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公开(公告)号：US09227899B2
公开(公告)日：2016-01-05
申请号：US13987699
申请日：2013-08-22
CPC分类号： C07C41/44 , C07C41/03 , C07C41/42 , Y02P20/127 , C07C43/13
摘要： Propylene glycol methyl ether is produced by feeding a solution of a basic catalyst in methanol to a catalytic distillation column containing a heterogeneous basic catalyst defining a heterogeneous reaction zone, and feeding propylene oxide to the column. The methanol reacts with the propylene oxide according to a dual homogeneous catalytic reaction and heterogeneous catalytic reaction to form propylene glycol methyl ether, which is removed from the column as a bottoms product. Alternatively, methanol can be reacted with propylene oxide in a pre-reactor, to form propylene glycol methyl ether, and, when the temperature in the pre-reactor reaches about 100° C., the reaction products are transferred to the catalytic distillation column for further reaction.
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公开(公告)号：US08466302B1
公开(公告)日：2013-06-18
申请号：US13332741
申请日：2011-12-21
IPC分类号： C07D301/14
CPC分类号： C07D303/04 , Y02P20/127 , Y02P20/582
摘要： A continuous epoxidation process for the production of high purity propylene oxide by the reaction of propylene with an oxidant that is a per-acid, such as peracetic acid (PAA), in a reactive distillation (RD) column. The RD column provides excellent heat integration and temperature control, and the process has the advantage of lower investment cost for capital equipment. The process operates at mild temperatures and pressures. A ferric acetylacetonate homogeneous catalyst and/or stabilizer may be included as part of the PAA feed to the process to increase PAA conversion and selectivity to propylene oxide. A pre-reactor can be incorporated upstream of the RD column to increase the residence time at lower temperatures to enhance productivity.
摘要翻译： 在反应蒸馏（RD）柱中通过丙烯与过酸例如过乙酸（PAA）的氧化剂反应生产高纯度环氧丙烷的连续环氧化方法。 RD列提供优异的热集成和温度控制，该工艺具有降低资本设备投资成本的优点。 该过程在温和的温度和压力下运行。 乙酰丙酮铁的均匀催化剂和/或稳定剂可以作为PAA进料的一部分包含在该方法中以增加PAA转化率和对环氧丙烷的选择性。 可以在RD塔的上游引入预反应器以增加在较低温度下的停留时间，以提高生产率。
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公开(公告)号：US20130165676A1
公开(公告)日：2013-06-27
申请号：US13332741
申请日：2011-12-21
IPC分类号： C07D301/14
CPC分类号： C07D303/04 , Y02P20/127 , Y02P20/582
摘要： A continuous epoxidation process for the production of high purity propylene oxide by the reaction of propylene with an oxidant that is a per-acid, such as peracetic acid (PAA), in a reactive distillation (RD) column. The RD column provides excellent heat integration and temperature control, and the process has the advantage of lower investment cost for capital equipment. The process operates at mild temperatures and pressures. A ferric acetylacetonate homogeneous catalyst and/or stabilizer may be included as part of the PAA feed to the process to increase PAA conversion and selectivity to propylene oxide. A pre-reactor can be incorporated upsteam of the RD column to increase the residence time at lower temperatures to enhance productivity.
摘要翻译： 在反应蒸馏（RD）柱中通过丙烯与过酸例如过乙酸（PAA）的氧化剂反应生产高纯度环氧丙烷的连续环氧化方法。 RD列提供优异的热集成和温度控制，该工艺具有降低资本设备投资成本的优点。 该过程在温和的温度和压力下运行。 乙酰丙酮铁的均匀催化剂和/或稳定剂可以作为PAA进料的一部分被包括以提高PAA转化率和对环氧丙烷的选择性。 可以将预反应器并入RD塔的上游，以增加在较低温度下的停留时间，以提高生产率。
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公开(公告)号：US20150057468A1
公开(公告)日：2015-02-26
申请号：US13987699
申请日：2013-08-22
IPC分类号： C07C41/44
CPC分类号： C07C41/44 , C07C41/03 , C07C41/42 , Y02P20/127 , C07C43/13
摘要： Propylene glycol methyl ether is produced by feeding a solution of a basic catalyst in methanol to a catalytic distillation column containing a heterogeneous basic catalyst defining a heterogeneous reaction zone, and feeding propylene oxide to the column. The methanol reacts with the propylene oxide according to a dual homogeneous catalytic reaction and heterogeneous catalytic reaction to form propylene glycol methyl ether, which is removed from the column as a bottoms product. Alternatively, methanol can be reacted with propylene oxide in a pre-reactor, to form propylene glycol methyl ether, and, when the temperature in the pre-reactor reaches about 100° C., the reaction products are transferred to the catalytic distillation column for further reaction.
