Review on high temperature corrosion of PCF boilers in Poland

The paper presents selected data on power industry in Poland. The information given comprises electric energy production, number of power plants, steam and fuel (coal) characteristics as well as chemical compositions of construction materials being currently in use for furnace wall and superheater tubing. Briefly discussed are also the results of investigations on fireside corrosion of pcf boilers. It has been found that the high temperature corrosion phenomena observed on furnace wall tubes in the vicinity of burners are related with local reducing conditions and chlorine content in coal whereas those encountered on superheater tubes are associated with fused ash deposits. Preventive measures to combat fireside corrosion and slagging planned for the nearest future are the application of bimetallic coextruded tubes and the dosage of additives in coal combustion.