| 摘要 |
<p>The present invention provides a process for producing finely divided solid cyanuric chloride, which comprises injecting liquid cyanuric chloride into a separating column where it is cooled with recycle inert gases to an extent such that it separates out in a crystalline form, washing the thus heated cyanuric-chloride-vapour-containing gases in a succeeding wash column in countercurrent flow with an inert washing liquid, which dissolves cyanuric chloride, until said gases are essentially free from the cyanuric chloride vapour and simultaneously cools said gases, recycling the cooled gases to the separating chamber, reducing the temperature of the cyanuric-chloride-containing wash liquid so obtained to its initial value by recycling said liquid to said wash column through a cooler continuously raising the inside of a pipe line connected to the separating column and leading to the washing column with wash liquid and separating a partial flow of the cyanuric-chloride-containing wash liquid in a distillation column into pure liquid cyanuric chloride, which is recycled into the separating column, and pure wash liquor, which is recycled into the washing column.</p> |
