铁沉积对劣质重油裂化接触剂性能的影响  

EFFECT OF IRON DEPOSITION ON RESIDUE CRACKING PERFORMANCE OF CONTACT CARRIER

作　　者：朱元宝[1] 张书红[1] 王子军[1] 汪燮卿[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2014年第1期6-10,共5页Petroleum Processing and Petrochemicals

基　　金：国家重点基础研究发展计划(973)项目(2012CB224801);国家科技支撑计划项目(2012BAE05B05)

摘　　要：选用劣质重油裂化接触剂,采用BET,NH3-TPD,SEM-EDX等手段对不同铁含量的重油裂化接触剂进行表征,利用轻油微反装置测定不同铁污染量接触剂的微反活性,利用固定流化床评价装置对铁污染接触剂进行重油裂化性能评价。结果表明:接触剂经铁污染后其比表面积、孔体积、总酸量、微反活性都有不同程度的下降,而孔径分布变化不大;环烷酸铁源污染铁可以进入到催化剂的体相中,在接触剂表面未发现明显的富集;铁污染接触剂使塔河常压渣油裂化产物分布发生明显变化。The iron deposited contact carriers were characterized by BET, NH3-TPD, SEM-EDX and their MAT and residue cracking performance were evaluated by micro-reactor and fixed-fluidized bed re- actor, respectively, using Tahe AR as feedstock. The results show that the specific surface area, pore volume, total acid amount and micro activity of contaminated carriers are all reduced with contamination increasing. However, the pore size distribution has little change. The iron from iron naphthenate can de- posit evenly in the bulk phase of the carriers with suitable larger pore structure, and the iron enrichment on the surface is not obvious. The iron contamination has a marked effect on the product distribution of Tahe AR cracking reaction.

关 键 词：重油 铁 接触剂裂化活性 

分 类 号：TE624[石油与天然气工程—油气加工工程]