rajuram sharma
8 posts
TimePosted 17/09/2014 12:36:51

Regarding specific heat consumption (Kcal/Kg of Clinker) of kiln if we use 100% Pet Coke with 1% residue on 90 micron in place of coal

Dear Experts,

What will be the effect of Pet Coke on specific heat consumption (Kcal/Kg of Clinker) of kiln if we use 100% Pet Coke with 1% residue on 90 micron in place of coal.Specific heat of kiln system will increase or decrease when we use Petcoke as a fuel.

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Ted Krapkat
536 posts
TimePosted 18/09/2014 03:32:54

re Regarding specific heat consumption (Kcal/Kg of Clinker) of kiln if we use 100% Pet Coke with 1% residue on 90 micron in place of coal

Hello Rajuram,

Generally speaking, the use of petcoke results in a higher specific heat consumption than coal.

This is primarily due to the higher O2 levels required in the kiln inlet to prevent build-ups and blockages resulting from the very high sulphur content of petcoke (usually up to 7% as S). Higher O2 levels require more secondary air to be heated, increasing heat consumption. Higher secondary air flow also causes an increase in electrical energy consumption (kWh/t) due to higher power requirement of the ID fan. There may also be a reduction in kiln production rate if your ID fan capacity is limited, which would also result in an increase in heat consumption.

Also the very low ash of petcoke means that less clinker is produced per tonne of kiln feed. This also increases the specific heat consumption.

 

Regards,

Ted.

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rajuram sharma
8 posts
TimePosted 18/09/2014 05:37:56

re Regarding specific heat consumption (Kcal/Kg of Clinker) of kiln if we use 100% Pet Coke with 1% residue on 90 micron in place of coal

Dear Sir,

Thanks a lot for your valuable explanation.

With Best Regards,

Rajuram Sharma

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KaM13
3 posts
TimePosted 25/09/2014 18:01:28
KaM13 says

re Regarding specific heat consumption (Kcal/Kg of Clinker) of kiln if we use 100% Pet Coke with 1% residue on 90 micron in place of coal

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