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公开(公告)号：US20140200357A1
公开(公告)日：2014-07-17
申请号：US14152519
申请日：2014-01-10
IPC分类号： C07D301/10 , C07C29/132 , C07D301/08
CPC分类号： C07D301/10 , C07C29/106 , C07D301/08 , C07C31/202
摘要： A method for the epoxidation of an olefin comprising the steps of reacting a feed gas composition containing an olefin, oxygen, and a moderator having a post-conditioning step where the catalyst is exposed to reactor feed having a chlorides concentration of from about 5 ppm to about 7 ppm and at a temperature of about 215° C. to about 225° C.
摘要翻译： 一种用于烯烃环氧化的方法，包括以下步骤：使含有烯烃，氧和具有后处理步骤的缓和剂的进料气体组合物反应，其中催化剂暴露于反应器进料中，氯化物浓度为约5ppm至 约7ppm和约215℃至约225℃的温度
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42.发明申请公开(公告)号：US20140187417A1
公开(公告)日：2014-07-03
申请号：US14144747
申请日：2013-12-31
发明人： Serguei Pak
IPC分类号： B01J23/68
CPC分类号： B01J23/688 , B01J21/04 , B01J23/50 , B01J23/66 , B01J37/0203 , B01J37/0213 , B01J37/08 , B01J37/18 , C07D301/10 , Y02P20/52
摘要： A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with a liquid silver-containing solution to a calcination process, wherein the calcination process comprises a solvent removal step in which the silver-impregnated carrier is heated to a base temperature (Tbase) of at least 80° C. and up to about 200° C. to produce a dry carrier impregnated with ionic silver, followed by a silver reduction step in which the dry carrier is gradually heated above the base temperature to a maximum temperature (Tmax) of at least 350° C. and up to about 500° C. and then gradually cooled to the base temperature, wherein the method is conducted such that (Tbase−Tmax)×HW is at least 2000 min.° C. wherein HW is a full width at half maximum of a temperature versus time curve delineated by the silver reduction step.
摘要翻译： 一种制备有效地将乙烯氧化成环氧乙烷的催化剂的方法，该方法包括使浸渍有含液体银的溶液的耐火材料载体进行煅烧过程，其中所述煅烧过程包括溶剂除去步骤，其中所述银 将浸渍的载体加热至至少80℃至高达约200℃的基础温度（Tbase），以产生用离子银浸渍的干燥载体，随后进行银还原步骤，其中干燥载体逐渐 在基础温度以上加热至最高温度（Tmax）至少350℃，最高约500℃，然后逐渐冷却至基体温度，其中进行方法为（Tbase-Tmax）×HW 是至少2000分钟。其中HW是通过银还原步骤描绘的温度对时间曲线的半峰全宽。
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公开(公告)号：US11931725B2
公开(公告)日：2024-03-19
申请号：US17867950
申请日：2022-07-19
发明人： Xiankuan Zhang , Christelle Verrier
IPC分类号： C07D301/03 , B01J21/04 , B01J23/36 , B01J23/50 , B01J35/00 , B01J35/08 , B82Y30/00 , B82Y40/00
CPC分类号： B01J23/50 , B01J21/04 , B01J23/36 , B01J35/006 , B01J35/08 , C07D301/03 , B82Y30/00 , B82Y40/00
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.
