利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

79 条记录 (耗时 0.033 秒)

    SHUTDOWN METHOD FOR A PROCESS FOR PREPARING AN OLEFIN OXIDE
    1.
    发明公开
    SHUTDOWN METHOD FOR A PROCESS FOR PREPARING AN OLEFIN OXIDE 审中-公开

    公开(公告)号：US20240279194A1

    公开(公告)日：2024-08-22

    申请号：US18569645

    申请日：2022-06-14

    申请人： BASF SE ,  Dow Global Technologies LLC

    发明人： Dominic RIEDEL ,  Maria Angel SAN PIO BORDEJE ,  Joaquim Henrique TELES ,  Andrei-Nicolae PARVULESCU ,  Dylan SEGERS ,  Meinolf WEIDENBACH ,  Franciscus Johannes Robertus VAN NEER ,  Massimo BERGAMO

    IPC分类号： C07D303/04

    CPC分类号： C07D303/04

    摘要： In a first aspect, the present invention relates to a shutdown method for a process for preparing an olefin oxide comprising a normal run stage, wherein the normal run stage comprises providing olefin, hydrogen peroxide and organic solvent into an epoxidation zone comprising an heterogeneous epoxidation catalyst, so that a reaction mixture comprising olefin, hydrogen peroxide and organic solvent is formed and subjecting the reaction mixture to epoxidation reaction conditions in the epoxidation zone, thereby obtaining a mixture comprising olefin oxide and organic solvent; wherein the shutdown method comprises (a) providing olefin and organic solvent for a period of time t1 to the epoxidation zone, so that a mixture is formed, which is essentially free of hydrogen peroxide; (b) contacting the mixture from (a) over t1 under epoxidation reaction conditions in the epoxidation zone with the heterogeneous epoxidation catalyst; (c) removing during t1 an effluent stream from the epoxidation zone, the effluent stream comprising olefin and organic solvent. In a second aspect, the present invention relates to a process for preparing an olefin oxide comprising a normal run stage and a shutdown stage, wherein the normal run stage comprises (A) providing olefin, hydrogen peroxide, water and organic solvent into an epoxidation zone comprising an heterogeneous epoxidation catalyst, so that a reaction mixture comprising olefin, hydrogen peroxide, water and organic solvent is formed; (B) subjecting the reaction mixture from (I) to epoxidation reaction conditions in the epoxidation zone, thereby obtaining a mixture comprising olefin oxide, water and organic solvent; (C) removing an effluent stream from the epoxidation zone, comprising olefin oxide, water and organic solvent; wherein the shutdown stage comprises steps (a), (b) and (c) as described with respect to the first aspect.

    PROCESS FOR PREPARING PROPYLENE OXIDE
    3.
    发明申请
    PROCESS FOR PREPARING PROPYLENE OXIDE 有权
    制备丙烯氧化物的方法

    公开(公告)号：US20160176834A1

    公开(公告)日：2016-06-23

    申请号：US14907998

    申请日：2014-07-16

    申请人： BASF SE ,  DOW GLOBAL TECHNOLOGIES LLC

    发明人： Joaquim Henrique TELES ,  Bianca SEELIG ,  Dominic RIEDEL ,  Philip KAMPE ,  Daniel URBANCZYK ,  Markus WEBER ,  Ulrich MUELLER ,  Andrei-Nicolae PARVULESCU ,  Kai GUMLICH ,  Peter BASSLER ,  Christian BARTOSCH ,  Richard JACUBINAS ,  Meinolf WEIDENBACH ,  Werner WITZL

    IPC分类号： C07D301/12 ,  B01J27/188 ,  B01J27/18 ,  B01J29/70

    CPC分类号： C07D301/12 ,  B01J27/18 ,  B01J27/188 ,  B01J29/7038 ,  B01J29/7088 ,  B01J35/002 ,  B01J35/1019 ,  B01J2229/186 ,  Y02P20/52

    摘要： A continuous process for the preparation of propylene oxide, comprising (i) providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, water, optionally propane, and at least one dissolved potassium salt of a phosphorus oxyacid wherein the molar ratio of potassium relative to phosphorus in the at least one potassium salt of a phosphorus oxyacid is in the range of from 0.6 to 1.4; (ii) passing the liquid feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MVVW comprising zinc, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the at least one dissolved potassium salt of a phosphorus oxyacid, optionally propene, and optionally propane; (iii) removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the at least one dissolved potassium salt of a phosphorus oxyacid, optionally propene, and optionally propane.

