-
公开(公告)号：US20240024857A1
公开(公告)日：2024-01-25
申请号：US17867950
申请日：2022-07-19
发明人： Xiankuan Zhang , Christelle Verrier
摘要： A conditioning process that is employed with a high selectivity catalyst (HSC) during an initial phase (i.e., start-up) of the epoxidation process is provided. The HSC conditioning process of the present disclosure ensures that the heat release from a catalyst bed containing an HSC during a start-up operation is less than 2000 kJ/Kgcat·hr. The HSC containing catalyst bed that has been conditioned by the process of the present disclosure exhibits improved performance (i.e., EO selectivity) and reduced hot spots.
-
公开(公告)号：US20220193650A1
公开(公告)日：2022-06-23
申请号：US17130961
申请日：2020-12-22
发明人： Mohammad Ganjvar
IPC分类号： B01J37/02 , C07D301/10 , B01J23/50
摘要： An ethylene oxide (EO) reactor is provided in which a removable impingement basket is configured to be inserted into the reactor inlet pipe of the EO reactor. The removable impingement basket provides protection for the silver-based catalyst filled tubes and other components that are present inside the EO reactor as well as providing another access point into the EO reactor. The removable impingement basket also can provide better distribution of the inlet gas as compared to an EO reactor containing a non-removable impingement plate.
-
公开(公告)号：US20190330134A1
公开(公告)日：2019-10-31
申请号：US16399153
申请日：2019-04-30
IPC分类号： C07C29/152 , C07C29/153
摘要： An improved catalytic hydration process that includes a catalytic hydration reaction section containing adiabatic reactors with ion exchange resin catalyst and which maintains low resin swelling and excellent selectivity while also reducing process complexity and increasing versatility.
-
公开(公告)号：US10160709B2
公开(公告)日：2018-12-25
申请号：US15672927
申请日：2017-08-09
发明人： Saurabh Katiyar
摘要： A process for the preparation of glycol ethers by providing a diethylene glycol ether column bottoms mixture comprising triethylene glycol ether, tetraethylene glycol ether, and glycol ether catalyst; separating, in a stripping column, the column bottom mixture into a triethylene glycol ether vapor overhead and a liquid bottoms; and separating, in an evaporator, the liquid bottoms into a residue containing about 80% to about 90% tetraethylene glycol ether and an evaporator overhead comprising at least about 60% tetraethylene glycol ether.
-
5.发明申请公开(公告)号：US20180326402A1
公开(公告)日：2018-11-15
申请号：US15834365
申请日：2017-12-07
IPC分类号： B01J23/50 , B01J21/04 , B01J35/00 , B01J35/10 , B01J37/00 , B01J37/04 , B01J37/08 , B01J37/02 , C07D301/10 , B01D71/02 , B01D53/22
CPC分类号： B01J23/50 , B01D53/22 , B01D71/022 , B01J21/04 , B01J35/0006 , B01J35/1009 , B01J37/0018 , B01J37/0201 , B01J37/04 , B01J37/082 , C07D301/10
摘要： A precursor mixture for producing a porous body, wherein the precursor mixture comprises: (i) at least one milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) non-silicate powder that functions as a binder of the alpha alumina powders, and (iii) at least one burnout material having a particle size of 1-10 microns and a decomposition temperature of less than 550° C., with the proviso that a burnout material having a decomposition temperature of 550° C. or greater is excluded from the precursor mixture.
-
公开(公告)号：US10040055B2
公开(公告)日：2018-08-07
申请号：US15579419
申请日：2016-06-02
IPC分类号： B01J21/04 , B01J21/08 , B01J21/12 , B01J23/04 , B01J23/36 , B01J23/50 , B01J35/10 , B01J19/00 , C07D301/10 , B01J37/00
摘要： A method is provided for improving the performance of a silver-based epoxidation catalyst comprising a carrier. The carrier includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g, a surface area from 0.3 m2/g to 3.0 m2/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less and a permeability of 30 mdarcys or greater. A catalytic amount of silver and a promoting amount of one or more promoters is disposed on and/or in said carrier. The method further includes the steps of initiating an epoxidation reaction by reacting a feed gas composition containing ethylene and oxygen present in a ratio of from about 3.5:1 to about 12:1, in the presence of the silver-based epoxidation catalyst at a temperature of about 200° C. to about 230° C., and subsequently increasing the temperature either stepwise or continuously.
-
公开(公告)号：US20160354760A1
公开(公告)日：2016-12-08
申请号：US15171278
申请日：2016-06-02
发明人： Wojciech L. Suchanek
IPC分类号： B01J21/04 , C07D301/22 , B01J35/10 , B01J23/68 , B01J35/00
CPC分类号： B01J21/04 , B01J19/0013 , B01J23/04 , B01J23/36 , B01J23/50 , B01J35/04 , B01J35/1009 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/108 , B01J37/0018 , B01J37/086 , B01J2219/00051 , C04B38/00 , C04B38/08 , C04B41/009 , C04B41/4535 , C04B41/5116 , C04B41/88 , C04B2111/0081 , C07D301/10 , C07D301/22 , C04B35/10 , C04B38/0096 , C04B41/455
摘要： A porous body is provided with enhanced fluid transport properties that is capable of performing or facilitating separations, or performing reactions and/or providing areas for such separations or reactions to take place. The porous body includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g and a surface area from 0.3 m2/g to 3.0 m2/g. The porous body further includes a pore architecture that provides at least one of a tortuosity of 7.0 or less, a constriction of 4.0 or less and a permeability of 30 mdarcys or greater. The porous body can be used in a wide variety of applications such as, for example, as a filter, as a membrane or as a catalyst carrier.
