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    Process for dehydration of oxygenates with heteropolyacid catalysts having mixed oxide supports and use of the same
    1.
    发明授权
    Process for dehydration of oxygenates with heteropolyacid catalysts having mixed oxide supports and use of the same 有权

    公开(公告)号：US10407356B2

    公开(公告)日：2019-09-10

    申请号：US15537819

    申请日：2015-12-18

    Applicant: TECHNIP E&C LIMITED

    Inventor： Stephen Roy Partington

    IPC: C07C1/24

    Abstract: The present invention relates to a process for producing ethene by the vapor phase dehydration of ethanol using a supported heteropolyacid catalyst. In particular, the present invention involves the use of a supported heteropolyacid catalyst, wherein the supported heteropolyacid catalyst is: i) a mixed oxide support comprising silica and a transition metal oxide, wherein silica is present in an amount of at least 50 wt. %, based on the weight of the mixed oxide support; or ii) a mixed oxide support comprising zirconia and a different transition metal oxide, wherein zirconia is present in an amount of at least 50 wt. %, based on the weight of the mixed oxide support. When used in a process for the preparation of ethene by vapor phase dehydration, and after attaining steady-state performance of the catalyst, the process may be operated continuously with the same supported heteropolyacid catalyst for at least 150 hours without any regeneration of the catalyst.

    PROCESS FOR PREPARING AN ALKENE
    3.
    发明申请
    PROCESS FOR PREPARING AN ALKENE 审中-公开

    公开(公告)号：US20170297974A1

    公开(公告)日：2017-10-19

    申请号：US15637384

    申请日：2017-06-29

    Applicant: TECHNIP E&C LIMITED

    Inventor： Stephen Roy Partington

    IPC: C07C1/20

    CPC classification number: C07C1/20 ,  C07C2521/06 ,  C07C2521/08 ,  C07C2523/30 ,  Y02P20/52 ,  Y02P30/42 ,  C07C11/04 ,  C07C11/02

    Abstract: A process for the preparation of an alkene from an oxygenate comprising contacting a reactant feedstream comprising at least one oxygenate reactant and water with a supported heteropolyacid catalyst at a temperature of at least 170° C., wherein the process is initiated using a start-up procedure comprising the following steps: (i) heating the supported heteropolyacid catalyst to a temperature of at least 220° C.; (ii) maintaining the heat-treated supported heteropolyacid catalyst of step (i) at a temperature of at least 220° C. for a time sufficient to remove bound water from the heteropolyacid component of the supported heteropolyacid catalyst; (iii) under an anhydrous atmosphere, reducing the temperature of the heat-treated supported heteropolyacid catalyst of step (ii) to a temperature below 220° C.; and (iv) contacting the supported heteropolyacid catalyst of step (iii) with the reactant feedstream at a temperature of at least 170° C.

    Process for producing alkenes from oxygenates by using supported partially neutralised heteropolyacid catalysts
    4.
    发明授权
    Process for producing alkenes from oxygenates by using supported partially neutralised heteropolyacid catalysts 有权

    公开(公告)号：US10464051B2

    公开(公告)日：2019-11-05

    申请号：US15537823

    申请日：2015-12-18

    Applicant: TECHNIP E&C LIMITED

    Inventor： Stephen Roy Partington

    IPC: B01J27/188 ,  B01J37/02 ,  B01J23/30 ,  C07C1/24

    Abstract: A process for the vapour phase chemical dehydration of ethanol in a reactor in the presence of a supported heteropolyacid catalyst, said process comprising a step of contacting the ethanol with the heteropolyacid catalyst, wherein the heteropolyacid catalyst comprises a partially neutralised silicotungstic acid salt, wherein the partially neutralised silicotungstic acid salt has from 30% to 70% of the hydrogen atoms replaced with cations selected from the group consisting of alkali metal cations, alkaline earth metal cations, transition metal cations, ammonium cations, and mixtures thereof; but with the proviso that the alkali metal cation is not lithium; and wherein, after attaining steady-state performance of the catalyst, said process is operated continuously with the same supported heteropolyacid catalyst for at least 150 hours, without any regeneration of the catalyst.

    Process for preparing ethene
    5.
    发明授权
    Process for preparing ethene 有权

    公开(公告)号：US10144679B2

    公开(公告)日：2018-12-04

    申请号：US15529136

    申请日：2015-11-19

    Applicant: Technip E&C Limited

    Inventor： Stephen Roy Partington ,  Stephen James Smith ,  Nakul Thakar

    IPC: C07C1/24 ,  B01J23/30 ,  B01J37/08 ,  B01J23/00 ,  B01J27/188 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  B01J21/08

    Abstract: The present invention provides a process for the preparation of ethene by vapor phase chemical dehydration of a feed-stream comprising ethanol and optionally water and/or ethoxy ethane, said process comprising contacting a dried supported heteropolyacid catalyst in a reactor with the feed-stream having a feed temperature of at least 200° C.; wherein before the supported heteropolyacid catalyst is contacted with the feed-stream having a feed temperature of at least 200° C., the process is initiated by: (i) drying a supported heteropolyacid catalyst in a reactor under a stream of inert gas having a feed temperature of from above 100° C. to 200° C.; and (ii) contacting the dried supported heteropolyacid catalyst with an ethanol-containing vapor stream having a feed temperature of from above 100° C. to 160° C.

    Process for preparing ethene
    7.
    发明授权
    Process for preparing ethene 有权

    公开(公告)号：US10329210B2

    公开(公告)日：2019-06-25

    申请号：US15529169

    申请日：2015-11-19

    Applicant: Technip E&C Limited

    Inventor： Stephen Roy Partington ,  Stephen James Smith ,  Nakul Thakar

    IPC: C07C1/24 ,  B01J23/30 ,  C07C11/04

    Abstract: The present invention provides a process for the preparation of ethene by vapor phase chemical dehydration of a feed comprising ethanol and optionally water and/or ethoxyethane, said process comprising contacting a dried supported heteropoly acid catalyst in a reactor with the feed-stream having feed temperature of at least 200° C.; wherein the pressure inside the reactor is at least 0.80 MPa but less than 1.80 MPa; and before the supported heteropolyacid catalyst is contacted with the feed-stream having a feed temperature of at least 200° C., the process is initiated by: (i) drying a supported heteropolyacid catalyst in a reactor under a stream of inert gas having a feed temperature of from above 100° C. to 200° C.; and (ii) contacting the dried supported heteropolyacid catalyst with an ethanol-containing vapor stream having a feed temperature of from above 100° C. to 160° C.

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