2 replies to this topic

[subrammech]

Dear All,

please advise me the following,

what is the difference b/w vortex breaker and steel box that prevents the water overspill in the crude oil tank?

it has installed in crude oil tank,

Thanks in advance

Manian

[JoeWong]

Dear All,

please advise me the following,

what is the difference b/w vortex breaker and steel box that prevents the water overspill in the crude oil tank?

it has installed in crude oil tank,

Thanks in advance

Manian

Manian,
Your question is not clear...

Vortex breaker to avoid gas entrainment
Crude overflow in to steel box and further divert to slope tank

Steel box to prevent water overspill in crude oil tank ? Upload drawing for further evaluation.

[kkala]

what is the difference b/w vortex breaker and steel box that prevents the water overspill in the crude oil tank?
it has been installed in crude oil tank,
Manian

1. The vortex breaker is fixed at drum / tank bottom, just where the suction pipe starts. At low liquid level, you can see a swirling motion that can ingress overhead gas (e.g. air for a cone roof tank) into the suction line and then into the pump, causing damage. The vortex breaker is a static device stopping that swirling (vortex), thus eliminating air ingression. In this way pump can operate till a quite low level from bottom.
2. The term "steel box" (to prevent water spill) is not known to me. It may be just the boot leg at drum bottom to collect water. Or the sumps of cone up API 650 tanks to collect water and sediment (drained out every so often). If outside of the tank, it could be overflow receiver (as JoeWong mentions).
3. It is noted that I have not seen vortex breakers in API 650 crude tanks; suction line is not from bottom but from side. And they overflow directly into their basin(dikes).

Edited by kkala, 27 March 2010 - 01:40 AM.