Method for reduction of potassium in an integrated process for the production of 2,6—NDA
    4.
    发明授权
    Method for reduction of potassium in an integrated process for the production of 2,6—NDA 失效
    在生产2,6-NDA的综合过程中还原钾的方法

    公开(公告)号:US06426430B1

    公开(公告)日:2002-07-30

    申请号:US09643355

    申请日:2000-08-22

    IPC分类号: C07C51347

    摘要: Disclosed is a method for reducing alkali metals in aromatic dicarboxylic acids produced by disproportionation or rearrangement of an alkali salt of a mono- or dicarboxylic acid to levels acceptable for polymerization which comprises: a) Washing the aromatic dicarboxylic acid with water in a ratio of about 5:1 water to acid at a temperature of about 70-200° C.; b) Introducing the washed aromatic dicarboxylic acid into a reactor characterized by minimal backmixing, such as a pipe reactor, and reacting the washed aromatic dicarboxylic acid in the pipe reactor at about 100-200° C.; c) Directing the aromatic dicarboxylic acid exiting the pipe reactor to a centrifuge to separate the solid aromatic dicarboxylic acid from water containing contaminants; d) Optionally, combining the solid aromatic dicarboxylic acid again with water in a ratio of about 5:1 at a temperature of about 100-200° C. to further reduce levels of alkali metals.

    摘要翻译: 公开了一种通过将单羧酸或二羧酸的碱金属盐的歧化或重排生成的芳族二羧酸中的碱金属还原为聚合可接受的水平的方法,该方法包括:a)以约1:1的比例用水洗涤芳族二羧酸 5:1的水在约70-200℃的温度下酸化; b)将经洗涤的芳族二羧酸引入反应器,其特征在于最小的回混,例如管式反应器,并将经洗涤的芳族二羧酸在管道 反应器在约100-200℃; c)使离开管式反应器的芳族二羧酸定向离心机,以将固体芳族二羧酸与含有污染物的水分离; d)任选地,将固体芳族二羧酸再次与水结合 在约100-200℃的温度下约5:1的比例,以进一步降低碱金属的含量。

    Method to produce aromatic dicarboxylic acids using cobalt and zirconium
catalysts
    5.
    发明授权
    Method to produce aromatic dicarboxylic acids using cobalt and zirconium catalysts 失效
    使用钴和锆催化剂生产芳族二羧酸的方法

    公开(公告)号:US06153790A

    公开(公告)日:2000-11-28

    申请号:US201963

    申请日:1998-12-01

    IPC分类号: C07C51/255

    CPC分类号: C07C51/255 Y02P20/582

    摘要: A process to produce terephthalic acid is provided, the process including the steps of: providing a feed stream comprising a dialkyl substituted aromatic and in an organic acid solvent: contacting the feed stream with an oxidant, the oxidant containing at least 50% by volume oxygen and at an oxygen partial pressure of at least 1 psia, at a temperature between about 80.degree. C. and about 130.degree. C., in the presence of a catalyst system comprising zirconium and cobalt, wherein the contacting is done in a stirred tank reactor; removing from the stirred tank reactor a vapor stream comprising the organic acid, water vapor and unreacted oxidant; condensing at least a portion of the organic acid and water from the vapor stream; separating at least a portion of the water from the organic acid back to the stirred tank reactor; returning at least a portion of the condensed organic acid back to the stirred tank reactor; continuously recovering from the stirred tank reactor a product comprising a diacid substituted aromatic; isolating solid crystals of diacid substituted aromatic from the reactor product; and recovering from the solid crystals a diacid substituted aromatic having a purity of preferably at least 97% by weight.

    摘要翻译: 提供了制备对苯二甲酸的方法,该方法包括以下步骤:提供包含二烷基取代的芳族化合物和在有机酸溶剂中的进料流:使进料流与氧化剂接触,氧化剂含有至少50体积%的氧 在约80℃至约130℃的温度下,在包含锆和钴的催化剂体系的存在下,在至少1psia的氧分压下,在搅拌釜反应器中进行接触 ; 从搅拌釜反应器中除去包含有机酸,水蒸汽和未反应的氧化剂的蒸气流; 从蒸气流中冷凝至少一部分有机酸和水; 将至少一部分水与有机酸分离回搅拌釜反应器; 将至少一部分冷凝的有机酸返回到搅拌釜反应器中; 从搅拌釜反应器连续回收包含二酸取代的芳族化合物的产物; 从反应器产物中分离出二酸取代芳族化合物的固体晶体; 并从固体晶体中回收纯度优选至少97重量%的二酸取代芳族化合物。

    Process for preparing an organic hydroperoxide, industrial set-up therefore and process wherein such organic hydroperoxide is used in the preparation of an alkylene oxide
    6.
    发明授权
    Process for preparing an organic hydroperoxide, industrial set-up therefore and process wherein such organic hydroperoxide is used in the preparation of an alkylene oxide 有权
    因此制备有机氢过氧化物的方法,工业装置和其中这种有机氢过氧化物用于制备环氧烷烃

    公开(公告)号:US07863493B2

    公开(公告)日:2011-01-04

    申请号:US11425660

    申请日:2006-06-21

    IPC分类号: C07C15/46

    摘要: A process for preparing an organic hydroperoxide, which process comprises: (a) oxidizing an organic compound to obtain an organic reaction product containing organic hydroperoxide; (b) mixing at least part of the organic reaction product of step (a) with a basic aqueous solution to obtain a mixture of basic aqueous solution and the organic reaction product; (c) separating the mixture of step (b) to obtain a separated organic phase containing organic hydroperoxide, and a separated aqueous phase; (d) mixing at least part of the separated organic phase of step (c) with water to obtain a mixture of an aqueous phase and the organic phase; and (e) separating the mixture of step (d) to obtain a separated organic phase containing organic hydroperoxide, and a separated aqueous phase; in which process the separation to a separated organic phase and a separated aqueous phase in step (e) is carried out with the help of a coalescer containing glass fibers.

