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US09051243B2 Process for the preparation of isocyanates in the gas phase 有权
在气相中制备异氰酸酯的方法

Process for the preparation of isocyanates in the gas phase
摘要：
Isocyanates are produced by reacting a primary amine with phosgene in the gas phase. In this process, the amine is vaporized and then superheated prior to introduction into the reactor. The amine is superheated to a temperature at least 10° C. above dew point before entry into the reactor. A pressure difference between the vaporizer and entry into the reactor of from 1 to 500 mbar is maintained.
摘要（中）：

异氰酸酯是通过在气相中使伯胺与光气反应来制备的。 在该方法中，胺被蒸发，然后在引入反应器之前过热。 胺在进入反应器之前过热至高于露点至少10℃的温度。 蒸发器和进入反应器的压差保持在1至500毫巴之间。

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