公开(公告)号：US20180021692A1

公开(公告)日：2018-01-25

申请号：US15553761

申请日：2016-02-23

申请人： SABIC Global Technologies B.V.

发明人： Roland Schmidt ,  Sebastiano Licciulli ,  Shahid Azam

IPC分类号： B01D3/00 ,  C07C51/487 ,  C07C53/08 ,  B01D5/00

摘要： A process of purifying acetic acid is provided. The process includes feeding a stream of acetic acid into a distillation column and distilling acetic acid in the presence of an oxidizing agent in the distillation column, to oxidize oxidizable impurities in the acetic acid, wherein the oxidizing agent is an oxidant capable of cleaving C═C bonds. The process further includes removing a distilled acetic acid stream from the distillation column. Further processes for purifying acetic acid and systems for purifying acetic acid are also provided.

公开(公告)号：US09688600B2

公开(公告)日：2017-06-27

申请号：US14941008

申请日：2015-11-13

申请人： CELANESE INTERNATIONAL CORPORATION

发明人： Yaw-Hwa Liu ,  Mark O. Scates

IPC分类号： C07C51/12 ,  C07C51/47 ,  C07C51/44 ,  B01J31/40 ,  C07C51/487

CPC分类号： C07C51/12 ,  B01J31/4046 ,  C07C51/44 ,  C07C51/47 ,  C07C51/487 ,  C07C53/08

摘要： In a process for improving a carbonylation process, iron is removed to maintain an effective Space Time Yield (STY) of the rhodium catalyst of at least 80% of the maximum STY. The process comprises carbonylating methanol in a reactor in a reaction medium comprising water, a rhodium catalyst, methyl iodide and a halide salt, separating a portion of the reaction medium in a flash vessel to form a less volatile stream and a vapor product stream comprising acetic acid, recycling a liquid stream to the reactor, wherein the liquid stream comprises a portion of the less volatile stream and wherein the liquid stream comprises iron, and removing a portion of the iron from the liquid stream to maintain an effective STY of the rhodium catalyst of at least 80% of the maximum STY.

公开(公告)号：US09573821B2

公开(公告)日：2017-02-21

申请号：US15244095

申请日：2016-08-23

申请人： Cabot Corporation

发明人： Bart F. Bakke

IPC分类号： C01D17/00 ,  C07C51/02 ,  C07C51/43 ,  C22B26/10 ,  C09K8/05 ,  C07C51/487 ,  C22B3/44 ,  C01D5/06 ,  C22B3/46

CPC分类号： C01D17/003 ,  C01D5/06 ,  C01D17/00 ,  C07C51/02 ,  C07C51/43 ,  C07C51/487 ,  C09K8/05 ,  C09K2208/00 ,  C22B3/44 ,  C22B3/46 ,  C22B26/10 ,  C07C53/06

摘要： Methods to recover or separate cesium formate or rubidium formate or both from a mixed alkali metal formate blend are described. One method involves adding cesium sulfate or rubidium sulfate to the mixed alkali metal formate blend in order to preferentially precipitate potassium sulfate from the mixed alkali metal formate blend. Another method involves adding cesium carbonate or cesium bicarbonate or both to preferentially precipitate potassium carbonate/bicarbonate and/or other non-cesium or non-rubidium metals from the mixed alkali metal blend. Further optional steps are also described. Still one other method involves converting cesium sulfate to cesium hydroxide.