摘要翻译： 通过将碱性催化剂在甲醇中的溶液进料到含有限定非均相反应区的非均相碱性催化剂的催化蒸馏塔中并将环氧丙烷加入到塔中来制备丙二醇甲基醚。 甲醇根据双重均相催化反应和多相催化反应与环氧丙烷反应形成丙二醇甲醚，其作为塔底产物从柱中除去。 或者，甲醇可以在预反应器中与环氧丙烷反应，形成丙二醇甲基醚，并且当预反应器中的温度达到约100℃时，将反应产物转移到催化蒸馏塔 进一步反应。
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公开(公告)号：US20110195342A1
公开(公告)日：2011-08-11
申请号：US12903063
申请日：2010-10-12
申请人： Jing-li Luo , Xian-zhu Fu , Nemanja Danilovic , Karl T. Chuang , Alan R. Sanger
发明人： Jing-li Luo , Xian-zhu Fu , Nemanja Danilovic , Karl T. Chuang , Alan R. Sanger
IPC分类号： H01M8/10
CPC分类号： H01M8/1246 , B01D53/228 , B01D67/0041 , B01D69/12 , B01D69/145 , B01D71/024 , B01D2325/10 , B01J35/065 , B32B18/00 , B82Y30/00 , C01G25/006 , C01P2002/52 , C01P2006/32 , C01P2006/40 , C04B35/50 , C04B35/6262 , C04B35/6267 , C04B38/0645 , C04B2111/00612 , C04B2111/00801 , C04B2111/00853 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3229 , C04B2235/3241 , C04B2235/3244 , C04B2235/3281 , C04B2235/443 , C04B2235/449 , C04B2235/5409 , C04B2235/5454 , C04B2235/616 , C04B2235/6562 , C04B2235/6565 , C04B2235/768 , C04B2235/81 , C04B2237/34 , C04B2237/586 , H01M2300/0074 , H01M2300/0094 , Y02E60/525 , Y02P70/56
摘要： An integral ceramic membrane for a fuel cell is provided, with a non-porous layer and porous layers both formed of proton conducting material. The proton-conducting material may be a compound or mixture of compounds of the formula X1-X2-O3-δ where X1=Ba, Sr or mixtures thereof and X2=Ce, Zr, Y, Nd, Yb, Sm, La, Hf, Pr or mixtures thereof. The combined atomic ratio of Y, Nd, Yb, Sm and La to Ba and Sr may in an embodiment be between 0.1 and 0.3 inclusive.
摘要翻译： 提供了一种用于燃料电池的整体陶瓷膜，其具有由质子传导材料形成的无孔层和多孔层。 质子传导材料可以是X1-X2-O3-δ化合物或其混合物，其中X1 = Ba，Sr或其混合物，X2 = Ce，Zr，Y，Nd，Yb，Sm，La，Hf ，Pr或其混合物。 在一个实施方案中，Y，Nd，Yb，Sm和La与Ba和Sr的组合原子比可以在0.1和0.3之间。
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公开(公告)号：US5338531A
公开(公告)日：1994-08-16
申请号：US823688
申请日：1992-01-21
申请人： Karl T. Chuang , Bing Zhou
发明人： Karl T. Chuang , Bing Zhou
CPC分类号： C01B15/029 , B01J21/18 , B01J23/40 , B01J23/44 , B01J35/0013 , B01J37/0211
摘要： The invention relates to hydrogen peroxide manufacture, and catalyst therefor, by direct oxidation of hydrogen with oxygen in an acidic aqueous medium. The catalyst includes a Group VIII metal on a partially hydrophobic, partially hydrophilic support, such as Pd on fluorinated carbon. Improvements in H.sub.2 O.sub.2 selectivity and catalyst stability are achieved by adding a source of sodium and chloride ions to the reaction medium and, in the case of a fluorinated carbon support, adding a source of fluoride ions.
