Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland

Low calorific value of lignite, mostly attributed to high moisture content, undermines usability of this low rank coal. Upgrading the quality of this energy carrier, which benefits coal-fired power plant's thermal efficiency, can be effectively realized by means of drying. The kinetics of s...

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Autores principales:	Marcin ZAKRZEWSKI, Yosuke KOMATSU, Anna SCIAZKO, Taro AKIYAMA, Akira HASHIMOTO, Naoki SHIKAZONO, Shozo KANEKO, Shinji KIMIJIMA, Janusz S. SZMYD, Yoshinori KOBAYASHI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	low rank coal drying kinetics belchatow lignite superheated steam drying numerical simulation single-particle model Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/3cabeb63c46546abafc44faa2da7304a
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spelling	oai:doaj.org-article:3cabeb63c46546abafc44faa2da7304a2021-11-26T06:55:30ZComprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland2187-974510.1299/mej.16-00365https://doaj.org/article/3cabeb63c46546abafc44faa2da7304a2016-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/5/3_16-00365/_pdf/-char/enhttps://doaj.org/toc/2187-9745Low calorific value of lignite, mostly attributed to high moisture content, undermines usability of this low rank coal. Upgrading the quality of this energy carrier, which benefits coal-fired power plant's thermal efficiency, can be effectively realized by means of drying. The kinetics of superheated steam drying was studied for 30 mm spherical samples from Belchatow lignite mine in Poland. The experiment featured simultaneous and continuous measurements of weight and temperature. The drying kinetics, described by curves of moisture content, drying rate and temperature profile, were evaluated using the data acquired. The appearance of the sample throughout the process was video-recorded. Widespread cracking and shrinkage, which differ depending on the conditions, along with series of droplets typical for larger sample, were observed. The examined particles were suitable for predictions of thermodynamically derived drying rate and time, as proposed in the previous study for 5 and 10 mm particles from the same coal deposit. However, in comparison they exhibited more uniform density distribution. On the basis of experimental results and material properties, the numerical model of drying process was applied. Simulated drying behavior was consistent with empirical observations. Extensive investigation, revealing features of variously-sized samples as well as diameter dependence on drying process, is required for purposes of designing industrial drying system dedicated to specific type of coal.Marcin ZAKRZEWSKIYosuke KOMATSUAnna SCIAZKOTaro AKIYAMAAkira HASHIMOTONaoki SHIKAZONOShozo KANEKOShinji KIMIJIMAJanusz S. SZMYDYoshinori KOBAYASHIThe Japan Society of Mechanical Engineersarticlelow rank coaldrying kineticsbelchatow lignitesuperheated steam dryingnumerical simulationsingle-particle modelMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 5, Pp 16-00365-16-00365 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	low rank coal drying kinetics belchatow lignite superheated steam drying numerical simulation single-particle model Mechanical engineering and machinery TJ1-1570
spellingShingle	low rank coal drying kinetics belchatow lignite superheated steam drying numerical simulation single-particle model Mechanical engineering and machinery TJ1-1570 Marcin ZAKRZEWSKI Yosuke KOMATSU Anna SCIAZKO Taro AKIYAMA Akira HASHIMOTO Naoki SHIKAZONO Shozo KANEKO Shinji KIMIJIMA Janusz S. SZMYD Yoshinori KOBAYASHI Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland
description	Low calorific value of lignite, mostly attributed to high moisture content, undermines usability of this low rank coal. Upgrading the quality of this energy carrier, which benefits coal-fired power plant's thermal efficiency, can be effectively realized by means of drying. The kinetics of superheated steam drying was studied for 30 mm spherical samples from Belchatow lignite mine in Poland. The experiment featured simultaneous and continuous measurements of weight and temperature. The drying kinetics, described by curves of moisture content, drying rate and temperature profile, were evaluated using the data acquired. The appearance of the sample throughout the process was video-recorded. Widespread cracking and shrinkage, which differ depending on the conditions, along with series of droplets typical for larger sample, were observed. The examined particles were suitable for predictions of thermodynamically derived drying rate and time, as proposed in the previous study for 5 and 10 mm particles from the same coal deposit. However, in comparison they exhibited more uniform density distribution. On the basis of experimental results and material properties, the numerical model of drying process was applied. Simulated drying behavior was consistent with empirical observations. Extensive investigation, revealing features of variously-sized samples as well as diameter dependence on drying process, is required for purposes of designing industrial drying system dedicated to specific type of coal.
format	article
author	Marcin ZAKRZEWSKI Yosuke KOMATSU Anna SCIAZKO Taro AKIYAMA Akira HASHIMOTO Naoki SHIKAZONO Shozo KANEKO Shinji KIMIJIMA Janusz S. SZMYD Yoshinori KOBAYASHI
author_facet	Marcin ZAKRZEWSKI Yosuke KOMATSU Anna SCIAZKO Taro AKIYAMA Akira HASHIMOTO Naoki SHIKAZONO Shozo KANEKO Shinji KIMIJIMA Janusz S. SZMYD Yoshinori KOBAYASHI
author_sort	Marcin ZAKRZEWSKI
title	Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland
title_short	Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland
title_full	Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland
title_fullStr	Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland
title_full_unstemmed	Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland
title_sort	comprehensive study on the kinetics and modelling of superheated steam drying of belchatow lignite from poland
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/3cabeb63c46546abafc44faa2da7304a
work_keys_str_mv	AT marcinzakrzewski comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT yosukekomatsu comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT annasciazko comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT taroakiyama comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT akirahashimoto comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT naokishikazono comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT shozokaneko comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT shinjikimijima comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT januszsszmyd comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland AT yoshinorikobayashi comprehensivestudyonthekineticsandmodellingofsuperheatedsteamdryingofbelchatowlignitefrompoland
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Comprehensive study on the kinetics and modelling of superheated steam drying of Belchatow lignite from Poland

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