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CATALYTIC CRACKING OF LIGHT NAPHTHA OVER DUAL RISER FCC REACTOR

机译:双立管FCC反应器上轻质萘的催化裂化

摘要

Systems and methods for producing light olefins and aromatics from light naphtha are disclosed. The light naphtha is fed to a first catalyst riser to crack the C5 to C7 hydrocarbons in the light naphtha stream. The cracked naphtha stream is fractionated to produce a stream comprising primarily C4 to C6 hydrocarbons or a stream comprising primarily C5 to C12 hydrocarbons. When the stream comprising primarily C4 to C6 hydrocarbons is fed to the second catalyst riser, the product stream from the second riser comprises light olefins as the main product. When the stream comprising primarily C5 to C12 hydrocarbons is fed to the second riser, the product stream from the second riser comprises aromatics as the main product.
机译:公开了由轻石脑油生产轻质烯烃和芳族化合物的系统和方法。将轻质石脑油进料至第一催化剂提升管,以将轻质石脑油流中的C 5 转化为C 7 烃。分馏裂化的石脑油料流以产生主要包含C 4 至C 6 烃的料流或主要包含C 5 至C 12 碳氢化合物。当将主要包含C 4 至C 6 烃的物流进料至第二催化剂提升管时,来自第二提升管的产物流包含轻烯烃作为主要产物。当主要包含C 5 至C 12 烃的物流进料至第二提升管时,来自第二提升管的产物流包含芳族化合物作为主要产物。

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