Above the dividing walls, the liquid stream is split using a combination of liquid collecting trays and electro-pneumatic shaking funnels with an adjustable shaking frequency. The liquid split ratio can be manipulated by setting the residence time of the funnel in one of the two possible positions. There is no active vapor split control during operation, but the splits can be adjusted in between column operation. For this purpose, orifices with different cross-sectional areas are inserted into the prefractionator, middle column, and main column above the two vapor splits. This affects the pressure drop across each part of the column and thus, the distribution of the vapor. Liquid split ratios RL and vapor split ratios RV and are defined according to equations ( ) and ( ) in this work: