Can use Concentric Reducer at Flare Line

[jafary64]

Hi my friends
Can a concentric reducer be used on a flare line, or should only an eccentric reducer be used? and why
is there any spec. or standard that explain it
Thanks a lot

 

[LittleInch]

Reducers going which way?

I.e. smaller to larger in direction of flow or the other way around?

Large to small must be eccentric (bottom flat) to allow any liquid to flow towards the flare KO drum.

It's just good design practice. Codes and Standards don't explain everything.

 

[shvet]

Eccentric reducers lead to liquid pockets. Concentric reducers (assuming flat on bottom) assure total draining.
Eccentric reducers can be implemented if those do not create liquid pockets.

 

[EngrPaper]

Eccentric reducers lead to liquid pockets. Concentric reducers (assuming flat on bottom) assure total draining.
Eccentric reducers can be implemented if those do not create liquid pockets.

Other way around there.

 

[shvet]

Other way around there.

I didn't understand anything.

 

[_1angelia23]

Eccentric reducers lead to liquid pockets. Concentric reducers (assuming flat on bottom) assure total draining.
Eccentric reducers can be implemented if those do not create liquid pockets.

Eccentric reducers lead to liquid pockets. Concentric reducers (assuming flat on bottom) assure total draining.
Eccentric reducers can be implemented if those do not create liquid pockets.

does eccentric reducers or concentric ones lead to liquid pockets? It is not clear

 

[EngrPaper]

I didn't understand anything.

does eccentric reducers or concentric ones lead to liquid pockets? It is not clear

Concentric reducers are two concentric circles for inlet and outlet, they do not have a flat side. So when using concentric reducers, there is always a liquid pocket when flowing from large to small side. Eccentric reducers have an offset from inlet to outlet so that there is a flat side. If you want something to be free draining (flow going from large to small), then you install the eccentric reducer with the flat side on the bottom.

If you are flowing from small to large, it doesn't matter because its all either flat or downhill.

LittleInch's post above is correct.

 

[shvet]

Concentric reducers lead to liquid pockets. Eccentric reducers (assuming flat on bottom) assure total draining.
Concentric reducers can be implemented if those do not create liquid pockets.

Corrected the typo. Thank you for paying my attention.