Dry feed in forming slurry in olefin polymerization

Claim 1

IN THE POLYMERIZATION OF AN OLEFIN IN A SOLVENT HAVING A SOLID CATALYST SLURRIED THEREIN, WHEREIN CATALYST SOLVENT AND OLEFIN ARE CONTINUOUSLY CONTACTED IN A REACTOR FOR POLYMERIZATION AND A PORTION OF THE REACTOR CONTENTS IS CONTINUOSLY WITHDRAWN FOR RECOVERY OF ITS POLYOLEFIN CONTENT, THE IMPROVEMENT WHICH COMPRISES CONTINUOUSLY ADDING SAID CATALYST TO A ZONE WHICH COMMUNICATES WITH SAID REACTOR BELOW THE LEVEL OF SILVENT THEREIN, AND INTRODUCING A GAS INTO SAID ZONE AT A PRESSURE SUFFICIENT TO CARRY SAID SOLID CATALYST THEREWITH INTO SAID REACTOR SO THAT SAID CATALYST ENTERS SAID REACTOR IN DRY CONDITION FIRST CONTACTING SAID SOLVENT WITHIN SAID REACTOR AT A LOCATION BEYOND THAT AT WHICH SAID GAS FIRST ENTERS SAID REACTOR.