Method for feeding a fluid to a gas phase polymerization reactor
AssigneeBasell Poliolefine Italia S.r.l.
InventorsENRICO BALESTRA, TIZIANA CAPUTO, MASSIMO COVEZZI, MAURIZIO DORINI, ANTONIO MAZZUCCO, GABRIELE MEI, RICARDO RINALDI
Life of this patent
Estimating the term…
Abstract
A fluid is fed into a polymer bed of a fluidized bed gas phase polymerization reactor by introducing the fluid into the polymer bed through a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end positioned so that the following equation is fulfilled: d/D>0.002 wherein d is the distance of the distributor's discharge end from the wall of the reactor, and D is the diameter of the reactor in the fluidized bed zone.
Claims12
A method for feeding a fluid into a polymer bed of a fluidized bed gas phase polymerization reactor comprising the step of:
- introducing a controlled and continuous flow rate of the fluid into the polymer bed through a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end positioned so that the following equation is fulfilled:
- d/D>0.002
- wherein d is the distance of the distributor's discharge end from the wall of the reactor, and D is the diameter of the reactor in the fluidized bed zone.
A fluidized bed gas phase polymerization reactor comprising:
- a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end positioned so that the following equation is fulfilled:
- d/D>0.002
- wherein d is the distance of the distributor's discharge end from the wall of the reactor, and D is the diameter of the reactor in the fluidized bed zone.
A process for the preparation of polyolefins comprising the step of:
- feeding a fluid into a polymer bed of a fluidized bed gas phase polymerization reactor by introducing a controlled and continuous flow rate of the fluid into the polymer bed through a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end positioned so that the following equation is fulfilled:
- d/D>0.002
- wherein d is the distance of the distributor's discharge end from the wall of the reactor, and D is the diameter of the reactor in the fluidized bed zone.
Dependencies are inferred from the claim text.