CAJ | 학술논문

主要针对某电厂采用尿素热解制氨工艺中出现的热解炉堵塞结垢的原因进行分析，并提出了解决方法。通过对热解室内沉积物成分进行分析，可以推断热解室下部锥管段堵塞是由尿素未完全分解产生中间聚合物造成的。为了防止尿素在热解室内生成中间聚合物造成堵塞，需要适当提高热解室顶部引入的高温热空气温度，使热解室内各部位温度保持在360℃以上，尤其是喷嘴和热解室下部出口段温度较低的部位。研究可为其它电厂脱硝系统运行提供参考。
주요침대모전엄채용뇨소열해제안공예중출현적열해로도새결구적원인진행분석，병제출료해결방법。통과대열해실내침적물성분진행분석，가이추단열해실하부추관단도새시유뇨소미완전분해산생중간취합물조성적。위료방지뇨소재열해실내생성중간취합물조성도새，수요괄당제고열해실정부인입적고온열공기온도，사열해실내각부위온도보지재360℃이상，우기시분취화열해실하부출구단온도교저적부위。연구가위기타전엄탈초계통운행제공삼고。
The aim of this work is to analyze the causes of pyrolysis furnaces scaling and blocking in urea pyrolysis process for ammonia preparation,and discuss the effective measures to solve this problem.Through analysis of the pyrolysis chamber deposits,it can be inferred that blockage of the lower cone pipe of pyrolysis chamber is due to incomplete decomposition of urea intermediate polymer.It is necessary to raise the temperature of hot air in the top pyrolysis chamber to prevent the urea generating intermediate polymer.So the temperature of each part in pyrolysis chamber should be kept at above 360 ℃,especially the nozzles and the outlet of pyrolysis chamber where temperature is lower.It provides a good reference and precaution for the denitrafication system operation in other power plants.