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    • 2. 发明授权
    • Process for preparing isocyanates
    • 异氰酸酯的制备方法
    • US08809575B2
    • 2014-08-19
    • US13131123
    • 2009-11-30
    • Carsten KnoescheTorsten MattkePatric Mueller
    • Carsten KnoescheTorsten MattkePatric Mueller
    • C07C263/10
    • C07C263/10C07C265/00
    • 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 the amine and the phosgene are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas (1) which comprises isocyanate and hydrogen chloride leaving the reactor is cooled in a quench (3) by adding a liquid quench medium (5) to form a mixture of reaction gas and quench medium as the product stream (7). The quench medium (5) used is a mixture which comprises at least one solvent and isocyanate and which is withdrawn from the preparation process, any solid particles present in the quench medium (5) being removed before addition to the quench (3).
    • 本发明涉及一种制备异氰酸酯的方法,任选在惰性介质存在下,在气相中使相应的胺与光气反应,其中胺和光气首先在反应器中混合并转化成异氰酸酯,以及 其中通过加入液体骤冷介质(5)将通过离开反应器的包含异氰酸酯和氯化氢的反应气体(1)在淬火(3)中冷却,形成作为产物流(7)的反应气体和骤冷介质的混合物 )。 使用的骤冷介质(5)是包含至少一种溶剂和异氰酸酯并从制备过程中排出的混合物,在加入骤冷(3)之前,将骤冷介质(5)中存在的任何固体颗粒除去。
    • 3. 发明授权
    • Process for preparing isocyanates
    • 异氰酸酯的制备方法
    • US08779181B2
    • 2014-07-15
    • US13123787
    • 2009-10-08
    • Torsten MattkeCarsten Knoesche
    • Torsten MattkeCarsten Knoesche
    • C07C263/10C07C265/14
    • C07C263/10C07C265/14
    • The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, if appropriate in the presence of an inert medium, in which the amine and the phosgene are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas which comprises isocyanate and hydrogen chloride and leaves the reactor is cooled in a quench space of a quench by adding a quench medium. The quench medium on addition to the quench space has a temperature above the condensation temperature or the desublimation temperature of the reaction gas.
    • 本发明涉及通过在气相中使相应的胺与光气反应制备异氰酸酯的方法,如果合适的话,在惰性介质的存在下,首先将胺和光气混合并转化成反应器中的异氰酸酯, 并且其中包含异氰酸酯和氯化氢并离开反应器的反应气体通过加入骤冷介质在骤冷骤冷空间中冷却。 淬火介质除了淬火空间之外,还具有高于冷凝温度或反应气体的冷凝温度的温度。
    • 4. 发明授权
    • Process for preparing isocyanates
    • 异氰酸酯的制备方法
    • US08765996B2
    • 2014-07-01
    • US13001681
    • 2009-07-23
    • Carsten KnoescheTorsten Mattke
    • Carsten KnoescheTorsten Mattke
    • C07C263/10C07C265/14
    • C07C263/10C07C265/14
    • The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, if appropriate in the presence of at least one inert medium, the phosgene being passed into a reactor (21) through a first inlet and the amine through a second inlet of an ejector (1). The first inlet and the second inlet open into a mixing zone (17) in which the phosgene and the amine are mixed to give a reaction mixture. The mixing zone (17) is followed downstream by a diffuser (19) in which pressure and temperature of the reaction mixture composed of phosgene and amine are increased.
    • 本发明涉及通过在气相中使相应的胺与光气反应来制备异氰酸酯的方法,如果合适的话,在至少一种惰性介质的存在下,光气通过第一入口进入反应器(21) 通过喷射器(1)的第二入口。 第一入口和第二入口进入混合区(17),其中将光气和胺混合以产生反应混合物。 混合区(17)在下游被扩散器(19)跟随,其中由光气和胺组成的反应混合物的压力和温度增加。
    • 7. 发明申请
    • PROCESS FOR PREPARING ISOCYANATES IN THE GAS PHASE
    • 在气相中制备异氰酸酯的方法
    • US20110213177A1
    • 2011-09-01
    • US13035166
    • 2011-02-25
    • Torsten MattkeRalf BöhlingCarsten KnöscheVanessa Simone Lehr
    • Torsten MattkeRalf BöhlingCarsten KnöscheVanessa Simone Lehr
    • C07C263/10
    • C07C263/10C07C265/14
    • 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.
    • 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。