硫化铁氧化及聚热过程影响因素  

Oxidation and Effect Factors for Heat Gathering of Iron Sulfide

作　　者：赵雪娥[1] 蒋军成[2] 魏新利[1] 

机构地区：[1]郑州大学化学工程学院,河南郑州450001 [2]南京工业大学安全工程研究所,江苏南京210009

出　　处：《石油化工高等学校学报》2009年第2期9-11,共3页Journal of Petrochemical Universities

基　　金：国家自然科学基金重点项目资助(No.50774048)

摘　　要：采用自然环境中氧化试验装置,研究了硫化铁的自然氧化进程,根据硫化铁在自然环境中氧化进程的特征,提出了其氧化过程可以分为表层自热期、潜伏期以及加速氧化期3个阶段。热量积聚在硫化铁自燃进程中起着关键性的作用。此外,又研究了原油、水分以及硫单质等因素对热量积聚过程的影响。结果表明,原油对热量积聚具有双重影响;水分对于自燃具有抑制作用;硫磺对硫化铁自燃初期影响比较小,后期主要起到外部热源的作用。Oxidation process of iron sulfides was observed by installation of oxidation experiment. Oxidation process of iron sulfide can be divided into three stages： surface layer self--heating period, incubative period and accelerative oxidation period. Heat gathering was the key factors for iron sulfide self--ignite. Effects of oil,water content and sulfur on heat gathering were explored using oxidation experiment installation. The results show that oil has complicate effect on self--ignite of iron sulfide. Water content can prevent iron sulfide from oxidizing. Sulfur has a little effect on initial stages of self--ignite, while in the final stage it can be as external heat source.

关 键 词：硫化铁 氧化 自燃 热量积聚 影响因素 

分 类 号：TG174[金属学及工艺—金属表面处理] TG172.33[金属学及工艺—金属学]