    摘要翻译： 一种用于制备环氧丙烷的连续方法，包括（i）提供包含丙烯，过氧化氢，乙腈，水，任选的丙烷和至少一种溶解的含磷酸钾的液体进料流，其中钾相对的摩尔比 在磷氧基酸的至少一种钾盐中的磷在0.6至1.4的范围内; （ii）将（i）中提供的液体进料流送入包含催化剂的环氧化反应器中，所述催化剂包含含锌的结构型MVVW的钛沸石，并使液体进料流在环氧化反应器中进行环氧化反应条件，得到反应混合物 包括环氧丙烷，乙腈，水，所述至少一种溶解的含磷酸的钾盐，任选的丙烯，以及任选的丙烷; （iii）从环氧化反应器中除去流出物流，所述流出物流包含环氧丙烷，乙腈，水，所述至少一种溶解的含磷酸的钾盐，任选的丙烯和任选的丙烷的至少一部分。

    PART-STREAM DISTILLATION
    4.
    发明申请
    PART-STREAM DISTILLATION 审中-公开

    公开(公告)号：US20160115140A1

    公开(公告)日：2016-04-28

    申请号：US14787956

    申请日：2014-04-28

    申请人： BASF SE ,  DOW GLOBAL TECHNOLOGIES LLC

    发明人： Joaquim H. TELES ,  Dominic RIEDEL ,  Bianca SEELIG ,  Philip KAMPE ,  Daniel URBANCZYK ,  Markus WEBER ,  Alexander SCHROEDER ,  Andrei-Nicolae PARVULESCU ,  Ulrich MUELLER ,  Meinolf WEIDENBACH ,  Werner WITZL ,  Holger BAER

    IPC分类号： C07D301/12 ,  B01D3/14 ,  C07D301/32

    CPC分类号： C07D301/12 ,  B01D3/143 ,  C07D301/32

    摘要： A continuous process for the preparation of propylene oxide, comprising (a) reacting propene, optionally admixed with propane, with hydrogen peroxide in a reaction apparatus in the presence of acetonitrile as solvent, obtaining a stream S0 containing propylene oxide, acetonitrile, water, at least one further component B, optionally propene and optionally propane, wherein the normal boiling point of the at least one component B is higher than the normal boiling point of acetonitrile and wherein the decadic logarithm of the octanol-water partition coefficient (log Kow) of the at least one component B is greater than zero; (b) separating propylene oxide from S0, obtaining a stream S1 containing acetonitrile, water and the at least one further component B; (c) dividing S1 into two streams S2 and S3; (d) subjecting S3 to a vapor-liquid fractionation in a fractionation unit, obtaining a vapor fraction stream S4 being depleted of the at least one component B; (e) recycling at least a portion of S4, optionally after work-up, to (a).

    摘要翻译： 一种用于制备环氧丙烷的连续方法，包括（a）在乙腈作为溶剂的存在下，在反应装置中将丙烯任选与丙烷混合，与过氧化氢反应，得到含有环氧丙烷，乙腈，水的流S0 至少一种另外的组分B，任选的丙烯和任选的丙烷，其中至少一种组分B的标准沸点高于乙腈的标准沸点，其中辛醇 - 水分配系数（log Kow）的十进制对数 所述至少一个组分B大于零; （b）从S0分离环氧丙烷，得到含有乙腈，水和至少一种其它组分B的料流S1; （c）将S1划分成两个流S2和S3; （d）使S3在分馏装置中进行汽 - 液分馏，得到耗尽至少一种B成分的蒸汽馏分流S4; （e）将至少一部分S4，任选地在后处理之后再循环至（a）。

    PROCESS FOR THE PREPARATION OF A LIQUID MIXTURE COMPRISING METHANOL, WATER AND HYDROGEN PEROXIDE
    5.
    发明公开
    PROCESS FOR THE PREPARATION OF A LIQUID MIXTURE COMPRISING METHANOL, WATER AND HYDROGEN PEROXIDE 审中-公开

    公开(公告)号：US20240294483A1

    公开(公告)日：2024-09-05

    申请号：US18572209

    申请日：2022-06-22

    申请人： BASF SE ,  Dow Global Technologies LLC

    发明人： Andrei-Nicolae PARVULESCU ,  Joaquim Henrique TELES ,  Dominic RIEDEL ,  Dylan SEGERS ,  Massimo BERGAMO ,  Franciscus Johannes Robertus VAN NEER ,  Meinolf WEIDENBACH

