Experimental Studies on Diesel Deterioration: Accelerated Oxidation in a Reaction Vessel and Thermogravimetric Analysis
Nan Li,
Mingchang Wang,
Pengpeng Li,
Shuping Che,
Xingyu Liang,
Yinhui Che,
Jia Yan and
Yongdi He ()
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Nan Li: Suzhou Nuclear Power Research Institute Co., Ltd., Shenzhen 518026, China
Mingchang Wang: Suzhou Nuclear Power Research Institute Co., Ltd., Shenzhen 518026, China
Pengpeng Li: Suzhou Nuclear Power Research Institute Co., Ltd., Shenzhen 518026, China
Shuping Che: Suzhou Nuclear Power Research Institute Co., Ltd., Shenzhen 518026, China
Xingyu Liang: State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
Yinhui Che: Suzhou Nuclear Power Research Institute Co., Ltd., Shenzhen 518026, China
Jia Yan: State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
Yongdi He: State Key Laboratory of Engines, Tianjin University, Tianjin 300350, China
Energies, 2025, vol. 18, issue 20, 1-18
Abstract:
Accelerated oxidation experiments on Chinese 0# diesel fuel were performed with a self-designed aging reactor system. Five experimental conditions covering pressures ranging from atmospheric pressure to 0.8 MPa, temperatures ranging from room temperature (25 °C) to 80 °C, and their synergistic effects were adopted to simulate the long-term oxidation of diesel fuel. The extent of deterioration was evaluated based on the measurement of three key indicators, i.e., oxidation stability, wear scar diameter, and viscosity. Thermogravimetric analysis (TGA) tests were performed, and the measured thermogravimetric (TG) curves and derivative thermogravimetric (DTG) curves were used to evaluate the effects of reactor material, heating rate, bath gas, and reactive gas on the deterioration and vaporization processes of diesel fuel. Based on a comparison of the deterioration indicators of diesel fuel collected from the accelerated oxidation experiments and oil depots serving actual operating emergency diesel generators (EDGs), a rapid assessment method of real-time diesel deterioration was explored. Based on the experimental observations, the affecting mechanisms of the increases in temperature and oxygen partial pressure were discussed. Two test methods of accelerated oxidation, with the respective conditions of 0.8 MPa/80 °C and atmospheric pressure/80 °C, were proposed, which could effectively compress the time needed for long-term storage simulations (e.g., 200 h lab aging equals three years of actual operation). The optional temperature and pressure windows for acceleration oxidation were confirmed (40–80 °C/0.3–0.8 MPa). These results are valuable for the further understanding of the processes of deterioration and vaporization of diesel fuel.
Keywords: diesel deterioration; accelerated oxidation; thermogravimetric analysis; emergency diesel generator; oxidation stability; wear scar diameter; storage stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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