Process and system for heating or cooling streams for a divided distillation column

A system for separating a plurality of naphtha components, comprising:

• a first column, comprising:
• a dividing imperforate wall with one surface facing a feed and another surface facing a side stream wherein the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections;
• a reboiler;
• and
• a side reboiler receiving a process stream from a side draw from the column at a point below the side stream and below the dividing imperforate wall;
• wherein a heating stream passes through the reboiler and the side reboiler.

A system for separating a plurality of naphtha components, comprising:

• a first column, comprising:
• a dividing imperforate wall with one surface facing a feed and another surface facing a side stream wherein the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections;
• an overhead condenser receiving an overhead stream from the column;
• a side condenser receiving a process stream from a first side draw from the column at a point above the side stream and returning the stream to the column to facilitate separation;
• a reboiler;
• and
• a side reboiler receiving a process stream from a second side draw from the column at a point below the side stream and returning the stream to the column to facilitate separation;
• wherein the first side draw is above the second side draw.