The gained stability and the speed improvement will allow further investigation in the design of multiple dividing wall columns in future work. With the new approach one does not need to carefully set bounds to avoid non convergent areas. The presented method converges on a large range of variables. Instead of waiting almost half a day for results the time needed for solving one optimization problem, the time needed with the new approach is reduced to around one minute. This means that much more calculations and different optimization problems can be solved in a shorter time.