Multiple distillation columns are arranged according to process requirements, supporting vacuum distillation operation with automatic control of reflux ratio and reboiler temperature for continuous cutting and purification of light and heavy fractions. The HMI features a Siemens touchscreen paired with a process mimic flow diagram on the cabinet door, centrally displaying and logging reboiler temperature, vacuum level, and reflux ratio. Both the reboiler and distillate receivers incorporate quick-opening flanges and sight glasses for convenient disassembly, cleaning, feedstock changeover, and observation of internal column conditions. All components are housed in a stainless-steel cabinet with Ex flameproof electrical and instrumentation configuration, fitted with heavy-duty casters for whole-unit positioning and transfer.