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1. 发明授权

US06803483B2 Process for the purification of mixtures of toluenediisocyanate 有权
标题翻译：纯化甲苯二异氰酸酯混合物的方法
公开(公告)号：US06803483B2
公开(公告)日：2004-10-12
申请号：US10457105
申请日：2003-06-09
申请人： Heinrich Lokum , Ove Nommensen , Hermann Dallmeyer , Wilhelm Hagen
发明人： Heinrich Lokum , Ove Nommensen , Hermann Dallmeyer , Wilhelm Hagen
IPC分类号： C07C26300
CPC分类号： C07C263/20 , C07C265/14
摘要： A process for the purification of toluenediisocyanate by fractionating a crude distillation feed containing toluenediisocyante, an organic solvent and less than 2% by weight of phosgene in a heat integrated system having an upstream distillation column, an interchanger and a downstream distillation column which are connected in series. The vapor which is recovered from the upstream distillation column is used to reboil the bottoms product of the downstream distillation column or the feed to the downstream distillation column in the interchanger. The crude distillation feed comprising less than 2% by weight of phosgene is fractionated into three product fractions P1-P3 and optionally a fourth fraction P4. P1 is a noncondensible gas stream enriched with phosgene and/or low-boilers. P2 is a solvent-enriched product. P3 is a high boiler enriched bottoms product comprising toluenediisocyanate, and P4 is a toluenediisocyanate enriched stream lean in highboilers and reaction residues.
摘要翻译：一种通过在含有甲苯二异氰酸酯，有机溶剂和小于2重量％的光气的粗蒸馏进料在具有上游蒸馏塔，交换器和下游蒸馏塔的热集成系统中分级来净化甲苯二异氰酸酯的方法，所述上游蒸馏塔，系列。从上游蒸馏塔回收的蒸气用于将下游蒸馏塔的塔底产物或交换器中的下游蒸馏塔的进料再沸腾。包含小于2重量％的光气的原油蒸馏进料分馏成三个产物馏分P1-P3和任选的第四馏分P4。 P1是富含光气和/或低锅炉的不可冷凝气流。 P2是富溶剂的产品。 P3是含有甲苯二异氰酸酯的高锅炉富集底部产物，P4是富含甲苯二异氰酸酯的富含高沸物和反应残余物的料流。

2. 发明授权

US4493434A Valve system for pressurized vessels 失效
标题翻译：用于加压容器的阀门系统
公开(公告)号：US4493434A
公开(公告)日：1985-01-15
申请号：US472061
申请日：1983-03-04
申请人： Holger Beaujean , Willi Kamphausen , Dieter Niephaus , Ove Nommensen
发明人： Holger Beaujean , Willi Kamphausen , Dieter Niephaus , Ove Nommensen
IPC分类号： F17C13/06 , F16K1/30 , F17C13/04
CPC分类号： F16K1/306 , F16K1/307 , F17C13/04 , F17C2201/0109 , F17C2203/0639 , F17C2205/0305 , F17C2205/0308 , F17C2205/0329 , F17C2205/0332 , F17C2205/0335 , F17C2205/0385 , F17C2205/0394 , F17C2223/0161 , F17C2223/033 , F17C2250/0636 , Y10T137/86976
摘要： A valve for a pressure bottle or vessel adapted to contain a dangerous fluid, such as a radioactive gas, can comprise two valve members in tandem which require actuation by separate operating members thereby eliminating the possibility for accidental or inadvertent opening. The main valve housing can be provided with a pressure equalization valve which opens when the bottle is immersed in a body of water at elevated water pressures to equalize the interior and exterior pressures while providing a water seal against escape of the bottle contents.
摘要翻译：用于容纳诸如放射性气体的危险流体的压力瓶或容器的阀可以包括串联的两个阀构件，其需要由单独的操作构件致动，从而消除了意外或无意的打开的可能性。主阀壳体可以设置有压力平衡阀，当瓶子在升高的水压下浸入水体中时打开，以平衡内部和外部压力，同时提供水封以防止瓶子内容物逸出。

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