What is the reason for coking and blockage of the boiler slag discharge pipe after installing a return air fan in a 75t boiler?

2017-06-27View Original

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What is the reason for coking and blockage of the boiler slag discharge pipe after installing a return air fan in a 75t boiler?

Reply #22017-08-04

It is possible that the increase in the amount of return material has led to an increased amount of slag discharged from the air distribution plate; as a result, the inner diameter of the slag discharge pipe is too small, and it can be replaced with one that is larger.

Reply #32017-09-13

The issue lies in the high carbon content of the fly ash in the fluidized bed boiler, which prevents it from reaching operating load. Engineer Liu 13002709449

Reply #42017-09-21

There is likely no direct cause; it may be that the air caps around the slag discharge holes are damaged, resulting in poor local fluidization and high temperatures.

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