Basf Aktiengesellschaft

Basf Se Corporation

Karl Hölemann

Ekkehard Schwab

Sven Crone

Petr Kubanek

Thomas Heitz

Bernd Sachweh

Günther Huber

Frederik Van Laar

Jan-Martin Löning

Manfred Heckmann

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.

Cooling and purification of gas streams

A process is proposed for reducing the aerosol-related discharge from a separation column () in which one or more components are separated off from a gaseous or liquid starting mixture (G) at actively separating internals (), aerosols being present or formed in a gas phase, which comprises the actively separating internals () being segmented at one or more separation points, which are determined in such a manner that the aerosols have at least 50% of their maximum particle size at the separation point or separation points, and an internal () being provided at each separation point, which internal is operated under at least partially flooded conditions, a continuous liquid phase being formed at least in partial regions of the internal (), to which region the aerosols are bound.

Reduction of the aerosol-related discharge from a separation column and apparatus therefor

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Mannheim, Germany

Karl Hölemann