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公开(公告)号：US10131849B2
公开(公告)日：2018-11-20
申请号：US15307405
申请日：2015-04-20
Applicant: AXENS
Inventor： Isabelle Prevost , Laurent Watripont , Pierre-Yves Martin , Jerome Pigourier
Abstract: The present invention describes a process for the isomerization of a light naphtha with a view to forming high octane number gasolines, said process using a deisopentanizer and a deisohexanizer which are thermally integrated in a manner such as to reduce the consumption of the high temperature utilities employed in the process.
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公开(公告)号：US10669493B2
公开(公告)日：2020-06-02
申请号：US16402300
申请日：2019-05-03
Applicant: Axens
Inventor： Jérôme Pigourier , Isabelle Prevost
IPC: C10G61/08 , B01D3/14 , B01D3/32 , B01J19/24 , C07C5/27 , C07C6/12 , C07C7/00 , C07C7/04 , C07C7/12
Abstract: The present invention relates to a process and to a device for the separation of a feedstock comprising benzene, toluene and C8+ compounds, in which: a toluene column (C10) is fed directly with a C7+ cut resulting from the bottom of a stabilization column (C11) positioned downstream of a transalkylation unit (P4); a C7− cut is withdrawn at the top of the toluene column (C10) and a C8+ cut is withdrawn at the bottom; a benzene column (C9) is fed with the C7− cut resulting from the toluene column (C10); an essentially aromatic cut resulting from an aromatics extraction unit (P1) is injected into the toluene column (C10) separately above the feeding of the C7+ cut or into the benzene column (C9).
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Patent Agency Ranking
3.发明授权公开(公告)号：US09745232B2
公开(公告)日：2017-08-29
申请号：US14886912
申请日：2015-10-19
Applicant: AXENS
Inventor： Jerome Pigourier , Isabelle Prevost , Laurent Watripont , Pierre-Yves Martin
CPC classification number: C07C5/2772 , C07C5/2791 , C07C7/11 , C07C2521/04 , C07C2523/42 , C07C2527/06 , C10G35/04 , C10G45/60 , C07C9/16 , C07C9/18
Abstract: A process for the isomerization of a feed of hydrocarbon compounds containing C5 and/or C hydrocarbon compounds, comprising: a) supplying an isomerization unit with at least one liquid fraction of the feed of hydrocarbon compounds and isomerizing the feed in the presence of a chlorinated catalyst; b) supplying a stabilization unit containing at least one stabilization column with the effluent obtained from the isomerization unit and separating the effluent; c) providing an absorption unit having one absorption column; d) extracting a liquid flow enriched in chlorinated compounds from the absorption unit which is recycled to the isomerization unit; and e) extracting the liquid flow containing at least one isomerate from the stabilization unit.
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公开(公告)号：US11242302B2
公开(公告)日：2022-02-08
申请号：US17256290
申请日：2019-06-21
Applicant: AXENS
Inventor： Isabelle Prevost , Jerome Pigourier , Gerard Hotier
Abstract: The present invention describes a process for obtaining para-xylene from a feedstock containing xylenes, ethylbenzene and C9+ hydrocarbons, said process comprising a single stage A of separation in a simulated moving bed carried out with a zeolite as adsorbent and a desorbent and making it possible to obtain at least three fractions, a fraction A1 comprising a mixture of para-xylene and of desorbent and two fractions A21, A22 comprising ethylbenzene (EB), ortho-xylene (OX) and meta-xylene (MX) and desorbent, said stage is carried out at a temperature between 20° C. and 250° C., under a pressure between the bubble pressure of the xylenes at the operating temperature and 2.0 MPa, and with a ratio by volume of the desorbent to the feedstock in the unit for separation 2 in a simulated moving bed is between 0.4 and 2.5, a stage B of fractionation by distillation in a 2-cut distillation column of the fractions A21 and A22 resulting from stage A, in which said fractions are introduced separately at distinct injection points, and makes it possible to obtain a fraction B2 containing ethylbenzene, ortho-xylene and meta-xylene, and a fraction B42 devoid of aromatic compounds having 8 carbon atoms and containing desorbent.
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公开(公告)号：US10954176B2
公开(公告)日：2021-03-23
申请号：US16454406
申请日：2019-06-27
Applicant: AXENS
Inventor： Isabelle Prevost , Jerome Pigourier , Pierre-Yves Martin , Arnaud Cotte
Abstract: The present invention relates to a process for producing high-purity para-xylene, comprising a single step of separation by adsorption in an SMB, with a subsequent step of separation by distillation in a first three-fraction distillation column producing at least two raffinates and optionally of two isomerization steps, making it possible to improve the overall para-xylene yield of the aromatic loop and to minimize the economic impact.
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公开(公告)号：US10113121B2
公开(公告)日：2018-10-30
申请号：US15307593
申请日：2015-04-20
Applicant: AXENS
Inventor： Jerome Pigourier , Isabelle Prevost , Laurent Watripont , Pierre-Yves Martin
Abstract: The present invention describes a process for the production of high octane number gasoline by isomerization of a light naphtha cut, comprising two separation steps located downstream of the reaction step which can be used to improve the energy efficiency of said process.
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7.发明授权公开(公告)号：US09908061B2
公开(公告)日：2018-03-06
申请号：US14646434
申请日：2013-10-17
Applicant: AXENS
Inventor： Alain Dunet , Isabelle Prevost , Thierry Leflour
CPC classification number: B01D3/146 , B01D1/28 , B01D1/2856 , B01D3/007 , C10G25/00 , C10G45/58 , Y02P70/34
Abstract: A method for recovering heat available at low temperature in a process and its use in order to reduce the energy consumption of the said process, and application of this method to an aromatics complex in which the low-temperature heat is recovered at the head of distillation columns in the form of low-pressure steam and is reused to reboil other distillation columns in which the operating pressure has possibly been lowered.
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