@article{oai:muroran-it.repo.nii.ac.jp:00009632, author = {濵中, 晃弘 and HAMANAKA, Akihiro and SU, Faqiang and 蘇, 発強 and 板倉, 賢一 and ITAKURA, Ken-ichi and TAKAHASHI, Kazuhiro and 髙橋, 一弘 and 児玉, 淳一 and KODAMA, Jun-ichi and DEGUCHI, Gota and 出口, 剛太}, issue = {12}, journal = {Energies}, month = {Feb}, note = {application/pdf, Underground coal gasification (UCG) is a technique to recover coal energy without mining by converting coal into a valuable gas. Model UCG experiments on a laboratory scale were carried out under a low flow rate (6~12 L/min) and a high flow rate (15~30 L/min) with a constant oxygen concentration. During the experiments, the coal temperature was higher and the fracturing events were more active under the high flow rate. Additionally, the gasification efficiency, which means the conversion efficiency of the gasified coal to the product gas, was 71.22% in the low flow rate and 82.42% in the high flow rate. These results suggest that the energy recovery rate with the UCG process can be improved by the increase of the reaction temperature and the promotion of the gasification area.}, title = {Effect of Injection Flow Rate on Product Gas Quality in Underground Coal Gasification (UCG) Based on Laboratory Scale Experiment: Development of Co-Axial UCG System}, volume = {10}, year = {2017}, yomi = {ハマナカ, アキヒロ and イタクラ, ケンイチ and タカハシ, カズヒロ and コダマ, ジュンイチ and デグチ, ゴウタ} }