文献类型：期刊文献

中文题名：SiO_2/S涂层与结焦抑制剂抗结焦性能的实验对比

英文题名：Experimental Comparative Study on Anti-Coking Properties of SiO_2/S Composite Coating and Coking Inhibitor

作者：王志远[1];徐宏[1];栾小建[1];周建新[1,2];陈明亚[1]

机构：[1]华东理工大学化学工程联合国家重点实验室机械与动力工程学院,上海200237;[2]中国石化扬子石化有限公司,江苏南京210048

年份：2011

卷号：27

期号：3

起止页码：441

中文期刊名：石油学报（石油加工）

外文期刊名：Acta Petrolei Sinica(Petroleum Processing Section)

收录：CSTPCD;;EI(收录号：20112814137629);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：上海市重点学科建设项目(B503)资助

语种：中文

中文关键词：退役炉管;结焦;涂层;结焦抑制剂

外文关键词：cracking tube after service; coking; coating; coking inhibitor

摘要：在退役炉管内表面制备了SiO2/S复合涂层,对涂层与结焦抑制剂的抗结焦性能进行了对比。采用扫描电子显微镜、X射线能谱分析了炉管内表面及截面的形貌和化学组成,表征了加入结焦抑制剂后的焦层形貌。结果表明,退役炉管内表面粗糙,呈刻蚀状形貌,并且分布着细小的孔洞及裂纹,丝状焦首先在这些部位成核与生长。提高复合涂层的涂覆效果与保持涂层的完整性可以有效地降低焦炭的沉积。结焦抑制剂由于其中含硫化合物与含磷化合物的协同作用,抗结焦性能优良。当加入结焦抑制剂质量分数为200μg/g时,结焦抑制率达到69.2%;而SiO2/S复合涂层的结焦抑制率达到65%,前者效果略优。
The SiO2/S composite coating was prepared on the inner surface of the cracking tube after service,and its anti-coking properties were compared with that of coking inhibitor containing sulfur-phosphorous compound.The morphologies of the inner surface and the distribution of component elements along the cross section of the used cracking tube,and also the morphologies of coke deposited on the inner surface of the tube with the inhibitor added,were investigated by means of SEM and EDS.The results showed that the inner surface of the cracking tube after service had a rough and etched morphology with small holes and cracks distributing on it,where filament coke was easy to nucleate and grow.Increasing the coverage and keeping the integrity of the SiO2/S composite coating was an effective way to reduce coke deposition.Because of the synergistic effects of contained sulfur compounds and phosphorous compounds on the coke formation,the coking inhibitor presented excellent anti-coking properties.The SiO2/S coating reduced the coke deposition by 65% compared with 69.2% for the coking inhibitor with 200 μg/g added,which presented a better anti-coking properties.