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[tcs.ufba]

I’m projecting a heat treater as shown below.

In my study I’m using a 30°API oil with an inlet flow rate of 3800bbl/d, 1170bbl/d water flow rate and 0.8MMscfd gas flow rate, the operating temperature is 120°F and field temperature 68°F. The fuel used in the firetube is natural gas and the Inferior calorific value is 47MJ/kg. The capacity for the firetube in our project needs to be 1,75MMBTU/hr and we would like a firetube with 24’’ diameter.

 

Data:

Vessel Size 8’x25’: Diameter 8 ft x Length 25 ft

Inferior calorific value: 1,75MMBTU/hr

Firetube diamater: 24 inches

Oil: 30°API

Field ( ambient) temperature(inlet): 68°F

Vessel Operating temperature: 120°F

Oil flow rate: 3,800bbl/d (barrels per day)

Water flow rate: 1170bbl/d             

Gas flow rate: 0.8MMscfd

Inferioc caloric value: 47MJ/kg

 

 

i)Which would be the firetube length ? How do I calculate this?

ii)About the convection section of the firetube, do you include a firetube turbulator? If yes, how do you evaluate the influence of this in the firetube length?

iii)Which would be the firetube flux (Q/A)?

iv)If I use a forced draft blower the firetube flux(Q/A) would increase ? If yes, what is the ideal air flow rate forced by the blower?

v)What would be the operation pressure inside the firetube?

[raira souza]

Very interesting this topic about everything of fire, I am also very interested in this subject.