High-temperature-resisting abrasion-resisting material for circulating fluidized bed boiler

Abstract

The invention discloses a high-temperature-resisting abrasion-resisting material for a circulating fluidized bed boiler. The high-temperature-resisting abrasion-resisting material comprises, by mass percent, 2.2% to 3.4% of Nb, 1.34% to 2.5% of Si, 16% to 25% of Cr, 1.0% to 2.5% of Mn, 0.5% to 1% of Mo, 1.2% to 2% of Cu, 0.1% to 0.3% of V, 0.02% to 0.2% of Ti, 0.5% to 1.5% of Al, 0.5% to 1.5% of W, 2% to 8% of Ni, 0.05% to 0.6% of C, 0.5% to 2% of Ce and the balance Fe. The prepared high-temperature-resisting abrasion-resisting material for the circulating fluidized bed boiler is excellent in high temperature corrosion resistance and high temperature wear resistance performance.

Description

Technical field [0001] The invention relates to the technical field of materials, in particular to a high temperature resistant and abrasion resistant material for circulating fluidized bed boilers. Background technique [0002] The difference between a circulating fluidized bed boiler and a conventional boiler is that its combustion system is different. Gas-solid material separation equipment and solid material recirculation equipment are the main features of circulating fluidized bed boilers. The combustion of a circulating fluidized bed boiler includes two processes, an internal cycle and an external cycle. The internal cycle is the cycle process in the furnace, that is, the flue gas moving at high speed in the furnace is in close contact with the solid particles with strong turbulence disturbance. The fluidized combustion reaction process of particle backmixing. The external circulation is the process of collecting most of the high-temperature solid particles outside the fur...

AI Technical Summary

Problems solved by technology

This defect has not been well resolved, which limits the further popularization and application of circulating fluidized bed boilers.