Characterization of Slovenian coal and estimation of coal heating value based on proximate analysis using regression and artificial neural networks

• Authors: Darja Kavšek , Adriána Bednárová , Miša Biro , Roman Kranvogl , Darinka Vončina , Ernest Beinrohr
• Languages of publication: EN

Abstracts

EN

Abstract Chemical composition of Slovenian coal has been characterised in terms of proximate and ultimate analyses and the relations among the chemical descriptors and the higher heating value (HHV) examined using correlation analysis and multivariate data analysis methods. The proximate analysis descriptors were used to predict HHV using multiple linear regression (MLR) and artificial neural network (ANN) methods. An attempt has been made to select the model with the optimal number of predictor variables. According to the adjusted multiple coefficient of determination in the MLR model, and alternatively, according to sensitivity analysis in ANN developing, two descriptors were evaluated by both methods as optimal predictors: fixed carbon and volatile matter. The performances of MLR and ANN when modelling HHV were comparable; the mean relative difference between the actual and calculated HHV values in the training data was 1.11% for MLR and 0.91% for ANN. The predictive ability of the models was evaluated by an external validation data set; the mean relative difference between the actual and predicted HHV values was 1.39% in MLR and 1.47% in ANN. Thus, the developed models could be appropriately used to calculate HHV. Graphical abstract [...]

Keywords

EN

Slovenian Coal; Higher Heating Value (HHV); Regression; Artificial Neural Network; Multivariate Data Analysis

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2013
• Volume: 11
• Issue: 9
• Pages: 1481-1491

Dates

published

1 - 9 - 2013

online

29 - 6 - 2013

Contributors

author

Darja Kavšek

• Regional Technological Centre Zasavje, Chemical-Technological Laboratory, 1420, Trbovlje, Slovenia

author

Adriána Bednárová

• Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, SK-917 01, Trnava, Slovakia

author

Miša Biro

• CIVIS d.o.o., 2000, Maribor, Slovenia

author

Roman Kranvogl

• Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000, Maribor, Slovenia

author

Darinka Vončina

• Faculty of Chemistry and Chemical Engineering, University of Maribor, 2000, Maribor, Slovenia

author

Ernest Beinrohr

• Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, SK-917 01, Trnava, Slovakia

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Identifiers

DOI

10.2478/s11532-013-0280-x