关键词: 催化裂化, 柴油, 催化剂, 汽油, 液化气

Abstract: The commercial trial of enhancing diesel fraction yield in the FCC unit of Fushun Petrochemical Company was introduced. The trial results showed that by adopting measures, such as adjusting operation parameters of reaction-regeneration system and fractionation system, using DMC-2 catalyst designed for the increase of diesel yield, the product slates were improved: the yields of diesel fraction and light oils increased 3.77 and 1.81 percentage points, respectively; the mass ratio of diesel to gasoline increase 0.10. As to the qualities of products, since the boiling range of diesel fraction was broadened, its cetane number was slightly lower; gasoline having lower olefin content, longer induction period and unchanged octane number; without negative effect was found on dry gas and LPG. Furthermore, the energy consumption of the unit was reduced. On the whole, a 37.72 million RMB economic benefit could be obtained annually.

Key words: fluid catalytic cracking, diesel fuel, catalyst, gasoline, liquefied petroleum gas