Process for letting down ethylene high pressure...

Details Process for letting down ethylene high pressure... Process for letting down ethylene high pressure...

C - Chemistry, Metallurgy

08

F

402/619

C08F 10/02 (2006.01) B01J 3/00 (2006.01)

Patent

CA 1080895

O.Z. 32,091 ABSTRACT OF THE DISCLOSURE: The invention relates to a process for rapidly letting-down the pressure in continuous high pressure polymerization systems for the polymerization of ethylene. In this process, the let-down hot reac- tion mixture is passed into an expansion vessel in such a way that the jet of let-down hot reaction mixture issuing from the let-down line is led into the partially water-filled expansion vessel at an angle of from 0 to 45° to the water surface, so that the jet does not enter below the surface but must touch or strike it. The method described makes it possible to let the mixture down partially and thus to slow down the decomposition in the case of explosive decomposition reactions occurring in the polymerization system.

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