Potential and methods for increasing the flexibility and efficiency of the lignite fired power unit, using integrated lignite drying

Present increase in the flexibility of coal power plants is a very important and complicated task. The paper discusses the problem of improving the flexibility and efficiency of the power unit on the example of a brown coal-fired unit including the option of low-temperature pre-drying of lignite. Drying technologies using low-temperature heat sources are analysed. Depending on the coal drying method, an up to 5% increase in power unit efficiency...