Process for preparing a gaseous isocyanic acid-ammonia mixture with a low cyanuric-acid content, and device therefor

Abstract

Abstract 1. Process for the preparation of an isocyanic acid/ammonia gas mixture having a low cyanuric acid content by heating molten urea, which is blown into a fluidized bed consisting of an inert material, to temperatures of 300 to 480 degrees C in the course of less than 1 second, characterized in that the molten urea is sprayed, into the fluidized bed, 35 to 200 mm above the inlet point of the fluidizing gas, at an outlet velocity of 3 to 15 m/second, parallel to the direction of flow of the fluidizing gas and at a minimum distance of 300 mm from wall surfaces and/or surfaces serving for heat exchange.

Inventors

• 👤 Peter Dipl.-Ing. Weiss
• 👤 Rudolf Dr. Sykora

Bibliographic Details