In coal power plants, the heads on the flue gas desulphurisation plants – which are often up to 80 m in height – must be cleaned on a regular basis.
Over time, very hard and rock-like deposits – similar to stalactites – build up around the edges of the combustion chamber. The system’s performance suffers dramatically as these deposits constantly continue to grow. There is also the risk of larger pieces coming loose and falling, which is a safety hazard. As such, the deposits must be removed on a regular basis to ensure safety and maintain the system’s performance.