Analysis of The Causes of Bending Deformation of Biomass Boiler Screen Superheater
This article analyzes the reasons for the deformation of the high-temperature superheater tube screen in the biomass circulating fluidized bed of a 40 MW unit in a certain power plant during the unitial starup stage.It is believed that the excessive amount of desuperheating water spray in the boiler during the initial stait-up stage causes steam fluorescence in the high-temperature superheater tube screen,And the wall temperature deviation of the superheater tube sreen fiuctuates greatly,Leading to the bending ang deformation of the tube sreen.In response to this issue,It is recommen-ded that operators strictly control the amount of desuperheating water sprayed during the initial stage of boiler startup,and quickly pass through the initial stage of boiler statup to avoid pipe screen ben-ding problems.
40MW biomass circulation fluidized bed boilerWall temperature deviationDesuper-heating waterBent pipe screen
万方数据
维普
