Henkel Kommanditgesellschaft Auf Aktien

Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa)

Henkel Ag & Company, Kgaa

Werner Opitz

Bernd Stedry

Hans-Willi Kling

Wolfgang Krey

Bernd Schenzle

Ibolya Bartik-Himmler

Friedhelm Siepmann

Andrea Wimschneider

Ludger Buetfering

Gerhard Rehm

A method of automatically determining the content of inorganic carbon and/or total organic carbon in an aqueous purifying solution wherein, in program-controlled manner, (a) a sample of a predetermined volume is taken from the aqueous purifying solution; (b) if desired, the sample is freed of solids and/or homogenized; (c) if desired, the sample is diluted with water in a ratio which has been preset or is determined as a result of a preliminary analysis; (d) the inorganic carbon and/or total organic carbon is analysed using known methods; and (e) the result of the analysis is transmitted to a remote location and output and/or stored on a data carrier and/or used as the basis of further calculations. Program-controlled or automatic, externally-initiated checking of the measuring device is provided. Bath treatment measures may be implemented in program-controlled manner or in response to external triggering.

Automatic determination of the contamination of aqueous cleaning solutions with carbonaceous compounds

A method for the automatic monitoring and control of the content of surfactants of an aqueous process solution, wherein, under program control: a sample having a predetermined volume is taken from the aqueous process solution; the content of surfactants in the sample is determined utilizing measuring equipment capable of analyzing the sample; the results of the analysis are output by the system; the functional capacity of the measuring equipment is checked by determining the surfactant content of one or more standard solutions if the results of the analysis of the content of surfactants on two consecutive drawn samples differs by a preselected value; and corrective action is automatically taken if the check of the measuring equipment reveals any problems. Bath maintenance measures may be initiated automatically or by request from a remote location according to pre-determined criteria. The method reduces the number of staff for bath monitoring and bath maintenance and increases process safety.

Method for automatically testing and controlling surface-active contents in aqueous solutions used in a process

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Langenfeld, Germany

Werner Opitz