Can explosions occur in the drum slag cooler of a circulating fluidized bed boiler?
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This post was last edited by *anpangpang on 2015-7-5 19:48. 1. Can an explosion occur in the drum slag cooler of a circulating fluidized bed boiler?
If not handled properly, an explosion can occur. Several explosions of cold slaggers in circulating fluidized bed boilers have taken place in China; the main cause is a disruption in the supply of cooling water. During slag discharge, the high temperature causes the water inside to expand and increase in pressure, turning it into dangerous saturated water. Eventually, this pressure exceeds the tolerance limit of the drum, leading to an explosion
I really haven’t thought about this issue in detail; I’m still learning. Temperature interlock at the cold slag machine outlet ； There are also pressure relief valves on the drum ； The outlet of the cold slag machine is generally connected to a high-level thermal deaerator, and the feedwater pressure is not high either. Due attention should be paid to details such as safety accessories and operating parameters in the work.
I don’t think so. Isn’t there a safety valve?
Improper operation of the slag cooler can lead to explosions. Our company experienced an attempted explosion in such a situation: after the slag cooler started operating, cooling water was not supplied as required by the operating procedures. Fortunately, it hadn’t been running for long; when cooling water was finally added, a pipe burst. If the slag cooler had been running for a longer period before cooling water was supplied, an explosion would definitely have occurred.