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Study on the effect of calcium oxide addition on generation characteristics of tar in sludge pyrolysis system coupled with molten salt energy storage
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Shuai LIU1, Zhuo CHEN1, Wenjing ZHANG1, Yanbo LONG1, Yuanjun ZUO1, Chengyang CAO2, Hongyun HU2
Thermal Power Generation | 2023, 52(2) : 119 - 125
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Thermal Power Generation | 2023, 52(2): 119-125
• Application of thermal energy storage technology •
Study on the effect of calcium oxide addition on generation characteristics of tar in sludge pyrolysis system coupled with molten salt energy storage
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Shuai LIU1, Zhuo CHEN1, Wenjing ZHANG1, Yanbo LONG1, Yuanjun ZUO1, Chengyang CAO2, Hongyun HU2
Affiliations
  • 1.Hunan Province Key Laboratory of Efficient & Clean Thermal Power Generation Technologies, State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China
  • 2.State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Published: 2023-02-25 doi: 10.19666/j.rlfd.202210253
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A sludge pyrolysis system coupled with molten salt storage is an emerging novel thermal treatment technique for sludge disposal, which can simultaneously realize reduction and tar recovery by constructing rapid and homogeneous pyrolysis conditions. The effects of heating rate and calcium oxide (CaO) addition on the production characteristics of tar during sludge pyrolysis coupled with molten salt storage system were investigated via a high-precision optical wide heating rate pyrolysis apparatus. The results show that, the heating rate affected the tar yield at low pyrolysis temperatures. The tar yield increased by 14% at 350 ℃ when the heating rate increased from 60 ℃/min to 6 000 ℃/min. Meanwhile, the CaO addition could result in a sharp decrease in tar yield, an 39%~43% decrease could be observed with 10% CaO addition. Also, the CaO addition significantly affected the relative content of the compounds in tar, which was attributed to the fact that CaO could act as a catalyst and heat transfer retardant. The results are helpful to the pyrolysis condition regulation and high value-added tar obtain for the sludge pyrolysis system coupled with molten salt storage.

sludge  /  molten salt energy storage  /  pyrolysis  /  tar  /  calcium oxide
Shuai LIU, Zhuo CHEN, Wenjing ZHANG, Yanbo LONG, Yuanjun ZUO, Chengyang CAO, Hongyun HU. Study on the effect of calcium oxide addition on generation characteristics of tar in sludge pyrolysis system coupled with molten salt energy storage[J]. Thermal Power Generation, 2023 , 52 (2) : 119 -125 . DOI: 10.19666/j.rlfd.202210253
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  • Youth Fund of Hunan Natural Science Foundation(2021JJ40008)
Appendix
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Year 2023 volume 52 Issue 2
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Article Info
doi: 10.19666/j.rlfd.202210253
  • Receive Date：2022-10-14
  • Online Date：2026-01-23
  • Published：2023-02-25
Article Data
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History
  • Received：2022-10-14
Funding
Youth Fund of Hunan Natural Science Foundation(2021JJ40008)
Affiliations
    1.Hunan Province Key Laboratory of Efficient & Clean Thermal Power Generation Technologies, State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China
    2.State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202210253
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表12种不同金属材料的力学参数
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Number of
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Number of
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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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