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.

公开(公告)号：US09340627B1

公开(公告)日：2016-05-17

申请号：US14283717

申请日：2014-05-21

Applicant: Chevron Phillips Chemical Company, LP

Inventor： Scott E. Kufeld ,  Joel A. Mutchler ,  Ralph W. Romig ,  John D Stewart ,  Catherine M Gill ,  Bruce E. Kreischer ,  John D. Hottovy

IPC: B01J19/18 ,  C08F2/00 ,  C08F210/00 ,  C08F2/01 ,  B01J19/24

CPC classification number: C08F2/01 ,  B01J19/0046 ,  B01J19/1806 ,  B01J19/1818 ,  B01J19/1837 ,  B01J19/1862 ,  B01J19/2405 ,  B01J19/2435 ,  B01J19/245 ,  B01J19/2455 ,  B01J2219/00006 ,  B01J2219/00063 ,  B01J2219/00065 ,  B01J2219/00069 ,  B01J2219/00094 ,  B01J2219/00108 ,  B01J2219/00162 ,  B01J2219/00164 ,  B01J2219/182 ,  B01J2219/185 ,  B01J2219/24 ,  C08F2/12 ,  C08F110/02 ,  C08F110/06

Abstract: A reactor system containing one or more loop reactors for olefin polymerization is provided. The loop reactors include vertical sections, elbow sections, and/or horizontal sections connected into one or more loop reaction zones to polymerize an olefin monomer in the presence of a liquid diluent into a slurry comprising particles of a polyolefin polymer. The reactor system footprint is reduced to increase production efficiency and save cost, while maintaining a high processing capacity. In one embodiment a horizontal length (LH) of at least one horizontal section is greatly reduced with maintained processing capacity. In another embodiment, at least one elbow section of the reactor system is configured to maintain a Dean number (Dn) of the slurry flowing therein to be higher than 3,000,000.

Abstract translation: 提供了一种含有一个或多个烯烃聚合反应器的反应器系统。 回路反应器包括连接到一个或多个环路反应区中的垂直段，弯头段和/或水平段，以在液体稀释剂存在下将烯烃单体聚合成包含聚烯烃聚合物颗粒的淤浆。 减少反应堆系统占地面积，提高生产效率，节约成本，同时保持高处理能力。 在一个实施例中，至少一个水平部分的水平长度（LH）在维持处理能力的情况下大大减小。 在另一个实施方案中，反应器系统的至少一个弯管部分被配置为保持其中流动的浆料的Dean数（Dn）高于3,000,000。

公开(公告)号：US08932527B1

公开(公告)日：2015-01-13

申请号：US14461430

申请日：2014-08-17

Applicant: Chevron Phillips Chemical Company, LP

Inventor： Scott E. Kufeld ,  Joel A. Mutchler ,  Ralph W. Romig ,  John D Stewart ,  Catherine M Gill ,  Bruce E. Kreischer ,  John D. Hottovy

IPC: B01J19/18 ,  C08F210/00 ,  C08F110/06 ,  B01J19/00 ,  C08F110/02

CPC classification number: C08F2/01 ,  B01J19/0046 ,  B01J19/1806 ,  B01J19/1818 ,  B01J19/1837 ,  B01J19/1862 ,  B01J19/2405 ,  B01J19/2435 ,  B01J19/245 ,  B01J19/2455 ,  B01J2219/00006 ,  B01J2219/00063 ,  B01J2219/00065 ,  B01J2219/00069 ,  B01J2219/00094 ,  B01J2219/00108 ,  B01J2219/00162 ,  B01J2219/00164 ,  B01J2219/182 ,  B01J2219/185 ,  B01J2219/24 ,  C08F2/12 ,  C08F110/02 ,  C08F110/06

Abstract: Loop reactors for olefin polymerization and processes utilizing such loop reactors are described herein. In one or more embodiments, the loop reactor generally includes a plurality of vertical sections; a plurality of elbow sections connecting the vertical sections to either a horizontal section having a horizontal length (LH) or another elbow section, at least one elbow section having an internal diameter (d), a radius (Rc) of an inner curvature and a chord length (W) and wherein the horizontal length (LH) is from 0 feet to 3 feet, the chord length (W) is 250 inches or less and a ratio (Rc/d) of the radius (Rc) of the inner curvature to the internal diameter (d) of the at least one elbow section is maintained from 2 to 4; and at least one loop reaction zone configured to polymerize an olefin monomer in the presence of a liquid diluent into a slurry comprising particles of a polyolefin polymer.

Abstract translation: 本文描述了用于烯烃聚合的环流反应器和利用这种环流反应器的方法。 在一个或多个实施例中，环路反应器通常包括多个垂直部分; 将垂直部分连接到具有水平长度（LH）或另一肘部的水平部分的多个弯头部分，至少一个具有内径（d）的弯头部分，内部曲率的半径（Rc）和 弦长（W），其中水平长度（LH）为0英尺至3英尺，弦长（W）为250英寸或更小，并且内曲率半径（Rc）的比（Rc / d） 至少一个肘部的内径（d）保持在2至4; 以及至少一个循环反应区，其被配置为在液体稀释剂存在下将烯烃单体聚合成包含聚烯烃聚合物颗粒的浆料。