Petrochemical refineries worldwide experience a common problem: the accumulation of fuel oil blended stock (FOBS). FOBS are any leftover oil blended with other similar unfinished oils, to make a final refined product. FOBS are not only of no value, but also it triggers storage and environmental concern. One way to overcome this is to upgrade FOBS into higher value-added product through oxidative cracking process. In this study, FOBS potential as a feed was investigated to produce hydrogen by utilizing n-eicosane as the model compound. A thermodynamic equilibrium analysis based on the total Gibbs energy minimization method was performed for n-eicosane cracking to hydrogen in the presence of oxygen. The effects of different reactants ratio, temperature and pressure, were studied. Equilibrium product compositions of n-eicosane at temperatures of 573 K–1273 K, pressure of 0−20 bar, n-eicosane/oxygen ratios (EO) (0.5:0.5, 0.7:0.3, 0.8:0.2, 0.9:0.1, 0.95:0.05) were analysed. It was discovered that the main product of oxidative cracking is hydrogen and methane. Furthermore, the results showed that the optimum reactant ratio for hydrogen and methane production is EO ratio 0.95:0.05. A network of reaction mechanisms has been postulated to explain the overall complex reactions happening in the process.

世界各地的石化炼油厂都面临一个共同的问题：燃料油混合库存 (FOBS) 的积累。FOBS 是任何剩余的油与其他类似的未成品油混合以制成最终精炼产品。FOBS 不仅没有价值，而且会引发存储和环境问题。克服这一问题的一种方法是通过氧化裂解工艺将 FOBS 升级为更高附加值的产品。在这项研究中，通过使用正二十烷作为模型化合物，研究了作为原料的 FOBS 生产氢气的潜力。对n进行了基于总吉布斯能量最小化方法的热力学平衡分析-二十烷在氧气存在下裂解为氢气。研究了不同反应物比例、温度和压力的影响。在 573 K–1273 K 的温度、0-20 巴的压力、正二十烷/氧气比 (EO)（0.5: 0.5、0.7:0.3、0.8:0.2、0.9:0.1、0.95）下，正二十烷的平衡产物组成:0.05) 进行了分析。发现氧化裂解的主要产物是氢气和甲烷。此外，结果表明氢气和甲烷生产的最佳反应物比为EO比0.95:0.05。已经假设了一个反应机制网络来解释过程中发生的整体复杂反应。