Accident Handling 40: What are the symptoms of tube failure in the reboiler of a circulating fluidized bed boiler?
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What is the phenomenon of tube rupture in the reboiler of a circulating fluidized bed boiler?
(1) Closely monitor changes in bed temperature and bed pressure, and strengthen the inspection and monitoring of the leakage area. (2) Try to maintain the drum water level, and appropriately reduce the steam pressure and load. (3) If the bed temperature drops rapidly or the water level cannot be maintained, the furnace should be shut down immediately. (4) After the boiler is shut down, if the water level does not rise even after increasing the water inflow, the water inflow should be stopped, and it is strictly prohibited to open the economizer recirculation valve. (5) After shutting down the furnace. One exhaust fan should be kept running, and it should be stopped once all the steam in the furnace has been removed.