Efficient Use of Low Rank Coal: Current status of low rank coal utilization
Despite vast reserves,low rank coals are not used as a main fuel in industry because their high moisture content,potential spontaneous combustion in transportation and storage,and the low thermal efficiency during the combustion in conventional power plants.With a view to secure and strengthen low rank coals position as high available energy source,in recent years many attempts have been made to develop technologies for an energy-efficient upgrading process.This paper reviews these technologies mainly categorized as drying for reducing moisture,stabilization for decrease selfheating characteristics and cleaning the coal for reducing mineral content of coal.Drying technologies consist of both evaporate and non-evaporative types.There are also highly advanced coal cleaning technologies that produce ash-free coal.The paper discusses some of the promising upgrading technologies aimed at improving these coals in terms of their moisture,ash and other pollutants.Koreas activity for the drying and stabilization technologies will be introduced in this paper and the utilization of dried low rank coal also introduced.
Low Rank Coal Upgrading Drying Dehydration Spontaneous combustion
Sihyun LEE Sangdo KIM Hokyung CHOI Donghyuk CHUN Younjun RHIM Jiho YOO Jeongwhan LIM
Clean Coal Center,Korea Institute of Energy Research,Daejeon 305-343,Korea (South)
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
593-594
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）