As a consequence of the unpromising simulation results for the discontinuous start-up process, it is not investigated experimentally. For this reason, the experimental verification of the simulation results begins with scenario I from Section 2.3.2, where the reboiler is initially filled with mainly heavy boiler. The temporal evolution of the product temperatures and product purities is depicted in Fig. . The dashed vertical line indicates the introduction of the feed stream, and the dotted vertical line indicates the activation of the product draws. The time that is required for the product streams to approximately reach steady state for this and all following scenarios is shown in Table . Listed times are to be understood as rough estimations, as the relatively large time difference between the sample points does not allow for a more accurate determination.