METHOD FOR THE PREPARATION OF MELAMINE

摘要

The invention relates to a high-pressure process for producing melamine from urea in which highly pure melamine is obtained by transferring melamine melt leaving a melamine reactor to a cooling vessel where the melamine melt is cooled to a temperature of between about 1 ~C and about 30 ~C above the melting point of melamine after which the liquid melamine can be transferred to a second cooling vessel in which vessel the melamine melt is further cooled using cold ammonia by which solid melamine is obtained.