克劳斯燃烧炉补酸气工艺优化

Optimization of acid filling process in Claus furnace

为了有效利用克劳斯燃烧炉内体积并提高燃烧炉中硫单质的产率,提出利用花墙结构定制燃烧炉内流场,并优化补酸气工艺,提高燃烧炉的效率。花墙结构与扼流圈结构相比,加强了气体的混合效果,延长了气体的停留时间,缩短了炉内反应的有效反应长度。定义补充酸气入口进料量与入口酸气的进料量的比值为优化变量研究补酸气工艺,得到比值为0.3时为最优的酸气补充方式。相对于扼流圈结构,出口SO_(2)的质量分数下降了50%,酸气处理量增加了30%,出口处硫单质的产率增加了8.9%。结果表明,通过花墙定制流场和优化补酸气工艺,可以提高燃烧炉的空间利用率并提高炉内硫单质的产率。

It was proposed to improve the flow field in the Claus furnace with the checker wall structure and optimize the acid gas supplement process to increase the combustion efficiency and yield of sulfur in the furnace.Compared with the choke structure,the checker wall structure could enhance the gas mixing effect,prolong the gas residence time and shorten the effective reaction length in the furnace.The ratio of the feed amount of supplementary acid gas to the inlet sour gas was defined as an optimized variable to study the process of supplementary acid gas,and the optimal acid gas supplement method was obtained when the ratio was 0.3.Compared with the choke structure,the SO_(2) mass fraction at the outlet decreased by 50%,the acid gas treatment capacity increased by 30%,and the yield of sulfur element at the outlet increased by 8.9%.The results show that space utilization rate of the furnace and the yield of sulfur in the furnace could be increased by improving the flow field of furnace with the checker wall and optimizing the acid gas replenishment process.