Comparison of coal reactivityduring conversion into different oxidizing medium

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Abstract

Acoal conversion process of different coal samples into three different types of oxidizing medium (argon, air and steam) were studied by means of thermogravimetry. Two coal types with different metamorphism degree (lignite and bituminous coal) were used. The experimental procedure was carried out in non-isothermal conditions in temperature range from 373 K to 1273 K with 20 K/min heating rate. Purge gas consisted of argon and oxidizer with volumetric ratio 1:24 and had 250 ml/min flow rate.The ignition and burnout indexes were calculated to evaluate sample reactivity at different oxidizing mediums. The highest reactivity coefficient values in same atmosphere were obtained for lignite. It was caused by higher particle special surface area and volatile matter content.

Original languageEnglish
Article number052005
JournalJournal of Physics: Conference Series
Volume754
Issue number5
DOIs
Publication statusPublished - 27 Oct 2016

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coal
lignite
reactivity
argon
burnout
oxidizers
thermogravimetry
steam
ignition
flow velocity
atmospheres
heating
air
coefficients
gases
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Comparison of coal reactivityduring conversion into different oxidizing medium",
abstract = "Acoal conversion process of different coal samples into three different types of oxidizing medium (argon, air and steam) were studied by means of thermogravimetry. Two coal types with different metamorphism degree (lignite and bituminous coal) were used. The experimental procedure was carried out in non-isothermal conditions in temperature range from 373 K to 1273 K with 20 K/min heating rate. Purge gas consisted of argon and oxidizer with volumetric ratio 1:24 and had 250 ml/min flow rate.The ignition and burnout indexes were calculated to evaluate sample reactivity at different oxidizing mediums. The highest reactivity coefficient values in same atmosphere were obtained for lignite. It was caused by higher particle special surface area and volatile matter content.",
author = "Korotkikh, {A. G.} and Slyusarskiy, {Konstantin Vitalievich} and Larionov, {Kirill Borisovich} and Osipov, {Vitaliy Igorevich}",
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AU - Korotkikh, A. G.

AU - Slyusarskiy, Konstantin Vitalievich

AU - Larionov, Kirill Borisovich

AU - Osipov, Vitaliy Igorevich

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AB - Acoal conversion process of different coal samples into three different types of oxidizing medium (argon, air and steam) were studied by means of thermogravimetry. Two coal types with different metamorphism degree (lignite and bituminous coal) were used. The experimental procedure was carried out in non-isothermal conditions in temperature range from 373 K to 1273 K with 20 K/min heating rate. Purge gas consisted of argon and oxidizer with volumetric ratio 1:24 and had 250 ml/min flow rate.The ignition and burnout indexes were calculated to evaluate sample reactivity at different oxidizing mediums. The highest reactivity coefficient values in same atmosphere were obtained for lignite. It was caused by higher particle special surface area and volatile matter content.

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