摘要翻译： 多孔体具有增强的流体输送性能，其能够执行或促进分离，或进行反应和/或提供用于发生这种分离或反应的区域。 多孔体包括至少80％的α氧化铝，孔体积为0.3mL / g至1.2mL / g，表面积为0.3m 2 / g至3.0m 2 / g。 所述多孔体还包括孔构造，其提供曲折度为7.0以下，缩窄为4.0以下，渗透性为30mdar以上的至少一种。 多孔体可用于各种应用中，例如作为过滤器，膜或作为催化剂载体。
-
公开(公告)号：US09452419B2
公开(公告)日：2016-09-27
申请号：US14279570
申请日：2014-05-16
发明人： Nabil Rizkalla , Andrzej Rokicki
CPC分类号： B01J23/685 , B01J21/04 , B01J21/063 , B01J23/26 , B01J23/50 , B01J23/688 , B01J37/0207 , C07D301/10 , Y02P20/52
摘要： A carrier for an ethylene epoxidation catalyst is provided that includes an alumina first component and a mixed metal oxide of alumina second component. The mixed metal oxide of alumina second component comprises a corundum lattice structure having a plurality of O—Al—O bonds, wherein an Al atom of at least one O—Al—O bond of the plurality of O—Al—O bonds, but not all of the plurality of O—Al—O bonds, is replaced with a divalent or trivalent transition metal selected from the group consisting of scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni) copper (Cu), and zinc (Zn). A catalyst containing the carrier, as well as a process for the epoxidation of ethylene using the catalyst are also disclosed.
摘要翻译： 提供了一种用于乙烯环氧化催化剂的载体，其包括氧化铝第一组分和氧化铝第二组分的混合金属氧化物。 氧化铝第二成分的混合金属氧化物包括具有多个O-Al-O键的刚玉晶格结构，其中多个O-Al-O键中的至少一个O-Al-O键的Al原子，但是 不是所有的多个O-Al-O键都被选自钪（Sc），钛（Ti），钒（V），铬（Cr），锰（ Mn），铁（Fe），钴（Co），镍（Ni）铜（Cu）和锌（Zn）。 还公开了含有载体的催化剂以及使用该催化剂对乙烯进行环氧化的方法。
-
公开(公告)号：US20150183719A1
公开(公告)日：2015-07-02
申请号：US14578784
申请日：2014-12-22
发明人： Katelyn Marvin , Barry Jay Billig
IPC分类号： C07C213/10 , C07C213/04
CPC分类号： C07C213/10 , C07C213/04 , C07C215/08 , C07C215/12
摘要： A process for the preparation of ethanolamines comprising reacting a water-ammonia solution with ethylene oxide to form an effluent reaction mixture comprising unreacted ammonia, water and ethanolamines. This effluent reaction mixture is then subjected to a succession of steps to, inter alia, separate the ethanolamines.
摘要翻译： 一种制备乙醇胺的方法，包括使水 - 氨溶液与环氧乙烷反应以形成包含未反应的氨，水和乙醇胺的流出反应混合物。 然后将该流出物反应混合物进行一系列步骤，特别是分离乙醇胺。
-
公开(公告)号：US20150175565A1
公开(公告)日：2015-06-25
申请号：US14578803
申请日：2014-12-22
发明人： Andrew D. Schmitz , William Crudge
IPC分类号： C07D301/10
CPC分类号： C07D301/10
摘要： A method for the epoxidation of an olefin comprising reacting a feed gas composition containing an olefin, oxygen, and a halocarbon moderator having a first moderator concentration M1 in the presence of an epoxidation catalyst at a first temperature T1; increasing the first temperature to a second temperature T2; and increasing the first moderator concentration to a second moderator concentration M2, wherein the second moderator concentration is defined by: M2=M1(1+r)T2−T1 wherein the temperature has the units of degrees Celsius, and r is a constant factor which is in the range of from 0.001% to 100%.
摘要翻译： 一种烯烃的环氧化方法，包括在环氧化催化剂的存在下，在第一温度T1下使包含烯烃，氧和具有第一缓和剂浓度M1的卤化碳慢化剂的进料气体组合物反应; 将第一温度升高到第二温度T2; 并且将第一减速剂浓度增加到第二减速剂浓度M2，其中第二减速剂浓度由以下定义：M2 = M1（1 + r）T2-T1其中温度具有摄氏度的单位，r是常数因子 在0.001％至100％的范围内。
-
-
-
-
-
-
-
-
-
搜索结果
93 条记录 (耗时 0.024 秒)
