Empirical and theoretical aspects of non-catalytic molten sulfur degassing as one of the vital actions in Claus Unit have been investigated in this article. A laboratory bubble column has been set up to study the hydrodynamic behavior of gas-liquid system. Values of gas holdup were also compared with predictions of some correlations in the case of application of porous spargers. The mathematical model of degassing was also developed considering reaction of H₂S with sulfur molecules in the molten sulfur and generation of H₂S_x species. The experimentally-measured parameters of gas holdup and bubble size were used in the mathematical model. Other parameters including Henry’s law constant of H₂S-liquid sulfur system and reaction rate constants were obtained from published formulas presented by Marriott and Ji, respectively. The obtained results were compared to the empirical data of non-catalytic degassing performed in the laboratory setup. Reasonable compatibility was observed between the model-derived and experimental results. The results showed a fast removal of dissolved H₂S within few minutes, followed by very slow removal of H₂S_x through its chemical conversion to H₂S and its purging by sweep gas. The novel gas holdup profile and images presented in this article show interesting features of hydrodynamic behavior of molten sulfur.

本文研究了非催化熔融硫脱气作为克劳斯装置中的重要作用之一的经验和理论方面。已经建立了实验室鼓泡塔以研究气-液系统的流体动力学行为。在使用多孔喷射器的情况下，还将气体滞留量的值与一些相关性的预测值进行了比较。还考虑了H ₂ S与熔融硫中硫分子的反应以及H ₂ S _x物种的产生，建立了脱气的数学模型。在数学模型中使用了实验测量的气体滞留率和气泡尺寸参数。其他参数包括H _2的亨利定律常数S-液硫系统和反应速率常数分别从Marriott和Ji提出的公式中获得。将获得的结果与实验室设置中进行的非催化脱气的经验数据进行比较。在模型导出的结果和实验结果之间观察到了合理的兼容性。结果表明，在几分钟之内即可快速除去溶解的H ₂ S，然后通过将H ₂ S _x化学转化为H ₂ S并通过吹扫气吹扫来非常缓慢地除去H ₂ S _x。本文介绍的新颖的气体滞留曲线和图像显示了熔融硫的水动力行为的有趣特征。