Patent · US Expired

Method and device for eliminating oxygen contained in aqueous monomer solutions

US6716273B1 · kind B1 · utility

1Cited by

13References

20Claims

0Family size

Assignee

Stockhausen GmbH & Co. KG · DE

Inventors

Juergen Schulte · Krefeld, DE
Detlef Albin · Moers, DE

Key dates

Filing date	Feb 19, 2002
Grant date	Apr 6, 2004
Priority date	—
Expiry date	Feb 19, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/185
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A continuous process for removing oxygen from aqueous monomer solutions, including flowing an inert gas and a monomer solution in a column-shaped apparatus as a countercurrent, wherein the monomer solution is added at the head of the apparatus, flows through the apparatus as a liquid column, and is withdrawn slightly above the bottom, at least one section of the liquid column is mixed in radial flow direction and in a turbulent fashion, and the at least one section of the liquid column is mixed using at least one stirring element which is one of a turbine disk and a dispersing disk.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.