초록 ▼

A method of reducing the purge gas consumption, dry-down time, or both required for start-up and operation of a gas phase fluidized bed reactor system. The method involves contacting a stream of cycle gas having water and/or a polar hydrocarbon with an adsorbing material while the cycle gas is in a

A method of reducing the purge gas consumption, dry-down time, or both required for start-up and operation of a gas phase fluidized bed reactor system. The method involves contacting a stream of cycle gas having water and/or a polar hydrocarbon with an adsorbing material while the cycle gas is in a closed circulation loop.

대표청구항 ▼

[ What is claimed is:] [1.] A method for the continuous polymerization of monomer to produce polymer in a fluidized bed reactor which comprises: preconditioning the reactor by,a) continuously cycling a gaseous stream comprising said monomer through said fluidized bed reactor;b) continuously or inter

[ What is claimed is:] [1.] A method for the continuous polymerization of monomer to produce polymer in a fluidized bed reactor which comprises: preconditioning the reactor by,a) continuously cycling a gaseous stream comprising said monomer through said fluidized bed reactor;b) continuously or intermittently passing said gaseous stream through an adsorbent bed to thereby reduce the amount of at least one of and, any water and polar compounds present therein to a level below 200 ppmv; thereafterc) dispersing a particulate seed bed into the polymerization zone of said reactor; and thereafterd) continuously or intermittently introducing a suitable catalyst into said polymerization zone while maintaining the temperature within the said polymerization zone below the sintering temperature of said catalyst;e) continuously or intermittently removing polymer from said reaction zone; andf) continuously adding monomer to said gaseous stream to replace monomer which becomes polymerized and is removed as polymer.