公开(公告)号：US10179826B2

公开(公告)日：2019-01-15

申请号：US15587629

申请日：2017-05-05

Applicant: Chevron Phillips Chemical Company LP

Inventor： Anurag Gupta ,  Anne M Balinsky ,  Robert R McElvain ,  John D Stewart

IPC: C08F110/02

Abstract: A process is described for introducing a catalyst into a polymerization zone by detecting one or a combination of (i) a change in a concentration of the catalyst in a catalyst feed stream upstream of the polymerization zone, (ii) a change in a concentration of monomer in the polymerization zone, and (iii) a change in a polymer production rate of the polymerization zone, adjusting a first catalyst flow rate of the catalyst in the catalyst feed stream to a second catalyst flow rate based on the one or a combination of (i), (ii), and (iii), and introducing the catalyst into the polymerization zone downstream of a location in the catalyst feed stream where the step of adjusting is performed. A catalyst injection system for carrying out such a process is also provided.