combustion air

You need ultimate analysis of coal and refer standard book on Cement heat balance calculations for the same.

Dear Armankhan

You need following analysis for coal.

C, H2, S, O2

C+ O2 ....>  CO2

2H2 + O2....> 2H2O

S+ O2.....> SO2

So from stoichiometry, you can calculate required O2 for all components and then subtract available O2 with coal.

O2 Req = (O2 for C + O2 for H2 + O2 for S - O2 available)

then you know that air contains 23% O2, so calculate air required as

Air Req= O2 Req* 100/23

In last we need approx 1.5 % excess air for burning

So Actual Air Req For Combustion = Air Req * 1.015

Hope u get the answer

Have a nice day

EngrS

thanx alot sir......