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1.发明授权Process for the simultaneous separation of ethylene oxide and carbon dioxide from the gaseous mixtures obtained in the direct oxidation of ethylene with oxygen 失效在用氧气直接氧化乙烯时获得的气态混合物中同时分离环氧乙烷和二氧化碳的方法
公开(公告)号：US3948621A
公开(公告)日：1976-04-06
申请号：US428570
申请日：1973-12-26
IPC分类号： C07D301/32 , B01D53/14 , B01D19/00
CPC分类号： C07D301/32
摘要： Process for the simultaneous separation of ethylene oxide and carbon dioxide from the gaseous mixtures obtained in the direct oxidation of ethylene with oxygen, comprisingA. cooling the gaseous mixture containing ethylene oxide, unreacted ethylene, water vapour, carbon dioxide and inert gases after addition of methanol to a temperature such that the water vapour present separates in the form of an aqueous methanol solution;B. washing the obtained gaseous mixture in an absorption zone with methanol, the methanol being fed into the intermediate part of the absorption zone as a main methanol stream and into the upper part as a secondary methanol stream, maintaining the temperature of the secondary methanol stream at least about 30.degree.C lower than that of the main methanol stream and removing from the upper part a gaseous mixture being practically free of ethylene oxide and containing carbon dioxide and ethylene and from the lower part of the absorption zone a solution of ethylene oxide in methanol; andC. recovering the ethylene oxide from the methanol solution.
摘要翻译： 将乙烯与氧直接氧化得到的气体混合物同时分离出环氧乙烷和二氧化碳的方法，包括A.将含有乙烯氧化物的气态混合物，不需要的乙烯，水蒸气，二氧化碳和惰性气体加入 甲醇到温度，如水蒸气存在于甲醇溶液形式中分离; B.用甲醇洗涤吸收区中得到的气体混合物，将甲醇装入作为主要甲醇流的吸收区的中间部分，并作为二级甲醇流进入第二部分甲醇流，保持二级甲醇流的温度 至少比主甲醇流低30℃，从上部除去实际上不含环氧乙烷并含有二氧化碳和乙烯的气体混合物，并且从吸收区的下部将环氧乙烷溶液 甲醇; 和C.从甲醇溶液中回收乙烯氧化物。
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公开(公告)号：US3935279A
公开(公告)日：1976-01-27
申请号：US428575
申请日：1973-12-26
IPC分类号： C07C43/04 , C07C20060101 , C07C41/00 , C07C41/02 , C07C41/03 , C07C43/10 , C07C43/11 , C07C67/00 , C08G65/00 , C08G65/28 , C09K3/00 , C11D7/50
CPC分类号： C07C41/03
摘要： A process for the production of ethylene glycol ethers by reacting ethylene oxide with monofunctional aliphatic alcohols, which comprisesReacting a monofunctional aliphatic alcohol and ethylene oxide in a first reaction stage in a molar ratio of from about 3:1 to 20:1;Separating excess alcohol from the ethylene glycol ethers obtained as the reaction products in the first stage;Reacting the ethylene glycol ethers with ethylene oxide in a molar ratio of from about 1:1 to 10:1 and with monoethylene glycol ether in a second reaction stage;Separating the monoethylene glycol ether and the diethylene glycol ether from the reaction products of the second stage, maintaining a weight ratio of the discharged fraction to the recycled fraction of from about 0.5:1 to 5:1.The reaction is carried out under abiabatic conditions in the first stage and under isothermal conditions in the second stage.
摘要翻译： 一种通过使环氧乙烷与单官能脂肪醇反应制备乙二醇醚的方法，其包括在第3阶段至第20阶段的摩尔比中的第一反应阶段中反应单官能醇和乙烯氧化物：
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公开(公告)号：US4033617A
公开(公告)日：1977-07-05
申请号：US703342
申请日：1976-07-08
IPC分类号： C07D301/32 , B01D3/14 , C07D303/04
CPC分类号： C07D301/32
摘要： Crude ethylene oxide present in the dilute aqueous solution resulting from the extraction with an aqueous solvent of ethylene oxide from the gaseous stream obtained by catalytic oxidation of ethylene is purified by desorption, liquefaction, distillation in a fractionating column and final desorption treatment to remove absorbed non-condensable gases. The fractionating column is heated by condensation of the water vapor evolved during desorption and a liquid stream of ethylene oxide rich in acetaldehyde is discharged from the bottom, treated to convert a fraction of said acetaldehyde into high-boiling products, distilled to remove the latter as bottoms and returned to the fractionating column.
