Dear expert,
Plz tell me what will effect on preheater exit temp. when my calciner coal % ash increase one %. in 100% pet coke firing and% 50%pet coke+50% important coal.
Keep same clinker production .
What is dust load factor in ILC and SLC. in preheater.
With regards
Tech.forum
I Wish there could have eixsts such a relation !! We should be greatful to Y.ueda and others of Onada Cements (Now TAIHEIYO Cement) who have extensivley studied the combustion behaviour of coal in RSP Swirl calciner and published a series of Articles in ZKG and elsewhere. one such study was " The Effect of Coal Calorofic Value on Cement Quality" Published in ZKG 4/1983 PP 77 - 83
Following is the excerpt of out comings of the study
Ash % Top Cyclone Gas Temp
18.9 334
32.8 338
38.1 342
44.0 348
From above result it is clear that for every 1% change in coal Ash the Cyclone 1 gas temperature is changed by 1.8 oC
However a word of caution is to be inserted here.
1) The aim of the study was not to See the effect of Ash on C1 Gas temperature
2) This study pertains to NSP (M-RSP)
3) Done for Specific Rawmix................ and so on
For details refer to above quoted article,to fully understand the behavior of the pyro system it is recommended that a systematic detailed study be taken for your kiln, considering all efecting paramters like Ash % VM% Fineness, Fixed carbon % , LSF etc..,Nevertheless increasing Ash content will increase PH exit gas temperature due to increased combustion gases...
Hope this meets your requirement
I concur with the last statement of Mr. Hussaini comment. This is not the ash content that has relevant effect on the preheater exit temperature, it is the amount of combustion gases relative to the lower heat value of the coal. In order to calculate this, you should have a complete elemental analysis (CHONS analysis) of your coal + a measure of the lower heat value.
Best regards,
Hello gks "WE" shall be greatful to you if can share the results of "effect on preheater exit temp. when my calciner coal % ash increase one
%. in 100% pet coke firing and% 50%pet coke+50% important coal" in your plant ex Kiln log sheets, coal mill log sheets or fuel analysis etc.,
As this would help cement fraternity
Regards
Raza hussaini