公开(公告)号：US11773192B2

公开(公告)日：2023-10-03

申请号：US17856095

申请日：2022-07-01

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sanjeev Kumar Gupta ,  Mohammed Al-Ofi ,  Ravi Ranjan Kumar ,  Abdulrahman Albeladi

IPC: C08F2/38 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  B01J8/18 ,  B01J8/24 ,  C08F4/654

CPC classification number: C08F2/38 ,  B01J8/1809 ,  B01J8/24 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  B01J2219/00033 ,  B01J2219/00063 ,  C08F4/6545 ,  C08F4/6548 ,  C08F2400/02

Abstract: The present invention relates to a process for the continuous preparation of a polyolefin from one or more α-olefin monomers in a reactor system, the process for the continuous preparation of polyolefin comprising the steps of: +feeding a polymerization catalyst to a fluidized bed through an inlet for a polymerization catalyst; +feeding the one or more monomers to the reactor, +polymerizing the one or more monomers in the fluidized bed to prepare the polyolefin; +withdrawing polyolefin formed from the reactor through an outlet for polyolefin; +withdrawing fluids from the reactor through an outlet for fluids and transporting the fluids through first connection means, an heat exchanger to cool the fluids to produce a cooled recycle stream, and through second connection means back into the reactor via an inlet for the recycle stream; wherein a thermal run away reducing agent (TRRA) is added to the reactor in a discontinuous way.

公开(公告)号：US11384166B2

公开(公告)日：2022-07-12

申请号：US16331234

申请日：2017-09-01

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sanjeev Kumar Gupta ,  Mohammed Al-Ofi ,  Ravi Ranjan Kumar ,  Abdulrahman Albeladi

IPC: C08F2/38 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  B01J8/18 ,  B01J8/24 ,  C08F4/654

Abstract: The present invention relates to a process for the continuous preparation of a polyolefin from one or more α-olefin monomers in a reactor system, the process for the continuous preparation of polyolefin comprising the steps of: feeding a polymerization catalyst to a fluidized bed through an inlet for a polymerization catalyst; feeding the one or more monomers to the reactor, polymerizing the one or more monomers in the fluidized bed to prepare the polyolefin; withdrawing polyolefin formed from the reactor through an outlet for polyolefin; withdrawing fluids from the reactor through an outlet for fluids and transporting the fluids through first connection means, an heat exchanger to cool the fluids to produce a cooled recycle stream, and through second connection means back into the reactor via an inlet for the recycle stream; wherein a thermal run away reducing agent (TRRA) is added to the reactor in a discontinuous way.

公开(公告)号：US20250019468A1

公开(公告)日：2025-01-16

申请号：US18712084

申请日：2022-11-14

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Byron Smith John Rajarethnam ,  Musaad Al-Sadhan ,  Ravi Ranjan Kumar ,  Retheesh Madhusudanan Vanchiyil ,  Hesham Al-Shobilly ,  Erik René Delsman

IPC: C08F2/01 ,  B01J8/18 ,  B01J8/26 ,  C08F2/34 ,  C08F10/06

Abstract: Process for the polymerization of one or more monomers in a fluidized bed reactor, which reactor comprises a reaction zone which is confined at the underside by a gas distribution plate and at the top side by a virtual end surface, in which a fluidized bed is maintained between the underside and the top side, and in which at least part of the gaseous stream withdrawn from the top of the reactor is cooled to a point where the stream partially condenses into a liquid and in which at least part of the resulting two-phase stream is recycled to the reactor via an inlet which terminates in the reactor below the gas distribution plate, wherein, the reaction zone of the reactor is divided into two compartments by a draft tube extending from a point located above the gas distribution plate such that the area ratio of the circumferential draft tube inlet area (Ahb) to annular area (Aa) is between 0.5 to 3, preferably 2, to a point located below the end surface.

公开(公告)号：US20220332855A1

公开(公告)日：2022-10-20

申请号：US17856095

申请日：2022-07-01

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sanjeev Kumar Gupta ,  Mohammed Al-Ofi ,  Ravi Ranjan Kumar ,  Abdulrahman Albeladi

IPC: C08F2/38 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  B01J8/18 ,  B01J8/24

Abstract: The present invention relates to a process for the continuous preparation of a polyolefin from one or more α-olefin monomers in a reactor system, the process for the continuous preparation of polyolefin comprising the steps of: feeding a polymerization catalyst to a fluidized bed through an inlet for a polymerization catalyst; feeding the one or more monomers to the reactor, polymerizing the one or more monomers in the fluidized bed to prepare the polyolefin; withdrawing polyolefin formed from the reactor through an outlet for polyolefin; withdrawing fluids from the reactor through an outlet for fluids and transporting the fluids through first connection means, an heat exchanger to cool the fluids to produce a cooled recycle stream, and through second connection means back into the reactor via an inlet for the recycle stream; wherein a thermal run away reducing agent (TRRA) is added to the reactor in a discontinuous way.

公开(公告)号：US20190185591A1

公开(公告)日：2019-06-20

申请号：US16331234

申请日：2017-09-01

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sanjeev Kumar Gupta ,  Mohammed Al-Ofi ,  Ravi Ranjan Kumar ,  Abdulrahman Albeladi

IPC: C08F2/38 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  B01J8/24 ,  B01J8/18

CPC classification number: C08F2/38 ,  B01J8/1809 ,  B01J8/24 ,  B01J2219/00033 ,  B01J2219/00063 ,  C08F2/01 ,  C08F4/6545 ,  C08F4/6548 ,  C08F10/02 ,  C08F10/06 ,  C08F110/02 ,  C08F110/06 ,  C08F2400/02

Abstract: The present invention relates to a process for the continuous preparation of a polyolefin from one or more α-olefin monomers in a reactor system, the process for the continuous preparation of polyolefin comprising the steps of: feeding a polymerization catalyst to a fluidized bed through an inlet for a polymerization catalyst; feeding the one or more monomers to the reactor, polymerizing the one or more monomers in the fluidized bed to prepare the polyolefin; withdrawing polyolefin formed from the reactor through an outlet for polyolefin; withdrawing fluids from the reactor through an outlet for fluids and transporting the fluids through first connection means, an heat exchanger to cool the fluids to produce a cooled recycle stream, and through second connection means back into the reactor via an inlet for the recycle stream; wherein a thermal run away reducing agent (TRRA) is added to the reactor in a discontinuous way.