CAJ | 학술논문

合成氨生产中多级压缩级间换热器的结焦是一个普遍存在且急需解决的共性问题。以贵州开磷集团公司合成氨作为研究对象，对结焦现象和结焦机理进行了分析研究。通过对级间换热器中的焦垢及退役结焦换热管进行了 XRD、SEM、IR 以及金相学表征分析，发现原料气杂质硫化氢是影响结焦的主要因素，结焦机理主要以金属催化结焦和硫化氢腐蚀生焦占主导地位，同时还伴有腐蚀和渗碳现象。
합성안생산중다급압축급간환열기적결초시일개보편존재차급수해결적공성문제。이귀주개린집단공사합성안작위연구대상，대결초현상화결초궤리진행료분석연구。통과대급간환열기중적초구급퇴역결초환열관진행료 XRD、SEM、IR 이급금상학표정분석，발현원료기잡질류화경시영향결초적주요인소，결초궤리주요이금속최화결초화류화경부식생초점주도지위，동시환반유부식화삼탄현상。
In the production of synthetic ammonia, the coking of interstage heat exchangers of the multistage compressor is a widespread and common problem needed to resolve. In this paper, taking synthetic ammonia unit in Guizhou Kailin Group Company as a research object, the phenomenon and mechanism of the coking were analyzed and researched. Through XRD, SEM, IR and characterization metallography analysis of the coke and retired coking heat exchange tube, it’s found that the hydrogen sulfide in the feed gas is the main factor affecting the coking, metal catalytic coking and hydrogen sulfide corrosion coking play a dominant role in coking mechanism, in the meantime, the coking process is accompanied by corrosion and carburizing phenomenon.