Pyrolysis characteristics of Kazakhstan coals in non-isothermal and isothermal conditions

Diyar Tokmurzin, Ho Won Ra, Sung Min Yoon, Sang Jun Yoon, Jae Goo Lee, Myung Won Seo, Desmond Adair

Research output: Contribution to journalArticle

Abstract

This study provides combined isothermal and non-isothermal pyrolysis properties of Kazakhstan coals necessary for development and optimization of thermal processes. Devolatilization properties are investigated using thermogravimetric analysis, thermobalance reactor, and wire-mesh reactor experiments at temperatures from 400°C to 1,000°C. Maikuben coal has the highest reactivity at 900°C and Shubarkol coal has lowest ash initial deformation. Turgay coal demonstrates high gas yield at 800°C and above. At temperatures above 800°C tar cracking intensifies, but tar release from Shubarkol coal increased reaching 8.06% of initial mass at 1,000°C. Results demonstrate that Shubarkol and Turgay coals are favorable gasification feedstock.

Original languageEnglish
JournalInternational Journal of Coal Preparation and Utilization
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Coal
pyrolysis
Pyrolysis
coal
Tars
Tar
tar
Ashes
Gasification
Feedstocks
Coal ash
Thermogravimetric analysis
ash
Gases
temperature
Wire
Temperature
gas
experiment
Experiments

Keywords

  • Coal devolatilization
  • devolatilization gas species
  • devolatilization kinetics
  • devolatilization products
  • thermobalance reactor
  • wire-mesh reactor

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Cite this

Pyrolysis characteristics of Kazakhstan coals in non-isothermal and isothermal conditions. / Tokmurzin, Diyar; Ra, Ho Won; Yoon, Sung Min; Yoon, Sang Jun; Lee, Jae Goo; Seo, Myung Won; Adair, Desmond.

In: International Journal of Coal Preparation and Utilization, 01.01.2019.

Research output: Contribution to journalArticle

@article{329538a9c1104cab9e4605ed0a45c27c,
title = "Pyrolysis characteristics of Kazakhstan coals in non-isothermal and isothermal conditions",
abstract = "This study provides combined isothermal and non-isothermal pyrolysis properties of Kazakhstan coals necessary for development and optimization of thermal processes. Devolatilization properties are investigated using thermogravimetric analysis, thermobalance reactor, and wire-mesh reactor experiments at temperatures from 400°C to 1,000°C. Maikuben coal has the highest reactivity at 900°C and Shubarkol coal has lowest ash initial deformation. Turgay coal demonstrates high gas yield at 800°C and above. At temperatures above 800°C tar cracking intensifies, but tar release from Shubarkol coal increased reaching 8.06{\%} of initial mass at 1,000°C. Results demonstrate that Shubarkol and Turgay coals are favorable gasification feedstock.",
keywords = "Coal devolatilization, devolatilization gas species, devolatilization kinetics, devolatilization products, thermobalance reactor, wire-mesh reactor",
author = "Diyar Tokmurzin and Ra, {Ho Won} and Yoon, {Sung Min} and Yoon, {Sang Jun} and Lee, {Jae Goo} and Seo, {Myung Won} and Desmond Adair",
year = "2019",
month = "1",
day = "1",
doi = "10.1080/19392699.2019.1594793",
language = "English",
journal = "International Journal of Coal Preparation and Utilization",
issn = "1939-2699",
publisher = "Routledge",

}

TY - JOUR

T1 - Pyrolysis characteristics of Kazakhstan coals in non-isothermal and isothermal conditions

AU - Tokmurzin, Diyar

AU - Ra, Ho Won

AU - Yoon, Sung Min

AU - Yoon, Sang Jun

AU - Lee, Jae Goo

AU - Seo, Myung Won

AU - Adair, Desmond

PY - 2019/1/1

Y1 - 2019/1/1

N2 - This study provides combined isothermal and non-isothermal pyrolysis properties of Kazakhstan coals necessary for development and optimization of thermal processes. Devolatilization properties are investigated using thermogravimetric analysis, thermobalance reactor, and wire-mesh reactor experiments at temperatures from 400°C to 1,000°C. Maikuben coal has the highest reactivity at 900°C and Shubarkol coal has lowest ash initial deformation. Turgay coal demonstrates high gas yield at 800°C and above. At temperatures above 800°C tar cracking intensifies, but tar release from Shubarkol coal increased reaching 8.06% of initial mass at 1,000°C. Results demonstrate that Shubarkol and Turgay coals are favorable gasification feedstock.

AB - This study provides combined isothermal and non-isothermal pyrolysis properties of Kazakhstan coals necessary for development and optimization of thermal processes. Devolatilization properties are investigated using thermogravimetric analysis, thermobalance reactor, and wire-mesh reactor experiments at temperatures from 400°C to 1,000°C. Maikuben coal has the highest reactivity at 900°C and Shubarkol coal has lowest ash initial deformation. Turgay coal demonstrates high gas yield at 800°C and above. At temperatures above 800°C tar cracking intensifies, but tar release from Shubarkol coal increased reaching 8.06% of initial mass at 1,000°C. Results demonstrate that Shubarkol and Turgay coals are favorable gasification feedstock.

KW - Coal devolatilization

KW - devolatilization gas species

KW - devolatilization kinetics

KW - devolatilization products

KW - thermobalance reactor

KW - wire-mesh reactor

UR - http://www.scopus.com/inward/record.url?scp=85063737783&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063737783&partnerID=8YFLogxK

U2 - 10.1080/19392699.2019.1594793

DO - 10.1080/19392699.2019.1594793

M3 - Article

JO - International Journal of Coal Preparation and Utilization

JF - International Journal of Coal Preparation and Utilization

SN - 1939-2699

ER -