METHOD OF CLEANING DISTRIBUTION OF TRAY IN REACTOR SYSTEM WITH FLUIDISED BED Russian patent published in 2013 - IPC B01J8/18 B01J8/24 C08F2/34 

FIELD: process engineering.

SUBSTANCE: invention relates to cleaning of distribution tray in polymerisation reactor system with fluidised bed. One of proposed versions comprises: first mode wherein cleaning is performed at approximately normal base magnitude of reduced rate of gas in polymerisation reactor system with fluidised bed. Said system comprises reactor vessel, circulation circuit and distribution tray arranged in said vessel nearby its inlet. In second mode, gas reduced rate is increased to magnitudes exceeding said base magnitude in aforesaid first mode to the level sufficient for increasing circulating gas temperature at inlet to temperatures higher than circulating gas mean temperature at inlet in aforesaid first mode and to the level sufficient for displacement of dirt from distribution tray holes.

EFFECT: reduced or eliminated clogging of distribution tray without switching off of the system.

34 cl, 5 ex, 9 dwg