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FCC process with riser reactor release zone with separation zone for suspended catalysts
FCC process with riser reactor release zone with separation zone for suspended catalysts
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机译:带提升管反应器释放区和分离区的FCC工艺,用于悬浮催化剂
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摘要
Operation of an FCC process is improved by using a novel reactor riser disengager configuration which results in catalyst being suspended in a disengagement zone in a riser section 29 proximate or above the riser cyclone inlets 34, as a consequence of vapors and catalyst leaving the riser through the cyclone inlets, to achieve a suspended catalyst density that is higher than the flowing catalyst density lower in the riser. The suspended catalyst provides a disengagement zone that enhances the separation of catalyst from product vapors. The riser 22,26,29 operates under conditions that prevent any substantial discharge of product vapour from its upper end 40. The arrangement also provides a convenient method for venting stripping vapors, introduced at 26, and leaving through reactor cyclone system 34,36,42,44. IMAGE
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