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公开(公告)号：US11041127B2
公开(公告)日：2021-06-22
申请号：US16639215
申请日：2018-08-10
摘要： Provided are systems and methods for obtaining ethylene and propylene products from, for example, shale gas and shale gas condensate feedstocks. These systems and method operate by utilizing a hydrocracker train to crack C4 and C5 hydrocarbons to a product stream of propane and ethane or using a hydrogenolysis train to process C4 and C5 hydrocarbons to a product stream of propane and ethane that is provided to a cracker for an efficient conversion to ethylene and propylene. The disclosed systems are configured to reduce the amount of offsite hydrogen needed and also provide product streams that include a well-defined set of products as compared to existing approaches.
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公开(公告)号：US10899979B2
公开(公告)日：2021-01-26
申请号：US16638896
申请日：2018-08-14
摘要： A process for producing olefins comprising introducing a steam cracker feed to a liquid steam cracker furnace section to produce a steam cracker product comprising olefins, and wherein an amount of olefins in the steam cracker product is greater than in the steam cracker feed; separating the steam cracker product in a separation unit into a hydrogen stream, a methane stream, an olefin gas stream (ethylene and propylene), a saturated gas stream (ethane and propane), a hydrocarbons gas stream (C4-5 hydrocarbons), an aromatics stream (C6-8 aromatic hydrocarbons), a raffinate stream (C6-8 non-aromatic hydrocarbons), and a heavies stream (C9+ hydrocarbons); feeding the hydrocarbons gas stream and hydrogen to one or more hydroprocessing reactors to produce a hydrocracking product comprising ethane and propane; and recycling the hydrocracking product and the saturated gas stream to the liquid steam cracker furnace section.
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