Recent stream of development and utilization of coal energy

[3601-06-01] Activities on Development of Compact Underground Coal Gasification (UCG) syste

○Akihiro Hamanaka¹, Ken-ichi Itakura², Faqiang Su³, Jun-ichi Kodama⁴, Gota Deguchi⁵ (1. Kyushu University, 2. Muroran Institute of Technology, 3. Henan Polytechnic University, 4. Hokkaido University, 5. Underground Resources Innovation Network)

Chairman: Takashi Nakamura(JCOAL)

Keywords:Underground coal gasification, Unused coal, Co-axial system, Acoustic emission

Underground coal gasification (UCG) is a technique to extract energy from coal in the form of heat energy and combustible gases through the chemical reactions in the underground gasifier. This technique enable to recover the coal energy resources abandoned in the underground for either technical or economic reasons by gasification in-situ. This paper describes our activities and future task for the development of a co-axial UCG system with compact, safe, and high efficient, suggested as a local energy resource.