摘要
以TiO_2-Al_2O_3复合物为载体,采用浸渍法负载金属Ni制备了Ni/TiO_2-Al_2O_3裂解汽油预加氢催化剂(YN-1型)。针对裂解C_9^+原料在实验室200 m L加氢小试装置上进行了评价,并在新疆独山子天利实业总公司裂解C_9^+预加氢装置上对该催化剂进行了工业应用。实验室评价结果表明,YN-1型催化剂用于裂解C_9^+原料一段加氢,不但具有良好的低温加氢活性和选择性,且稳定性良好;工业应用结果表明,在反应器入口温度远低于设计温度的条件下,对于胶质含量(基于100 m L原料油)大于100 mg和溴价(基于100 g原料油)大于95 g的裂解C_9^+原料进行预加氢,装置操作平稳,催化剂床层未出现飞温现象,催化剂能够适应超过90℃的反应温升;加氢产品中苯乙烯类芳烃、二烯烃、双环二烯烃和茚的含量(w)比原料分别下降了75.51%,91.00%,85.51%,56.64%,且芳烃没有损失。
The YN-1 catalyst Ni/TiO_2-Al_2O_3 for the pre-hydrogenation of pyrolysis gasoline was prepared by impregnation and was evaluated in 200 m L experimental installation with C_9~＋ in the pyrolysis gasoline as feedstock. The YN-1 catalyst showed high activity and selectivity at low temperature,and good stability when it was used in the first stage hydrogenation of the C_9~＋. Its industrial application in the pre-hydrogenation unit of Xinjiang Dushanzi Tianli Industrial Company was carried out. The results showed that the unit could run smoothly without the temperature runaway of the catalyst bed with the C_9~＋ feedstock with gum level（100 m L oil） was more that 100 mg and bromine valene（100 g oil） was more that 95 g. The YN-1 catalyst could adapt to reaction temperature rise by more than 90 ℃. Compared to the feedstock,the contents（w） of styrene type aromatics,diene,dicyclodiene and indene in the products were reduced by 75.51%,91.00%,85.52% and 56.64%,respectively,without aromatics loss.
出处
《石油化工》
CAS
CSCD
北大核心
2016年第5期607-613,共7页
Petrochemical Technology
