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公开(公告)号：US07555917B2
公开(公告)日：2009-07-07
申请号：US10787608
申请日：2004-02-26
IPC分类号： F25J3/00
CPC分类号： B01D53/002 , C01B7/0706
摘要： High boiling contaminants such as chloro-aromatic compounds are removed from a gas by compressing the gas containing the contaminant, cooling the compressed gas to reduce the temperature of the gas to at least 20° C. above the outlet temperature of a second cooling stage but above the freezing point of the highest melting compound in the first cooling stage, further cooling the gas in a second cooling stage to at least −20° C., returning cooled gas from the second cooling stage to the first cooling stage, and recovering condensate streams which contain the contaminant compound from the first and second cooling stages. An apparatus suitable for carrying out this process is also disclosed. The process of the present invention is particularly useful for removing chloro-aromatic compounds from anhydrous hydrogen chloride gas.
摘要翻译： 通过压缩含有污染物的气体从气体中除去高沸点污染物，例如氯 - 芳族化合物，冷却压缩气体，将气体的温度降低至高于第二冷却阶段的出口温度至少20℃，但是 高于第一冷却阶段中最高熔融化合物的凝固点，在第二冷却阶段进一步将气体冷却至至少-20℃，将冷却的气体从第二冷却段返回到第一冷却阶段，并回收冷凝物 含有来自第一和第二冷却阶段的污染化合物的物流。 还公开了一种适于实施该方法的装置。 本发明的方法特别适用于从无水氯化氢气体中除去氯代芳族化合物。
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公开(公告)号：US06719957B2
公开(公告)日：2004-04-13
申请号：US10124795
申请日：2002-04-17
IPC分类号： C01B707
CPC分类号： B01D53/002 , C01B7/0706
摘要： High boiling contaminants such as chloro-aromatic compounds are removed from a gas by compressing the gas containing the contaminant, cooling the compressed gas to reduce the temperature of the gas to at least 20° C. above the outlet temperature of a second cooling stage but above the freezing point of the highest melting compound in the first cooling stage, further cooling the gas in a second cooling stage to at least −20° C., returning cooled gas from the second cooling stage to the first cooling stage, and recovering condensate streams which contain the contaminant compound from the first and second cooling stages. An apparatus suitable for carrying out this process is also disclosed. The process of the present invention is particularly useful for removing chloro-aromatic compounds from anhydrous hydrogen chloride gas.
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3.发明授权Process for separating mixtures of materials having different boiling points 有权用于分离具有不同沸点的材料的混合物的方法公开(公告)号：US06359177B1
公开(公告)日：2002-03-19
申请号：US09738297
申请日：2000-12-15
IPC分类号： C07C20900
CPC分类号： C07C209/86 , C07C211/50
摘要： A mixture of materials having different boiling points is separated into fractions having different boiling points. The separated fraction containing the desired product is stripped using the vapors of a lower boiling fraction. The process of the present invention is particularly useful for recovering a desired isomer or isomer mixture from a technical mixture obtained during production of an aromatic amine such as toluenediamine. Little or no unwanted isomer or by-product is present in the isomer or isomer mixture product of this process.
摘要翻译： 具有不同沸点的材料的混合物被分离成具有不同沸点的级分。 使用较低沸点馏分的蒸汽汽提含有所需产物的分离馏分。 本发明的方法特别可用于从芳族胺如甲苯二胺制备期间获得的技术混合物中回收所需的异构体或异构体混合物。 在该方法的异构体或异构体混合物产物中不存在或不存在不需要的异构体或副产物。
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4.发明授权公开(公告)号：US07312362B2
公开(公告)日：2007-12-25
申请号：US11657338
申请日：2007-01-24
IPC分类号： C07C209/24
CPC分类号： C07C209/78 , C07C209/84 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The present invention relates to a process for the production of mixtures of di- and polyamines of the diphenylmethane series (MDA) containing less than 1,000 ppm of water and less than 200 ppm of aniline by reaction of aniline and formaldehyde in the presence of acid catalysts and subsequent separation of the acid catalyst and subsequent distillative separation of water and aniline in an at least a two-stage distillation including a flash evaporation and subsequent cooling.
摘要翻译： 本发明涉及一种在酸催化剂存在下通过苯胺和甲醛的反应生产含有少于1,000ppm水和小于200ppm苯胺的二苯基甲烷系列（MDA）的二胺和多胺的混合物的方法 随后分离酸催化剂，随后在包括闪蒸和随后冷却的至少两阶段蒸馏中进行水和苯胺的蒸馏分离。
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公开(公告)号：US10143987B2
公开(公告)日：2018-12-04
申请号：US12544267
申请日：2009-08-20
申请人： Berthold Keggenhoff , Jeffrey Bolton , Friedhelm Steffens , Marc Seekamp , Gerhard Ruffert , Jürgen Kern , Thomas Runowski
发明人： Berthold Keggenhoff , Jeffrey Bolton , Friedhelm Steffens , Marc Seekamp , Gerhard Ruffert , Jürgen Kern , Thomas Runowski
摘要： One or more fluid streams are uniformly divided into two or more partial fluid streams in chemical apparatuses in a manner such that there is a reduced tendency to form deposits. Division of such stream(s) is achieved by using a distributor device that includes at least one plate having two or more openings which openings are rounded or chamfered on at least one side.
