No.19 低品位炭の現地改質による調達モデル設定とコスト推計(熱分解・コークス(5)、ガス化・燃焼・液化(1))

抄録

The low rank coal such as subbituminous coal and lignite occupies about half of the recoverable coal reserves in the world. While the low rank coal has lower price and lower ash, it has higher moisture, lower calorific value and higher spontaneous combustibility. The progress of modification technical developments are enabling use in distant place from its mine. We selected the supply models from various modification technologies in consideration of the progress stage, and estimated the total costs assuming that modification is carried out near the mine. Results showed that the low rank coal has price competitiveness if a stripping ratio is small, modification cost is low, or the subsidy of fuel is available.