- 一般社団法人 資源・素材学会
- Journal of MMIJ (ISSN:18816118)
- vol.134, no.10, pp.137-141, 2018-10-31 (Released:2018-10-26)
Coal provides about 40 % of total world primary energy supply now. Coal is one of the most available, affordable and accessible energy resources both in terms of sustainable supply as well as economy. Coal is carbon-intensive fuel and emits a significant amount of carbon dioxide to the atmosphere per unit of heat energy. So it is important to develop coal utilization technologies to minimize environmental impact, so called "Clean Coal Technology". Coal production and consumption trends in the world are changing due to fluctuations in coal prices, policies of governments of various countries, and so on.