To keep substances in a pipeline at the correct temperature, polyurethane foam (PUF) insulation coating is commonly used for hot oil transmission lines as well as in district heating and cooling. Multi-layer coating with polypropylene (PP) foam providing high thermal insulation; this is used for deepwater pipeline projects. In some cases glass synthetic PP (PP enforced with glass fibre spheres) is used instead of PP foam.
How it Works
Pipe-in-pipe application consists of an inner pipe and an outer jacket; the space between them is filled with PUF. Another manner for applying PUF is spraying PUF onto a rotating pipe, with an optional extra mechanical protection layer.
Multi-layer coating with polypropylene (PP) foam providing high thermal insulation; this is used for deepwater pipeline projects. In some cases glass synthetic PP (PP enforced with glass fibre spheres) is used instead of PP foam.
On top of a 3-layer PP coating, various layers of PP foam ensure a pipe gets the insulating characteristics required. Finally, mechanical protection is added with a solid top layer of PP.
The Full Scope:
PU Foam Coating
- PUF injectors
- Spray booth
- Jacket system (spiro or PE tubes for pipe-in-pipe application)
- PE extruder in case of PUF
PP Foam Coating
- Extruders with gravimetric feeding system for foam application
- Extruder for PP top layer application
- Quench
