[Little Bill]

Everyone that has operated a Coal Fired Boiler KNOWS that you have to balance the Amperage among the pulverizers in service, work in vs work out. The secondary air provides propulsion and a drying effect to the coal and provides O2 for a fire.

Nothing guarantees that the instrumention is going to work. I spent five years as an an I&C supervisor If it can fail it will. The reason you have an operator in the room is to make sure it does not happen.

[deport]

http://www.cnn.com/2007/US/12/19/florida.explosion/index.html

Chemical Plant Blast...... Three confirmed dead

[Ruy Dias de Bivar]

***Everyone that has operated a Coal Fired Boiler KNOWS that you have to balance the Amperage among the pulverizers in service, ***

Not so on this unit. Here we have B&W MPS-89 pulverizers with STOCK feeders, and amps depend on the particular load we have on that particular mill. Right now I am carrying lower loads on the top burner mills with lower amps because I don’t want to slag up the reheat area.
Lower mills are carrying higher loads with higher amps due to the heavier coal input into them.

B&W Boiler, 528 MW right now. Six mills in service.

[Ruy Dias de Bivar]

What type pulverizers do you use?