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Multicylinder sections of paper dryers consume the most energy in an industrial plant. They are also responsible for the final characteristics of the paper produced. In this context, the modeling of the paper drying process is very important, and is normally done by phenomenological approaches. An interesting and promising alternative, due to the possibilities of its application, is through the identification of an operational standard behavior, obtained by the use of neural networks in the simulation of the final paper moisture content. This alternative was implemented in the drying section of the KIabin Paraná Papeis S.A. (Klabin-PR) MP-7 paper machine. For this study, we collected operational data related directly and indirectly to the drying process, composing a database with 110 preselected variables. These data were analyzed with the help of Statistica Neural Network software, which, besides its use for training and choosing the more capable neural networks to model the chosen variable, allows the selection of the group of variables of larger influence in the studied process. The results obtained by the use of the neural network modeling were quite satisfactory, with an average error of less than 2% in the prediction of the final paper moisture content Application: Neural networks may be useful to help control moisture content and increase dryer efficiency. [ABSTRACT FROM AUTHOR]

In this paper it has been presented the results about the study with high pressure steam schemes for the energy integration of a sugar mill with a pulp paper factory. The hypothesis for the integration is that it is possible to produce heat and electricity for both factories with the biomass of the sugar cane. This study includes the diversification of the production whit an ethanol factory for the pulp. The by bibliography, energy, material and cost balances are the main subjects for the best alternative of integration with high pressure schemes. The scheme with 61 ata and 440 °C was the best technically but not in the economic sense. [ABSTRACT FROM AUTHOR]

The article features American Pad and Paper Co. It is said that the line of Imperial school paper produced by the company challenges comparison with any other line of school paper. Some of the factors that enable the company to serve the schools excellently well is its twenty years of producing and selling school stationery and its immense manufacturing plant.