摘要翻译： 本发明涉及过氧化氢制备及其催化剂，通过在酸性水性介质中用氧直接氧化氢。 该催化剂包括部分疏水部分亲水载体上的第Ⅷ族金属，例如氟化碳上的Pd。 通过向反应介质中加入钠离子和氯离子源，并在氟化碳载体的情况下加入氟离子源，可以实现H2O2选择性和催化剂稳定性的改善。
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公开(公告)号：US20120118154A1
公开(公告)日：2012-05-17
申请号：US12926399
申请日：2010-11-16
申请人： Kuang-Yeu Wu , Adam T. Lee , Lindsey Vuong , Edward K. Liu , Karl T. Chuang
发明人： Kuang-Yeu Wu , Adam T. Lee , Lindsey Vuong , Edward K. Liu , Karl T. Chuang
IPC分类号： B01D19/00
CPC分类号： B01D19/0047 , B01D19/0015 , C02F1/02 , C02F1/20 , C02F1/70 , C02F2103/08 , C02F2209/02 , C02F2209/03 , C02F2209/22 , C02F2209/40 , C02F2301/063 , C02F2301/066 , C02F2303/10 , C02F2303/20 , Y02W10/30
摘要： A process and apparatus is provided for reduction of dissolved oxygen content in seawater from about 8 ppm in the feed seawater to about 10 ppb or less. Significant advantages are achieved by: use of a separator in horizontal alignment to provide high gas-liquid contacting area for separation and de-entrainment within the separator, thereby providing higher throughput; and heating seawater to at least 30° C. and up to 60° C., so as to enhance removal of oxygen from seawater; use of once-through fuel gas as stripping gas and its subsequent combustion for heating the seawater provides for high efficiency and reduction of fouling. The combination of these features allows the amount of residual oxygen in deoxygenated seawater to be reduced to below 10 ppb and as low as 2 ppb.
摘要翻译： 提供了一种方法和装置，用于将海水中的溶解氧含量从进料海水中的约8ppm减少到约10ppb或更少。 通过以下方式实现显着的优点：在水平对准中使用分离器以提供高气液接触面积，用于分离器内的分离和去夹带，从而提供更高的产量; 并将海水加热至至少30℃至高达60℃，以增强海水中的氧气的去除; 使用一次通过的燃料气体作为汽提气体及其随后的用于加热海水的燃烧提供高效率和减少结垢。 这些特征的组合允许脱氧海水中的残余氧量降低到10ppb以下，低至2ppb。
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公开(公告)号：US07235702B2
公开(公告)日：2007-06-26
申请号：US10798313
申请日：2004-03-12
申请人： Karl T. Chuang , Yung F. Chen
发明人： Karl T. Chuang , Yung F. Chen
IPC分类号： C07C29/04
CPC分类号： C07C29/04 , Y02P20/127 , C07C31/10 , C07C31/12
摘要： The invention disclosed relates to the production of alcohols. A first aspect of the invention relates to a process for production of alcohols, and in particular to a process for the catalytic hydration of an olefin to the corresponding alcohol in substantially anhydrous form, under selected mild reaction conditions, and using a selected catalyst. A second aspect of the invention relates to a process for dehydration of an azeotropic mixture, including a first alcohol and water. A hydration reaction between the water in the azeotropic mixture and an added olefin, under selected mild conditions, and using a selected catalyst, produces a product including a second alcohol corresponding to the olefin, and the first alcohol, in substantially anhydrous form.
