Two-stage reactor for the production of melamine

Two-stage reactor for the production of melamine

The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably high...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HARTH KLAUS, GETER REINER, RAHN RALF-THOMAS, GRABLER THOMAS, KUHRS CHRISTIAN, DANZ ECKEHARD, HOLZLE MARKUS, STEINER WOLFGANG
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably higher Lewis acidity is used in the after-reactor.