Takashi Kiga

Test Results of Oxy-fuel Combustion and Outline of Demonstration Project in Australia

Oxy-fuel combustion is expected to be one of the promising systems on CO2 capture from pulverized-coal fired power plant, and enable the CO2 to be captured in a more cost-effective manner compared to other CO2 capture process. Some studies in this area were implemented under Australia-Japan consortium established in 2004. The comparative testing of the important components by using three Australian coals has been recently conducted under both oxy-fuel and air combustion conditions. The purposes of these tests were to obtain design data on flame stability, combustion characteristics and plant operation including turn-down test. The tests have indicated a number of important outcomes including a good comparison of normal air with oxy-fuel combustion, significant reduction in NO x mass emission rates under oxy-fuel combustion and the collection of data to validate other combustion modeling work.

Application and Demonstration of Oxyfuel Combustion Technologies to the Existing Power Plant in Australia

Oxyfuel combustion is able to directly make the highly concentrated CO2 from the flue gas of pulverized coal fired power plant and, therefore, is expected as one of the promising technologies for CO2 capture. We are advancing the Oxyfuel combustion demonstration project, which is called Callide Oxyfuel Project, with the support of both Australian and Japanese governments. Currently the boiler retrofit work is completed and the commissioning in air combustion is going on. In this paper, we introduce the general outline of the Callide Oxyfuel Project and its progress.