公开(公告)号：US11002653B2

公开(公告)日：2021-05-11

申请号：US16447605

申请日：2019-06-20

Applicant: Dow Global Technologies LLC

Inventor： Alec Y. Wang ,  Curvel Hypolite ,  Jorge Rubalcaba ,  Michael J. Zogg, Jr. ,  Job D. Guzman

IPC: G01N9/32 ,  C08F6/00 ,  C08F6/12

Abstract: The invention provides a method, and apparatus, for determining the degree of separation (DOS) of a polymer solution into a polymer-rich stream and a solvent-rich stream, said method comprising the following: adding to a liquid-liquid separation vessel the polymer solution, which comprises a polymer, a solvent and an anti-solvent; separating the polymer solution into a polymer-rich stream and a solvent-rich stream; removing at least some the polymer-rich stream from at least one outlet P on the vessel, and measuring the actual solution density of this polymer-rich stream using at least one flow meter; removing at least some of the solvent-rich stream from at least one other outlet S on the vessel, and measuring the actual density of the solvent-rich stream using at least one flow meter; and wherein the degree of separation (DOS) is determined by the following equation (Eqn. 1): DOS=[actual solution density (polymer-rich steam)−actual solution density (solvent-rich stream)]/[theoretical solution density (polymer-rich stream)−theoretical solution density (solvent-rich stream)]  (Eqn. 1).

公开(公告)号：US10365195B2

公开(公告)日：2019-07-30

申请号：US14915921

申请日：2014-11-25

Applicant: Dow Global Technologies LLC

Inventor： Alec Y. Wang ,  Curvel Hypolite ,  Jorge Rubalcaba ,  Michael J. Zogg, Jr. ,  Job D. Guzman

IPC: G01N9/32 ,  C08F6/00 ,  C08F6/12

Abstract: The invention provides a method, and apparatus, for determining the degree of separation (DOS) of a polymer solution into a polymer-rich stream and a solvent-rich stream, said method comprising the following: adding to a liquid-liquid separation vessel the polymer solution, which comprises a polymer, a solvent and an anti-solvent; separating the polymer solution into a polymer-rich stream and a solvent-rich stream; removing at least some the polymer-rich stream from at least one outlet P on the vessel, and measuring the actual solution density of this polymer-rich stream using at least one flow meter; removing at least some of the solvent-rich stream from at least one other outlet S on the vessel, and measuring the actual density of the solvent-rich stream using at least one flow meter; and wherein the degree of separation (DOS) is determined by the following equation (Eqn. 1): DOS=[actual solution density (polymer-rich steam)−actual solution density (solvent-rich stream)]/[theoretical solution density (polymer-rich stream)−theoretical solution density (solvent-rich stream)]  (Eqn. 1).

公开(公告)号：US20160282251A1

公开(公告)日：2016-09-29

申请号：US14915921

申请日：2014-11-25

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Alec Y. Wang ,  Curvel Hypolite ,  Jorge Rubalcaba ,  Michael J. Zogg, JR. ,  Job D. Guzman

IPC: G01N9/32 ,  C08F6/12

CPC classification number: G01N9/32 ,  C08F6/003 ,  C08F6/12 ,  C08L23/00

Abstract: The invention provides a method, and apparatus, for determining the degree of separation (DOS) of a polymer solution into a polymer-rich stream and a solvent-rich stream, said method comprising the following: adding to a liquid-liquid separation vessel the polymer solution, which comprises a polymer, a solvent and an anti-solvent; separating the polymer solution into a polymer-rich stream and a solvent-rich stream; removing at least some the polymer-rich stream from at least one outlet P on the vessel, and measuring the actual solution density of this polymer-rich stream using at least one flow meter; removing at least some of the solvent-rich stream from at least one other outlet S on the vessel, and measuring the actual density of the solvent-rich stream using at least one flow meter; and wherein the degree of separation (DOS) is determined by the following equation (Eqn. 1): DOS=[actual solution density (polymer-rich steam)−actual solution density (solvent-rich stream)]/[theoretical solution density (polymer-rich stream)−theoretical solution density (solvent-rich stream)] (Eqn. 1).

Abstract translation: 本发明提供了一种用于确定聚合物溶液进入富聚合物流和富溶剂流的分离程度（DOS）的方法和装置，所述方法包括以下步骤：向液 - 液分离容器中加入 聚合物溶液，其包含聚合物，溶剂和抗溶剂; 将聚合物溶液分离成富聚合物流和富溶剂流; 从容器中的至少一个出口P去除至少一些富含聚合物的流，并使用至少一个流量计测量该富聚合物流的实际溶液密度; 从容器中的至少一个其他出口S去除至少一些富溶剂流，并使用至少一个流量计测量富溶剂流的实际密度; 并且其中分离度（DOS）由以下等式（等式1）确定：DOS = [实际溶液密度（富含聚合物的蒸汽） - 实际溶液密度（富溶剂流）] / [理论溶液密度 富含聚合物的流） - 理论溶液密度（富溶剂流）]（方程式1）。