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公开(公告)号：US4269265A
公开(公告)日：1981-05-26
申请号：US98707
申请日：1979-11-29
申请人： Robert A. Meyer , Richard A. Bretl
发明人： Robert A. Meyer , Richard A. Bretl
CPC分类号： F28F1/405 , F28F1/02 , F28F13/12 , Y10S165/53
摘要： A tubular heat exchanger for liquids having a turbulator in a liquid flow tube offering low resistance to internal liquid flow. The liquid flow tube has an inside surface and transverse minor and major inner dimensions. The internal turbulator is elongated and comprises a heat conducting wire having successive, substantially canted undulations in contact with the tube's inner surface.
摘要翻译： 一种用于液体的管式热交换器，其具有液体流管中的湍流器，对内部液体流动具有低阻力。 液体流管具有内表面和横向次要和主要的内部尺寸。 内部湍流器是细长的并且包括导热丝，其具有与管的内表面接触的连续的基本上倾斜的起伏。
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公开(公告)号：US5093509A
公开(公告)日：1992-03-03
申请号：US702523
申请日：1991-05-20
申请人： Robert A. Meyer , Edward T. Marquis
发明人： Robert A. Meyer , Edward T. Marquis
IPC分类号： B01J31/34 , B01J31/40 , B01J38/00 , B01J38/48 , C07B61/00 , C07C27/00 , C07C29/04 , C07C31/12 , C07D301/19 , C07D301/32
CPC分类号： C07D301/19 , B01J31/0202 , B01J31/34 , B01J31/4015 , B01J38/48 , C07D301/32 , B01J21/16 , B01J2231/72 , Y02P20/52 , Y02P20/584
摘要： An epoxidation reaction product formed by the molybdenum catalyzed reaction of propylene with tertiary butyl hydroperoxide to provide propylene oxide and tertiary butyl alcohol is separated by distillation into a propylene fraction, a propylene oxide fraction, a tertiary butyl alcohol fraction and a heavy liquid distillation fraction composed primarily of tertiary butyl hydroperoxide, tertiary butyl alcohol, dissolved molybdenum catalyst, and impurities including lower aliphatic C.sub.1 -C.sub.4 carboxylic acids, and the dissolved molybdenum content of the heavy distillation fraction is adjusted to about 300 to 500 ppm of dissolved molybdenum, if necessary, by treatment with a precipitating agent and contacted with a solid adsorbent consisting essentially of a synthetic, porous, high surface area amorphous magnesium silicate.
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3.发明授权Treatment of tertiary butyl hydroperoxide distillation fraction to remove acidic contaminants 失效处理叔丁基过氧化氢蒸馏馏分去除酸性污染物
公开(公告)号：US5151530A
公开(公告)日：1992-09-29
申请号：US765610
申请日：1991-09-25
IPC分类号： C07C407/00 , C07C409/04 , C07D301/19 , C07D303/04
CPC分类号： C07D301/19 , C07C407/00 , C07C407/003 , C07C409/04 , C07D303/04
摘要： The distillation product fraction obtained from an isobutane oxidation reaction product after the removal of unreacted isobutane will contain tertiary butyl hydroperoxide, tertiary butyl alcohol and carboxylic acid contaminants such as formic acid, acetic acid and isobutyric acid. It has been discovered that when the distillation product fraction is treated with about 1/2 to 1 equivalents of calcium oxide and/or calcium hydroxide based on the carboxylic acid content of the distillate product fraction, a portion of the carboxylic acid contaminants will precipitate thus partially purifying the distillation product fraction so that, thereafter, molybdenum precipitation will be substantially inhibited when the thus-treated distillation product fraction is used as a feedstock for an epoxidation reaction wherein tertiary butyl hydroperoxide is reacted with an olefin in the presence of a soluble molybdenum catalyst to provide an olefin epoxide and additional tertiary butyl hydroperoxide.
