Post-riser quench improves FCC yields, profitability
- Amoco Petroleum Products, Naperville, IL (United States)
- Stone and Webster Engineering Corp., Houston, TX (United States)
Performance tests of a post-riser quench system have shown increases in gasoline yield; reductions in fuel gas, butadienes, and pentadienes; and improved oxidation stability of FCC gasoline. Following commercial trials in six of Amoco Petroleum Products` refineries for some 10 years, the system is now being installed by other refiners. Elimination of post-riser thermal cracking is essential to achieving the most desirable product slate. Most of Amoco`s FCC units (FCCUs) have rough-cut cyclone systems in which there is significant vapor residence time in the disengaging vessel. To overcome this problem Amoco chose to reduce the temperature in the dilute phase. This technology involves quenching the dilute phase, thereby reducing the thermal cracking rates. The approach is very effective and virtually eliminates post-riser cracking. This paper reviews this design.
- OSTI ID:
- 175918
- Journal Information:
- Oil and Gas Journal, Vol. 94, Issue 3; Other Information: PBD: 15 Jan 1996
- Country of Publication:
- United States
- Language:
- English
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