What do I have to consider in the place of installation of the NLPA150 / NLPA250? Which conditions must be met?
Generally, the light ends removal system must be installed at least 2m above the highest point (expansion tank) to operate it using gravity. The nitrogen for the light ends removal system flows through a nitrogen anti-cavitation valve from the expansion tank.
Because the passive light-ends removal works without its own pump, the return flow and the flow of the distillation tank must be connected on the intake and outlet side of the primary circulation pump (in the return flow of the heat transfer oil heater).
It should be connected to the flow line of the thermal oil system. The flow and return flow with the primary circulation pump between them.
With this, pay special attention to the following interface parameters:
| Connection valves – thermal oil (inlet) | Nominal diameter DN25 |
| Connection valves – thermal oil (outlet) | Nominal diameter DN50 (NLPA150) / DN80 (NLPA250) |
| Cooling water valves | Nominal diameter 3/4´´ (NLPW250) |
| Thermal oil – flow | min. 1 bar + static height of the expansion tank + overpressure due to nitrogen blanketing |
| Thermal oil – return flow | – |
| Recommended inlet temperature | 250 °C |
| Nitrogen supply | Via expansion tank |
| Air-cooled (NLPA150 / NLPA250) | 15 – 30 °C |
| Cooling water (NLPW250) | 2 – 4 bar |
