一种生物基丙二醇的精制方法
    2.
    发明申请

    公开(公告)号:WO2020063425A1

    公开(公告)日:2020-04-02

    申请号:PCT/CN2019/106551

    申请日:2019-09-19

    发明人: 袁一

    IPC分类号: C07C29/82 C07C31/20 B01D3/36

    摘要: 一种精制生物基丙二醇的方法,其中分离了与丙二醇沸点接近的杂质。在该方法中,将C 5 -C 20 亲油醇类化合物,C 5 -C 20 烷烃和/或C 4 -C 20 亲油酮类化合物作为共沸剂与生物基丙二醇进行共沸得到包含丙二醇的共沸物,然后将该共沸物中的共沸剂分离除去获得丙二醇粗品,该丙二醇粗品进一步纯化后获得丙二醇。

    PROCESS FOR THE PURIFICATION OF THE SOLVENT DERIVING FROM THE PRODUCTION OF ELASTOMERIC BLENDS
    3.
    发明申请
    PROCESS FOR THE PURIFICATION OF THE SOLVENT DERIVING FROM THE PRODUCTION OF ELASTOMERIC BLENDS 审中-公开
    纯化弹性混合物生成溶剂的方法

    公开(公告)号:WO2018029716A1

    公开(公告)日:2018-02-15

    申请号:PCT/IT2016/000195

    申请日:2016-08-11

    摘要: Process for the purification of the solvent deriving from the production of an elastomeric blend comprising the following steps: • (a) optionally, subjecting said solvent to a pre-washing (2) in the presence of at least one acid or basic aqueous solution; • (b) feeding said solvent to a liquid-liquid separation column (7); • (c) feeding the stream leaving the head of said liquid-liquid separation column (7) to an azeotropic distillation column (21); • (d) feeding the stream withdrawn laterally (side-withdrawal) from said azeotropic distillation column (21) to an adsorption section (34a/b); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out.

    摘要翻译: (a)任选地使所述溶剂经受预洗涤(2),在存在下述步骤(a)的条件下进行预洗涤(2) 至少一种酸或碱性水溶液; (b)将所述溶剂加入液 - 液分离塔(7); (c)将离开所述液 - 液分离塔(7)的塔顶的物流送入共沸蒸馏塔(21); (d)将从所述共沸蒸馏塔(21)侧向排出(侧取出)的物流送入吸附部分(34a / b); 所述方法允许获得具有质量适合于被无差别地和同时使用在各种类型的弹性体的生产厂的(共)聚合物,聚合物级溶剂即在植物中,其中的阴离子(共)聚合是在植物中进行的,并且也 其中进行齐格勒 - 纳塔(共)聚合。

    MÉTODO PARA LA SEPARACIÓN DE MEZCLAS QUÍMICAS AZEOTRÓPICAS MEDIANTE ADICIÓN DE NANOPARTÍCULAS
    4.
    发明申请
    MÉTODO PARA LA SEPARACIÓN DE MEZCLAS QUÍMICAS AZEOTRÓPICAS MEDIANTE ADICIÓN DE NANOPARTÍCULAS 审中-公开
    添加纳米粒子分离纳米复合化学混合物的方法

    公开(公告)号:WO2017122065A1

    公开(公告)日:2017-07-20

    申请号:PCT/IB2016/057015

    申请日:2016-11-21

    IPC分类号: B01D3/34 B01D3/36 B01D3/40

    CPC分类号: B01D3/34 B01D3/36 B01D3/40

    摘要: La presente invención se encuentra relacionada con un método para la separación de mezclas azeotrópicas de al menos dos componentes, mediante la utilización de nanopartículas o nanoestructuras de cerámica. Dichas partículas alteran la distribución de equilibrio del sistema, desplazando el punto azeotrópico y reduciendo las temperaturas de evaporación de la mezcla. El método comprende las etapas de: seleccionar las nanopartículas o nanoestructuras de óxido metálico de acuerdo con su compatibilidad con la mezcla química azeotrópica a ser separada; dispersar las nanopartículas o nanoestructuras de óxido metálico en la mezcla química azeotrópica; adicionar la dispersión a una cámara de separación; separar la mezcla química, obteniendo una corriente de vapor que comprende los productos más volátiles y una corriente líquida que comprende las especies menos volátiles junto con las partículas de óxido metálico; y alternativamente alimentar la corriente líquida a procesos de recuperación de partículas.

