公开(公告)号：US20210370255A1

公开(公告)日：2021-12-02

申请号：US16765090

申请日：2018-10-25

Applicant: Borealis AG

Inventor： Günter WEICKERT ,  Eric-Jan PRINSEN ,  Klaus NYFORS ,  Erno ELOVAINIO ,  Vasileios KANELLOPOULOS

IPC: B01J8/38 ,  B01J8/44 ,  B01J8/18 ,  C08F10/00

Abstract: The present invention relates to a method for improving the cooling capacity of a gas solids olefin polymerization reactor by splitting the fluidization gas and returning part of the fluidization gas to the reactor into the bottom zone of the reactor and another part of the fluidization gas directly into the dense phase formed by particles of a polymer of the at least one olefin suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.

公开(公告)号：US20200346180A1

公开(公告)日：2020-11-05

申请号：US16765103

申请日：2018-10-25

Applicant: Borealis AG

Inventor： Günter WEICKERT ,  Eric-Jan PRINSEN ,  Klaus NYFORS ,  Erno ELOVAINIO ,  Vasileios KANELLOPOULOS

IPC: B01J8/18 ,  C08F10/06 ,  C08F10/02 ,  B01J8/44

Abstract: The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directly into the dense phase formed by particles of a polymer of the olefin monomer(s) suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.