Lubricating Exhaust Fan Bearing in FGD Systems
Since the Clean Air Act (CAA) in 1970, U.S. power utilities have made significant progress installing pollution control equipment to curb power plant stack emissions. The CAA Amendments of 1990 heightened the urgency of installing a large number of Flue Gas Desulfurization (FGD) systems, or scrubbers, in a relative short period of time. As of 2005 with the passage of the Clean Air Interstate Rule (CAIR) along with plans for building new coal-fired stations, a steady number of new scrubbers have been planned for construction through 2030.
Nye Lubricants developed a high temperature and chemically inert oil for use in lubricating the blade pitch bearings of axial flow exhaust fan designs used in the FGD scrubbers installed at coal fired power plants. A unique synthetic oil that is completely fluorinated, Uniflor™ 8190 provides resistance to oxidation and breakdown. Made with PFPE as its base oil, 8190 performs at temperatures up to 250°C, a number well over that of the flue gas exhaust temperatures.
| Product | Chemistry | Temperature Range |
Kinematic Viscosity | Evaporation |
|---|---|---|---|---|
| UNIFLOR 8190 | PFPE | -25 to 250°C | 100°C= 40 cSt 40°C= 388 cSt -20°C= 92461 cSt |
0.06 % |
The oil is applied inside of the fan hub to lubricate the double row spherical roller bearings that enable continuous variable pitch adjustment for the 20 fan blades. Uniflor 8190 is non-flammable and highly resistant of the aggressive chemical environments and corrosive exhaust gasses.
For more info on this lubricant, download our product overview.
