CAJ | 학술논문

油品中的活性硫对设备具有腐蚀作用，探究有氧条件下硫化铁的生成及自燃性影响因素，对预防硫化铁自燃事故的发生具有重要意义。实验以三氧化二铁为主要原料，在氧气浓度为21%的条件下，与硫化氢气体反应来制备硫化铁。考察了环境温度、硫化产物的存放时间和储热条件对硫化铁自燃性的影响。结果表明，有氧条件下硫化铁的生成过程是一个硫化和氧化同时进行的过程，试样温度上升幅度大，单质硫生成量高；环境温度越高，所生成的硫化铁氧化升温越明显；存放时间对硫化铁的自燃性有重要影响，在存放过程中单质硫与FeS反应生成自燃性更高的多硫化物；储热条件越好，越易造成热量的堆积，加剧硫化铁的氧化放热反应。
유품중적활성류대설비구유부식작용，탐구유양조건하류화철적생성급자연성영향인소，대예방류화철자연사고적발생구유중요의의。실험이삼양화이철위주요원료，재양기농도위21%적조건하，여류화경기체반응래제비류화철。고찰료배경온도、류화산물적존방시간화저열조건대류화철자연성적영향。결과표명，유양조건하류화철적생성과정시일개류화화양화동시진행적과정，시양온도상승폭도대，단질류생성량고；배경온도월고，소생성적류화철양화승온월명현；존방시간대류화철적자연성유중요영향，재존방과정중단질류여FeS반응생성자연성경고적다류화물；저열조건월호，월역조성열량적퇴적，가극류화철적양화방열반응。
The active sulfur in oil has a corrosive effect on the device,exploring the generation and influ-encing factors of spontaneous combustion of iron sulfide under the aerobic conditions has a great signifi-cance to prevent accidents caused by spontaneous combustion of iron sulfide. Experiment takes iron oxide as the main raw material to react with hydrogen sulfide gas under the condition that oxygen concentration is 21% to prepare the iron sulfide and investigates the effects of ambient temperature,storage time and storage conditions for curing hot products on spontaneous combustion of iron sulfide. The results show that the process of generating the iron sulfide under aerobic conditions is a process that oxidation and vulcani-zation taking place at the same time and when the sample temperature rising amplitude is bigger,genera-ting capacity of elemental sulfur will be higher;The higher the ambient temperature is,the more obvious the resulting iron sulfide oxidation temperature is rising;Storage time has considerable influences to spon-taneous combustion of iron sulfide and elemental sulfur reacts with FeS to form higher spontaneous com-bustion polysulfide during storage;The better thermal storage condition is,the more easily to lead to the accumulation of heat,which exacerbates the exothermic oxidation of iron sulfide.