PetroDDP
Petroleum
- May 10, 2011
- 38
HellO experts !!
Propane is recovered from Unsaturated LPG at Propylene Recovery Unit (PRU) - Propylene tower (C3= splitter) bottom.
We process FCC & Coker Unsat LPG in PRU.
We are facing problem of Copper strip corrosion test failure at Propane eventhough LPG feed to PRU is Okay (Cu corrosion test is as per specification of 1B).
Recently, Propane Product is failed to Cu strip corrosion when Upstream column (DeC2- Deethaniser column) overhead cooling water exchanger was taken in to service after exchanger tube cleaning/repair in-situ.
We have the frequent experience of heavy deposits in the shell side of the Deethaniser overhead exchangers (the analysis of the deposits and deethaniser reciever boot water ionic species analysis is attached).
Is there any possibility of relationship between Cu strip corrosion test failure with the deposits at this exchanger as well as inherent sulfur species coming with LPG feed
Request to throw some lights on Chemistry aspects ?
Thanks in advance.
Propane is recovered from Unsaturated LPG at Propylene Recovery Unit (PRU) - Propylene tower (C3= splitter) bottom.
We process FCC & Coker Unsat LPG in PRU.
We are facing problem of Copper strip corrosion test failure at Propane eventhough LPG feed to PRU is Okay (Cu corrosion test is as per specification of 1B).
Recently, Propane Product is failed to Cu strip corrosion when Upstream column (DeC2- Deethaniser column) overhead cooling water exchanger was taken in to service after exchanger tube cleaning/repair in-situ.
We have the frequent experience of heavy deposits in the shell side of the Deethaniser overhead exchangers (the analysis of the deposits and deethaniser reciever boot water ionic species analysis is attached).
Is there any possibility of relationship between Cu strip corrosion test failure with the deposits at this exchanger as well as inherent sulfur species coming with LPG feed
Request to throw some lights on Chemistry aspects ?
Thanks in advance.