Experimental Attempts to Investigate the Influence of Petrographic Properties on Drying Characteristics of Lignite in Superheated Steam Atmosphere

Anna Sciazko, Yosuke Komatsu, Marcin Zakrzewski, Taro Akiyama, Akira Hashimoto, Naoki Shikazono, Shozo Kaneko, Shinji Kimijima, Janusz S. Szmyd and Yoshinori Kobayashi
Additional contact information
Anna Sciazko: AGH University of Science and Technology, Department of Fundamental Research in Energy Engineering, Krakow 30-059, Poland
Yosuke Komatsu: Shibaura Institute of Technology, Division of Regional Environment Systems, Saitama 337-8570, Japan
Marcin Zakrzewski: AGH University of Science and Technology, Department of Fundamental Research in Energy Engineering, Krakow 30-059, Poland
Taro Akiyama: The University of Tokyo, Institute of Industrial Science, Tokyo 153-8505, Japan
Akira Hashimoto: The University of Tokyo, Institute of Industrial Science, Tokyo 153-8505, Japan
Naoki Shikazono: The University of Tokyo, Institute of Industrial Science, Tokyo 153-8505, Japan
Shozo Kaneko: The University of Tokyo, Institute of Industrial Science, Tokyo 153-8505, Japan
Shinji Kimijima: The University of Tokyo, Institute of Industrial Science, Tokyo 153-8505, Japan
Janusz S. Szmyd: AGH University of Science and Technology, Department of Fundamental Research in Energy Engineering, Krakow 30-059, Poland
Yoshinori Kobayashi: The University of Tokyo, Institute of Industrial Science, Tokyo 153-8505, Japan

Energies, 2016, vol. 9, issue 5, 1-18

Abstract: A superheated steam fluidized bed dryer (SSFBD) in a self-heat recuperative configuration has a great potential of improving thermal efficiency of a lignite-fired power plant by recovering both of latent heat of vaporization of water kept in the fuel and part of sensible heat during the fuel processing. However, the optimal design of the dryer requires the fundamental knowledge of drying characteristics in respect to the individual properties of the utilized fuel. Experimental investigation to determine the correlation between a specific coal properties originated from geological background and its drying characteristics is thus the major concern in this paper. The investigated lignite is a representative of Turoszow deposit in Poland. Experimental attempts unveiling drying kinetics were carried out for 5 mm and 10 mm diameter spherical samples in the superheated steam atmosphere in the temperature range of 110 °C–170 °C. Simultaneous and continuous measurements of changes in weight, surface and interior temperatures and appearance on each tested sample were carried out for describing drying behavior. Analytical investigation was applied to explain the drying characteristics, which are strongly affected by the individual properties of coal and the inherent ash composition.

Keywords: Turow lignite; superheated steam drying; drying characteristic; low-rank coal (LRC); lignite upgrading (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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