纳米自组装催化剂渣油加氢脱残炭性能

Residuum hydro-residual carbon removal property of nano self-assembly catalyst

根据纳米自组装机理,以γ-Al_2O_3为载体,Mo-Ni为活性组分,制备了正向胶束法和反应胶束法Mo-Ni纳米自组装催化剂。结果表明:以残炭质量分数为4.78%的渣油为原料,在Mo/Ni(质量比)为6∶1的条件下,当精制催化剂和裂化催化剂活性组分负载质量分数分别为30%,25%时,催化剂的残炭脱除效果为最佳;将正向胶束法制备的精制和裂化催化剂复配使用,在反应压力为14 MPa,体积空速为0.20 h^(-1),反应温度为350℃,氢气/原料油(体积比)为850的最佳条件下,渣油加氢脱残炭率最高达到53.82%。

The Mo-Ni nano self-assembly catalysts of forward micelle method and reactive micelle method were prepared by the mechanism of nano self-assembly with γ-Al2O3 as support and Mo-Ni as active components.The results showed that under the conditions of residuum with 4.78% residual carbon as raw material and Mo/Ni(mass ratio) of 6∶1, the loading mass fraction of active component in the refining and cracking catalyst was 30% and 25% respectively, the removal effect of residual carbon was the best.The refining and cracking catalysts prepared by forward micelle method were mixed,the highest removal rate of residual carbon was 53.82% under the optimum conditions of reaction pressure 14 MPa, volume space velocity 0.20 h-1,reaction temperature 350 ℃,hydrogen/raw oil(volume ratio) 850.