FIELD: technological processes.
SUBSTANCE: invention relates to the synthesis of melamine from urea. Reactor and an appropriate method for the synthesis of melamine from urea at a high pressure are described in the application. Reactor for the synthesis of melamine from urea using a non-catalytic process at high pressure has a vertical reactor vessel which comprises: internal reaction chamber and an external reaction chamber arranged around the inner chamber coaxially with it; at least one inlet for urea melt intended to introduce a urea melt into the internal reaction chamber; at least one channel for supplying the effluent from the inner chamber to the outer chamber; at least one ammonia inlet for introducing gaseous ammonia into an external reaction chamber serving as a secondary stripping reactor, and at least one melamine collector for collecting liquid melamine from an external reaction chamber.
EFFECT: invention provides stability of the occurrence of the reaction and limits the formation of by-products.
19 cl, 4 dwg
