초록

A process for maintaining the electrostatic charges substantially at neutral levels thereby reducing or avoiding sheeting in a fluid bed gas phase olefin polymerization reactor.

대표청구항 ▼

[ What is claimed is:] [1.] A method for reducing sheeting in an operating gas phase fluidized bed olefin polymerization reactor, under olefin polymerization conditions, wherein the method comprisesmonitoring electrostatic level in the reactor,wherein the electrostatic level can be neutral, positive

[ What is claimed is:] [1.] A method for reducing sheeting in an operating gas phase fluidized bed olefin polymerization reactor, under olefin polymerization conditions, wherein the method comprisesmonitoring electrostatic level in the reactor,wherein the electrostatic level can be neutral, positive or negative;maintaining said conditions under which a negative electrostatic level develops in the reactor;feeding to the reactor a positive charge inducing quantity of a reagent selected from the group consisting of tetraethylorthosilicate, tetrapropyl orthosilicate and tetra butylorthosilicate and neutralizing said electrostatic level.