摘要翻译： 描述了从混合的碱金属甲酸盐混合物中回收或分离甲酸甲酯或甲酸铷或两者的方法。 一种方法包括向混合的碱金属甲酸盐混合物中加入硫酸铯或硫酸铷以优先从混合的碱金属甲酸盐混合物中沉淀出硫酸钾。 另一种方法包括加入碳酸铯或碳酸氢铯或两者以从混合的碱金属共混物中优先沉淀碳酸钾/碳酸氢盐和/或其它非铯或非铷金属。 还描述了另外的可选步骤。 还有一种其他方法涉及将硫酸铯转化为氢氧化铯。

公开(公告)号：US09452966B2

公开(公告)日：2016-09-27

申请号：US14549926

申请日：2014-11-21

申请人： Cabot Corporation

发明人： Bart F. Bakke

IPC分类号： C07C51/02 ,  C07C51/43 ,  C22B26/10 ,  C22B3/44 ,  C01D17/00 ,  C09K8/05 ,  C07C51/487 ,  C01D5/06

CPC分类号： C01D17/003 ,  C01D5/06 ,  C01D17/00 ,  C07C51/02 ,  C07C51/43 ,  C07C51/487 ,  C09K8/05 ,  C09K2208/00 ,  C22B3/44 ,  C22B3/46 ,  C22B26/10 ,  C07C53/06

摘要： Methods to recover or separate cesium formate or rubidium formate or both from a mixed alkali metal formate blend are described. One method involves adding cesium sulfate or rubidium sulfate to the mixed alkali metal formate blend in order to preferentially precipitate potassium sulfate from the mixed alkali metal formate blend. Another method involves adding cesium carbonate or cesium bicarbonate or both to preferentially precipitate potassium carbonate/bicarbonate and/or other non-cesium or non-rubidium metals from the mixed alkali metal blend. Further optional steps are also described. Still one other method involves converting cesium sulfate to cesium hydroxide.

摘要翻译： 描述了从混合的碱金属甲酸盐混合物中回收或分离甲酸甲酯或甲酸铷或两者的方法。 一种方法包括向混合的碱金属甲酸盐混合物中加入硫酸铯或硫酸铷以优先从混合的碱金属甲酸盐混合物中沉淀出硫酸钾。 另一种方法包括加入碳酸铯或碳酸氢铯或两者以从混合的碱金属共混物中优先沉淀碳酸钾/碳酸氢盐和/或其它非铯或非铷金属。 还描述了另外的可选步骤。 还有一种其他方法涉及将硫酸铯转化为氢氧化铯。

公开(公告)号：US20150368138A1

公开(公告)日：2015-12-24

申请号：US14765256

申请日：2014-01-31

申请人： CENTRO DE INVESTIGACIÓN EN ALIMENTACIÓN Y DESARROLLO, A.C.

发明人： Ali Jesus ASAFF TORRES ,  Maria Yolanda REYES VIDAL

IPC分类号： C02F9/00 ,  C09K3/00 ,  C02F1/44 ,  C02F3/34 ,  C02F1/52 ,  C07C51/487 ,  C07C51/42

CPC分类号： C02F9/00 ,  C02F1/24 ,  C02F1/385 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/52 ,  C02F1/5263 ,  C02F1/56 ,  C02F1/66 ,  C02F3/28 ,  C02F3/342 ,  C02F2001/007 ,  C02F2101/30 ,  C02F2101/345 ,  C02F2103/32 ,  C02F2301/106 ,  C07C51/42 ,  C07C51/487 ,  C09K3/00

摘要： A novel integral process for the treatment of wastewater, commonly known as nejayote, from the nixtamal, masa and tortilla industry, having an improved method for removing the insoluble fraction and a filtration system for separating and concentrating the fractions forming the nejayote. The method includes the steps of: (a) neutralizing the nejayote; (b) enzymatically hydrolysing the starch granules; (c) flocculating and separating the insoluble fraction. The system includes the steps of (a) microfiltration; (b) ultrafiltration for concentrating long-chain carbohydrates; (c) ultra/nano filtration for concentrating medium-size compounds; (d) nanofiltration/reverse osmosis for concentrating small molecules and obtaining water of sufficient quality that it can be re-used or safely discharged into the environment. In one embodiment of the invention, in order to remove unwanted phenolic compounds, the process includes a method including the steps of: (a) acidifying the effluents at pH

