TY - JOUR
T1 - An experimental verification of numerical model on superheated steam drying of Belchatow lignite
AU - Zakrzewski, M.
AU - Sciazko, A.
AU - Komatsu, Y.
AU - Akiyama, T.
AU - Hashimoto, A.
AU - Kaneko, S.
AU - Kimijima, S.
AU - Szmyd, J. S.
AU - Kobayashi, Y.
N1 - Funding Information:
The present study was financially support by the Japan Coal Energy Center (JCOAL) and the Polish National Centre for Research and Development (NCBR Project: I-POL-JAP, SSD-4-LRC)
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2016/10/21
Y1 - 2016/10/21
N2 - Due to low production costs, lignite is an important component of energy mixes of countries in its possession. However, high moisture content undermines its applicability as fuel for power generation. Drying in superheated steam is a prospective method of upgrading quality of lignite. The study aimed to validate the drying model of lignite from Belchatow mine in Poland. The experimental investigation on superheated steam drying of lignite was previously conducted. Spheres of 10 mm in diameter were exposed to the drying medium at the temperature range of 110-170oC. The drying behaviour was described in the form of moisture content, drying rate and temperature profile curves against time. With the application of basic coal properties (e.g. density, water percentage, specific heat) as well as the mechanisms of heat and mass transfer in subsequent stages of the process, the numerical model of drying was constructed. It was tentatively verified with reference to experimental results both in terms of drying parameters and temperature. The model illustrated drying behaviour in the entire range of conditions. Nevertheless, further development of numerical model is desirable regarding accuracy of the process parameters.
AB - Due to low production costs, lignite is an important component of energy mixes of countries in its possession. However, high moisture content undermines its applicability as fuel for power generation. Drying in superheated steam is a prospective method of upgrading quality of lignite. The study aimed to validate the drying model of lignite from Belchatow mine in Poland. The experimental investigation on superheated steam drying of lignite was previously conducted. Spheres of 10 mm in diameter were exposed to the drying medium at the temperature range of 110-170oC. The drying behaviour was described in the form of moisture content, drying rate and temperature profile curves against time. With the application of basic coal properties (e.g. density, water percentage, specific heat) as well as the mechanisms of heat and mass transfer in subsequent stages of the process, the numerical model of drying was constructed. It was tentatively verified with reference to experimental results both in terms of drying parameters and temperature. The model illustrated drying behaviour in the entire range of conditions. Nevertheless, further development of numerical model is desirable regarding accuracy of the process parameters.
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U2 - 10.1088/1742-6596/745/3/032145
DO - 10.1088/1742-6596/745/3/032145
M3 - Conference article
AN - SCOPUS:84995487889
SN - 1742-6588
VL - 745
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 3
M1 - 032145
T2 - 7th European Thermal-Sciences Conference, Eurotherm 2016
Y2 - 19 June 2016 through 23 June 2016
ER -