Hi,
I am working on evaluation of existing slug catcher and blow case vessel, for this i need to do some hydraulics for finding out the flows through existing piping as well.There are basically four lines, two liquid lines and two gas lines,i have done calculations for liquid lines but for the gas line i am facing difficulties.
1- Equalization line
This line is connected from blow case to slug catcher(operating at 400 psig) and is required to depressurize blow case vessel from 1150 to 400 psig approx. with in the time delay period of 10 sec. the blow case gas volume is 3.24 m3. The line size is 1" ( Schedule -160), length is 5577mm and its elevation difference is 2390 mm.
2- Pressurization line
This line is connected to blow case from process gas (operating at 1150 psig) and is required to pressurize the blow case vessel from 400 to 1150 psig approx. with in the time delay period of 10 sec. the blow case gas volume is 0.124 m3 (pressurizing else is filled with liquid) The line size is 1" ( Schedule -160), length is 5262 mm and its elevation difference is 1278 mm.
The gas molar composition is as below
90% methane
4.5% Ethane
1.5 % Propane
i am looking for guidance to evaluate these lines and to size these lines for my self
Regards