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公开(公告)号：US08153838B2
公开(公告)日：2012-04-10
申请号：US12164716
申请日：2008-06-30
申请人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kämper , Berthold Keggenhoff
发明人： Andreas Bulan , Rainer Weber , Wolfgang Lorenz , Gerhard Moormann , Friedhelm Kämper , Berthold Keggenhoff
IPC分类号： C07C263/00
CPC分类号： C07C263/10 , C07C263/20 , C25B1/26 , C07C265/14
摘要： An isocyanate is produced by: (a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).
摘要翻译： 通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d） ，纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。
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公开(公告)号：US07442835B2
公开(公告)日：2008-10-28
申请号：US11211898
申请日：2005-08-25
IPC分类号： C07C51/58
CPC分类号： B01J8/0085 , B01J8/067 , B01J19/002 , B01J2208/00221 , B01J2208/00522 , B01J2208/00539 , B01J2208/00849 , B01J2208/025 , B01J2219/00268 , C01B32/80 , Y02P20/124
摘要： The invention relates to a process for the production of phosgene, in which chlorine and carbon monoxide are reacted in the presence of an activated charcoal catalyst in a shell-and-tube reactor which contains a plurality of reaction tubes and a coolant space surrounding the reaction tubes, in which a) cooling of the reaction tubes is from the outside through the coolant space with water by evaporative cooling, and b) operation of the reaction tubes is at a pressure above the pressure in the coolant space.
摘要翻译： 本发明涉及一种生产光气的方法，其中氯和一氧化碳在活性炭催化剂存在下在壳管式反应器中反应，其中包含多个反应管和围绕反应的冷却剂空间 管，其中a）通过蒸发冷却将反应管的冷却从外部通过冷却剂空间与水，以及b）反应管的操作处于高于冷却剂空间中的压力的压力。
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公开(公告)号：US07122701B2
公开(公告)日：2006-10-17
申请号：US10454332
申请日：2003-06-04
IPC分类号： C07C209/00
CPC分类号： C07C209/36 , C07C201/08 , C07C201/16 , C07C211/51 , C07C205/06
摘要： Aromatic amines are produced from aromatic hydrocarbons by a) reacting the aromatic hydrocarbon(s) with a mixture of nitric acid and sulfuric acid to generate a two-phase reaction mixture, b) separating the reaction mixture into an aqueous acid phase and an organic phase containing the nitroaromatic compounds c) washing the organic phase to purify the nitroaromatic compound(s), d) hydrogenating the nitroaromatic compound(s) in the presence of a catalyst to produce the aromatic amine(s) and water of reaction, and e) separating the water of reaction formed in step d) from the aromatic amine(s), in which the water of reaction separated in step e) is used to wash the organic phase containing the nitroaromatic compounds in step c).
摘要翻译： 通过以下方式由芳族烃制备芳族胺：a）使芳族烃与硝酸和硫酸的混合物反应以产生两相反应混合物，b）将反应混合物分离成酸性水相和有机相 含有硝基芳族化合物c）洗涤有机相以纯化硝基芳族化合物，d）在催化剂存在下氢化硝基芳族化合物以产生芳族胺和反应水，e） 将步骤d）中形成的反应的水与芳族胺分离，其中步骤e）中分离的反应水用于洗涤步骤c）中含有硝基芳族化合物的有机相。
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公开(公告)号：US4745216A
公开(公告)日：1988-05-17
申请号：US715716
申请日：1985-03-25
IPC分类号： C07C265/00 , C07C67/00 , C07C71/00 , C07C241/00 , C07C263/10 , C07C265/14
CPC分类号： C07C263/10 , C07C263/20
摘要： Polyisocyanates are produced by reacting a polyamide solution with a phosgene solution. After the product polyisocyanate has been recovered, the solvent or a portion of the solvent employed is treated with crosslinked polymers insoluble in the solvent which polymers contain primary and/or secondary alcoholic hydroxyl groups and/or primary and/or secondary amino groups. After treatment, the polymer and any reaction products are removed. The solvent may then be reused. Preferred solvents are chlorobenzene and o-dichlorobenzene. The preferred polymers are bead polymers or bead copolymers of (meth)acrylic acid or styrene/divinyl benzene copolymer.
摘要翻译： 聚异氰酸酯通过聚酰胺溶液与光气溶液反应制备。 在产物多异氰酸酯已被回收之后，溶剂或所用溶剂的一部分用不溶于溶剂的交联聚合物处理，该聚合物含有伯和/或仲醇羟基和/或伯和/或仲氨基。 处理后，除去聚合物和任何反应产物。 然后可以重新使用溶剂。 优选的溶剂是氯苯和邻二氯苯。 优选的聚合物是（甲基）丙烯酸或苯乙烯/二乙烯基苯共聚物的珠粒聚合物或珠粒共聚物。
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10.发明申请公开(公告)号：US20070179317A1
公开(公告)日：2007-08-02
申请号：US11657338
申请日：2007-01-24
IPC分类号： C07C209/24
CPC分类号： C07C209/78 , C07C209/84 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The present invention relates to a process for the production of mixtures of di- and polyamines of the diphenylmethane series (MDA) containing less than 1,000 ppm of water and less than 200 ppm of aniline by reaction of aniline and formaldehyde in the presence of acid catalysts and subsequent separation of the acid catalyst and subsequent distillative separation of water and aniline in an at least a two-stage distillation including a flash evaporation and subsequent cooling.
摘要翻译： 本发明涉及一种在酸催化剂存在下通过苯胺和甲醛的反应生产含有少于1,000ppm水和小于200ppm苯胺的二苯基甲烷系列（MDA）的二胺和多胺的混合物的方法 随后分离酸催化剂，随后在包括闪蒸和随后冷却的至少两阶段蒸馏中进行水和苯胺的蒸馏分离。
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