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    METHOD FOR THE MANUFACTURE OF A POLYHYDROXY-CARBOXYLIC ACID
    1.
    发明公开
    METHOD FOR THE MANUFACTURE OF A POLYHYDROXY-CARBOXYLIC ACID 有权

    公开(公告)号：EP2675799A1

    公开(公告)日：2013-12-25

    申请号：EP11785651.8

    申请日：2011-11-15

    申请人： Sulzer Chemtech AG

    发明人： STEPANSKI, Manfred ,  LOVIAT, François ,  KUSZLIK, Andrzej

    IPC分类号： C07D319/12 ,  C08G63/08 ,  B01D9/00 ,  B01D9/02 ,  B01D9/04

    CPC分类号： C08G63/08 ,  B01D3/10 ,  B01D9/0013 ,  B01D9/0045 ,  B01D19/0036 ,  C07D319/12 ,  C08F124/00 ,  C08G63/78 ,  C08G63/785 ,  C08G63/90 ,  C08L67/04

    摘要： Disclosed is a method to prepare a polylactic acid comprising the steps of performing a ring opening polymerization using a catalyst and either a catalyst killer compound or an endcapping additive to obtain a raw polylactic acid of MW greater than 10,000 g/mol, purifying the raw polylactic acid by removing and separating low boiling compounds comprising lactide and impurities from the raw polylactic acid by devolatization of the low boiling compounds as a gas phase stream, and purifying the lactide from the devolatization and removing the impurities from the gas phase stream of evaporated low boiling compounds by means of crystallization by desublimation from the gas phase, wherein the lactide is purified and the removed impurities include a catalyst residue and a compound containing at least one hydroxyl group such that the purified lactide is then polymerized by feeding it back into the ring opening polymerization. The invention further relates to an apparatus for carrying out the method comprising a polymerization reactor for performing a ring opening polymerization to obtain a raw polylactic acid, a devolatization apparatus for separating low boiling compounds comprising lactide and impurities from a raw polylactic acid, and a crystallization apparatus for purifying a lactide and removing impurities by means of a desublimation and a crystallization in the same crystallization apparatus.

    METHOD FOR THE MANUFACTURE OF A POLYHYDROXY-CARBOXYLIC ACID
    2.
    发明公开
    METHOD FOR THE MANUFACTURE OF A POLYHYDROXY-CARBOXYLIC ACID 有权
    制备聚羟基羧酸的方法

    公开(公告)号：EP2675539A1

    公开(公告)日：2013-12-25

    申请号：EP11784642.8

    申请日：2011-11-15

    申请人： Sulzer Chemtech AG

    发明人： STEPANSKI, Manfred ,  LOVIAT, François ,  KUSZLIK, Andrzej

    IPC分类号： B01D7/00 ,  B01D7/02 ,  B01D9/00 ,  B01D9/02 ,  B01D9/04 ,  C07D319/12 ,  C08G63/08

    CPC分类号： C08G63/08 ,  B01D3/10 ,  B01D9/0013 ,  B01D9/0045 ,  B01D19/0036 ,  C07D319/12 ,  C08F124/00 ,  C08G63/78 ,  C08G63/785 ,  C08G63/90 ,  C08L67/04

    摘要： Disclosed is a method to prepare a polylactic acid comprising the steps of performing a ring opening polymerization using a catalyst and either a catalyst killer compound or an endcapping additive to obtain a raw polylactic acid of MW greater than 10,000 g/mol, purifying the raw polylactic acid by removing and separating low boiling compounds comprising lactide and impurities from the raw polylactic acid by devolatization of the low boiling compounds as a gas phase stream, and purifying the lactide from the devolatization and removing the impurities from the gas phase stream of evaporated low boiling compounds by means of crystallization by desublimation from the gas phase, wherein the lactide is purified and the removed impurities include a catalyst residue and a compound containing at least one hydroxyl group such that the purified lactide is then polymerized by feeding it back into the ring opening polymerization. The invention further relates to an apparatus for carrying out the method comprising a polymerization reactor for performing a ring opening polymerization to obtain a raw polylactic acid, a devolatization apparatus for separating low boiling compounds comprising lactide and impurities from a raw polylactic acid, and a crystallization apparatus for purifying a lactide and removing impurities by means of a desublimation and a crystallization in the same crystallization apparatus.