摘要翻译： 用于处理来自尼泊尔马克，马萨和玉米饼业的废水（通常称为nejayote）的新颖的整体方法，具有用于除去不溶性馏分的改进方法和用于分离和浓缩形成新泽西的级分的过滤系统。 该方法包括以下步骤：（a）中和nejayote; （b）酶促水解淀粉颗粒; （c）絮凝和分离不溶性部分。 该系统包括以下步骤：（a）微滤; （b）超滤用于浓缩长链碳水化合物; （c）用于浓缩中等大小的化合物的超/纳滤; （d）纳米过滤/反渗透，用于浓缩小分子，并获得足够质量的水，使其可以重新使用或安全地排放到环境中。 在本发明的一个实施方案中，为了除去不需要的酚类化合物，该方法包括一种方法，包括以下步骤：（a）在pH <4时酸化流出物; （b）絮凝和分离不需要的不溶性部分。

公开(公告)号：US20150183713A1

公开(公告)日：2015-07-02

申请号：US14585520

申请日：2014-12-30

申请人： BP Corporation North America Inc.

发明人： Thomas M. Bartos

IPC分类号： C07C51/487 ,  C07C51/42 ,  C07C51/265

CPC分类号： C07C51/487 ,  C07C51/265 ,  C07C51/42 ,  C07C63/26

摘要： Processes for manufacturing purified aromatic carboxylic acids include: oxidizing a substituted aromatic compound in a reaction zone to form a crude aromatic carboxylic add; transferring a vapor phase from the reaction zone to a separation zone, the vapor phase containing water and a plurality of organic compounds including at least one oxidation by-product; withdrawing an organic-depleted water stream from the separation zone and combining at least a portion of the organic-depleted water stream with at least a portion of the crude aromatic carboxylic acid in a purification zone; and purifying the crude aromatic carboxylic acid in the purification zone.

摘要翻译： 用于制备纯化芳族羧酸的方法包括：在反应区中氧化取代的芳族化合物以形成粗芳族羧酸; 将气相从反应区转移到分离区，所述气相含有水和多种包含至少一种氧化副产物的有机化合物; 从分离区抽出有机贫乏的水流，并将至少一部分有机贫乏水流与至少一部分粗芳族羧酸在纯化区中合并; 并纯化纯化区中的粗芳香族羧酸。

公开(公告)号：US20150183705A1

公开(公告)日：2015-07-02

申请号：US14586085

申请日：2014-12-30

申请人： BP Corporation North America Inc.

发明人： Peter Metelski

IPC分类号： C07C51/285 ,  C07C51/487 ,  C07C51/265

CPC分类号： C07C51/487 ,  C07C51/265 ,  C07C51/42 ,  C07C51/43 ,  C07C63/26

摘要： A process including: (a) contacting an aqueous solution including a crude aromatic carboxylic acid with an oxygen source in the presence of an oxidation catalyst including at least one of Ru, Au, Pt, Ir or V, and oxides, alloys, salts and mixtures thereof; and (b) purifying the product of step (a) to form a purified aromatic carboxylic acid.

摘要翻译： 一种方法，包括：（a）在包含Ru，Au，Pt，Ir或V中的至少一种的氧化催化剂的存在下，将包含粗芳族羧酸的水溶液与氧源接触，以及氧化物，合金，盐和 其混合物; 和（b）纯化步骤（a）的产物以形成纯化的芳族羧酸。

公开(公告)号：US20140148615A1

公开(公告)日：2014-05-29

申请号：US13880286

申请日：2011-10-17

申请人： Dan W. Verser ,  Gal Mariansky ,  Kevin Carlin ,  Erik Gallegos-Westling ,  Jesse James Coutu ,  Timothy J. Eggeman

发明人： Dan W. Verser ,  Gal Mariansky ,  Kevin Carlin ,  Erik Gallegos-Westling ,  Jesse James Coutu ,  Timothy J. Eggeman