摘要翻译： 在除去未反应的异丁烷之后由异丁烷氧化反应产物得到的蒸馏产物馏分将含有叔丁基过氧化氢，叔丁醇和羧酸污染物如甲酸，乙酸和异丁酸。 已经发现，当蒸馏产物馏分基于馏出物产物级分的羧酸含量用约1/2至1当量的氧化钙和/或氢氧化钙处理时，一部分羧酸污染物将沉淀，因此 部分纯化蒸馏产物部分，使得当将如此处理的蒸馏产物馏分用作环氧化反应的原料时，钼沉淀将基本上被抑制，其中叔丁基过氧化氢在可溶性钼存在下与烯烃反应 催化剂以提供烯烃环氧化物和另外的叔丁基过氧化氢。
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公开(公告)号：US5093506A
公开(公告)日：1992-03-03
申请号：US400901
申请日：1989-08-30
IPC分类号： C07C407/00 , C07C409/04 , C07D301/19 , C07D303/04
CPC分类号： C07D301/19 , C07C407/00 , C07C407/003 , C07C409/04 , C07D303/04
摘要： The distillation product fraction obtained from an isobutane oxidation reaction product after the removal of unreacted isobutane will contain tertiary butyl hydroperoxide, tertiary butyl alcohol and carboxylic acid contaminants such as formic acid, acetic acid and isobutyric acid. It has been discovered that when the distillation product fraction is treated with about 1/2 to 1 equivalents of calcium oxide and/or calcium hydroxide based on the carboxylic acid content of the distillate product fraction, a portion of the carboxylic acid contaminants will precipitate thus partially purifying the distillation product fraction so that, thereafter, molybdenum precipitation will be substantially inhibited when the thus-treated distillation product fraction is used as a feedstock for an epoxidation reaction wherein tertiary butyl hydroperoxide is reacted with an olefin in the presence of a soluble molybdenum catalyst to provide an olefin epoxide and additional tertiary butyl hydroperoxide.
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公开(公告)号：US4977285A
公开(公告)日：1990-12-11
申请号：US447934
申请日：1989-12-08
IPC分类号： B01J27/24 , C07B61/00 , C07C27/00 , C07C27/28 , C07C29/80 , C07C31/12 , C07C407/00 , C07D301/19 , C07D301/32 , C07D303/04
CPC分类号： C07D301/19 , C07C29/80 , C07C407/003 , C07D301/32
摘要： A heavy distillation fraction comprising tertiary butyl hydroperoxide, tertiary butyl alcohol, impurities and dissolved molybdenum catalyst resulting from the removel of propylene, propylene oxide and tertiary butyl alcohol from an epoxidation reaction product is mixed with about 5 to about 10 wt. %, based on the weight of the heavy liquid distilation fraction, of a lower aliphatic alcohol containing from 1 to 3 carbon atoms to provide a charge mixture, and the charge mixture is:charged to a falling film evaporator and separator therein, under evaporator operating conditions including a temperature within the range of about 20.degree. to about 150.degree. C. and a pressure of about 1 to about 200 mm Hg., into an overhead vaporized fraction comprising substantially all of the aliphatic alcohol and from about 80 to about 95 wt. % of the heavy distillation fraction charged to the falling film evaporator.The practice of the present invention will also provide a clear liquid falling film evaporator residue fraction comprising tertiary butyl hydroperoxide, tertiary butyl alcohol, substantially all of the molybdenum contained in the heavy liquid fraction, and impurities.
