CN EN
4S Coupling Based Air Preheater Intelligent Anti-blocking Safety Pre-control System
4S Coupling Based Air Preheater Intelligent Anti-blocking Safety Pre-control System
Based on the process mechanism model of air preheater corrosion and blockage, the 4S monitoring and process coupling analysis are deeply integrated to thoroughly solve the problems of air preheater corrosion and blockage, and assist in the analysis ofabnormal expansion and jamming as well as fire warning: a gas analysis unit is designed and installed to effectively collect 4S data. Construct a 4S multi-source fault correlation model; Construct a model for abnormal jamming of the heating surface andfire conditions; Establish a model for judging the heat exchange efficiency and air leakage rate of the air preheater.

Key technologies

Gas analysis unit, including ammonium bisulfate analysisSO2A data acquisition system for concentration and moisture analysis, and real-time analysis and calculation of flue gas flow rate, effectively ensuring model judgment. Construction FourSDynamic analysis and judgment-Warning-Alarm model, intelligent linkage cleaning unit, to achieve early corrosionPilot treatment for sedimentation blockage to prevent corrosionSedimentationThe blockage continues to develop. Build a dynamic early fire situation analysis system to achieve an intelligent closed loop of early warning, alarm and handling. Build a rotor expansion and jamming analysis model for air preheaters to achieve an intelligent closed loop for jamming early warning, alarm and handling.

resource/images/78960601b93e465abc544fe3abdefe8c_24.jpg

Expected effect

Prevent corrosion and blockage of the air preheater, enhance the load-carrying capacity, and avoid fan surge and load limiting events caused by air preheater blockage. Control early fire situations and prevent fires from occurring. Under overload and special working conditions, prevent rotor expansion and deformation. To prevent corrosion and blockage of the heat exchange surface of the air preheater, it is expected to reduce the overall power consumption of the fan0.3 %; Assist in operational decision-making, reduce overall smoke exhaust losses, and it is expected that the overall efficiency will be improved by approximately0.2 %.

Related products