Infrarotanalyse fuer die Prozessfuehrung in der Zellstoff- und Papierindustrie

Parameters important for process control in the pulp and paper industry, e.g. strength properties, can only be measured at much expense in the laboratory and are thus not available for immediate control or adjustment. With infra red analysis and modern software for assessment of the spectra, these parameters become available for fast on-line measurement. Almost all chemical and physical information on paper, pulp or the timber are contained in the infra red spectra. It is however not possible to make unambigous connections between this information and the spectral bands, since these are generally very broad and often overlap. The relations between the chemical composition and the parameters, important for process control, are often insufficiently well known. By the application of an innovative evaluation of the spectra, it can be shown that it is possible to determine the paper and pulp strengths like breaking length, burst strength, CMT and others, directly from the spectra.