Fan erosion control

Abstract

This paper deals with ways of controlling fly-ash erosion in coal-fired power plant fans. Computer calculations of particle trajectories through fans and of the resulting erosion rates are made for fans of varying designs to establish their relative erosion tolerance. An experimental study of the erosivity of fly-ash from burning bituminous and subbituminous coals and lignites is presented. The factors in obtaining highly erosion-resistant coatings, and the erosion resistance of advanced fly-ash armoring systems are examined.