6 replies to this topic

[Beergson]

Dear All,
I have to calculate flue gas quantity which will be produced during combustion of fuel oil. I have fuel oil LHV, its specification (content of sulphur, nickel, nitrogen, hydrogen,asphaltens, sodium, etc) I know what is air excess air.
Can anybody help me?

[ankur2061]

Dear All,
I have to calculate flue gas quantity which will be produced during combustion of fuel oil. I have fuel oil LHV, its specification (content of sulphur, nickel, nitrogen, hydrogen,asphaltens, sodium, etc) I know what is air excess air.
Can anybody help me?

Beergson,

Have a look at the combustion calculation spreadsheet I had posted a long time ago. This should get you started.

Regards,
Ankur

[ELEMAN]

Hello everybody:

Beergson, the mass of the air and fuel at the inlet of the engine is the same at the outlet, just hotter. That mass is increased by a very little amount of combustion products. The amount of air that goes through the engine in will be equal to the engine displacement x RPM ÷ 2 (assuming this is a four- stroke engine and the combustion is complete).

[kkala]

I have to calculate flue gas quantity which will be produced during combustion of fuel oil. I have fuel oil LHV, its specification (content of sulphur, nickel, nitrogen, hydrogen,asphaltens, sodium, etc) I know what is air excess air.
Can anybody help me?

Since you seem to have elementary analysis of fuel oil available, as well as excess air, you can calculate flue gas quantity & composition by stoichiometry. You can neglect CO formation (too little) and consider all C burned to CO2. Combustion calculation spreadsheet by Ankur2061 will be certainly useful.
By the way, I would be indebted if somebody could tell me how to locate it in the forum. Whenever I used its search machine for a subject, I failed in finding it.
In case that elementary analysis of fuel oil is not complete, estimates can be made, (see Perry (7th ed), 27-8/11, Liquid fuels), but these concern mainly H content. Perry also presents typical analysis of fuel oils to have an idea. Oxygen content is often not specified, and is not easy to guess.
When content of all other elements (H, S, N, O, ash, etc) has been specified, C content is found by difference.

[ankur2061]

Kkala,

Here is the link for the combustion calculation spreadsheet:

http://www.cheresour...__1

Hope this helps.

Regards,
Ankur.

[Beergson]

Dear All,
I have to calculate flue gas quantity which will be produced during combustion of fuel oil. I have fuel oil LHV, its specification (content of sulphur, nickel, nitrogen, hydrogen,asphaltens, sodium, etc) I know what is air excess air.
Can anybody help me?

Beergson,

Have a look at the combustion calculation spreadsheet I had posted a long time ago. This should get you started.

Regards,
Ankur

Thank You very much for this spreadsheet
Can You tell me what standard/book solid & liquid fuel calculation has been based at?
THX

[ankur2061]

Dear All,
I have to calculate flue gas quantity which will be produced during combustion of fuel oil. I have fuel oil LHV, its specification (content of sulphur, nickel, nitrogen, hydrogen,asphaltens, sodium, etc) I know what is air excess air.
Can anybody help me?

Beergson,

Have a look at the combustion calculation spreadsheet I had posted a long time ago. This should get you started.

Regards,
Ankur

Thank You very much for this spreadsheet
Can You tell me what standard/book solid & liquid fuel calculation has been based at?
THX

Beergson,

I have not used any standard textbook to generate the spreadsheet. It is just elementary 'Stoichiometry' which you learn from any standard chemistry book & hence I can't give any particular reference. Simply put, I don't need a textbook to do a chemical balance for Carbon, Sulfur & Hydrogen reacting with oxygen. The HHV & LHV are sourced from GPSA databook & that is clearly mentioned in the spreadsheet.

Regards,
Ankur.

Edited by ankur2061, 28 January 2010 - 01:59 PM.