The evaluation of the thermal efficiency of GTCC system using by-product gas NYasunori TsujiDOkayama Prefectural University, 111 Kuboki, Soja, Okayama, Japan,

摘要

In this paper, the authors have been studied the method of improving the generating efficiency of GTCC using by-product gas that is pretreated blast furnace gas. The generating efficiency of by-product gas fired GTCC is 6% lower than LNG fired GTCC at 1573K combustion temperature. The authors have been studied the method of improving the generating efficiency of GTCC using by-product gas that is pretreated blast furnace gas. The generating efficiency with the gas separation energy has been improved by +4.4% (η=48.8→53.2%) removing CO2 and N2 from blast furnace gas. If this innovative system will be applied to every steelworks in the world, the potential of generating electricity is calculated by 86 billion kWh/year. It is corresponding to reduce ▲ 70 million t-CO2/year.