Moisture readsorption and low temperature oxidation characteristics of upgraded low rank coal

被引：125

作者：

Choi, Hokyung ^{[1
]}

Thiruppathiraja, Chinnasamy ^{[2
]}

Kim, Sangdo ^{[1
]}

Rhim, Youngjoon ^{[1
]}

Lim, Jeonghwan ^{[1
]}

Lee, Sihyun ^{[1
]}

机构：

[1] Korea Inst Energy Res, Clean Coal Ctr, Taejon 305343, South Korea

[2] Anna Univ, Dept Chem Engn, Madras 600025, Tamil Nadu, India

来源：

FUEL PROCESSING TECHNOLOGY | 2011年 / 92卷 / 10期

关键词：

Low rank coal; Upgrading; Low temperature oxidation; Moisture readsorption; Spontaneous combustion; COMBUSTION CHARACTERISTICS;

D O I：

10.1016/j.fuproc.2011.05.025

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This study investigated the behavior of upgraded low rank coal produced by a coal-oil slurry dewatering process regarding moisture readsorption, low temperature oxidation, and spontaneous combustion. The upgraded low rank coal had higher heating values than raw coal. It also showed lower moisture readsorption than raw coal and had less susceptibility to low temperature oxidation and spontaneous combustion. This seemed to result from the coating of the asphalt on the surface of the coal, which covered fine pores and suppressed the active functional groups from reacting with moisture and oxygen in the air. The increasing upgrading pressure negatively affected the moisture readsorption, low temperature oxidation, and spontaneous combustion. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2005 / 2010

页数：6

共 13 条

[1] SELF-HEATING OF COAL AND RELATED MATERIALS - MODELS, APPLICATION AND TEST METHODS [J].

CARRAS, JN ;

YOUNG, BC .

PROGRESS IN ENERGY AND COMBUSTION SCIENCE, 1994, 20 (01) :1-15

[2] A STUDY OF THE LOW-TEMPERATURE OXIDATION OF COAL [J].

ITAY, M ;

HILL, CR ;

GLASSER, D .

FUEL PROCESSING TECHNOLOGY, 1989, 21 (02) :81-97

[3] WATER-ABSORPTION BY COALS - EFFECTS OF PORE STRUCTURE AND SURFACE OXYGEN [J].

KAJI, R ;

MURANAKA, Y ;

OTSUKA, K ;

HISHINUMA, Y .

FUEL, 1986, 65 (02) :288-291

[4]

Kinoshita S, 2010, KOBELCO TECHNOL REV, V29, P93

[5] A study of spontaneous, combustion characteristics of a Turkish lignite:: particle size, moisture of coal, humidity of air [J].

Küçük, A ;

Kadioglu, Y ;

Gülaboglu, MS .

COMBUSTION AND FLAME, 2003, 133 (03) :255-261

[6] Experimental study on drying and moisture re-adsorption kinetics of an Indonesian low rank coal [J].

LI, Xianchun ;

SONG, Hui ;

WANG, Qi ;

MEESRI, Chatphol ;

WALL, Terry ;

YU, Jianglong .

Journal of Environmental Sciences, 2009, 21 (SUPPL. 1) :S127-S130

[7] EFFECT OF THERMAL UPGRADING ON SPONTANEOUS COMBUSTION CHARACTERISTICS OF WESTERN CANADIAN LOW RANK COALS [J].

OGUNSOLA, OI ;

MIKULA, RJ .

FUEL, 1992, 71 (01) :3-8

[8]

Schmidt L. D., 1945, CHEM COAL UTILIZATIO, P627

[9]

Sugita S, 2005, P INT C COAL SCI TEC

[10] Change of combustion characteristics of Indonesian low rank coal due to upgraded brown coal process [J].

Umar, Datin Fatia ;

Usui, Hiromoto ;

Daulay, Bukin .

FUEL PROCESSING TECHNOLOGY, 2006, 87 (11) :1007-1011

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