摘要翻译： 将来自环氧化反应产物的丙烯，环氧丙烷和叔丁醇的除去产生的叔丁基过氧化氢，叔丁醇，杂质和溶解的钼催化剂的重蒸馏馏分与约5至约10重量％ ％，基于重液体蒸馏馏分的重量，含有1至3个碳原子的低级脂族醇以提供电荷混合物，并且充电混合物：在蒸发器操作下将其装入降膜蒸发器和分离器中 包括温度在约20℃至约150℃范围内的温度和约1至约200mm Hg的压力的塔顶蒸发馏分包含基本上所有脂族醇和约80至约95wt 。 ％的重蒸馏馏分装入降膜蒸发器中。 本发明的实践还将提供包含叔丁基过氧化氢，叔丁醇，重质液体馏分中所含的基本上所有钼以及杂质的透明液体降膜蒸发器残渣馏分。
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公开(公告)号：US5336790A
公开(公告)日：1994-08-09
申请号：US154321
申请日：1993-11-18
IPC分类号： B01D3/00 , C22B34/34 , C07D301/19 , C07F11/00
CPC分类号： C22B34/345 , Y02P10/23
摘要： A process for recovery of molybdenum from residual fractions derived from an epoxidation reaction of propylene with tertiary butyl hydroperoxide in liquid phase with tertiary butyl alcohol, in the presence of soluble molybdenum, which process comprises:Fractionating epoxidation reaction product for obtaining a liquid fraction containing essentially all molybdenum from the reaction product;Contacting the liquid fraction with anhydrous ammonia for forming a precipitate containing the major portion of the molybdenum and a liquid phase containing 500 ppm or less molybdenum;Separating the liquid phase from the precipitated solid;Evaporating the liquid phase under conditions of elevated temperatures and reduced pressure in the presence of 1 to 3% water for separation into an evaporator overhead vapor essentially free of molybdenum and an evaporator concentrate comprising essentially all of the molybdenum fed to the evaporator;Rapidly cooling evaporator concentrate from about evaporation temperature to about room temperature or less for converting the evaporator concentrate into a brittle, fracturable solid which is easier to accumulate and dispose of in an environmentally acceptable manner.
摘要翻译： 在可溶性钼存在下，从丙烯与叔丁基氢过氧化物在液相中与叔丁基氢过氧化物的环氧化反应的残余馏分回收钼的方法，该方法包括：分馏环氧化反应产物，用于获得基本上含有 来自反应产物的所有钼; 将液体馏分与无水氨接触，形成含钼主要部分的沉淀物和含有500ppm以下钼的液相; 将液相与沉淀固体分离; 在1至3％的水存在下，在升高的温度和减压条件下蒸发液相，以分离成基本上不含钼的蒸发器塔顶蒸气和蒸发器浓缩物，其基本上包含进料到蒸发器的所有钼; 将蒸发器浓缩物从大约蒸发温度快速冷却至约室温或更低，以将蒸发器浓缩物转化成脆性，可破碎的固体，其易于以环境可接受的方式积聚和处理。
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公开(公告)号：US5290527A
公开(公告)日：1994-03-01
申请号：US971741
申请日：1992-11-05
CPC分类号： C22B34/345 , Y02P10/23
摘要： A process for recovery of molybdenum from residual fractions derived from an epoxidation reaction of propylene with tertiary butyl hydroperoxide in liquid phase with tertiary butyl alcohol, in the presence of soluble molybdenum, which process comprises:Fractionating epoxidation reaction product for obtaining a liquid fraction containing essentially all molybdenum from the reaction product;Contacting the liquid fraction with anhydrous ammonia for forming a precipitate containing the major portion of the molybdenum and a liquid phase containing 500 ppm or less molybdenum;Separating the liquid phase from the precipitated solid;Evaporating the liquid phase under conditions of elevated temperatures and reduced pressure in the presence of 1 to 3% water for separation into an evaporator overhead vapor essentially free of molybdenum and an evaporator concentrate comprising essentially all of the molybdenum fed to the evaporator;Rapidly cooling evaporator concentrate from about evaporation temperature to about room temperature or less for converting the evaporator concentrate into a brittle, fracturable solid which is easier to accumulate and dispose of in an environmentally acceptable manner.
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公开(公告)号：US5262017A
公开(公告)日：1993-11-16
申请号：US47910
申请日：1993-04-19
IPC分类号： C07B63/00 , B01D3/40 , C07D301/12 , C07D301/32 , C07D303/04
CPC分类号： B01D3/40 , C07D301/32
摘要： Impure propylene oxide is purified by a distillation process wherein it is (a) extractively distilled in a first column using a C.sub.2 to C.sub.6 alkylene glycol extractive distillation agent to form a first overhead fraction comprising propylene oxide, C.sub.5 -C.sub.7 hydrocarbons methanol, water and oxygen-containing impurities, (b) wherein the first overhead fraction is separated in a second column into a second overhead fraction comprising most of the pentanes, pentenes and oxygen-containing impurities and a partially purified propylene oxide bottoms fraction comprising propylene oxide, hexenes, hexanes, and only residual quantities of pentenes and pentanes, (c) wherein the partially purified bottoms fraction is extracting distilled in a third column using a C.sub.7 -C.sub.10 alkane hydrocarbon extractive distillation agent to provide a further purified bottoms fraction containing substantially all of the propylene oxide, hexenes, hexanes charged to the third distillation column, and (d) the further purified bottoms fraction is extractively distilled in a fourth column using a C.sub.7 to C.sub.10 alkane hydrocarbon extractive distillation agent to provide a purified propylene oxide overhead fraction consisting essentially of propylene oxide.
