Home >

news Help

Publication Information


Title
Japanese:[研究発表1-4-2] 穏和な溶剤処理による低品位炭の自然発火性抑制の試み 
English: 
Author
Japanese: 藤墳 大裕, 蘆田 隆一, 三浦 孝一.  
English: Hiroyasu Fujitsuka, 蘆田 隆一, 三浦 孝一.  
Language Japanese 
Journal/Book name
Japanese:日本エネルギー学会大会講演要旨集 
English: 
Volume, Number, Page     No. 20    pp. 22-23
Published date July 2011 
Publisher
Japanese:一般社団法人 日本エネルギー学会 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Abstract 第20回日本エネルギー学会大会 (ession1 石炭・重質油等)We have recently presented a novel method which can not only dewater but upgrade low rank coals under mild conditions. This method consists of treatment of coals in non-polar solvents, such as 1-methylnaphthalene, at temperatures below 350℃. One of the remaining problems to be solved for this method is whether it can suppress self-ignition of low rank coals. In this study, self-ignition tendencies were examined for the samples prepared from an Australian brown coal by the proposed method. It was found that the treated coal obtained from this method contained little water and had the heating value corresponding to high rank coal. The self-ignition tendency of the extracted fractions was remarkably suppressed due to their small pore surface area which minimizes oxygen access to them. The self-ignition tendency of the solvent treated coal was smaller than the pyrolyzed coal, which was caused by the coating of the extracted fractions. However, the self-ignition tendency of the solvent treated coal was still slightly higher than that of raw coal.

©2007 Tokyo Institute of Technology All rights reserved.