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公开(公告)号：US20100189623A1
公开(公告)日：2010-07-29
申请号：US12602504
申请日：2008-06-09
IPC分类号： C01B21/24 , C07C211/00 , C01B7/01 , C01B17/90
CPC分类号： C01B7/055 , B01D15/00 , B01J20/18 , C01B7/0718 , C07C209/78 , C07C211/50
摘要： The invention relates to a process for recovering acids from product streams of organic syntheses, which comprises the steps a) neutralization of the acid with a base, b) removal of the base by means of adsorption, c) recovery of the acid.
摘要翻译： 本发明涉及从有机合成产物流中回收酸的方法，其包括步骤a）用碱中和酸，b）通过吸附除去碱，c）回收酸。
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公开(公告)号：US08466320B2
公开(公告)日：2013-06-18
申请号：US12602504
申请日：2008-06-09
IPC分类号： C07C211/00
CPC分类号： C01B7/055 , B01D15/00 , B01J20/18 , C01B7/0718 , C07C209/78 , C07C211/50
摘要： The invention relates to a process for recovering acids from product streams of organic syntheses, which comprises the steps a) neutralization of the acid with a base, b) removal of the base by means of adsorption, c) recovery of the acid.
摘要翻译： 本发明涉及从有机合成产物流中回收酸的方法，其包括步骤a）用碱中和酸，b）通过吸附除去碱，c）回收酸。
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公开(公告)号：US20100105951A1
公开(公告)日：2010-04-29
申请号：US12521873
申请日：2008-01-02
IPC分类号： C07C211/09
CPC分类号： C07C209/78 , C07C209/84 , C07C211/50
摘要： The invention provides a process for preparing diphenylmethanediamine, comprising the steps of a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the acid with ammonia, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) treating the aqueous phase obtained in step c) with an oxide or hydroxide of an alkaline earth metal, e) separating off the ammonia obtained in step d).
摘要翻译： 本发明提供一种制备二苯基甲烷二胺的方法，包括以下步骤：a）在酸存在下使苯胺与甲醛反应，b）用氨中和酸，c）将反应混合物从步骤b）分离成水相， 有机相，d）用碱土金属的氧化物或氢氧化物处理步骤c）中获得的水相，e）分离步骤d）中得到的氨。
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公开(公告)号：US08329951B2
公开(公告)日：2012-12-11
申请号：US12521873
申请日：2008-01-02
IPC分类号： C09B11/02
CPC分类号： C07C209/78 , C07C209/84 , C07C211/50
摘要： The invention provides a process for preparing diphenylmethanediamine, comprising the steps of a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the acid with ammonia, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) treating the aqueous phase obtained in step c) with an oxide or hydroxide of an alkaline earth metal, e) separating off the ammonia obtained in step d).
摘要翻译： 本发明提供一种制备二苯基甲烷二胺的方法，包括以下步骤：a）在酸存在下使苯胺与甲醛反应，b）用氨中和酸，c）将反应混合物从步骤b）分离成水相， 有机相，d）用碱土金属的氧化物或氢氧化物处理步骤c）中获得的水相，e）分离步骤d）中得到的氨。
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公开(公告)号：US08558026B2
公开(公告)日：2013-10-15
申请号：US12675187
申请日：2008-08-13
IPC分类号： C07C263/00
CPC分类号： B01J12/00 , C07C263/10 , C07C265/14
摘要： The present invention relates to a process for preparing isocyanates.
摘要翻译： 本发明涉及一种制备异氰酸酯的方法。
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公开(公告)号：US20130150620A1
公开(公告)日：2013-06-13
申请号：US13761997
申请日：2013-02-07
IPC分类号： B01J12/00
CPC分类号： B01J12/00 , C07C263/10 , C07C265/14
摘要： The invention relates to a process for preparing an isocyanate, which involves contacting fluid streams of amine, phosgene and inert medium in at least one mixing device, such that an inert medium stream is metered at least between one amine stream and one phosgene stream within the mixing device, and then reacting an amine with phosgene in a reaction chamber to form an isocyanate. In this process the inert medium stream is metered such that a point of first contact of the amine and the phosgene occurs at a distance from a surface of the mixing device, and a turbulent flow is present in the reaction chamber.