摘要翻译： 不纯的环氧丙烷通过蒸馏方法纯化，其中（a）使用C2至C6亚烷基二醇萃取蒸馏器在第一塔中进行萃取蒸馏以形成包含环氧丙烷，C 5 -C 7烃甲醇，水和氧的第一塔顶馏分 （b），其中将第一塔顶馏分在第二塔中分离成包含大部分戊烷，戊烯和含氧杂质的第二塔顶馏分和部分纯化的环氧丙烷底部馏分，其包含环氧丙烷，己烯，己烷 ，并且仅剩余量的戊烯和戊烷，（c）其中部分纯化的塔底馏分在第三塔中使用C 7 -C 10烷烃烃萃取蒸馏器提取蒸馏，以提供含有基本上所有环氧丙烷的进一步纯化的塔底馏分 ，己烯，加入第三蒸馏塔的己烷，和（d）进一步纯化的bo 在第四列中使用C 7至C 10烷烃烃萃取蒸馏器对塔底馏分进行萃取蒸馏，以提供基本上由环氧丙烷组成的纯化的环氧丙烷塔顶馏分。
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公开(公告)号：US5106458A
公开(公告)日：1992-04-21
申请号：US736365
申请日：1991-07-26
IPC分类号： C07D301/19 , C07D301/32 , C07D303/04
CPC分类号： C07D301/19 , C07D301/32
摘要： Methyl formate is removed from impure propylene oxide by contacting the impure propylene oxide in a treating zone with a basic ion exchange resin for a period of time sufficient to convert the methyl formate to formic acid and methanol, and by withdrawing a substantially methyl formate-free treated propylene oxide product from the treating zone.
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公开(公告)号：US5017135A
公开(公告)日：1991-05-21
申请号：US423234
申请日：1989-10-18
申请人： Robert A. Meyer
发明人： Robert A. Meyer
IPC分类号： A61C17/06
CPC分类号： A61C17/046
摘要： A dental vacuum system includes a sludge trap and liquid separator between dental operatories and a vacuum source (vacuum pump). The sludge trap separates out metals, such as silver, gold, and mercury, and other large particles from the fluid flow between the operatories and the vacuum source. By utilizing a static structure including a sanitary tee, a plastic pipe extending downwardly from the tee, and a slide valve, the metals may be easily collected, and periodically capped and sent to salvage, for the recovery of the metals. The liquid separator comprises a number of plastic pipes extending downwardly from a linear flow path of the fluid slurry to the vacuum pump. A number of sanitary tees are provided connected to the pipes, the pipes each having a larger cross-sectional area (diameter) than the fluid conduit connected to the vacuum pump. At their bottoms, the pipes are connected to a common drain valve. No-hub (quick release) couplings may be used for easy removal of components.
摘要翻译： 牙科真空系统包括在牙齿操作者和真空源（真空泵）之间的污泥捕集器和液体分离器。 污泥捕集器从操作者和真空源之间的流体流中分离出金属，例如银，金和汞以及其他大颗粒。 通过利用包括卫生三通，从发球台向下延伸的塑料管和滑阀的静态结构，可以容易地收集金属，并且周期性地封盖并送往补救以回收金属。 液体分离器包括从流体浆料的线性流动路径向下延伸到真空泵的多个塑料管。 连接到管道上的多个卫生三通，管道各自具有比连接到真空泵的流体导管更大的横截面面积（直径）。 在底部，管道连接到普通的排水阀。 可以使用无轮毂（快速释放）联轴器来轻松拆卸部件。
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