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公开(公告)号：US07390919B1
公开(公告)日：2008-06-24
申请号：US11906313
申请日：2007-10-01
IPC分类号： C07C67/48
摘要： Disclosed is a method for removing aldehyde impurities from a methyl acetate supply. The method comprises reacting the methyl acetate supply with a polyol and converting the aldehyde impurities to cyclic acetals. The acetals are subsequently removed from the methyl acetate supply by, e.g., distillation. The purified methyl acetate supply is used for carbonylation to produce acetic acid.
摘要翻译： 公开了从乙酸甲酯供应源中除去醛杂质的方法。 该方法包括使乙酸甲酯供料与多元醇反应，并将醛杂质转化为环缩醛。 然后通过例如蒸馏从乙酸甲酯供应物中除去缩醛。 将纯化的乙酸甲酯供应用于羰基化以产生乙酸。
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公开(公告)号：US08822717B2
公开(公告)日：2014-09-02
申请号：US12953959
申请日：2010-11-24
IPC分类号： C07C67/055 , G01N21/65 , B01J8/24 , B01J23/52 , B01J23/44
CPC分类号： C07C67/055 , B01J8/24 , B01J23/44 , B01J23/52 , B01J2208/00274 , B01J2219/00006 , B01J2219/00202 , B01J2219/0022 , B01J2219/00231 , B01J2219/00238 , G01N21/65 , C07C69/15
摘要： Disclosed is a method for controlling a vinyl acetate production process. The method comprises reacting ethylene, acetic acid, and an oxygen-containing gas in the presence of a catalyst in a reactor to produce vinyl acetate, measuring the concentration of a component involved in or associated with the reaction and/or any of the subsequent steps by Raman spectroscopic analysis, and adjusting the conditions in the reactor or in any of the subsequent steps in response to the measured concentration of the component to achieve a proper control of the reaction or any of the subsequent steps.
摘要翻译： 公开了一种控制乙酸乙烯酯生产方法的方法。 该方法包括在反应器中在催化剂存在下使乙烯，乙酸和含氧气体反应以制备乙酸乙烯酯，测量参与或与反应相关的组分的浓度和/或任何后续步骤 通过拉曼光谱分析，并且响应于测量的组分浓度调节反应器或任何后续步骤中的条件，以实现对反应或任何后续步骤的适当控制。
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3.发明授权Removing hydrocarbon impurities from acetic acid by ionic liquid extraction 有权通过离子液体萃取从乙酸中去除碳氢化合物杂质公开(公告)号：US07812191B2
公开(公告)日：2010-10-12
申请号：US12151554
申请日：2008-05-07
IPC分类号： C07C53/00
摘要： A method for removing hydrocarbon impurities from acetic acid is disclosed. The method comprises extracting acetic acid with a hydrophilic imidazolium salt. The imidazolium salt preferably has the general structure of wherein XΘ is a counter ion and R1, R2, R3, R4, and R5 are independently selected from the group consisting of C1-C6 hydrocarbon substitutes. The method is useful for removing hydrocarbon impurities from the alkane distillation bottoms stream of a methanol carbonylation process.
摘要翻译： 公开了一种从乙酸中除去烃杂质的方法。 该方法包括用亲水咪唑鎓盐萃取乙酸。 咪唑鎓盐优选具有其中XΘ为抗衡离子的一般结构，R 1，R 2，R 3，R 4和R 5独立地选自C 1 -C 6烃取代基。 该方法可用于从甲醇羰基化方法的烷烃蒸馏塔底流中除去烃杂质。
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公开(公告)号：US07345197B1
公开(公告)日：2008-03-18
申请号：US11810167
申请日：2007-06-05
摘要： A method for removing aldehyde impurities from acetic acid is disclosed. The method comprises extracting the aldehyde impurities from a methyl iodide solution such as the decanter heavy phase with a polyol. After the aldehyde impurities are removed, the methyl iodide heavy phase can be recycled to the carbonylation.
摘要翻译： 公开了一种从乙酸中除去醛杂质的方法。 该方法包括用多元醇从甲基碘溶液如沉淀剂重相萃取醛杂质。 除去醛杂质后，可将甲基碘重相循环至羰基化。
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公开(公告)号：US20130345474A1
公开(公告)日：2013-12-26
申请号：US13531987
申请日：2012-06-25
摘要： A process for producing acetic acid includes: obtaining hydrogen iodide in an acetic acid production system; and continually introducing a complexing agent into the system, wherein the complexing agent and hydrogen iodide interact to form a complex.
摘要翻译： 制备乙酸的方法包括：在乙酸生产系统中获得碘化氢; 并且将络合剂持续引入该体系中，其中络合剂和碘化氢相互作用形成络合物。
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公开(公告)号：US08394987B2
公开(公告)日：2013-03-12
申请号：US12802941
申请日：2010-06-17
CPC分类号： C07C51/12 , C07C51/47 , C07C51/487 , C07C53/08
摘要： The invention is a method of removing methyl iodide from an alkane distillation bottoms stream of an acetic acid production process. The method comprises contacting the alkane distillation bottoms stream in the liquid phase with a phosphine or a phosphine-functionalized support, and recovering a treated alkane distillation bottoms stream having a reduced methyl iodide content.