摘要翻译： 所公开的本发明涉及醇的生产。 本发明的第一方面涉及一种生产醇的方法，特别涉及一种在选择的温和反应条件下使用所选择的催化剂将烯烃催化水合为基本无水形式的相应醇的方法。 本发明的第二方面涉及一种共沸混合物的脱水方法，包括第一种醇和水。 在选择的温和条件下，使用所选择的催化剂，在共沸混合物中的水和加入的烯烃之间的水合反应产生包含对应于烯烃的第二醇和基本上无水形式的第一种醇的产物。
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公开(公告)号：US06371455B1
公开(公告)日：2002-04-16
申请号：US09754581
申请日：2001-01-05
申请人： Adam T. Lee , Karl T. Chuang
发明人： Adam T. Lee , Karl T. Chuang
IPC分类号： B01F304
摘要： A gas/liquid contacting apparatus is provided wherein sedimentation of particulate solids at the corner of liquid overflow weirs of perforated trays is substantially reduced. This is achieved by bowing outwardly in a downstream direction the overflow weirs, to even out the liquid flow over them, and providing downcomer chutes from the weirs, which conform to the weir contour at the upper end. The downcomer chutes have sides converging in a downstream direction on a base to draw liquid away from the weir sides. The invention may be used in a single, two or four pass gas/liquid contacting apparatus.
摘要翻译： 提供了一种气体/液体接触装置，其中在多孔板的溢流堰处的液体溢流角处的颗粒固体沉降显着减少。 这可以通过在下游方向向外弯曲溢流堰，以使液体流过它们，并且提供来自堰的降液管斜槽，其符合上端的堰轮廓。 降液管滑槽具有在底部沿下游方向收敛的液体，以使液体远离堰侧。 本发明可以用于单一，二或四通气/液接触装置中。
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10.发明授权Supported catalyst and process for catalytic oxidation of volatile organic compounds 失效负载催化剂和挥发性有机化合物的催化氧化方法
公开(公告)号：US5851948A
公开(公告)日：1998-12-22
申请号：US700201
申请日：1996-08-20
申请人： Karl T. Chuang , Mingqian Zhang , Bing Zhou
发明人： Karl T. Chuang , Mingqian Zhang , Bing Zhou
IPC分类号： A62D3/00 , A62D3/38 , A62D101/22 , A62D101/28 , B01D53/86 , B01J23/56 , B01J23/652 , B01J35/00 , B01J23/00 , B01J8/00
CPC分类号： B01J35/0006 , B01D53/8668 , B01J23/56 , B01J23/6522
摘要： A catalyst for effective oxidation of volatile organic compounds (VOCs) includes 0.010-2 wt. % of a noble metal such as platinum in combination with 0.5-15 wt. % of a transition metal oxide such as chromium oxide (Cr.sub.2 O.sub.3), with at least the noble metal being deposited as a thin outer layer or shell not exceeding 0.10 mm thickness on a porous inert support such as alumina or silica having surface area of 10-400 m.sup.2 /g. The catalyst is made by adding the transition metal oxide such as chromium oxide (Cr.sub.2 O.sub.3) to the support material particles, and then subsequently mixing a solution of ammonium platinum nitrate with a suitable carrier liquid so as to form a "cluster" structure on the support material and which limits penetration of the active noble metal into the porous support, then drying, reducing, and calcining the metals-loaded support material. This catalyst composition and structure is highly effective for the oxidative destruction of VOCs in vapor form at concentrations of 1 ppm--5 vol. % and at reaction temperatures of 50.degree.-500.degree. C., 0-600 psig pressure, and space velocity of 1000-200,000 hr.sup.-1 to produce essentially only carbon dioxide and water products.
摘要翻译： 用于有效氧化挥发性有机化合物（VOC）的催化剂包括0.010-2wt。 ％的贵金属如铂与0.5-15wt。 ％的过渡金属氧化物如氧化铬（Cr 2 O 3），至少贵金属作为薄的外层或不超过0.10mm厚度的外壳沉积在多孔惰性载体如氧化铝或二氧化硅上，其表面积为10- 400 m2 / g。 通过向载体材料颗粒中加入过氧化铬（Cr 2 O 3）等过渡金属氧化物，然后将硝酸铵铵溶液与合适的载体液体混合，从而在载体上形成“簇”结构， 并且其限制了活性贵金属渗入多孔载体中，然后干燥，还原和煅烧载有金属的载体材料。 该催化剂组合物和结构对于以1ppm-5体积浓度的蒸汽形式的VOC的氧化破坏是非常有效的。 ％，在50-500℃，0-600psig压力和1000-200,000小时-1的空间速度的反应温度下，仅生成二氧化碳和水的产物。
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