| 摘要 |
Method for preparing melamine from urea via a high-pressure process in which solid melamine is obtained by transferring the reactor product comprising liquid melamine, CO2 and NH3 to a gas/liquid separator and subsequently transferring the melamine melt coming from the separator to a vessel where the melamine melt is cooled with an evaporating cooling medium, characterized in that, the gas/liquid separation is conducted by addition of 5.10-4-2.10-2 mole of water per mole of melamine.
|