    摘要翻译: 一种制备有机氢过氧化物的方法,该方法包括:(a)氧化有机化合物以获得含有机氢过氧化物的有机反应产物; (b)将至少部分步骤(a)的有机反应产物与碱性水溶液混合,得到碱性水溶液和有机反应产物的混合物; (c)分离步骤(b)的混合物以得到分离的含有机氢过氧化物的有机相和分离的水相; (d)将步骤(c)的至少部分分离的有机相与水混合,得到水相和有机相的混合物; 和(e)分离步骤(d)的混合物以获得分离的含有机氢过氧化物的有机相和分离的水相; 在该方法中,在含有玻璃纤维的聚结器的帮助下,分离步骤(e)中分离的有机相和分离的水相。

    Preparation method
    7.
    发明授权
    Preparation method 失效
    制备方法

    公开(公告)号:US06989469B2

    公开(公告)日:2006-01-24

    申请号:US10648072

    申请日:2003-08-26

    IPC分类号: C07C1/00

    CPC分类号: C07C1/24 C07C15/46

    摘要: The invention pertains to a method of preparing styrene or substituted styrene involving (1) converting a mixture containing alkylbenzene hydroperoxide or substituted alkylbenzene hydroperoxide to a mixture containing phenyl alkanol or substituted phenyl alkanol and (2) dehydrating the phenyl alkanol or substituted phenyl alkanol, characterized by oxidizing an alkene to an alkylene oxide in step (1) in the presence of a heterogenous catalyst and dehydrating the phenyl alkanol or substituted phenyl alkanol in step (2) in the presence of a homogenous dehydration catalyst to obtain styrene or substituted styrene.

    摘要翻译: 本发明涉及制备苯乙烯或取代苯乙烯的方法,其涉及(1)将含有烷基苯氢过氧化物或取代的烷基苯氢过氧化物的混合物转化为含有苯基链烷醇或取代的苯基链烷醇的混合物和(2)使苯基链烷醇或取代的苯基链烷醇脱水, 在异种催化剂的存在下,在步骤(1)中将烯烃氧化成烯化氧,并且在步骤(2)中使苯基链烷醇或取代的苯基链烷醇在均相脱水催化剂存在下脱水得到苯乙烯或取代的苯乙烯。

    Process for the purification of industrial waste water from a propylene oxide production process
    9.
    发明授权
    Process for the purification of industrial waste water from a propylene oxide production process 有权
    从环氧丙烷生产过程中净化工业废水的工艺

    公开(公告)号:US06712882B1

    公开(公告)日:2004-03-30

    申请号:US10111643

    申请日:2002-04-26

    IPC分类号: B01D1900

    CPC分类号: C02F1/048 B01D5/009

    摘要: A process for treating waste water from an industrial process for producing propylene oxide, which process involves the steps of: (a) subjecting the waste water to a multi-effect evaporation treatment resulting in a vaporous top fraction and a liquid bottom fraction containing the non-volatile contaminants; and (b) condensing at least part of the vaporous top fraction into a liquid stream which is subject to a stripping treatment resulting in an overhead stream containing volatile waste organic material and purified water as the liquid bottom stream.

    摘要翻译: 一种用于处理来自工业生产环氧丙烷的工艺的废水的方法,该方法包括以下步骤:(a)使废水经受多效蒸发处理,导致蒸气顶部馏分和含有非水溶液的液体底部馏分 挥发性污染物 和(b)将至少部分蒸汽顶部馏分冷凝成液体料流,所述液体料流经过汽提处理,导致含有挥发性有机废物的塔顶馏出物和作为液体底部物流的纯化水。

    Process for preparing organic hydroperoxides
    10.
    发明授权
    Process for preparing organic hydroperoxides 有权
    有机氢过氧化物的制备方法

    公开(公告)号:US06700024B2

    公开(公告)日:2004-03-02

    申请号:US10247075

    申请日:2002-09-19

    IPC分类号: C07C40900

    摘要: A process for preparing organic hydroperoxides, which process comprises: (a) oxidation of an organic compound to obtain reaction product containing organic hydroperoxide, (b) contacting at least part of the organic hydroperoxide containing reaction product with a basic aqueous solution, (c) separating hydrocarbonaceous phase containing organic hydroperoxide from aqueous phase, (d) contacting at least part of the separated hydrocarbonaceous phase containing organic hydroperoxide with an aqueous solution comprising wastewater, and (e) separating the hydrocarbonaceous phase containing organic hydroperoxide from the aqueous phase. The invention further relates to a process for preparing an oxirane compounds with the help of this process, and a to a process for preparing an alkenyl aryl with the help of this process.

    摘要翻译: 一种制备有机氢过氧化物的方法,该方法包括:(a)氧化有机化合物以获得含有机氢过氧化物的反应产物,(b)将至少部分含有机氢过氧化物的反应产物与碱性水溶液接触,(c) 从水相中分离含烃有机氢过氧化物,(d)使至少部分含有机氢过氧化物的分离烃相与含有废水的水溶液接触,(e)从含水相中分离含烃有机氢过氧化物。 借助于该方法,还涉及一种用于制备环氧乙烷化合物的方法,以及涉及通过该方法制备烯基芳基的方法。