Sound expertise required
In search of a solution, the pipeline company‘s technicians turned to EagleBurgmann’s compressor sealing experts. After jointly researching and investigating the causes, it was decided to implement the RoTechBooster, an electrically driven seal gas booster to remedy the situation. A proven seal gas booster that keeps dry gas seals reliably clean not only during standby conditions, but any time insufficient seal gas flow occurs. The rotating design includes the ability to maintain an unlimited pressurized hold.
A suitable RoTechBooster model was selected according to the prevailing operating conditions. The high seal gas contaminant content was managed with a coalescer filter with the additional of a cyclone to remove most of the debris and liquids. This allowed the coalescing filter to manage the remaining fine debris and aerosols more effectively.
A skid was designed with these requirements in mind for delivering the most effective solution. As the seal gas system incorporated fixed orifices for controlling seal gas flow during normal operation, they produced too much restriction for the RoTechBooster to deliver sufficient seal gas flow when operating. The RoTechBooster system was designed to bypass these orifices to ensure sufficient seal gas supply (6 AM3/H) to the seals. The system was designed for the required conditions and manufactured by EagleBurgmann.
In June of 2019 the RoTechBooster with the additional filtration was installed at the site. As there was no major restriction in the seal flow path (fixed orifices bypassed) when the RoTechBooster was operating, the flow produced was 10 Am3/h. The flow was manageable by the filters and the additional consistent flow provided increased assurance the dry gas seals weren’t exposed to dirty process gas.