Sorry for the late reply, just wanted to update you guys.
@LittleInch, There has to be a Feed to the Tank, a vapor product and liquid product stream, however it seems having a product stream with zero flow is possible.
Also I added a valve before the feed enters the tank, and once the dynamic...
Happy new year guys.
@LittleInch That is a great idea, the only issue is a tank requires both gas and liquid outlet streams, and I got only one gas outlet stream which is the compressed natural gas so I wasn't able to do it. If you have any idea how I can solve this please do let me know...
Hi there, I would like to learn something in dynamic hysys.
Specifically having pressure in the FEED decrease with time (For example starts at 250bar and with time goes down gradually to 20bar). Is that even possible?
The pressure reduction is to depict how a trailer carrying compressed...
@CrabbyT I appreciate this so much!
"In short, you want the loaded skid's center of gravity to be located directly below the lug, or directly between two lugs if you're using a spreader bar. By loaded skid, I'm talking about the skid itself plus the contents."
I will have 4 lugs, one lug on...
I appreciate you all so much for replying.
@RPGreen "using as a reference for a new skid with different equipment?" Yes precisely
@XR250 I have no background as a structural engineer (chemical/project junior engineer here).
@JoelTXCive I finally got the name of those "lifting lugs" thank you...
Ya for sure.
The uploaded file is the STAAD pro file and below are the three pictures.
Picture 1:
https://files.engineering.com/getfile.aspx?folder=594d6086-1b43-411a-b829-7d2d6e09f6ec&file=SKID_PIC_1..jpg
Picture 2...
Hi all,
I am trying to do a lifting analysis for a skid with some pipes, fittings, valves, heaters etc. I am trying to figure out how I can calculate the best location of the hook for the cables to be attached to avoid bending of the skid structure (picture 1) and how to calculate the size of...
Hi guys,
I am trying to get the Center of Gravity (COG) in STAAD pro for a skid support structure with the all the loads in place (pipes, valves, fittings, etc.) as the structure will be lifted and transported. I managed to get the COG for the structure only, regardless of the distribution of...
To answer your question, I think a better way of asking the previous question is:
What is a good approximate of the life of API X52 pipeline transporting sour gas given the following conditions
---
Actually using NACE-MR-0175 I think I got a good approximate of the max H2S concentration...
To clarify my position. Yes I am an intern, I am just trying to find answers (or direction into how to find answers) to those questions and present my findings (if any) to my supervisor, hence I am searching in engineering forums and look into many research papers.
@SJones thank you for pointing me to the software Freecorp 2.0 I will try to use it effectively!
@LittleInch I just checked, there wouldn't be any water in the pipe and yes, the pipe is made to "sour service"
Hmmm, most fittings, valves and tubes for sour service I find are 316 ss. Any idea...
Oh how long will it last, as in how long will it be suitable for transporting the sour gas? Are we talking 2-3 years or less? or more like 10 - 20 years or more?
2 scenarios regarding water content:
- Extremely low 0.0001% H2O to no water presence
- low 1% H2O
Is there any difference?
Thanks...
Hi all!
I wanted to know how long should I expect API 5L X52 to last transporting sour gas?
H2S (10 - 100 ppm)
Cl (not much, less than 20 ppm if any)
CO2 0.5%
N2 0.2%
pH 4 - 5
O2 (little to no O2)
T = 10C - 60C
P = max 250 bar
Just an approximate to understand how long they usually last in...
I have checked out the corrosion allowance threads, thanks. That made me go ahead and search all the sour gas threads on the forum.
Reading through, seems like all API 5L can be used for sour gas. However, when do you choose API 5L x52 over API 5L x65 for example? If you can shed some light on...
Amazing thank you so much,
Reading through online, I came across API 5L X65 pipe recommended for sour gas pipeline transportation (that is the application I am looking to use the pipe for - transportation) however I believe its a carbon steel. Is this a possible solution for me?
Thank you once again for explaining it to me;
The maximum pressure that we attain in our system is 250bar, so I will use this pressure as the maximum system pressure, and lets say we have a 100ppm H2S sour gas, what I need to do is:
Calculate pH2S = (250bar) x (100ppm H2S)
pH2S = 250bar x...
Okay maybe it is better to explain the process.
Natural gas extracted in different locations varies in hydrogen sulphide concentrations. Those natural gas suppliers say "this is our natural gas and it contains 50ppm H2S"
other suppliers say "this is our natural gas and it contains 30ppm H2S"...
Thank you so much guys for replying.
@SJones reading through the proposed H2S limit, it shows that for 316, temp 60C the partial pressure H2S max is 0.1 bar
"Calculating the mole fraction that, for the system pressure, does not give rise to an H2S partial pressure that exceeds the defined...