摘要翻译： 通过由乙烯的催化氧化获得的气流中的环氧乙烷的水性溶剂萃取而得到的稀水溶液中存在的稀水溶液中的粗环氧乙烷通过解吸，液化，分馏塔中的蒸馏和最终解吸附处理来净化， 可冷凝气体。 分馏柱通过在解吸过程中放出的水蒸气的冷凝而被加热，并且从底部排出富含乙醛的环氧乙烷的液体流，经处理以将所述乙醛的一部分转化为高沸点产物，蒸馏除去后者作为 底部并返回分馏塔。
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公开(公告)号：US4169856A
公开(公告)日：1979-10-02
申请号：US943498
申请日：1978-09-18
IPC分类号： C07C213/04 , C07C215/08 , C07C215/12 , C07C89/02 , C07C89/04
CPC分类号： C07C215/08 , C07C213/04 , C07C215/12
摘要： A process for the preparation of ethanolamines includes passing ammonia in counter-flow with water and a recycled ammoniacal solution through an absorption column provided with internally cooled bubbling-trays to obtain an ammoniacal solution containing from 20 to 50% by weight of ammonia, reacting the ammoniacal solution with ethylene oxide firstly in an isothermal reactor and then in an adiabatic reactor to obtain substantially complete conversion of the ethylene oxide to ethanolamines, removing by means of a desorption column and recycling unreacted ammonia and part of the water from the reaction product, evaporating a greater part of the remaining water in an evaporator and dehydrating the ethanolamines at low pressure.
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公开(公告)号：US4055579A
公开(公告)日：1977-10-25
申请号：US420343
申请日：1973-11-29
IPC分类号： C07D301/10
CPC分类号： C07D301/10
摘要： Ethylene oxide is prepared by supplying a gaseous mixture containing ethylene, oxygen and a moderator of the oxidation reaction to a first reaction zone containing a silver-based catalyst, cooling the gas stream leaving this zone, supplying it after enrichment with oxygen and moderator to a second reaction zone containing the silver-based catalyst, recovering ethylene oxide and recycling the residual gases after being combined with fresh reacting gases, the reaction temperature of the second zone being at least 5.degree. C less than the temperature of the first zone.
摘要翻译： 通过将含有乙烯，氧气和氧化反应的缓和剂的气体混合物供给到含有银基催化剂的第一反应区域，冷却离开该区域的气流，将其供给氧气和调节剂供应至 含有银基催化剂的第二反应区，回收环氧乙烷并在与新鲜的反应气体结合后再循环剩余气体，第二区的反应温度比第一区的温度低至少5℃。
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公开(公告)号：US4091864A
公开(公告)日：1978-05-30
申请号：US685608
申请日：1976-05-12
申请人： Gioacchino Cocuzza , Giorgio Beghi
发明人： Gioacchino Cocuzza , Giorgio Beghi
CPC分类号： C09K5/16 , F28D20/003 , G21D5/08 , G21D9/00 , Y02E60/142 , Y02E70/30
摘要： An energy conversion, conveyance and utilisation system, particularly for providing process heat in industrial plants, which makes use of a source of heat such as a nuclear reactor to dissociate sulfur trioxide according to the reaction:2SO.sub.3 .revreaction.2SO.sub.2 + O.sub.2,the dissociation products being conveyed through a pipeline to a remote utilization station where the heat of recombination is utilized, the resulting sulfur trioxide being returned through the pipeline to the reactor site. The pipeline incorporates separate pipes in which the sulfur dioxide and sulfur trioxide are conducted in liquefied form, surrounded by a duct in which the gaseous oxygen flows.
摘要翻译： 能量转换，运输和利用系统，特别是用于在工业设备中提供工艺热量，其利用诸如核反应堆的热源来根据反应离解三氧化硫：
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公开(公告)号：US4094962A
公开(公告)日：1978-06-13
申请号：US783597
申请日：1977-04-01
申请人： Gioacchino Cocuzza , Giuseppe Musso
发明人： Gioacchino Cocuzza , Giuseppe Musso
CPC分类号： C01B17/05 , C01B3/04 , Y02E60/364
摘要： Hydrogen and sulfur are produced from hydrogen sulfide by reacting the latter with iodine in an aqueous solution of hydriodic acid, recovering the sulfur thus formed, removing any unreacted hydrogen sulfide from the solution, rectifying said solution thereby to obtain hydrogen iodide and a residual hydriodic acid solution and thermally dissociating the hydrogen iodide to form hydrogen and iodine. The hydrogen is separated by diffusion and recovered. The unreacted hydrogen sulfide thus removed, the residual solution and the iodine are recycled.
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