Local steam temperature imbalances of coal-fired boilers at very low load

In order to remain economically viable, even large coal-fired power plants must be operated more often in partial load. Due to an unfavourable coal mills configuration, the local temperatures in the combustion chamber can differ. This can affect the temperatures in two parallel steam lines so much that even a shut-down of the entire system would be necessary. The modelling and subsequent simulation of the plant is a proven way to identify problems and to show the limits of the minimum load.