Research and Application of High-Efficiency Flue Gas Recirculation System for Double-Reheat Unit
In order to solve the problem of severe wear of the overflow parts of the flue gas recirculation fan of the flue gas recirculation system and high system failure rate,this paper deeply analyzes the causes of high failure rate and low operation efficiency of flue gas recircu-lation system caused by the wear of flue gas fan,and puts forward systematic measures to solve the serious wear of flue gas fan from the aspects of flue gas duct and equipment selec-tion,and clarifies the direction of reducing system energy consumption through the compari-son of various flue gas recirculation schemes.The technical scheme proposed in this paper has been verified in a 660 MW ultra-supercritical double-reheat boiler of a project for many years,and has achieved good results,and has been widely used in many projects.The practice has proved that the proposed technical scheme is effective and feasible,and can provide a refer-ence for the further optimization design of the flue gas recirculation reheater temperature con-trol system of the ultra-supercritical double-reheat unit.
double-reheathigh-efficiencyflue gas recirculation
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维普
