Effect of microstructural changes on gasification reactivity of coal chars during low temperature gasification

Atul Sharma; Hayato Kadooka; Takashi Kyotani; Akira Tomita

doi:10.1021/ef0101513

Effect of microstructural changes on gasification reactivity of coal chars during low temperature gasification

Atul Sharma, Hayato Kadooka, Takashi Kyotani, Akira Tomita

ENG - Chemical Engineering

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

An attempt has been made to quantitatively investigate the effect of microstructural changes on gasification reactivity of coal chars. Pocahontas No. 3, Illinois No. 6, and Beulah-Zap coal char samples were gasified in 1% O₂ at 500 °C or 600 °C up to 90% (daf) conversion, and their structure were observed under a high-resolution transmission electron microscope (HRTEM). A quantitative structural analysis was done based on HRTEM images to obtain structural parameters such as number of stacks, layer size diameter, and their distributions using an image analysis algorithm. Effect of mineral matter on structural changes was also studied by carrying out gasification experiments with demineralized chars. The gasification reactivity of these chars was correlated with the structural parameters.

Original language	English
Pages (from-to)	54-61
Number of pages	8
Journal	Energy and Fuels
Volume	16
Issue number	1
DOIs	https://doi.org/10.1021/ef0101513
Publication status	Published - 2002 Jan

ASJC Scopus subject areas

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology

Access to Document

10.1021/ef0101513

Cite this

@article{83071e80497d40aa8406b749608d1a4e,

title = "Effect of microstructural changes on gasification reactivity of coal chars during low temperature gasification",

abstract = "An attempt has been made to quantitatively investigate the effect of microstructural changes on gasification reactivity of coal chars. Pocahontas No. 3, Illinois No. 6, and Beulah-Zap coal char samples were gasified in 1% O2 at 500 °C or 600 °C up to 90% (daf) conversion, and their structure were observed under a high-resolution transmission electron microscope (HRTEM). A quantitative structural analysis was done based on HRTEM images to obtain structural parameters such as number of stacks, layer size diameter, and their distributions using an image analysis algorithm. Effect of mineral matter on structural changes was also studied by carrying out gasification experiments with demineralized chars. The gasification reactivity of these chars was correlated with the structural parameters.",

author = "Atul Sharma and Hayato Kadooka and Takashi Kyotani and Akira Tomita",

year = "2002",

month = jan,

doi = "10.1021/ef0101513",

language = "English",

volume = "16",

pages = "54--61",

journal = "Energy & Fuels",

issn = "0887-0624",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - Effect of microstructural changes on gasification reactivity of coal chars during low temperature gasification

AU - Sharma, Atul

AU - Kadooka, Hayato

AU - Kyotani, Takashi

AU - Tomita, Akira

PY - 2002/1

Y1 - 2002/1

N2 - An attempt has been made to quantitatively investigate the effect of microstructural changes on gasification reactivity of coal chars. Pocahontas No. 3, Illinois No. 6, and Beulah-Zap coal char samples were gasified in 1% O2 at 500 °C or 600 °C up to 90% (daf) conversion, and their structure were observed under a high-resolution transmission electron microscope (HRTEM). A quantitative structural analysis was done based on HRTEM images to obtain structural parameters such as number of stacks, layer size diameter, and their distributions using an image analysis algorithm. Effect of mineral matter on structural changes was also studied by carrying out gasification experiments with demineralized chars. The gasification reactivity of these chars was correlated with the structural parameters.

AB - An attempt has been made to quantitatively investigate the effect of microstructural changes on gasification reactivity of coal chars. Pocahontas No. 3, Illinois No. 6, and Beulah-Zap coal char samples were gasified in 1% O2 at 500 °C or 600 °C up to 90% (daf) conversion, and their structure were observed under a high-resolution transmission electron microscope (HRTEM). A quantitative structural analysis was done based on HRTEM images to obtain structural parameters such as number of stacks, layer size diameter, and their distributions using an image analysis algorithm. Effect of mineral matter on structural changes was also studied by carrying out gasification experiments with demineralized chars. The gasification reactivity of these chars was correlated with the structural parameters.

UR - http://www.scopus.com/inward/record.url?scp=0036160134&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036160134&partnerID=8YFLogxK

U2 - 10.1021/ef0101513

DO - 10.1021/ef0101513

M3 - Article

AN - SCOPUS:0036160134

VL - 16

SP - 54

EP - 61

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 1

ER -

Effect of microstructural changes on gasification reactivity of coal chars during low temperature gasification

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this