    摘要翻译： 公开了一种制备聚乳酸的方法，其包括使用催化剂和催化剂抑制剂化合物或封端添加剂进行开环聚合以获得MW大于10,000g / mol的原料聚乳酸，纯化原料聚乳酸 通过将低沸点化合物作为气相物流脱挥发分，从原料聚乳酸中除去和分离包含丙交酯和杂质的低沸点化合物，并将该丙交酯从脱挥发分中纯化并从蒸发的低沸点气相物流中除去杂质 化合物通过从气相中通过凝结而结晶，其中丙交酯被纯化并且被除去的杂质包括催化剂残余物和含有至少一个羟基的化合物，使得然后通过将纯化的丙交酯供给回开环 聚合。 本发明还涉及一种用于实施该方法的设备，该设备包括用于进行开环聚合以获得聚乳酸原料的聚合反应器，用于从原料聚乳酸中分离包含丙交酯和杂质的低沸点化合物的脱挥发分装置， 通过在相同的结晶装置中进行凝华和结晶来纯化丙交酯并除去杂质的设备。

    METHOD FOR PURIFICATION OF BENZOIC ACID
    3.
    发明公开
    METHOD FOR PURIFICATION OF BENZOIC ACID 审中-公开
    VERFAHREN ZUR REINIGUNG VONBENZOESÄURE

    公开(公告)号：EP3148661A1

    公开(公告)日：2017-04-05

    申请号：EP15724266.0

    申请日：2015-05-20

    申请人： Sulzer Chemtech AG

    发明人： FAESSLER, Peter ,  STEPANSKI, Manfred

    IPC分类号： B01D3/14 ,  C07C51/44 ,  C07C63/06 ,  C07C51/265

    CPC分类号： C07C51/44 ,  B01D3/141 ,  B01D3/143 ,  B01D9/0059 ,  B01J19/24 ,  B01J2219/24 ,  C07C51/265 ,  C07C51/43 ,  C07C63/06

    摘要： The present invention relates to a method for purifying a crude benzoic acid (32) by means of distillation, wherein the distillation is performed in a plant comprising a first distillation system (54), which comprises a divided wall column (10). Preferably, the divided wall column (10) comprises: - an upper portion having an upper undivided section (12) for concentrating low-boiling components, wherein the low-boiling components have a lower boiling point than benzoic acid, and an outlet for removal of the low-boiling components from the column (10), - a lower portion having a lower undivided section (14) for concentrating high-boiling components, wherein the high-boiling components have a higher boiling point than benzoic acid, and an outlet for removal of the high-boiling components from the column (10), and - a central portion arranged between the upper portion and the lower portion having at least one vertical dividing wall (20) for dividing the central portion into at least one feed section (16) and at least one withdrawal section (18), the feed section (16) having an inlet for the feed of crude benzoic acid (32) and the withdrawal section having a side draw outlet for the purified benzoic acid (34).

    摘要翻译： 本发明涉及一种通过蒸馏纯化粗苯甲酸（32）的方法，其中蒸馏在包括分隔壁塔（10）的第一蒸馏系统（54）的设备中进行。 优选地，分隔壁塔（10）包括： - 具有用于浓缩低沸点组分的上部未分隔部分（12）的上部，其中低沸点组分具有比苯甲酸更低的沸点和用于除去的出口 的塔（10）的低沸点组分， - 具有用于浓缩高沸点组分的较低不分段（14）的下部，其中高沸点组分的沸点高于苯甲酸，和出口 用于从塔（10）中去除高沸点组分，以及 - 布置在上部和下部之间的中心部分，其具有至少一个垂直分隔壁（20），用于将中心部分分成至少一个进料部分 （16）和至少一个抽出部分（18），所述进料部分（16）具有用于进料粗苯甲酸（32）的入口，并且所述抽出部分具有用于纯化的苯甲酸（34）的侧馏出物。

