30" Floating suction
30" Floating suction
(OP)
I have a settling tank here in Nigeria that we have recently revamped. It originally had a 30" fixed pipe set at 40 feet for evacuating the product. We decided to go with a floating suction instead and done away with the fixed pipe. Now we seem to be getting a vapor lock in the line and the floating suction just pops right up out of the product. We installed a bypass line from the shell to the outlet nozzle for the initial fill of the tank and as long as the bypass is left open there is no issues. Unfortunately we can not leave it open as it is installed in the water table of the tank and hence can not pass lab tests once in operation.
Has anyone ever seen this before?
Floating suction is aluminum
Swivel Joint is Stay-tite
Thanks
Has anyone ever seen this before?
Floating suction is aluminum
Swivel Joint is Stay-tite
Thanks





RE: 30" Floating suction
RE: 30" Floating suction
Thanks for your response. There is presently an air vent in that spot but we feel it may not be big enough due to the amount of gasses we have in our product here. Gas breakout is a big problem here. We are starting to think that gas is building up in the elbow (while in service) were the small vent is located and that the vent hole is not big enough to accomidate the relief needed. We have been in touch with the manufacturer and they are thinking on the same lines.
Do you know of any solution that would keep us from going into the tank. Due to the cost and time it would take. To clean a tank in Nigeria takes up to 6 months to a year thats not including setting up the contract to the contractor(no joke).
Note: this problem is occuring after the tank has been in service for some time (1-5 days of service). Not during initial fill.
Thanks
RE: 30" Floating suction
RE: 30" Floating suction
RE: 30" Floating suction
Note that the old system was a fixed open ended pipe that allowed the oil to just overspill into the pipe .... hence no air build up..
I am lost... the trick is to try and fix this without going into the tank to save money. I am thinking I might not have a choice.
RE: 30" Floating suction