Rotary Type Air Preheater's Enamel Heat Conduc

Excessibe sulfur and dust in fume discharged by boilers using fuel of coal and oil in power plants can lead to serious corrosion and dust accumulation of heat conduction elements at low temperature section of the air preheater, influencing normal operation of the boiler and reducing energy efficiency. Because enmel heat conduction elements have smooth surface, resistant to corrosion and easy to wash, they can fundamentally resolve this problem, prolong life lime of the air preheater, reduce working cost of the boiler and increase comprehensive benefits of the power plant. The rotary type preheater's enamel heat conduction element is a patent product of the company(Patent No.ZL95207529.6),applied in dozens of electricity plants in their unaminous approval. Rotary Type Air Preheater's Enamel Heat Conduction Elements and Their BasketsMaterial RecommendationThe cold-end layer is heavily subject to corrosion, so it usually uses enamel or Kaodeng steel heat conduction elements, while the hot-end layer and intermediate layer usually adopt plain carbon steel. IndexTechnical StandardTest Methodappearanceconsistent color, no lump, no shedding, no scaling, allowable margin of 1.5mm and black trace in artistic holeeye observationenamel thickness0.34±0.06mmthickness gaugeacid resistanceloss<0.045mg/cm2boiled 2 hours with 1% sulfuric acidadhesionadhesion>95%exert pressure of 140kg/cm2 for 5 secondselectric sparknot more than 2 breakdowns every 930cm2500V electric sparkcoolingno change in water of normal temperatureafter 5 minutes in 360°Cno change after natural coolingafter 5 minutes in 540°C