    PROCESS AND APPARATUS FOR PURIFICATION OF A STREAM CONTAINING A CYCLIC ESTER OF AN ALPHA-HYDROXYCARBOXYLIC ACID
    6.
    发明公开
    PROCESS AND APPARATUS FOR PURIFICATION OF A STREAM CONTAINING A CYCLIC ESTER OF AN ALPHA-HYDROXYCARBOXYLIC ACID 有权
    方法和设备清洗流与α-羟基的循环酯

    公开(公告)号：EP2969092A1

    公开(公告)日：2016-01-20

    申请号：EP14702844.3

    申请日：2014-02-04

    申请人： Sulzer Chemtech AG ,  Futerro S.A.

    发明人： STEPANSKI, Manfred ,  FÄSSLER, Peter ,  COSZACH, Philippe

    IPC分类号： B01D7/02 ,  C07D319/12 ,  C08G63/08

    CPC分类号： B01D3/14 ,  B01D1/065 ,  B01D3/02 ,  B01D3/143 ,  B01D3/148 ,  B01D9/0031 ,  B01D9/004 ,  B01D2009/0086 ,  C07D319/12

    摘要： The invention relates to a process for purification of a stream containing a cyclic ester of an alpha-hydroxycarboxylic acid of formula (I) wherein each R independently represents hydrogen or an aliphatic hydrocarbon having 1 to 6 carbon atoms comprising the steps of: (a) separating the cyclic ester-containing stream into one or more cyclic ester-containing vapour fractions and one or more cyclic ester-containing liquid fractions; (b) condensing a cyclic ester-containing vaporized fraction as obtained in step (a) to obtain a cyclic ester-containing condensate; (c) subjecting at least part of the cyclic ester-containing condensate as obtained in step (b) to melt crystallization to obtain a purified cyclic ester-containing stream and a residue stream; and (d) recovering the purified cyclic ester-containing stream as obtained in step (c). The invention further relates to an apparatus suitable for carrying out the present process.

    摘要翻译： 本发明涉及含有式（I）的α-羟基羧酸的环状酯流的提纯方法worin每个R具有1至6个碳原子，包括以下步骤unabhängigdarstellt氢或脂族烃：（1） 所述含环酯料流分离成一个或多个含环酯馏分蒸气和一个或多个含环酯液体馏分; （B）冷凝蒸发的含环酯馏分而获得在步骤（a），以获得一个含环酯的冷凝液; （C）对所述含环酯的冷凝液的至少一部分作为步骤（b）中获得的熔融结晶化，得到纯化含环酯料流和残留物料流; 和（d）回收纯化含环酯料流在步骤（c）中获得。 本发明还涉及到一种适用于实施本发明的方法装置。

    SEMI-CONTINUOUS CRYSTALLIZATION METHOD AND APPARATUS
    8.
    发明公开
    SEMI-CONTINUOUS CRYSTALLIZATION METHOD AND APPARATUS 审中-公开
    半连续结晶方法和装置

    公开(公告)号：EP3313545A1

    公开(公告)日：2018-05-02

    申请号：EP16733006.7

    申请日：2016-06-16

    申请人： Sulzer Chemtech AG

    发明人： PFEIL, Mathias ,  STEPANSKI, Manfred

    IPC分类号： B01D9/00 ,  C07B63/00 ,  C07C7/14 ,  C07C51/43

    CPC分类号： C07B63/00 ,  B01D9/0013 ,  B01D9/004 ,  B01D2009/0086 ,  C07C7/14 ,  C07C51/43 ,  C07C15/08 ,  C07C15/02 ,  C07C59/08

