材料的力学参数
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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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