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Impact of deep hydrogenation on jet fuel oxidation and deposition

机译：深氢化对喷射燃料氧化和沉积的影响

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摘要

Thermal oxidative stability is a key issue for jet fuel serving as a coolant of high-performance aircraft. This study investigated the effects of the hydrogenation degree on the oxidation and deposition of jet fuel (RP-3). Fuels with different hydrogenation degrees were achieved by a commercial catalyst, with the aromatic content reduced from 12.6 wt% to 0.4 wt%, resulting in a slight density decrease and a slight increase of the net heating value. Meanwhile, the total sulfur content of hydrogenated fuel was lowered to below 1 ppm, and the naturally occurring phenols were completely removed. The initial oxidation reactivity and deposition tendency of hydrogenated fuels were investigated by pressure differential scanning calorimetry and jet fuel thermal oxidation tester, respectively. For the initial oxidation, both the oxidation OT (onset temperature) and IP (induction period) of jet fuel decrease with increasing hydrogenation degree and show good linear correlations with the aromatic content. For thermal deposition, pristine RP-3 cannot pass the JFTOT test (355 degrees C for 5 h), while all hydrogenated RP-3-t can pass 355 degrees C JFTOT test, owing to the almost total removal of inherent heteroatomic species (sulfurs and phenols) by hydrogenation. This work confirms that deep hydrogenation is a promising approach to improve the thermal oxidative stability of jet fuel (fewer deposits) for the practical applications.
机译：热氧化稳定性是用作高性能飞机冷却剂的喷射燃料的关键问题。本研究研究了氢化程度对喷射燃料（RP-3）的氧化和沉积的影响。通过商业催化剂实现具有不同氢化度的燃料，芳族含量从12.6wt％降至0.4wt％，导致略微的密度降低，净加热值略有增加。同时，将氢化燃料的总硫含量降至1ppm以下，并完全除去天然存在的酚。通过压差扫描量热法和喷射燃料热氧化测试仪研究了初始氧化反应性和氢化燃料的沉积趋势。对于初始氧化，氧化OT（起始温度）和IP（诱导期）随着氢化程度的增加而降低，并且与芳族含量显示出良好的线性相关性。对于热沉积，原始RP-3不能通过JFTOT测试（355℃，5小时），而所有氢化的RP-3-T都可以通过355摄氏度，而由于几乎全部除去固有的杂原子物种（Sulfurs和苯酚）通过氢化。这项工作证实，深氢化是一种有望的方法，可以提高喷射燃料（较少沉积物）的热氧化稳定性。

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  • 来源
    《Fuel》 |2020年第15期|116843.1-116843.9|共9页
  • 作者

    Jia Tinghao; Gong Si; Pan Lun; Deng Chuan; Zou Ji-Jun; Zhang Xiangwen;

  • 作者单位

    Tianjin Univ Sch Chem Engn & Technol Minist Educ Key Lab Green Chem Technol Tianjin 300072 Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn & Technol Minist Educ Key Lab Green Chem Technol Tianjin 300072 Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn & Technol Minist Educ Key Lab Green Chem Technol Tianjin 300072 Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300072 Peoples R China;

    Civil Aviat Adm China Res Inst 2 Chengdu 610200 Sichuan Peoples R China;

    Tianjin Univ Sch Chem Engn & Technol Minist Educ Key Lab Green Chem Technol Tianjin 300072 Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Chem Engn & Technol Minist Educ Key Lab Green Chem Technol Tianjin 300072 Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjin Tianjin 300072 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Jet fuel; Deep hydrogenation; Aromatic content; Thermal oxidative stability; Heteroatomic species;

    机译：喷射燃料;深氢化;芳族含量;热氧化稳定性;杂原种;

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