I'm obtaining recommendations from at least 3 coating manufacturers and applicators: Belzona, Thortex, Carboline and still going. An internal coating would be our best bet provided it sticks and we don't lose too much heat transfer from the reactor jacket.
Thanks for all your help guys.
If failure occurs in a matter of weeks - that's gonna' be a problem.
I read where treating the stainless to minimize tensite stresses can help minimize SCC. Do you think we could shot peen the welds and connections on the inside of the vessel to reduce the residual stresses?
The reactor is 4000 gallons so about 8 feet in diameter and 9 feet on the straight side. I spoke with someone at TesTex and they suggested some sort of electronic scan of the interior surface for pitting and cracks every 6 months to see how it trends.
If a failure did occur because of SCC...
Thanks for the information. At this point replacing the vessel is not an option.
Are there any NDT's that can be used to check the vessel for SCC periodically?
We are considering running a process which generates sodium chloride in an organic reaction. To remove the salt, water is added to dissolve the salt and the salt water is decanted off - this salt water will be about 20-25% sodium chloride by mass at 70C.
There is a concern about corrosion with...
sailoday28,
Ok, now we're getting somewhere. I'll scrutinize the system better tomorrow. Perhaps one thing I failed to mention was that there are spray nozzles on the discharge piping which will be giving me some back pressure. There must be more head losses than I have assumed.
Thanks and...
Anyone have any good sources on operating efficiency calculations for spray towers being used to scrub hydrogen sulfide gas using a sodium hydroxide solution?
Sailoday28,
Ok, let me get this straight:
My discharge pressure reading is 50 psig or 115 feet head.
My discharge elevation is 40 feet
My suction head is 14 feet
My friction losses are 9 feet
My velocity losses are negligible
TDH = (115 + 40 + 0) - (0 + 14 + 0) + 9 = 150 feet
Which, according to...
katmar,
Thanks for the info. I'm thinking now that the pump discharge pressure is not going to be an adequate means of monitoring flow rate because of where I am on the pump curve. The pump curve shows capacities of 250 gpm at 100 feet of total head and 25 gpm at 110 feet of total head...
I have a pump recirculating liquid around a scrubber. I want to know the flow rate at the current conditions (pump discharge pressure of 50 psig)
I know my head losses due to friction (10 feet) and elevation (40 feet) and I know the height of liquid above the suction side of the pump (14...
