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The application of lignite pre-drying technologies in next generation of lignite power plants by utilizing low pressure steam as a drying medium instead of hot recirculated flue gas -combined with thermal utilization of the vaporized coal moisture -is expected to bring efficiency increase of 2-4 percentage points in future lignite power plants compared with today's state of the art. The pre-drying concept is of particular importance in Greek boilers firing lignite with a high water and ashdoi:10.2298/tsci110509120a fatcat:c3u2r2sekzewvgejsg5h4j5eue