Glass overheads are typically built (in our standard chemReactor and production plant setups) for multipurpose and semi – batch operation mode under full vacuum. They mostly consist of feeder vessel, a distillation column, condenser and secondary condenser, phase separator, receiver, including valves and pressure equalization piping and a rupture disc as safety device.
For rectification, packed distillation glass columns up to DN600 are used with reflux condenser, a reflux splitter with a reflux controller to set the reflux ratio. In Buchi chemReactors, both systems can be combined.