A number of pilot scale oxy-fuel experiments in the 1980's and 1990's, primarily to produce a stream of CO_2-rich flue gas for EOR purposes, have provided the characteristics of oxy-fuel technology based on coal, with its potential for CO_2 capture and sequestration. A recent increase in efforts has been driven by the need for technology options for step-change reductions in CO_2 emissions. These efforts have indicated that the technology is competitive with the other primary options of Post-Combustion (amine capture) and Pre-Combustion (IGCC) systems. Greatly reduced NO_x emissions, confirmed in several pilot-scale measurements, are seen as a further advantage of the technology. The technology has not been demonstrated at practical scale, but demonstrations of the firstgeneration technology are planned. The issues requiring demonstration and further study are primarily related to operation and clarifying design issues.
展开▼
