Method for the separation of impurities from a hot synthesis...

Details Method for the separation of impurities from a hot synthesis... Method for the separation of impurities from a hot synthesis...

B - Operations, Transporting

01

D

B01D 39/20 (2006.01) C07D 251/60 (2006.01) C07D 251/62 (2006.01)

Patent

CA 2185557

The invention relates to an improved method for the separation by means of filters of impurities from a hot synthesis gas mixture obtained in the preparation of melamine from urea, involving filters made of sintered, essentially pure chromium, molybdenum, tungsten, or mixtures of these elements.

Procédé perfectionné de séparation à l'aide de filtres des impuretés d'un mélange de gaz de synthèse à chaud obtenu lors de la préparation de mélamine à partir d'urée, lesdits filtres étant constitués de chrome, molybdène ou tungstène fritté et essentiellement pur, ou de leurs mélanges.

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