3 replies to this topic

[CHEMSTRONG]

Hi All,

 

I have 5 fired heater with all radiant sections in one firebox and a common convection section for all five fired heaters. They have mentioned it is as Arbour type of fired heater .

 

Can you let me know what is that ? What is so special about this type of fired heater ?

 

Regards,

chetan Chavan

[PingPong]

The name Arbor refers to the shape of the radiant coils: many parallel inverted U-tubes

 

 

This concept is used for large gas or vapor flowrates where low pressure drop is required.

Therefor they are used in for example catalytic reformer heaters.

 

A common convection bank for multiple heaters can be used when flue gas temperatures from radiant cells are not too far apart, no matter what type of radiant coils are used.

[CHEMSTRONG]

But in case of CCR heaters, why this arrangement is preferred ? nstead of having seprate radiant sections , they went for common radiant firebox and common convection box

[PingPong]

Without a sketch I am not sure what you mean by common radiant firebox.

A firebox with separation walls between the different sets of radiant coils and associated burners?

 

Such arrangement leads to a lower investment cost than five separate heaters.