Speak to the folks at Norton or Koch in the USA who manufacture all sorts of packing for absorber / stripper columns. I dont seem to see Norton USA on Google - its all contaminated with links to China companies.
If this corrosion is internal, then you will have the same problems with above ground lines as with the old underground lines. Got salty water in these fuel grades at the source tanks ?
The quoted "min Cv" in that table of 11 for the 12inch valve implies a rangeability which far exceeds the typical value of 30, since 1875/11 = 170. Hence I would interpret the min Cv of 11 as being that for mechanical integrity and not for controllability - see footnote to those tables.
Hence...
Sizing control valves for the min flow case is an integral part of control valve selection, and often overlooked by process and instrumentation engineers. The end result is not good if ignored - poor controllability at low flow resulting in frequent shutdowns / unsafe operating conditions /...
The turndown case will also have to be accommodated, which I guess is : P1 = 82barg,P2=36bar, Q=10e3sm3/hr. The resulting Cv must be higher than the min permissible Cv as recommended by the control valve vendor. From this table, say for 12inch valve, the min Cv for the case of equal %, multipath...
This is where I got the solubility curve for N2 from
https://www.thermopedia.com/content/1138/
I havent been able to get a cross reference check ( so far) to this graph elsewhere at these high pressures. H shows a pressure dependence at high pressures.
And the z value was calculated from the...
Accounting for N2 solubility in water at 655 barg, Google tells me H = 6e-5 / MPa, where solubility of N2, the Henry's Law constant, is expressed as mole fraction of N2 / kgmole of water. Simplifying, this works out to 6.2kg of N2 dissolved / m3 of water. Add the corresponding mass dissolved in...
Compressibility factor z is roughly 1.61 for N2 at this high pressure from T-S diagram of N2 in Perry Chapter 3
Find n
n=P.V/z.R.T
n= kgmoles of N2 gas
V= actual volume of gas space in m3
P=pressure = 656e2 kpa abs
R=8.314kJ/kgmole/degK
T= 300degK
Actual mass of N2 required, kg = n x 28...
You're off to a good start, this gas is probably not at or below water or hydrocarbon dewpoint.
Pistons with labyrinth type piston rings last much longer than those with conventional piston rings, but such machines carry a CAPEX premium, but these payoff very well in the long run with increased...
I set up flow control loops on hot high viscosity bitumen lines running 180-220degC with ultrasonic clamp on FT some 10years ago - cant remember the brand name , but it was some German company - worked as intended. They offered onsite troubleshooting assistance, which was re assuring.
Reverse siphon flow will not be possible as long as the discharge point is above the level at the inlet. Besides, you still got the check valve on pump discharge.
In my experience, gravity flow lines in down flow should have this air valve at the top of the high point - this is to let air INTO...
Can you describe this discharge ?
"The pipe will be discharging into the gravity network."
If this discharge is into a liquid flooded pipe or tank, then I see the justification for this air valve.
Pls ask a process engineer familiar with hydraulics in this flare network - there are many variables that will affect choice of location where this tie in should be made. You wont find this guidance in B31.3.
By the way, how many levels of flare do you have in your plant - LLP, LP, HP etc?
Maybe a side tap off the suction header to the lateral leading to pump A, instead of a bottom tap?
With pump sets in HT fluid service, where autostart of the standby pump is enabled, there is usually a warming line in operation on the discharge side of each pump that bypasses the discharge...
Since you plan to move from oil seals to dry gas seals on K303, and given the low mol weight gas service requirement, it is most likely new compressors will be required to operate with the existing GTs' for these machines.
Compressor rotor fouling may require changeout of demisting devices on...
See the footnotes on that F factor table in API 521- will your foam glass insulation remain intact with high velocity fire hose jet stream ?
If not, go for this insulation which is typically used in the oil/ gas business to enable taking full credit for its insulation during a pool fire ...
