Heat integration via heat pump on bottom dividing wall column

A dividing wall column system comprising:

• a dividing wall column comprising a dividing wall positioned in a bottom section of the dividing wall column and extending from a bottom of the dividing wall column over only a part of a height of the dividing wall column at least essentially vertically upwards such that that an angle between the dividing wall and a length axis of the dividing wall column is at most 40° to divide the bottom section of the dividing wall column into a first side and a second side;
• a first reboiler outside of the dividing wall column and in fluid communication with the first side of the bottom section of the dividing wall column;
• a second reboiler outside of the dividing wall column and in fluid communication with the second side of the bottom section of the dividing wall column;
• a heat pump in fluid communication with the dividing wall column and the second reboiler and configured to compress a first portion of an overhead product from the dividing wall column;
• a first condenser in fluid communication with a tube side of the second reboiler and configured to receive and cool the compressed first portion of the overhead product;
• a second condenser in fluid communication with the dividing wall column and configured to receive and condense a second portion of the overhead product that bypasses the heat pump;
• and
• a third condenser arranged downstream of and in fluid communication with the first condenser to further condense the compressed first portion of the overhead product.