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    PROCESS FOR THE DEHYDRATION OF OXYGENATED COMPOUNDS
    6.
    发明申请
    PROCESS FOR THE DEHYDRATION OF OXYGENATED COMPOUNDS 审中-公开

    公开(公告)号：US20180002249A1

    公开(公告)日：2018-01-04

    申请号：US15540399

    申请日：2016-02-22

    申请人： VERSALIS S.P.A.

    发明人： Nicola VECCHINI ,  Gianni GIROTTI

    IPC分类号： C07C1/24 ,  B01J21/12 ,  B01J23/10 ,  C07C29/60

    CPC分类号： C07C1/24 ,  B01J21/12 ,  B01J23/10 ,  B01J35/023 ,  B01J37/031 ,  C07C29/60 ,  C07C2521/12 ,  C07C11/167 ,  C07C33/025 ,  C07C33/03

    摘要： The present invention relates to a process for the dehydration of at least one oxygenated compound, preferably selected from saturated alcohols, unsaturated alcohols, diols, ethers, in the presence of at least one dehydration catalyst selected from cerium oxide (CeO2), aluminium oxide (γ-Al2O3), aluminium silicate, silica-aluminas (SiO2-Al2O3), aluminas, zeolites, sulfonated resins, ion-exchange resins, metal oxides (for example, lanthanum oxide, zirconium oxide, tungsten oxide, thallium oxide, magnesium oxide, zinc oxide); of at least one basic agent selected from ammonia (NH3), or from inorganic or organic compounds containing nitrogen capable of developing ammonia (NH3) during said dehydration process; and, optionally, of silica (SiO2), or of at least one catalyst for the dissociation of ammonia (NH3) selected from catalysts comprising silica (SiO2), preferably of silica (SiO2).

    PROCESS FOR THE PRODUCTION OF 1,3-BUTADIENE FROM 1,3-BUTANEDIOL
    7.
    发明申请
    PROCESS FOR THE PRODUCTION OF 1,3-BUTADIENE FROM 1,3-BUTANEDIOL 审中-公开

    公开(公告)号：US20170313633A1

    公开(公告)日：2017-11-02

    申请号：US15529778

    申请日：2015-12-11

    申请人： Versalis S.p.A.

    发明人： Nicola VECCHINI ,  Armando GALEOTTI ,  Andrea PISANO

    IPC分类号： C07C1/24 ,  C12P7/18 ,  C07C29/60

    CPC分类号： C07C1/24 ,  C07C29/60 ,  C12P7/18 ,  C07C11/167 ,  C07C33/025 ,  C07C33/03

    摘要： Process for the production of 1,3-butadiene comprising: feeding a mixture (a) comprising 1,3-butanediol and water to an evaporator, said water being present in an amount of greater than or equal to 5% by weight, preferably ranging from 10% by weight to 85% by weight, more preferably ranging from 15% by weight to 30% by weight, relative to the total weight of said mixture (a), to obtain: (b) a gaseous stream comprising 1,3-butanediol exiting from the top of said evaporator; and, optionally, (c) a blow-down stream exiting from the bottom of said evaporator; feeding said gaseous stream (b) to a first reactor containing at least one dehydration catalyst to obtain (d) a stream comprising alkenols, water and, optionally, impurities and/or unreacted 1,3-butanediol, exiting from said first reactor; optionally, feeding said stream (d) to a first purification section to obtain: (e) a stream comprising al-kenols, water, and, optionally, impurities; (f) a stream comprising water and, optionally, impurities and/or unreacted, 3-butanediol; and, optionally, (f) a stream comprising impurities; feeding said stream (d) or said stream (e) to a second reactor containing at least one dehydration catalyst to obtain (g) a stream comprising 1,3-butadiene, water and, optionally, impurities and/or unreacted alkenols, exiting from said second reactor; feeding said stream (g) to a second purification section to obtain: (h) a stream comprising pure 1,3-butadiene; (i) a stream comprising water and, optionally, unreacted alkenols; and, optionally, (1) a stream comprising impurities. Said 1,3-butadiene may advantageously be used as a monomer or intermediate in the production of elastomers and (co)polymers.