    摘要翻译: 本发明涉及一种通过使用纳米颗粒或纳米颗粒的纳米结构来分离至少两种组分的共沸混合物的方法, ;云母。 这些颗粒改变了系统的平衡分布,取代了共沸点并降低了混合物的蒸发温度。 该方法包括以下步骤:根据它们与待分离的化学混合物的相容性选择纳米颗粒或金属纳米结构; 将纳米颗粒或金属纳米结构分散在化学混合物共沸物中; 将分散体加入分离室; 分离化学混合物,获得包含挥发性最高的产物的蒸汽流和包含挥发性较小的物质连同金属物质的上游电流; 或者将电流馈送到粒子回收过程。

    TETRAHYDROFURAN PURGE TREATMENT PROCESS
    5.
    发明申请
    TETRAHYDROFURAN PURGE TREATMENT PROCESS 审中-公开
    四氯化碳净化处理工艺

    公开(公告)号:WO2014007930A1

    公开(公告)日:2014-01-09

    申请号:PCT/US2013/044033

    申请日:2013-06-04

    摘要: The present invention provides a tetrahydrofuran purge stream treatment process, and a process for manufacturing polyether glycol comprising same. The process for treating a tetrahydrofuran stream purged from a polyether glycol manufacturing process comprises steps of neutralizing acidic substances in a tetrahydrofuran stream purged from the polyether glycol manufacturing process with an aqueous base solution, feeding the neutralized effluent to an azeotropic distillation column, and distilling tetrahydrofuran and water overhead from the azeotropic distillation column. The process can further comprise a step of disposing of the neutralized salts and excess base in the aqueous bottoms stream from the azeotropic distillation column. The process can further comprise steps of recovering THF from the overhead of the azeotropic distillation column, and recycling the recovered THF to a polyether glycol manufacturing process.

    摘要翻译: 本发明提供了一种四氢呋喃清洗流处理方法及其制备包含其的聚醚二醇的方法。 用于处理从聚醚二醇制造方法清洗的四氢呋喃流的方法包括以下步骤:用碱水溶液中和从聚醚二醇制造过程中清除的四氢呋喃流中的酸性物质,将中和的流出物进料到共沸蒸馏塔,并蒸馏四氢呋喃 和来自共沸蒸馏塔的塔顶馏出物。 该方法还可以包括在来自共沸蒸馏塔的水性塔底物流中处理中和的盐和过量的碱的步骤。 该方法还可以包括从共沸蒸馏塔的塔顶馏出物回收THF并将回收的THF循环到聚醚二醇制造方法的步骤。

    METHOD FOR RECOVERING ACETIC ACID FROM REACTOR DISCHARGE GAS IN THE OXIDATION PROCESS OF AN AROMATIC COMPOUND
    6.
    发明申请
    METHOD FOR RECOVERING ACETIC ACID FROM REACTOR DISCHARGE GAS IN THE OXIDATION PROCESS OF AN AROMATIC COMPOUND 审中-公开
    在芳香族化合物的氧化过程中从反应器排气中回收乙酸的方法

    公开(公告)号:WO2012115356A3

    公开(公告)日:2012-10-18

    申请号:PCT/KR2012000589

    申请日:2012-01-25

    发明人: KANG KI-JOON

    摘要: The present invention relates to a method for recovering acetic acid from reactor discharge gas in the oxidation process of an aromatic compound. Particularly, when the oxidation process of an aromatic compound is performed, gas discharged from a reactor passes through a general vacuum-distillation tower, an extraction tower, and an azeotropic distillation tower, or an extraction tower and a vacuum azeotropic distillation tower, so as to recover acetic acid and remove water. Thus, low-temperature steam may be used by a vacuum-distillation process, replacing a conventional dehydration tower. Also, when compared to well-known azeotropic distillation processes, the amount of medium steam which is used for separating the water and the acetic acid from each other may be significantly reduced.

