Copper Strip corrosion in Propane Product in C3 splitter column bottom
Copper Strip corrosion in Propane Product in C3 splitter column bottom
(OP)
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 ?
http:// files.engi neering.co m/getfile. aspx?folde r=9a424e2f -f60e-4da9 -88fc-e11a 0e8f4934&a mp;file=PR U-1_DeethE XCH-Overhe ad_cooler_ Shell_side _depositan alysis.xls
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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 ?
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Thanks in advance.
RE: Copper Strip corrosion in Propane Product in C3 splitter column bottom
RE: Copper Strip corrosion in Propane Product in C3 splitter column bottom
Cooling water tube side pressure is 4 kg cm2g and shell side is 21 kg cm2g. So, i think it may not be chance.
RE: Copper Strip corrosion in Propane Product in C3 splitter column bottom
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RE: Copper Strip corrosion in Propane Product in C3 splitter column bottom
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With Warm Regards,
RE: Copper Strip corrosion in Propane Product in C3 splitter column bottom
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RE: Copper Strip corrosion in Propane Product in C3 splitter column bottom