络合铁法脱H2S技术研究进展  

Research progress in technologies for removal of H_2S with iron chelate solutions

作　　者：罗莹[1] 朱振峰[1] 刘有智[1] 

机构地区：[1]中北大学山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《天然气化工—C1化学与化工》2014年第1期88-94,共7页Natural Gas Chemical Industry

基　　金：国家自然科学基金项目(21376229);山西省科学技术发展计划(工业部分)(20130321035-02);山西省研究生创新项目(20130520)

摘　　要：分析了络合铁法脱除H2S机理和pH、羟基化程度、溶解氧浓度等因素对脱硫过程的影响;总结了络合铁脱硫液中可溶性铁盐、配体、自由基清除剂、硫颗粒改性剂、缓蚀剂等配方成分的作用;介绍了目前国内外主要的络合铁脱硫工艺LO-CAT工艺、SulFerox工艺、Sulfint工艺、DDS工艺、改良络合铁法脱硫工艺,并作了简要评价;指出络合铁法脱H2S技术存在的主要难题是配体降解、副盐累积、Fe2+再生缓慢、硫堵。开发高硫容脱硫剂配方、高传质效率脱硫设备、优化流程及装置配置是络合铁法脱H2S技术未来发展的方向。The research progresses in the desulphurization mechanism of iron chelates, solution compositions and some factors affecting the desulfurization process such as pH, hydroxylation degree of iron chelates and dissolved oxygen concentration were presented. Several representative processes were also introduced. The existed problems in this process were the degradation of ligands, the accumulation of inert salts, the low rate of Fe2＋ regeneration and the sulfur blocking. To develop high sulfur capacity formula of iron chelate solutions and high efficient mass transfer equipments and optimize the process and device configuration would be the future development direction of this technology.

关 键 词：硫化氢 脱硫 络合铁 脱硫液成分 脱硫工艺 

分 类 号：TQ028.25[化学工程]