公开(公告)号：US11596918B2

公开(公告)日：2023-03-07

申请号：US16998237

申请日：2020-08-20

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： John L. Begue ,  Kelly M. Forcht ,  Keith W. Trapp

IPC: B01J19/00 ,  C08F2/01 ,  C08F6/12

Abstract: A method for minimizing the amount of catalyst inactivating agent that is present in a liquid fraction recovered from a slurry-based polymer production process, the liquid fraction comprising diluent used in the polymer production process, is disclosed. The method includes steps for controlling the pressure over the liquid fraction collected during diluent recovery so as to minimize the concentration of catalyst inactivating agent that is retained in the recovered liquid fraction. Embodiments of apparatus suitable for conducting the disclosed method are also provided.

公开(公告)号：US12116430B2

公开(公告)日：2024-10-15

申请号：US17425910

申请日：2020-01-23

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Keith W. Trapp ,  John L. Begue ,  Kelly M. Forcht ,  Douglas J. Picou

IPC: C08F2/01 ,  B01J4/00 ,  B01J19/00

CPC classification number: C08F2/01 ,  B01J4/008 ,  B01J19/0006 ,  B01J19/0053 ,  B01J2219/00164 ,  B01J2219/00182

Abstract: A method for regulating use of stored diluent in a polymerization process so as to maximize use of diluent recycled diluent recovered from the process, and so minimize use of stored diluent, is disclosed. Also disclosed is apparatus, particularly as an arrangement of controllers and valves for handling the flow of diluent through the process that can be used to implement the disclosed process.