STS304管表面“氧化+结焦”处理对碳氢燃料热解结焦的抑制作用  

Inhibition of Hydrocarbon Fuel Pyrolysis Coking by“Oxidation+Coking”Treatment on the Surface of STS304 Tube

作　　者：李浩文 杨子昕 张威 宋谦石[1,2] 汪小憨 Li Haowen;Yang Zixin;Zhang Wei;Song Qianshi;Wang Xiaohan(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Energy Science and Technology,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]中国科学院可再生能源重点实验室,广州510640 [3]中国科学院大学,北京100049 [4]中国科学技术大学能源科学与技术学院,合肥230026

出　　处：《燃烧科学与技术》2024年第1期53-60,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51976219).

摘　　要：采用氧化或结焦方式对STS304内表面进行预处理,得到反应管O-STS304、C-STS304、OC-STS304,将其与STS304和TA管开展SEM/AFM表面形貌、表面元素XPS和导热系数等参数测试.结焦引入碳层增加了STS304内表面的粗糙度以及导热热阻,但一定程度抑制了催化结焦,同时提高了管材耐温性.采用MCH热解结焦实验发现,氧化和结焦预处理对热解影响很小,结焦处理可以显著降低催化反应管的结焦速率,5种管材的结焦速率排序为STS304>O-STS304>OC-STS304>TA>C-STS304.因此,对镍基催化反应管进行结焦预处理可以有效抑制结焦.The inner surface of STS304 was pretreated by oxidation or coking to obtain reactors O-STS304,CSTS304 and OC-STS304,which were tested together with STS304 and TA(Titanium)tubes for surface morphology by SEM/AFM,surface element by XPS and thermal conductivity parameters.The introduction of carbon layer through coking increased both the roughness of STS304 tube inner surface and the thermal resistance,but inhibited the catalytic coking intensity to some extent.The temperature tolerance of the reaction tube was also improved.The coking rate of the five tubes was ranked as STS304>O-STS304>OC-STS304>TA>C-STS304.Therefore,the coking pretreatment of nickel-based catalytic reaction tubes can effectively inhibit surface coking.

关 键 词：碳氢燃料 热解结焦 流动反应器 表面结焦钝化 反应管材质 

分 类 号：TK11[动力工程及工程热物理—热能工程]