公开(公告)号：MY152284A

公开(公告)日：2014-09-15

申请号：MYPI20101583

申请日：2008-10-14

Applicant: BASF SE

Inventor： KERN ANDREAS ,  PROBSTLE HANS-ULRICH ,  TILO JOHN ,  STEINER WOLFGANG ,  MAAS HEIKO

IPC: C07D251/60

Abstract: THE INVENTION RELATES TO A METHOD FOR THE PRODUCTION OF MELAMINE BY REACTION OF UREA IN THE PRESENCE OF A SOLID CATALYST IN ONE OR MORE SERIAL REACTORS IN THE TEMPERATURE RANGE 370°C TO 430 °C, COOLING AND FILTERING THE GASES PRODUCED IN THE UREA REACTION, SEPARATION OF THE MELAMINE BY DESUBLIMATION AND RECYCLING A PART OF THE GASES PRODUCED AFTER SEPARATION OF THE MELAMINE (?RECYCLE GAS?) INTO THE REACTOR OR REACTORS, CHARACTERISED IN THAT ALL GIVEN STEPS ARE CARRIED OUT AT A PRESSURE IN THE RANGE 4 BAR TO 10 BAR.