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公开(公告)号：US20250059449A1
公开(公告)日：2025-02-20
申请号：US18744973
申请日：2024-06-17
Inventor： Jihad M. Dakka , Arun K. Sharma , Xiaochun Xu , Richard C. Senior , Jason M. Golias
Abstract: The present disclosure provides methods and systems for converting ethanol and cracking hydrocarbons into ethylene and at least cracked products. A method to convert ethanol and cracking hydrocarbons includes: introducing a hydrocarbon feed into a riser of a fluid catalytic cracking reactor such that hydrocarbons in the hydrocarbon feed reacts in the presence of one or more fluid catalytic cracking catalysts to produce at least cracked products; and introducing an ethanol feed into an upper one third of a stripper of the fluid catalytic cracking reactor such that the ethanol reacts in the presence of spent catalyst flowing downwardly from a separator section of the fluid catalytic cracking reactor to produce at least ethylene.
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公开(公告)号：US12030845B2
公开(公告)日：2024-07-09
申请号：US17807024
申请日：2022-06-15
Inventor： Wesley Sattler , Jihad M. Dakka , Guang Cao , Xinrui Yu , Brandon M. Carcuffe , Jason M. Golias , Scott J. Weigel , Carolyn M. Aimino , Megan E. Witzke
CPC classification number: C07C5/2705 , B01J21/066 , B01J23/002 , B01J23/30 , C07C2521/06 , C07C2523/30
Abstract: Isomerization of normal paraffins to form branched paraffins may be complicated by significant cracking of C7+ paraffins under isomerization reaction conditions. This issue may complicate upgrading of hydrocarbon feeds having significant quantities of heavier normal paraffins. Cracking selectivity may be decreased by combining one or more naphthenic compounds with a feed mixture comprising at least one C7+ normal paraffin and/or by utilizing tungstated zirconium catalysts having decreased tungsten loading. Further, C5 and C6 normal paraffins may undergo isomerization in the presence of C7+ normal paraffins. Methods for isomerizing normal paraffins may comprise: providing a feed mixture comprising at least C5-C7 normal paraffins and lacking normal paraffins larger than C8; and contacting the feed mixture with a bifunctional mixed metal oxide catalyst under isomerization reaction conditions effective to form a product mixture comprising one or more branched paraffins formed from each of the C5-C7 normal paraffins.
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公开(公告)号：US20220402838A1
公开(公告)日：2022-12-22
申请号：US17807024
申请日：2022-06-15
Inventor： Wesley Sattler , Jihad M. Dakka , Guang Cao , Xinrui Yu , Brandon M. Carcuffe , Jason M. Golias , Scott J. Weigel , Carolyn M. Aimino , Megan E. Witzke
Abstract: Isomerization of normal paraffins to form branched paraffins may be complicated by significant cracking of C7+ paraffins under isomerization reaction conditions. This issue may complicate upgrading of hydrocarbon feeds having significant quantities of heavier normal paraffins. Cracking selectivity may be decreased by combining one or more naphthenic compounds with a feed mixture comprising at least one C7+ normal paraffin and/or by utilizing tungstated zirconium catalysts having decreased tungsten loading. Further, C5 and C6 normal paraffins may undergo isomerization in the presence of C7+ normal paraffins. Methods for isomerizing normal paraffins may comprise: providing a feed mixture comprising at least C5-C7 normal paraffins and lacking normal paraffins larger than C8; and contacting the feed mixture with a bifunctional mixed metal oxide catalyst under isomerization reaction conditions effective to form a product mixture comprising one or more branched paraffins formed from each of the C5-C7 normal paraffins.
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