| 摘要 |
<p>A process for treating a by-product oil is disclosed, which comprises treating a raw material containing a heavy oil formed as a by-product in the step of producing alkylbenzene or the like by alkylation of benzene or the like, with a catalyst of crystalline synthetic zeolite having a SiO2/Al2O3 (molar ratio) of 20 or more and a main cavity opening composed of a 10-membered oxygen ring in a liquid phase at a temperature of 320°C or below, wherein said raw material contains up to 2 wt % of methylnaphthalene. This process makes it possible to prevent reduction in the catalytic treatment efficiency.</p> |
