Abstract Microwave-assisted catalytic pyrolysis of ship oil sludge is a promising method of recovering oil and gas for further energy replenishment on board. In this study, experiments on catalytic pyrolysis of ship oil sludge with the presence of 10 inexpensive metal additives under microwave irradiation were carried out. The introduction of all metal catalysts enhanced the temperature rising rate of oil sludge. The catalysts promoted the cracking of organic components following the orders of Fe2(SO4)3 > CaO ≈ CaCO3 > NiO > CaSO4 ≈ γ-Al2O3 > CaCl2 ≈ TiO2 > CuSO4 ≈ NiCl2 in terms of total yield of pyrolysis oil and gas. Ca-based catalysts exhibited a better performance on accelerating the formation of alkanes and consequently elevated the heating values of pyrolysis oil. The addition of Fe2(SO4)3, γ-Al2O3 and NiO only gave rise to a mild improvement of oil quality. CaO addition remarkably increased the proportion of H2 and the molar ratio of H2/CO in syngas. In general, CaO was the most beneficial for conversion of ship oil sludge into fuel oil and gas with the characteristic of high heating values. The obtained results provide the references for development of microwave-assisted catalytic pyrolysis of ship oil sludge while sailing.

中文翻译：

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船舶油泥微波辅助热解廉价高效催化剂的筛选

摘要 船舶油泥微波辅助催化热解是一种有前景的油气回收方法，进一步补充船上能量。在这项研究中，在微波辐照下，在 10 种廉价金属添加剂的存在下，对船舶油泥进行催化热解实验。全金属催化剂的引入提高了油泥的升温速度。就热解油气总产率而言，催化剂促进有机组分裂解的顺序为 Fe2(SO4)3 > CaO ≈ CaCO3 > NiO > CaSO4 ≈ γ-Al2O3 > CaCl2 ≈ TiO2 > CuSO4 ≈ NiCl2。Ca基催化剂在加速烷烃形成方面表现出更好的性能，从而提高了热解油的热值。Fe2(SO4)3的加入，γ-Al2O3 和 NiO 仅对油品质量有轻微改善。CaO的加入显着提高了合成气中H2的比例和H2/CO的摩尔比。总的来说，CaO最有利于将船舶油泥转化为具有高热值特性的燃油和燃气。研究结果为船舶航行中油泥微波辅助催化热解技术的开发提供了参考。