High-temperature and abrasion resisting high manganese material for circulating fluidized bed boiler

Abstract

The invention discloses a high-temperature and abrasion resisting high manganese material for a circulating fluidized bed boiler. The material comprises the following components in percentage by mass: 2.2-3.4 of Nb, 1.34-2.5 of Si, 16-25 of Cr, 10-18 of Mn, 0.5-1 of Mo, 1.2-2 of Cu, 0.1-0.3 of V, 0.02-0.2 of Ti, 0.5-1.5 of Al, 0.5-1.5 of W, and the balance of Fe. The circulating fluidized bed boiler prepared by the material is excellent in high-temperature corrosion resistance and high-temperature abrasion resistance.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a high-temperature-resistant and abrasion-resistant high-manganese material for a circulating fluidized bed boiler. 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 circulating fluidized bed boiler includes two processes of internal circulation and external circulation. The internal circulation is the circulation 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 turbulent disturbance, and there are a large number of Fluidized combustion reaction process with particle backmixing. The outer circulation is the process of collec...

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.