酸素燃焼発電プラントの実証運転成果概要: カライド酸素燃焼プロジェクト

摘要

We are facing global warming due to the increase levels of atmospheric carbon dioxide (CO_2) which is discharged from coal fired power plants as one of the main sources. However, coal remains as one of the most important primary energy resources for reliable and low cost electricity generation. From a global climate perspective, this is why it is so important to develop technologies to reduce CO_2 emissions from coal fired power plants. IHI has been developing oxyfuel combustion technology since 1989. Subsequently, the Callide Oxyfuel Project commenced the demonstration of oxyfuel power generation in March, 2012. During the demonstration operation for approximately three years, many tests were conducted and significant data collected. From a result, the difference between airfiring and oxyfiring in terms of operational flexibility, plant efficiency and combustion characteristics were confirmed. In addition, the applicability of an oxyfuel power plant for commercial CO_2 capture and N_2 utilization, in the cost-effective manner, has been evaluated. In this paper, some operational results of 30MWe oxyfuel power plant in the Project and the possibility of selling N_2 gas using oxyfuel combustion process are explained.%2015年11月初め気象庁より,2014年の世界平均CO_2濃度が397.7ppmを記録し，過去最高との記事が発表された。また,同年11月末には，COP21が始まろうとしている。この中で，世界180カ国が削減目標を掲げ,CO_2排出の96%をカバーする予定であることなど，その動向が注目されている。日本は，2030年度に2013年度比で26%のCO_2排出削減目標が国際公約となっている。