Patent · US Expired

Column comprising dual flow plates

US7306204B2 · kind B2 · utility

3Cited by

4References

11Claims

0Family size

Assignee

BASF SE

Inventors

Joachim Thiel · Neustadt, DE
Juergen Schroeder · Ludwigshafen, DE

Key dates

Filing date	Nov 21, 2002
Grant date	Dec 11, 2007
Priority date	—
Expiry date	Sep 29, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D3/22
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A column for the thermal treatment of mixtures which contain one or more polymerizable compounds is proposed, which column has dual-flow trays with openings whose diameter is constant within a dual-flow tray, the dual-flow trays having openings of decreasing diameter with increasing distance from the feed of the mixture to be treated.

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