oxygen level for 4 stage-SP kiln
We have installed the kiln inlet gas analyzer, here the measurements of the ID fan and kiln inlet gas analyzers
Kiln Inlet ID fan CO (%) 2 0,2
O2 (%) 0,3 3,6
NOx (ppm) 420 210
Kiln inlet temperature is 1130 C, Sintering zone is 1460 C, Secondary air is 996 C. 94 tph clinker production rate.
The kiln is firing 100% petcoke. 2250 tpd capacity. 840 kcal/kg is specific heat consumption.
If the O2 level is true for both then there should be an opened man-hole for that much of air inleakage. But i couldn't such a hole. What 's your comment on this?
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Re: oxygen level for 4 stage-SP kiln
if you see the percentage leakages across the preheater that is
3.6 - 0.3 = 18.6%
21 - 3.6
Which is slightly higher than the normally observed value of 10 - 15% i would doubt that this is really due to opened man-hole door??
the propable area you should check with "Ultra Sonic leak detector" are
1) poking holes
2) Welding joints if any
3) Cyclone door seals
4) flap dampers
i am sure if you attend this you will easily arrest your leakages
I Hope this works..