calculation of false air entry in coal mill

Sir,

We are supplying hot air from cooler to coal mill.I want to check the false air entry into the mill. Is there any method to do that...

Hare Ram

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Re: calculation of false air entry in coal mill

You can use:

1. Mass balance

2. Heat balance

3. Oxygen balance (oxygen correction)

easiest is Oxygen balance that you measrue oxygen going in and out and do oxygen balance base on this formula:

V2 = Vt (21-Oout)/(21-Oin)

V2 = false air valume

Vt = total volume (V1 + V2)

Oout = Oxygen % in total volume  

Oin = Oxygen % in inlet

Regards;

FJalali

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