タイトル平成21年度~平成22年度成果報告書 クリーン・コール・テクノロジー推進事業 CO2排出量の削減に向けた石炭の低炭素化利用に関する調査 (H21~H22)
報告書年度2009 - 2010
英文要約Title: Research for Low-carbon Coal Utilization towards reduction of CO2 emission
 In Japan efficient coal utilization is important in consideration of the environment to create a best mix of energy resources including coal with excellent fuel economy and security of supplies. On the other hand, reduction of CO2 emission brought by advanced coal utilization is requested on a global basis. In this research, low-carbon coal utilization technologies were examined to show the contribution to reduction of CO2 emission in Japan. Each Clean Coal Technology, CCT, was characterized and the cost-effectiveness was analyzed from reduction of CO2 emission to clarify them quantitatively. The committee was established in April of 2009 and was held six times to discuss CCT technically under Clean Coal Subcommittee of the Advisory Committee on Natural Resources and Energy. Future technical framework and directions of research and development in the fields of high-efficient coal power generation and multi-purpose coal utilization were discussed in the committee for CCT, referring the presentation of the organizations developing the technologies. First, clarification of technical challenges and comparison in low-carbon coal use were executed in CCS, coke production and fluidized bed combustion. Next, the technologies for CO2 recovery and thermal power generation were organized from the point of view of adaptability and cost of power generation to position CCS in CCT. The recent projects on CCT were introduced. Artificial Super Coal, ASC, which can be applied for coke production from low-rank coal, was technically and economically evaluated. ASC is expected to decrease the consumption of coking coal in coke production. Oxy-fuel applied for Fluidized Bed Combustion, which is expected to be for small power stations, was examined with similar processes to show its potential. Second, contribution of CCT towards reduction of CO2 emission was evaluated with simulation. It was calculated how the cost of power generation varied in the case of CO2 recovery, referring the existing simulation. Adjusting parameters and conditions, the framework for sensitivity analyses for IGCC was made. Thirdly, about Chemical Looping Combustion receiving a lot of attention as efficient CO2 recovery from innovative CCT, the research and development trend in the world was recognized and economical evaluation was carried out, taking participate in an international conference and doing an overseas research work. Next about support measures to development of CCT in the US, Europe, Australia, and Indonesia, the historical transition and the recent trend were examined, focusing on the relation with CCS. At Japan-Indonesia CCT seminar held in Indonesia, the challenges and the potentials on efficient use of low-rank coal were discussed with local persons related to CCT. Lastly, the report on future technical framework and directions of research and development of CCT was compiled with the information discussed at the committee as mentioned above to characterize the CCT.