Abstract The modified Claus process is one of the major processes employed to convert hydrogen sulfide to elemental sulfur from acid gas. Kinetic models provide a better estimation of Claus reaction furnace effluents, however, kinetics of the coupled reactions are complex and depend upon the feed composition and conditions. Previous studies focused on fitting the kinetic parameters to better approximate the furnace effluents of the observed plants. In this work, a proposed kinetic model based on key global reactions is examined with different feed conditions and acid gas compositions without parameter fitting. Results of the proposed reduced model are compared with plant data, published data from lab-scale experiments, results of a detailed reaction mechanism and of a reduced kinetic model from the literature. Overall, a good agreement is found with each case for the prediction of the reaction furnace effluent temperature and compositions by the proposed model. The proposed model is computationally efficient for Computational Fluid Dynamics design, and optimization and control studies for Claus reaction furnaces.

中文翻译：

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不同进料条件下硫磺回收装置克劳斯反应炉模拟动力学模型评估

摘要 改良克劳斯法是将硫化氢从酸性气体中转化为元素硫的主要工艺之一。动力学模型提供了对克劳斯反应炉流出物的更好估计，但是，耦合反应的动力学很复杂，取决于进料成分和条件。以前的研究集中在拟合动力学参数以更好地近似观察到的工厂的炉子流出物。在这项工作中，在没有参数拟合的情况下，在不同的进料条件和酸性气体组成下检查了基于关键全局反应的拟议动力学模型。将提议的简化模型的结果与工厂数据、实验室规模实验的公开数据、详细反应机制的结果和文献中简化的动力学模型的结果进行比较。全面的，所提出的模型对反应炉流出物温度和成分的预测与每种情况都有很好的一致性。所提出的模型对于计算流体动力学设计以及克劳斯反应炉的优化和控制研究具有计算效率。