Henkel Kommanditgesellschaft Auf Aktien

Cognis Deutschland Gmbh & Co. Kg

Norbert Wrede

Wolfgang Schmidt

Guenter Panthel

Dietmar Colignon

Erich Dorra

Bernhard Gutsche

Thomas Lueder

Christoph Breucker

Herbert Lepper

Wolfgang Hater

Konstantinos Scholinakis

Alfred Werner-Busse

Jens Vier

Giancinto Sforza-Heinen

Wolfgang Schmitt

Francois Pierron

A water treatment unit having: (a) a cooling tower; (b) a source of cooling water; (c) a main flow pipe for receiving the cooling water; (d) a source of fresh water connected to the source of cooling water; (e) a heat exchanger for heating the cooling water to form heated water; (f) a branched flow pipe for separating the heated water into a main stream of heated water and a partial stream of heated water; (g) a non-backwashable filter capable of separating waste contained in the partial stream of heated water into a compact waste residue and a first filtrate, in the absence of backwashing; and (h) a return pipe for transporting the main filtrate back to the cooling tower, wherein the cooling water is introduced through the main flow pipe into the heat exchanger where it is heated, after which it is split into a main stream of heated water and a partial stream of heated water, the main stream of heated water being transported back to the cooling tower, with the partial stream being transported, by way of the branched flow pipe, into the non-backwashable filter where it is separated into the first filtrate and the compact waste residue, the first filtrate then being transported to the cooling tower through the return pipe.

System and method for treating water circulating in open-circuit cooling systems

A process for producing solid detergent granular materials is presented involving (a) forming an aqueous surfactant paste of an anionic surfactant, an amphoteric surfactant or mixtures thereof, and (b) drying and granulating the aqueous paste in a horizontal thin-layer evaporator or dryer having rotating fittings, wherein the drying is carried out at a temperature of 120&deg; C. to 130&deg; C. The process produces granules having a bulk density greater than 600 grams/liter and a uniform particle size distribution.

Process for preparing raw materials for washing agents

Process for the production of highly concentrated pastes of

Process for the production of light-colored pastes of .alpha.-sulfofatty

Process for the production of light-colored .alpha.-sulfofatty acid

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Duesseldorf, Germany

Norbert Wrede