The technical implementation:
It was possible for us to more than double the power with the final plant to 2.8 MW. This process optimisation was due, for example to a bypass line for the overload which removes the peaks in the steam feed in the first stage of the turbine. Besides the nozzle group control valve (DGRV) in the steam inlet we have designed a partial shut-off after the second stage for better partial load behaviour.
If one assumed in the original planning a turbine capacity of around 1.8 MW at the peak, it was possible with optimised integration of the turbine into the process to increase the capacity to 2.8 MW and even at partial load to considerably improve the turbine capacity.
This optimisation of the turbine to the process was arrived at in joint collaboration by M+M with Caliqua AG and IWB. This was achieved, for example, through a nozzle group control in the steam inlet, the enlargement of the steam inlet nominal size to DN 500, a bypass line integrated into the first stage of the turbine for the overload and an automatic partial shut-off of the second stage in the partial load. For us, a good example of what a great advantage a truly "tailor made" turbine solution can mean for our customer