石油与天然气化工2025，Vol.54Issue(3)：8-15,8.DOI:10.3969/j.issn.1007-3426.2025.03.002
络合铁脱硫吸收塔中硫磺颗粒沉降特性数值模拟
Numerical simulation of sedimentation characteristics of sulfur particles in chelated iron desulfurization absorber
摘要
Abstract
Objective The aim is to study the influence of the flow field change at the bottom of the reactor in the gas-liquid-solid three-phase complex system on the sedimentation characteristics of sulfur particles.Method Based on computational fluid dynamics,the k-ω-SST turbulence model(liquid phase)and discrete phase model(DPM)were adopted to conduct simulation research on the generation distribution of sulfur particles and the particle motion trajectory in the absorber of the chelated iron desulfurization unit.Result In the case of symmetrical distribution of the gas distributor,due to the influence of static pressure distribution,the sulfur generation amount was not uniformly distributed.The duckbill,which was the farthest from the main pipeline of the feed gas inlet and the closest to the wall,had the largest gas flow rate and sulfur output.On the other hand,as the outlet flow rate of rich liquid from the absorber increased,the generated sulfur particles shifted towards the axis during the downward sedimentation process.When the outlet flow rate was less than 0.90 m/s,the deposition rate and deposition area of sulfur on the conical surface showed a linear downward trend with the increase of the rich liquid outlet flow rate.When the outlet flow rate was greater than 0.90 m/s,the downward trend of the deposition rate and deposition area slowed down.Conclusion The outlet flow rate should be controlled in the range of 0.90-1.10 m/s,and the internal circulation process of the rich liquid at the bottom of the absorber can effectively prevent the deposition and blockage of sulfur particles.关键词
络合铁法/脱硫/硫磺颗粒/沉降特性/富液内循环/含硫化氢气体Key words
chelated iron method/desulfurization/sulfur particles/sedimentation characteristic/rich-liquid internal circulation/H2S-containing gas引用本文复制引用
高峰,张春阳,贺云豪,刘其松,宋彬,来兴宇,兰启奎..络合铁脱硫吸收塔中硫磺颗粒沉降特性数值模拟[J].石油与天然气化工,2025,54(3):8-15,8.基金项目
中国石油天然气集团有限公司科研项目"复杂碳酸盐岩气藏效益上产与提高采收率技术研究"(2023ZZ16-03) （2023ZZ16-03）
中国石油西南油气田公司科研项目"络合铁脱硫溶剂传质性能提升与质量监控技术研究"(2024D106-03-02) （2024D106-03-02）
