摘要
在研究重金属镍、钒对烃类裂化催化剂中毒机理的基础上,通过具有一剂多能和协同作用元素间的复配和优化,并考虑工业应用的可行性和成本,研制了无毒、高效和稳定性好的DFP抗钒、抗镍双功能水溶性钝化剂,在乌鲁木齐石化公司1.2 Mt/a的重油催化裂化装置(RFCCU)进行了工业应用试验。结果表明,当原料油中掺质量分数为39％-42％的减压渣油,平衡剂上钒质量分数高达7.5×10^(-9)-9×10^(-9),镍质量分数为5×10^(-9)-6×10^(-9)条件下,使用DFP钝化剂与国产钝化剂MP相比,轻质油收率提高0.45％,焦炭产率下降16％-20％,氢气产率下降25％-30％,平衡剂活性指数提高4-5个单位,使用方便,有显著的经济效益和社会效益。
DFP, a newly developed vanadium and nickel passivator featured by non-toxicity, high efficiency and stability, was tested on a industrial RFCC unit. Test results showed that, with 39%-42% (wt) residue in the feedstock and 7500-9000 ppm vanadium and 5000-6000 ppm nickel in the equilibi-um catalyst, light oil yield and activity were increased by 0.45% and 4%-5% respectively, and coke yiel dand hydrogen yield were reduced by 16%-20% (wt) and 25%-30% (wt), respectively, compared with MP, a typical passivator in domestic market.
出处
《工业催化》
CAS
2003年第9期41-47,共7页
Industrial Catalysis
关键词
催化裂化
钒镍钝化剂
重金属污染
催化剂
fluid catalytic cracking(FCC)
catalyst
vanadium and nickel passivator
heavy metal contamination
