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The experimental study of 1 ton/day coal gasifier using Adaro coal
박세익(Park, Seik),정재화(Jung, Jaehwa),서혜경(Seo, Hai-Kyung),이중원(Lee, Joongwon),주지선(Ju, Ji-Sun),지준화(Ji, Junhwa),김미영(Kim, Miyoung),김기태(Kim, Kitae) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
Korea Electric Power Research Institute (KEPRI) has developed a compact coal-gasification system to accumulate our experiment skills. The combustion furnace for residual oil was modified as a small size coal gasifier. Recently, coal feeding system was also upgraded to control coal feed rate more accurately. Our research group has conducted several experiments to find out the effect of O₂/coal ratio on the cold gas efficiency. Furthermore, the effect of N₂/coal ratio on the transport characteristics was also studied. According to the calculation of heat and mass balance, the cold gas efficiency was estimated to the maximum at O₂/coal ratio of around 0.73. But small size gasifier such as ours required higher value of O₂/coal ratio than that of the theoretical estimation. On the optimal N₂/coal ratio, we noticed that the coal feed rate was intimately related with the transporting gas pressure and the pipe diameter.