The conditions inside of a coal-fired power plant can place heavy stress on components. The dampers and burners have to deal with high temperatures and the presence of particulate. Bearings functioning in this environment have to be durable and must be able to operate without frequent maintenance.
This was not the case at one North American coal plant. The plant manager and
his staff spent too much time maintaining the bearings inside the wind boxes
that control the air supply to the combustion process. The bearings still
failed regularly despite hours of work each week. Bearing failure meant that
the combustion mix had fluctuated, leading to damaged boiler tubes, higher
emissions and increased fuel costs.
By switching from lubrication-hungry roller-element bearings to GRAPHALLOY
self-lubricating bushings, the plant greatly reduced maintenance demands while
achieving a more predictable combustion mix. Click here to read more...