For a FCC unit processing 50% DVGO and 50% VGO, sulfur content of 0,5-1%, where it can expect the highest corrosion rate?
Answers
|
05/04/2013
|
A:
|
keith bowers, B and B Consulting, kebowers47@gmail.com
There may be several areas experiencing high corrosion rates. Any place in the gas recovery or main column where water may exist in liquid phase WILL have high corrosion to carbon steel (there will be H2S).
Piping (and column shell and internals) may experience high temperature naphthenic acid corrosion.
Piping operating at high temperature may experience 'hydrogen blistering.' Regenerator flue gas ducting may suffer corrosion if metal skin temperatures drop too low.
The list is much longer, of course. Contact the process licensor AND your 'chemicals' supplier for their advice
|