Oligomerizing Olefins in Light Coke Gasoline to Diesel

Abstract

We prepare a catalyst for FCC gasoline polymerizing to produce diesel oil, which uses non-noble metal Ni as the main active component; here mesopore γ-Al₂O₃ is used as the carrier. The effects of mass fraction of active components and the condition of preparing were investigated simultaneously. The results show that mass fraction of the main active component is 8%, soakage time is 6 hr, and the roasting temperature is 500°C to roast for 4 hr, which are better conditions for preparing the catalyst. Under the condition of a reaction temperature of 210°C, reaction pressure is 3.0 Mpa, space velocity is 1.0 h⁻¹, and volumetric percent of diesel is 42.0%, which meet a criterion of −35^# diesel. At the same time we study the stability and regeneration of the catalyst with good results.

Keywords:

• coke
• diesel
• light gasoline
• mixed olefins
• oligomerization