摘要翻译： 本发明涉及一种制备异氰酸酯的方法，其包括使胺，光气和惰性介质的流体流在至少一个混合装置中接触，使得惰性介质流至少在一个胺流和一个光气流之间计量 混合装置，然后使胺与光气在反应室中反应以形成异氰酸酯。 在该方法中，计量惰性介质流，使得胺和光气的第一次接触点在与混合装置的表面相距一定距离处发生，并且反应室中存在湍流。
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公开(公告)号：US20120004446A1
公开(公告)日：2012-01-05
申请号：US13256541
申请日：2010-03-18
IPC分类号： C07C263/10 , B01J19/00
CPC分类号： C07B43/10 , B01J2219/00873 , C07C263/10 , F28D7/00 , F28D13/00 , C07C265/14 , C07C265/00
摘要： The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, in which phosgene and amine are first evaporated and then superheated further to reaction temperature, and the superheated phosgene and amine are mixed and fed to a reactor in which the phosgene and the amine are converted to the isocyanate, wherein the residence time of the phosgene at temperatures greater than 300° C. is not more than 5 s, and/or the temperature of heat transfer surfaces in contact with phosgene is not more than 20 K above the phosgene temperature to be established. The invention further relates to an apparatus for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase.
摘要翻译： 本发明涉及通过使气相中相应的胺与光气反应制备异氰酸酯的方法，任选地在惰性介质存在下，首先将光气和胺蒸发，然后进一步过热至反应温度，过热的光气 和胺混合并加入到光气和胺转化为异氰酸酯的反应器中，其中光气在大于300℃的温度下的停留时间不超过5秒，和/或 与光气接触的传热表面不超过要建立的光气温度20K。 本发明还涉及通过气相中相应的胺与光气反应制备异氰酸酯的装置。
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公开(公告)号：US20120004445A1
公开(公告)日：2012-01-05
申请号：US13256523
申请日：2010-04-07
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C263/20 , C07C265/00
摘要： The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in which phosgene and amine are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas which comprises isocyanate and hydrogen chloride leaving the reactor is cooled in a quench by adding a liquid quench medium to form a mixture of reaction gas and quench medium as the product stream. The walls of the quench are essentially completely wetted with a liquid.
摘要翻译： 本发明涉及通过使相应的胺与光气反应制备异氰酸酯的方法，任选地在惰性介质存在下，将光气和胺首先在反应器中混合并转化成异氰酸酯，其中反应气体 包括异氰酸酯和氯化氢，离开反应器通过加入液体骤冷介质在骤冷中冷却以形成作为产物流的反应气体和骤冷介质的混合物。 骤冷壁基本上完全用液体润湿。
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公开(公告)号：US08487127B2
公开(公告)日：2013-07-16
申请号：US13035166
申请日：2011-02-25
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, in the presence or absence of an inert medium, which comprises the following steps: (a) vaporization of the amine in a vaporizer, (b) superheating of the amine, (c) mixing of the gaseous amine with the phosgene and introduction into a reaction zone, (d) reaction of amine and phosgene to give isocyanate in the reaction zone, with a reaction mixture comprising isocyanate and hydrogen chloride being formed, (e) cooling of the reaction mixture comprising isocyanate and hydrogen chloride, wherein the vaporizer comprises a vessel in which tubes through which a heating medium flows are comprised, where number and diameter of the tubes are designed so that the tubes have a specific heat transfer area based on the volume through which the amine flows of at least 300 m2/m3.
摘要翻译： 本发明涉及通过在惰性介质存在或不存在的情况下使气相中相应的胺与光气反应来制备异氰酸酯的方法，其包括以下步骤：（a）蒸发器中胺的蒸发，（b ）胺的过热，（c）将气态胺与光气混合并引入反应区，（d）胺和光气在反应区中反应得到异氰酸酯，反应混合物包含异氰酸酯和氯化氢 形成（e）包含异氰酸酯和氯化氢的反应混合物的冷却，其中蒸发器包括容器，其中包含加热介质流过的管，其中管的数量和直径被设计成使得管具有特定的 基于胺流动的体积至少为300m 2 / m 3的传热面积。
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10.发明申请PROCESS FOR PREPARING ISOCYANATES BY PHOSGENATION OF THE CORRESPONDING AMINES IN THE GAS PHASE 有权通过在气相中相应的相关氨基酸来制备异氰酸酯的方法公开(公告)号：US20130137892A1
公开(公告)日：2013-05-30
申请号：US13687670
申请日：2012-11-28
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： A process for preparing isocyanates by phosgenation of the corresponding amines in a fluidized-bed reactor (R), wherein a gas stream (1) comprising the phosgene is used as fluidizing gas and keeps an inert solid in suspension and a liquid stream (2) comprising the amine is fed into the fluidized bed, with the amine vaporizing partially or completely and reacting with the phosgene to give a reaction gas mixture which comprises the corresponding isocyanate and is taken off from the fluidized-bed reactor (R) is proposed.
摘要翻译： 一种通过流化床反应器（R）中相应的胺光气化制备异氰酸酯的方法，其中将包含光气的气流（1）用作流化气体并保持惰性固体悬浮液和液体流（2） 其中胺被加入到流化床中，其中胺蒸发部分或完全并与光气反应，得到包含相应的异氰酸酯并从流化床反应器（R）中取出的反应气体混合物。
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