SAUDI ELCTRICITY COMPANY-EOA GENERATION TECHNICAL SUPPORT DEPARTMENT

摘要

Flue Gas temperature increased in everywhere of boiler gradually and the economizer outlet gas temperature reached 400 degree C by 10 years. It is difficult to investigate the root causes of temperature increasing under the operation The high flue gas temperature caused degradation to the primary Superheater elements and Economizer. Economizer skin casing has experienced deterioration due to being exposed to recent high economizer outlet gas temperatures, occasionally around 425 degrees C. High flue gas temperature has caused embrittlement and deterioration of Gas Recirculation Fan impeller material