IPC分类号： C07C51/487 ,  C07C67/08

CPC分类号： C07C51/487 ,  C07C51/412 ,  C07C51/48 ,  C07C67/08 ,  Y02P20/127 ,  C07C53/10 ,  C07C53/06 ,  C07C53/122 ,  C07C53/124 ,  C07C59/265 ,  C07C59/01 ,  C07C59/06

摘要： A method is disclosed for the recovery of an organic acid from a dilute salt solution in which the cation of the salt forms an insoluble carbonate salt. An amine, C02 and a water immiscible solvent are introduced to the solution to form the insoluble carbonate salt and a complex between the acid and the amine that is soluble in both an aqueous and a solvent phase. The complex is extracted into the solvent phase which is than distilled to recover the acid or an ester of the acid in a concentrated form.

摘要翻译： 公开了从其中盐的阳离子形成不溶性碳酸盐的稀盐溶液中回收有机酸的方法。 将胺，CO 2和与水不混溶的溶剂引入该溶液中以形成不溶性碳酸盐和在水相和溶剂相中可溶于酸和胺之间的络合物。 将络合物萃取到溶剂相中，其被蒸馏以回收浓缩形式的酸或酸的酯。

公开(公告)号：US20130225860A1

公开(公告)日：2013-08-29

申请号：US13881313

申请日：2010-10-28

申请人： Takeshi Namekata ,  Ikuo Ito

发明人： Takeshi Namekata ,  Ikuo Ito

IPC分类号： C07C51/487

CPC分类号： C07C51/487 ,  C07C51/02 ,  C07C51/412 ,  C07C51/43 ,  C07C63/72

摘要： The present invention provides a method, as a means for industrially producing a refined 6-bromo-2-naphthalenecarboxylic acid product from a crude 6-bromo-2-naphthalenecarboxylic acid product, comprising: causing the above crude product to react with sodium hydroxide in water to precipitate a sodium salt of 6-bromo-2-naphthalenecarboxylic acid; performing recrystallization treatment for the obtained precipitate; causing the obtained crystal to react with acid in water to precipitate 6-bromo-2-naphthalenecarboxylic acid; and recovering the obtained precipitate.

摘要翻译： 本发明提供作为从6-溴-2-萘甲酸粗产物工业生产精制的6-溴-2-萘甲酸产物的方法，该方法包括：使上述粗产物与氢氧化钠反应 水以沉淀6-溴-2-萘甲酸的钠盐; 对所得沉淀进行重结晶处理; 使所得晶体与酸在水中反应以沉淀6-溴-2-萘甲酸; 并回收得到的沉淀物。

公开(公告)号：US20130150602A1

公开(公告)日：2013-06-13

申请号：US13574634

申请日：2011-01-27

申请人： Adam Kelliher ,  Angus Morrison ,  Phil Knowles

发明人： Adam Kelliher ,  Angus Morrison ,  Phil Knowles

IPC分类号： C07C51/487 ,  C07C51/38

CPC分类号： C07C51/487 ,  C07C51/38 ,  C07C51/41 ,  C07C51/412 ,  C07C51/42 ,  C07C51/48 ,  C07C53/126 ,  C07C57/02

摘要： There is provided a process for purifying a fatty acid, which process comprises reacting a fatty acid with a lithium salt in a first solution and under conditions to allow formation of a precipitate of a lithium salt of the fatty acid; isolating the precipitate; dissolving the precipitate in a second solution followed by separation of the organic and aqueous layers so formed; and evaporating the organic layer to isolate the purified fatty acid. There is also provided a process for increasing the length of a fatty acid, and the use of a lithium salt to purify a fatty acid.

摘要翻译： 提供了一种纯化脂肪酸的方法，该方法包括使第一溶液中的脂肪酸与锂盐反应，并在允许形成脂肪酸的锂盐沉淀物的条件下进行; 分离沉淀物; 将沉淀物溶解在第二溶液中，然后分离如此形成的有机层和水层; 并蒸发有机层以分离纯化的脂肪酸。 还提供了增加脂肪酸长度的方法，以及使用锂盐来纯化脂肪酸的方法。