Applicability of IGCC Technology using Low-grade Coal in Asia
(Room Nile 2)
20 Sep 17
2:00 PM
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3:30 PM
Tracks:
Track D - Power Technologies
In Asia, coal will continuously take an important role for increasing power demand in many countries, but at the same time more stringent environmental requirements including global warming issues also need to be secured. In this sense, highly efficient coal utilization systems, such as integrated coal gasification combined cycle (IGCC) power systems using coal gasification is regarded as one of the most effective clean coal technology. Most of the achievements of the technology in the past have been established in U.S., Europe and Japan and the accumulated experiences are now about to be spread all through the world. This paper will discuss 3 topics. Firstly, this paper will summarize the basic feature of IGCC especially related with environmental aspect such as emission including carbon dioxide (CO2), water consumption, by-product handling, etc., through the comparison with those from conventional coal firing technology like USC. The second topic will discuss the technological progress about the latest status of IGCC plant projects. It will cover not only the units with small capacity applying old-fashioned gas turbine frame but those with larger machine with higher combustion temperature, which will start its commercial operation around 2020. Thirdly, the feasibility study result for both IGCC and USC utilizing low grade coal with, for example, higher slagging tendency like low ash melting temperature or high CaO content will be discussed from the viewpoint of both environmental aspect including CO2 emission and project economy. The information shown above will help better and deeper understanding of IGCC technology concerning the field of energy and fuel resource security as well as global environmental needs.