Propane/Butane storage & export
Propane/Butane storage & export
(OP)
During propane and butane storage and export facility design, I met some dimed points because of my lack of experience.
Please advise me about following questions;
In this plant we have two Propane storage tanks and two Butane storage tank.
Also 2.5 km away from the tank farm, there are two loading arms one for propane and the other for butane.
The loading operations will happen every 20 days.
1. To cooldown the loading lines, circulation with the product should be circulated continously? or circulated just few hours before a ship's arrival?
2. To condense the boil off gas in Butane storage tank, we plan to operate small capacity circulation pump and cooler. During loading the Butane product, what is better way between below two operation scheme?
- one is runing large capacity loading pump and circulation pump simulteneously
- the other one is increse loading pumps capacity and recycle the increased flow two cooler.
your kind advise will be highly appreciated.
Please advise me about following questions;
In this plant we have two Propane storage tanks and two Butane storage tank.
Also 2.5 km away from the tank farm, there are two loading arms one for propane and the other for butane.
The loading operations will happen every 20 days.
1. To cooldown the loading lines, circulation with the product should be circulated continously? or circulated just few hours before a ship's arrival?
2. To condense the boil off gas in Butane storage tank, we plan to operate small capacity circulation pump and cooler. During loading the Butane product, what is better way between below two operation scheme?
- one is runing large capacity loading pump and circulation pump simulteneously
- the other one is increse loading pumps capacity and recycle the increased flow two cooler.
your kind advise will be highly appreciated.





RE: Propane/Butane storage & export
2. Since you will have a circulation system in place why would you go through the trouble of switching it off during a loading operation? I would just keep it running and design the loading pumps to suit their duty.
Regards
RE: Propane/Butane storage & export
But still I worry about this;
1. If pipe line cooldown performed intermittently, is there no thermal fatigue on pipe(LTCS) expected?
2. Currently circulation and loading header is common. If we operate loading and circulation pump by parallel, small capacity circulation pump may operated bellow it's rated capacity.
regards,
RE: Propane/Butane storage & export
2. I guess I didn't (and maybe still don't
regards
RE: Propane/Butane storage & export