The Study Of Anti-abrasion And Heat Transfer Characteristics For 300MW CFB Boiler Water-cooled Wall

Circulating fluidized bed boiler inherent circle-nuclear flow structure determines water-cooled wall abrasion will not free, water-cooled walls wear is mainly friction and collision wear. According to the abrasion mechanism, research institutes designed for rank type anti-abrasion beam, aiming at huaibei furnace type and burning coal, the anti-abrasion device is designed on the import type 300MW CFB boiler.Basis on the heat-transfer calculation mathematical model, anti-abrasion beam is compiled with, using this model to calculate the influence of anti-abrasion beam to water-cooled wall heat-transfer, analyzes the influence the anti-abarasion beam to furnace exports temperature and heat transfer coefficient. The analysis results showed that adding anti-abrasion beam have limited impact to heat transfer, and will not affect the main properties of boiler.For analyzing of boiler's effect after adding anti-abarasion beam to boiler parameter.The data collection and analysis is completed about before and after adding anti-abrasion. the analysis results showed that adding exaust smoke temperature and desuperheating water flow changed, but change is limited, do not affect the boiler efficiency, therefore analyzed the power supply coal consumption changes.In order to validate the correctness of the mathematical model, especially the heat flux testing is completed in real furnace.results show that the calculation results with the actual measurement results are consistent, flank verifies the validity of the model.