摘要
油品储罐中的H2S气体在没有O2存在的室温条件下能与储罐内壁铁的主要腐蚀产物Fe2O3发生化学反应生成铁的硫化物(以FeS为主)。铁的硫化物氧化放热是引起含硫油品储罐着火的主要原因。通过实验绘制出在不同起始氧气浓度下的Fe2O3的硫化产物氧化升温曲线和耗氧速度曲线,继而分析了氧气浓度对铁的硫化物自燃性的影响,氧气浓度越大,铁的硫化物自燃性越强。并且通过对耗氧速度的分析,可以了解铁的硫化物氧化反应速度的变化。
Iron sulphide is generated when iron oxide as a predominant corrosion product in oil storage tank reacts with hydrogen sulphide at room temperature without oxygen. Thermal oxidation of the iron sulphide is regarded as the main cause of tank fire. Experimental curves for temperature rise and oxygen consumption rate during oxidation with various initial oxygen concentrations were obtained and compared. The influence of oxygen on pyrophoricity of iron sulphide was analytically examined. The higher the oxygen concentration, the higher the pyrophoricity. Oxidation dynamics of the iron sulphide was deduced by means of oxygen consumption rate.
出处
《腐蚀与防护》
CAS
北大核心
2005年第12期512-514,526,共4页
Corrosion & Protection
基金
国家自然科学基金(20371024)
辽宁省自然科学基金(20022160)
中国石化公司资助项目(301036)
关键词
氧气浓度
硫化物
自燃性
耗氧速度
Oxygen concentratiom Sulfide
Spontaneous combustion nature
Rate of oxygen consumption