    摘要翻译: 本发明涉及在芳族化合物的氧化过程中从反应器排出气体中回收乙酸的方法。 特别是在进行芳香族化合物的氧化处理时,从反应器排出的气体通过通常的减压蒸馏塔,萃取塔,共沸蒸馏塔,萃取塔,真空共沸蒸馏塔等, 回收乙酸并除去水。 因此,低温蒸汽可以通过真空蒸馏过程使用,代替传统的脱水塔。 而且,当与公知的共沸蒸馏方法相比时,用于将水和乙酸彼此分离的介质蒸汽的量可以显着减少。

    PROCESS AND APPARATUS FOR VAPOR PHASE PURIFICATION DURING HYDROCHLORINATION OF MULTI-HYDROXYLATED ALIPHATIC HYDROCARBON COMPOUNDS
    9.
    发明申请
    PROCESS AND APPARATUS FOR VAPOR PHASE PURIFICATION DURING HYDROCHLORINATION OF MULTI-HYDROXYLATED ALIPHATIC HYDROCARBON COMPOUNDS 审中-公开
    多羟基化学烃类化合物氢化过程中蒸汽相纯化的工艺和装置

    公开(公告)号:WO2008128014A1

    公开(公告)日:2008-10-23

    申请号:PCT/US2008/059980

    申请日:2008-04-11

    IPC分类号: C07C29/82 C07C31/42 B01D3/36

    摘要: A process for converting multihydroxylated- aliphatic hydrocarbon compound(s) and/or ester(s) thereof to chlorohydrins and/or esters thereof is disclosed in which one or more of multihydroxylated- aliphatic hydrocarbon compound(s) and/or ester(s) thereof and/or monochlorohydrin(s) and/or ester(s) thereof with at least one chlorinating feed stream comprising at least one chlorinating agent and at least one impurity having a boiling point below the boiling point of the chlorohydrin product having the lowest boiling under hydrochlorination conditions, optionally in the presence of water, one or more catalyst(s), and/or one or more heavy byproduct(s) in a reaction vessel under hydrochlorination conditions, wherein the liquid-phase reaction mixture is maintained at a temperature below the boiling point of the chlorohydrin product having the lowest boiling point under hydrochlorination conditions and greater than the boiling point(s) of the at least one impurity and a vapor phase vent stream comprising the at least one impurity is removed from the liquid phase reaction mixture. An apparatus suitable for carrying out the disclosed process is illustrated in Figure 1 of the drawings. The process and apparatus improve conversion rates and/or provide for recovery of chlorinating agent for lower operating costs.

    摘要翻译: 公开了一种将多羟基化脂族烃化合物和/或其酯转化为氯醇和/或其酯的方法,其中一种或多种多羟基化脂族烃化合物和/或酯, 和/或一氯代醇和/或其酯与至少一种氯化进料流一起包含至少一种氯化剂和至少一种沸点低于具有最低沸点的氯代醇产物的沸点的杂质 在氢氯化条件下,任选地在氢氯化条件下在反应容器中存在水,一种或多种催化剂和/或一种或多种重质副产物,其中将液相反应混合物保持在温度 低于在氢氯化条件下具有最低沸点的氯代醇产物的沸点并且大于至少一种杂质的沸点和气相排出流 包括从液相反应混合物中除去至少一种杂质。 在附图的图1中示出了适用于执行所公开的处理的装置。 该方法和设备提高转化率和/或提供氯化剂的回收以降低运行成本。