Application of data from cold-state tests of circulating fluidized bed boilers?
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For example, cold-test measurements on a CFB boiler showed that, with a constant speed of the primary fan, a bed thickness of 450 mm resulted in a critical damper opening of 45%, and the current drawn by the primary fan was 100 A. Question: How should these data be used during operation at high temperature?
The key here is to keep track of certain critical values; when the operating conditions fall below these levels, the resistance of the material layer becomes too high, which hinders the formation of an effective combustion zone!
The data from the cold-state tests of circulating fluidized bed boilers are mainly used during the boiler startup process
A cold test must be conducted before each ignition to basically determine whether the system is functioning properly. During ignition, if the wind volume is below the critical value, it may result in an unstable fluidization state, leading to coking.