Patent · US Active

Cooling and purification of gas streams

US7959713B2 · kind B2 · utility

0Cited by

4References

19Claims

0Family size

Assignee

BASF SE

Inventors

Jan-Martin Loning · Freinsheim, DE
Manfred Heckmann · Kuantan, MY
Karl Holemann · Mannheim, DE
Thomas Heitz · Ludwigshafen am Rhein, DE

Key dates

Filing date	Mar 17, 2005
Grant date	Jun 14, 2011
Priority date	—
Expiry date	Sep 2, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Process for purifying and cooling a gas stream comprising a dialkyl ester A) of an aromatic dicarboxylic acid, which comprises treating the gas stream with an aliphatic dihydroxy compound B) at a temperature less than/equal to the melting point of the dialkyl ester A) in a 1st stage and treating the gas stream with an aliphatic dihydroxy compound B) at above the melting point of the dihydroxy compound B) in at least one 2nd stage.

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