Process for polymerization of 1-olefins in presence of solid heat carrier

Claim 1

A PROCESS FOR VAPOR PHASE POLYMERIZING 1-OLEFINS OF 2 TO 8 CARBON ATOMS AND NO BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION IN CONTACT WITH A POLYMERIZATION CATALYST COMPRISING HEXAVALENT CHROMIUM AS THE OXIDE TO SOLID POLYMER, SAID PROCESS COMPRISING CONTINUOUSLY PASSING SAID 1-OLEFINS AND CATALYST ALONG WITH AN INERT SOLID HEAT CARRIER THROUGH A HORIZONTAL DISPLACED ELONGATED POLYMERIZATION ZONE BEING JACKETED WITH HEAT REMOVING SURFACES, CONVEYING REACTANTS AND HEAT CARRIER THROUGH SAID ZONE BY MEANS OF A SCREW OPERABLY MOUNTED IN SAID ZONE, MAINTAINING THE TEMPERATURE IN SAID ZONE WITHIN THE RANGE 100-245*F. BY TRANSFERRING HEAT OF POLYMERIZATION FROM POLYMERIZATION SITES TO SAID HEAT REMOVING SURFACES BY MEANS OF SAID HEAT CARRIER, WHEREBY A GREATER THROUGHPUT OF 1-OLEFIN THROUGH SAID POLYMERIZATION ZONE IS OBTAINABLE, AND CONTINUOUSLY REMOVING POLYMER, CATALYST AND HEAT CARRIER FROM SAID POLYMERIZATION ZONE.