The microstructure and composition of coke from different parts of the FCCU disengager were analyzed by using both scanning-electron microscope(SEM) and X-ray analysis(EDS) methods.

• 采用扫描电镜(SEM)和X射线能谱分析仪对催化裂化装置(FCCU)沉降器内结焦物的微观组织结构和成分进行了分析,将结焦物划分为软焦和硬焦。