Abstract Storage period is an important storage-stability index of endothermic hydrocarbon fuels. In this work, the accelerated oxidation method was used to predict the storage period of fuels at room temperature. The amount limit of hydroperoxide number (8 ppm) is the criterion for judging the fuel deterioration. Therefore, the relationship between heating time corresponding with 8 ppm of hydroperoxide number vs. temperature was established, predicting that the lab-made No. 1 endothermic hydrocarbon fuel (EHF-1, with 25 ppm butylated hydroxytoluene (BHT)) can be stored up to 18.8 years under sealed storage at 20 °C. During storage, the BHT amount will decrease gradually with that of hydroperoxide number increased, and 8 ppm of hydroperoxide number is corresponding to the residual 10.6 ppm of BHT, which can also be used to investigate storage period of EHF-1. During storage, metals often exposed to fuels can affect the storage stability of fuels to varying degrees, hence metal compatibility is an important basis for the selection of metal materials for fuel facilities. Metal compatibility with EHF-1 was tested in terms of corrosion degree of metals, the amount of metallic dissolution, hydroperoxide number, total acid number, etc. The tested metals can promote the oxidation of EHF-1, and the order of metals to accelerate oxidation of EHF-l is red copper > DT4 iron > 321 stainless steel > 5052 aluminum alloys.

中文翻译：

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吸热碳氢燃料的储存期预测和金属相容性

摘要 储存期是吸热型碳氢燃料的重要储存稳定性指标。在这项工作中，加速氧化法被用来预测燃料在室温下的储存期。氢过氧化物值的量限制（8 ppm）是判断燃料劣化的标准。因此，建立了对应于 8 ppm 氢过氧化物数的加热时间与温度之间的关系，预测实验室制造的 1 号吸热碳氢燃料（EHF-1，含 25 ppm 丁基化羟基甲苯 (BHT)）可以储存起来在 20°C 下密封储存至 18.8 年。在储存过程中，随着氢过氧化物值的增加，BHT的量会逐渐减少，8ppm的氢过氧化物值对应于残留的10.6ppm的BHT，也可用于研究 EHF-1 的储存期。在储存过程中，经常接触燃料的金属会不同程度地影响燃料的储存稳定性，因此金属相容性是燃料设施金属材料选择的重要依据。从金属的腐蚀程度、金属溶解量、氢过氧化物值、总酸值等方面测试与EHF-1的金属相容性。被测金属对EHF-1的氧化有促进作用，金属的顺序加快EHF-l氧化为紫铜>DT4铁>321不锈钢>5052铝合金。