    IPC分类号： C07D301/12

    CPC分类号： C07D301/12

    摘要： The present invention relates in a first aspect to a process for the preparation of a liquid mixture comprising methanol, water and hydrogen peroxide, the process comprising: (i) providing a feed stream comprising methanol, and a feed stream comprising an aqueous hydrogen peroxide solution; (ii) combining the feed stream comprising the methanol and the feed stream comprising the aqueous hydrogen peroxide solution provided according to (i) at a point in time t1, so that a combined stream comprising methanol, hydrogen peroxide and water is obtained; (iii) filtrating the combined stream obtained according to (ii) at a point in time t2, through a filtration device, thereby obtaining a liquid mixture comprising methanol, hydrogen peroxide and water; wherein the period of time between t1 and t2 is at least 8 seconds. In a second aspect, the invention relates to the use of a liquid mixture obtained or obtainable from the process of the first aspect for the preparation of propylene oxide. A third aspect of the invention is directed to a method for the preparation of propylene oxide comprising: (i) providing a feed stream comprising methanol, a feed stream comprising an aqueous hydrogen peroxide solution and a feed stream comprising propylene; (ii) combining the feed stream comprising the methanol and the feed stream comprising the aqueous hydrogen peroxide solution provided according to (i) at a point in time t1, so that a combined stream comprising methanol, hydrogen peroxide and water is obtained; (iii) filtrating the combined stream obtained according to (ii) at a point in time t2, through a filtration device, thereby obtaining a liquid mixture comprising methanol, hydrogen peroxide and water; (iv) combining the feed stream comprising propylene either with the combined stream obtained in (ii) or with the liquid mixture obtained in (iii), thereby obtaining a liquid mixture comprising methanol, hydrogen peroxide, water and propylene; (v) bringing the liquid mixture obtained according to (iv) in an epoxidation zone in contact with an epoxidation catalyst comprising a zeolitic material having a framework structure comprising Si, O, and Ti under epoxidation reaction conditions, thereby obtaining in the epoxidation zone a mixture comprising propylene oxide, methanol and water; wherein the period of time between t1 and t2 are at least 8 seconds. In a fourth aspect, the invention relates to propylene oxide, obtained or obtainable from the method according to the third aspect.

    H2O2 WITHOUT DIBC FOR PO PRODUCTION
    9.
    发明公开
    H2O2 WITHOUT DIBC FOR PO PRODUCTION 审中-公开

    公开(公告)号：US20230145404A1

    公开(公告)日：2023-05-11

    申请号：US17911673

    申请日：2021-03-22

    申请人： BASF SE ,  Dow Global Technologies LLC

    发明人： Dominic RIEDEL ,  Joaquim Henrique TELES ,  Jaroslaw Michael MORMUL ,  Andrei-Nicolae PARVULESCU ,  Meinolf WEIDENBACH ,  Franciscus Johannes Robertus VAN NEER

    IPC分类号： C07D301/12

    CPC分类号： C07D301/12

    摘要： The invention relates in a first aspect to a process for the preparation of propylene oxide, comprising: (i) providing a reaction mixture comprising propylene, water, organic solvent, and hydrogen peroxide; (ii) contacting the reaction mixture provided in (i) in an epoxidation zone with an epoxidation catalyst comprising a zeolitic material having a framework structure comprising Si, O, and Ti, and subjecting the reaction mixture to epoxidation reaction conditions in the epoxidation zone, obtaining, in the epoxidation zone, a mixture comprising propylene oxide, water, and organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, water, and organic solvent; wherein the reaction mixture provided in (i) and subjected to (ii) contains in an amount of at most 500 mg per kg hydrogen peroxide comprised in said reaction mixture at least one aliphatic oxygen containing compound having 8 to 10 carbon atoms. The invention further relates in a second aspect to a reaction mixture for preparing propylene oxide, comprising propylene, water, organic solvent, and hydrogen peroxide, wherein the reaction mixture comprises at least one aliphatic oxygen containing compound having 8 to 10 carbon atoms in an amount of at most 500 mg per kg hydrogen peroxide comprised in the reaction mixture. In a third aspect, the invention relates to a system comprising an epoxidation catalyst comprising a zeolitic material having a framework structure comprising Si, O, and Ti, and further comprising the reaction mixture comprising propylene, water, and organic solvent according to the second aspect. In a fourth aspect, the invention relates to the use of an aqueous hydrogen peroxide solution as epoxidation agent for preparing propylene oxide in the presence of an organic solvent and an epoxidation catalyst comprising a zeolitic material having a framework structure comprising Si, O, and Ti, wherein the aqueous hydrogen peroxide solution comprises at least one aliphatic oxygen containing compound having 8 to 10 carbon atoms in an amount of at most 500 mg per kg hydrogen peroxide comprised in the aqueous hydrogen peroxide solution.