摘要翻译： 本发明是从乙酸生产过程的烷烃蒸馏塔底物流中除去甲基碘的方法。 该方法包括使液相中的烷烃蒸馏塔底物流与膦或膦官能化的载体接触，并回收具有降低的甲基碘含量的经处理的烷烃蒸馏塔底物流。
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公开(公告)号：US20090229966A1
公开(公告)日：2009-09-17
申请号：US12077098
申请日：2008-03-17
IPC分类号： B01D3/34
摘要： A method for removing hydrocarbon impurities from an acetic acid production process is disclosed. The method comprises distilling at least a portion of the heavy organic phase from the decanter of the acetic acid production process into a vapor stream comprising the majority of methyl iodide (i.e., over 50% of the methyl iodide from the heavy organic phase) and a bottoms stream comprising the majority of acetic acid, methyl acetate, methyl iodide and the hydrocarbon impurity (i.e., over 50% of each of the components from the heavy organic phase); extracting the bottoms stream with water, an acetic acid aqueous solution, or with a methanol aqueous solution to form an organic phase comprising the majority of the hydrocarbon impurity (over 50% of the hydrocarbon impurity from the bottom stream) and an aqueous phase comprising the majority of methyl iodide (over 50% of the methyl iodide from the bottoms stream); and recycling the aqueous phase to the carbonylation reaction.
摘要翻译： 公开了一种从乙酸生产过程中除去烃杂质的方法。 该方法包括将至少一部分重质有机相从乙酸生产过程的倾析器中蒸馏成包含大部分甲基碘的蒸气流（即，来自重质有机相的甲基碘的50％以上）和 包括大部分乙酸，乙酸甲酯，甲基碘和烃杂质的底部物流（即，来自重质有机相的每种组分的超过50％）; 用水，乙酸水溶液或甲醇水溶液萃取塔底物流，形成包含大部分烃杂质（超过50％的来自底部物流的烃杂质）的有机相和含有 大多数甲基碘（来自底部物流的甲基碘的50％以上）; 并将水相再循环到羰基化反应中。
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公开(公告)号：US20120130119A1
公开(公告)日：2012-05-24
申请号：US12953959
申请日：2010-11-24
IPC分类号： C07C67/055
CPC分类号： C07C67/055 , B01J8/24 , B01J23/44 , B01J23/52 , B01J2208/00274 , B01J2219/00006 , B01J2219/00202 , B01J2219/0022 , B01J2219/00231 , B01J2219/00238 , G01N21/65 , C07C69/15
摘要： Disclosed is a method for controlling a vinyl acetate production process. The method comprises reacting ethylene, acetic acid, and an oxygen-containing gas in the presence of a catalyst in a reactor to produce vinyl acetate, measuring the concentration of a component involved in or associated with the reaction and/or any of the subsequent steps by Raman spectroscopic analysis, and adjusting the conditions in the reactor or in any of the subsequent steps in response to the measured concentration of the component to achieve a proper control of the reaction or any of the subsequent steps.
摘要翻译： 公开了一种控制乙酸乙烯酯生产方法的方法。 该方法包括在反应器中在催化剂存在下使乙烯，乙酸和含氧气体反应以制备乙酸乙烯酯，测量参与或与反应相关的组分的浓度和/或任何后续步骤 通过拉曼光谱分析，并且响应于测量的组分浓度调节反应器或任何后续步骤中的条件，以实现对反应或任何后续步骤的适当控制。
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公开(公告)号：US20110313193A1
公开(公告)日：2011-12-22
申请号：US12802972
申请日：2010-06-17
摘要： The invention is a method of purifying acetic acid containing 15 to 100 ppb iodide compounds. The method comprises contacting the acetic acid in the liquid phase with a phosphine-functionalized support, and recovering a purified acetic acid product having 10 ppb, or less, iodide compounds.
摘要翻译： 本发明是一种纯化含有15〜100ppb碘化物的乙酸的方法。 该方法包括使液相中的乙酸与膦官能化的载体接触，并回收具有10ppb或更少的碘化物的纯化的乙酸产物。
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公开(公告)号：US08629298B2
公开(公告)日：2014-01-14
申请号：US13037041
申请日：2011-02-28
IPC分类号： C07C51/12
摘要： A method for determining the characteristic of one or more components in a step of an acetic acid production process using Raman spectroscopy. The process includes providing a feed stream comprising multiple components to a separations unit, one of the components being acetic acid, the separations unit separating the feed stream into two or more exit streams having a different composition from one another, and measuring a characteristic of one or more of the components by Raman spectroscopic analysis.
摘要翻译： 一种使用拉曼光谱法测定乙酸生产工艺步骤中一种或多种组分特征的方法。 该方法包括向分离单元提供包含多个组分的进料流，其中一个组分是乙酸，分离单元将进料流分离成具有彼此不同组成的两个或更多个出口流，并测量一个 或更多的组分通过拉曼光谱分析。
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