    摘要： A process for the separation of a substance from a liquid feed mixture and for the purification of the substance by fractional layer crystallization, wherein the liquid feed mixture comprises the substance to be separated and purified in a concentration of less than 70 % by weight, which comprises the subsequent steps in the given order: (a) feeding the liquid feed mixture into a crystallization zone, in which at least one surface is provided, so that at least a part of the surface contacts the liquid feed mixture, (b) cooling the at least one surface of the crystallization zone to a temperature below the equilibrium freezing temperature of the liquid feed mixture so that a crystal layer enriched in the substance to be separated and purified is deposited on the at least one cooled surface, whereby a mother liquid having a lower concentration of the substance to be separated and purified than the liquid feed mixture is formed from the liquid feed mixture, (c) removing at least a portion of the mother liquid from the crystallization zone, (d) adding a further portion of liquid feed mixture into the crystallization zone, (e) allowing further deposition of a crystal layer enriched in the substance to be separated and purified to take place on the at least one cooled surface, (f) optionally carrying out a sweating stage and removing a sweating residue and (g) melting the crystal layer to obtain the separated and purified substance.

    APPARATUS AND PROCESS FOR DESALINATION OF WATER
    9.
    发明公开
    APPARATUS AND PROCESS FOR DESALINATION OF WATER 有权
    系统和方法淡化水，以及使用该系统的

    公开(公告)号：EP2861536A1

    公开(公告)日：2015-04-22

    申请号：EP13704590.2

    申请日：2013-02-13

    申请人： Sulzer Chemtech AG

    发明人： DETTE, Severine ,  AHMAD, Mansour M.M ,  STEPANSKI, Manfred

    IPC分类号： C02F1/44 ,  C02F1/22

    CPC分类号： C02F1/441 ,  B01D61/08 ,  C02F1/008 ,  C02F1/22 ,  C02F2101/10 ,  C02F2103/08 ,  C02F2103/10 ,  C02F2209/001 ,  C02F2209/02 ,  C02F2209/05 ,  C02F2303/10 ,  C02F2303/20 ,  C02F2303/22 ,  Y02A20/131 ,  Y02A20/132 ,  Y02W10/30 ,  Y02W10/37

    摘要： A process for desalinating water is disclosed. The process comprises the steps of passing a feed stream of saline solution 2′ in a first desalination step through a reverse osmosis membrane desalination plant 3′ comprising at least one reverse osmosis desalination unit 4′ to form a first product water stream 5′ having a reduced salt concentration relative to that of the feed stream of saline solution 2′ and a first byproduct stream 6′ having an increased salt concentration relative to that of the feed stream of saline solution 2′ characterized in that the first byproduct stream 6′ is passed in a second desalination step through a suspension crystallization unit 7 to form a second product water stream 8 having a reduced salt concentration relative to that of the first byproduct stream 6′ and a second byproduct stream 9 having an increased salt concentration relative to that of the first byproduct stream 6′. The invention further relates to an apparatus 1 for carrying out said process. The present invention further relates also to the use of the process or apparatus 1 for the reduction of the volume of the first byproduct stream of a reverse osmosis membrane desalination plant 3′, preferably an in-land desalination plant 3′, or in a device or plant or process for producing desalinated water, for salt production, for co-production of power and desalinated water, or for air conditioning.

    摘要翻译： 一种用于水脱盐过程游离缺失盘。 该过程包括使盐溶液2的进料流“在第一脱盐步骤通过反渗透膜脱盐厂3”，其包括至少一个反渗透脱盐单元4的步骤“以形成第一产物水流5”具有 盐浓度相对降低至没有的盐溶液2的进料流“和第一副产物流6”具有在盐浓度相对增加到做“中做的第一副产物流6为特征的”盐溶液2的进料流中的被传递 在通过悬浮结晶单元7的第二脱盐步骤，以形成具有含在盐浓度相对增大到做的降低盐浓度相对于所做的第一副产物流6“和第二副产物流9的一个第二产物水流8 第一副产物流6”。 本发明还涉及到上装置1执行所述过程。 本发明还因此涉及在使用过程或设备1的用于反渗透膜脱盐设备3的第一副产物流的体积的减少”，优选地在国海水淡化厂3' ，或在一个设备 或规划或用于生产脱盐水，盐的生产，用于共同生产功率和脱盐水，或用于空气调节的过程。