Abstract: This article introduces the production engineering of and the application of high efficiency benzene hydrogenation catalyst NJBMDA-Ⅱ in this unit. The result shows that NJBMDA-Ⅱ has good activity at low temperature, with strong activity at initial temperature around 125 ℃. It also has high liquid phase space velocity, strong dearomatizing performance, high production efficiency. At conditions of 135 ℃,hydrogen partial pressure of 2.2 MPa, LHSV of 1.0 h-1 and H2/oil volume ratio of 400, aromatic content is less than 1% in the product oil. The production and control process is simple and reliable, which is able to meet the scale production demand of environment-friendly refined white oil with low aromatic content. The unit has fine economic benefit.

Key words: hydrogenation, dearomatization, catalyst, white oil, low temperature activity