Analysis and Modelling of an Industrial Pressure Filtration using Process Data

F. D. Bähner, P. A. Santacoloma, J. Abildskov, J. K. Huusom

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In order to understand a series of pressure leaf filters located in the downstreamline of a bio-based production site, historical process data have been analysed. In general, changing raw materials induce variability into the pressure profiles and thereby cycle durations of the manually reinitialised dead-end filtrations. The absence of a true steady state results in uncertainty about the optimal way of running the filters, and staff members alter the operational specifications frequently. It appears that, in some cases, this propagates disturbances rather than ameliorate them. Statistical analyses are carried out to illustrate the current situation and especially allow quantifying the extent of the uncertainties. Furthermore, significant correlations between process variables are revealed and economically motivated operational objectives are identified. Secondly, working towards on-line predictions of filtration performance, a modelis presented. It is based on classical filtration theory and requires only commonly available measurements (pressure, flow, viscosity). The generated predictions are found to be acceptable for many cycles, but in some cases fail due to non-modelled effects, motivating further work.
Original languageEnglish
Issue number1
Pages (from-to)12137-12142
Publication statusPublished - 2017
EventThe 20th World Congress of the International Federation of Automatic Control - Pierre Baudis Congress center, Toulouse, France
Duration: 9 Jul 201714 Jul 2017


ConferenceThe 20th World Congress of the International Federation of Automatic Control
LocationPierre Baudis Congress center


  • Biosystems and bioprocesses
  • Downstream processing
  • Parameter and state estimation
  • Data mining tools
  • Modelling and identification
  • Pressure leaf filtration

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