摘要
含硫原油储罐中的活性硫(硫化氢、硫、硫醇)与罐内壁腐蚀产物铁的氧化反应生成不同形式的硫铁化合物(FeS、Fe2S3、FeS2、Fe3S4)。这些化合物活性很高,与空气中的氧气反应放出大量的热,使储罐内温度升高,导致燃点低的物质发生自燃,从而引起火灾事故。在不同环境温度下模拟了含硫油品储罐铁的硫化物的生成,并在同一氧气流速下考察了硫铁化合物生成时环境温度对其自然氧化倾向性的影响,同时考察了铁锈水分含量对其硫化产物自然氧化倾向性的影响。结果表明,制备时环境温度不同、硫化产物的主要成分不同;制备时环境温度越高、铁锈水分含量越高,硫铁化合物的自然氧化倾向性就越高。
Hydrogen sulfide, often present in sulfur-bearing crude tankers, can react with rust corrosion product to form various sulfides including ferrous sulfide, ironic sulfide and ferrous disulfide . The tendency for these compounds to react with oxygen in air can form potentially explosive mixtures. The preparative reaction of ironic sulfide was generated in different ambient temperature, the tests of natural oxidation of sulfides were carried. The study was done to analyze the effect of moisture on spontaneous combustion of iron sulfides, the results showed that the higher temperature or the greater mositure ,the higher self-combustion.
出处
《化工科技》
CAS
2007年第5期6-9,共4页
Science & Technology in Chemical Industry
基金
国家自然科学基金项目(20371024)
关键词
硫铁化合物
环境温度
自燃
油罐
Ironic sulfide
Ambient temperature
Self-ignition
Oil tank
