阅读说明：本技术 在气相中制备异氰酸酯的方法 (Method for producing isocyanates in the gas phase ) 是由 J.策希林 T.施特滕 于 2018-06-06 设计创作，主要内容包括：本发明涉及通过相应伯胺在气相中的光气化而制备异氰酸酯的方法,其中通过与至少一个骤冷液料流接触而将粗制气态反应产物混合物冷却和部分冷凝,并在进一步冷却后使用冷凝的反应产物混合物的一部分作为所述至少一个骤冷液料流的成分,任选唯一成分,其中所用总骤冷液包含基于其总质量计最多25质量%比例的有机溶剂,其中相对于100质量%的余量由至少要制备的异氰酸酯构成,其中在骤冷液的影响下反应产物混合物的未冷凝的部分也在洗涤塔中脱除异氰酸酯组分,其中获得包含洗涤液和异氰酸酯的液体料流,其具有基于其总质量计0.0质量%至10.0质量%,尤其是0.0质量%至5.0质量%的有机溶剂比例。(The invention relates to a method for producing isocyanates by phosgenation of the corresponding primary amines in the gas phase, wherein a crude gaseous reaction product mixture is cooled and partially condensed by contact with at least one quenching liquid stream, and using a portion of the condensed reaction product mixture, after further cooling, as a component, optionally the only component, wherein the total quench liquid used comprises a proportion of organic solvent of at most 25% by mass, based on its total mass, wherein the balance with respect to 100% by mass is constituted by at least the isocyanate to be prepared, wherein the uncondensed part of the reaction product mixture is also freed of isocyanate components in the washing column under the influence of the quench liquid, wherein a liquid stream comprising washing liquor and isocyanate is obtained which has a proportion of organic solvent of from 0.0 to 10.0 mass%, in particular from 0.0 to 5.0 mass%, based on its total mass.)