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公开(公告)号：US11926540B2
公开(公告)日：2024-03-12
申请号：US17686556
申请日：2022-03-04
IPC分类号： C02F1/42 , C02F101/34 , C02F103/36 , C07D303/04
CPC分类号： C02F1/42 , C07D303/04 , C02F2001/422 , C02F2101/34 , C02F2103/36
摘要： A method for the oxidation of ethylene to form ethylene oxide which comprises
treating an aqueous stream in a cycle water treatment unit containing an anion exchange resin to reduce the content of the impurities.-
45.发明授权公开(公告)号：US11865646B2
公开(公告)日：2024-01-09
申请号：US17575023
申请日：2022-01-13
发明人： Mohammad Ganjvar
IPC分类号： B23K33/00 , B01J19/00 , B01J19/24 , B23K101/14
CPC分类号： B23K33/006 , B01J19/0053 , B01J19/2415 , B01J2219/00081 , B23K2101/14
摘要： Reduced tube pitch within a shell-and-tube heat exchange reactor such as, for example, an EO reactor, is provided by utilizing a welding material that has a high tensile (i.e., a tensile strength of greater than 600 MPa). Reduced tube pitch allows for more elongated tubes (the tubes are filled with a catalyst) to be present in a reactor, and thus a smaller reactor can be manufactured. Notably, the use of a high tensile strength welding material allows the implementation of a small welding groove located between a beveled sidewall of a beveled upper portion of an opening provided in a tube sheet overlay material (that is located atop a tube sheet) and an outermost sidewall of the elongated tube passing through the opening in the tube sheet overlay material.
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公开(公告)号：US11439986B2
公开(公告)日：2022-09-13
申请号：US15839987
申请日：2017-12-13
发明人： Evgeny Beletskiy
IPC分类号： B01J23/50 , C07D301/02 , B01J37/02 , B01J35/00 , B01J37/08
摘要： A silver impregnation solution containing: (i) silver ions, (ii) a polar organic additive containing two to four carbon atoms and two to four functional groups selected from hydroxy, carboxylic acid, and amine groups, provided that a carboxylic acid group can only be present along with a hydroxy or amine group, and provided that an amine group can only be present along with a hydroxy or carboxylic acid group; and (iii) water; wherein components (i) and (ii) are water soluble and dissolved in the impregnation solution. Also described herein is a method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with the above-described silver impregnation solution to a calcination process. Also described herein is a method for converting ethylene to ethylene oxide by use of the foregoing silver catalyst, as produced by the above-described silver impregnation solution.
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47.发明申请公开(公告)号：US20220274093A1
公开(公告)日：2022-09-01
申请号：US17744870
申请日：2022-05-16
IPC分类号： B01J23/50 , B01J21/04 , B01J35/00 , B01J35/10 , B01J37/00 , B01D53/22 , B01J37/08 , B01J37/02 , C07D301/10 , B01D71/02 , B01J37/04 , B01J35/04 , C04B35/624 , C04B38/00
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.
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公开(公告)号：US20220203322A1
公开(公告)日：2022-06-30
申请号：US17564658
申请日：2021-12-29
发明人： Mohammad Ganjvar , Jiacheng Ni
摘要： A baffle (i.e., tube support) for use in a shell-and-tube heat exchange reactor, such as, for example, an ethylene oxide (EO) reactor, is provided that accommodates reduced tube pitch, and thus more catalyst packed tubes can be inside the reactor. The baffle, which can be referred to herein as a corrugated grid support, includes a plurality of corrugated stainless steel strips which sit into each other and form a grid pattern having tube openings. Each tube opening is configured to permit a catalyst packed tube to be inserted therein, while allowing a sufficient open area along the shell side of the tube to permit coolant to flow through the reactor.
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公开(公告)号：US11185847B2
公开(公告)日：2021-11-30
申请号：US16178148
申请日：2018-11-01
IPC分类号： B01J21/04 , B01J35/10 , C07D301/22 , B01J23/50 , C07D301/10 , C04B41/88 , C04B38/08 , C04B41/00 , C04B41/51 , B01J35/04 , B01J37/00 , B01J37/08 , C04B38/00 , B01J19/00 , B01J23/04 , B01J23/36 , C04B41/45 , C04B111/00
摘要： A precursor mixture for producing a porous body, wherein the precursor mixture comprises: (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powders, and (iii) burnout materials having a particle sizes of 1-10 microns. In some embodiments, an unmilled alpha alumina powder having a particle size of 10 to 100 microns is also included in said precursor mixture. Also described herein is a method for producing a porous body in which the above-described precursor mixture is formed to a given shape, and subjected to a heat treatment step in which the formed shape is sintered to produce the porous body.
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公开(公告)号：US10807929B2
公开(公告)日：2020-10-20
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.
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